diff options
Diffstat (limited to 'lib/libc/stdio')
138 files changed, 22223 insertions, 0 deletions
diff --git a/lib/libc/stdio/Makefile.inc b/lib/libc/stdio/Makefile.inc new file mode 100644 index 0000000..d815c97 --- /dev/null +++ b/lib/libc/stdio/Makefile.inc @@ -0,0 +1,72 @@ +# @(#)Makefile.inc 8.3 (Berkeley) 4/17/94 +# $FreeBSD$ + +# stdio sources +.PATH: ${.CURDIR}/stdio + +SRCS+= _flock_stub.c asprintf.c clrerr.c fclose.c fcloseall.c fdopen.c \ + feof.c ferror.c fflush.c fgetc.c fgetln.c fgetpos.c fgets.c fgetwc.c \ + fgetwln.c fgetws.c \ + fileno.c findfp.c flags.c fopen.c fprintf.c fpurge.c fputc.c fputs.c \ + fputwc.c fputws.c fread.c freopen.c fscanf.c fseek.c fsetpos.c \ + ftell.c funopen.c fvwrite.c fwalk.c fwide.c fwprintf.c fwscanf.c \ + fwrite.c getc.c \ + getchar.c gets.c getw.c getwc.c getwchar.c makebuf.c mktemp.c \ + perror.c printf.c putc.c putchar.c puts.c putw.c putwc.c putwchar.c \ + refill.c remove.c rewind.c rget.c scanf.c setbuf.c setbuffer.c \ + setvbuf.c snprintf.c sprintf.c sscanf.c stdio.c swprintf.c swscanf.c \ + tempnam.c tmpfile.c \ + tmpnam.c ungetc.c ungetwc.c unlocked.c vasprintf.c vfprintf.c \ + vfscanf.c \ + vfwprintf.c vfwscanf.c vprintf.c vscanf.c vsnprintf.c vsprintf.c \ + vsscanf.c \ + vswprintf.c vswscanf.c vwprintf.c vwscanf.c wbuf.c wprintf.c wscanf.c \ + wsetup.c + +SRCS+= xprintf.c xprintf_float.c xprintf_int.c xprintf_str.c +SRCS+= xprintf_errno.c xprintf_hexdump.c xprintf_quote.c +SRCS+= xprintf_time.c xprintf_vis.c + +SYM_MAPS+= ${.CURDIR}/stdio/Symbol.map + +MAN+= fclose.3 ferror.3 fflush.3 fgetln.3 fgets.3 fgetwln.3 fgetws.3 \ + flockfile.3 \ + fopen.3 fputs.3 \ + fputws.3 fread.3 fseek.3 funopen.3 fwide.3 getc.3 getwc.3 mktemp.3 \ + printf.3 putc.3 putwc.3 remove.3 scanf.3 setbuf.3 stdio.3 tmpnam.3 \ + ungetc.3 ungetwc.3 wprintf.3 wscanf.3 + +MLINKS+=fclose.3 fcloseall.3 +MLINKS+=ferror.3 ferror_unlocked.3 \ + ferror.3 clearerr.3 ferror.3 clearerr_unlocked.3 \ + ferror.3 feof.3 ferror.3 feof_unlocked.3 \ + ferror.3 fileno.3 ferror.3 fileno_unlocked.3 +MLINKS+=fflush.3 fpurge.3 +MLINKS+=fgets.3 gets.3 +MLINKS+=flockfile.3 ftrylockfile.3 flockfile.3 funlockfile.3 +MLINKS+=fopen.3 fdopen.3 fopen.3 freopen.3 +MLINKS+=fputs.3 puts.3 +MLINKS+=fread.3 fwrite.3 +MLINKS+=fseek.3 fgetpos.3 fseek.3 fseeko.3 fseek.3 fsetpos.3 fseek.3 ftell.3 \ + fseek.3 ftello.3 fseek.3 rewind.3 +MLINKS+=funopen.3 fropen.3 funopen.3 fwopen.3 +MLINKS+=getc.3 fgetc.3 getc.3 getc_unlocked.3 getc.3 getchar.3 \ + getc.3 getchar_unlocked.3 getc.3 getw.3 +MLINKS+=getwc.3 fgetwc.3 getwc.3 getwchar.3 +MLINKS+=mktemp.3 mkdtemp.3 mktemp.3 mkstemp.3 mktemp.3 mkstemps.3 +MLINKS+=printf.3 asprintf.3 printf.3 fprintf.3 \ + printf.3 snprintf.3 printf.3 sprintf.3 \ + printf.3 vasprintf.3 \ + printf.3 vfprintf.3 printf.3 vprintf.3 printf.3 vsnprintf.3 \ + printf.3 vsprintf.3 +MLINKS+=putc.3 fputc.3 putc.3 putc_unlocked.3 putc.3 putchar.3 \ + putc.3 putchar_unlocked.3 putc.3 putw.3 +MLINKS+=putwc.3 fputwc.3 putwc.3 putwchar.3 +MLINKS+=scanf.3 fscanf.3 scanf.3 sscanf.3 scanf.3 vfscanf.3 scanf.3 vscanf.3 \ + scanf.3 vsscanf.3 +MLINKS+=setbuf.3 setbuffer.3 setbuf.3 setlinebuf.3 setbuf.3 setvbuf.3 +MLINKS+=tmpnam.3 tempnam.3 tmpnam.3 tmpfile.3 +MLINKS+=wprintf.3 fwprintf.3 wprintf.3 swprintf.3 \ + wprintf.3 vwprintf.3 wprintf.3 vfwprintf.3 wprintf.3 vswprintf.3 +MLINKS+=wscanf.3 fwscanf.3 wscanf.3 swscanf.3 wscanf.3 vwscanf.3 \ + wscanf.3 vswscanf.3 wscanf.3 vfwscanf.3 diff --git a/lib/libc/stdio/Symbol.map b/lib/libc/stdio/Symbol.map new file mode 100644 index 0000000..1296258 --- /dev/null +++ b/lib/libc/stdio/Symbol.map @@ -0,0 +1,145 @@ +# $FreeBSD$ + +FBSD_1.0 { + flockfile; + ftrylockfile; + funlockfile; + asprintf; + clearerr; + fclose; + fcloseall; + fdopen; + feof; + ferror; + fflush; + fgetc; + fgetln; + fgetpos; + fgets; + fgetwc; + fgetwln; + fgetws; + fileno; + __sF; + __stdinp; + __stdoutp; + __stderrp; + f_prealloc; # deprecated??? + fopen; + fprintf; + fpurge; + fputc; + fputs; + fputwc; + fputws; + fread; + freopen; + fscanf; + fseek; + fseeko; + fsetpos; + ftell; + ftello; + funopen; + fwide; + fwprintf; + fwrite; + fwscanf; + getc; + getchar; + gets; + getw; + getwc; + getwchar; + mkstemps; + mkstemp; + mkdtemp; + mktemp; + perror; + printf; + putc; + putchar; + puts; + putw; + putwc; + putwchar; + remove; + rewind; + __srget; + scanf; + setbuf; + setbuffer; + setlinebuf; + setvbuf; + snprintf; + sprintf; + sscanf; + swprintf; + swscanf; + tempnam; + tmpfile; + tmpnam; + ungetc; + ungetwc; + getchar_unlocked; + getc_unlocked; + putchar_unlocked; + putc_unlocked; + feof_unlocked; + ferror_unlocked; + clearerr_unlocked; + fileno_unlocked; + vasprintf; + vfprintf; + vfscanf; + vfwprintf; + vfwscanf; + vprintf; + vscanf; + vsnprintf; + vsprintf; + vsscanf; + vswprintf; + vswscanf; + vwprintf; + vwscanf; + __swbuf; + wprintf; + wscanf; + __use_xprintf; + __lowercase_hex; + __uppercase_hex; + __printf_flush; + __printf_puts; + __printf_pad; + __printf_out; + __xvprintf; + register_printf_function; + register_printf_render; + register_printf_render_std; + __printf_arginfo_float; + __printf_render_float; + __printf_arginfo_hexdump; + __printf_render_hexdump; + __printf_arginfo_int; + __printf_render_int; + __printf_arginfo_ptr; + __printf_render_ptr; + __printf_arginfo_str; + __printf_render_str; + __printf_arginfo_chr; + __printf_render_chr; + __printf_arginfo_time; + __printf_render_time; + __printf_arginfo_vis; + __printf_render_vis; +}; + +FBSDprivate { + _flockfile; + _flockfile_debug_stub; + _flockfile_debug; + _ftrylockfile; + _funlockfile; + __vfscanf; +}; diff --git a/lib/libc/stdio/_flock_stub.c b/lib/libc/stdio/_flock_stub.c new file mode 100644 index 0000000..8abc8e3 --- /dev/null +++ b/lib/libc/stdio/_flock_stub.c @@ -0,0 +1,149 @@ +/* + * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * POSIX stdio FILE locking functions. These assume that the locking + * is only required at FILE structure level, not at file descriptor + * level too. + * + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <pthread.h> +#include "un-namespace.h" + +#include "local.h" + + +/* + * Weak symbols for externally visible functions in this file: + */ +__weak_reference(_flockfile, flockfile); +__weak_reference(_flockfile_debug_stub, _flockfile_debug); +__weak_reference(_ftrylockfile, ftrylockfile); +__weak_reference(_funlockfile, funlockfile); + +/* + * We need to retain binary compatibility for a while. So pretend + * that _lock is part of FILE * even though it is dereferenced off + * _extra now. When we stop encoding the size of FILE into binaries + * this can be changed in stdio.h. This will reduce the amount of + * code that has to change in the future (just remove this comment + * and #define). + */ +#define _lock _extra + +void +_flockfile(FILE *fp) +{ + pthread_t curthread = _pthread_self(); + + if (fp->_lock->fl_owner == curthread) + fp->_lock->fl_count++; + else { + /* + * Make sure this mutex is treated as a private + * internal mutex: + */ + _pthread_mutex_lock(&fp->_lock->fl_mutex); + fp->_lock->fl_owner = curthread; + fp->_lock->fl_count = 1; + } +} + +/* + * This can be overriden by the threads library if it is linked in. + */ +void +_flockfile_debug_stub(FILE *fp, char *fname, int lineno) +{ + _flockfile(fp); +} + +int +_ftrylockfile(FILE *fp) +{ + pthread_t curthread = _pthread_self(); + int ret = 0; + + if (fp->_lock->fl_owner == curthread) + fp->_lock->fl_count++; + /* + * Make sure this mutex is treated as a private + * internal mutex: + */ + else if (_pthread_mutex_trylock(&fp->_lock->fl_mutex) == 0) { + fp->_lock->fl_owner = curthread; + fp->_lock->fl_count = 1; + } + else + ret = -1; + return (ret); +} + +void +_funlockfile(FILE *fp) +{ + pthread_t curthread = _pthread_self(); + + /* + * Check if this file is owned by the current thread: + */ + if (fp->_lock->fl_owner == curthread) { + /* + * Check if this thread has locked the FILE + * more than once: + */ + if (fp->_lock->fl_count > 1) + /* + * Decrement the count of the number of + * times the running thread has locked this + * file: + */ + fp->_lock->fl_count--; + else { + /* + * The running thread will release the + * lock now: + */ + fp->_lock->fl_count = 0; + fp->_lock->fl_owner = NULL; + _pthread_mutex_unlock(&fp->_lock->fl_mutex); + } + } +} diff --git a/lib/libc/stdio/asprintf.c b/lib/libc/stdio/asprintf.c new file mode 100644 index 0000000..f142651 --- /dev/null +++ b/lib/libc/stdio/asprintf.c @@ -0,0 +1,71 @@ +/* $OpenBSD: asprintf.c,v 1.8 2002/02/19 19:39:36 millert Exp $ */ + +/* + * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <stdarg.h> + +#include "local.h" + +int +asprintf(char **str, char const *fmt, ...) +{ + int ret; + va_list ap; + FILE f; + struct __sFILEX ext; + + f._file = -1; + f._flags = __SWR | __SSTR | __SALC; + f._bf._base = f._p = (unsigned char *)malloc(128); + if (f._bf._base == NULL) { + *str = NULL; + errno = ENOMEM; + return (-1); + } + f._bf._size = f._w = 127; /* Leave room for the NUL */ + f._extra = &ext; + INITEXTRA(&f); + va_start(ap, fmt); + ret = __vfprintf(&f, fmt, ap); /* Use unlocked __vfprintf */ + va_end(ap); + if (ret < 0) { + free(f._bf._base); + *str = NULL; + errno = ENOMEM; + return (-1); + } + *f._p = '\0'; + *str = (char *)f._bf._base; + return (ret); +} diff --git a/lib/libc/stdio/clrerr.c b/lib/libc/stdio/clrerr.c new file mode 100644 index 0000000..13538d5 --- /dev/null +++ b/lib/libc/stdio/clrerr.c @@ -0,0 +1,56 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)clrerr.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#undef clearerr + +void +clearerr(fp) + FILE *fp; +{ + FLOCKFILE(fp); + __sclearerr(fp); + FUNLOCKFILE(fp); +} diff --git a/lib/libc/stdio/fclose.3 b/lib/libc/stdio/fclose.3 new file mode 100644 index 0000000..320de29 --- /dev/null +++ b/lib/libc/stdio/fclose.3 @@ -0,0 +1,115 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fclose.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt FCLOSE 3 +.Os +.Sh NAME +.Nm fclose , +.Nm fcloseall +.Nd close a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fclose "FILE *stream" +.Ft void +.Fn fcloseall void +.Sh DESCRIPTION +The +.Fn fclose +function +dissociates the named +.Fa stream +from its underlying file or set of functions. +If the stream was being used for output, any buffered data is written +first, using +.Xr fflush 3 . +.Pp +The +.Fn fcloseall +function calls +.Fn fclose +on all open streams. +.Sh RETURN VALUES +Upon successful completion 0 is returned. +Otherwise, +.Dv EOF +is returned and the global variable +.Va errno +is set to indicate the error. +In either case no further access to the stream is possible. +.Sh ERRORS +The +.Fn fclose +function +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr close 2 +or +.Xr fflush 3 . +.Sh NOTES +The +.Fn fclose +function +does not handle NULL arguments; they will result in a segmentation +violation. +This is intentional - it makes it easier to make sure programs written +under +.Fx +are bug free. +This behaviour is an implementation detail, and programs should not +rely upon it. +.Sh SEE ALSO +.Xr close 2 , +.Xr fflush 3 , +.Xr fopen 3 , +.Xr setbuf 3 +.Sh STANDARDS +The +.Fn fclose +function +conforms to +.St -isoC . +.Pp +The +.Fn fcloseall +function first appeared in +.Fx 7.0 . diff --git a/lib/libc/stdio/fclose.c b/lib/libc/stdio/fclose.c new file mode 100644 index 0000000..3524f60 --- /dev/null +++ b/lib/libc/stdio/fclose.c @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fclose.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +fclose(FILE *fp) +{ + int r; + + if (fp->_flags == 0) { /* not open! */ + errno = EBADF; + return (EOF); + } + FLOCKFILE(fp); + r = fp->_flags & __SWR ? __sflush(fp) : 0; + if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0) + r = EOF; + if (fp->_flags & __SMBF) + free((char *)fp->_bf._base); + if (HASUB(fp)) + FREEUB(fp); + if (HASLB(fp)) + FREELB(fp); + fp->_file = -1; + fp->_r = fp->_w = 0; /* Mess up if reaccessed. */ + fp->_flags = 0; /* Release this FILE for reuse. */ + FUNLOCKFILE(fp); + return (r); +} diff --git a/lib/libc/stdio/fcloseall.c b/lib/libc/stdio/fcloseall.c new file mode 100644 index 0000000..8ee9a62 --- /dev/null +++ b/lib/libc/stdio/fcloseall.c @@ -0,0 +1,39 @@ +/*- + * Copyright (C) 2006 Daniel M. Eischen. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include "local.h" + +__weak_reference(__fcloseall, fcloseall); + +void +__fcloseall(void) +{ + + (void)_fwalk(fclose); +} diff --git a/lib/libc/stdio/fdopen.c b/lib/libc/stdio/fdopen.c new file mode 100644 index 0000000..961c0d9 --- /dev/null +++ b/lib/libc/stdio/fdopen.c @@ -0,0 +1,93 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fdopen.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdio.h> +#include <errno.h> +#include "un-namespace.h" +#include "local.h" + +FILE * +fdopen(fd, mode) + int fd; + const char *mode; +{ + FILE *fp; + static int nofile; + int flags, oflags, fdflags, tmp; + + if (nofile == 0) + nofile = getdtablesize(); + + if ((flags = __sflags(mode, &oflags)) == 0) + return (NULL); + + /* Make sure the mode the user wants is a subset of the actual mode. */ + if ((fdflags = _fcntl(fd, F_GETFL, 0)) < 0) + return (NULL); + tmp = fdflags & O_ACCMODE; + if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) { + errno = EINVAL; + return (NULL); + } + + if ((fp = __sfp()) == NULL) + return (NULL); + fp->_flags = flags; + /* + * If opened for appending, but underlying descriptor does not have + * O_APPEND bit set, assert __SAPP so that __swrite() caller + * will _sseek() to the end before write. + */ + if ((oflags & O_APPEND) && !(fdflags & O_APPEND)) + fp->_flags |= __SAPP; + fp->_file = fd; + fp->_cookie = fp; + fp->_read = __sread; + fp->_write = __swrite; + fp->_seek = __sseek; + fp->_close = __sclose; + return (fp); +} diff --git a/lib/libc/stdio/feof.c b/lib/libc/stdio/feof.c new file mode 100644 index 0000000..0bb12be --- /dev/null +++ b/lib/libc/stdio/feof.c @@ -0,0 +1,59 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)feof.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" + +#undef feof + +int +feof(FILE *fp) +{ + int ret; + + FLOCKFILE(fp); + ret= __sfeof(fp); + FUNLOCKFILE(fp); + return (ret); +} diff --git a/lib/libc/stdio/ferror.3 b/lib/libc/stdio/ferror.3 new file mode 100644 index 0000000..3fe2839 --- /dev/null +++ b/lib/libc/stdio/ferror.3 @@ -0,0 +1,136 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ferror.3 8.2 (Berkeley) 4/19/94 +.\" $FreeBSD$ +.\" +.Dd January 10, 2003 +.Dt FERROR 3 +.Os +.Sh NAME +.Nm clearerr , +.Nm clearerr_unlocked , +.Nm feof , +.Nm feof_unlocked , +.Nm ferror , +.Nm ferror_unlocked , +.Nm fileno , +.Nm fileno_unlocked +.Nd check and reset stream status +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft void +.Fn clearerr "FILE *stream" +.Ft void +.Fn clearerr_unlocked "FILE *stream" +.Ft int +.Fn feof "FILE *stream" +.Ft int +.Fn feof_unlocked "FILE *stream" +.Ft int +.Fn ferror "FILE *stream" +.Ft int +.Fn ferror_unlocked "FILE *stream" +.Ft int +.Fn fileno "FILE *stream" +.Ft int +.Fn fileno_unlocked "FILE *stream" +.Sh DESCRIPTION +The function +.Fn clearerr +clears the end-of-file and error indicators for the stream pointed +to by +.Fa stream . +.Pp +The function +.Fn feof +tests the end-of-file indicator for the stream pointed to by +.Fa stream , +returning non-zero if it is set. +The end-of-file indicator can only be cleared by the function +.Fn clearerr . +.Pp +The function +.Fn ferror +tests the error indicator for the stream pointed to by +.Fa stream , +returning non-zero if it is set. +The error indicator can only be reset by the +.Fn clearerr +function. +.Pp +The function +.Fn fileno +examines the argument +.Fa stream +and returns its integer descriptor. +.Pp +The +.Fn clearerr_unlocked , +.Fn feof_unlocked , +.Fn ferror_unlocked , +and +.Fn fileno_unlocked +functions are equivalent to +.Fn clearerr , +.Fn feof , +.Fn ferror , +and +.Fn fileno +respectively, except that the caller is responsible for locking the stream +with +.Xr flockfile 3 +before calling them. +These functions may be used to avoid the overhead of locking the stream +and to prevent races when multiple threads are operating on the same stream. +.Sh ERRORS +These functions should not fail and do not set the external +variable +.Va errno . +.Sh SEE ALSO +.Xr open 2 , +.Xr fdopen 3 , +.Xr flockfile 3 , +.Xr stdio 3 +.Sh STANDARDS +The functions +.Fn clearerr , +.Fn feof , +and +.Fn ferror +conform to +.St -isoC . diff --git a/lib/libc/stdio/ferror.c b/lib/libc/stdio/ferror.c new file mode 100644 index 0000000..5d4c187 --- /dev/null +++ b/lib/libc/stdio/ferror.c @@ -0,0 +1,59 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ferror.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" + +#undef ferror + +int +ferror(FILE *fp) +{ + int ret; + + FLOCKFILE(fp); + ret = __sferror(fp); + FUNLOCKFILE(fp); + return (ret); +} diff --git a/lib/libc/stdio/fflush.3 b/lib/libc/stdio/fflush.3 new file mode 100644 index 0000000..6fa6d23 --- /dev/null +++ b/lib/libc/stdio/fflush.3 @@ -0,0 +1,115 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fflush.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt FFLUSH 3 +.Os +.Sh NAME +.Nm fflush , +.Nm fpurge +.Nd flush a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fflush "FILE *stream" +.Ft int +.Fn fpurge "FILE *stream" +.Sh DESCRIPTION +The function +.Fn fflush +forces a write of all buffered data for the given output or update +.Fa stream +via the stream's underlying write function. +The open status of the stream is unaffected. +.Pp +If the +.Fa stream +argument is +.Dv NULL , +.Fn fflush +flushes +.Em all +open output streams. +.Pp +The function +.Fn fpurge +erases any input or output buffered in the given +.Fa stream . +For output streams this discards any unwritten output. +For input streams this discards any input read from the underlying object +but not yet obtained via +.Xr getc 3 ; +this includes any text pushed back via +.Xr ungetc 3 . +.Sh RETURN VALUES +Upon successful completion 0 is returned. +Otherwise, +.Dv EOF +is returned and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The +.Fa stream +argument +is not an open stream, or, in the case of +.Fn fflush , +not a stream open for writing. +.El +.Pp +The function +.Fn fflush +may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr write 2 . +.Sh SEE ALSO +.Xr write 2 , +.Xr fclose 3 , +.Xr fopen 3 , +.Xr setbuf 3 +.Sh STANDARDS +The +.Fn fflush +function +conforms to +.St -isoC . diff --git a/lib/libc/stdio/fflush.c b/lib/libc/stdio/fflush.c new file mode 100644 index 0000000..3090dc9 --- /dev/null +++ b/lib/libc/stdio/fflush.c @@ -0,0 +1,145 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fflush.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +static int sflush_locked(FILE *); + +/* + * Flush a single file, or (if fp is NULL) all files. + * MT-safe version + */ +int +fflush(FILE *fp) +{ + int retval; + + if (fp == NULL) + return (_fwalk(sflush_locked)); + FLOCKFILE(fp); + + /* + * There is disagreement about the correct behaviour of fflush() + * when passed a file which is not open for reading. According to + * the ISO C standard, the behaviour is undefined. + * Under linux, such an fflush returns success and has no effect; + * under Windows, such an fflush is documented as behaving instead + * as fpurge(). + * Given that applications may be written with the expectation of + * either of these two behaviours, the only safe (non-astonishing) + * option is to return EBADF and ask that applications be fixed. + */ + if ((fp->_flags & (__SWR | __SRW)) == 0) { + errno = EBADF; + retval = EOF; + } else + retval = __sflush(fp); + FUNLOCKFILE(fp); + return (retval); +} + +/* + * Flush a single file, or (if fp is NULL) all files. + * Non-MT-safe version + */ +int +__fflush(FILE *fp) +{ + int retval; + + if (fp == NULL) + return (_fwalk(sflush_locked)); + if ((fp->_flags & (__SWR | __SRW)) == 0) { + errno = EBADF; + retval = EOF; + } else + retval = __sflush(fp); + return (retval); +} + +int +__sflush(FILE *fp) +{ + unsigned char *p; + int n, t; + + t = fp->_flags; + if ((t & __SWR) == 0) + return (0); + + if ((p = fp->_bf._base) == NULL) + return (0); + + n = fp->_p - p; /* write this much */ + + /* + * Set these immediately to avoid problems with longjmp and to allow + * exchange buffering (via setvbuf) in user write function. + */ + fp->_p = p; + fp->_w = t & (__SLBF|__SNBF) ? 0 : fp->_bf._size; + + for (; n > 0; n -= t, p += t) { + t = _swrite(fp, (char *)p, n); + if (t <= 0) { + fp->_flags |= __SERR; + return (EOF); + } + } + return (0); +} + +static int +sflush_locked(FILE *fp) +{ + int ret; + + FLOCKFILE(fp); + ret = __sflush(fp); + FUNLOCKFILE(fp); + return (ret); +} diff --git a/lib/libc/stdio/fgetc.c b/lib/libc/stdio/fgetc.c new file mode 100644 index 0000000..455c2ac --- /dev/null +++ b/lib/libc/stdio/fgetc.c @@ -0,0 +1,60 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fgetc.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +fgetc(fp) + FILE *fp; +{ + int retval; + FLOCKFILE(fp); + /* Orientation set by __sgetc() when buffer is empty. */ + /* ORIENT(fp, -1); */ + retval = __sgetc(fp); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/fgetln.3 b/lib/libc/stdio/fgetln.3 new file mode 100644 index 0000000..59156ef --- /dev/null +++ b/lib/libc/stdio/fgetln.3 @@ -0,0 +1,128 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fgetln.3 8.3 (Berkeley) 4/19/94 +.\" $FreeBSD$ +.\" +.Dd April 19, 1994 +.Dt FGETLN 3 +.Os +.Sh NAME +.Nm fgetln +.Nd get a line from a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft char * +.Fn fgetln "FILE *stream" "size_t *len" +.Sh DESCRIPTION +The +.Fn fgetln +function +returns a pointer to the next line from the stream referenced by +.Fa stream . +This line is +.Em not +a C string as it does not end with a terminating +.Dv NUL +character. +The length of the line, including the final newline, +is stored in the memory location to which +.Fa len +points. +(Note, however, that if the line is the last +in a file that does not end in a newline, +the returned text will not contain a newline.) +.Sh RETURN VALUES +Upon successful completion a pointer is returned; +this pointer becomes invalid after the next +.Tn I/O +operation on +.Fa stream +(whether successful or not) +or as soon as the stream is closed. +Otherwise, +.Dv NULL +is returned. +The +.Fn fgetln +function +does not distinguish between end-of-file and error; the routines +.Xr feof 3 +and +.Xr ferror 3 +must be used +to determine which occurred. +If an error occurs, the global variable +.Va errno +is set to indicate the error. +The end-of-file condition is remembered, even on a terminal, and all +subsequent attempts to read will return +.Dv NULL +until the condition is +cleared with +.Xr clearerr 3 . +.Pp +The text to which the returned pointer points may be modified, +provided that no changes are made beyond the returned size. +These changes are lost as soon as the pointer becomes invalid. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The argument +.Fa stream +is not a stream open for reading. +.El +.Pp +The +.Fn fgetln +function +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr fflush 3 , +.Xr malloc 3 , +.Xr read 2 , +.Xr stat 2 , +or +.Xr realloc 3 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fgets 3 , +.Xr fgetwln 3 , +.Xr fopen 3 , +.Xr putc 3 +.Sh HISTORY +The +.Fn fgetln +function first appeared in +.Bx 4.4 . diff --git a/lib/libc/stdio/fgetln.c b/lib/libc/stdio/fgetln.c new file mode 100644 index 0000000..d2efe09 --- /dev/null +++ b/lib/libc/stdio/fgetln.c @@ -0,0 +1,168 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fgetln.c 8.2 (Berkeley) 1/2/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +/* + * Expand the line buffer. Return -1 on error. +#ifdef notdef + * The `new size' does not account for a terminating '\0', + * so we add 1 here. +#endif + */ +int +__slbexpand(FILE *fp, size_t newsize) +{ + void *p; + +#ifdef notdef + ++newsize; +#endif + if (fp->_lb._size >= newsize) + return (0); + if ((p = realloc(fp->_lb._base, newsize)) == NULL) + return (-1); + fp->_lb._base = p; + fp->_lb._size = newsize; + return (0); +} + +/* + * Get an input line. The returned pointer often (but not always) + * points into a stdio buffer. Fgetln does not alter the text of + * the returned line (which is thus not a C string because it will + * not necessarily end with '\0'), but does allow callers to modify + * it if they wish. Thus, we set __SMOD in case the caller does. + */ +char * +fgetln(FILE *fp, size_t *lenp) +{ + unsigned char *p; + size_t len; + size_t off; + + FLOCKFILE(fp); + ORIENT(fp, -1); + /* make sure there is input */ + if (fp->_r <= 0 && __srefill(fp)) { + *lenp = 0; + FUNLOCKFILE(fp); + return (NULL); + } + + /* look for a newline in the input */ + if ((p = memchr((void *)fp->_p, '\n', (size_t)fp->_r)) != NULL) { + char *ret; + + /* + * Found one. Flag buffer as modified to keep fseek from + * `optimising' a backward seek, in case the user stomps on + * the text. + */ + p++; /* advance over it */ + ret = (char *)fp->_p; + *lenp = len = p - fp->_p; + fp->_flags |= __SMOD; + fp->_r -= len; + fp->_p = p; + FUNLOCKFILE(fp); + return (ret); + } + + /* + * We have to copy the current buffered data to the line buffer. + * As a bonus, though, we can leave off the __SMOD. + * + * OPTIMISTIC is length that we (optimistically) expect will + * accomodate the `rest' of the string, on each trip through the + * loop below. + */ +#define OPTIMISTIC 80 + + for (len = fp->_r, off = 0;; len += fp->_r) { + size_t diff; + + /* + * Make sure there is room for more bytes. Copy data from + * file buffer to line buffer, refill file and look for + * newline. The loop stops only when we find a newline. + */ + if (__slbexpand(fp, len + OPTIMISTIC)) + goto error; + (void)memcpy((void *)(fp->_lb._base + off), (void *)fp->_p, + len - off); + off = len; + if (__srefill(fp)) + break; /* EOF or error: return partial line */ + if ((p = memchr((void *)fp->_p, '\n', (size_t)fp->_r)) == NULL) + continue; + + /* got it: finish up the line (like code above) */ + p++; + diff = p - fp->_p; + len += diff; + if (__slbexpand(fp, len)) + goto error; + (void)memcpy((void *)(fp->_lb._base + off), (void *)fp->_p, + diff); + fp->_r -= diff; + fp->_p = p; + break; + } + *lenp = len; +#ifdef notdef + fp->_lb._base[len] = 0; +#endif + FUNLOCKFILE(fp); + return ((char *)fp->_lb._base); + +error: + *lenp = 0; /* ??? */ + FUNLOCKFILE(fp); + return (NULL); /* ??? */ +} diff --git a/lib/libc/stdio/fgetpos.c b/lib/libc/stdio/fgetpos.c new file mode 100644 index 0000000..295b20a --- /dev/null +++ b/lib/libc/stdio/fgetpos.c @@ -0,0 +1,55 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fgetpos.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +int +fgetpos(FILE * __restrict fp, fpos_t * __restrict pos) +{ + /* + * ftello is thread-safe; no need to lock fp. + */ + if ((*pos = ftello(fp)) == (fpos_t)-1) + return (-1); + else + return (0); +} diff --git a/lib/libc/stdio/fgets.3 b/lib/libc/stdio/fgets.3 new file mode 100644 index 0000000..06e3c04 --- /dev/null +++ b/lib/libc/stdio/fgets.3 @@ -0,0 +1,161 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fgets.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt FGETS 3 +.Os +.Sh NAME +.Nm fgets , +.Nm gets +.Nd get a line from a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft char * +.Fn fgets "char * restrict str" "int size" "FILE * restrict stream" +.Ft char * +.Fn gets "char *str" +.Sh DESCRIPTION +The +.Fn fgets +function +reads at most one less than the number of characters specified by +.Fa size +from the given +.Fa stream +and stores them in the string +.Fa str . +Reading stops when a newline character is found, +at end-of-file or error. +The newline, if any, is retained. +If any characters are read and there is no error, a +.Ql \e0 +character is appended to end the string. +.Pp +The +.Fn gets +function +is equivalent to +.Fn fgets +with an infinite +.Fa size +and a +.Fa stream +of +.Dv stdin , +except that the newline character (if any) is not stored in the string. +It is the caller's responsibility to ensure that the input line, +if any, is sufficiently short to fit in the string. +.Sh RETURN VALUES +Upon successful completion, +.Fn fgets +and +.Fn gets +return +a pointer to the string. +If end-of-file occurs before any characters are read, +they return +.Dv NULL +and the buffer contents remain unchanged. +If an error occurs, +they return +.Dv NULL +and the buffer contents are indeterminate. +The +.Fn fgets +and +.Fn gets +functions +do not distinguish between end-of-file and error, and callers must use +.Xr feof 3 +and +.Xr ferror 3 +to determine which occurred. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The given +.Fa stream +is not a readable stream. +.El +.Pp +The function +.Fn fgets +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr fflush 3 , +.Xr fstat 2 , +.Xr read 2 , +or +.Xr malloc 3 . +.Pp +The function +.Fn gets +may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr getchar 3 . +.Sh SECURITY CONSIDERATIONS +The +.Fn gets +function cannot be used securely. +Because of its lack of bounds checking, +and the inability for the calling program +to reliably determine the length of the next incoming line, +the use of this function enables malicious users +to arbitrarily change a running program's functionality through +a buffer overflow attack. +It is strongly suggested that the +.Fn fgets +function be used in all cases. +(See +the FSA.) +.Sh SEE ALSO +.Xr feof 3 , +.Xr ferror 3 , +.Xr fgetln 3 , +.Xr fgetws 3 +.Sh STANDARDS +The functions +.Fn fgets +and +.Fn gets +conform to +.St -isoC-99 . diff --git a/lib/libc/stdio/fgets.c b/lib/libc/stdio/fgets.c new file mode 100644 index 0000000..bb4ea4c --- /dev/null +++ b/lib/libc/stdio/fgets.c @@ -0,0 +1,116 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fgets.c 8.2 (Berkeley) 12/22/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <string.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +/* + * Read at most n-1 characters from the given file. + * Stop when a newline has been read, or the count runs out. + * Return first argument, or NULL if no characters were read. + */ +char * +fgets(buf, n, fp) + char *buf; + int n; + FILE *fp; +{ + size_t len; + char *s; + unsigned char *p, *t; + + if (n <= 0) /* sanity check */ + return (NULL); + + FLOCKFILE(fp); + ORIENT(fp, -1); + s = buf; + n--; /* leave space for NUL */ + while (n != 0) { + /* + * If the buffer is empty, refill it. + */ + if ((len = fp->_r) <= 0) { + if (__srefill(fp)) { + /* EOF/error: stop with partial or no line */ + if (s == buf) { + FUNLOCKFILE(fp); + return (NULL); + } + break; + } + len = fp->_r; + } + p = fp->_p; + + /* + * Scan through at most n bytes of the current buffer, + * looking for '\n'. If found, copy up to and including + * newline, and stop. Otherwise, copy entire chunk + * and loop. + */ + if (len > n) + len = n; + t = memchr((void *)p, '\n', len); + if (t != NULL) { + len = ++t - p; + fp->_r -= len; + fp->_p = t; + (void)memcpy((void *)s, (void *)p, len); + s[len] = 0; + FUNLOCKFILE(fp); + return (buf); + } + fp->_r -= len; + fp->_p += len; + (void)memcpy((void *)s, (void *)p, len); + s += len; + n -= len; + } + *s = 0; + FUNLOCKFILE(fp); + return (buf); +} diff --git a/lib/libc/stdio/fgetwc.c b/lib/libc/stdio/fgetwc.c new file mode 100644 index 0000000..719556a --- /dev/null +++ b/lib/libc/stdio/fgetwc.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" +#include "mblocal.h" + +/* + * MT-safe version. + */ +wint_t +fgetwc(FILE *fp) +{ + wint_t r; + + FLOCKFILE(fp); + ORIENT(fp, 1); + r = __fgetwc(fp); + FUNLOCKFILE(fp); + + return (r); +} + +/* + * Non-MT-safe version. + */ +wint_t +__fgetwc(FILE *fp) +{ + wchar_t wc; + size_t nconv; + + if (fp->_r <= 0 && __srefill(fp)) + return (WEOF); + if (MB_CUR_MAX == 1) { + /* Fast path for single-byte encodings. */ + wc = *fp->_p++; + fp->_r--; + return (wc); + } + do { + nconv = __mbrtowc(&wc, fp->_p, fp->_r, &fp->_extra->mbstate); + if (nconv == (size_t)-1) + break; + else if (nconv == (size_t)-2) + continue; + else if (nconv == 0) { + /* + * Assume that the only valid representation of + * the null wide character is a single null byte. + */ + fp->_p++; + fp->_r--; + return (L'\0'); + } else { + fp->_p += nconv; + fp->_r -= nconv; + return (wc); + } + } while (__srefill(fp) == 0); + fp->_flags |= __SERR; + errno = EILSEQ; + return (WEOF); +} diff --git a/lib/libc/stdio/fgetwln.3 b/lib/libc/stdio/fgetwln.3 new file mode 100644 index 0000000..991b460 --- /dev/null +++ b/lib/libc/stdio/fgetwln.3 @@ -0,0 +1,120 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fgetln.3 8.3 (Berkeley) 4/19/94 +.\" $FreeBSD$ +.\" +.Dd July 16, 2004 +.Dt FGETWLN 3 +.Os +.Sh NAME +.Nm fgetwln +.Nd get a line of wide characters from a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft wchar_t * +.Fn fgetwln "FILE * restrict stream" "size_t * restrict len" +.Sh DESCRIPTION +The +.Fn fgetwln +function +returns a pointer to the next line from the stream referenced by +.Fa stream . +This line is +.Em not +a standard wide character string as it does not end with a terminating +null wide character. +The length of the line, including the final newline, +is stored in the memory location to which +.Fa len +points. +(Note, however, that if the line is the last +in a file that does not end in a newline, +the returned text will not contain a newline.) +.Sh RETURN VALUES +Upon successful completion a pointer is returned; +this pointer becomes invalid after the next +.Tn I/O +operation on +.Fa stream +(whether successful or not) +or as soon as the stream is closed. +Otherwise, +.Dv NULL +is returned. +The +.Fn fgetwln +function +does not distinguish between end-of-file and error; the routines +.Xr feof 3 +and +.Xr ferror 3 +must be used +to determine which occurred. +If an error occurs, the global variable +.Va errno +is set to indicate the error. +The end-of-file condition is remembered, even on a terminal, and all +subsequent attempts to read will return +.Dv NULL +until the condition is +cleared with +.Xr clearerr 3 . +.Pp +The text to which the returned pointer points may be modified, +provided that no changes are made beyond the returned size. +These changes are lost as soon as the pointer becomes invalid. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The argument +.Fa stream +is not a stream open for reading. +.El +.Pp +The +.Fn fgetwln +function +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr mbrtowc 3 , +.Xr realloc 3 , +or +.Xr read 2 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fgetln 3 , +.Xr fgetws 3 , +.Xr fopen 3 diff --git a/lib/libc/stdio/fgetwln.c b/lib/libc/stdio/fgetwln.c new file mode 100644 index 0000000..1a1ad2d --- /dev/null +++ b/lib/libc/stdio/fgetwln.c @@ -0,0 +1,67 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +wchar_t * +fgetwln(FILE * __restrict fp, size_t *lenp) +{ + wint_t wc; + size_t len; + + FLOCKFILE(fp); + ORIENT(fp, 1); + + len = 0; + while ((wc = __fgetwc(fp)) != WEOF) { +#define GROW 512 + if (len * sizeof(wchar_t) >= fp->_lb._size && + __slbexpand(fp, (len + GROW) * sizeof(wchar_t))) + goto error; + *((wchar_t *)fp->_lb._base + len++) = wc; + if (wc == L'\n') + break; + } + if (len == 0) + goto error; + + FUNLOCKFILE(fp); + *lenp = len; + return ((wchar_t *)fp->_lb._base); + +error: + FUNLOCKFILE(fp); + *lenp = 0; + return (NULL); +} diff --git a/lib/libc/stdio/fgetws.3 b/lib/libc/stdio/fgetws.3 new file mode 100644 index 0000000..dc04275 --- /dev/null +++ b/lib/libc/stdio/fgetws.3 @@ -0,0 +1,125 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fgets.3 8.1 (Berkeley) 6/4/93 +.\" FreeBSD: src/lib/libc/stdio/fgets.3,v 1.16 2002/05/31 05:01:17 archie Exp +.\" $FreeBSD$ +.\" +.Dd August 6, 2002 +.Dt FGETWS 3 +.Os +.Sh NAME +.Nm fgetws +.Nd get a line of wide characters from a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft "wchar_t *" +.Fn fgetws "wchar_t * restrict ws" "int n" "FILE * restrict fp" +.Sh DESCRIPTION +The +.Fn fgetws +function +reads at most one less than the number of characters specified by +.Fa n +from the given +.Fa fp +and stores them in the wide character string +.Fa ws . +Reading stops when a newline character is found, +at end-of-file or error. +The newline, if any, is retained. +If any characters are read and there is no error, a +.Ql \e0 +character is appended to end the string. +.Sh RETURN VALUES +Upon successful completion, +.Fn fgetws +returns +.Fa ws . +If end-of-file occurs before any characters are read, +.Fn fgetws +returns +.Dv NULL +and the buffer contents remain unchanged. +If an error occurs, +.Fn fgetws +returns +.Dv NULL +and the buffer contents are indeterminate. +The +.Fn fgetws +function +does not distinguish between end-of-file and error, and callers must use +.Xr feof 3 +and +.Xr ferror 3 +to determine which occurred. +.Sh ERRORS +The +.Fn fgetws +function will fail if: +.Bl -tag -width Er +.It Bq Er EBADF +The given +.Fa fp +argument is not a readable stream. +.It Bq Er EILSEQ +The data obtained from the input stream does not form a valid +multibyte character. +.El +.Pp +The function +.Fn fgetws +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr fflush 3 , +.Xr fstat 2 , +.Xr read 2 , +or +.Xr malloc 3 . +.Sh SEE ALSO +.Xr feof 3 , +.Xr ferror 3 , +.Xr fgets 3 +.Sh STANDARDS +The +.Fn fgetws +function +conforms to +.St -p1003.1-2001 . diff --git a/lib/libc/stdio/fgetws.c b/lib/libc/stdio/fgetws.c new file mode 100644 index 0000000..b6ef01e --- /dev/null +++ b/lib/libc/stdio/fgetws.c @@ -0,0 +1,100 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" +#include "mblocal.h" + +wchar_t * +fgetws(wchar_t * __restrict ws, int n, FILE * __restrict fp) +{ + wchar_t *wsp; + size_t nconv; + const char *src; + unsigned char *nl; + + FLOCKFILE(fp); + ORIENT(fp, 1); + + if (n <= 0) { + errno = EINVAL; + goto error; + } + + if (fp->_r <= 0 && __srefill(fp)) + /* EOF */ + goto error; + wsp = ws; + do { + src = fp->_p; + nl = memchr(fp->_p, '\n', fp->_r); + nconv = __mbsnrtowcs(wsp, &src, + nl != NULL ? (nl - fp->_p + 1) : fp->_r, + n - 1, &fp->_extra->mbstate); + if (nconv == (size_t)-1) + /* Conversion error */ + goto error; + if (src == NULL) { + /* + * We hit a null byte. Increment the character count, + * since mbsnrtowcs()'s return value doesn't include + * the terminating null, then resume conversion + * after the null. + */ + nconv++; + src = memchr(fp->_p, '\0', fp->_r); + src++; + } + fp->_r -= (unsigned char *)src - fp->_p; + fp->_p = (unsigned char *)src; + n -= nconv; + wsp += nconv; + } while (wsp[-1] != L'\n' && n > 1 && (fp->_r > 0 || + __srefill(fp) == 0)); + if (wsp == ws) + /* EOF */ + goto error; + if (!__mbsinit(&fp->_extra->mbstate)) + /* Incomplete character */ + goto error; + *wsp++ = L'\0'; + FUNLOCKFILE(fp); + + return (ws); + +error: + FUNLOCKFILE(fp); + return (NULL); +} diff --git a/lib/libc/stdio/fileno.c b/lib/libc/stdio/fileno.c new file mode 100644 index 0000000..51c0464 --- /dev/null +++ b/lib/libc/stdio/fileno.c @@ -0,0 +1,60 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fileno.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" + +#undef fileno + +int +fileno(FILE *fp) +{ + int fd; + + FLOCKFILE(fp); + fd = __sfileno(fp); + FUNLOCKFILE(fp); + + return (fd); +} diff --git a/lib/libc/stdio/findfp.c b/lib/libc/stdio/findfp.c new file mode 100644 index 0000000..26d4dcf --- /dev/null +++ b/lib/libc/stdio/findfp.c @@ -0,0 +1,249 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)findfp.c 8.2 (Berkeley) 1/4/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <machine/atomic.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <spinlock.h> + +#include "libc_private.h" +#include "local.h" +#include "glue.h" + +int __sdidinit; + +#define NDYNAMIC 10 /* add ten more whenever necessary */ + +#define std(flags, file) \ + {0,0,0,flags,file,{0},0,__sF+file,__sclose,__sread,__sseek,__swrite, \ + {0}, __sFX + file} + /* p r w flags file _bf z cookie close read seek write */ + /* _ub _extra */ + /* the usual - (stdin + stdout + stderr) */ +static FILE usual[FOPEN_MAX - 3]; +static struct __sFILEX usual_extra[FOPEN_MAX - 3]; +static struct glue uglue = { NULL, FOPEN_MAX - 3, usual }; + +static struct __sFILEX __sFX[3]; + +/* + * We can't make this 'static' until 6.0-current due to binary + * compatibility concerns. This also means we cannot change the + * sizeof(FILE) until that time either and must continue to use the + * __sFILEX stuff to add to FILE. + */ +FILE __sF[3] = { + std(__SRD, STDIN_FILENO), + std(__SWR, STDOUT_FILENO), + std(__SWR|__SNBF, STDERR_FILENO) +}; + +/* + * The following kludge is done to ensure enough binary compatibility + * with future versions of libc. Or rather it allows us to work with + * libraries that have been built with a newer libc that defines these + * symbols and expects libc to provide them. We only have need to support + * i386 and alpha because they are the only "old" systems we have deployed. + */ +FILE *__stdinp = &__sF[0]; +FILE *__stdoutp = &__sF[1]; +FILE *__stderrp = &__sF[2]; + +struct glue __sglue = { &uglue, 3, __sF }; +static struct glue *lastglue = &uglue; + +static struct glue * moreglue(int); + +static spinlock_t thread_lock = _SPINLOCK_INITIALIZER; +#define THREAD_LOCK() if (__isthreaded) _SPINLOCK(&thread_lock) +#define THREAD_UNLOCK() if (__isthreaded) _SPINUNLOCK(&thread_lock) + +#if NOT_YET +#define SET_GLUE_PTR(ptr, val) atomic_set_rel_ptr(&(ptr), (uintptr_t)(val)) +#else +#define SET_GLUE_PTR(ptr, val) ptr = val +#endif + +static struct glue * +moreglue(n) + int n; +{ + struct glue *g; + static FILE empty; + static struct __sFILEX emptyx; + FILE *p; + struct __sFILEX *fx; + + g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE) + + n * sizeof(struct __sFILEX)); + if (g == NULL) + return (NULL); + p = (FILE *)ALIGN(g + 1); + fx = (struct __sFILEX *)&p[n]; + g->next = NULL; + g->niobs = n; + g->iobs = p; + while (--n >= 0) { + *p = empty; + p->_extra = fx; + *p->_extra = emptyx; + p++, fx++; + } + return (g); +} + +/* + * Find a free FILE for fopen et al. + */ +FILE * +__sfp() +{ + FILE *fp; + int n; + struct glue *g; + + if (!__sdidinit) + __sinit(); + /* + * The list must be locked because a FILE may be updated. + */ + THREAD_LOCK(); + for (g = &__sglue; g != NULL; g = g->next) { + for (fp = g->iobs, n = g->niobs; --n >= 0; fp++) + if (fp->_flags == 0) + goto found; + } + THREAD_UNLOCK(); /* don't hold lock while malloc()ing. */ + if ((g = moreglue(NDYNAMIC)) == NULL) + return (NULL); + THREAD_LOCK(); /* reacquire the lock */ + SET_GLUE_PTR(lastglue->next, g); /* atomically append glue to list */ + lastglue = g; /* not atomic; only accessed when locked */ + fp = g->iobs; +found: + fp->_flags = 1; /* reserve this slot; caller sets real flags */ + THREAD_UNLOCK(); + fp->_p = NULL; /* no current pointer */ + fp->_w = 0; /* nothing to read or write */ + fp->_r = 0; + fp->_bf._base = NULL; /* no buffer */ + fp->_bf._size = 0; + fp->_lbfsize = 0; /* not line buffered */ + fp->_file = -1; /* no file */ +/* fp->_cookie = <any>; */ /* caller sets cookie, _read/_write etc */ + fp->_ub._base = NULL; /* no ungetc buffer */ + fp->_ub._size = 0; + fp->_lb._base = NULL; /* no line buffer */ + fp->_lb._size = 0; +/* fp->_lock = NULL; */ /* once set always set (reused) */ + fp->_extra->orientation = 0; + memset(&fp->_extra->mbstate, 0, sizeof(mbstate_t)); + return (fp); +} + +/* + * XXX. Force immediate allocation of internal memory. Not used by stdio, + * but documented historically for certain applications. Bad applications. + */ +__warn_references(f_prealloc, + "warning: this program uses f_prealloc(), which is not recommended."); + +void +f_prealloc() +{ + struct glue *g; + int n; + + n = getdtablesize() - FOPEN_MAX + 20; /* 20 for slop. */ + /* + * It should be safe to walk the list without locking it; + * new nodes are only added to the end and none are ever + * removed. + */ + for (g = &__sglue; (n -= g->niobs) > 0 && g->next; g = g->next) + /* void */; + if ((n > 0) && ((g = moreglue(n)) != NULL)) { + THREAD_LOCK(); + SET_GLUE_PTR(lastglue->next, g); + lastglue = g; + THREAD_UNLOCK(); + } +} + +/* + * exit() calls _cleanup() through *__cleanup, set whenever we + * open or buffer a file. This chicanery is done so that programs + * that do not use stdio need not link it all in. + * + * The name `_cleanup' is, alas, fairly well known outside stdio. + */ +void +_cleanup() +{ + /* (void) _fwalk(fclose); */ + (void) _fwalk(__sflush); /* `cheating' */ +} + +/* + * __sinit() is called whenever stdio's internal variables must be set up. + */ +void +__sinit() +{ + int i; + + THREAD_LOCK(); + if (__sdidinit == 0) { + /* Set _extra for the usual suspects. */ + for (i = 0; i < FOPEN_MAX - 3; i++) + usual[i]._extra = &usual_extra[i]; + + /* Make sure we clean up on exit. */ + __cleanup = _cleanup; /* conservative */ + __sdidinit = 1; + } + THREAD_UNLOCK(); +} diff --git a/lib/libc/stdio/flags.c b/lib/libc/stdio/flags.c new file mode 100644 index 0000000..8a1c7d0 --- /dev/null +++ b/lib/libc/stdio/flags.c @@ -0,0 +1,94 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)flags.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/file.h> +#include <stdio.h> +#include <errno.h> + +#include "local.h" + +/* + * Return the (stdio) flags for a given mode. Store the flags + * to be passed to an _open() syscall through *optr. + * Return 0 on error. + */ +int +__sflags(mode, optr) + const char *mode; + int *optr; +{ + int ret, m, o; + + switch (*mode++) { + + case 'r': /* open for reading */ + ret = __SRD; + m = O_RDONLY; + o = 0; + break; + + case 'w': /* open for writing */ + ret = __SWR; + m = O_WRONLY; + o = O_CREAT | O_TRUNC; + break; + + case 'a': /* open for appending */ + ret = __SWR; + m = O_WRONLY; + o = O_CREAT | O_APPEND; + break; + + default: /* illegal mode */ + errno = EINVAL; + return (0); + } + + /* [rwa]\+ or [rwa]b\+ means read and write */ + if (*mode == '+' || (*mode == 'b' && mode[1] == '+')) { + ret = __SRW; + m = O_RDWR; + } + *optr = m | o; + return (ret); +} diff --git a/lib/libc/stdio/floatio.h b/lib/libc/stdio/floatio.h new file mode 100644 index 0000000..2463a85 --- /dev/null +++ b/lib/libc/stdio/floatio.h @@ -0,0 +1,58 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)floatio.h 8.1 (Berkeley) 6/4/93 + * $FreeBSD$ + */ + +/* + * Floating point scanf/printf (input/output) definitions. + */ + +/* + * MAXEXPDIG is the maximum number of decimal digits needed to store a + * floating point exponent in the largest supported format. It should + * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point + * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it + * is presently never greater than 5 in practice, we fudge it. + */ +#define MAXEXPDIG 6 +#if LDBL_MAX_EXP > 999999 +#error "floating point buffers too small" +#endif + +char *__hdtoa(double, const char *, int, int *, int *, char **); +char *__hldtoa(long double, const char *, int, int *, int *, char **); +char *__ldtoa(long double *, int, int, int *, int *, char **); diff --git a/lib/libc/stdio/flockfile.3 b/lib/libc/stdio/flockfile.3 new file mode 100644 index 0000000..a895a0a --- /dev/null +++ b/lib/libc/stdio/flockfile.3 @@ -0,0 +1,104 @@ +.\" Copyright (c) 2003 Tim J. Robbins +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 10, 2003 +.Dt FLOCKFILE 3 +.Os +.Sh NAME +.Nm flockfile , +.Nm ftrylockfile , +.Nm funlockfile +.Nd "stdio locking functions" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft void +.Fn flockfile "FILE *stream" +.Ft int +.Fn ftrylockfile "FILE *stream" +.Ft void +.Fn funlockfile "FILE *stream" +.Sh DESCRIPTION +These functions provide explicit application-level locking of stdio streams. +They can be used to avoid output from multiple threads being interspersed, +input being dispersed among multiple readers, and to avoid the overhead +of locking the stream for each operation. +.Pp +The +.Fn flockfile +function acquires an exclusive lock on the specified stream. +If another thread has already locked the stream, +.Fn flockfile +will block until the lock is released. +.Pp +The +.Fn ftrylockfile +function is a non-blocking version of +.Fn flockfile ; +if the lock cannot be acquired immediately, +.Fn ftrylockfile +returns non-zero instead of blocking. +.Pp +The +.Fn funlockfile +function releases the lock on a stream acquired by an earlier call to +.Fn flockfile +or +.Fn ftrylockfile . +.Pp +These functions behave as if there is a lock count associated +with each stream. +Each time +.Fn flockfile +is called on the stream, the count is incremented, +and each time +.Fn funlockfile +is called on the stream, the count is decremented. +The lock is only actually released when the count reaches zero. +.Sh RETURN VALUES +The +.Fn flockfile +and +.Fn funlockfile +functions return no value. +.Pp +The +.Fn ftrylockfile +function +returns zero if the stream was successfully locked, +non-zero otherwise. +.Sh SEE ALSO +.Xr getc_unlocked 3 , +.Xr putc_unlocked 3 +.Sh STANDARDS +The +.Fn flockfile , +.Fn ftrylockfile +and +.Fn funlockfile +functions conform to +.St -p1003.1-2001 . diff --git a/lib/libc/stdio/fopen.3 b/lib/libc/stdio/fopen.3 new file mode 100644 index 0000000..e0680da --- /dev/null +++ b/lib/libc/stdio/fopen.3 @@ -0,0 +1,287 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fopen.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd January 26, 2003 +.Dt FOPEN 3 +.Os +.Sh NAME +.Nm fopen , +.Nm fdopen , +.Nm freopen +.Nd stream open functions +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft FILE * +.Fn fopen "const char * restrict path" "const char * restrict mode" +.Ft FILE * +.Fn fdopen "int fildes" "const char *mode" +.Ft FILE * +.Fn freopen "const char *path" "const char *mode" "FILE *stream" +.Sh DESCRIPTION +The +.Fn fopen +function +opens the file whose name is the string pointed to by +.Fa path +and associates a stream with it. +.Pp +The argument +.Fa mode +points to a string beginning with one of the following +sequences (Additional characters may follow these sequences.): +.Bl -tag -width indent +.It Dq Li r +Open text file for reading. +The stream is positioned at the beginning of the file. +.It Dq Li r+ +Open for reading and writing. +The stream is positioned at the beginning of the file. +.It Dq Li w +Truncate to zero length or create text file for writing. +The stream is positioned at the beginning of the file. +.It Dq Li w+ +Open for reading and writing. +The file is created if it does not exist, otherwise it is truncated. +The stream is positioned at the beginning of the file. +.It Dq Li a +Open for writing. +The file is created if it does not exist. +The stream is positioned at the end of the file. +Subsequent writes to the file will always end up at the then current +end of file, irrespective of any intervening +.Xr fseek 3 +or similar. +.It Dq Li a+ +Open for reading and writing. +The file is created if it does not exist. +The stream is positioned at the end of the file. +Subsequent writes to the file will always end up at the then current +end of file, irrespective of any intervening +.Xr fseek 3 +or similar. +.El +.Pp +The +.Fa mode +string can also include the letter ``b'' either as a third character or +as a character between the characters in any of the two-character strings +described above. +This is strictly for compatibility with +.St -isoC +and has no effect; the ``b'' is ignored. +.Pp +Any created files will have mode +.Pf \\*q Dv S_IRUSR +\&| +.Dv S_IWUSR +\&| +.Dv S_IRGRP +\&| +.Dv S_IWGRP +\&| +.Dv S_IROTH +\&| +.Dv S_IWOTH Ns \\*q +.Pq Li 0666 , +as modified by the process' +umask value (see +.Xr umask 2 ) . +.Pp +Reads and writes may be intermixed on read/write streams in any order, +and do not require an intermediate seek as in previous versions of +.Em stdio . +This is not portable to other systems, however; +.Tn ANSI C +requires that +a file positioning function intervene between output and input, unless +an input operation encounters end-of-file. +.Pp +The +.Fn fdopen +function associates a stream with the existing file descriptor, +.Fa fildes . +The mode +of the stream must be compatible with the mode of the file descriptor. +When the stream is closed via +.Xr fclose 3 , +.Fa fildes +is closed also. +.Pp +The +.Fn freopen +function +opens the file whose name is the string pointed to by +.Fa path +and associates the stream pointed to by +.Fa stream +with it. +The original stream (if it exists) is closed. +The +.Fa mode +argument is used just as in the +.Fn fopen +function. +.Pp +If the +.Fa path +argument is +.Dv NULL , +.Fn freopen +attempts to re-open the file associated with +.Fa stream +with a new mode. +The new mode must be compatible with the mode that the stream was originally +opened with: +.Bl -bullet -offset indent +.It +Streams originally opened with mode +.Dq Li r +can only be reopened with that same mode. +.It +Streams originally opened with mode +.Dq Li a +can be reopened with the same mode, or mode +.Dq Li w . +.It +Streams originally opened with mode +.Dq Li w +can be reopened with the same mode, or mode +.Dq Li a . +.It +Streams originally opened with mode +.Dq Li r+ , +.Dq Li w+ , +or +.Dq Li a+ +can be reopened with any mode. +.El +.Pp +The primary use of the +.Fn freopen +function +is to change the file associated with a +standard text stream +.Dv ( stderr , stdin , +or +.Dv stdout ) . +.Sh RETURN VALUES +Upon successful completion +.Fn fopen , +.Fn fdopen +and +.Fn freopen +return a +.Tn FILE +pointer. +Otherwise, +.Dv NULL +is returned and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EINVAL +The +.Fa mode +argument +to +.Fn fopen , +.Fn fdopen , +or +.Fn freopen +was invalid. +.El +.Pp +The +.Fn fopen , +.Fn fdopen +and +.Fn freopen +functions +may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr malloc 3 . +.Pp +The +.Fn fopen +function +may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr open 2 . +.Pp +The +.Fn fdopen +function +may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr fcntl 2 . +.Pp +The +.Fn freopen +function +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr open 2 , +.Xr fclose 3 +and +.Xr fflush 3 . +.Sh SEE ALSO +.Xr open 2 , +.Xr fclose 3 , +.Xr fileno 3 , +.Xr fseek 3 , +.Xr funopen 3 +.Sh STANDARDS +The +.Fn fopen +and +.Fn freopen +functions +conform to +.St -isoC . +The +.Fn fdopen +function +conforms to +.St -p1003.1-88 . diff --git a/lib/libc/stdio/fopen.c b/lib/libc/stdio/fopen.c new file mode 100644 index 0000000..b7c84a7 --- /dev/null +++ b/lib/libc/stdio/fopen.c @@ -0,0 +1,88 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fopen.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdio.h> +#include <errno.h> +#include "un-namespace.h" + +#include "local.h" + +FILE * +fopen(file, mode) + const char * __restrict file; + const char * __restrict mode; +{ + FILE *fp; + int f; + int flags, oflags; + + if ((flags = __sflags(mode, &oflags)) == 0) + return (NULL); + if ((fp = __sfp()) == NULL) + return (NULL); + if ((f = _open(file, oflags, DEFFILEMODE)) < 0) { + fp->_flags = 0; /* release */ + return (NULL); + } + fp->_file = f; + fp->_flags = flags; + fp->_cookie = fp; + fp->_read = __sread; + fp->_write = __swrite; + fp->_seek = __sseek; + fp->_close = __sclose; + /* + * When opening in append mode, even though we use O_APPEND, + * we need to seek to the end so that ftell() gets the right + * answer. If the user then alters the seek pointer, or + * the file extends, this will fail, but there is not much + * we can do about this. (We could set __SAPP and check in + * fseek and ftell.) + */ + if (oflags & O_APPEND) + (void)_sseek(fp, (fpos_t)0, SEEK_END); + return (fp); +} diff --git a/lib/libc/stdio/fprintf.c b/lib/libc/stdio/fprintf.c new file mode 100644 index 0000000..27b8222 --- /dev/null +++ b/lib/libc/stdio/fprintf.c @@ -0,0 +1,56 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdarg.h> + +int +fprintf(FILE * __restrict fp, const char * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + ret = vfprintf(fp, fmt, ap); + va_end(ap); + return (ret); +} diff --git a/lib/libc/stdio/fpurge.c b/lib/libc/stdio/fpurge.c new file mode 100644 index 0000000..b653bc5 --- /dev/null +++ b/lib/libc/stdio/fpurge.c @@ -0,0 +1,74 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fpurge.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +/* + * fpurge: like fflush, but without writing anything: leave the + * given FILE's buffer empty. + */ +int +fpurge(fp) + FILE *fp; +{ + int retval; + FLOCKFILE(fp); + if (!fp->_flags) { + errno = EBADF; + retval = EOF; + } else { + if (HASUB(fp)) + FREEUB(fp); + fp->_p = fp->_bf._base; + fp->_r = 0; + fp->_w = fp->_flags & (__SLBF|__SNBF) ? 0 : fp->_bf._size; + retval = 0; + } + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/fputc.c b/lib/libc/stdio/fputc.c new file mode 100644 index 0000000..97de1c0 --- /dev/null +++ b/lib/libc/stdio/fputc.c @@ -0,0 +1,61 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fputc.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +int +fputc(c, fp) + int c; + FILE *fp; +{ + int retval; + FLOCKFILE(fp); + /* Orientation set by __sputc() when buffer is full. */ + /* ORIENT(fp, -1); */ + retval = __sputc(c, fp); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/fputs.3 b/lib/libc/stdio/fputs.3 new file mode 100644 index 0000000..3ce20b2 --- /dev/null +++ b/lib/libc/stdio/fputs.3 @@ -0,0 +1,111 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fputs.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt FPUTS 3 +.Os +.Sh NAME +.Nm fputs , +.Nm puts +.Nd output a line to a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fputs "const char *str" "FILE *stream" +.Ft int +.Fn puts "const char *str" +.Sh DESCRIPTION +The function +.Fn fputs +writes the string pointed to by +.Fa str +to the stream pointed to by +.Fa stream . +.\" The terminating +.\" .Dv NUL +.\" character is not written. +.Pp +The function +.Fn puts +writes the string +.Fa str , +and a terminating newline character, +to the stream +.Dv stdout . +.Sh RETURN VALUES +The +.Fn fputs +function +returns 0 on success and +.Dv EOF +on error; +.Fn puts +returns a nonnegative integer on success and +.Dv EOF +on error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The +.Fa stream +argument +is not a writable stream. +.El +.Pp +The functions +.Fn fputs +and +.Fn puts +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr write 2 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fputws 3 , +.Xr putc 3 , +.Xr stdio 3 +.Sh STANDARDS +The functions +.Fn fputs +and +.Fn puts +conform to +.St -isoC . diff --git a/lib/libc/stdio/fputs.c b/lib/libc/stdio/fputs.c new file mode 100644 index 0000000..812c37d --- /dev/null +++ b/lib/libc/stdio/fputs.c @@ -0,0 +1,72 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fputs.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <string.h> +#include "un-namespace.h" +#include "fvwrite.h" +#include "libc_private.h" +#include "local.h" + +/* + * Write the given string to the given file. + */ +int +fputs(s, fp) + const char * __restrict s; + FILE * __restrict fp; +{ + int retval; + struct __suio uio; + struct __siov iov; + + iov.iov_base = (void *)s; + iov.iov_len = uio.uio_resid = strlen(s); + uio.uio_iov = &iov; + uio.uio_iovcnt = 1; + FLOCKFILE(fp); + ORIENT(fp, -1); + retval = __sfvwrite(fp, &uio); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/fputwc.c b/lib/libc/stdio/fputwc.c new file mode 100644 index 0000000..0848b74 --- /dev/null +++ b/lib/libc/stdio/fputwc.c @@ -0,0 +1,87 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" +#include "mblocal.h" + +/* + * Non-MT-safe version. + */ +wint_t +__fputwc(wchar_t wc, FILE *fp) +{ + char buf[MB_LEN_MAX]; + size_t i, len; + + if (MB_CUR_MAX == 1 && wc > 0 && wc <= UCHAR_MAX) { + /* + * Assume single-byte locale with no special encoding. + * A more careful test would be to check + * _CurrentRuneLocale->encoding. + */ + *buf = (unsigned char)wc; + len = 1; + } else { + if ((len = __wcrtomb(buf, wc, &fp->_extra->mbstate)) == + (size_t)-1) { + fp->_flags |= __SERR; + return (WEOF); + } + } + + for (i = 0; i < len; i++) + if (__sputc((unsigned char)buf[i], fp) == EOF) + return (WEOF); + + return ((wint_t)wc); +} + +/* + * MT-safe version. + */ +wint_t +fputwc(wchar_t wc, FILE *fp) +{ + wint_t r; + + FLOCKFILE(fp); + ORIENT(fp, 1); + r = __fputwc(wc, fp); + FUNLOCKFILE(fp); + + return (r); +} diff --git a/lib/libc/stdio/fputws.3 b/lib/libc/stdio/fputws.3 new file mode 100644 index 0000000..52bae96 --- /dev/null +++ b/lib/libc/stdio/fputws.3 @@ -0,0 +1,92 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fputs.3 8.1 (Berkeley) 6/4/93 +.\" FreeBSD: src/lib/libc/stdio/fputs.3,v 1.8 2001/10/01 16:08:59 ru Exp +.\" $FreeBSD$ +.\" +.Dd August 6, 2002 +.Dt FPUTWS 3 +.Os +.Sh NAME +.Nm fputws +.Nd output a line of wide characters to a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft int +.Fn fputws "const wchar_t * restrict ws" "FILE * restrict fp" +.Sh DESCRIPTION +The +.Fn fputws +function writes the wide character string pointed to by +.Fa ws +to the stream pointed to by +.Fa fp . +.Sh RETURN VALUES +The +.Fn fputws +function +returns 0 on success and \-1 on error. +.Sh ERRORS +The +.Fn fputws +function will fail if: +.Bl -tag -width Er +.It Bq Er EBADF +The +.Fa fp +argument supplied +is not a writable stream. +.El +.Pp +The +.Fn fputws +function may also fail and set +.Va errno +for any of the errors specified for the routine +.Xr write 2 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fputs 3 , +.Xr putwc 3 , +.Xr stdio 3 +.Sh STANDARDS +The +.Fn fputws +function conforms to +.St -p1003.1-2001 . diff --git a/lib/libc/stdio/fputws.c b/lib/libc/stdio/fputws.c new file mode 100644 index 0000000..025e1c0 --- /dev/null +++ b/lib/libc/stdio/fputws.c @@ -0,0 +1,71 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "fvwrite.h" +#include "libc_private.h" +#include "local.h" +#include "mblocal.h" + +int +fputws(const wchar_t * __restrict ws, FILE * __restrict fp) +{ + size_t nbytes; + char buf[BUFSIZ]; + struct __suio uio; + struct __siov iov; + + FLOCKFILE(fp); + ORIENT(fp, 1); + if (prepwrite(fp) != 0) + goto error; + uio.uio_iov = &iov; + uio.uio_iovcnt = 1; + iov.iov_base = buf; + do { + nbytes = __wcsnrtombs(buf, &ws, SIZE_T_MAX, sizeof(buf), + &fp->_extra->mbstate); + if (nbytes == (size_t)-1) + goto error; + iov.iov_len = uio.uio_resid = nbytes; + if (__sfvwrite(fp, &uio) != 0) + goto error; + } while (ws != NULL); + FUNLOCKFILE(fp); + return (0); + +error: + FUNLOCKFILE(fp); + return (-1); +} diff --git a/lib/libc/stdio/fread.3 b/lib/libc/stdio/fread.3 new file mode 100644 index 0000000..925ef61 --- /dev/null +++ b/lib/libc/stdio/fread.3 @@ -0,0 +1,109 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fread.3 8.2 (Berkeley) 3/8/94 +.\" $FreeBSD$ +.\" +.Dd March 8, 1994 +.Dt FREAD 3 +.Os +.Sh NAME +.Nm fread , +.Nm fwrite +.Nd binary stream input/output +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft size_t +.Fn fread "void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream" +.Ft size_t +.Fn fwrite "const void * restrict ptr" "size_t size" "size_t nmemb" "FILE * restrict stream" +.Sh DESCRIPTION +The function +.Fn fread +reads +.Fa nmemb +objects, each +.Fa size +bytes long, from the stream pointed to by +.Fa stream , +storing them at the location given by +.Fa ptr . +.Pp +The function +.Fn fwrite +writes +.Fa nmemb +objects, each +.Fa size +bytes long, to the stream pointed to by +.Fa stream , +obtaining them from the location given by +.Fa ptr . +.Sh RETURN VALUES +The functions +.Fn fread +and +.Fn fwrite +advance the file position indicator for the stream +by the number of bytes read or written. +They return the number of objects read or written. +If an error occurs, or the end-of-file is reached, +the return value is a short object count (or zero). +.Pp +The function +.Fn fread +does not distinguish between end-of-file and error, and callers +must use +.Xr feof 3 +and +.Xr ferror 3 +to determine which occurred. +The function +.Fn fwrite +returns a value less than +.Fa nmemb +only if a write error has occurred. +.Sh SEE ALSO +.Xr read 2 , +.Xr write 2 +.Sh STANDARDS +The functions +.Fn fread +and +.Fn fwrite +conform to +.St -isoC . diff --git a/lib/libc/stdio/fread.c b/lib/libc/stdio/fread.c new file mode 100644 index 0000000..3edb84a --- /dev/null +++ b/lib/libc/stdio/fread.c @@ -0,0 +1,100 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fread.c 8.2 (Berkeley) 12/11/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <string.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +/* + * MT-safe version + */ + +size_t +fread(void * __restrict buf, size_t size, size_t count, FILE * __restrict fp) +{ + int ret; + + FLOCKFILE(fp); + ret = __fread(buf, size, count, fp); + FUNLOCKFILE(fp); + return (ret); +} + +size_t +__fread(void * __restrict buf, size_t size, size_t count, FILE * __restrict fp) +{ + size_t resid; + char *p; + int r; + size_t total; + + /* + * The ANSI standard requires a return value of 0 for a count + * or a size of 0. Peculiarily, it imposes no such requirements + * on fwrite; it only requires fread to be broken. + */ + if ((resid = count * size) == 0) + return (0); + ORIENT(fp, -1); + if (fp->_r < 0) + fp->_r = 0; + total = resid; + p = buf; + while (resid > (r = fp->_r)) { + (void)memcpy((void *)p, (void *)fp->_p, (size_t)r); + fp->_p += r; + /* fp->_r = 0 ... done in __srefill */ + p += r; + resid -= r; + if (__srefill(fp)) { + /* no more input: return partial result */ + return ((total - resid) / size); + } + } + (void)memcpy((void *)p, (void *)fp->_p, resid); + fp->_r -= resid; + fp->_p += resid; + return (count); +} diff --git a/lib/libc/stdio/freopen.c b/lib/libc/stdio/freopen.c new file mode 100644 index 0000000..476f3ef --- /dev/null +++ b/lib/libc/stdio/freopen.c @@ -0,0 +1,221 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)freopen.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +/* + * Re-direct an existing, open (probably) file to some other file. + * ANSI is written such that the original file gets closed if at + * all possible, no matter what. + */ +FILE * +freopen(file, mode, fp) + const char * __restrict file; + const char * __restrict mode; + FILE *fp; +{ + int f; + int dflags, flags, isopen, oflags, sverrno, wantfd; + + if ((flags = __sflags(mode, &oflags)) == 0) { + (void) fclose(fp); + return (NULL); + } + + FLOCKFILE(fp); + + if (!__sdidinit) + __sinit(); + + /* + * If the filename is a NULL pointer, the caller is asking us to + * re-open the same file with a different mode. We allow this only + * if the modes are compatible. + */ + if (file == NULL) { + /* See comment below regarding freopen() of closed files. */ + if (fp->_flags == 0) { + FUNLOCKFILE(fp); + errno = EINVAL; + return (NULL); + } + if ((dflags = _fcntl(fp->_file, F_GETFL)) < 0) { + sverrno = errno; + fclose(fp); + FUNLOCKFILE(fp); + errno = sverrno; + return (NULL); + } + if ((dflags & O_ACCMODE) != O_RDWR && (dflags & O_ACCMODE) != + (oflags & O_ACCMODE)) { + fclose(fp); + FUNLOCKFILE(fp); + errno = EINVAL; + return (NULL); + } + if ((oflags ^ dflags) & O_APPEND) { + dflags &= ~O_APPEND; + dflags |= oflags & O_APPEND; + if (_fcntl(fp->_file, F_SETFL, dflags) < 0) { + sverrno = errno; + fclose(fp); + FUNLOCKFILE(fp); + errno = sverrno; + return (NULL); + } + } + if (oflags & O_TRUNC) + ftruncate(fp->_file, 0); + if (_fseeko(fp, 0, oflags & O_APPEND ? SEEK_END : SEEK_SET, + 0) < 0 && errno != ESPIPE) { + sverrno = errno; + fclose(fp); + FUNLOCKFILE(fp); + errno = sverrno; + return (NULL); + } + f = fp->_file; + isopen = 0; + wantfd = -1; + goto finish; + } + + /* + * There are actually programs that depend on being able to "freopen" + * descriptors that weren't originally open. Keep this from breaking. + * Remember whether the stream was open to begin with, and which file + * descriptor (if any) was associated with it. If it was attached to + * a descriptor, defer closing it; freopen("/dev/stdin", "r", stdin) + * should work. This is unnecessary if it was not a Unix file. + */ + if (fp->_flags == 0) { + fp->_flags = __SEOF; /* hold on to it */ + isopen = 0; + wantfd = -1; + } else { + /* flush the stream; ANSI doesn't require this. */ + if (fp->_flags & __SWR) + (void) __sflush(fp); + /* if close is NULL, closing is a no-op, hence pointless */ + isopen = fp->_close != NULL; + if ((wantfd = fp->_file) < 0 && isopen) { + (void) (*fp->_close)(fp->_cookie); + isopen = 0; + } + } + + /* Get a new descriptor to refer to the new file. */ + f = _open(file, oflags, DEFFILEMODE); + if (f < 0 && isopen) { + /* If out of fd's close the old one and try again. */ + if (errno == ENFILE || errno == EMFILE) { + (void) (*fp->_close)(fp->_cookie); + isopen = 0; + f = _open(file, oflags, DEFFILEMODE); + } + } + sverrno = errno; + +finish: + /* + * Finish closing fp. Even if the open succeeded above, we cannot + * keep fp->_base: it may be the wrong size. This loses the effect + * of any setbuffer calls, but stdio has always done this before. + */ + if (isopen) + (void) (*fp->_close)(fp->_cookie); + if (fp->_flags & __SMBF) + free((char *)fp->_bf._base); + fp->_w = 0; + fp->_r = 0; + fp->_p = NULL; + fp->_bf._base = NULL; + fp->_bf._size = 0; + fp->_lbfsize = 0; + if (HASUB(fp)) + FREEUB(fp); + fp->_ub._size = 0; + if (HASLB(fp)) + FREELB(fp); + fp->_lb._size = 0; + fp->_extra->orientation = 0; + memset(&fp->_extra->mbstate, 0, sizeof(mbstate_t)); + + if (f < 0) { /* did not get it after all */ + fp->_flags = 0; /* set it free */ + errno = sverrno; /* restore in case _close clobbered */ + FUNLOCKFILE(fp); + return (NULL); + } + + /* + * If reopening something that was open before on a real file, try + * to maintain the descriptor. Various C library routines (perror) + * assume stderr is always fd STDERR_FILENO, even if being freopen'd. + */ + if (wantfd >= 0 && f != wantfd) { + if (_dup2(f, wantfd) >= 0) { + (void)_close(f); + f = wantfd; + } + } + + fp->_flags = flags; + fp->_file = f; + fp->_cookie = fp; + fp->_read = __sread; + fp->_write = __swrite; + fp->_seek = __sseek; + fp->_close = __sclose; + FUNLOCKFILE(fp); + return (fp); +} diff --git a/lib/libc/stdio/fscanf.c b/lib/libc/stdio/fscanf.c new file mode 100644 index 0000000..bb5ee4c --- /dev/null +++ b/lib/libc/stdio/fscanf.c @@ -0,0 +1,62 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdarg.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +fscanf(FILE * __restrict fp, char const * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + FLOCKFILE(fp); + ret = __svfscanf(fp, fmt, ap); + va_end(ap); + FUNLOCKFILE(fp); + return (ret); +} diff --git a/lib/libc/stdio/fseek.3 b/lib/libc/stdio/fseek.3 new file mode 100644 index 0000000..96abc0a --- /dev/null +++ b/lib/libc/stdio/fseek.3 @@ -0,0 +1,272 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)fseek.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd March 19, 2004 +.Dt FSEEK 3 +.Os +.Sh NAME +.Nm fgetpos , +.Nm fseek , +.Nm fseeko , +.Nm fsetpos , +.Nm ftell , +.Nm ftello , +.Nm rewind +.Nd reposition a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fseek "FILE *stream" "long offset" "int whence" +.Ft long +.Fn ftell "FILE *stream" +.Ft void +.Fn rewind "FILE *stream" +.Ft int +.Fn fgetpos "FILE * restrict stream" "fpos_t * restrict pos" +.Ft int +.Fn fsetpos "FILE *stream" "const fpos_t *pos" +.In sys/types.h +.Ft int +.Fn fseeko "FILE *stream" "off_t offset" "int whence" +.Ft off_t +.Fn ftello "FILE *stream" +.Sh DESCRIPTION +The +.Fn fseek +function sets the file position indicator for the stream pointed +to by +.Fa stream . +The new position, measured in bytes, is obtained by adding +.Fa offset +bytes to the position specified by +.Fa whence . +If +.Fa whence +is set to +.Dv SEEK_SET , +.Dv SEEK_CUR , +or +.Dv SEEK_END , +the offset is relative to the +start of the file, the current position indicator, or end-of-file, +respectively. +A successful call to the +.Fn fseek +function clears the end-of-file indicator for the stream and undoes +any effects of the +.Xr ungetc 3 +and +.Xr ungetwc 3 +functions on the same stream. +.Pp +The +.Fn ftell +function +obtains the current value of the file position indicator for the +stream pointed to by +.Fa stream . +.Pp +The +.Fn rewind +function sets the file position indicator for the stream pointed +to by +.Fa stream +to the beginning of the file. +It is equivalent to: +.Pp +.Dl (void)fseek(stream, 0L, SEEK_SET) +.Pp +except that the error indicator for the stream is also cleared +(see +.Xr clearerr 3 ) . +.Pp +Since +.Fn rewind +does not return a value, +an application wishing to detect errors should clear +.Va errno , +then call +.Fn rewind , +and if +.Va errno +is non-zero, assume an error has occurred. +.Pp +The +.Fn fseeko +function is identical to +.Fn fseek , +except it takes an +.Fa off_t +argument +instead of a +.Fa long . +Likewise, the +.Fn ftello +function is identical to +.Fn ftell , +except it returns an +.Fa off_t . +.Pp +The +.Fn fgetpos +and +.Fn fsetpos +functions +are alternate interfaces for retrieving and setting the current position in +the file, similar to +.Fn ftell +and +.Fn fseek , +except that the current position is stored in an opaque object of +type +.Vt fpos_t +pointed to by +.Fa pos . +These functions provide a portable way to seek to offsets larger than +those that can be represented by a +.Vt long int . +They may also store additional state information in the +.Vt fpos_t +object to facilitate seeking within files containing multibyte +characters with state-dependent encodings. +Although +.Vt fpos_t +has traditionally been an integral type, +applications cannot assume that it is; +in particular, they must not perform arithmetic on objects +of this type. +.Pp +If the stream is a wide character stream (see +.Xr fwide 3 ) , +the position specified by the combination of +.Fa offset +and +.Fa whence +must contain the first byte of a multibyte sequence. +.Sh RETURN VALUES +The +.Fn rewind +function +returns no value. +.Pp +.Rv -std fgetpos fseek fseeko fsetpos +.Pp +Upon successful completion, +.Fn ftell +and +.Fn ftello +return the current offset. +Otherwise, \-1 is returned and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EBADF +The +.Fa stream +argument +is not a seekable stream. +.It Bq Er EINVAL +The +.Fa whence +argument is invalid or +the resulting file-position +indicator would be set to a negative value. +.It Bq Er EOVERFLOW +The resulting file offset would be a value which +cannot be represented correctly in an object of type +.Fa off_t +for +.Fn fseeko +and +.Fn ftello +or +.Fa long +for +.Fn fseek +and +.Fn ftell . +.It Bq Er ESPIPE +The file descriptor underlying stream is associated with a pipe or FIFO +or file-position indicator value is unspecified +(see +.Xr ungetc 3 ) . +.El +.Pp +The functions +.Fn fgetpos , +.Fn fseek , +.Fn fseeko , +.Fn fsetpos , +.Fn ftell , +and +.Fn ftello +may also fail and set +.Va errno +for any of the errors specified for the routines +.Xr fflush 3 , +.Xr fstat 2 , +.Xr lseek 2 , +and +.Xr malloc 3 . +.Sh SEE ALSO +.Xr lseek 2 , +.Xr clearerr 3 , +.Xr fwide 3 , +.Xr ungetc 3 , +.Xr ungetwc 3 +.Sh STANDARDS +The +.Fn fgetpos , +.Fn fsetpos , +.Fn fseek , +.Fn ftell , +and +.Fn rewind +functions +conform to +.St -isoC . +.Pp +The +.Fn fseeko +and +.Fn ftello +functions conform to +.St -p1003.1-2001 . diff --git a/lib/libc/stdio/fseek.c b/lib/libc/stdio/fseek.c new file mode 100644 index 0000000..b346b5d --- /dev/null +++ b/lib/libc/stdio/fseek.c @@ -0,0 +1,314 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fseek.c 8.3 (Berkeley) 1/2/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +#define POS_ERR (-(fpos_t)1) + +int +fseek(fp, offset, whence) + FILE *fp; + long offset; + int whence; +{ + int ret; + int serrno = errno; + + /* make sure stdio is set up */ + if (!__sdidinit) + __sinit(); + + FLOCKFILE(fp); + ret = _fseeko(fp, (off_t)offset, whence, 1); + FUNLOCKFILE(fp); + if (ret == 0) + errno = serrno; + return (ret); +} + +int +fseeko(fp, offset, whence) + FILE *fp; + off_t offset; + int whence; +{ + int ret; + int serrno = errno; + + /* make sure stdio is set up */ + if (!__sdidinit) + __sinit(); + + FLOCKFILE(fp); + ret = _fseeko(fp, offset, whence, 0); + FUNLOCKFILE(fp); + if (ret == 0) + errno = serrno; + return (ret); +} + +/* + * Seek the given file to the given offset. + * `Whence' must be one of the three SEEK_* macros. + */ +int +_fseeko(fp, offset, whence, ltest) + FILE *fp; + off_t offset; + int whence; + int ltest; +{ + fpos_t (*seekfn)(void *, fpos_t, int); + fpos_t target, curoff, ret; + size_t n; + struct stat st; + int havepos; + + /* + * Have to be able to seek. + */ + if ((seekfn = fp->_seek) == NULL) { + errno = ESPIPE; /* historic practice */ + return (-1); + } + + /* + * Change any SEEK_CUR to SEEK_SET, and check `whence' argument. + * After this, whence is either SEEK_SET or SEEK_END. + */ + switch (whence) { + + case SEEK_CUR: + /* + * In order to seek relative to the current stream offset, + * we have to first find the current stream offset via + * ftell (see ftell for details). + */ + if (_ftello(fp, &curoff)) + return (-1); + if (curoff < 0) { + /* Unspecified position because of ungetc() at 0 */ + errno = ESPIPE; + return (-1); + } + if (offset > 0 && curoff > OFF_MAX - offset) { + errno = EOVERFLOW; + return (-1); + } + offset += curoff; + if (offset < 0) { + errno = EINVAL; + return (-1); + } + if (ltest && offset > LONG_MAX) { + errno = EOVERFLOW; + return (-1); + } + whence = SEEK_SET; + havepos = 1; + break; + + case SEEK_SET: + if (offset < 0) { + errno = EINVAL; + return (-1); + } + case SEEK_END: + curoff = 0; /* XXX just to keep gcc quiet */ + havepos = 0; + break; + + default: + errno = EINVAL; + return (-1); + } + + /* + * Can only optimise if: + * reading (and not reading-and-writing); + * not unbuffered; and + * this is a `regular' Unix file (and hence seekfn==__sseek). + * We must check __NBF first, because it is possible to have __NBF + * and __SOPT both set. + */ + if (fp->_bf._base == NULL) + __smakebuf(fp); + if (fp->_flags & (__SWR | __SRW | __SNBF | __SNPT)) + goto dumb; + if ((fp->_flags & __SOPT) == 0) { + if (seekfn != __sseek || + fp->_file < 0 || _fstat(fp->_file, &st) || + (st.st_mode & S_IFMT) != S_IFREG) { + fp->_flags |= __SNPT; + goto dumb; + } + fp->_blksize = st.st_blksize; + fp->_flags |= __SOPT; + } + + /* + * We are reading; we can try to optimise. + * Figure out where we are going and where we are now. + */ + if (whence == SEEK_SET) + target = offset; + else { + if (_fstat(fp->_file, &st)) + goto dumb; + if (offset > 0 && st.st_size > OFF_MAX - offset) { + errno = EOVERFLOW; + return (-1); + } + target = st.st_size + offset; + if ((off_t)target < 0) { + errno = EINVAL; + return (-1); + } + if (ltest && (off_t)target > LONG_MAX) { + errno = EOVERFLOW; + return (-1); + } + } + + if (!havepos && _ftello(fp, &curoff)) + goto dumb; + + /* + * (If the buffer was modified, we have to + * skip this; see fgetln.c.) + */ + if (fp->_flags & __SMOD) + goto abspos; + + /* + * Compute the number of bytes in the input buffer (pretending + * that any ungetc() input has been discarded). Adjust current + * offset backwards by this count so that it represents the + * file offset for the first byte in the current input buffer. + */ + if (HASUB(fp)) { + curoff += fp->_r; /* kill off ungetc */ + n = fp->_extra->_up - fp->_bf._base; + curoff -= n; + n += fp->_ur; + } else { + n = fp->_p - fp->_bf._base; + curoff -= n; + n += fp->_r; + } + + /* + * If the target offset is within the current buffer, + * simply adjust the pointers, clear EOF, undo ungetc(), + * and return. + */ + if (target >= curoff && target < curoff + n) { + size_t o = target - curoff; + + fp->_p = fp->_bf._base + o; + fp->_r = n - o; + if (HASUB(fp)) + FREEUB(fp); + fp->_flags &= ~__SEOF; + memset(&fp->_extra->mbstate, 0, sizeof(mbstate_t)); + return (0); + } + +abspos: + /* + * The place we want to get to is not within the current buffer, + * but we can still be kind to the kernel copyout mechanism. + * By aligning the file offset to a block boundary, we can let + * the kernel use the VM hardware to map pages instead of + * copying bytes laboriously. Using a block boundary also + * ensures that we only read one block, rather than two. + */ + curoff = target & ~(fp->_blksize - 1); + if (_sseek(fp, curoff, SEEK_SET) == POS_ERR) + goto dumb; + fp->_r = 0; + fp->_p = fp->_bf._base; + if (HASUB(fp)) + FREEUB(fp); + n = target - curoff; + if (n) { + if (__srefill(fp) || fp->_r < n) + goto dumb; + fp->_p += n; + fp->_r -= n; + } + fp->_flags &= ~__SEOF; + return (0); + + /* + * We get here if we cannot optimise the seek ... just + * do it. Allow the seek function to change fp->_bf._base. + */ +dumb: + if (__sflush(fp) || + (ret = _sseek(fp, (fpos_t)offset, whence)) == POS_ERR) + return (-1); + /* success: clear EOF indicator and discard ungetc() data */ + if (HASUB(fp)) + FREEUB(fp); + fp->_p = fp->_bf._base; + fp->_r = 0; + /* fp->_w = 0; */ /* unnecessary (I think...) */ + fp->_flags &= ~__SEOF; + memset(&fp->_extra->mbstate, 0, sizeof(mbstate_t)); + if (ltest && ret > LONG_MAX) { + fp->_flags |= __SERR; + errno = EOVERFLOW; + return (-1); + } + return (0); +} diff --git a/lib/libc/stdio/fsetpos.c b/lib/libc/stdio/fsetpos.c new file mode 100644 index 0000000..6eeffda --- /dev/null +++ b/lib/libc/stdio/fsetpos.c @@ -0,0 +1,55 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fsetpos.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <stdio.h> + +/* + * fsetpos: like fseek. + */ +int +fsetpos(iop, pos) + FILE *iop; + const fpos_t *pos; +{ + return (fseeko(iop, (off_t)*pos, SEEK_SET)); +} diff --git a/lib/libc/stdio/ftell.c b/lib/libc/stdio/ftell.c new file mode 100644 index 0000000..94e962c --- /dev/null +++ b/lib/libc/stdio/ftell.c @@ -0,0 +1,143 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ftell.c 8.2 (Berkeley) 5/4/95"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +/* + * standard ftell function. + */ +long +ftell(fp) + FILE *fp; +{ + off_t rv; + + rv = ftello(fp); + if (rv > LONG_MAX) { + errno = EOVERFLOW; + return (-1); + } + return (rv); +} + +/* + * ftello: return current offset. + */ +off_t +ftello(fp) + FILE *fp; +{ + fpos_t rv; + int ret; + + FLOCKFILE(fp); + ret = _ftello(fp, &rv); + FUNLOCKFILE(fp); + if (ret) + return (-1); + if (rv < 0) { /* Unspecified value because of ungetc() at 0 */ + errno = ESPIPE; + return (-1); + } + return (rv); +} + +int +_ftello(fp, offset) + FILE *fp; + fpos_t *offset; +{ + fpos_t pos; + size_t n; + + if (fp->_seek == NULL) { + errno = ESPIPE; /* historic practice */ + return (1); + } + + /* + * Find offset of underlying I/O object, then + * adjust for buffered bytes. + */ + if (fp->_flags & __SOFF) + pos = fp->_offset; + else { + pos = _sseek(fp, (fpos_t)0, SEEK_CUR); + if (pos == -1) + return (1); + } + if (fp->_flags & __SRD) { + /* + * Reading. Any unread characters (including + * those from ungetc) cause the position to be + * smaller than that in the underlying object. + */ + if ((pos -= (HASUB(fp) ? fp->_ur : fp->_r)) < 0) { + fp->_flags |= __SERR; + errno = EIO; + return (1); + } + if (HASUB(fp)) + pos -= fp->_r; /* Can be negative at this point. */ + } else if ((fp->_flags & __SWR) && fp->_p != NULL) { + /* + * Writing. Any buffered characters cause the + * position to be greater than that in the + * underlying object. + */ + n = fp->_p - fp->_bf._base; + if (pos > OFF_MAX - n) { + errno = EOVERFLOW; + return (1); + } + pos += n; + } + *offset = pos; + return (0); +} diff --git a/lib/libc/stdio/funopen.3 b/lib/libc/stdio/funopen.3 new file mode 100644 index 0000000..80ce999 --- /dev/null +++ b/lib/libc/stdio/funopen.3 @@ -0,0 +1,180 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek. +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)funopen.3 8.1 (Berkeley) 6/9/93 +.\" $FreeBSD$ +.\" +.Dd March 19, 2004 +.Dt FUNOPEN 3 +.Os +.Sh NAME +.Nm funopen , +.Nm fropen , +.Nm fwopen +.Nd open a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft FILE * +.Fn funopen "const void *cookie" "int (*readfn)(void *, char *, int)" "int (*writefn)(void *, const char *, int)" "fpos_t (*seekfn)(void *, fpos_t, int)" "int (*closefn)(void *)" +.Ft FILE * +.Fn fropen "void *cookie" "int (*readfn)(void *, char *, int)" +.Ft FILE * +.Fn fwopen "void *cookie" "int (*writefn)(void *, const char *, int)" +.Sh DESCRIPTION +The +.Fn funopen +function +associates a stream with up to four +.Dq Tn I/O No functions . +Either +.Fa readfn +or +.Fa writefn +must be specified; +the others can be given as an appropriately-typed +.Dv NULL +pointer. +These +.Tn I/O +functions will be used to read, write, seek and +close the new stream. +.Pp +In general, omitting a function means that any attempt to perform the +associated operation on the resulting stream will fail. +If the close function is omitted, closing the stream will flush +any buffered output and then succeed. +.Pp +The calling conventions of +.Fa readfn , +.Fa writefn , +.Fa seekfn +and +.Fa closefn +must match those, respectively, of +.Xr read 2 , +.Xr write 2 , +.Xr lseek 2 , +and +.Xr close 2 +with the single exception that they are passed the +.Fa cookie +argument specified to +.Fn funopen +in place of the traditional file descriptor argument. +.Pp +Read and write +.Tn I/O +functions are allowed to change the underlying buffer +on fully buffered or line buffered streams by calling +.Xr setvbuf 3 . +They are also not required to completely fill or empty the buffer. +They are not, however, allowed to change streams from unbuffered to buffered +or to change the state of the line buffering flag. +They must also be prepared to have read or write calls occur on buffers other +than the one most recently specified. +.Pp +All user +.Tn I/O +functions can report an error by returning \-1. +Additionally, all of the functions should set the external variable +.Va errno +appropriately if an error occurs. +.Pp +An error on +.Fn closefn +does not keep the stream open. +.Pp +As a convenience, the include file +.In stdio.h +defines the macros +.Fn fropen +and +.Fn fwopen +as calls to +.Fn funopen +with only a read or write function specified. +.Sh RETURN VALUES +Upon successful completion, +.Fn funopen +returns a +.Dv FILE +pointer. +Otherwise, +.Dv NULL +is returned and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EINVAL +The +.Fn funopen +function +was called without either a read or write function. +The +.Fn funopen +function +may also fail and set +.Va errno +for any of the errors +specified for the routine +.Xr malloc 3 . +.El +.Sh SEE ALSO +.Xr fcntl 2 , +.Xr open 2 , +.Xr fclose 3 , +.Xr fopen 3 , +.Xr fseek 3 , +.Xr setbuf 3 +.Sh HISTORY +The +.Fn funopen +functions first appeared in +.Bx 4.4 . +.Sh BUGS +The +.Fn funopen +function +may not be portable to systems other than +.Bx . +.Pp +The +.Fn funopen +interface erroneously assumes that +.Vt fpos_t +is an integral type; see +.Xr fseek 3 +for a discussion of this issue. diff --git a/lib/libc/stdio/funopen.c b/lib/libc/stdio/funopen.c new file mode 100644 index 0000000..459cd5c --- /dev/null +++ b/lib/libc/stdio/funopen.c @@ -0,0 +1,80 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)funopen.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <errno.h> + +#include "local.h" + +FILE * +funopen(cookie, readfn, writefn, seekfn, closefn) + const void *cookie; + int (*readfn)(), (*writefn)(); + fpos_t (*seekfn)(void *cookie, fpos_t off, int whence); + int (*closefn)(); +{ + FILE *fp; + int flags; + + if (readfn == NULL) { + if (writefn == NULL) { /* illegal */ + errno = EINVAL; + return (NULL); + } else + flags = __SWR; /* write only */ + } else { + if (writefn == NULL) + flags = __SRD; /* read only */ + else + flags = __SRW; /* read-write */ + } + if ((fp = __sfp()) == NULL) + return (NULL); + fp->_flags = flags; + fp->_file = -1; + fp->_cookie = (void *)cookie; + fp->_read = readfn; + fp->_write = writefn; + fp->_seek = seekfn; + fp->_close = closefn; + return (fp); +} diff --git a/lib/libc/stdio/fvwrite.c b/lib/libc/stdio/fvwrite.c new file mode 100644 index 0000000..9cc4c55 --- /dev/null +++ b/lib/libc/stdio/fvwrite.c @@ -0,0 +1,211 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fvwrite.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "local.h" +#include "fvwrite.h" + +/* + * Write some memory regions. Return zero on success, EOF on error. + * + * This routine is large and unsightly, but most of the ugliness due + * to the three different kinds of output buffering is handled here. + */ +int +__sfvwrite(fp, uio) + FILE *fp; + struct __suio *uio; +{ + size_t len; + char *p; + struct __siov *iov; + int w, s; + char *nl; + int nlknown, nldist; + + if ((len = uio->uio_resid) == 0) + return (0); + /* make sure we can write */ + if (prepwrite(fp) != 0) + return (EOF); + +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#define COPY(n) (void)memcpy((void *)fp->_p, (void *)p, (size_t)(n)) + + iov = uio->uio_iov; + p = iov->iov_base; + len = iov->iov_len; + iov++; +#define GETIOV(extra_work) \ + while (len == 0) { \ + extra_work; \ + p = iov->iov_base; \ + len = iov->iov_len; \ + iov++; \ + } + if (fp->_flags & __SNBF) { + /* + * Unbuffered: write up to BUFSIZ bytes at a time. + */ + do { + GETIOV(;); + w = _swrite(fp, p, MIN(len, BUFSIZ)); + if (w <= 0) + goto err; + p += w; + len -= w; + } while ((uio->uio_resid -= w) != 0); + } else if ((fp->_flags & __SLBF) == 0) { + /* + * Fully buffered: fill partially full buffer, if any, + * and then flush. If there is no partial buffer, write + * one _bf._size byte chunk directly (without copying). + * + * String output is a special case: write as many bytes + * as fit, but pretend we wrote everything. This makes + * snprintf() return the number of bytes needed, rather + * than the number used, and avoids its write function + * (so that the write function can be invalid). + */ + do { + GETIOV(;); + if ((fp->_flags & (__SALC | __SSTR)) == + (__SALC | __SSTR) && fp->_w < len) { + size_t blen = fp->_p - fp->_bf._base; + + /* + * Alloc an extra 128 bytes (+ 1 for NULL) + * so we don't call realloc(3) so often. + */ + fp->_w = len + 128; + fp->_bf._size = blen + len + 128; + fp->_bf._base = + reallocf(fp->_bf._base, fp->_bf._size + 1); + if (fp->_bf._base == NULL) + goto err; + fp->_p = fp->_bf._base + blen; + } + w = fp->_w; + if (fp->_flags & __SSTR) { + if (len < w) + w = len; + if (w > 0) { + COPY(w); /* copy MIN(fp->_w,len), */ + fp->_w -= w; + fp->_p += w; + } + w = len; /* but pretend copied all */ + } else if (fp->_p > fp->_bf._base && len > w) { + /* fill and flush */ + COPY(w); + /* fp->_w -= w; */ /* unneeded */ + fp->_p += w; + if (__fflush(fp)) + goto err; + } else if (len >= (w = fp->_bf._size)) { + /* write directly */ + w = _swrite(fp, p, w); + if (w <= 0) + goto err; + } else { + /* fill and done */ + w = len; + COPY(w); + fp->_w -= w; + fp->_p += w; + } + p += w; + len -= w; + } while ((uio->uio_resid -= w) != 0); + } else { + /* + * Line buffered: like fully buffered, but we + * must check for newlines. Compute the distance + * to the first newline (including the newline), + * or `infinity' if there is none, then pretend + * that the amount to write is MIN(len,nldist). + */ + nlknown = 0; + nldist = 0; /* XXX just to keep gcc happy */ + do { + GETIOV(nlknown = 0); + if (!nlknown) { + nl = memchr((void *)p, '\n', len); + nldist = nl ? nl + 1 - p : len + 1; + nlknown = 1; + } + s = MIN(len, nldist); + w = fp->_w + fp->_bf._size; + if (fp->_p > fp->_bf._base && s > w) { + COPY(w); + /* fp->_w -= w; */ + fp->_p += w; + if (__fflush(fp)) + goto err; + } else if (s >= (w = fp->_bf._size)) { + w = _swrite(fp, p, w); + if (w <= 0) + goto err; + } else { + w = s; + COPY(w); + fp->_w -= w; + fp->_p += w; + } + if ((nldist -= w) == 0) { + /* copied the newline: flush and forget */ + if (__fflush(fp)) + goto err; + nlknown = 0; + } + p += w; + len -= w; + } while ((uio->uio_resid -= w) != 0); + } + return (0); + +err: + fp->_flags |= __SERR; + return (EOF); +} diff --git a/lib/libc/stdio/fvwrite.h b/lib/libc/stdio/fvwrite.h new file mode 100644 index 0000000..df59bf0 --- /dev/null +++ b/lib/libc/stdio/fvwrite.h @@ -0,0 +1,53 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)fvwrite.h 8.1 (Berkeley) 6/4/93 + * $FreeBSD$ + */ + +/* + * I/O descriptors for __sfvwrite(). + */ +struct __siov { + void *iov_base; + size_t iov_len; +}; +struct __suio { + struct __siov *uio_iov; + int uio_iovcnt; + int uio_resid; +}; + +extern int __sfvwrite(FILE *, struct __suio *); diff --git a/lib/libc/stdio/fwalk.c b/lib/libc/stdio/fwalk.c new file mode 100644 index 0000000..811fb54 --- /dev/null +++ b/lib/libc/stdio/fwalk.c @@ -0,0 +1,71 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fwalk.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <machine/atomic.h> +#include <stdio.h> +#include "local.h" +#include "glue.h" + +int +_fwalk(function) + int (*function)(FILE *); +{ + FILE *fp; + int n, ret; + struct glue *g; + + ret = 0; + /* + * It should be safe to walk the list without locking it; + * new nodes are only added to the end and none are ever + * removed. + * + * Avoid locking this list while walking it or else you will + * introduce a potential deadlock in [at least] refill.c. + */ + for (g = &__sglue; g != NULL; g = g->next) + for (fp = g->iobs, n = g->niobs; --n >= 0; fp++) + if ((fp->_flags != 0) && ((fp->_flags & __SIGN) == 0)) + ret |= (*function)(fp); + return (ret); +} diff --git a/lib/libc/stdio/fwide.3 b/lib/libc/stdio/fwide.3 new file mode 100644 index 0000000..6ff8d92 --- /dev/null +++ b/lib/libc/stdio/fwide.3 @@ -0,0 +1,97 @@ +.\" $NetBSD: fwide.3,v 1.3 2002/02/07 07:00:25 ross Exp $ +.\" +.\" Copyright (c)2001 Citrus Project, +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $Citrus: xpg4dl/FreeBSD/lib/libc/stdio/fwide.3,v 1.2 2001/12/07 04:47:08 yamt Exp $ +.\" $FreeBSD$ +.\" +.Dd October 24, 2001 +.Dt FWIDE 3 +.Os +.Sh NAME +.Nm fwide +.Nd get/set orientation of a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft int +.Fn fwide "FILE *stream" "int mode" +.Sh DESCRIPTION +The +.Fn fwide +function +determines the orientation of the stream pointed at by +.Fa stream . +.Pp +If the orientation of +.Fa stream +has already been determined, +.Fn fwide +leaves it unchanged. +Otherwise, +.Fn fwide +sets the orientation of +.Fa stream +according to +.Fa mode . +.Pp +If +.Fa mode +is less than zero, +.Fa stream +is set to byte-oriented. +If it is greater than zero, +.Fa stream +is set to wide-oriented. +Otherwise, +.Fa mode +is zero, and +.Fa stream +is unchanged. +.Sh RETURN VALUES +The +.Fn fwide +function +returns a value according to orientation after the call of +.Fn fwide ; +a value less than zero if byte-oriented, a value greater than zero +if wide-oriented, and zero if the stream has no orientation. +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fgetc 3 , +.Xr fgetwc 3 , +.Xr fopen 3 , +.Xr fputc 3 , +.Xr fputwc 3 , +.Xr freopen 3 , +.Xr stdio 3 +.Sh STANDARDS +The +.Fn fwide +function +conforms to +.St -isoC-99 . diff --git a/lib/libc/stdio/fwide.c b/lib/libc/stdio/fwide.c new file mode 100644 index 0000000..70309f5 --- /dev/null +++ b/lib/libc/stdio/fwide.c @@ -0,0 +1,51 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +fwide(FILE *fp, int mode) +{ + int m; + + FLOCKFILE(fp); + /* Only change the orientation if the stream is not oriented yet. */ + if (mode != 0 && fp->_extra->orientation == 0) + fp->_extra->orientation = mode > 0 ? 1 : -1; + m = fp->_extra->orientation; + FUNLOCKFILE(fp); + + return (m); +} diff --git a/lib/libc/stdio/fwprintf.c b/lib/libc/stdio/fwprintf.c new file mode 100644 index 0000000..a22edae --- /dev/null +++ b/lib/libc/stdio/fwprintf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +fwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + ret = vfwprintf(fp, fmt, ap); + va_end(ap); + + return (ret); +} diff --git a/lib/libc/stdio/fwrite.c b/lib/libc/stdio/fwrite.c new file mode 100644 index 0000000..0a74d81 --- /dev/null +++ b/lib/libc/stdio/fwrite.c @@ -0,0 +1,80 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fwrite.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "fvwrite.h" +#include "libc_private.h" + +/* + * Write `count' objects (each size `size') from memory to the given file. + * Return the number of whole objects written. + */ +size_t +fwrite(buf, size, count, fp) + const void * __restrict buf; + size_t size, count; + FILE * __restrict fp; +{ + size_t n; + struct __suio uio; + struct __siov iov; + + iov.iov_base = (void *)buf; + uio.uio_resid = iov.iov_len = n = count * size; + uio.uio_iov = &iov; + uio.uio_iovcnt = 1; + + FLOCKFILE(fp); + ORIENT(fp, -1); + /* + * The usual case is success (__sfvwrite returns 0); + * skip the divide if this happens, since divides are + * generally slow and since this occurs whenever size==0. + */ + if (__sfvwrite(fp, &uio) != 0) + count = (n - uio.uio_resid) / size; + FUNLOCKFILE(fp); + return (count); +} diff --git a/lib/libc/stdio/fwscanf.c b/lib/libc/stdio/fwscanf.c new file mode 100644 index 0000000..f779c53 --- /dev/null +++ b/lib/libc/stdio/fwscanf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +fwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, ...) +{ + va_list ap; + int r; + + va_start(ap, fmt); + r = vfwscanf(fp, fmt, ap); + va_end(ap); + + return (r); +} diff --git a/lib/libc/stdio/getc.3 b/lib/libc/stdio/getc.3 new file mode 100644 index 0000000..25c9be4 --- /dev/null +++ b/lib/libc/stdio/getc.3 @@ -0,0 +1,174 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)getc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd January 10, 2003 +.Dt GETC 3 +.Os +.Sh NAME +.Nm fgetc , +.Nm getc , +.Nm getc_unlocked , +.Nm getchar , +.Nm getchar_unlocked , +.Nm getw +.Nd get next character or word from input stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fgetc "FILE *stream" +.Ft int +.Fn getc "FILE *stream" +.Ft int +.Fn getc_unlocked "FILE *stream" +.Ft int +.Fn getchar void +.Ft int +.Fn getchar_unlocked "void" +.Ft int +.Fn getw "FILE *stream" +.Sh DESCRIPTION +The +.Fn fgetc +function +obtains the next input character (if present) from the stream pointed at by +.Fa stream , +or the next character pushed back on the stream via +.Xr ungetc 3 . +.Pp +The +.Fn getc +function +acts essentially identically to +.Fn fgetc , +but is a macro that expands in-line. +.Pp +The +.Fn getchar +function +is equivalent to +.Fn getc stdin . +.Pp +The +.Fn getw +function +obtains the next +.Vt int +(if present) +from the stream pointed at by +.Fa stream . +.Pp +The +.Fn getc_unlocked +and +.Fn getchar_unlocked +functions are equivalent to +.Fn getc +and +.Fn getchar +respectively, +except that the caller is responsible for locking the stream +with +.Xr flockfile 3 +before calling them. +These functions may be used to avoid the overhead of locking the stream +for each character, and to avoid input being dispersed among multiple +threads reading from the same stream. +.Sh RETURN VALUES +If successful, these routines return the next requested object +from the +.Fa stream . +Character values are returned as an +.Vt "unsigned char" +converted to an +.Vt int . +If the stream is at end-of-file or a read error occurs, +the routines return +.Dv EOF . +The routines +.Xr feof 3 +and +.Xr ferror 3 +must be used to distinguish between end-of-file and error. +If an error occurs, the global variable +.Va errno +is set to indicate the error. +The end-of-file condition is remembered, even on a terminal, and all +subsequent attempts to read will return +.Dv EOF +until the condition is cleared with +.Xr clearerr 3 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr flockfile 3 , +.Xr fopen 3 , +.Xr fread 3 , +.Xr getwc 3 , +.Xr putc 3 , +.Xr ungetc 3 +.Sh STANDARDS +The +.Fn fgetc , +.Fn getc +and +.Fn getchar +functions +conform to +.St -isoC . +The +.Fn getc_unlocked +and +.Fn getchar_unlocked +functions conform to +.St -p1003.1-2001 . +.Sh BUGS +Since +.Dv EOF +is a valid integer value, +.Xr feof 3 +and +.Xr ferror 3 +must be used to check for failure after calling +.Fn getw . +The size and byte order of an +.Vt int +varies from one machine to another, and +.Fn getw +is not recommended for portable applications. +.Pp diff --git a/lib/libc/stdio/getc.c b/lib/libc/stdio/getc.c new file mode 100644 index 0000000..61b2c54 --- /dev/null +++ b/lib/libc/stdio/getc.c @@ -0,0 +1,61 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getc.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +#undef getc + +int +getc(FILE *fp) +{ + int retval; + FLOCKFILE(fp); + /* Orientation set by __sgetc() when buffer is empty. */ + /* ORIENT(fp, -1); */ + retval = __sgetc(fp); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/getchar.c b/lib/libc/stdio/getchar.c new file mode 100644 index 0000000..baf5876 --- /dev/null +++ b/lib/libc/stdio/getchar.c @@ -0,0 +1,64 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getchar.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * A subroutine version of the macro getchar. + */ +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +#undef getchar + +int +getchar() +{ + int retval; + FLOCKFILE(stdin); + /* Orientation set by __sgetc() when buffer is empty. */ + /* ORIENT(stdin, -1); */ + retval = __sgetc(stdin); + FUNLOCKFILE(stdin); + return (retval); +} diff --git a/lib/libc/stdio/gets.c b/lib/libc/stdio/gets.c new file mode 100644 index 0000000..e247271 --- /dev/null +++ b/lib/libc/stdio/gets.c @@ -0,0 +1,81 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)gets.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <unistd.h> +#include <stdio.h> +#include <sys/cdefs.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +__warn_references(gets, "warning: this program uses gets(), which is unsafe."); + +char * +gets(buf) + char *buf; +{ + int c; + char *s; + static int warned; + static char w[] = + "warning: this program uses gets(), which is unsafe.\n"; + + FLOCKFILE(stdin); + ORIENT(stdin, -1); + if (!warned) { + (void) _write(STDERR_FILENO, w, sizeof(w) - 1); + warned = 1; + } + for (s = buf; (c = __sgetc(stdin)) != '\n';) + if (c == EOF) + if (s == buf) { + FUNLOCKFILE(stdin); + return (NULL); + } else + break; + else + *s++ = c; + *s = 0; + FUNLOCKFILE(stdin); + return (buf); +} diff --git a/lib/libc/stdio/getw.c b/lib/libc/stdio/getw.c new file mode 100644 index 0000000..e748235 --- /dev/null +++ b/lib/libc/stdio/getw.c @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getw.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +int +getw(fp) + FILE *fp; +{ + int x; + + return (fread((void *)&x, sizeof(x), 1, fp) == 1 ? x : EOF); +} diff --git a/lib/libc/stdio/getwc.3 b/lib/libc/stdio/getwc.3 new file mode 100644 index 0000000..4939ad1 --- /dev/null +++ b/lib/libc/stdio/getwc.3 @@ -0,0 +1,118 @@ +.\" $NetBSD: getwc.3,v 1.3 2002/02/07 07:00:26 ross Exp $ +.\" +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)getc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd March 3, 2004 +.Dt GETWC 3 +.Os +.Sh NAME +.Nm fgetwc , +.Nm getwc , +.Nm getwchar +.Nd get next wide character from input stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft wint_t +.Fn fgetwc "FILE *stream" +.Ft wint_t +.Fn getwc "FILE *stream" +.Ft wint_t +.Fn getwchar void +.Sh DESCRIPTION +The +.Fn fgetwc +function +obtains the next input wide character (if present) from the stream pointed at by +.Fa stream , +or the next character pushed back on the stream via +.Xr ungetwc 3 . +.Pp +The +.Fn getwc +function +acts essentially identically to +.Fn fgetwc . +.Pp +The +.Fn getwchar +function +is equivalent to +.Fn getwc +with the argument +.Dv stdin . +.Sh RETURN VALUES +If successful, these routines return the next wide character +from the +.Fa stream . +If the stream is at end-of-file or a read error occurs, +the routines return +.Dv WEOF . +The routines +.Xr feof 3 +and +.Xr ferror 3 +must be used to distinguish between end-of-file and error. +If an error occurs, the global variable +.Va errno +is set to indicate the error. +The end-of-file condition is remembered, even on a terminal, and all +subsequent attempts to read will return +.Dv WEOF +until the condition is cleared with +.Xr clearerr 3 . +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fopen 3 , +.Xr fread 3 , +.Xr getc 3 , +.Xr putwc 3 , +.Xr stdio 3 , +.Xr ungetwc 3 +.Sh STANDARDS +The +.Fn fgetwc , +.Fn getwc +and +.Fn getwchar +functions +conform to +.St -isoC-99 . diff --git a/lib/libc/stdio/getwc.c b/lib/libc/stdio/getwc.c new file mode 100644 index 0000000..ba5ab60 --- /dev/null +++ b/lib/libc/stdio/getwc.c @@ -0,0 +1,48 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +#undef getwc + +/* + * Synonym for fgetwc(). The only difference is that getwc(), if it is a + * macro, may evaluate `fp' more than once. + */ +wint_t +getwc(FILE *fp) +{ + + return (fgetwc(fp)); +} diff --git a/lib/libc/stdio/getwchar.c b/lib/libc/stdio/getwchar.c new file mode 100644 index 0000000..79dd7bc --- /dev/null +++ b/lib/libc/stdio/getwchar.c @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +#undef getwchar + +/* + * Synonym for fgetwc(stdin). + */ +wint_t +getwchar(void) +{ + + return (fgetwc(stdin)); +} diff --git a/lib/libc/stdio/glue.h b/lib/libc/stdio/glue.h new file mode 100644 index 0000000..a6df6fd --- /dev/null +++ b/lib/libc/stdio/glue.h @@ -0,0 +1,49 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)glue.h 8.1 (Berkeley) 6/4/93 + * $FreeBSD$ + */ + +/* + * The first few FILEs are statically allocated; others are dynamically + * allocated and linked in via this glue structure. + */ +struct glue { + struct glue *next; + int niobs; + FILE *iobs; +}; +extern struct glue __sglue; diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h new file mode 100644 index 0000000..7d5f79a --- /dev/null +++ b/lib/libc/stdio/local.h @@ -0,0 +1,142 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)local.h 8.3 (Berkeley) 7/3/94 + * $FreeBSD$ + */ + +#include <sys/types.h> /* for off_t */ +#include <pthread.h> +#include <string.h> +#include <wchar.h> + +/* + * Information local to this implementation of stdio, + * in particular, macros and private variables. + */ + +extern int _sread(FILE *, char *, int); +extern int _swrite(FILE *, char const *, int); +extern fpos_t _sseek(FILE *, fpos_t, int); +extern int _ftello(FILE *, fpos_t *); +extern int _fseeko(FILE *, off_t, int, int); +extern int __fflush(FILE *fp); +extern void __fcloseall(void); +extern wint_t __fgetwc(FILE *); +extern wint_t __fputwc(wchar_t, FILE *); +extern int __sflush(FILE *); +extern FILE *__sfp(void); +extern int __slbexpand(FILE *, size_t); +extern int __srefill(FILE *); +extern int __sread(void *, char *, int); +extern int __swrite(void *, char const *, int); +extern fpos_t __sseek(void *, fpos_t, int); +extern int __sclose(void *); +extern void __sinit(void); +extern void _cleanup(void); +extern void __smakebuf(FILE *); +extern int __swhatbuf(FILE *, size_t *, int *); +extern int _fwalk(int (*)(FILE *)); +extern int __svfscanf(FILE *, const char *, __va_list); +extern int __swsetup(FILE *); +extern int __sflags(const char *, int *); +extern int __ungetc(int, FILE *); +extern wint_t __ungetwc(wint_t, FILE *); +extern int __vfprintf(FILE *, const char *, __va_list); +extern int __vfscanf(FILE *, const char *, __va_list); +extern int __vfwprintf(FILE *, const wchar_t *, __va_list); +extern int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, + __va_list); +extern size_t __fread(void * __restrict buf, size_t size, size_t count, + FILE * __restrict fp); +extern int __sdidinit; + + +/* hold a buncha junk that would grow the ABI */ +struct __sFILEX { + unsigned char *_up; /* saved _p when _p is doing ungetc data */ + pthread_mutex_t fl_mutex; /* used for MT-safety */ + pthread_t fl_owner; /* current owner */ + int fl_count; /* recursive lock count */ + int orientation; /* orientation for fwide() */ + mbstate_t mbstate; /* multibyte conversion state */ +}; + +/* + * Prepare the given FILE for writing, and return 0 iff it + * can be written now. Otherwise, return EOF and set errno. + */ +#define prepwrite(fp) \ + ((((fp)->_flags & __SWR) == 0 || \ + ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ + __swsetup(fp)) + +/* + * Test whether the given stdio file has an active ungetc buffer; + * release such a buffer, without restoring ordinary unread data. + */ +#define HASUB(fp) ((fp)->_ub._base != NULL) +#define FREEUB(fp) { \ + if ((fp)->_ub._base != (fp)->_ubuf) \ + free((char *)(fp)->_ub._base); \ + (fp)->_ub._base = NULL; \ +} + +/* + * test for an fgetln() buffer. + */ +#define HASLB(fp) ((fp)->_lb._base != NULL) +#define FREELB(fp) { \ + free((char *)(fp)->_lb._base); \ + (fp)->_lb._base = NULL; \ +} + +#define INITEXTRA(fp) { \ + (fp)->_extra->_up = NULL; \ + (fp)->_extra->fl_mutex = PTHREAD_MUTEX_INITIALIZER; \ + (fp)->_extra->fl_owner = NULL; \ + (fp)->_extra->fl_count = 0; \ + (fp)->_extra->orientation = 0; \ + memset(&(fp)->_extra->mbstate, 0, sizeof(mbstate_t)); \ +} + +/* + * Set the orientation for a stream. If o > 0, the stream has wide- + * orientation. If o < 0, the stream has byte-orientation. + */ +#define ORIENT(fp, o) do { \ + if ((fp)->_extra->orientation == 0) \ + (fp)->_extra->orientation = (o); \ +} while (0) diff --git a/lib/libc/stdio/makebuf.c b/lib/libc/stdio/makebuf.c new file mode 100644 index 0000000..bdade67 --- /dev/null +++ b/lib/libc/stdio/makebuf.c @@ -0,0 +1,124 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)makebuf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" + +#include "libc_private.h" +#include "local.h" + +/* + * Allocate a file buffer, or switch to unbuffered I/O. + * Per the ANSI C standard, ALL tty devices default to line buffered. + * + * As a side effect, we set __SOPT or __SNPT (en/dis-able fseek + * optimisation) right after the _fstat() that finds the buffer size. + */ +void +__smakebuf(fp) + FILE *fp; +{ + void *p; + int flags; + size_t size; + int couldbetty; + + if (fp->_flags & __SNBF) { + fp->_bf._base = fp->_p = fp->_nbuf; + fp->_bf._size = 1; + return; + } + flags = __swhatbuf(fp, &size, &couldbetty); + if ((p = malloc(size)) == NULL) { + fp->_flags |= __SNBF; + fp->_bf._base = fp->_p = fp->_nbuf; + fp->_bf._size = 1; + return; + } + __cleanup = _cleanup; + flags |= __SMBF; + fp->_bf._base = fp->_p = p; + fp->_bf._size = size; + if (couldbetty && isatty(fp->_file)) + flags |= __SLBF; + fp->_flags |= flags; +} + +/* + * Internal routine to determine `proper' buffering for a file. + */ +int +__swhatbuf(fp, bufsize, couldbetty) + FILE *fp; + size_t *bufsize; + int *couldbetty; +{ + struct stat st; + + if (fp->_file < 0 || _fstat(fp->_file, &st) < 0) { + *couldbetty = 0; + *bufsize = BUFSIZ; + return (__SNPT); + } + + /* could be a tty iff it is a character device */ + *couldbetty = (st.st_mode & S_IFMT) == S_IFCHR; + if (st.st_blksize <= 0) { + *bufsize = BUFSIZ; + return (__SNPT); + } + + /* + * Optimise fseek() only if it is a regular file. (The test for + * __sseek is mainly paranoia.) It is safe to set _blksize + * unconditionally; it will only be used if __SOPT is also set. + */ + *bufsize = st.st_blksize; + fp->_blksize = st.st_blksize; + return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ? + __SOPT : __SNPT); +} diff --git a/lib/libc/stdio/mktemp.3 b/lib/libc/stdio/mktemp.3 new file mode 100644 index 0000000..43cef21 --- /dev/null +++ b/lib/libc/stdio/mktemp.3 @@ -0,0 +1,255 @@ +.\" Copyright (c) 1989, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)mktemp.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd February 11, 1998 +.Dt MKTEMP 3 +.Os +.Sh NAME +.Nm mktemp +.Nd make temporary file name (unique) +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In unistd.h +.Ft char * +.Fn mktemp "char *template" +.Ft int +.Fn mkstemp "char *template" +.Ft int +.Fn mkstemps "char *template" "int suffixlen" +.Ft char * +.Fn mkdtemp "char *template" +.Sh DESCRIPTION +The +.Fn mktemp +function +takes the given file name template and overwrites a portion of it +to create a file name. +This file name is guaranteed not to exist at the time of function invocation +and is suitable for use +by the application. +The template may be any file name with some number of +.Ql X Ns s +appended +to it, for example +.Pa /tmp/temp.XXXXXX . +The trailing +.Ql X Ns s +are replaced with a +unique alphanumeric combination. +The number of unique file names +.Fn mktemp +can return depends on the number of +.Ql X Ns s +provided; six +.Ql X Ns s +will +result in +.Fn mktemp +selecting one of 56800235584 (62 ** 6) possible temporary file names. +.Pp +The +.Fn mkstemp +function +makes the same replacement to the template and creates the template file, +mode 0600, returning a file descriptor opened for reading and writing. +This avoids the race between testing for a file's existence and opening it +for use. +.Pp +The +.Fn mkstemps +function acts the same as +.Fn mkstemp , +except it permits a suffix to exist in the template. +The template should be of the form +.Pa /tmp/tmpXXXXXXsuffix . +The +.Fn mkstemps +function +is told the length of the suffix string. +.Pp +The +.Fn mkdtemp +function makes the same replacement to the template as in +.Fn mktemp +and creates the template directory, mode 0700. +.Sh RETURN VALUES +The +.Fn mktemp +and +.Fn mkdtemp +functions return a pointer to the template on success and +.Dv NULL +on failure. +The +.Fn mkstemp +and +.Fn mkstemps +functions +return \-1 if no suitable file could be created. +If either call fails an error code is placed in the global variable +.Va errno . +.Sh ERRORS +The +.Fn mkstemp , +.Fn mkstemps +and +.Fn mkdtemp +functions +may set +.Va errno +to one of the following values: +.Bl -tag -width Er +.It Bq Er ENOTDIR +The pathname portion of the template is not an existing directory. +.El +.Pp +The +.Fn mkstemp , +.Fn mkstemps +and +.Fn mkdtemp +functions +may also set +.Va errno +to any value specified by the +.Xr stat 2 +function. +.Pp +The +.Fn mkstemp +and +.Fn mkstemps +functions +may also set +.Va errno +to any value specified by the +.Xr open 2 +function. +.Pp +The +.Fn mkdtemp +function +may also set +.Va errno +to any value specified by the +.Xr mkdir 2 +function. +.Sh NOTES +A common problem that results in a core dump is that the programmer +passes in a read-only string to +.Fn mktemp , +.Fn mkstemp , +.Fn mkstemps +or +.Fn mkdtemp . +This is common with programs that were developed before +.St -isoC +compilers were common. +For example, calling +.Fn mkstemp +with an argument of +.Qq /tmp/tempfile.XXXXXX +will result in a core dump due to +.Fn mkstemp +attempting to modify the string constant that was given. +If the program in question makes heavy use of that type +of function call, you do have the option of compiling the program +so that it will store string constants in a writable segment of memory. +See +.Xr gcc 1 +for more information. +.Sh SEE ALSO +.Xr chmod 2 , +.Xr getpid 2 , +.Xr mkdir 2 , +.Xr open 2 , +.Xr stat 2 +.Sh HISTORY +A +.Fn mktemp +function appeared in +.At v7 . +The +.Fn mkstemp +function appeared in +.Bx 4.4 . +The +.Fn mkdtemp +function first appeared in +.Ox 2.2 , +and later in +.Fx 3.2 . +The +.Fn mkstemps +function first appeared in +.Ox 2.4 , +and later in +.Fx 3.4 . +.Sh BUGS +This family of functions produces filenames which can be guessed, +though the risk is minimized when large numbers of +.Ql X Ns s +are used to +increase the number of possible temporary filenames. +This makes the race in +.Fn mktemp , +between testing for a file's existence (in the +.Fn mktemp +function call) +and opening it for use +(later in the user application) +particularly dangerous from a security perspective. +Whenever it is possible, +.Fn mkstemp +should be used instead, since it does not have the race condition. +If +.Fn mkstemp +cannot be used, the filename created by +.Fn mktemp +should be created using the +.Dv O_EXCL +flag to +.Xr open 2 +and the return status of the call should be tested for failure. +This will ensure that the program does not continue blindly +in the event that an attacker has already created the file +with the intention of manipulating or reading its contents. +.Pp +The implementation of these functions calls +.Xr arc4random 3 , +which is not reentrant. +You must provide your own locking around this and other consumers of the +.Xr arc4random 3 +API. diff --git a/lib/libc/stdio/mktemp.c b/lib/libc/stdio/mktemp.c new file mode 100644 index 0000000..3bfad9d --- /dev/null +++ b/lib/libc/stdio/mktemp.c @@ -0,0 +1,186 @@ +/* + * Copyright (c) 1987, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <unistd.h> +#include "un-namespace.h" + +char *_mktemp(char *); + +static int _gettemp(char *, int *, int, int); + +static const unsigned char padchar[] = +"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; + +int +mkstemps(path, slen) + char *path; + int slen; +{ + int fd; + + return (_gettemp(path, &fd, 0, slen) ? fd : -1); +} + +int +mkstemp(path) + char *path; +{ + int fd; + + return (_gettemp(path, &fd, 0, 0) ? fd : -1); +} + +char * +mkdtemp(path) + char *path; +{ + return (_gettemp(path, (int *)NULL, 1, 0) ? path : (char *)NULL); +} + +char * +_mktemp(path) + char *path; +{ + return (_gettemp(path, (int *)NULL, 0, 0) ? path : (char *)NULL); +} + +__warn_references(mktemp, + "warning: mktemp() possibly used unsafely; consider using mkstemp()"); + +char * +mktemp(path) + char *path; +{ + return (_mktemp(path)); +} + +static int +_gettemp(path, doopen, domkdir, slen) + char *path; + int *doopen; + int domkdir; + int slen; +{ + char *start, *trv, *suffp; + char *pad; + struct stat sbuf; + int rval; + uint32_t rand; + + if (doopen != NULL && domkdir) { + errno = EINVAL; + return (0); + } + + for (trv = path; *trv != '\0'; ++trv) + ; + trv -= slen; + suffp = trv; + --trv; + if (trv < path) { + errno = EINVAL; + return (0); + } + + /* Fill space with random characters */ + while (trv >= path && *trv == 'X') { + rand = arc4random() % (sizeof(padchar) - 1); + *trv-- = padchar[rand]; + } + start = trv + 1; + + /* + * check the target directory. + */ + if (doopen != NULL || domkdir) { + for (; trv > path; --trv) { + if (*trv == '/') { + *trv = '\0'; + rval = stat(path, &sbuf); + *trv = '/'; + if (rval != 0) + return (0); + if (!S_ISDIR(sbuf.st_mode)) { + errno = ENOTDIR; + return (0); + } + break; + } + } + } + + for (;;) { + if (doopen) { + if ((*doopen = + _open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0) + return (1); + if (errno != EEXIST) + return (0); + } else if (domkdir) { + if (mkdir(path, 0700) == 0) + return (1); + if (errno != EEXIST) + return (0); + } else if (lstat(path, &sbuf)) + return (errno == ENOENT); + + /* If we have a collision, cycle through the space of filenames */ + for (trv = start;;) { + if (*trv == '\0' || trv == suffp) + return (0); + pad = strchr(padchar, *trv); + if (pad == NULL || *++pad == '\0') + *trv++ = padchar[0]; + else { + *trv++ = *pad; + break; + } + } + } + /*NOTREACHED*/ +} diff --git a/lib/libc/stdio/perror.c b/lib/libc/stdio/perror.c new file mode 100644 index 0000000..29016f7 --- /dev/null +++ b/lib/libc/stdio/perror.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)perror.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/uio.h> +#include <unistd.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +void +perror(s) + const char *s; +{ + char msgbuf[NL_TEXTMAX]; + struct iovec *v; + struct iovec iov[4]; + + v = iov; + if (s != NULL && *s != '\0') { + v->iov_base = (char *)s; + v->iov_len = strlen(s); + v++; + v->iov_base = ": "; + v->iov_len = 2; + v++; + } + strerror_r(errno, msgbuf, sizeof(msgbuf)); + v->iov_base = msgbuf; + v->iov_len = strlen(v->iov_base); + v++; + v->iov_base = "\n"; + v->iov_len = 1; + FLOCKFILE(stderr); + __sflush(stderr); + (void)_writev(stderr->_file, iov, (v - iov) + 1); + stderr->_flags &= ~__SOFF; + FUNLOCKFILE(stderr); +} diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3 new file mode 100644 index 0000000..feb6559 --- /dev/null +++ b/lib/libc/stdio/printf.3 @@ -0,0 +1,863 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)printf.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd October 16, 2004 +.Dt PRINTF 3 +.Os +.Sh NAME +.Nm printf , fprintf , sprintf , snprintf , asprintf , +.Nm vprintf , vfprintf, vsprintf , vsnprintf , vasprintf +.Nd formatted output conversion +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn printf "const char * restrict format" ... +.Ft int +.Fn fprintf "FILE * restrict stream" "const char * restrict format" ... +.Ft int +.Fn sprintf "char * restrict str" "const char * restrict format" ... +.Ft int +.Fn snprintf "char * restrict str" "size_t size" "const char * restrict format" ... +.Ft int +.Fn asprintf "char **ret" "const char *format" ... +.In stdarg.h +.Ft int +.Fn vprintf "const char * restrict format" "va_list ap" +.Ft int +.Fn vfprintf "FILE * restrict stream" "const char * restrict format" "va_list ap" +.Ft int +.Fn vsprintf "char * restrict str" "const char * restrict format" "va_list ap" +.Ft int +.Fn vsnprintf "char * restrict str" "size_t size" "const char * restrict format" "va_list ap" +.Ft int +.Fn vasprintf "char **ret" "const char *format" "va_list ap" +.Sh DESCRIPTION +The +.Fn printf +family of functions produces output according to a +.Fa format +as described below. +The +.Fn printf +and +.Fn vprintf +functions +write output to +.Dv stdout , +the standard output stream; +.Fn fprintf +and +.Fn vfprintf +write output to the given output +.Fa stream ; +.Fn sprintf , +.Fn snprintf , +.Fn vsprintf , +and +.Fn vsnprintf +write to the character string +.Fa str ; +and +.Fn asprintf +and +.Fn vasprintf +dynamically allocate a new string with +.Xr malloc 3 . +.Pp +These functions write the output under the control of a +.Fa format +string that specifies how subsequent arguments +(or arguments accessed via the variable-length argument facilities of +.Xr stdarg 3 ) +are converted for output. +.Pp +These functions return the number of characters printed +(not including the trailing +.Ql \e0 +used to end output to strings) or a negative value if an output error occurs, +except for +.Fn snprintf +and +.Fn vsnprintf , +which return the number of characters that would have been printed if the +.Fa size +were unlimited +(again, not including the final +.Ql \e0 ) . +.Pp +The +.Fn asprintf +and +.Fn vasprintf +functions +set +.Fa *ret +to be a pointer to a buffer sufficiently large to hold the formatted string. +This pointer should be passed to +.Xr free 3 +to release the allocated storage when it is no longer needed. +If sufficient space cannot be allocated, +.Fn asprintf +and +.Fn vasprintf +will return \-1 and set +.Fa ret +to be a +.Dv NULL +pointer. +.Pp +The +.Fn snprintf +and +.Fn vsnprintf +functions +will write at most +.Fa size Ns \-1 +of the characters printed into the output string +(the +.Fa size Ns 'th +character then gets the terminating +.Ql \e0 ) ; +if the return value is greater than or equal to the +.Fa size +argument, the string was too short +and some of the printed characters were discarded. +The output is always null-terminated. +.Pp +The +.Fn sprintf +and +.Fn vsprintf +functions +effectively assume an infinite +.Fa size . +.Pp +The format string is composed of zero or more directives: +ordinary +.\" multibyte +characters (not +.Cm % ) , +which are copied unchanged to the output stream; +and conversion specifications, each of which results +in fetching zero or more subsequent arguments. +Each conversion specification is introduced by +the +.Cm % +character. +The arguments must correspond properly (after type promotion) +with the conversion specifier. +After the +.Cm % , +the following appear in sequence: +.Bl -bullet +.It +An optional field, consisting of a decimal digit string followed by a +.Cm $ , +specifying the next argument to access. +If this field is not provided, the argument following the last +argument accessed will be used. +Arguments are numbered starting at +.Cm 1 . +If unaccessed arguments in the format string are interspersed with ones that +are accessed the results will be indeterminate. +.It +Zero or more of the following flags: +.Bl -tag -width ".So \ Sc (space)" +.It Sq Cm # +The value should be converted to an +.Dq alternate form . +For +.Cm c , d , i , n , p , s , +and +.Cm u +conversions, this option has no effect. +For +.Cm o +conversions, the precision of the number is increased to force the first +character of the output string to a zero (except if a zero value is printed +with an explicit precision of zero). +For +.Cm x +and +.Cm X +conversions, a non-zero result has the string +.Ql 0x +(or +.Ql 0X +for +.Cm X +conversions) prepended to it. +For +.Cm a , A , e , E , f , F , g , +and +.Cm G +conversions, the result will always contain a decimal point, even if no +digits follow it (normally, a decimal point appears in the results of +those conversions only if a digit follows). +For +.Cm g +and +.Cm G +conversions, trailing zeros are not removed from the result as they +would otherwise be. +.It So Cm 0 Sc (zero) +Zero padding. +For all conversions except +.Cm n , +the converted value is padded on the left with zeros rather than blanks. +If a precision is given with a numeric conversion +.Cm ( d , i , o , u , i , x , +and +.Cm X ) , +the +.Cm 0 +flag is ignored. +.It Sq Cm \- +A negative field width flag; +the converted value is to be left adjusted on the field boundary. +Except for +.Cm n +conversions, the converted value is padded on the right with blanks, +rather than on the left with blanks or zeros. +A +.Cm \- +overrides a +.Cm 0 +if both are given. +.It So "\ " Sc (space) +A blank should be left before a positive number +produced by a signed conversion +.Cm ( a , A , d , e , E , f , F , g , G , +or +.Cm i ) . +.It Sq Cm + +A sign must always be placed before a +number produced by a signed conversion. +A +.Cm + +overrides a space if both are used. +.It Sq Cm ' +Decimal conversions +.Cm ( d , u , +or +.Cm i ) +or the integral portion of a floating point conversion +.Cm ( f +or +.Cm F ) +should be grouped and separated by thousands using +the non-monetary separator returned by +.Xr localeconv 3 . +.El +.It +An optional decimal digit string specifying a minimum field width. +If the converted value has fewer characters than the field width, it will +be padded with spaces on the left (or right, if the left-adjustment +flag has been given) to fill out +the field width. +.It +An optional precision, in the form of a period +.Cm \&. +followed by an +optional digit string. +If the digit string is omitted, the precision is taken as zero. +This gives the minimum number of digits to appear for +.Cm d , i , o , u , x , +and +.Cm X +conversions, the number of digits to appear after the decimal-point for +.Cm a , A , e , E , f , +and +.Cm F +conversions, the maximum number of significant digits for +.Cm g +and +.Cm G +conversions, or the maximum number of characters to be printed from a +string for +.Cm s +conversions. +.It +An optional length modifier, that specifies the size of the argument. +The following length modifiers are valid for the +.Cm d , i , n , o , u , x , +or +.Cm X +conversion: +.Bl -column ".Cm q Em (deprecated)" ".Vt signed char" ".Vt unsigned long long" ".Vt long long *" +.It Sy Modifier Ta Cm d , i Ta Cm o , u , x , X Ta Cm n +.It Cm hh Ta Vt "signed char" Ta Vt "unsigned char" Ta Vt "signed char *" +.It Cm h Ta Vt short Ta Vt "unsigned short" Ta Vt "short *" +.It Cm l No (ell) Ta Vt long Ta Vt "unsigned long" Ta Vt "long *" +.It Cm ll No (ell ell) Ta Vt "long long" Ta Vt "unsigned long long" Ta Vt "long long *" +.It Cm j Ta Vt intmax_t Ta Vt uintmax_t Ta Vt "intmax_t *" +.It Cm t Ta Vt ptrdiff_t Ta (see note) Ta Vt "ptrdiff_t *" +.It Cm z Ta (see note) Ta Vt size_t Ta (see note) +.It Cm q Em (deprecated) Ta Vt quad_t Ta Vt u_quad_t Ta Vt "quad_t *" +.El +.Pp +Note: +the +.Cm t +modifier, when applied to a +.Cm o , u , x , +or +.Cm X +conversion, indicates that the argument is of an unsigned type +equivalent in size to a +.Vt ptrdiff_t . +The +.Cm z +modifier, when applied to a +.Cm d +or +.Cm i +conversion, indicates that the argument is of a signed type equivalent in +size to a +.Vt size_t . +Similarly, when applied to an +.Cm n +conversion, it indicates that the argument is a pointer to a signed type +equivalent in size to a +.Vt size_t . +.Pp +The following length modifier is valid for the +.Cm a , A , e , E , f , F , g , +or +.Cm G +conversion: +.Bl -column ".Sy Modifier" ".Cm a , A , e , E , f , F , g , G" +.It Sy Modifier Ta Cm a , A , e , E , f , F , g , G +.It Cm l No (ell) Ta Vt double +(ignored, same behavior as without it) +.It Cm L Ta Vt "long double" +.El +.Pp +The following length modifier is valid for the +.Cm c +or +.Cm s +conversion: +.Bl -column ".Sy Modifier" ".Vt wint_t" ".Vt wchar_t *" +.It Sy Modifier Ta Cm c Ta Cm s +.It Cm l No (ell) Ta Vt wint_t Ta Vt "wchar_t *" +.El +.It +A character that specifies the type of conversion to be applied. +.El +.Pp +A field width or precision, or both, may be indicated by +an asterisk +.Ql * +or an asterisk followed by one or more decimal digits and a +.Ql $ +instead of a +digit string. +In this case, an +.Vt int +argument supplies the field width or precision. +A negative field width is treated as a left adjustment flag followed by a +positive field width; a negative precision is treated as though it were +missing. +If a single format directive mixes positional +.Pq Li nn$ +and non-positional arguments, the results are undefined. +.Pp +The conversion specifiers and their meanings are: +.Bl -tag -width ".Cm diouxX" +.It Cm diouxX +The +.Vt int +(or appropriate variant) argument is converted to signed decimal +.Cm ( d +and +.Cm i ) , +unsigned octal +.Pq Cm o , +unsigned decimal +.Pq Cm u , +or unsigned hexadecimal +.Cm ( x +and +.Cm X ) +notation. +The letters +.Dq Li abcdef +are used for +.Cm x +conversions; the letters +.Dq Li ABCDEF +are used for +.Cm X +conversions. +The precision, if any, gives the minimum number of digits that must +appear; if the converted value requires fewer digits, it is padded on +the left with zeros. +.It Cm DOU +The +.Vt "long int" +argument is converted to signed decimal, unsigned octal, or unsigned +decimal, as if the format had been +.Cm ld , lo , +or +.Cm lu +respectively. +These conversion characters are deprecated, and will eventually disappear. +.It Cm eE +The +.Vt double +argument is rounded and converted in the style +.Sm off +.Oo \- Oc Ar d Li \&. Ar ddd Li e \\*[Pm] Ar dd +.Sm on +where there is one digit before the +decimal-point character +and the number of digits after it is equal to the precision; +if the precision is missing, +it is taken as 6; if the precision is +zero, no decimal-point character appears. +An +.Cm E +conversion uses the letter +.Ql E +(rather than +.Ql e ) +to introduce the exponent. +The exponent always contains at least two digits; if the value is zero, +the exponent is 00. +.Pp +For +.Cm a , A , e , E , f , F , g , +and +.Cm G +conversions, positive and negative infinity are represented as +.Li inf +and +.Li -inf +respectively when using the lowercase conversion character, and +.Li INF +and +.Li -INF +respectively when using the uppercase conversion character. +Similarly, NaN is represented as +.Li nan +when using the lowercase conversion, and +.Li NAN +when using the uppercase conversion. +.It Cm fF +The +.Vt double +argument is rounded and converted to decimal notation in the style +.Sm off +.Oo \- Oc Ar ddd Li \&. Ar ddd , +.Sm on +where the number of digits after the decimal-point character +is equal to the precision specification. +If the precision is missing, it is taken as 6; if the precision is +explicitly zero, no decimal-point character appears. +If a decimal point appears, at least one digit appears before it. +.It Cm gG +The +.Vt double +argument is converted in style +.Cm f +or +.Cm e +(or +.Cm F +or +.Cm E +for +.Cm G +conversions). +The precision specifies the number of significant digits. +If the precision is missing, 6 digits are given; if the precision is zero, +it is treated as 1. +Style +.Cm e +is used if the exponent from its conversion is less than \-4 or greater than +or equal to the precision. +Trailing zeros are removed from the fractional part of the result; a +decimal point appears only if it is followed by at least one digit. +.It Cm aA +The +.Vt double +argument is rounded and converted to hexadecimal notation in the style +.Sm off +.Oo \- Oc Li 0x Ar h Li \&. Ar hhhp Oo \\*[Pm] Oc Ar d , +.Sm on +where the number of digits after the hexadecimal-point character +is equal to the precision specification. +If the precision is missing, it is taken as enough to represent +the floating-point number exactly, and no rounding occurs. +If the precision is zero, no hexadecimal-point character appears. +The +.Cm p +is a literal character +.Ql p , +and the exponent consists of a positive or negative sign +followed by a decimal number representing an exponent of 2. +The +.Cm A +conversion uses the prefix +.Dq Li 0X +(rather than +.Dq Li 0x ) , +the letters +.Dq Li ABCDEF +(rather than +.Dq Li abcdef ) +to represent the hex digits, and the letter +.Ql P +(rather than +.Ql p ) +to separate the mantissa and exponent. +.Pp +Note that there may be multiple valid ways to represent floating-point +numbers in this hexadecimal format. +For example, +.Li 0x3.24p+0 , 0x6.48p-1 +and +.Li 0xc.9p-2 +are all equivalent. +The format chosen depends on the internal representation of the +number, but the implementation guarantees that the length of the +mantissa will be minimized. +Zeroes are always represented with a mantissa of 0 (preceded by a +.Ql - +if appropriate) and an exponent of +.Li +0 . +.It Cm C +Treated as +.Cm c +with the +.Cm l +(ell) modifier. +.It Cm c +The +.Vt int +argument is converted to an +.Vt "unsigned char" , +and the resulting character is written. +.Pp +If the +.Cm l +(ell) modifier is used, the +.Vt wint_t +argument shall be converted to a +.Vt wchar_t , +and the (potentially multi-byte) sequence representing the +single wide character is written, including any shift sequences. +If a shift sequence is used, the shift state is also restored +to the original state after the character. +.It Cm S +Treated as +.Cm s +with the +.Cm l +(ell) modifier. +.It Cm s +The +.Vt "char *" +argument is expected to be a pointer to an array of character type (pointer +to a string). +Characters from the array are written up to (but not including) +a terminating +.Dv NUL +character; +if a precision is specified, no more than the number specified are +written. +If a precision is given, no null character +need be present; if the precision is not specified, or is greater than +the size of the array, the array must contain a terminating +.Dv NUL +character. +.Pp +If the +.Cm l +(ell) modifier is used, the +.Vt "wchar_t *" +argument is expected to be a pointer to an array of wide characters +(pointer to a wide string). +For each wide character in the string, the (potentially multi-byte) +sequence representing the +wide character is written, including any shift sequences. +If any shift sequence is used, the shift state is also restored +to the original state after the string. +Wide characters from the array are written up to (but not including) +a terminating wide +.Dv NUL +character; +if a precision is specified, no more than the number of bytes specified are +written (including shift sequences). +Partial characters are never written. +If a precision is given, no null character +need be present; if the precision is not specified, or is greater than +the number of bytes required to render the multibyte representation of +the string, the array must contain a terminating wide +.Dv NUL +character. +.It Cm p +The +.Vt "void *" +pointer argument is printed in hexadecimal (as if by +.Ql %#x +or +.Ql %#lx ) . +.It Cm n +The number of characters written so far is stored into the +integer indicated by the +.Vt "int *" +(or variant) pointer argument. +No argument is converted. +.It Cm % +A +.Ql % +is written. +No argument is converted. +The complete conversion specification +is +.Ql %% . +.El +.Pp +The decimal point +character is defined in the program's locale (category +.Dv LC_NUMERIC ) . +.Pp +In no case does a non-existent or small field width cause truncation of +a numeric field; if the result of a conversion is wider than the field +width, the +field is expanded to contain the conversion result. +.Sh EXAMPLES +To print a date and time in the form +.Dq Li "Sunday, July 3, 10:02" , +where +.Fa weekday +and +.Fa month +are pointers to strings: +.Bd -literal -offset indent +#include <stdio.h> +fprintf(stdout, "%s, %s %d, %.2d:%.2d\en", + weekday, month, day, hour, min); +.Ed +.Pp +To print \*(Pi +to five decimal places: +.Bd -literal -offset indent +#include <math.h> +#include <stdio.h> +fprintf(stdout, "pi = %.5f\en", 4 * atan(1.0)); +.Ed +.Pp +To allocate a 128 byte string and print into it: +.Bd -literal -offset indent +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +char *newfmt(const char *fmt, ...) +{ + char *p; + va_list ap; + if ((p = malloc(128)) == NULL) + return (NULL); + va_start(ap, fmt); + (void) vsnprintf(p, 128, fmt, ap); + va_end(ap); + return (p); +} +.Ed +.Sh SECURITY CONSIDERATIONS +The +.Fn sprintf +and +.Fn vsprintf +functions are easily misused in a manner which enables malicious users +to arbitrarily change a running program's functionality through +a buffer overflow attack. +Because +.Fn sprintf +and +.Fn vsprintf +assume an infinitely long string, +callers must be careful not to overflow the actual space; +this is often hard to assure. +For safety, programmers should use the +.Fn snprintf +interface instead. +For example: +.Bd -literal +void +foo(const char *arbitrary_string, const char *and_another) +{ + char onstack[8]; + +#ifdef BAD + /* + * This first sprintf is bad behavior. Do not use sprintf! + */ + sprintf(onstack, "%s, %s", arbitrary_string, and_another); +#else + /* + * The following two lines demonstrate better use of + * snprintf(). + */ + snprintf(onstack, sizeof(onstack), "%s, %s", arbitrary_string, + and_another); +#endif +} +.Ed +.Pp +The +.Fn printf +and +.Fn sprintf +family of functions are also easily misused in a manner +allowing malicious users to arbitrarily change a running program's +functionality by either causing the program +to print potentially sensitive data +.Dq "left on the stack" , +or causing it to generate a memory fault or bus error +by dereferencing an invalid pointer. +.Pp +.Cm %n +can be used to write arbitrary data to potentially carefully-selected +addresses. +Programmers are therefore strongly advised to never pass untrusted strings +as the +.Fa format +argument, as an attacker can put format specifiers in the string +to mangle your stack, +leading to a possible security hole. +This holds true even if the string was built using a function like +.Fn snprintf , +as the resulting string may still contain user-supplied conversion specifiers +for later interpolation by +.Fn printf . +.Pp +Always use the proper secure idiom: +.Pp +.Dl "snprintf(buffer, sizeof(buffer), \*q%s\*q, string);" +.Sh ERRORS +In addition to the errors documented for the +.Xr write 2 +system call, the +.Fn printf +family of functions may fail if: +.Bl -tag -width Er +.It Bq Er EILSEQ +An invalid wide character code was encountered. +.It Bq Er ENOMEM +Insufficient storage space is available. +.El +.Sh SEE ALSO +.Xr printf 1 , +.Xr fmtcheck 3 , +.Xr scanf 3 , +.Xr setlocale 3 , +.Xr wprintf 3 +.Sh STANDARDS +Subject to the caveats noted in the +.Sx BUGS +section below, the +.Fn fprintf , +.Fn printf , +.Fn sprintf , +.Fn vprintf , +.Fn vfprintf , +and +.Fn vsprintf +functions +conform to +.St -ansiC +and +.St -isoC-99 . +With the same reservation, the +.Fn snprintf +and +.Fn vsnprintf +functions conform to +.St -isoC-99 . +.Sh HISTORY +The functions +.Fn asprintf +and +.Fn vasprintf +first appeared in the +.Tn GNU C +library. +These were implemented by +.An Peter Wemm Aq peter@FreeBSD.org +in +.Fx 2.2 , +but were later replaced with a different implementation +from +.An Todd C. Miller Aq Todd.Miller@courtesan.com +for +.Ox 2.3 . +.Sh BUGS +The conversion formats +.Cm \&%D , \&%O , +and +.Cm %U +are not standard and +are provided only for backward compatibility. +The effect of padding the +.Cm %p +format with zeros (either by the +.Cm 0 +flag or by specifying a precision), and the benign effect (i.e., none) +of the +.Cm # +flag on +.Cm %n +and +.Cm %p +conversions, as well as other +nonsensical combinations such as +.Cm %Ld , +are not standard; such combinations +should be avoided. +.Pp +The +.Nm +family of functions do not correctly handle multibyte characters in the +.Fa format +argument. diff --git a/lib/libc/stdio/printf.c b/lib/libc/stdio/printf.c new file mode 100644 index 0000000..cfd10d0 --- /dev/null +++ b/lib/libc/stdio/printf.c @@ -0,0 +1,56 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)printf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdarg.h> + +int +printf(char const * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + ret = vfprintf(stdout, fmt, ap); + va_end(ap); + return (ret); +} diff --git a/lib/libc/stdio/putc.3 b/lib/libc/stdio/putc.3 new file mode 100644 index 0000000..e149630 --- /dev/null +++ b/lib/libc/stdio/putc.3 @@ -0,0 +1,169 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)putc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd January 10, 2003 +.Dt PUTC 3 +.Os +.Sh NAME +.Nm fputc , +.Nm putc , +.Nm putc_unlocked , +.Nm putchar , +.Nm putchar_unlocked , +.Nm putw +.Nd output a character or word to a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn fputc "int c" "FILE *stream" +.Ft int +.Fn putc "int c" "FILE *stream" +.Ft int +.Fn putc_unlocked "int c" "FILE *stream" +.Ft int +.Fn putchar "int c" +.Ft int +.Fn putchar_unlocked "int c" +.Ft int +.Fn putw "int w" "FILE *stream" +.Sh DESCRIPTION +The +.Fn fputc +function +writes the character +.Fa c +(converted to an ``unsigned char'') +to the output stream pointed to by +.Fa stream . +.Pp +The +.Fn putc +macro acts essentially identically to +.Fn fputc , +but is a macro that expands in-line. +It may evaluate +.Fa stream +more than once, so arguments given to +.Fn putc +should not be expressions with potential side effects. +.Pp +The +.Fn putchar +function +is identical to +.Fn putc +with an output stream of +.Dv stdout . +.Pp +The +.Fn putw +function +writes the specified +.Vt int +to the named output +.Fa stream . +.Pp +The +.Fn putc_unlocked +and +.Fn putchar_unlocked +functions are equivalent to +.Fn putc +and +.Fn putchar +respectively, +except that the caller is responsible for locking the stream +with +.Xr flockfile 3 +before calling them. +These functions may be used to avoid the overhead of locking the stream +for each character, and to avoid output being interspersed from multiple +threads writing to the same stream. +.Sh RETURN VALUES +The functions, +.Fn fputc , +.Fn putc , +.Fn putchar , +.Fn putc_unlocked +and +.Fn putchar_unlocked +return the character written. +If an error occurs, the value +.Dv EOF +is returned. +The +.Fn putw +function +returns 0 on success; +.Dv EOF +is returned if +a write error occurs, +or if an attempt is made to write a read-only stream. +.Sh SEE ALSO +.Xr ferror 3 , +.Xr flockfile 3 , +.Xr fopen 3 , +.Xr getc 3 , +.Xr putwc 3 , +.Xr stdio 3 +.Sh STANDARDS +The functions +.Fn fputc , +.Fn putc , +and +.Fn putchar , +conform to +.St -isoC . +The +.Fn putc_unlocked +and +.Fn putchar_unlocked +functions conform to +.St -p1003.1-2001 . +A function +.Fn putw +function appeared in +.At v6 . +.Sh BUGS +The size and byte order of an +.Vt int +varies from one machine to another, and +.Fn putw +is not recommended for portable applications. diff --git a/lib/libc/stdio/putc.c b/lib/libc/stdio/putc.c new file mode 100644 index 0000000..864df9f --- /dev/null +++ b/lib/libc/stdio/putc.c @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)putc.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +#undef putc + +int +putc(c, fp) + int c; + FILE *fp; +{ + int retval; + FLOCKFILE(fp); + /* Orientation set by __sputc() when buffer is full. */ + /* ORIENT(fp, -1); */ + retval = __sputc(c, fp); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/putchar.c b/lib/libc/stdio/putchar.c new file mode 100644 index 0000000..ead5565 --- /dev/null +++ b/lib/libc/stdio/putchar.c @@ -0,0 +1,67 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)putchar.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +#undef putchar + +/* + * A subroutine version of the macro putchar + */ +int +putchar(c) + int c; +{ + int retval; + FILE *so = stdout; + + FLOCKFILE(so); + /* Orientation set by __sputc() when buffer is full. */ + /* ORIENT(so, -1); */ + retval = __sputc(c, so); + FUNLOCKFILE(so); + return (retval); +} diff --git a/lib/libc/stdio/puts.c b/lib/libc/stdio/puts.c new file mode 100644 index 0000000..3e7c495 --- /dev/null +++ b/lib/libc/stdio/puts.c @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)puts.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <string.h> +#include "un-namespace.h" +#include "fvwrite.h" +#include "libc_private.h" +#include "local.h" + +/* + * Write the given string to stdout, appending a newline. + */ +int +puts(s) + char const *s; +{ + int retval; + size_t c = strlen(s); + struct __suio uio; + struct __siov iov[2]; + + iov[0].iov_base = (void *)s; + iov[0].iov_len = c; + iov[1].iov_base = "\n"; + iov[1].iov_len = 1; + uio.uio_resid = c + 1; + uio.uio_iov = &iov[0]; + uio.uio_iovcnt = 2; + FLOCKFILE(stdout); + ORIENT(stdout, -1); + retval = __sfvwrite(stdout, &uio) ? EOF : '\n'; + FUNLOCKFILE(stdout); + return (retval); +} diff --git a/lib/libc/stdio/putw.c b/lib/libc/stdio/putw.c new file mode 100644 index 0000000..717b148 --- /dev/null +++ b/lib/libc/stdio/putw.c @@ -0,0 +1,66 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)putw.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "fvwrite.h" +#include "libc_private.h" + +int +putw(w, fp) + int w; + FILE *fp; +{ + int retval; + struct __suio uio; + struct __siov iov; + + iov.iov_base = &w; + iov.iov_len = uio.uio_resid = sizeof(w); + uio.uio_iov = &iov; + uio.uio_iovcnt = 1; + FLOCKFILE(fp); + retval = __sfvwrite(fp, &uio); + FUNLOCKFILE(fp); + return (retval); +} diff --git a/lib/libc/stdio/putwc.3 b/lib/libc/stdio/putwc.3 new file mode 100644 index 0000000..4e46834 --- /dev/null +++ b/lib/libc/stdio/putwc.3 @@ -0,0 +1,107 @@ +.\" $NetBSD: putwc.3,v 1.2 2002/02/07 07:00:26 ross Exp $ +.\" +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)putc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd March 3, 2004 +.Dt PUTWC 3 +.Os +.Sh NAME +.Nm fputwc , +.Nm putwc , +.Nm putwchar +.Nd output a wide character to a stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft wint_t +.Fn fputwc "wchar_t wc" "FILE *stream" +.Ft wint_t +.Fn putwc "wchar_t wc" "FILE *stream" +.Ft wint_t +.Fn putwchar "wchar_t wc" +.Sh DESCRIPTION +The +.Fn fputwc +function +writes the wide character +.Fa wc +to the output stream pointed to by +.Fa stream . +.Pp +The +.Fn putwc +function +acts essentially identically to +.Fn fputwc . +.Pp +The +.Fn putwchar +function +is identical to +.Fn putwc +with an output stream of +.Dv stdout . +.Sh RETURN VALUES +The +.Fn fputwc , +.Fn putwc , +and +.Fn putwchar +functions +return the wide character written. +If an error occurs, the value +.Dv WEOF +is returned. +.Sh SEE ALSO +.Xr ferror 3 , +.Xr fopen 3 , +.Xr getwc 3 , +.Xr putc 3 , +.Xr stdio 3 +.Sh STANDARDS +The +.Fn fputwc , +.Fn putwc , +and +.Fn putwchar +functions +conform to +.St -isoC-99 . diff --git a/lib/libc/stdio/putwc.c b/lib/libc/stdio/putwc.c new file mode 100644 index 0000000..8fe065b --- /dev/null +++ b/lib/libc/stdio/putwc.c @@ -0,0 +1,48 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +#undef putwc + +/* + * Synonym for fputwc(). The only difference is that putwc(), if it is a + * macro, may evaluate `fp' more than once. + */ +wint_t +putwc(wchar_t wc, FILE *fp) +{ + + return (fputwc(wc, fp)); +} diff --git a/lib/libc/stdio/putwchar.c b/lib/libc/stdio/putwchar.c new file mode 100644 index 0000000..5503071 --- /dev/null +++ b/lib/libc/stdio/putwchar.c @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +#undef putwchar + +/* + * Synonym for fputwc(wc, stdout). + */ +wint_t +putwchar(wchar_t wc) +{ + + return (fputwc(wc, stdout)); +} diff --git a/lib/libc/stdio/refill.c b/lib/libc/stdio/refill.c new file mode 100644 index 0000000..b76bb70 --- /dev/null +++ b/lib/libc/stdio/refill.c @@ -0,0 +1,150 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)refill.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" + +#include "libc_private.h" +#include "local.h" + +static int lflush(FILE *); + +static int +lflush(FILE *fp) +{ + int ret = 0; + + if ((fp->_flags & (__SLBF|__SWR)) == (__SLBF|__SWR)) { + FLOCKFILE(fp); + ret = __sflush(fp); + FUNLOCKFILE(fp); + } + return (ret); +} + +/* + * Refill a stdio buffer. + * Return EOF on eof or error, 0 otherwise. + */ +int +__srefill(FILE *fp) +{ + + /* make sure stdio is set up */ + if (!__sdidinit) + __sinit(); + + ORIENT(fp, -1); + + fp->_r = 0; /* largely a convenience for callers */ + + /* SysV does not make this test; take it out for compatibility */ + if (fp->_flags & __SEOF) + return (EOF); + + /* if not already reading, have to be reading and writing */ + if ((fp->_flags & __SRD) == 0) { + if ((fp->_flags & __SRW) == 0) { + errno = EBADF; + fp->_flags |= __SERR; + return (EOF); + } + /* switch to reading */ + if (fp->_flags & __SWR) { + if (__sflush(fp)) + return (EOF); + fp->_flags &= ~__SWR; + fp->_w = 0; + fp->_lbfsize = 0; + } + fp->_flags |= __SRD; + } else { + /* + * We were reading. If there is an ungetc buffer, + * we must have been reading from that. Drop it, + * restoring the previous buffer (if any). If there + * is anything in that buffer, return. + */ + if (HASUB(fp)) { + FREEUB(fp); + if ((fp->_r = fp->_ur) != 0) { + fp->_p = fp->_extra->_up; + return (0); + } + } + } + + if (fp->_bf._base == NULL) + __smakebuf(fp); + + /* + * Before reading from a line buffered or unbuffered file, + * flush all line buffered output files, per the ANSI C + * standard. + */ + if (fp->_flags & (__SLBF|__SNBF)) { + /* Ignore this file in _fwalk to avoid potential deadlock. */ + fp->_flags |= __SIGN; + (void) _fwalk(lflush); + fp->_flags &= ~__SIGN; + + /* Now flush this file without locking it. */ + if ((fp->_flags & (__SLBF|__SWR)) == (__SLBF|__SWR)) + __sflush(fp); + } + fp->_p = fp->_bf._base; + fp->_r = _sread(fp, (char *)fp->_p, fp->_bf._size); + fp->_flags &= ~__SMOD; /* buffer contents are again pristine */ + if (fp->_r <= 0) { + if (fp->_r == 0) + fp->_flags |= __SEOF; + else { + fp->_r = 0; + fp->_flags |= __SERR; + } + return (EOF); + } + return (0); +} diff --git a/lib/libc/stdio/remove.3 b/lib/libc/stdio/remove.3 new file mode 100644 index 0000000..cf088c7 --- /dev/null +++ b/lib/libc/stdio/remove.3 @@ -0,0 +1,87 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)remove.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt REMOVE 3 +.Os +.Sh NAME +.Nm remove +.Nd remove directory entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn remove "const char *path" +.Sh DESCRIPTION +The +.Fn remove +function removes the file or directory specified by +.Fa path . +.Pp +If +.Fa path +specifies a directory, +.Fn remove "path" +is the equivalent of +.Fn rmdir "path" . +Otherwise, it is the equivalent of +.Fn unlink "path" . +.Sh RETURN VALUES +.Rv -std remove +.Sh ERRORS +The +.Fn remove +function +may fail and set +.Va errno +for any of the errors specified for the routines +.Xr lstat 2 , +.Xr rmdir 2 +or +.Xr unlink 2 . +.Sh SEE ALSO +.Xr rmdir 2 , +.Xr unlink 2 +.Sh STANDARDS +The +.Fn remove +function conforms to +.St -isoC +and +.St -xpg4.2 . diff --git a/lib/libc/stdio/remove.c b/lib/libc/stdio/remove.c new file mode 100644 index 0000000..b17124c --- /dev/null +++ b/lib/libc/stdio/remove.c @@ -0,0 +1,59 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)remove.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <stdio.h> + +int +remove(file) + const char *file; +{ + struct stat sb; + + if (lstat(file, &sb) < 0) + return (-1); + if (S_ISDIR(sb.st_mode)) + return (rmdir(file)); + return (unlink(file)); +} diff --git a/lib/libc/stdio/rewind.c b/lib/libc/stdio/rewind.c new file mode 100644 index 0000000..a9b91db --- /dev/null +++ b/lib/libc/stdio/rewind.c @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)rewind.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +void +rewind(FILE *fp) +{ + int serrno = errno; + + /* make sure stdio is set up */ + if (!__sdidinit) + __sinit(); + + FLOCKFILE(fp); + if (_fseeko(fp, (off_t)0, SEEK_SET, 1) == 0) { + clearerr_unlocked(fp); + errno = serrno; + } + FUNLOCKFILE(fp); +} diff --git a/lib/libc/stdio/rget.c b/lib/libc/stdio/rget.c new file mode 100644 index 0000000..9a0bd97 --- /dev/null +++ b/lib/libc/stdio/rget.c @@ -0,0 +1,59 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)rget.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include "local.h" + +/* + * Handle getc() when the buffer ran out: + * Refill, then return the first character + * in the newly-filled buffer. + */ +int +__srget(FILE *fp) +{ + if (__srefill(fp) == 0) { + fp->_r--; + return (*fp->_p++); + } + return (EOF); +} diff --git a/lib/libc/stdio/scanf.3 b/lib/libc/stdio/scanf.3 new file mode 100644 index 0000000..4b74826 --- /dev/null +++ b/lib/libc/stdio/scanf.3 @@ -0,0 +1,517 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)scanf.3 8.2 (Berkeley) 12/11/93 +.\" $FreeBSD$ +.\" +.Dd January 4, 2003 +.Dt SCANF 3 +.Os +.Sh NAME +.Nm scanf , +.Nm fscanf , +.Nm sscanf , +.Nm vscanf , +.Nm vsscanf , +.Nm vfscanf +.Nd input format conversion +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn scanf "const char * restrict format" ... +.Ft int +.Fn fscanf "FILE * restrict stream" "const char * restrict format" ... +.Ft int +.Fn sscanf "const char * restrict str" "const char * restrict format" ... +.In stdarg.h +.Ft int +.Fn vscanf "const char * restrict format" "va_list ap" +.Ft int +.Fn vsscanf "const char * restrict str" "const char * restrict format" "va_list ap" +.Ft int +.Fn vfscanf "FILE * restrict stream" "const char * restrict format" "va_list ap" +.Sh DESCRIPTION +The +.Fn scanf +family of functions scans input according to a +.Fa format +as described below. +This format may contain +.Em conversion specifiers ; +the results from such conversions, if any, +are stored through the +.Em pointer +arguments. +The +.Fn scanf +function +reads input from the standard input stream +.Dv stdin , +.Fn fscanf +reads input from the stream pointer +.Fa stream , +and +.Fn sscanf +reads its input from the character string pointed to by +.Fa str . +The +.Fn vfscanf +function +is analogous to +.Xr vfprintf 3 +and reads input from the stream pointer +.Fa stream +using a variable argument list of pointers (see +.Xr stdarg 3 ) . +The +.Fn vscanf +function scans a variable argument list from the standard input and +the +.Fn vsscanf +function scans it from a string; +these are analogous to +the +.Fn vprintf +and +.Fn vsprintf +functions respectively. +Each successive +.Em pointer +argument must correspond properly with +each successive conversion specifier +(but see the +.Cm * +conversion below). +All conversions are introduced by the +.Cm % +(percent sign) character. +The +.Fa format +string +may also contain other characters. +White space (such as blanks, tabs, or newlines) in the +.Fa format +string match any amount of white space, including none, in the input. +Everything else +matches only itself. +Scanning stops +when an input character does not match such a format character. +Scanning also stops +when an input conversion cannot be made (see below). +.Sh CONVERSIONS +Following the +.Cm % +character introducing a conversion +there may be a number of +.Em flag +characters, as follows: +.Bl -tag -width ".Cm l No (ell)" +.It Cm * +Suppresses assignment. +The conversion that follows occurs as usual, but no pointer is used; +the result of the conversion is simply discarded. +.It Cm hh +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt char +(rather than +.Vt int ) . +.It Cm h +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "short int" +(rather than +.Vt int ) . +.It Cm l No (ell) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long int" +(rather than +.Vt int ) , +that the conversion will be one of +.Cm a , e , f , +or +.Cm g +and the next pointer is a pointer to +.Vt double +(rather than +.Vt float ) , +or that the conversion will be one of +.Cm c , +.Cm s +or +.Cm \&[ +and the next pointer is a pointer to an array of +.Vt wchar_t +(rather than +.Vt char ) . +.It Cm ll No (ell ell) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long long int" +(rather than +.Vt int ) . +.It Cm L +Indicates that the conversion will be one of +.Cm a , e , f , +or +.Cm g +and the next pointer is a pointer to +.Vt "long double" . +.It Cm j +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt intmax_t +(rather than +.Vt int ) . +.It Cm t +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt ptrdiff_t +(rather than +.Vt int ) . +.It Cm z +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt size_t +(rather than +.Vt int ) . +.It Cm q +(deprecated.) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long long int" +(rather than +.Vt int ) . +.El +.Pp +In addition to these flags, +there may be an optional maximum field width, +expressed as a decimal integer, +between the +.Cm % +and the conversion. +If no width is given, +a default of +.Dq infinity +is used (with one exception, below); +otherwise at most this many bytes are scanned +in processing the conversion. +In the case of the +.Cm lc , +.Cm ls +and +.Cm l[ +conversions, the field width specifies the maximum number +of multibyte characters that will be scanned. +Before conversion begins, +most conversions skip white space; +this white space is not counted against the field width. +.Pp +The following conversions are available: +.Bl -tag -width XXXX +.It Cm % +Matches a literal +.Ql % . +That is, +.Dq Li %% +in the format string +matches a single input +.Ql % +character. +No conversion is done, and assignment does not occur. +.It Cm d +Matches an optionally signed decimal integer; +the next pointer must be a pointer to +.Vt int . +.It Cm i +Matches an optionally signed integer; +the next pointer must be a pointer to +.Vt int . +The integer is read in base 16 if it begins +with +.Ql 0x +or +.Ql 0X , +in base 8 if it begins with +.Ql 0 , +and in base 10 otherwise. +Only characters that correspond to the base are used. +.It Cm o +Matches an octal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm u +Matches an optionally signed decimal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm x , X +Matches an optionally signed hexadecimal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm a , A , e , E , f , F , g , G +Matches a floating-point number in the style of +.Xr strtod 3 . +The next pointer must be a pointer to +.Vt float +(unless +.Cm l +or +.Cm L +is specified.) +.It Cm s +Matches a sequence of non-white-space characters; +the next pointer must be a pointer to +.Vt char , +and the array must be large enough to accept all the sequence and the +terminating +.Dv NUL +character. +The input string stops at white space +or at the maximum field width, whichever occurs first. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed after conversion by +.Xr mbrtowc 3 . +.It Cm S +The same as +.Cm ls . +.It Cm c +Matches a sequence of +.Em width +count +characters (default 1); +the next pointer must be a pointer to +.Vt char , +and there must be enough room for all the characters +(no terminating +.Dv NUL +is added). +The usual skip of leading white space is suppressed. +To skip white space first, use an explicit space in the format. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed after conversion by +.Xr mbrtowc 3 . +.It Cm C +The same as +.Cm lc . +.It Cm \&[ +Matches a nonempty sequence of characters from the specified set +of accepted characters; +the next pointer must be a pointer to +.Vt char , +and there must be enough room for all the characters in the string, +plus a terminating +.Dv NUL +character. +The usual skip of leading white space is suppressed. +The string is to be made up of characters in +(or not in) +a particular set; +the set is defined by the characters between the open bracket +.Cm [ +character +and a close bracket +.Cm ] +character. +The set +.Em excludes +those characters +if the first character after the open bracket is a circumflex +.Cm ^ . +To include a close bracket in the set, +make it the first character after the open bracket +or the circumflex; +any other position will end the set. +The hyphen character +.Cm - +is also special; +when placed between two other characters, +it adds all intervening characters to the set. +To include a hyphen, +make it the last character before the final close bracket. +For instance, +.Ql [^]0-9-] +means the set +.Dq "everything except close bracket, zero through nine, and hyphen" . +The string ends with the appearance of a character not in the +(or, with a circumflex, in) set +or when the field width runs out. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed after conversion by +.Xr mbrtowc 3 . +.It Cm p +Matches a pointer value (as printed by +.Ql %p +in +.Xr printf 3 ) ; +the next pointer must be a pointer to +.Vt void . +.It Cm n +Nothing is expected; +instead, the number of characters consumed thus far from the input +is stored through the next pointer, +which must be a pointer to +.Vt int . +This is +.Em not +a conversion, although it can be suppressed with the +.Cm * +flag. +.El +.Pp +The decimal point +character is defined in the program's locale (category +.Dv LC_NUMERIC ) . +.Pp +For backwards compatibility, a +.Dq conversion +of +.Ql %\e0 +causes an immediate return of +.Dv EOF . +.Sh RETURN VALUES +These +functions +return +the number of input items assigned, which can be fewer than provided +for, or even zero, in the event of a matching failure. +Zero +indicates that, while there was input available, +no conversions were assigned; +typically this is due to an invalid input character, +such as an alphabetic character for a +.Ql %d +conversion. +The value +.Dv EOF +is returned if an input failure occurs before any conversion such as an +end-of-file occurs. +If an error or end-of-file occurs after conversion +has begun, +the number of conversions which were successfully completed is returned. +.Sh SEE ALSO +.Xr getc 3 , +.Xr mbrtowc 3 , +.Xr printf 3 , +.Xr strtod 3 , +.Xr strtol 3 , +.Xr strtoul 3 , +.Xr wscanf 3 +.Sh STANDARDS +The functions +.Fn fscanf , +.Fn scanf , +.Fn sscanf , +.Fn vfscanf , +.Fn vscanf +and +.Fn vsscanf +conform to +.St -isoC-99 . +.Sh BUGS +Earlier implementations of +.Nm +treated +.Cm \&%D , \&%E , \&%F , \&%O +and +.Cm \&%X +as their lowercase equivalents with an +.Cm l +modifier. +In addition, +.Nm +treated an unknown conversion character as +.Cm \&%d +or +.Cm \&%D , +depending on its case. +This functionality has been removed. +.Pp +Numerical strings are truncated to 512 characters; for example, +.Cm %f +and +.Cm %d +are implicitly +.Cm %512f +and +.Cm %512d . +.Pp +The +.Cm %n$ +modifiers for positional arguments are not implemented. +.Pp +The +.Nm +family of functions do not correctly handle multibyte characters in the +.Fa format +argument. diff --git a/lib/libc/stdio/scanf.c b/lib/libc/stdio/scanf.c new file mode 100644 index 0000000..37236cd --- /dev/null +++ b/lib/libc/stdio/scanf.c @@ -0,0 +1,62 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)scanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdarg.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +scanf(char const * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + FLOCKFILE(stdin); + ret = __svfscanf(stdin, fmt, ap); + FUNLOCKFILE(stdin); + va_end(ap); + return (ret); +} diff --git a/lib/libc/stdio/setbuf.3 b/lib/libc/stdio/setbuf.3 new file mode 100644 index 0000000..4dccb4a --- /dev/null +++ b/lib/libc/stdio/setbuf.3 @@ -0,0 +1,213 @@ +.\" Copyright (c) 1980, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the American National Standards Committee X3, on Information +.\" Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)setbuf.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt SETBUF 3 +.Os +.Sh NAME +.Nm setbuf , +.Nm setbuffer , +.Nm setlinebuf , +.Nm setvbuf +.Nd stream buffering operations +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft void +.Fn setbuf "FILE * restrict stream" "char * restrict buf" +.Ft void +.Fn setbuffer "FILE *stream" "char *buf" "int size" +.Ft int +.Fn setlinebuf "FILE *stream" +.Ft int +.Fn setvbuf "FILE * restrict stream" "char * restrict buf" "int mode" "size_t size" +.Sh DESCRIPTION +The three types of buffering available are unbuffered, block buffered, +and line buffered. +When an output stream is unbuffered, information appears on the +destination file or terminal as soon as written; +when it is block buffered many characters are saved up and written as a block; +when it is line buffered characters are saved up until a newline is +output or input is read from any stream attached to a terminal device +(typically +.Dv stdin ) . +The function +.Xr fflush 3 +may be used to force the block out early. +(See +.Xr fclose 3 . ) +.Pp +Normally all files are block buffered. +When the first +.Tn I/O +operation occurs on a file, +.Xr malloc 3 +is called, +and an optimally-sized buffer is obtained. +If a stream refers to a terminal +(as +.Dv stdout +normally does) it is line buffered. +The standard error stream +.Dv stderr +is always unbuffered. +.Pp +The +.Fn setvbuf +function +may be used to alter the buffering behavior of a stream. +The +.Fa mode +argument must be one of the following three macros: +.Bl -tag -width _IOFBF -offset indent +.It Dv _IONBF +unbuffered +.It Dv _IOLBF +line buffered +.It Dv _IOFBF +fully buffered +.El +.Pp +The +.Fa size +argument may be given as zero +to obtain deferred optimal-size buffer allocation as usual. +If it is not zero, +then except for unbuffered files, the +.Fa buf +argument should point to a buffer at least +.Fa size +bytes long; +this buffer will be used instead of the current buffer. +If +.Fa buf +is not +.Dv NULL , +it is the caller's responsibility to +.Xr free 3 +this buffer after closing the stream. +(If the +.Fa size +argument +is not zero but +.Fa buf +is +.Dv NULL , +a buffer of the given size will be allocated immediately, +and released on close. +This is an extension to ANSI C; +portable code should use a size of 0 with any +.Dv NULL +buffer.) +.Pp +The +.Fn setvbuf +function may be used at any time, +but may have peculiar side effects +(such as discarding input or flushing output) +if the stream is ``active''. +Portable applications should call it only once on any given stream, +and before any +.Tn I/O +is performed. +.Pp +The other three calls are, in effect, simply aliases for calls to +.Fn setvbuf . +Except for the lack of a return value, the +.Fn setbuf +function is exactly equivalent to the call +.Pp +.Dl "setvbuf(stream, buf, buf ? _IOFBF : _IONBF, BUFSIZ);" +.Pp +The +.Fn setbuffer +function +is the same, except that the size of the buffer is up to the caller, +rather than being determined by the default +.Dv BUFSIZ . +The +.Fn setlinebuf +function +is exactly equivalent to the call: +.Pp +.Dl "setvbuf(stream, (char *)NULL, _IOLBF, 0);" +.Sh RETURN VALUES +The +.Fn setvbuf +function returns 0 on success, or +.Dv EOF +if the request cannot be honored +(note that the stream is still functional in this case). +.Pp +The +.Fn setlinebuf +function returns what the equivalent +.Fn setvbuf +would have returned. +.Sh SEE ALSO +.Xr fclose 3 , +.Xr fopen 3 , +.Xr fread 3 , +.Xr malloc 3 , +.Xr printf 3 , +.Xr puts 3 +.Sh STANDARDS +The +.Fn setbuf +and +.Fn setvbuf +functions +conform to +.St -isoC . +.Sh BUGS +The +.Fn setbuffer +and +.Fn setlinebuf +functions are not portable to versions of +.Bx +before +.Bx 4.2 . +On +.Bx 4.2 +and +.Bx 4.3 +systems, +.Fn setbuf +always uses a suboptimal buffer size and should be avoided. diff --git a/lib/libc/stdio/setbuf.c b/lib/libc/stdio/setbuf.c new file mode 100644 index 0000000..348104c --- /dev/null +++ b/lib/libc/stdio/setbuf.c @@ -0,0 +1,50 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)setbuf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include "local.h" + +void +setbuf(FILE * __restrict fp, char * __restrict buf) +{ + (void) setvbuf(fp, buf, buf ? _IOFBF : _IONBF, BUFSIZ); +} diff --git a/lib/libc/stdio/setbuffer.c b/lib/libc/stdio/setbuffer.c new file mode 100644 index 0000000..ec77917 --- /dev/null +++ b/lib/libc/stdio/setbuffer.c @@ -0,0 +1,64 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)setbuffer.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +void +setbuffer(fp, buf, size) + FILE *fp; + char *buf; + int size; +{ + + (void)setvbuf(fp, buf, buf ? _IOFBF : _IONBF, (size_t)size); +} + +/* + * set line buffering + */ +int +setlinebuf(fp) + FILE *fp; +{ + + return (setvbuf(fp, (char *)NULL, _IOLBF, (size_t)0)); +} diff --git a/lib/libc/stdio/setvbuf.c b/lib/libc/stdio/setvbuf.c new file mode 100644 index 0000000..7ab91e5 --- /dev/null +++ b/lib/libc/stdio/setvbuf.c @@ -0,0 +1,165 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)setvbuf.c 8.2 (Berkeley) 11/16/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +/* + * Set one of the three kinds of buffering, optionally including + * a buffer. + */ +int +setvbuf(FILE * __restrict fp, char * __restrict buf, int mode, size_t size) +{ + int ret, flags; + size_t iosize; + int ttyflag; + + /* + * Verify arguments. The `int' limit on `size' is due to this + * particular implementation. Note, buf and size are ignored + * when setting _IONBF. + */ + if (mode != _IONBF) + if ((mode != _IOFBF && mode != _IOLBF) || (int)size < 0) + return (EOF); + + FLOCKFILE(fp); + /* + * Write current buffer, if any. Discard unread input (including + * ungetc data), cancel line buffering, and free old buffer if + * malloc()ed. We also clear any eof condition, as if this were + * a seek. + */ + ret = 0; + (void)__sflush(fp); + if (HASUB(fp)) + FREEUB(fp); + fp->_r = fp->_lbfsize = 0; + flags = fp->_flags; + if (flags & __SMBF) + free((void *)fp->_bf._base); + flags &= ~(__SLBF | __SNBF | __SMBF | __SOPT | __SOFF | __SNPT | __SEOF); + + /* If setting unbuffered mode, skip all the hard work. */ + if (mode == _IONBF) + goto nbf; + + /* + * Find optimal I/O size for seek optimization. This also returns + * a `tty flag' to suggest that we check isatty(fd), but we do not + * care since our caller told us how to buffer. + */ + flags |= __swhatbuf(fp, &iosize, &ttyflag); + if (size == 0) { + buf = NULL; /* force local allocation */ + size = iosize; + } + + /* Allocate buffer if needed. */ + if (buf == NULL) { + if ((buf = malloc(size)) == NULL) { + /* + * Unable to honor user's request. We will return + * failure, but try again with file system size. + */ + ret = EOF; + if (size != iosize) { + size = iosize; + buf = malloc(size); + } + } + if (buf == NULL) { + /* No luck; switch to unbuffered I/O. */ +nbf: + fp->_flags = flags | __SNBF; + fp->_w = 0; + fp->_bf._base = fp->_p = fp->_nbuf; + fp->_bf._size = 1; + FUNLOCKFILE(fp); + return (ret); + } + flags |= __SMBF; + } + + /* + * Kill any seek optimization if the buffer is not the + * right size. + * + * SHOULD WE ALLOW MULTIPLES HERE (i.e., ok iff (size % iosize) == 0)? + */ + if (size != iosize) + flags |= __SNPT; + + /* + * Fix up the FILE fields, and set __cleanup for output flush on + * exit (since we are buffered in some way). + */ + if (mode == _IOLBF) + flags |= __SLBF; + fp->_flags = flags; + fp->_bf._base = fp->_p = (unsigned char *)buf; + fp->_bf._size = size; + /* fp->_lbfsize is still 0 */ + if (flags & __SWR) { + /* + * Begin or continue writing: see __swsetup(). Note + * that __SNBF is impossible (it was handled earlier). + */ + if (flags & __SLBF) { + fp->_w = 0; + fp->_lbfsize = -fp->_bf._size; + } else + fp->_w = size; + } else { + /* begin/continue reading, or stay in intermediate state */ + fp->_w = 0; + } + __cleanup = _cleanup; + + FUNLOCKFILE(fp); + return (ret); +} diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c new file mode 100644 index 0000000..ee5219e --- /dev/null +++ b/lib/libc/stdio/snprintf.c @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)snprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <limits.h> +#include <stdio.h> +#include <stdarg.h> + +#include "local.h" + +int +snprintf(char * __restrict str, size_t n, char const * __restrict fmt, ...) +{ + size_t on; + int ret; + va_list ap; + FILE f; + struct __sFILEX ext; + + on = n; + if (n != 0) + n--; + if (n > INT_MAX) + n = INT_MAX; + va_start(ap, fmt); + f._file = -1; + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = n; + f._extra = &ext; + INITEXTRA(&f); + ret = __vfprintf(&f, fmt, ap); + if (on > 0) + *f._p = '\0'; + va_end(ap); + return (ret); +} diff --git a/lib/libc/stdio/sprintf.c b/lib/libc/stdio/sprintf.c new file mode 100644 index 0000000..cf1587f --- /dev/null +++ b/lib/libc/stdio/sprintf.c @@ -0,0 +1,67 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)sprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdarg.h> +#include <limits.h> +#include "local.h" + +int +sprintf(char * __restrict str, char const * __restrict fmt, ...) +{ + int ret; + va_list ap; + FILE f; + struct __sFILEX ext; + + f._file = -1; + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = INT_MAX; + f._extra = &ext; + INITEXTRA(&f); + va_start(ap, fmt); + ret = __vfprintf(&f, fmt, ap); + va_end(ap); + *f._p = 0; + return (ret); +} diff --git a/lib/libc/stdio/sscanf.c b/lib/libc/stdio/sscanf.c new file mode 100644 index 0000000..4db0d29 --- /dev/null +++ b/lib/libc/stdio/sscanf.c @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)sscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include "local.h" + +static int eofread(void *, char *, int); + +/* ARGSUSED */ +static int +eofread(cookie, buf, len) + void *cookie; + char *buf; + int len; +{ + + return (0); +} + +int +sscanf(const char * __restrict str, char const * __restrict fmt, ...) +{ + int ret; + va_list ap; + struct __sFILEX extra; + FILE f; + + f._file = -1; + f._flags = __SRD; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._r = strlen(str); + f._read = eofread; + f._ub._base = NULL; + f._lb._base = NULL; + f._extra = &extra; + INITEXTRA(&f); + va_start(ap, fmt); + ret = __svfscanf(&f, fmt, ap); + va_end(ap); + return (ret); +} diff --git a/lib/libc/stdio/stdio.3 b/lib/libc/stdio/stdio.3 new file mode 100644 index 0000000..e839bea --- /dev/null +++ b/lib/libc/stdio/stdio.3 @@ -0,0 +1,333 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)stdio.3 8.7 (Berkeley) 4/19/94 +.\" $FreeBSD$ +.\" +.Dd January 10, 2003 +.Dt STDIO 3 +.Os +.Sh NAME +.Nm stdio +.Nd standard input/output library functions +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Vt FILE *stdin ; +.Vt FILE *stdout ; +.Vt FILE *stderr ; +.Sh DESCRIPTION +The standard +.Tn I/O +library provides a simple and efficient buffered stream +.Tn I/O +interface. +Input and output is mapped into logical data streams +and the physical +.Tn I/O +characteristics are concealed. +The functions and macros are listed +below; more information is available from the individual man pages. +.Pp +A stream is associated with an external file (which may be a physical +device) by +.Em opening +a file, which may involve creating a new file. +Creating an +existing file causes its former contents to be discarded. +If a file can support positioning requests (such as a disk file, as opposed +to a terminal) then a +.Em file position indicator +associated with the stream is positioned at the start of the file (byte +zero), unless the file is opened with append mode. +If append mode +is used, the position indicator will be placed at the end-of-file. +The position indicator is maintained by subsequent reads, writes +and positioning requests. +All input occurs as if the characters +were read by successive calls to the +.Xr fgetc 3 +function; all output takes place as if all characters were +written by successive calls to the +.Xr fputc 3 +function. +.Pp +A file is disassociated from a stream by +.Em closing +the file. +Output streams are flushed (any unwritten buffer contents are transferred +to the host environment) before the stream is disassociated from the file. +The value of a pointer to a +.Dv FILE +object is indeterminate (garbage) after a file is closed. +.Pp +A file may be subsequently reopened, by the same or another program +execution, and its contents reclaimed or modified (if it can be repositioned +at the start). +If the main function returns to its original caller, or +the +.Xr exit 3 +function is called, all open files are closed (hence all output +streams are flushed) before program termination. +Other methods +of program termination may not close files properly and hence +buffered output may be lost. +In particular, +.Xr _exit 2 +does not flush stdio files. +Neither does an exit due to a signal. +Buffers are flushed by +.Xr abort 3 +as required by POSIX, although previous implementations did not. +.Pp +This implementation makes no distinction between +.Dq text +and +.Dq binary +streams. +In effect, all streams are binary. +No translation is performed and no extra padding appears on any stream. +.Pp +At program startup, three streams are predefined and need not be +opened explicitly: +.Bl -bullet -compact -offset indent +.It +.Em standard input +(for reading conventional input), +.It +.Em standard output +(for writing conventional output), and +.It +.Em standard error +(for writing diagnostic output). +.El +These streams are abbreviated +.Dv stdin , stdout +and +.Dv stderr . +Initially, the standard error stream +is unbuffered; the standard input and output streams are +fully buffered if and only if the streams do not refer to +an interactive or +.Dq terminal +device, as determined by the +.Xr isatty 3 +function. +In fact, +.Em all +freshly-opened streams that refer to terminal devices +default to line buffering, and +pending output to such streams is written automatically +whenever such an input stream is read. +Note that this applies only to +.Dq "true reads" ; +if the read request can be satisfied by existing buffered data, +no automatic flush will occur. +In these cases, +or when a large amount of computation is done after printing +part of a line on an output terminal, it is necessary to +.Xr fflush 3 +the standard output before going off and computing so that the output +will appear. +Alternatively, these defaults may be modified via the +.Xr setvbuf 3 +function. +.Pp +The +.Nm +library is a part of the library +.Nm libc +and routines are automatically loaded as needed by the C compiler. +The +.Tn SYNOPSIS +sections of the following manual pages indicate which include files +are to be used, what the compiler declaration for the function +looks like and which external variables are of interest. +.Pp +The following are defined as macros; +these names may not be re-used +without first removing their current definitions with +.Ic #undef : +.Dv BUFSIZ , +.Dv EOF , +.Dv FILENAME_MAX , +.Dv FOPEN_MAX , +.Dv L_ctermid , +.Dv L_cuserid , +.Dv L_tmpnam , +.Dv NULL , +.Dv P_tmpdir , +.Dv SEEK_CUR , +.Dv SEEK_END , +.Dv SEEK_SET , +.Dv TMP_MAX , +.Dv clearerr , +.Dv clearerr_unlocked , +.Dv feof , +.Dv feof_unlocked , +.Dv ferror , +.Dv ferror_unlocked , +.Dv fileno , +.Dv fileno_unlocked , +.Dv fropen , +.Dv fwopen , +.Dv getc , +.Dv getc_unlocked , +.Dv getchar , +.Dv getchar_unlocked , +.Dv putc , +.Dv putc_unlocked , +.Dv putchar , +.Dv putchar_unlocked , +.Dv stderr , +.Dv stdin +and +.Dv stdout . +Function versions of the macro functions +.Dv clearerr , +.Dv clearerr_unlocked , +.Dv feof , +.Dv feof_unlocked , +.Dv ferror , +.Dv ferror_unlocked , +.Dv fileno , +.Dv fileno_unlocked , +.Dv getc , +.Dv getc_unlocked , +.Dv getchar , +.Dv getchar_unlocked , +.Dv putc , +.Dv putc_unlocked , +.Dv putchar , +and +.Dv putchar_unlocked +exist and will be used if the macro +definitions are explicitly removed. +.Sh SEE ALSO +.Xr close 2 , +.Xr open 2 , +.Xr read 2 , +.Xr write 2 +.Sh STANDARDS +The +.Nm +library conforms to +.St -isoC-99 . +.Sh LIST OF FUNCTIONS +.Bl -column "Description" +.It Sy "Function Description" +.It "asprintf formatted output conversion" +.It "clearerr check and reset stream status" +.It "fclose close a stream" +.It "fdopen stream open functions" +.It "feof check and reset stream status" +.It "ferror check and reset stream status" +.It "fflush flush a stream" +.It "fgetc get next character or word from input stream" +.It "fgetln get a line from a stream" +.It "fgetpos reposition a stream" +.It "fgets get a line from a stream" +.It "fgetwc get next wide character from input stream" +.It "fgetws get a line of wide characters from a stream" +.It "fileno check and reset stream status" +.It "fopen stream open functions" +.It "fprintf formatted output conversion" +.It "fpurge flush a stream" +.It "fputc output a character or word to a stream" +.It "fputs output a line to a stream" +.It "fputwc output a wide character to a stream" +.It "fputws output a line of wide characters to a stream" +.It "fread binary stream input/output" +.It "freopen stream open functions" +.It "fropen open a stream" +.It "fscanf input format conversion" +.It "fseek reposition a stream" +.It "fsetpos reposition a stream" +.It "ftell reposition a stream" +.It "funopen open a stream" +.It "fwide set/get orientation of stream" +.It "fwopen open a stream" +.It "fwprintf formatted wide character output conversion" +.It "fwrite binary stream input/output" +.It "getc get next character or word from input stream" +.It "getchar get next character or word from input stream" +.It "gets get a line from a stream" +.It "getw get next character or word from input stream" +.It "getwc get next wide character from input stream" +.It "getwchar get next wide character from input stream" +.It "mkdtemp create unique temporary directory" +.It "mkstemp create unique temporary file" +.It "mktemp create unique temporary file" +.It "perror system error messages" +.It "printf formatted output conversion" +.It "putc output a character or word to a stream" +.It "putchar output a character or word to a stream" +.It "puts output a line to a stream" +.It "putw output a character or word to a stream" +.It "putwc output a wide character to a stream" +.It "putwchar output a wide character to a stream" +.It "remove remove directory entry" +.It "rewind reposition a stream" +.It "scanf input format conversion" +.It "setbuf stream buffering operations" +.It "setbuffer stream buffering operations" +.It "setlinebuf stream buffering operations" +.It "setvbuf stream buffering operations" +.It "snprintf formatted output conversion" +.It "sprintf formatted output conversion" +.It "sscanf input format conversion" +.It "strerror system error messages" +.It "swprintf formatted wide character output conversion" +.It "sys_errlist system error messages" +.It "sys_nerr system error messages" +.It "tempnam temporary file routines" +.It "tmpfile temporary file routines" +.It "tmpnam temporary file routines" +.It "ungetc un-get character from input stream" +.It "ungetwc un-get wide character from input stream" +.It "vasprintf formatted output conversion" +.It "vfprintf formatted output conversion" +.It "vfscanf input format conversion" +.It "vfwprintf formatted wide character output conversion" +.It "vprintf formatted output conversion" +.It "vscanf input format conversion" +.It "vsnprintf formatted output conversion" +.It "vsprintf formatted output conversion" +.It "vsscanf input format conversion" +.It "vswprintf formatted wide character output conversion" +.It "vwprintf formatted wide character output conversion" +.It "wprintf formatted wide character output conversion" +.El +.Sh BUGS +The standard buffered functions do not interact well with certain other +library and system functions, especially +.Xr vfork 2 . diff --git a/lib/libc/stdio/stdio.c b/lib/libc/stdio/stdio.c new file mode 100644 index 0000000..daae1a2 --- /dev/null +++ b/lib/libc/stdio/stdio.c @@ -0,0 +1,191 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)stdio.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include "un-namespace.h" +#include "local.h" + +/* + * Small standard I/O/seek/close functions. + */ +int +__sread(cookie, buf, n) + void *cookie; + char *buf; + int n; +{ + FILE *fp = cookie; + + return(_read(fp->_file, buf, (size_t)n)); +} + +int +__swrite(cookie, buf, n) + void *cookie; + char const *buf; + int n; +{ + FILE *fp = cookie; + + return (_write(fp->_file, buf, (size_t)n)); +} + +fpos_t +__sseek(cookie, offset, whence) + void *cookie; + fpos_t offset; + int whence; +{ + FILE *fp = cookie; + + return (lseek(fp->_file, (off_t)offset, whence)); +} + +int +__sclose(cookie) + void *cookie; +{ + + return (_close(((FILE *)cookie)->_file)); +} + +/* + * Higher level wrappers. + */ +int +_sread(fp, buf, n) + FILE *fp; + char *buf; + int n; +{ + int ret; + + ret = (*fp->_read)(fp->_cookie, buf, n); + if (ret > 0) { + if (fp->_flags & __SOFF) { + if (fp->_offset <= OFF_MAX - ret) + fp->_offset += ret; + else + fp->_flags &= ~__SOFF; + } + } else if (ret < 0) + fp->_flags &= ~__SOFF; + return (ret); +} + +int +_swrite(fp, buf, n) + FILE *fp; + char const *buf; + int n; +{ + int ret; + int serrno; + + if (fp->_flags & __SAPP) { + serrno = errno; + if (_sseek(fp, (fpos_t)0, SEEK_END) == -1 && + (fp->_flags & __SOPT)) + return (-1); + errno = serrno; + } + ret = (*fp->_write)(fp->_cookie, buf, n); + /* __SOFF removed even on success in case O_APPEND mode is set. */ + if (ret >= 0) { + if ((fp->_flags & (__SAPP|__SOFF)) == (__SAPP|__SOFF) && + fp->_offset <= OFF_MAX - ret) + fp->_offset += ret; + else + fp->_flags &= ~__SOFF; + + } else if (ret < 0) + fp->_flags &= ~__SOFF; + return (ret); +} + +fpos_t +_sseek(fp, offset, whence) + FILE *fp; + fpos_t offset; + int whence; +{ + fpos_t ret; + int serrno, errret; + + serrno = errno; + errno = 0; + ret = (*fp->_seek)(fp->_cookie, offset, whence); + errret = errno; + if (errno == 0) + errno = serrno; + /* + * Disallow negative seeks per POSIX. + * It is needed here to help upper level caller + * in the cases it can't detect. + */ + if (ret < 0) { + if (errret == 0) { + if (offset != 0 || whence != SEEK_CUR) { + if (HASUB(fp)) + FREEUB(fp); + fp->_p = fp->_bf._base; + fp->_r = 0; + fp->_flags &= ~__SEOF; + } + fp->_flags |= __SERR; + errno = EINVAL; + } else if (errret == ESPIPE) + fp->_flags &= ~__SAPP; + fp->_flags &= ~__SOFF; + ret = -1; + } else if (fp->_flags & __SOPT) { + fp->_flags |= __SOFF; + fp->_offset = ret; + } + return (ret); +} diff --git a/lib/libc/stdio/swprintf.c b/lib/libc/stdio/swprintf.c new file mode 100644 index 0000000..d665318 --- /dev/null +++ b/lib/libc/stdio/swprintf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +swprintf(wchar_t * __restrict s, size_t n, const wchar_t * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + ret = vswprintf(s, n, fmt, ap); + va_end(ap); + + return (ret); +} diff --git a/lib/libc/stdio/swscanf.c b/lib/libc/stdio/swscanf.c new file mode 100644 index 0000000..728a3d6 --- /dev/null +++ b/lib/libc/stdio/swscanf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +swscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, ...) +{ + va_list ap; + int r; + + va_start(ap, fmt); + r = vswscanf(str, fmt, ap); + va_end(ap); + + return (r); +} diff --git a/lib/libc/stdio/tempnam.c b/lib/libc/stdio/tempnam.c new file mode 100644 index 0000000..8ac39ed --- /dev/null +++ b/lib/libc/stdio/tempnam.c @@ -0,0 +1,94 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)tempnam.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <paths.h> + +__warn_references(tempnam, + "warning: tempnam() possibly used unsafely; consider using mkstemp()"); + +extern char *_mktemp(char *); + +char * +tempnam(dir, pfx) + const char *dir, *pfx; +{ + int sverrno; + char *f, *name; + + if (!(name = malloc(MAXPATHLEN))) + return(NULL); + + if (!pfx) + pfx = "tmp."; + + if (issetugid() == 0 && (f = getenv("TMPDIR"))) { + (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, + *(f + strlen(f) - 1) == '/'? "": "/", pfx); + if ((f = _mktemp(name))) + return(f); + } + + if ((f = (char *)dir)) { + (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, + *(f + strlen(f) - 1) == '/'? "": "/", pfx); + if ((f = _mktemp(name))) + return(f); + } + + f = P_tmpdir; + (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); + if ((f = _mktemp(name))) + return(f); + + f = _PATH_TMP; + (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); + if ((f = _mktemp(name))) + return(f); + + sverrno = errno; + free(name); + errno = sverrno; + return(NULL); +} diff --git a/lib/libc/stdio/tmpfile.c b/lib/libc/stdio/tmpfile.c new file mode 100644 index 0000000..22d0eb1 --- /dev/null +++ b/lib/libc/stdio/tmpfile.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)tmpfile.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <signal.h> +#include <unistd.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <paths.h> +#include "un-namespace.h" + +FILE * +tmpfile() +{ + sigset_t set, oset; + FILE *fp; + int fd, sverrno; +#define TRAILER "tmp.XXXXXX" + char *buf; + const char *tmpdir; + + tmpdir = NULL; + if (issetugid() == 0) + tmpdir = getenv("TMPDIR"); + if (tmpdir == NULL) + tmpdir = _PATH_TMP; + + (void)asprintf(&buf, "%s%s%s", tmpdir, + (tmpdir[strlen(tmpdir) - 1] == '/') ? "" : "/", TRAILER); + if (buf == NULL) + return (NULL); + + sigfillset(&set); + (void)_sigprocmask(SIG_BLOCK, &set, &oset); + + fd = mkstemp(buf); + if (fd != -1) + (void)unlink(buf); + + free(buf); + + (void)_sigprocmask(SIG_SETMASK, &oset, NULL); + + if (fd == -1) + return (NULL); + + if ((fp = fdopen(fd, "w+")) == NULL) { + sverrno = errno; + (void)_close(fd); + errno = sverrno; + return (NULL); + } + return (fp); +} diff --git a/lib/libc/stdio/tmpnam.3 b/lib/libc/stdio/tmpnam.3 new file mode 100644 index 0000000..4fe577c --- /dev/null +++ b/lib/libc/stdio/tmpnam.3 @@ -0,0 +1,239 @@ +.\" Copyright (c) 1988, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the American National Standards Committee X3, on Information +.\" Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)tmpnam.3 8.2 (Berkeley) 11/17/93 +.\" $FreeBSD$ +.\" +.Dd November 17, 1993 +.Dt TMPFILE 3 +.Os +.Sh NAME +.Nm tempnam , +.Nm tmpfile , +.Nm tmpnam +.Nd temporary file routines +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft FILE * +.Fn tmpfile void +.Ft char * +.Fn tmpnam "char *str" +.Ft char * +.Fn tempnam "const char *tmpdir" "const char *prefix" +.Sh DESCRIPTION +The +.Fn tmpfile +function +returns a pointer to a stream associated with a file descriptor returned +by the routine +.Xr mkstemp 3 . +The created file is unlinked before +.Fn tmpfile +returns, causing the file to be automatically deleted when the last +reference to it is closed. +The file is opened with the access value +.Ql w+ . +The file is created in the directory determined by the environment variable +.Ev TMPDIR +if set. +The default location if +.Ev TMPDIR +is not set is +.Pa /tmp . +.Pp +The +.Fn tmpnam +function +returns a pointer to a file name, in the +.Dv P_tmpdir +directory, which +did not reference an existing file at some indeterminate point in the +past. +.Dv P_tmpdir +is defined in the include file +.In stdio.h . +If the argument +.Fa str +is +.Pf non- Dv NULL , +the file name is copied to the buffer it references. +Otherwise, the file name is copied to a static buffer. +In either case, +.Fn tmpnam +returns a pointer to the file name. +.Pp +The buffer referenced by +.Fa str +is expected to be at least +.Dv L_tmpnam +bytes in length. +.Dv L_tmpnam +is defined in the include file +.In stdio.h . +.Pp +The +.Fn tempnam +function +is similar to +.Fn tmpnam , +but provides the ability to specify the directory which will +contain the temporary file and the file name prefix. +.Pp +The environment variable +.Ev TMPDIR +(if set), the argument +.Fa tmpdir +(if +.Pf non- Dv NULL ) , +the directory +.Dv P_tmpdir , +and the directory +.Pa /tmp +are tried, in the listed order, as directories in which to store the +temporary file. +.Pp +The argument +.Fa prefix , +if +.Pf non- Dv NULL , +is used to specify a file name prefix, which will be the +first part of the created file name. +The +.Fn tempnam +function +allocates memory in which to store the file name; the returned pointer +may be used as a subsequent argument to +.Xr free 3 . +.Sh RETURN VALUES +The +.Fn tmpfile +function +returns a pointer to an open file stream on success, and a +.Dv NULL +pointer +on error. +.Pp +The +.Fn tmpnam +and +.Fn tempfile +functions +return a pointer to a file name on success, and a +.Dv NULL +pointer +on error. +.Sh COMPATIBILITY +These interfaces are provided from System V and +.Tn ANSI +compatibility only. +.Pp +Most historic implementations of these functions provide +only a limited number of possible temporary file names +(usually 26) +before file names will start being recycled. +System V implementations of these functions +(and of +.Xr mktemp 3 ) +use the +.Xr access 2 +system call to determine whether or not the temporary file +may be created. +This has obvious ramifications for setuid or setgid programs, +complicating the portable use of these interfaces in such programs. +.Pp +The +.Fn tmpfile +interface should not be used in software expected to be used on other systems +if there is any possibility that the user does not wish the temporary file to +be publicly readable and writable. +.Sh ERRORS +The +.Fn tmpfile +function +may fail and set the global variable +.Va errno +for any of the errors specified for the library functions +.Xr fdopen 3 +or +.Xr mkstemp 3 . +.Pp +The +.Fn tmpnam +function +may fail and set +.Va errno +for any of the errors specified for the library function +.Xr mktemp 3 . +.Pp +The +.Fn tempnam +function +may fail and set +.Va errno +for any of the errors specified for the library functions +.Xr malloc 3 +or +.Xr mktemp 3 . +.Sh SECURITY CONSIDERATIONS +The +.Fn tmpnam +and +.Fn tempnam +functions are susceptible to a race condition +occurring between the selection of the file name +and the creation of the file, +which allows malicious users +to potentially overwrite arbitrary files in the system, +depending on the level of privilege of the running program. +Additionally, there is no means by which +file permissions may be specified. +It is strongly suggested that +.Xr mkstemp 3 +be used in place of these functions. +(See +the FSA.) +.Sh SEE ALSO +.Xr mkstemp 3 , +.Xr mktemp 3 +.Sh STANDARDS +The +.Fn tmpfile +and +.Fn tmpnam +functions +conform to +.St -isoC . diff --git a/lib/libc/stdio/tmpnam.c b/lib/libc/stdio/tmpnam.c new file mode 100644 index 0000000..7c75b54 --- /dev/null +++ b/lib/libc/stdio/tmpnam.c @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)tmpnam.c 8.3 (Berkeley) 3/28/94"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> + +#include <stdio.h> +#include <unistd.h> + +__warn_references(tmpnam, + "warning: tmpnam() possibly used unsafely; consider using mkstemp()"); + +extern char *_mktemp(char *); + +char * +tmpnam(s) + char *s; +{ + static u_long tmpcount; + static char buf[L_tmpnam]; + + if (s == NULL) + s = buf; + (void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXX", P_tmpdir, tmpcount); + ++tmpcount; + return (_mktemp(s)); +} diff --git a/lib/libc/stdio/ungetc.3 b/lib/libc/stdio/ungetc.3 new file mode 100644 index 0000000..3ffab32 --- /dev/null +++ b/lib/libc/stdio/ungetc.3 @@ -0,0 +1,102 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ungetc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd June 4, 1993 +.Dt UNGETC 3 +.Os +.Sh NAME +.Nm ungetc +.Nd un-get character from input stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.Ft int +.Fn ungetc "int c" "FILE *stream" +.Sh DESCRIPTION +The +.Fn ungetc +function pushes the character +.Fa c +(converted to an unsigned char) +back onto the input stream pointed to by +.Fa stream . +The pushed-back characters will be returned by subsequent reads on the +stream (in reverse order). +A successful intervening call, +using the same stream, +to one of the file positioning functions +.Xr ( fseek 3 , +.Xr fsetpos 3 , +or +.Xr rewind 3 ) +will discard the pushed back characters. +.Pp +One character of push-back is guaranteed, +but as long as there is sufficient memory, +an effectively infinite amount of pushback is allowed. +.Pp +If a character is successfully pushed-back, +the end-of-file indicator for the stream is cleared. +The file-position indicator is decremented +by each successful call to +.Fn ungetc ; +if its value was 0 before a call, its value is unspecified after +the call. +.Sh RETURN VALUES +The +.Fn ungetc +function returns the character pushed-back after the conversion, +or +.Dv EOF +if the operation fails. +If the value of the argument +.Fa c +character equals +.Dv EOF , +the operation will fail and the stream will remain unchanged. +.Sh SEE ALSO +.Xr fseek 3 , +.Xr getc 3 , +.Xr setvbuf 3 , +.Xr ungetwc 3 +.Sh STANDARDS +The +.Fn ungetc +function conforms to +.St -isoC . diff --git a/lib/libc/stdio/ungetc.c b/lib/libc/stdio/ungetc.c new file mode 100644 index 0000000..0113161 --- /dev/null +++ b/lib/libc/stdio/ungetc.c @@ -0,0 +1,172 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ungetc.c 8.2 (Berkeley) 11/3/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "un-namespace.h" +#include "local.h" +#include "libc_private.h" + +static int __submore(FILE *); + +/* + * Expand the ungetc buffer `in place'. That is, adjust fp->_p when + * the buffer moves, so that it points the same distance from the end, + * and move the bytes in the buffer around as necessary so that they + * are all at the end (stack-style). + */ +static int +__submore(FILE *fp) +{ + int i; + unsigned char *p; + + if (fp->_ub._base == fp->_ubuf) { + /* + * Get a new buffer (rather than expanding the old one). + */ + if ((p = malloc((size_t)BUFSIZ)) == NULL) + return (EOF); + fp->_ub._base = p; + fp->_ub._size = BUFSIZ; + p += BUFSIZ - sizeof(fp->_ubuf); + for (i = sizeof(fp->_ubuf); --i >= 0;) + p[i] = fp->_ubuf[i]; + fp->_p = p; + return (0); + } + i = fp->_ub._size; + p = realloc(fp->_ub._base, (size_t)(i << 1)); + if (p == NULL) + return (EOF); + /* no overlap (hence can use memcpy) because we doubled the size */ + (void)memcpy((void *)(p + i), (void *)p, (size_t)i); + fp->_p = p + i; + fp->_ub._base = p; + fp->_ub._size = i << 1; + return (0); +} + +/* + * MT-safe version + */ +int +ungetc(int c, FILE *fp) +{ + int ret; + + if (!__sdidinit) + __sinit(); + FLOCKFILE(fp); + ORIENT(fp, -1); + ret = __ungetc(c, fp); + FUNLOCKFILE(fp); + return (ret); +} + +/* + * Non-MT-safe version + */ +int +__ungetc(int c, FILE *fp) +{ + + if (c == EOF) + return (EOF); + if ((fp->_flags & __SRD) == 0) { + /* + * Not already reading: no good unless reading-and-writing. + * Otherwise, flush any current write stuff. + */ + if ((fp->_flags & __SRW) == 0) + return (EOF); + if (fp->_flags & __SWR) { + if (__sflush(fp)) + return (EOF); + fp->_flags &= ~__SWR; + fp->_w = 0; + fp->_lbfsize = 0; + } + fp->_flags |= __SRD; + } + c = (unsigned char)c; + + /* + * If we are in the middle of ungetc'ing, just continue. + * This may require expanding the current ungetc buffer. + */ + if (HASUB(fp)) { + if (fp->_r >= fp->_ub._size && __submore(fp)) + return (EOF); + *--fp->_p = c; + fp->_r++; + return (c); + } + fp->_flags &= ~__SEOF; + + /* + * If we can handle this by simply backing up, do so, + * but never replace the original character. + * (This makes sscanf() work when scanning `const' data.) + */ + if (fp->_bf._base != NULL && fp->_p > fp->_bf._base && + fp->_p[-1] == c) { + fp->_p--; + fp->_r++; + return (c); + } + + /* + * Create an ungetc buffer. + * Initially, we will use the `reserve' buffer. + */ + fp->_ur = fp->_r; + fp->_extra->_up = fp->_p; + fp->_ub._base = fp->_ubuf; + fp->_ub._size = sizeof(fp->_ubuf); + fp->_ubuf[sizeof(fp->_ubuf) - 1] = c; + fp->_p = &fp->_ubuf[sizeof(fp->_ubuf) - 1]; + fp->_r = 1; + return (c); +} diff --git a/lib/libc/stdio/ungetwc.3 b/lib/libc/stdio/ungetwc.3 new file mode 100644 index 0000000..40907af --- /dev/null +++ b/lib/libc/stdio/ungetwc.3 @@ -0,0 +1,99 @@ +.\" $NetBSD: ungetwc.3,v 1.3 2002/02/07 07:00:27 ross Exp $ +.\" +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ungetc.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd March 3, 2004 +.Dt UNGETWC 3 +.Os +.Sh NAME +.Nm ungetwc +.Nd un-get wide character from input stream +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft wint_t +.Fn ungetwc "wint_t wc" "FILE *stream" +.Sh DESCRIPTION +The +.Fn ungetwc +function pushes the wide character +.Fa wc +(converted to an +.Vt wchar_t ) +back onto the input stream pointed to by +.Fa stream . +The pushed-backed wide characters will be returned by subsequent reads on the +stream (in reverse order). +A successful intervening call, using the same stream, to one of the file +positioning functions +.Xr fseek 3 , +.Xr fsetpos 3 , +or +.Xr rewind 3 +will discard the pushed back wide characters. +.Pp +One wide character of push-back is guaranteed, +but as long as there is +sufficient memory, an effectively infinite amount of pushback is allowed. +.Pp +If a character is successfully pushed-back, +the end-of-file indicator for the stream is cleared. +.Sh RETURN VALUES +The +.Fn ungetwc +function +returns +the wide character pushed-back after the conversion, or +.Dv WEOF +if the operation fails. +If the value of the argument +.Fa c +character equals +.Dv WEOF , +the operation will fail and the stream will remain unchanged. +.Sh SEE ALSO +.Xr fseek 3 , +.Xr getwc 3 +.Sh STANDARDS +The +.Fn ungetwc +function conforms to +.St -isoC-99 . diff --git a/lib/libc/stdio/ungetwc.c b/lib/libc/stdio/ungetwc.c new file mode 100644 index 0000000..510648b --- /dev/null +++ b/lib/libc/stdio/ungetwc.c @@ -0,0 +1,77 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" +#include "mblocal.h" + +/* + * Non-MT-safe version. + */ +wint_t +__ungetwc(wint_t wc, FILE *fp) +{ + char buf[MB_LEN_MAX]; + size_t len; + + if (wc == WEOF) + return (WEOF); + if ((len = __wcrtomb(buf, wc, &fp->_extra->mbstate)) == (size_t)-1) { + fp->_flags |= __SERR; + return (WEOF); + } + while (len-- != 0) + if (__ungetc((unsigned char)buf[len], fp) == EOF) + return (WEOF); + + return (wc); +} + +/* + * MT-safe version. + */ +wint_t +ungetwc(wint_t wc, FILE *fp) +{ + wint_t r; + + FLOCKFILE(fp); + ORIENT(fp, 1); + r = __ungetwc(wc, fp); + FUNLOCKFILE(fp); + + return (r); +} diff --git a/lib/libc/stdio/unlocked.c b/lib/libc/stdio/unlocked.c new file mode 100644 index 0000000..083d26f --- /dev/null +++ b/lib/libc/stdio/unlocked.c @@ -0,0 +1,94 @@ +/*- + * Copyright (c) 2003 Tim J. Robbins. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +#undef getchar_unlocked +int +getchar_unlocked(void) +{ + + return (__sgetc(stdin)); +} + +#undef getc_unlocked +int +getc_unlocked(FILE *fp) +{ + + return (__sgetc(fp)); +} + +#undef putchar_unlocked +int +putchar_unlocked(int ch) +{ + + return (__sputc(ch, stdout)); +} + +#undef putc_unlocked +int +putc_unlocked(int ch, FILE *fp) +{ + + return (__sputc(ch, fp)); +} + +#undef feof_unlocked +int +feof_unlocked(FILE *fp) +{ + + return (__sfeof(fp)); +} + +#undef ferror_unlocked +int +ferror_unlocked(FILE *fp) +{ + + return (__sferror(fp)); +} + +#undef clearerr_unlocked +void +clearerr_unlocked(FILE *fp) +{ + + __sclearerr(fp); +} + +#undef fileno_unlocked +int +fileno_unlocked(FILE *fp) +{ + + return (__sfileno(fp)); +} diff --git a/lib/libc/stdio/vasprintf.c b/lib/libc/stdio/vasprintf.c new file mode 100644 index 0000000..01ac068 --- /dev/null +++ b/lib/libc/stdio/vasprintf.c @@ -0,0 +1,69 @@ +/* $OpenBSD: vasprintf.c,v 1.4 1998/06/21 22:13:47 millert Exp $ */ + +/* + * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include "local.h" + +int +vasprintf(str, fmt, ap) + char **str; + const char *fmt; + __va_list ap; +{ + int ret; + FILE f; + struct __sFILEX ext; + + f._file = -1; + f._flags = __SWR | __SSTR | __SALC; + f._bf._base = f._p = (unsigned char *)malloc(128); + if (f._bf._base == NULL) { + *str = NULL; + errno = ENOMEM; + return (-1); + } + f._bf._size = f._w = 127; /* Leave room for the NUL */ + f._extra = &ext; + INITEXTRA(&f); + ret = __vfprintf(&f, fmt, ap); + if (ret < 0) { + free(f._bf._base); + *str = NULL; + errno = ENOMEM; + return (-1); + } + *f._p = '\0'; + *str = (char *)f._bf._base; + return (ret); +} diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c new file mode 100644 index 0000000..df4bac2 --- /dev/null +++ b/lib/libc/stdio/vfprintf.c @@ -0,0 +1,1656 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Actual printf innards. + * + * This code is large and complicated... + */ + +#include "namespace.h" +#include <sys/types.h> + +#include <ctype.h> +#include <limits.h> +#include <locale.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include <printf.h> + +#include <stdarg.h> +#include "un-namespace.h" + +#include "libc_private.h" +#include "local.h" +#include "fvwrite.h" + +union arg { + int intarg; + u_int uintarg; + long longarg; + u_long ulongarg; + long long longlongarg; + unsigned long long ulonglongarg; + ptrdiff_t ptrdiffarg; + size_t sizearg; + intmax_t intmaxarg; + uintmax_t uintmaxarg; + void *pvoidarg; + char *pchararg; + signed char *pschararg; + short *pshortarg; + int *pintarg; + long *plongarg; + long long *plonglongarg; + ptrdiff_t *pptrdiffarg; + size_t *psizearg; + intmax_t *pintmaxarg; +#ifndef NO_FLOATING_POINT + double doublearg; + long double longdoublearg; +#endif + wint_t wintarg; + wchar_t *pwchararg; +}; + +/* + * Type ids for argument type table. + */ +enum typeid { + T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT, + T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG, + T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET, + T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR, + T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR +}; + +static int __sprint(FILE *, struct __suio *); +static int __sbprintf(FILE *, const char *, va_list) __printflike(2, 0); +static char *__ujtoa(uintmax_t, char *, int, int, const char *, int, char, + const char *); +static char *__ultoa(u_long, char *, int, int, const char *, int, char, + const char *); +static char *__wcsconv(wchar_t *, int); +static void __find_arguments(const char *, va_list, union arg **); +static void __grow_type_table(int, enum typeid **, int *); + +/* + * Flush out all the vectors defined by the given uio, + * then reset it so that it can be reused. + */ +static int +__sprint(FILE *fp, struct __suio *uio) +{ + int err; + + if (uio->uio_resid == 0) { + uio->uio_iovcnt = 0; + return (0); + } + err = __sfvwrite(fp, uio); + uio->uio_resid = 0; + uio->uio_iovcnt = 0; + return (err); +} + +/* + * Helper function for `fprintf to unbuffered unix file': creates a + * temporary buffer. We only work on write-only files; this avoids + * worries about ungetc buffers and so forth. + */ +static int +__sbprintf(FILE *fp, const char *fmt, va_list ap) +{ + int ret; + FILE fake; + unsigned char buf[BUFSIZ]; + + /* copy the important variables */ + fake._flags = fp->_flags & ~__SNBF; + fake._file = fp->_file; + fake._cookie = fp->_cookie; + fake._write = fp->_write; + fake._extra = fp->_extra; + + /* set up the buffer */ + fake._bf._base = fake._p = buf; + fake._bf._size = fake._w = sizeof(buf); + fake._lbfsize = 0; /* not actually used, but Just In Case */ + + /* do the work, then copy any error status */ + ret = __vfprintf(&fake, fmt, ap); + if (ret >= 0 && __fflush(&fake)) + ret = EOF; + if (fake._flags & __SERR) + fp->_flags |= __SERR; + return (ret); +} + +/* + * Macros for converting digits to letters and vice versa + */ +#define to_digit(c) ((c) - '0') +#define is_digit(c) ((unsigned)to_digit(c) <= 9) +#define to_char(n) ((n) + '0') + +/* + * Convert an unsigned long to ASCII for printf purposes, returning + * a pointer to the first character of the string representation. + * Octal numbers can be forced to have a leading zero; hex numbers + * use the given digits. + */ +static char * +__ultoa(u_long val, char *endp, int base, int octzero, const char *xdigs, + int needgrp, char thousep, const char *grp) +{ + char *cp = endp; + long sval; + int ndig; + + /* + * Handle the three cases separately, in the hope of getting + * better/faster code. + */ + switch (base) { + case 10: + if (val < 10) { /* many numbers are 1 digit */ + *--cp = to_char(val); + return (cp); + } + ndig = 0; + /* + * On many machines, unsigned arithmetic is harder than + * signed arithmetic, so we do at most one unsigned mod and + * divide; this is sufficient to reduce the range of + * the incoming value to where signed arithmetic works. + */ + if (val > LONG_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && ndig == *grp && *grp != CHAR_MAX + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + if (octzero && *cp != '0') + *--cp = '0'; + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: /* oops */ + abort(); + } + return (cp); +} + +/* Identical to __ultoa, but for intmax_t. */ +static char * +__ujtoa(uintmax_t val, char *endp, int base, int octzero, const char *xdigs, + int needgrp, char thousep, const char *grp) +{ + char *cp = endp; + intmax_t sval; + int ndig; + + /* quick test for small values; __ultoa is typically much faster */ + /* (perhaps instead we should run until small, then call __ultoa?) */ + if (val <= ULONG_MAX) + return (__ultoa((u_long)val, endp, base, octzero, xdigs, + needgrp, thousep, grp)); + switch (base) { + case 10: + if (val < 10) { + *--cp = to_char(val % 10); + return (cp); + } + ndig = 0; + if (val > INTMAX_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && *grp != CHAR_MAX && ndig == *grp + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + if (octzero && *cp != '0') + *--cp = '0'; + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: + abort(); + } + return (cp); +} + +/* + * Convert a wide character string argument for the %ls format to a multibyte + * string representation. If not -1, prec specifies the maximum number of + * bytes to output, and also means that we can't assume that the wide char. + * string ends is null-terminated. + */ +static char * +__wcsconv(wchar_t *wcsarg, int prec) +{ + static const mbstate_t initial; + mbstate_t mbs; + char buf[MB_LEN_MAX]; + wchar_t *p; + char *convbuf; + size_t clen, nbytes; + + /* Allocate space for the maximum number of bytes we could output. */ + if (prec < 0) { + p = wcsarg; + mbs = initial; + nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs); + if (nbytes == (size_t)-1) + return (NULL); + } else { + /* + * Optimisation: if the output precision is small enough, + * just allocate enough memory for the maximum instead of + * scanning the string. + */ + if (prec < 128) + nbytes = prec; + else { + nbytes = 0; + p = wcsarg; + mbs = initial; + for (;;) { + clen = wcrtomb(buf, *p++, &mbs); + if (clen == 0 || clen == (size_t)-1 || + nbytes + clen > prec) + break; + nbytes += clen; + } + } + } + if ((convbuf = malloc(nbytes + 1)) == NULL) + return (NULL); + + /* Fill the output buffer. */ + p = wcsarg; + mbs = initial; + if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p, + nbytes, &mbs)) == (size_t)-1) { + free(convbuf); + return (NULL); + } + convbuf[nbytes] = '\0'; + return (convbuf); +} + +/* + * MT-safe version + */ +int +vfprintf(FILE * __restrict fp, const char * __restrict fmt0, va_list ap) + +{ + int ret; + + FLOCKFILE(fp); + ret = __vfprintf(fp, fmt0, ap); + FUNLOCKFILE(fp); + return (ret); +} + +#ifndef NO_FLOATING_POINT + +#define dtoa __dtoa +#define freedtoa __freedtoa + +#include <float.h> +#include <math.h> +#include "floatio.h" +#include "gdtoa.h" + +#define DEFPREC 6 + +static int exponent(char *, int, int); + +#endif /* !NO_FLOATING_POINT */ + +/* + * The size of the buffer we use as scratch space for integer + * conversions, among other things. Technically, we would need the + * most space for base 10 conversions with thousands' grouping + * characters between each pair of digits. 100 bytes is a + * conservative overestimate even for a 128-bit uintmax_t. + */ +#define BUF 100 + +#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ + +/* + * Flags used during conversion. + */ +#define ALT 0x001 /* alternate form */ +#define LADJUST 0x004 /* left adjustment */ +#define LONGDBL 0x008 /* long double */ +#define LONGINT 0x010 /* long integer */ +#define LLONGINT 0x020 /* long long integer */ +#define SHORTINT 0x040 /* short integer */ +#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ +#define FPT 0x100 /* Floating point number */ +#define GROUPING 0x200 /* use grouping ("'" flag) */ + /* C99 additional size modifiers: */ +#define SIZET 0x400 /* size_t */ +#define PTRDIFFT 0x800 /* ptrdiff_t */ +#define INTMAXT 0x1000 /* intmax_t */ +#define CHARINT 0x2000 /* print char using int format */ + +/* + * Non-MT-safe version + */ +int +__vfprintf(FILE *fp, const char *fmt0, va_list ap) +{ + char *fmt; /* format string */ + int ch; /* character from fmt */ + int n, n2; /* handy integer (short term usage) */ + char *cp; /* handy char pointer (short term usage) */ + struct __siov *iovp; /* for PRINT macro */ + int flags; /* flags as above */ + int ret; /* return value accumulator */ + int width; /* width from format (%8d), or 0 */ + int prec; /* precision from format; <0 for N/A */ + char sign; /* sign prefix (' ', '+', '-', or \0) */ + char thousands_sep; /* locale specific thousands separator */ + const char *grouping; /* locale specific numeric grouping rules */ + + if (__use_xprintf == 0 && getenv("USE_XPRINTF")) + __use_xprintf = 1; + if (__use_xprintf > 0) + return (__xvprintf(fp, fmt0, ap)); + +#ifndef NO_FLOATING_POINT + /* + * We can decompose the printed representation of floating + * point numbers into several parts, some of which may be empty: + * + * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ + * A B ---C--- D E F + * + * A: 'sign' holds this value if present; '\0' otherwise + * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal + * C: cp points to the string MMMNNN. Leading and trailing + * zeros are not in the string and must be added. + * D: expchar holds this character; '\0' if no exponent, e.g. %f + * F: at least two digits for decimal, at least one digit for hex + */ + char *decimal_point; /* locale specific decimal point */ + int signflag; /* true if float is negative */ + union { /* floating point arguments %[aAeEfFgG] */ + double dbl; + long double ldbl; + } fparg; + int expt; /* integer value of exponent */ + char expchar; /* exponent character: [eEpP\0] */ + char *dtoaend; /* pointer to end of converted digits */ + int expsize; /* character count for expstr */ + int lead; /* sig figs before decimal or group sep */ + int ndig; /* actual number of digits returned by dtoa */ + char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ + char *dtoaresult; /* buffer allocated by dtoa */ + int nseps; /* number of group separators with ' */ + int nrepeats; /* number of repeats of the last group */ +#endif + u_long ulval; /* integer arguments %[diouxX] */ + uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ + int base; /* base for [diouxX] conversion */ + int dprec; /* a copy of prec if [diouxX], 0 otherwise */ + int realsz; /* field size expanded by dprec, sign, etc */ + int size; /* size of converted field or string */ + int prsize; /* max size of printed field */ + const char *xdigs; /* digits for %[xX] conversion */ +#define NIOV 8 + struct __suio uio; /* output information: summary */ + struct __siov iov[NIOV];/* ... and individual io vectors */ + char buf[BUF]; /* buffer with space for digits of uintmax_t */ + char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */ + union arg *argtable; /* args, built due to positional arg */ + union arg statargtable [STATIC_ARG_TBL_SIZE]; + int nextarg; /* 1-based argument index */ + va_list orgap; /* original argument pointer */ + char *convbuf; /* wide to multibyte conversion result */ + + /* + * Choose PADSIZE to trade efficiency vs. size. If larger printf + * fields occur frequently, increase PADSIZE and make the initialisers + * below longer. + */ +#define PADSIZE 16 /* pad chunk size */ + static char blanks[PADSIZE] = + {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; + static char zeroes[PADSIZE] = + {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; + + static const char xdigs_lower[17] = "0123456789abcdef?"; + static const char xdigs_upper[17] = "0123456789ABCDEF?"; + + /* + * BEWARE, these `goto error' on error, and PAD uses `n'. + */ +#define PRINT(ptr, len) { \ + iovp->iov_base = (ptr); \ + iovp->iov_len = (len); \ + uio.uio_resid += (len); \ + iovp++; \ + if (++uio.uio_iovcnt >= NIOV) { \ + if (__sprint(fp, &uio)) \ + goto error; \ + iovp = iov; \ + } \ +} +#define PAD(howmany, with) { \ + if ((n = (howmany)) > 0) { \ + while (n > PADSIZE) { \ + PRINT(with, PADSIZE); \ + n -= PADSIZE; \ + } \ + PRINT(with, n); \ + } \ +} +#define PRINTANDPAD(p, ep, len, with) do { \ + n2 = (ep) - (p); \ + if (n2 > (len)) \ + n2 = (len); \ + if (n2 > 0) \ + PRINT((p), n2); \ + PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ +} while(0) +#define FLUSH() { \ + if (uio.uio_resid && __sprint(fp, &uio)) \ + goto error; \ + uio.uio_iovcnt = 0; \ + iovp = iov; \ +} + + /* + * Get the argument indexed by nextarg. If the argument table is + * built, use it to get the argument. If its not, get the next + * argument (and arguments must be gotten sequentially). + */ +#define GETARG(type) \ + ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ + (nextarg++, va_arg(ap, type))) + + /* + * To extend shorts properly, we need both signed and unsigned + * argument extraction methods. + */ +#define SARG() \ + (flags&LONGINT ? GETARG(long) : \ + flags&SHORTINT ? (long)(short)GETARG(int) : \ + flags&CHARINT ? (long)(signed char)GETARG(int) : \ + (long)GETARG(int)) +#define UARG() \ + (flags&LONGINT ? GETARG(u_long) : \ + flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ + flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ + (u_long)GETARG(u_int)) +#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) +#define SJARG() \ + (flags&INTMAXT ? GETARG(intmax_t) : \ + flags&SIZET ? (intmax_t)GETARG(size_t) : \ + flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ + (intmax_t)GETARG(long long)) +#define UJARG() \ + (flags&INTMAXT ? GETARG(uintmax_t) : \ + flags&SIZET ? (uintmax_t)GETARG(size_t) : \ + flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ + (uintmax_t)GETARG(unsigned long long)) + + /* + * Get * arguments, including the form *nn$. Preserve the nextarg + * that the argument can be gotten once the type is determined. + */ +#define GETASTER(val) \ + n2 = 0; \ + cp = fmt; \ + while (is_digit(*cp)) { \ + n2 = 10 * n2 + to_digit(*cp); \ + cp++; \ + } \ + if (*cp == '$') { \ + int hold = nextarg; \ + if (argtable == NULL) { \ + argtable = statargtable; \ + __find_arguments (fmt0, orgap, &argtable); \ + } \ + nextarg = n2; \ + val = GETARG (int); \ + nextarg = hold; \ + fmt = ++cp; \ + } else { \ + val = GETARG (int); \ + } + + + thousands_sep = '\0'; + grouping = NULL; + convbuf = NULL; +#ifndef NO_FLOATING_POINT + dtoaresult = NULL; + decimal_point = localeconv()->decimal_point; +#endif + /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ + if (prepwrite(fp) != 0) + return (EOF); + + /* optimise fprintf(stderr) (and other unbuffered Unix files) */ + if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && + fp->_file >= 0) + return (__sbprintf(fp, fmt0, ap)); + + fmt = (char *)fmt0; + argtable = NULL; + nextarg = 1; + va_copy(orgap, ap); + uio.uio_iov = iovp = iov; + uio.uio_resid = 0; + uio.uio_iovcnt = 0; + ret = 0; + + /* + * Scan the format for conversions (`%' character). + */ + for (;;) { + for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) + /* void */; + if ((n = fmt - cp) != 0) { + if ((unsigned)ret + n > INT_MAX) { + ret = EOF; + goto error; + } + PRINT(cp, n); + ret += n; + } + if (ch == '\0') + goto done; + fmt++; /* skip over '%' */ + + flags = 0; + dprec = 0; + width = 0; + prec = -1; + sign = '\0'; + ox[1] = '\0'; + +rflag: ch = *fmt++; +reswitch: switch (ch) { + case ' ': + /*- + * ``If the space and + flags both appear, the space + * flag will be ignored.'' + * -- ANSI X3J11 + */ + if (!sign) + sign = ' '; + goto rflag; + case '#': + flags |= ALT; + goto rflag; + case '*': + /*- + * ``A negative field width argument is taken as a + * - flag followed by a positive field width.'' + * -- ANSI X3J11 + * They don't exclude field widths read from args. + */ + GETASTER (width); + if (width >= 0) + goto rflag; + width = -width; + /* FALLTHROUGH */ + case '-': + flags |= LADJUST; + goto rflag; + case '+': + sign = '+'; + goto rflag; + case '\'': + flags |= GROUPING; + thousands_sep = *(localeconv()->thousands_sep); + grouping = localeconv()->grouping; + goto rflag; + case '.': + if ((ch = *fmt++) == '*') { + GETASTER (prec); + goto rflag; + } + prec = 0; + while (is_digit(ch)) { + prec = 10 * prec + to_digit(ch); + ch = *fmt++; + } + goto reswitch; + case '0': + /*- + * ``Note that 0 is taken as a flag, not as the + * beginning of a field width.'' + * -- ANSI X3J11 + */ + flags |= ZEROPAD; + goto rflag; + case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + n = 0; + do { + n = 10 * n + to_digit(ch); + ch = *fmt++; + } while (is_digit(ch)); + if (ch == '$') { + nextarg = n; + if (argtable == NULL) { + argtable = statargtable; + __find_arguments (fmt0, orgap, + &argtable); + } + goto rflag; + } + width = n; + goto reswitch; +#ifndef NO_FLOATING_POINT + case 'L': + flags |= LONGDBL; + goto rflag; +#endif + case 'h': + if (flags & SHORTINT) { + flags &= ~SHORTINT; + flags |= CHARINT; + } else + flags |= SHORTINT; + goto rflag; + case 'j': + flags |= INTMAXT; + goto rflag; + case 'l': + if (flags & LONGINT) { + flags &= ~LONGINT; + flags |= LLONGINT; + } else + flags |= LONGINT; + goto rflag; + case 'q': + flags |= LLONGINT; /* not necessarily */ + goto rflag; + case 't': + flags |= PTRDIFFT; + goto rflag; + case 'z': + flags |= SIZET; + goto rflag; + case 'C': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'c': + if (flags & LONGINT) { + static const mbstate_t initial; + mbstate_t mbs; + size_t mbseqlen; + + mbs = initial; + mbseqlen = wcrtomb(cp = buf, + (wchar_t)GETARG(wint_t), &mbs); + if (mbseqlen == (size_t)-1) { + fp->_flags |= __SERR; + goto error; + } + size = (int)mbseqlen; + } else { + *(cp = buf) = GETARG(int); + size = 1; + } + sign = '\0'; + break; + case 'D': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'd': + case 'i': + if (flags & INTMAX_SIZE) { + ujval = SJARG(); + if ((intmax_t)ujval < 0) { + ujval = -ujval; + sign = '-'; + } + } else { + ulval = SARG(); + if ((long)ulval < 0) { + ulval = -ulval; + sign = '-'; + } + } + base = 10; + goto number; +#ifndef NO_FLOATING_POINT + case 'a': + case 'A': + if (ch == 'a') { + ox[1] = 'x'; + xdigs = xdigs_lower; + expchar = 'p'; + } else { + ox[1] = 'X'; + xdigs = xdigs_upper; + expchar = 'P'; + } + if (prec >= 0) + prec++; + if (dtoaresult != NULL) + freedtoa(dtoaresult); + if (flags & LONGDBL) { + fparg.ldbl = GETARG(long double); + dtoaresult = cp = + __hldtoa(fparg.ldbl, xdigs, prec, + &expt, &signflag, &dtoaend); + } else { + fparg.dbl = GETARG(double); + dtoaresult = cp = + __hdtoa(fparg.dbl, xdigs, prec, + &expt, &signflag, &dtoaend); + } + if (prec < 0) + prec = dtoaend - cp; + if (expt == INT_MAX) + ox[1] = '\0'; + goto fp_common; + case 'e': + case 'E': + expchar = ch; + if (prec < 0) /* account for digit before decpt */ + prec = DEFPREC + 1; + else + prec++; + goto fp_begin; + case 'f': + case 'F': + expchar = '\0'; + goto fp_begin; + case 'g': + case 'G': + expchar = ch - ('g' - 'e'); + if (prec == 0) + prec = 1; +fp_begin: + if (prec < 0) + prec = DEFPREC; + if (dtoaresult != NULL) + freedtoa(dtoaresult); + if (flags & LONGDBL) { + fparg.ldbl = GETARG(long double); + dtoaresult = cp = + __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + } else { + fparg.dbl = GETARG(double); + dtoaresult = cp = + dtoa(fparg.dbl, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + if (expt == 9999) + expt = INT_MAX; + } +fp_common: + if (signflag) + sign = '-'; + if (expt == INT_MAX) { /* inf or nan */ + if (*cp == 'N') { + cp = (ch >= 'a') ? "nan" : "NAN"; + sign = '\0'; + } else + cp = (ch >= 'a') ? "inf" : "INF"; + size = 3; + break; + } + flags |= FPT; + ndig = dtoaend - cp; + if (ch == 'g' || ch == 'G') { + if (expt > -4 && expt <= prec) { + /* Make %[gG] smell like %[fF] */ + expchar = '\0'; + if (flags & ALT) + prec -= expt; + else + prec = ndig - expt; + if (prec < 0) + prec = 0; + } else { + /* + * Make %[gG] smell like %[eE], but + * trim trailing zeroes if no # flag. + */ + if (!(flags & ALT)) + prec = ndig; + } + } + if (expchar) { + expsize = exponent(expstr, expt - 1, expchar); + size = expsize + prec; + if (prec > 1 || flags & ALT) + ++size; + } else { + /* space for digits before decimal point */ + if (expt > 0) + size = expt; + else /* "0" */ + size = 1; + /* space for decimal pt and following digits */ + if (prec || flags & ALT) + size += prec + 1; + if (grouping && expt > 0) { + /* space for thousands' grouping */ + nseps = nrepeats = 0; + lead = expt; + while (*grouping != CHAR_MAX) { + if (lead <= *grouping) + break; + lead -= *grouping; + if (*(grouping+1)) { + nseps++; + grouping++; + } else + nrepeats++; + } + size += nseps + nrepeats; + } else + lead = expt; + } + break; +#endif /* !NO_FLOATING_POINT */ + case 'n': + /* + * Assignment-like behavior is specified if the + * value overflows or is otherwise unrepresentable. + * C99 says to use `signed char' for %hhn conversions. + */ + if (flags & LLONGINT) + *GETARG(long long *) = ret; + else if (flags & SIZET) + *GETARG(ssize_t *) = (ssize_t)ret; + else if (flags & PTRDIFFT) + *GETARG(ptrdiff_t *) = ret; + else if (flags & INTMAXT) + *GETARG(intmax_t *) = ret; + else if (flags & LONGINT) + *GETARG(long *) = ret; + else if (flags & SHORTINT) + *GETARG(short *) = ret; + else if (flags & CHARINT) + *GETARG(signed char *) = ret; + else + *GETARG(int *) = ret; + continue; /* no output */ + case 'O': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'o': + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 8; + goto nosign; + case 'p': + /*- + * ``The argument shall be a pointer to void. The + * value of the pointer is converted to a sequence + * of printable characters, in an implementation- + * defined manner.'' + * -- ANSI X3J11 + */ + ujval = (uintmax_t)(uintptr_t)GETARG(void *); + base = 16; + xdigs = xdigs_lower; + flags = flags | INTMAXT; + ox[1] = 'x'; + goto nosign; + case 'S': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 's': + if (flags & LONGINT) { + wchar_t *wcp; + + if (convbuf != NULL) + free(convbuf); + if ((wcp = GETARG(wchar_t *)) == NULL) + cp = "(null)"; + else { + convbuf = __wcsconv(wcp, prec); + if (convbuf == NULL) { + fp->_flags |= __SERR; + goto error; + } + cp = convbuf; + } + } else if ((cp = GETARG(char *)) == NULL) + cp = "(null)"; + if (prec >= 0) { + /* + * can't use strlen; can only look for the + * NUL in the first `prec' characters, and + * strlen() will go further. + */ + char *p = memchr(cp, 0, (size_t)prec); + + if (p != NULL) { + size = p - cp; + if (size > prec) + size = prec; + } else + size = prec; + } else + size = strlen(cp); + sign = '\0'; + break; + case 'U': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'u': + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 10; + goto nosign; + case 'X': + xdigs = xdigs_upper; + goto hex; + case 'x': + xdigs = xdigs_lower; +hex: + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 16; + /* leading 0x/X only if non-zero */ + if (flags & ALT && + (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) + ox[1] = ch; + + flags &= ~GROUPING; + /* unsigned conversions */ +nosign: sign = '\0'; + /*- + * ``... diouXx conversions ... if a precision is + * specified, the 0 flag will be ignored.'' + * -- ANSI X3J11 + */ +number: if ((dprec = prec) >= 0) + flags &= ~ZEROPAD; + + /*- + * ``The result of converting a zero value with an + * explicit precision of zero is no characters.'' + * -- ANSI X3J11 + * + * ``The C Standard is clear enough as is. The call + * printf("%#.0o", 0) should print 0.'' + * -- Defect Report #151 + */ + cp = buf + BUF; + if (flags & INTMAX_SIZE) { + if (ujval != 0 || prec != 0 || + (flags & ALT && base == 8)) + cp = __ujtoa(ujval, cp, base, + flags & ALT, xdigs, + flags & GROUPING, thousands_sep, + grouping); + } else { + if (ulval != 0 || prec != 0 || + (flags & ALT && base == 8)) + cp = __ultoa(ulval, cp, base, + flags & ALT, xdigs, + flags & GROUPING, thousands_sep, + grouping); + } + size = buf + BUF - cp; + if (size > BUF) /* should never happen */ + abort(); + break; + default: /* "%?" prints ?, unless ? is NUL */ + if (ch == '\0') + goto done; + /* pretend it was %c with argument ch */ + cp = buf; + *cp = ch; + size = 1; + sign = '\0'; + break; + } + + /* + * All reasonable formats wind up here. At this point, `cp' + * points to a string which (if not flags&LADJUST) should be + * padded out to `width' places. If flags&ZEROPAD, it should + * first be prefixed by any sign or other prefix; otherwise, + * it should be blank padded before the prefix is emitted. + * After any left-hand padding and prefixing, emit zeroes + * required by a decimal [diouxX] precision, then print the + * string proper, then emit zeroes required by any leftover + * floating precision; finally, if LADJUST, pad with blanks. + * + * Compute actual size, so we know how much to pad. + * size excludes decimal prec; realsz includes it. + */ + realsz = dprec > size ? dprec : size; + if (sign) + realsz++; + if (ox[1]) + realsz += 2; + + prsize = width > realsz ? width : realsz; + if ((unsigned)ret + prsize > INT_MAX) { + ret = EOF; + goto error; + } + + /* right-adjusting blank padding */ + if ((flags & (LADJUST|ZEROPAD)) == 0) + PAD(width - realsz, blanks); + + /* prefix */ + if (sign) + PRINT(&sign, 1); + + if (ox[1]) { /* ox[1] is either x, X, or \0 */ + ox[0] = '0'; + PRINT(ox, 2); + } + + /* right-adjusting zero padding */ + if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) + PAD(width - realsz, zeroes); + + /* leading zeroes from decimal precision */ + PAD(dprec - size, zeroes); + + /* the string or number proper */ +#ifndef NO_FLOATING_POINT + if ((flags & FPT) == 0) { + PRINT(cp, size); + } else { /* glue together f_p fragments */ + if (!expchar) { /* %[fF] or sufficiently short %[gG] */ + if (expt <= 0) { + PRINT(zeroes, 1); + if (prec || flags & ALT) + PRINT(decimal_point, 1); + PAD(-expt, zeroes); + /* already handled initial 0's */ + prec += expt; + } else { + PRINTANDPAD(cp, dtoaend, lead, zeroes); + cp += lead; + if (grouping) { + while (nseps>0 || nrepeats>0) { + if (nrepeats > 0) + nrepeats--; + else { + grouping--; + nseps--; + } + PRINT(&thousands_sep, + 1); + PRINTANDPAD(cp,dtoaend, + *grouping, zeroes); + cp += *grouping; + } + if (cp > dtoaend) + cp = dtoaend; + } + if (prec || flags & ALT) + PRINT(decimal_point,1); + } + PRINTANDPAD(cp, dtoaend, prec, zeroes); + } else { /* %[eE] or sufficiently long %[gG] */ + if (prec > 1 || flags & ALT) { + buf[0] = *cp++; + buf[1] = *decimal_point; + PRINT(buf, 2); + PRINT(cp, ndig-1); + PAD(prec - ndig, zeroes); + } else /* XeYYY */ + PRINT(cp, 1); + PRINT(expstr, expsize); + } + } +#else + PRINT(cp, size); +#endif + /* left-adjusting padding (always blank) */ + if (flags & LADJUST) + PAD(width - realsz, blanks); + + /* finally, adjust ret */ + ret += prsize; + + FLUSH(); /* copy out the I/O vectors */ + } +done: + FLUSH(); +error: + va_end(orgap); +#ifndef NO_FLOATING_POINT + if (dtoaresult != NULL) + freedtoa(dtoaresult); +#endif + if (convbuf != NULL) + free(convbuf); + if (__sferror(fp)) + ret = EOF; + if ((argtable != NULL) && (argtable != statargtable)) + free (argtable); + return (ret); + /* NOTREACHED */ +} + +/* + * Find all arguments when a positional parameter is encountered. Returns a + * table, indexed by argument number, of pointers to each arguments. The + * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. + * It will be replaces with a malloc-ed one if it overflows. + */ +static void +__find_arguments (const char *fmt0, va_list ap, union arg **argtable) +{ + char *fmt; /* format string */ + int ch; /* character from fmt */ + int n, n2; /* handy integer (short term usage) */ + char *cp; /* handy char pointer (short term usage) */ + int flags; /* flags as above */ + int width; /* width from format (%8d), or 0 */ + enum typeid *typetable; /* table of types */ + enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; + int tablesize; /* current size of type table */ + int tablemax; /* largest used index in table */ + int nextarg; /* 1-based argument index */ + + /* + * Add an argument type to the table, expanding if necessary. + */ +#define ADDTYPE(type) \ + ((nextarg >= tablesize) ? \ + __grow_type_table(nextarg, &typetable, &tablesize) : (void)0, \ + (nextarg > tablemax) ? tablemax = nextarg : 0, \ + typetable[nextarg++] = type) + +#define ADDSARG() \ + ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ + ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ + ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ + ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ + ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) + +#define ADDUARG() \ + ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ + ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ + ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ + ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ + ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) + + /* + * Add * arguments to the type array. + */ +#define ADDASTER() \ + n2 = 0; \ + cp = fmt; \ + while (is_digit(*cp)) { \ + n2 = 10 * n2 + to_digit(*cp); \ + cp++; \ + } \ + if (*cp == '$') { \ + int hold = nextarg; \ + nextarg = n2; \ + ADDTYPE (T_INT); \ + nextarg = hold; \ + fmt = ++cp; \ + } else { \ + ADDTYPE (T_INT); \ + } + fmt = (char *)fmt0; + typetable = stattypetable; + tablesize = STATIC_ARG_TBL_SIZE; + tablemax = 0; + nextarg = 1; + for (n = 0; n < STATIC_ARG_TBL_SIZE; n++) + typetable[n] = T_UNUSED; + + /* + * Scan the format for conversions (`%' character). + */ + for (;;) { + for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) + /* void */; + if (ch == '\0') + goto done; + fmt++; /* skip over '%' */ + + flags = 0; + width = 0; + +rflag: ch = *fmt++; +reswitch: switch (ch) { + case ' ': + case '#': + goto rflag; + case '*': + ADDASTER (); + goto rflag; + case '-': + case '+': + case '\'': + goto rflag; + case '.': + if ((ch = *fmt++) == '*') { + ADDASTER (); + goto rflag; + } + while (is_digit(ch)) { + ch = *fmt++; + } + goto reswitch; + case '0': + goto rflag; + case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + n = 0; + do { + n = 10 * n + to_digit(ch); + ch = *fmt++; + } while (is_digit(ch)); + if (ch == '$') { + nextarg = n; + goto rflag; + } + width = n; + goto reswitch; +#ifndef NO_FLOATING_POINT + case 'L': + flags |= LONGDBL; + goto rflag; +#endif + case 'h': + if (flags & SHORTINT) { + flags &= ~SHORTINT; + flags |= CHARINT; + } else + flags |= SHORTINT; + goto rflag; + case 'j': + flags |= INTMAXT; + goto rflag; + case 'l': + if (flags & LONGINT) { + flags &= ~LONGINT; + flags |= LLONGINT; + } else + flags |= LONGINT; + goto rflag; + case 'q': + flags |= LLONGINT; /* not necessarily */ + goto rflag; + case 't': + flags |= PTRDIFFT; + goto rflag; + case 'z': + flags |= SIZET; + goto rflag; + case 'C': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'c': + if (flags & LONGINT) + ADDTYPE(T_WINT); + else + ADDTYPE(T_INT); + break; + case 'D': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'd': + case 'i': + ADDSARG(); + break; +#ifndef NO_FLOATING_POINT + case 'a': + case 'A': + case 'e': + case 'E': + case 'f': + case 'g': + case 'G': + if (flags & LONGDBL) + ADDTYPE(T_LONG_DOUBLE); + else + ADDTYPE(T_DOUBLE); + break; +#endif /* !NO_FLOATING_POINT */ + case 'n': + if (flags & INTMAXT) + ADDTYPE(TP_INTMAXT); + else if (flags & PTRDIFFT) + ADDTYPE(TP_PTRDIFFT); + else if (flags & SIZET) + ADDTYPE(TP_SIZET); + else if (flags & LLONGINT) + ADDTYPE(TP_LLONG); + else if (flags & LONGINT) + ADDTYPE(TP_LONG); + else if (flags & SHORTINT) + ADDTYPE(TP_SHORT); + else if (flags & CHARINT) + ADDTYPE(TP_SCHAR); + else + ADDTYPE(TP_INT); + continue; /* no output */ + case 'O': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'o': + ADDUARG(); + break; + case 'p': + ADDTYPE(TP_VOID); + break; + case 'S': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 's': + if (flags & LONGINT) + ADDTYPE(TP_WCHAR); + else + ADDTYPE(TP_CHAR); + break; + case 'U': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'u': + case 'X': + case 'x': + ADDUARG(); + break; + default: /* "%?" prints ?, unless ? is NUL */ + if (ch == '\0') + goto done; + break; + } + } +done: + /* + * Build the argument table. + */ + if (tablemax >= STATIC_ARG_TBL_SIZE) { + *argtable = (union arg *) + malloc (sizeof (union arg) * (tablemax + 1)); + } + + (*argtable) [0].intarg = 0; + for (n = 1; n <= tablemax; n++) { + switch (typetable [n]) { + case T_UNUSED: /* whoops! */ + (*argtable) [n].intarg = va_arg (ap, int); + break; + case TP_SCHAR: + (*argtable) [n].pschararg = va_arg (ap, signed char *); + break; + case TP_SHORT: + (*argtable) [n].pshortarg = va_arg (ap, short *); + break; + case T_INT: + (*argtable) [n].intarg = va_arg (ap, int); + break; + case T_U_INT: + (*argtable) [n].uintarg = va_arg (ap, unsigned int); + break; + case TP_INT: + (*argtable) [n].pintarg = va_arg (ap, int *); + break; + case T_LONG: + (*argtable) [n].longarg = va_arg (ap, long); + break; + case T_U_LONG: + (*argtable) [n].ulongarg = va_arg (ap, unsigned long); + break; + case TP_LONG: + (*argtable) [n].plongarg = va_arg (ap, long *); + break; + case T_LLONG: + (*argtable) [n].longlongarg = va_arg (ap, long long); + break; + case T_U_LLONG: + (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); + break; + case TP_LLONG: + (*argtable) [n].plonglongarg = va_arg (ap, long long *); + break; + case T_PTRDIFFT: + (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); + break; + case TP_PTRDIFFT: + (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); + break; + case T_SIZET: + (*argtable) [n].sizearg = va_arg (ap, size_t); + break; + case TP_SIZET: + (*argtable) [n].psizearg = va_arg (ap, ssize_t *); + break; + case T_INTMAXT: + (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); + break; + case T_UINTMAXT: + (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); + break; + case TP_INTMAXT: + (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); + break; + case T_DOUBLE: +#ifndef NO_FLOATING_POINT + (*argtable) [n].doublearg = va_arg (ap, double); +#endif + break; + case T_LONG_DOUBLE: +#ifndef NO_FLOATING_POINT + (*argtable) [n].longdoublearg = va_arg (ap, long double); +#endif + break; + case TP_CHAR: + (*argtable) [n].pchararg = va_arg (ap, char *); + break; + case TP_VOID: + (*argtable) [n].pvoidarg = va_arg (ap, void *); + break; + case T_WINT: + (*argtable) [n].wintarg = va_arg (ap, wint_t); + break; + case TP_WCHAR: + (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); + break; + } + } + + if ((typetable != NULL) && (typetable != stattypetable)) + free (typetable); +} + +/* + * Increase the size of the type table. + */ +static void +__grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) +{ + enum typeid *const oldtable = *typetable; + const int oldsize = *tablesize; + enum typeid *newtable; + int n, newsize = oldsize * 2; + + if (newsize < nextarg + 1) + newsize = nextarg + 1; + if (oldsize == STATIC_ARG_TBL_SIZE) { + if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL) + abort(); /* XXX handle better */ + bcopy(oldtable, newtable, oldsize * sizeof(enum typeid)); + } else { + newtable = reallocf(oldtable, newsize * sizeof(enum typeid)); + if (newtable == NULL) + abort(); /* XXX handle better */ + } + for (n = oldsize; n < newsize; n++) + newtable[n] = T_UNUSED; + + *typetable = newtable; + *tablesize = newsize; +} + + +#ifndef NO_FLOATING_POINT + +static int +exponent(char *p0, int exp, int fmtch) +{ + char *p, *t; + char expbuf[MAXEXPDIG]; + + p = p0; + *p++ = fmtch; + if (exp < 0) { + exp = -exp; + *p++ = '-'; + } + else + *p++ = '+'; + t = expbuf + MAXEXPDIG; + if (exp > 9) { + do { + *--t = to_char(exp % 10); + } while ((exp /= 10) > 9); + *--t = to_char(exp); + for (; t < expbuf + MAXEXPDIG; *p++ = *t++); + } + else { + /* + * Exponents for decimal floating point conversions + * (%[eEgG]) must be at least two characters long, + * whereas exponents for hexadecimal conversions can + * be only one character long. + */ + if (fmtch == 'e' || fmtch == 'E') + *p++ = '0'; + *p++ = to_char(exp); + } + return (p - p0); +} +#endif /* !NO_FLOATING_POINT */ diff --git a/lib/libc/stdio/vfscanf.c b/lib/libc/stdio/vfscanf.c new file mode 100644 index 0000000..465ee0d --- /dev/null +++ b/lib/libc/stdio/vfscanf.c @@ -0,0 +1,1068 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vfscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <ctype.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> +#include <stddef.h> +#include <stdarg.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> +#include "un-namespace.h" + +#include "collate.h" +#include "libc_private.h" +#include "local.h" + +#ifndef NO_FLOATING_POINT +#include <locale.h> +#endif + +#define BUF 513 /* Maximum length of numeric string. */ + +/* + * Flags used during conversion. + */ +#define LONG 0x01 /* l: long or double */ +#define LONGDBL 0x02 /* L: long double */ +#define SHORT 0x04 /* h: short */ +#define SUPPRESS 0x08 /* *: suppress assignment */ +#define POINTER 0x10 /* p: void * (as hex) */ +#define NOSKIP 0x20 /* [ or c: do not skip blanks */ +#define LONGLONG 0x400 /* ll: long long (+ deprecated q: quad) */ +#define INTMAXT 0x800 /* j: intmax_t */ +#define PTRDIFFT 0x1000 /* t: ptrdiff_t */ +#define SIZET 0x2000 /* z: size_t */ +#define SHORTSHORT 0x4000 /* hh: char */ +#define UNSIGNED 0x8000 /* %[oupxX] conversions */ + +/* + * The following are used in integral conversions only: + * SIGNOK, NDIGITS, PFXOK, and NZDIGITS + */ +#define SIGNOK 0x40 /* +/- is (still) legal */ +#define NDIGITS 0x80 /* no digits detected */ +#define PFXOK 0x100 /* 0x prefix is (still) legal */ +#define NZDIGITS 0x200 /* no zero digits detected */ +#define HAVESIGN 0x10000 /* sign detected */ + +/* + * Conversion types. + */ +#define CT_CHAR 0 /* %c conversion */ +#define CT_CCL 1 /* %[...] conversion */ +#define CT_STRING 2 /* %s conversion */ +#define CT_INT 3 /* %[dioupxX] conversion */ +#define CT_FLOAT 4 /* %[efgEFG] conversion */ + +static const u_char *__sccl(char *, const u_char *); +#ifndef NO_FLOATING_POINT +static int parsefloat(FILE *, char *, char *); +#endif + +int __scanfdebug = 0; + +__weak_reference(__vfscanf, vfscanf); + +/* + * __vfscanf - MT-safe version + */ +int +__vfscanf(FILE *fp, char const *fmt0, va_list ap) +{ + int ret; + + FLOCKFILE(fp); + ret = __svfscanf(fp, fmt0, ap); + FUNLOCKFILE(fp); + return (ret); +} + +/* + * __svfscanf - non-MT-safe version of __vfscanf + */ +int +__svfscanf(FILE *fp, const char *fmt0, va_list ap) +{ + const u_char *fmt = (const u_char *)fmt0; + int c; /* character from format, or conversion */ + size_t width; /* field width, or 0 */ + char *p; /* points into all kinds of strings */ + int n; /* handy integer */ + int flags; /* flags as defined above */ + char *p0; /* saves original value of p when necessary */ + int nassigned; /* number of fields assigned */ + int nconversions; /* number of conversions */ + int nread; /* number of characters consumed from fp */ + int base; /* base argument to conversion function */ + char ccltab[256]; /* character class table for %[...] */ + char buf[BUF]; /* buffer for numeric and mb conversions */ + wchar_t *wcp; /* handy wide character pointer */ + size_t nconv; /* length of multibyte sequence converted */ + static const mbstate_t initial; + mbstate_t mbs; + + /* `basefix' is used to avoid `if' tests in the integer scanner */ + static short basefix[17] = + { 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }; + + ORIENT(fp, -1); + + nassigned = 0; + nconversions = 0; + nread = 0; + for (;;) { + c = *fmt++; + if (c == 0) + return (nassigned); + if (isspace(c)) { + while ((fp->_r > 0 || __srefill(fp) == 0) && isspace(*fp->_p)) + nread++, fp->_r--, fp->_p++; + continue; + } + if (c != '%') + goto literal; + width = 0; + flags = 0; + /* + * switch on the format. continue if done; + * break once format type is derived. + */ +again: c = *fmt++; + switch (c) { + case '%': +literal: + if (fp->_r <= 0 && __srefill(fp)) + goto input_failure; + if (*fp->_p != c) + goto match_failure; + fp->_r--, fp->_p++; + nread++; + continue; + + case '*': + flags |= SUPPRESS; + goto again; + case 'j': + flags |= INTMAXT; + goto again; + case 'l': + if (flags & LONG) { + flags &= ~LONG; + flags |= LONGLONG; + } else + flags |= LONG; + goto again; + case 'q': + flags |= LONGLONG; /* not quite */ + goto again; + case 't': + flags |= PTRDIFFT; + goto again; + case 'z': + flags |= SIZET; + goto again; + case 'L': + flags |= LONGDBL; + goto again; + case 'h': + if (flags & SHORT) { + flags &= ~SHORT; + flags |= SHORTSHORT; + } else + flags |= SHORT; + goto again; + + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + width = width * 10 + c - '0'; + goto again; + + /* + * Conversions. + */ + case 'd': + c = CT_INT; + base = 10; + break; + + case 'i': + c = CT_INT; + base = 0; + break; + + case 'o': + c = CT_INT; + flags |= UNSIGNED; + base = 8; + break; + + case 'u': + c = CT_INT; + flags |= UNSIGNED; + base = 10; + break; + + case 'X': + case 'x': + flags |= PFXOK; /* enable 0x prefixing */ + c = CT_INT; + flags |= UNSIGNED; + base = 16; + break; + +#ifndef NO_FLOATING_POINT + case 'A': case 'E': case 'F': case 'G': + case 'a': case 'e': case 'f': case 'g': + c = CT_FLOAT; + break; +#endif + + case 'S': + flags |= LONG; + /* FALLTHROUGH */ + case 's': + c = CT_STRING; + break; + + case '[': + fmt = __sccl(ccltab, fmt); + flags |= NOSKIP; + c = CT_CCL; + break; + + case 'C': + flags |= LONG; + /* FALLTHROUGH */ + case 'c': + flags |= NOSKIP; + c = CT_CHAR; + break; + + case 'p': /* pointer format is like hex */ + flags |= POINTER | PFXOK; + c = CT_INT; /* assumes sizeof(uintmax_t) */ + flags |= UNSIGNED; /* >= sizeof(uintptr_t) */ + base = 16; + break; + + case 'n': + nconversions++; + if (flags & SUPPRESS) /* ??? */ + continue; + if (flags & SHORTSHORT) + *va_arg(ap, char *) = nread; + else if (flags & SHORT) + *va_arg(ap, short *) = nread; + else if (flags & LONG) + *va_arg(ap, long *) = nread; + else if (flags & LONGLONG) + *va_arg(ap, long long *) = nread; + else if (flags & INTMAXT) + *va_arg(ap, intmax_t *) = nread; + else if (flags & SIZET) + *va_arg(ap, size_t *) = nread; + else if (flags & PTRDIFFT) + *va_arg(ap, ptrdiff_t *) = nread; + else + *va_arg(ap, int *) = nread; + continue; + + default: + goto match_failure; + + /* + * Disgusting backwards compatibility hack. XXX + */ + case '\0': /* compat */ + return (EOF); + } + + /* + * We have a conversion that requires input. + */ + if (fp->_r <= 0 && __srefill(fp)) + goto input_failure; + + /* + * Consume leading white space, except for formats + * that suppress this. + */ + if ((flags & NOSKIP) == 0) { + while (isspace(*fp->_p)) { + nread++; + if (--fp->_r > 0) + fp->_p++; + else if (__srefill(fp)) + goto input_failure; + } + /* + * Note that there is at least one character in + * the buffer, so conversions that do not set NOSKIP + * ca no longer result in an input failure. + */ + } + + /* + * Do the conversion. + */ + switch (c) { + + case CT_CHAR: + /* scan arbitrary characters (sets NOSKIP) */ + if (width == 0) + width = 1; + if (flags & LONG) { + if ((flags & SUPPRESS) == 0) + wcp = va_arg(ap, wchar_t *); + else + wcp = NULL; + n = 0; + while (width != 0) { + if (n == MB_CUR_MAX) { + fp->_flags |= __SERR; + goto input_failure; + } + buf[n++] = *fp->_p; + fp->_p++; + fp->_r--; + mbs = initial; + nconv = mbrtowc(wcp, buf, n, &mbs); + if (nconv == (size_t)-1) { + fp->_flags |= __SERR; + goto input_failure; + } + if (nconv == 0 && !(flags & SUPPRESS)) + *wcp = L'\0'; + if (nconv != (size_t)-2) { + nread += n; + width--; + if (!(flags & SUPPRESS)) + wcp++; + n = 0; + } + if (fp->_r <= 0 && __srefill(fp)) { + if (n != 0) { + fp->_flags |= __SERR; + goto input_failure; + } + break; + } + } + if (!(flags & SUPPRESS)) + nassigned++; + } else if (flags & SUPPRESS) { + size_t sum = 0; + for (;;) { + if ((n = fp->_r) < width) { + sum += n; + width -= n; + fp->_p += n; + if (__srefill(fp)) { + if (sum == 0) + goto input_failure; + break; + } + } else { + sum += width; + fp->_r -= width; + fp->_p += width; + break; + } + } + nread += sum; + } else { + size_t r = __fread((void *)va_arg(ap, char *), 1, + width, fp); + + if (r == 0) + goto input_failure; + nread += r; + nassigned++; + } + nconversions++; + break; + + case CT_CCL: + /* scan a (nonempty) character class (sets NOSKIP) */ + if (width == 0) + width = (size_t)~0; /* `infinity' */ + /* take only those things in the class */ + if (flags & LONG) { + wchar_t twc; + int nchars; + + if ((flags & SUPPRESS) == 0) + wcp = va_arg(ap, wchar_t *); + else + wcp = &twc; + n = 0; + nchars = 0; + while (width != 0) { + if (n == MB_CUR_MAX) { + fp->_flags |= __SERR; + goto input_failure; + } + buf[n++] = *fp->_p; + fp->_p++; + fp->_r--; + mbs = initial; + nconv = mbrtowc(wcp, buf, n, &mbs); + if (nconv == (size_t)-1) { + fp->_flags |= __SERR; + goto input_failure; + } + if (nconv == 0) + *wcp = L'\0'; + if (nconv != (size_t)-2) { + if (wctob(*wcp) != EOF && + !ccltab[wctob(*wcp)]) { + while (n != 0) { + n--; + __ungetc(buf[n], + fp); + } + break; + } + nread += n; + width--; + if (!(flags & SUPPRESS)) + wcp++; + nchars++; + n = 0; + } + if (fp->_r <= 0 && __srefill(fp)) { + if (n != 0) { + fp->_flags |= __SERR; + goto input_failure; + } + break; + } + } + if (n != 0) { + fp->_flags |= __SERR; + goto input_failure; + } + n = nchars; + if (n == 0) + goto match_failure; + if (!(flags & SUPPRESS)) { + *wcp = L'\0'; + nassigned++; + } + } else if (flags & SUPPRESS) { + n = 0; + while (ccltab[*fp->_p]) { + n++, fp->_r--, fp->_p++; + if (--width == 0) + break; + if (fp->_r <= 0 && __srefill(fp)) { + if (n == 0) + goto input_failure; + break; + } + } + if (n == 0) + goto match_failure; + } else { + p0 = p = va_arg(ap, char *); + while (ccltab[*fp->_p]) { + fp->_r--; + *p++ = *fp->_p++; + if (--width == 0) + break; + if (fp->_r <= 0 && __srefill(fp)) { + if (p == p0) + goto input_failure; + break; + } + } + n = p - p0; + if (n == 0) + goto match_failure; + *p = 0; + nassigned++; + } + nread += n; + nconversions++; + break; + + case CT_STRING: + /* like CCL, but zero-length string OK, & no NOSKIP */ + if (width == 0) + width = (size_t)~0; + if (flags & LONG) { + wchar_t twc; + + if ((flags & SUPPRESS) == 0) + wcp = va_arg(ap, wchar_t *); + else + wcp = &twc; + n = 0; + while (!isspace(*fp->_p) && width != 0) { + if (n == MB_CUR_MAX) { + fp->_flags |= __SERR; + goto input_failure; + } + buf[n++] = *fp->_p; + fp->_p++; + fp->_r--; + mbs = initial; + nconv = mbrtowc(wcp, buf, n, &mbs); + if (nconv == (size_t)-1) { + fp->_flags |= __SERR; + goto input_failure; + } + if (nconv == 0) + *wcp = L'\0'; + if (nconv != (size_t)-2) { + if (iswspace(*wcp)) { + while (n != 0) { + n--; + __ungetc(buf[n], + fp); + } + break; + } + nread += n; + width--; + if (!(flags & SUPPRESS)) + wcp++; + n = 0; + } + if (fp->_r <= 0 && __srefill(fp)) { + if (n != 0) { + fp->_flags |= __SERR; + goto input_failure; + } + break; + } + } + if (!(flags & SUPPRESS)) { + *wcp = L'\0'; + nassigned++; + } + } else if (flags & SUPPRESS) { + n = 0; + while (!isspace(*fp->_p)) { + n++, fp->_r--, fp->_p++; + if (--width == 0) + break; + if (fp->_r <= 0 && __srefill(fp)) + break; + } + nread += n; + } else { + p0 = p = va_arg(ap, char *); + while (!isspace(*fp->_p)) { + fp->_r--; + *p++ = *fp->_p++; + if (--width == 0) + break; + if (fp->_r <= 0 && __srefill(fp)) + break; + } + *p = 0; + nread += p - p0; + nassigned++; + } + nconversions++; + continue; + + case CT_INT: + /* scan an integer as if by the conversion function */ +#ifdef hardway + if (width == 0 || width > sizeof(buf) - 1) + width = sizeof(buf) - 1; +#else + /* size_t is unsigned, hence this optimisation */ + if (--width > sizeof(buf) - 2) + width = sizeof(buf) - 2; + width++; +#endif + flags |= SIGNOK | NDIGITS | NZDIGITS; + for (p = buf; width; width--) { + c = *fp->_p; + /* + * Switch on the character; `goto ok' + * if we accept it as a part of number. + */ + switch (c) { + + /* + * The digit 0 is always legal, but is + * special. For %i conversions, if no + * digits (zero or nonzero) have been + * scanned (only signs), we will have + * base==0. In that case, we should set + * it to 8 and enable 0x prefixing. + * Also, if we have not scanned zero digits + * before this, do not turn off prefixing + * (someone else will turn it off if we + * have scanned any nonzero digits). + */ + case '0': + if (base == 0) { + base = 8; + flags |= PFXOK; + } + if (flags & NZDIGITS) + flags &= ~(SIGNOK|NZDIGITS|NDIGITS); + else + flags &= ~(SIGNOK|PFXOK|NDIGITS); + goto ok; + + /* 1 through 7 always legal */ + case '1': case '2': case '3': + case '4': case '5': case '6': case '7': + base = basefix[base]; + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* digits 8 and 9 ok iff decimal or hex */ + case '8': case '9': + base = basefix[base]; + if (base <= 8) + break; /* not legal here */ + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* letters ok iff hex */ + case 'A': case 'B': case 'C': + case 'D': case 'E': case 'F': + case 'a': case 'b': case 'c': + case 'd': case 'e': case 'f': + /* no need to fix base here */ + if (base <= 10) + break; /* not legal here */ + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* sign ok only as first character */ + case '+': case '-': + if (flags & SIGNOK) { + flags &= ~SIGNOK; + flags |= HAVESIGN; + goto ok; + } + break; + + /* + * x ok iff flag still set & 2nd char (or + * 3rd char if we have a sign). + */ + case 'x': case 'X': + if (flags & PFXOK && p == + buf + 1 + !!(flags & HAVESIGN)) { + base = 16; /* if %i */ + flags &= ~PFXOK; + goto ok; + } + break; + } + + /* + * If we got here, c is not a legal character + * for a number. Stop accumulating digits. + */ + break; + ok: + /* + * c is legal: store it and look at the next. + */ + *p++ = c; + if (--fp->_r > 0) + fp->_p++; + else if (__srefill(fp)) + break; /* EOF */ + } + /* + * If we had only a sign, it is no good; push + * back the sign. If the number ends in `x', + * it was [sign] '0' 'x', so push back the x + * and treat it as [sign] '0'. + */ + if (flags & NDIGITS) { + if (p > buf) + (void) __ungetc(*(u_char *)--p, fp); + goto match_failure; + } + c = ((u_char *)p)[-1]; + if (c == 'x' || c == 'X') { + --p; + (void) __ungetc(c, fp); + } + if ((flags & SUPPRESS) == 0) { + uintmax_t res; + + *p = 0; + if ((flags & UNSIGNED) == 0) + res = strtoimax(buf, (char **)NULL, base); + else + res = strtoumax(buf, (char **)NULL, base); + if (flags & POINTER) + *va_arg(ap, void **) = + (void *)(uintptr_t)res; + else if (flags & SHORTSHORT) + *va_arg(ap, char *) = res; + else if (flags & SHORT) + *va_arg(ap, short *) = res; + else if (flags & LONG) + *va_arg(ap, long *) = res; + else if (flags & LONGLONG) + *va_arg(ap, long long *) = res; + else if (flags & INTMAXT) + *va_arg(ap, intmax_t *) = res; + else if (flags & PTRDIFFT) + *va_arg(ap, ptrdiff_t *) = res; + else if (flags & SIZET) + *va_arg(ap, size_t *) = res; + else + *va_arg(ap, int *) = res; + nassigned++; + } + nread += p - buf; + nconversions++; + break; + +#ifndef NO_FLOATING_POINT + case CT_FLOAT: + /* scan a floating point number as if by strtod */ + if (width == 0 || width > sizeof(buf) - 1) + width = sizeof(buf) - 1; + if ((width = parsefloat(fp, buf, buf + width)) == 0) + goto match_failure; + if ((flags & SUPPRESS) == 0) { + if (flags & LONGDBL) { + long double res = strtold(buf, &p); + *va_arg(ap, long double *) = res; + } else if (flags & LONG) { + double res = strtod(buf, &p); + *va_arg(ap, double *) = res; + } else { + float res = strtof(buf, &p); + *va_arg(ap, float *) = res; + } + if (__scanfdebug && p - buf != width) + abort(); + nassigned++; + } + nread += width; + nconversions++; + break; +#endif /* !NO_FLOATING_POINT */ + } + } +input_failure: + return (nconversions != 0 ? nassigned : EOF); +match_failure: + return (nassigned); +} + +/* + * Fill in the given table from the scanset at the given format + * (just after `['). Return a pointer to the character past the + * closing `]'. The table has a 1 wherever characters should be + * considered part of the scanset. + */ +static const u_char * +__sccl(tab, fmt) + char *tab; + const u_char *fmt; +{ + int c, n, v, i; + + /* first `clear' the whole table */ + c = *fmt++; /* first char hat => negated scanset */ + if (c == '^') { + v = 1; /* default => accept */ + c = *fmt++; /* get new first char */ + } else + v = 0; /* default => reject */ + + /* XXX: Will not work if sizeof(tab*) > sizeof(char) */ + (void) memset(tab, v, 256); + + if (c == 0) + return (fmt - 1);/* format ended before closing ] */ + + /* + * Now set the entries corresponding to the actual scanset + * to the opposite of the above. + * + * The first character may be ']' (or '-') without being special; + * the last character may be '-'. + */ + v = 1 - v; + for (;;) { + tab[c] = v; /* take character c */ +doswitch: + n = *fmt++; /* and examine the next */ + switch (n) { + + case 0: /* format ended too soon */ + return (fmt - 1); + + case '-': + /* + * A scanset of the form + * [01+-] + * is defined as `the digit 0, the digit 1, + * the character +, the character -', but + * the effect of a scanset such as + * [a-zA-Z0-9] + * is implementation defined. The V7 Unix + * scanf treats `a-z' as `the letters a through + * z', but treats `a-a' as `the letter a, the + * character -, and the letter a'. + * + * For compatibility, the `-' is not considerd + * to define a range if the character following + * it is either a close bracket (required by ANSI) + * or is not numerically greater than the character + * we just stored in the table (c). + */ + n = *fmt; + if (n == ']' + || (__collate_load_error ? n < c : + __collate_range_cmp (n, c) < 0 + ) + ) { + c = '-'; + break; /* resume the for(;;) */ + } + fmt++; + /* fill in the range */ + if (__collate_load_error) { + do { + tab[++c] = v; + } while (c < n); + } else { + for (i = 0; i < 256; i ++) + if ( __collate_range_cmp (c, i) < 0 + && __collate_range_cmp (i, n) <= 0 + ) + tab[i] = v; + } +#if 1 /* XXX another disgusting compatibility hack */ + c = n; + /* + * Alas, the V7 Unix scanf also treats formats + * such as [a-c-e] as `the letters a through e'. + * This too is permitted by the standard.... + */ + goto doswitch; +#else + c = *fmt++; + if (c == 0) + return (fmt - 1); + if (c == ']') + return (fmt); +#endif + break; + + case ']': /* end of scanset */ + return (fmt); + + default: /* just another character */ + c = n; + break; + } + } + /* NOTREACHED */ +} + +#ifndef NO_FLOATING_POINT +static int +parsefloat(FILE *fp, char *buf, char *end) +{ + char *commit, *p; + int infnanpos = 0; + enum { + S_START, S_GOTSIGN, S_INF, S_NAN, S_MAYBEHEX, + S_DIGITS, S_FRAC, S_EXP, S_EXPDIGITS + } state = S_START; + unsigned char c; + char decpt = *localeconv()->decimal_point; + _Bool gotmantdig = 0, ishex = 0; + + /* + * We set commit = p whenever the string we have read so far + * constitutes a valid representation of a floating point + * number by itself. At some point, the parse will complete + * or fail, and we will ungetc() back to the last commit point. + * To ensure that the file offset gets updated properly, it is + * always necessary to read at least one character that doesn't + * match; thus, we can't short-circuit "infinity" or "nan(...)". + */ + commit = buf - 1; + for (p = buf; p < end; ) { + c = *fp->_p; +reswitch: + switch (state) { + case S_START: + state = S_GOTSIGN; + if (c == '-' || c == '+') + break; + else + goto reswitch; + case S_GOTSIGN: + switch (c) { + case '0': + state = S_MAYBEHEX; + commit = p; + break; + case 'I': + case 'i': + state = S_INF; + break; + case 'N': + case 'n': + state = S_NAN; + break; + default: + state = S_DIGITS; + goto reswitch; + } + break; + case S_INF: + if (infnanpos > 6 || + (c != "nfinity"[infnanpos] && + c != "NFINITY"[infnanpos])) + goto parsedone; + if (infnanpos == 1 || infnanpos == 6) + commit = p; /* inf or infinity */ + infnanpos++; + break; + case S_NAN: + switch (infnanpos) { + case -1: /* XXX kludge to deal with nan(...) */ + goto parsedone; + case 0: + if (c != 'A' && c != 'a') + goto parsedone; + break; + case 1: + if (c != 'N' && c != 'n') + goto parsedone; + else + commit = p; + break; + case 2: + if (c != '(') + goto parsedone; + break; + default: + if (c == ')') { + commit = p; + infnanpos = -2; + } else if (!isalnum(c) && c != '_') + goto parsedone; + break; + } + infnanpos++; + break; + case S_MAYBEHEX: + state = S_DIGITS; + if (c == 'X' || c == 'x') { + ishex = 1; + break; + } else { /* we saw a '0', but no 'x' */ + gotmantdig = 1; + goto reswitch; + } + case S_DIGITS: + if ((ishex && isxdigit(c)) || isdigit(c)) + gotmantdig = 1; + else { + state = S_FRAC; + if (c != decpt) + goto reswitch; + } + if (gotmantdig) + commit = p; + break; + case S_FRAC: + if (((c == 'E' || c == 'e') && !ishex) || + ((c == 'P' || c == 'p') && ishex)) { + if (!gotmantdig) + goto parsedone; + else + state = S_EXP; + } else if ((ishex && isxdigit(c)) || isdigit(c)) { + commit = p; + gotmantdig = 1; + } else + goto parsedone; + break; + case S_EXP: + state = S_EXPDIGITS; + if (c == '-' || c == '+') + break; + else + goto reswitch; + case S_EXPDIGITS: + if (isdigit(c)) + commit = p; + else + goto parsedone; + break; + default: + abort(); + } + *p++ = c; + if (--fp->_r > 0) + fp->_p++; + else if (__srefill(fp)) + break; /* EOF */ + } + +parsedone: + while (commit < --p) + __ungetc(*(u_char *)p, fp); + *++commit = '\0'; + return (commit - buf); +} +#endif diff --git a/lib/libc/stdio/vfwprintf.c b/lib/libc/stdio/vfwprintf.c new file mode 100644 index 0000000..375d202 --- /dev/null +++ b/lib/libc/stdio/vfwprintf.c @@ -0,0 +1,1648 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Actual wprintf innards. + * + * Avoid making gratuitous changes to this source file; it should be kept + * as close as possible to vfprintf.c for ease of maintenance. + */ + +#include "namespace.h" +#include <sys/types.h> + +#include <ctype.h> +#include <limits.h> +#include <locale.h> +#include <stdarg.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> +#include "un-namespace.h" + +#include "libc_private.h" +#include "local.h" +#include "fvwrite.h" + +union arg { + int intarg; + u_int uintarg; + long longarg; + u_long ulongarg; + long long longlongarg; + unsigned long long ulonglongarg; + ptrdiff_t ptrdiffarg; + size_t sizearg; + intmax_t intmaxarg; + uintmax_t uintmaxarg; + void *pvoidarg; + char *pchararg; + signed char *pschararg; + short *pshortarg; + int *pintarg; + long *plongarg; + long long *plonglongarg; + ptrdiff_t *pptrdiffarg; + size_t *psizearg; + intmax_t *pintmaxarg; +#ifndef NO_FLOATING_POINT + double doublearg; + long double longdoublearg; +#endif + wint_t wintarg; + wchar_t *pwchararg; +}; + +/* + * Type ids for argument type table. + */ +enum typeid { + T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT, + T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG, + T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET, + T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR, + T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR +}; + +static int __sbprintf(FILE *, const wchar_t *, va_list); +static wint_t __xfputwc(wchar_t, FILE *); +static wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const char *, int, + char, const char *); +static wchar_t *__ultoa(u_long, wchar_t *, int, int, const char *, int, + char, const char *); +static wchar_t *__mbsconv(char *, int); +static void __find_arguments(const wchar_t *, va_list, union arg **); +static void __grow_type_table(int, enum typeid **, int *); + +/* + * Helper function for `fprintf to unbuffered unix file': creates a + * temporary buffer. We only work on write-only files; this avoids + * worries about ungetc buffers and so forth. + */ +static int +__sbprintf(FILE *fp, const wchar_t *fmt, va_list ap) +{ + int ret; + FILE fake; + unsigned char buf[BUFSIZ]; + + /* copy the important variables */ + fake._flags = fp->_flags & ~__SNBF; + fake._file = fp->_file; + fake._cookie = fp->_cookie; + fake._write = fp->_write; + fake._extra = fp->_extra; + + /* set up the buffer */ + fake._bf._base = fake._p = buf; + fake._bf._size = fake._w = sizeof(buf); + fake._lbfsize = 0; /* not actually used, but Just In Case */ + + /* do the work, then copy any error status */ + ret = __vfwprintf(&fake, fmt, ap); + if (ret >= 0 && __fflush(&fake)) + ret = WEOF; + if (fake._flags & __SERR) + fp->_flags |= __SERR; + return (ret); +} + +/* + * Like __fputwc, but handles fake string (__SSTR) files properly. + * File must already be locked. + */ +static wint_t +__xfputwc(wchar_t wc, FILE *fp) +{ + static const mbstate_t initial; + mbstate_t mbs; + char buf[MB_LEN_MAX]; + struct __suio uio; + struct __siov iov; + size_t len; + + if ((fp->_flags & __SSTR) == 0) + return (__fputwc(wc, fp)); + + mbs = initial; + if ((len = wcrtomb(buf, wc, &mbs)) == (size_t)-1) { + fp->_flags |= __SERR; + return (WEOF); + } + uio.uio_iov = &iov; + uio.uio_resid = len; + uio.uio_iovcnt = 1; + iov.iov_base = buf; + iov.iov_len = len; + return (__sfvwrite(fp, &uio) != EOF ? (wint_t)wc : WEOF); +} + +/* + * Macros for converting digits to letters and vice versa + */ +#define to_digit(c) ((c) - '0') +#define is_digit(c) ((unsigned)to_digit(c) <= 9) +#define to_char(n) ((n) + '0') + +/* + * Convert an unsigned long to ASCII for printf purposes, returning + * a pointer to the first character of the string representation. + * Octal numbers can be forced to have a leading zero; hex numbers + * use the given digits. + */ +static wchar_t * +__ultoa(u_long val, wchar_t *endp, int base, int octzero, const char *xdigs, + int needgrp, char thousep, const char *grp) +{ + wchar_t *cp = endp; + long sval; + int ndig; + + /* + * Handle the three cases separately, in the hope of getting + * better/faster code. + */ + switch (base) { + case 10: + if (val < 10) { /* many numbers are 1 digit */ + *--cp = to_char(val); + return (cp); + } + ndig = 0; + /* + * On many machines, unsigned arithmetic is harder than + * signed arithmetic, so we do at most one unsigned mod and + * divide; this is sufficient to reduce the range of + * the incoming value to where signed arithmetic works. + */ + if (val > LONG_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && ndig == *grp && *grp != CHAR_MAX + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + if (octzero && *cp != '0') + *--cp = '0'; + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: /* oops */ + abort(); + } + return (cp); +} + +/* Identical to __ultoa, but for intmax_t. */ +static wchar_t * +__ujtoa(uintmax_t val, wchar_t *endp, int base, int octzero, + const char *xdigs, int needgrp, char thousep, const char *grp) +{ + wchar_t *cp = endp; + intmax_t sval; + int ndig; + + /* quick test for small values; __ultoa is typically much faster */ + /* (perhaps instead we should run until small, then call __ultoa?) */ + if (val <= ULONG_MAX) + return (__ultoa((u_long)val, endp, base, octzero, xdigs, + needgrp, thousep, grp)); + switch (base) { + case 10: + if (val < 10) { + *--cp = to_char(val % 10); + return (cp); + } + ndig = 0; + if (val > INTMAX_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && *grp != CHAR_MAX && ndig == *grp + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + if (octzero && *cp != '0') + *--cp = '0'; + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: + abort(); + } + return (cp); +} + +/* + * Convert a multibyte character string argument for the %s format to a wide + * string representation. ``prec'' specifies the maximum number of bytes + * to output. If ``prec'' is greater than or equal to zero, we can't assume + * that the multibyte char. string ends in a null character. + */ +static wchar_t * +__mbsconv(char *mbsarg, int prec) +{ + static const mbstate_t initial; + mbstate_t mbs; + wchar_t *convbuf, *wcp; + const char *p; + size_t insize, nchars, nconv; + + if (mbsarg == NULL) + return (NULL); + + /* + * Supplied argument is a multibyte string; convert it to wide + * characters first. + */ + if (prec >= 0) { + /* + * String is not guaranteed to be NUL-terminated. Find the + * number of characters to print. + */ + p = mbsarg; + insize = nchars = 0; + mbs = initial; + while (nchars != (size_t)prec) { + nconv = mbrlen(p, MB_CUR_MAX, &mbs); + if (nconv == 0 || nconv == (size_t)-1 || + nconv == (size_t)-2) + break; + p += nconv; + nchars++; + insize += nconv; + } + if (nconv == (size_t)-1 || nconv == (size_t)-2) + return (NULL); + } else + insize = strlen(mbsarg); + + /* + * Allocate buffer for the result and perform the conversion, + * converting at most `size' bytes of the input multibyte string to + * wide characters for printing. + */ + convbuf = malloc((insize + 1) * sizeof(*convbuf)); + if (convbuf == NULL) + return (NULL); + wcp = convbuf; + p = mbsarg; + mbs = initial; + while (insize != 0) { + nconv = mbrtowc(wcp, p, insize, &mbs); + if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) + break; + wcp++; + p += nconv; + insize -= nconv; + } + if (nconv == (size_t)-1 || nconv == (size_t)-2) { + free(convbuf); + return (NULL); + } + *wcp = L'\0'; + + return (convbuf); +} + +/* + * MT-safe version + */ +int +vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) + +{ + int ret; + + FLOCKFILE(fp); + ret = __vfwprintf(fp, fmt0, ap); + FUNLOCKFILE(fp); + return (ret); +} + +#ifndef NO_FLOATING_POINT + +#define dtoa __dtoa +#define freedtoa __freedtoa + +#include <float.h> +#include <math.h> +#include "floatio.h" +#include "gdtoa.h" + +#define DEFPREC 6 + +static int exponent(wchar_t *, int, wchar_t); + +#endif /* !NO_FLOATING_POINT */ + +/* + * The size of the buffer we use as scratch space for integer + * conversions, among other things. Technically, we would need the + * most space for base 10 conversions with thousands' grouping + * characters between each pair of digits. 100 bytes is a + * conservative overestimate even for a 128-bit uintmax_t. + */ +#define BUF 100 + +#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ + +/* + * Flags used during conversion. + */ +#define ALT 0x001 /* alternate form */ +#define LADJUST 0x004 /* left adjustment */ +#define LONGDBL 0x008 /* long double */ +#define LONGINT 0x010 /* long integer */ +#define LLONGINT 0x020 /* long long integer */ +#define SHORTINT 0x040 /* short integer */ +#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ +#define FPT 0x100 /* Floating point number */ +#define GROUPING 0x200 /* use grouping ("'" flag) */ + /* C99 additional size modifiers: */ +#define SIZET 0x400 /* size_t */ +#define PTRDIFFT 0x800 /* ptrdiff_t */ +#define INTMAXT 0x1000 /* intmax_t */ +#define CHARINT 0x2000 /* print char using int format */ + +/* + * Non-MT-safe version + */ +int +__vfwprintf(FILE *fp, const wchar_t *fmt0, va_list ap) +{ + wchar_t *fmt; /* format string */ + wchar_t ch; /* character from fmt */ + int n, n2, n3; /* handy integer (short term usage) */ + wchar_t *cp; /* handy char pointer (short term usage) */ + int flags; /* flags as above */ + int ret; /* return value accumulator */ + int width; /* width from format (%8d), or 0 */ + int prec; /* precision from format; <0 for N/A */ + wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ + char thousands_sep; /* locale specific thousands separator */ + const char *grouping; /* locale specific numeric grouping rules */ +#ifndef NO_FLOATING_POINT + /* + * We can decompose the printed representation of floating + * point numbers into several parts, some of which may be empty: + * + * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ + * A B ---C--- D E F + * + * A: 'sign' holds this value if present; '\0' otherwise + * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal + * C: cp points to the string MMMNNN. Leading and trailing + * zeros are not in the string and must be added. + * D: expchar holds this character; '\0' if no exponent, e.g. %f + * F: at least two digits for decimal, at least one digit for hex + */ + char *decimal_point; /* locale specific decimal point */ + int signflag; /* true if float is negative */ + union { /* floating point arguments %[aAeEfFgG] */ + double dbl; + long double ldbl; + } fparg; + int expt; /* integer value of exponent */ + char expchar; /* exponent character: [eEpP\0] */ + char *dtoaend; /* pointer to end of converted digits */ + int expsize; /* character count for expstr */ + int lead; /* sig figs before decimal or group sep */ + int ndig; /* actual number of digits returned by dtoa */ + wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ + char *dtoaresult; /* buffer allocated by dtoa */ + int nseps; /* number of group separators with ' */ + int nrepeats; /* number of repeats of the last group */ +#endif + u_long ulval; /* integer arguments %[diouxX] */ + uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ + int base; /* base for [diouxX] conversion */ + int dprec; /* a copy of prec if [diouxX], 0 otherwise */ + int realsz; /* field size expanded by dprec, sign, etc */ + int size; /* size of converted field or string */ + int prsize; /* max size of printed field */ + const char *xdigs; /* digits for [xX] conversion */ + wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */ + wchar_t ox[2]; /* space for 0x hex-prefix */ + union arg *argtable; /* args, built due to positional arg */ + union arg statargtable [STATIC_ARG_TBL_SIZE]; + int nextarg; /* 1-based argument index */ + va_list orgap; /* original argument pointer */ + wchar_t *convbuf; /* multibyte to wide conversion result */ + + /* + * Choose PADSIZE to trade efficiency vs. size. If larger printf + * fields occur frequently, increase PADSIZE and make the initialisers + * below longer. + */ +#define PADSIZE 16 /* pad chunk size */ + static wchar_t blanks[PADSIZE] = + {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; + static wchar_t zeroes[PADSIZE] = + {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; + + static const char xdigs_lower[16] = "0123456789abcdef"; + static const char xdigs_upper[16] = "0123456789ABCDEF"; + + /* + * BEWARE, these `goto error' on error, PRINT uses `n2' and + * PAD uses `n'. + */ +#define PRINT(ptr, len) do { \ + for (n3 = 0; n3 < (len); n3++) \ + __xfputwc((ptr)[n3], fp); \ +} while (0) +#define PAD(howmany, with) do { \ + if ((n = (howmany)) > 0) { \ + while (n > PADSIZE) { \ + PRINT(with, PADSIZE); \ + n -= PADSIZE; \ + } \ + PRINT(with, n); \ + } \ +} while (0) +#define PRINTANDPAD(p, ep, len, with) do { \ + n2 = (ep) - (p); \ + if (n2 > (len)) \ + n2 = (len); \ + if (n2 > 0) \ + PRINT((p), n2); \ + PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ +} while(0) + + /* + * Get the argument indexed by nextarg. If the argument table is + * built, use it to get the argument. If its not, get the next + * argument (and arguments must be gotten sequentially). + */ +#define GETARG(type) \ + ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ + (nextarg++, va_arg(ap, type))) + + /* + * To extend shorts properly, we need both signed and unsigned + * argument extraction methods. + */ +#define SARG() \ + (flags&LONGINT ? GETARG(long) : \ + flags&SHORTINT ? (long)(short)GETARG(int) : \ + flags&CHARINT ? (long)(signed char)GETARG(int) : \ + (long)GETARG(int)) +#define UARG() \ + (flags&LONGINT ? GETARG(u_long) : \ + flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ + flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ + (u_long)GETARG(u_int)) +#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) +#define SJARG() \ + (flags&INTMAXT ? GETARG(intmax_t) : \ + flags&SIZET ? (intmax_t)GETARG(size_t) : \ + flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ + (intmax_t)GETARG(long long)) +#define UJARG() \ + (flags&INTMAXT ? GETARG(uintmax_t) : \ + flags&SIZET ? (uintmax_t)GETARG(size_t) : \ + flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ + (uintmax_t)GETARG(unsigned long long)) + + /* + * Get * arguments, including the form *nn$. Preserve the nextarg + * that the argument can be gotten once the type is determined. + */ +#define GETASTER(val) \ + n2 = 0; \ + cp = fmt; \ + while (is_digit(*cp)) { \ + n2 = 10 * n2 + to_digit(*cp); \ + cp++; \ + } \ + if (*cp == '$') { \ + int hold = nextarg; \ + if (argtable == NULL) { \ + argtable = statargtable; \ + __find_arguments (fmt0, orgap, &argtable); \ + } \ + nextarg = n2; \ + val = GETARG (int); \ + nextarg = hold; \ + fmt = ++cp; \ + } else { \ + val = GETARG (int); \ + } + + + thousands_sep = '\0'; + grouping = NULL; +#ifndef NO_FLOATING_POINT + decimal_point = localeconv()->decimal_point; +#endif + convbuf = NULL; + /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ + if (prepwrite(fp) != 0) + return (EOF); + + /* optimise fprintf(stderr) (and other unbuffered Unix files) */ + if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && + fp->_file >= 0) + return (__sbprintf(fp, fmt0, ap)); + + fmt = (wchar_t *)fmt0; + argtable = NULL; + nextarg = 1; + va_copy(orgap, ap); + ret = 0; + + /* + * Scan the format for conversions (`%' character). + */ + for (;;) { + for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) + /* void */; + if ((n = fmt - cp) != 0) { + if ((unsigned)ret + n > INT_MAX) { + ret = EOF; + goto error; + } + PRINT(cp, n); + ret += n; + } + if (ch == '\0') + goto done; + fmt++; /* skip over '%' */ + + flags = 0; + dprec = 0; + width = 0; + prec = -1; + sign = '\0'; + ox[1] = '\0'; + +rflag: ch = *fmt++; +reswitch: switch (ch) { + case ' ': + /*- + * ``If the space and + flags both appear, the space + * flag will be ignored.'' + * -- ANSI X3J11 + */ + if (!sign) + sign = ' '; + goto rflag; + case '#': + flags |= ALT; + goto rflag; + case '*': + /*- + * ``A negative field width argument is taken as a + * - flag followed by a positive field width.'' + * -- ANSI X3J11 + * They don't exclude field widths read from args. + */ + GETASTER (width); + if (width >= 0) + goto rflag; + width = -width; + /* FALLTHROUGH */ + case '-': + flags |= LADJUST; + goto rflag; + case '+': + sign = '+'; + goto rflag; + case '\'': + flags |= GROUPING; + thousands_sep = *(localeconv()->thousands_sep); + grouping = localeconv()->grouping; + goto rflag; + case '.': + if ((ch = *fmt++) == '*') { + GETASTER (prec); + goto rflag; + } + prec = 0; + while (is_digit(ch)) { + prec = 10 * prec + to_digit(ch); + ch = *fmt++; + } + goto reswitch; + case '0': + /*- + * ``Note that 0 is taken as a flag, not as the + * beginning of a field width.'' + * -- ANSI X3J11 + */ + flags |= ZEROPAD; + goto rflag; + case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + n = 0; + do { + n = 10 * n + to_digit(ch); + ch = *fmt++; + } while (is_digit(ch)); + if (ch == '$') { + nextarg = n; + if (argtable == NULL) { + argtable = statargtable; + __find_arguments (fmt0, orgap, + &argtable); + } + goto rflag; + } + width = n; + goto reswitch; +#ifndef NO_FLOATING_POINT + case 'L': + flags |= LONGDBL; + goto rflag; +#endif + case 'h': + if (flags & SHORTINT) { + flags &= ~SHORTINT; + flags |= CHARINT; + } else + flags |= SHORTINT; + goto rflag; + case 'j': + flags |= INTMAXT; + goto rflag; + case 'l': + if (flags & LONGINT) { + flags &= ~LONGINT; + flags |= LLONGINT; + } else + flags |= LONGINT; + goto rflag; + case 'q': + flags |= LLONGINT; /* not necessarily */ + goto rflag; + case 't': + flags |= PTRDIFFT; + goto rflag; + case 'z': + flags |= SIZET; + goto rflag; + case 'C': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'c': + if (flags & LONGINT) + *(cp = buf) = (wchar_t)GETARG(wint_t); + else + *(cp = buf) = (wchar_t)btowc(GETARG(int)); + size = 1; + sign = '\0'; + break; + case 'D': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'd': + case 'i': + if (flags & INTMAX_SIZE) { + ujval = SJARG(); + if ((intmax_t)ujval < 0) { + ujval = -ujval; + sign = '-'; + } + } else { + ulval = SARG(); + if ((long)ulval < 0) { + ulval = -ulval; + sign = '-'; + } + } + base = 10; + goto number; +#ifndef NO_FLOATING_POINT + case 'a': + case 'A': + if (ch == 'a') { + ox[1] = 'x'; + xdigs = xdigs_lower; + expchar = 'p'; + } else { + ox[1] = 'X'; + xdigs = xdigs_upper; + expchar = 'P'; + } + if (prec >= 0) + prec++; + if (flags & LONGDBL) { + fparg.ldbl = GETARG(long double); + dtoaresult = + __hldtoa(fparg.ldbl, xdigs, prec, + &expt, &signflag, &dtoaend); + } else { + fparg.dbl = GETARG(double); + dtoaresult = + __hdtoa(fparg.dbl, xdigs, prec, + &expt, &signflag, &dtoaend); + } + if (prec < 0) + prec = dtoaend - dtoaresult; + if (expt == INT_MAX) + ox[1] = '\0'; + if (convbuf != NULL) + free(convbuf); + ndig = dtoaend - dtoaresult; + cp = convbuf = __mbsconv(dtoaresult, -1); + freedtoa(dtoaresult); + goto fp_common; + case 'e': + case 'E': + expchar = ch; + if (prec < 0) /* account for digit before decpt */ + prec = DEFPREC + 1; + else + prec++; + goto fp_begin; + case 'f': + case 'F': + expchar = '\0'; + goto fp_begin; + case 'g': + case 'G': + expchar = ch - ('g' - 'e'); + if (prec == 0) + prec = 1; +fp_begin: + if (prec < 0) + prec = DEFPREC; + if (convbuf != NULL) + free(convbuf); + if (flags & LONGDBL) { + fparg.ldbl = GETARG(long double); + dtoaresult = + __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + } else { + fparg.dbl = GETARG(double); + dtoaresult = + dtoa(fparg.dbl, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + if (expt == 9999) + expt = INT_MAX; + } + ndig = dtoaend - dtoaresult; + cp = convbuf = __mbsconv(dtoaresult, -1); + freedtoa(dtoaresult); +fp_common: + if (signflag) + sign = '-'; + if (expt == INT_MAX) { /* inf or nan */ + if (*cp == 'N') { + cp = (ch >= 'a') ? L"nan" : L"NAN"; + sign = '\0'; + } else + cp = (ch >= 'a') ? L"inf" : L"INF"; + size = 3; + break; + } + flags |= FPT; + if (ch == 'g' || ch == 'G') { + if (expt > -4 && expt <= prec) { + /* Make %[gG] smell like %[fF] */ + expchar = '\0'; + if (flags & ALT) + prec -= expt; + else + prec = ndig - expt; + if (prec < 0) + prec = 0; + } else { + /* + * Make %[gG] smell like %[eE], but + * trim trailing zeroes if no # flag. + */ + if (!(flags & ALT)) + prec = ndig; + } + } + if (expchar) { + expsize = exponent(expstr, expt - 1, expchar); + size = expsize + prec; + if (prec > 1 || flags & ALT) + ++size; + } else { + /* space for digits before decimal point */ + if (expt > 0) + size = expt; + else /* "0" */ + size = 1; + /* space for decimal pt and following digits */ + if (prec || flags & ALT) + size += prec + 1; + if (grouping && expt > 0) { + /* space for thousands' grouping */ + nseps = nrepeats = 0; + lead = expt; + while (*grouping != CHAR_MAX) { + if (lead <= *grouping) + break; + lead -= *grouping; + if (*(grouping+1)) { + nseps++; + grouping++; + } else + nrepeats++; + } + size += nseps + nrepeats; + } else + lead = expt; + } + break; +#endif /* !NO_FLOATING_POINT */ + case 'n': + /* + * Assignment-like behavior is specified if the + * value overflows or is otherwise unrepresentable. + * C99 says to use `signed char' for %hhn conversions. + */ + if (flags & LLONGINT) + *GETARG(long long *) = ret; + else if (flags & SIZET) + *GETARG(ssize_t *) = (ssize_t)ret; + else if (flags & PTRDIFFT) + *GETARG(ptrdiff_t *) = ret; + else if (flags & INTMAXT) + *GETARG(intmax_t *) = ret; + else if (flags & LONGINT) + *GETARG(long *) = ret; + else if (flags & SHORTINT) + *GETARG(short *) = ret; + else if (flags & CHARINT) + *GETARG(signed char *) = ret; + else + *GETARG(int *) = ret; + continue; /* no output */ + case 'O': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'o': + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 8; + goto nosign; + case 'p': + /*- + * ``The argument shall be a pointer to void. The + * value of the pointer is converted to a sequence + * of printable characters, in an implementation- + * defined manner.'' + * -- ANSI X3J11 + */ + ujval = (uintmax_t)(uintptr_t)GETARG(void *); + base = 16; + xdigs = xdigs_lower; + flags = flags | INTMAXT; + ox[1] = 'x'; + goto nosign; + case 'S': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 's': + if (flags & LONGINT) { + if ((cp = GETARG(wchar_t *)) == NULL) + cp = L"(null)"; + } else { + char *mbp; + + if (convbuf != NULL) + free(convbuf); + if ((mbp = GETARG(char *)) == NULL) + cp = L"(null)"; + else { + convbuf = __mbsconv(mbp, prec); + if (convbuf == NULL) { + fp->_flags |= __SERR; + goto error; + } + cp = convbuf; + } + } + + if (prec >= 0) { + /* + * can't use wcslen; can only look for the + * NUL in the first `prec' characters, and + * wcslen() will go further. + */ + wchar_t *p = wmemchr(cp, 0, (size_t)prec); + + if (p != NULL) { + size = p - cp; + if (size > prec) + size = prec; + } else + size = prec; + } else + size = wcslen(cp); + sign = '\0'; + break; + case 'U': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'u': + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 10; + goto nosign; + case 'X': + xdigs = xdigs_upper; + goto hex; + case 'x': + xdigs = xdigs_lower; +hex: + if (flags & INTMAX_SIZE) + ujval = UJARG(); + else + ulval = UARG(); + base = 16; + /* leading 0x/X only if non-zero */ + if (flags & ALT && + (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) + ox[1] = ch; + + flags &= ~GROUPING; + /* unsigned conversions */ +nosign: sign = '\0'; + /*- + * ``... diouXx conversions ... if a precision is + * specified, the 0 flag will be ignored.'' + * -- ANSI X3J11 + */ +number: if ((dprec = prec) >= 0) + flags &= ~ZEROPAD; + + /*- + * ``The result of converting a zero value with an + * explicit precision of zero is no characters.'' + * -- ANSI X3J11 + * + * ``The C Standard is clear enough as is. The call + * printf("%#.0o", 0) should print 0.'' + * -- Defect Report #151 + */ + cp = buf + BUF; + if (flags & INTMAX_SIZE) { + if (ujval != 0 || prec != 0 || + (flags & ALT && base == 8)) + cp = __ujtoa(ujval, cp, base, + flags & ALT, xdigs, + flags & GROUPING, thousands_sep, + grouping); + } else { + if (ulval != 0 || prec != 0 || + (flags & ALT && base == 8)) + cp = __ultoa(ulval, cp, base, + flags & ALT, xdigs, + flags & GROUPING, thousands_sep, + grouping); + } + size = buf + BUF - cp; + if (size > BUF) /* should never happen */ + abort(); + break; + default: /* "%?" prints ?, unless ? is NUL */ + if (ch == '\0') + goto done; + /* pretend it was %c with argument ch */ + cp = buf; + *cp = ch; + size = 1; + sign = '\0'; + break; + } + + /* + * All reasonable formats wind up here. At this point, `cp' + * points to a string which (if not flags&LADJUST) should be + * padded out to `width' places. If flags&ZEROPAD, it should + * first be prefixed by any sign or other prefix; otherwise, + * it should be blank padded before the prefix is emitted. + * After any left-hand padding and prefixing, emit zeroes + * required by a decimal [diouxX] precision, then print the + * string proper, then emit zeroes required by any leftover + * floating precision; finally, if LADJUST, pad with blanks. + * + * Compute actual size, so we know how much to pad. + * size excludes decimal prec; realsz includes it. + */ + realsz = dprec > size ? dprec : size; + if (sign) + realsz++; + if (ox[1]) + realsz += 2; + + prsize = width > realsz ? width : realsz; + if ((unsigned)ret + prsize > INT_MAX) { + ret = EOF; + goto error; + } + + /* right-adjusting blank padding */ + if ((flags & (LADJUST|ZEROPAD)) == 0) + PAD(width - realsz, blanks); + + /* prefix */ + if (sign) + PRINT(&sign, 1); + + if (ox[1]) { /* ox[1] is either x, X, or \0 */ + ox[0] = '0'; + PRINT(ox, 2); + } + + /* right-adjusting zero padding */ + if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) + PAD(width - realsz, zeroes); + + /* leading zeroes from decimal precision */ + PAD(dprec - size, zeroes); + + /* the string or number proper */ +#ifndef NO_FLOATING_POINT + if ((flags & FPT) == 0) { + PRINT(cp, size); + } else { /* glue together f_p fragments */ + if (!expchar) { /* %[fF] or sufficiently short %[gG] */ + if (expt <= 0) { + PRINT(zeroes, 1); + if (prec || flags & ALT) + PRINT(decimal_point, 1); + PAD(-expt, zeroes); + /* already handled initial 0's */ + prec += expt; + } else { + PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); + cp += lead; + if (grouping) { + while (nseps>0 || nrepeats>0) { + if (nrepeats > 0) + nrepeats--; + else { + grouping--; + nseps--; + } + PRINT(&thousands_sep, + 1); + PRINTANDPAD(cp, + convbuf + ndig, + *grouping, zeroes); + cp += *grouping; + } + if (cp > convbuf + ndig) + cp = convbuf + ndig; + } + if (prec || flags & ALT) { + buf[0] = *decimal_point; + PRINT(buf, 1); + } + } + PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); + } else { /* %[eE] or sufficiently long %[gG] */ + if (prec > 1 || flags & ALT) { + buf[0] = *cp++; + buf[1] = *decimal_point; + PRINT(buf, 2); + PRINT(cp, ndig-1); + PAD(prec - ndig, zeroes); + } else /* XeYYY */ + PRINT(cp, 1); + PRINT(expstr, expsize); + } + } +#else + PRINT(cp, size); +#endif + /* left-adjusting padding (always blank) */ + if (flags & LADJUST) + PAD(width - realsz, blanks); + + /* finally, adjust ret */ + ret += prsize; + } +done: +error: + va_end(orgap); + if (convbuf != NULL) + free(convbuf); + if (__sferror(fp)) + ret = EOF; + if ((argtable != NULL) && (argtable != statargtable)) + free (argtable); + return (ret); + /* NOTREACHED */ +} + +/* + * Find all arguments when a positional parameter is encountered. Returns a + * table, indexed by argument number, of pointers to each arguments. The + * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. + * It will be replaces with a malloc-ed one if it overflows. + */ +static void +__find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) +{ + wchar_t *fmt; /* format string */ + wchar_t ch; /* character from fmt */ + int n, n2; /* handy integer (short term usage) */ + wchar_t *cp; /* handy char pointer (short term usage) */ + int flags; /* flags as above */ + int width; /* width from format (%8d), or 0 */ + enum typeid *typetable; /* table of types */ + enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; + int tablesize; /* current size of type table */ + int tablemax; /* largest used index in table */ + int nextarg; /* 1-based argument index */ + + /* + * Add an argument type to the table, expanding if necessary. + */ +#define ADDTYPE(type) \ + ((nextarg >= tablesize) ? \ + __grow_type_table(nextarg, &typetable, &tablesize) : (void)0, \ + (nextarg > tablemax) ? tablemax = nextarg : 0, \ + typetable[nextarg++] = type) + +#define ADDSARG() \ + ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ + ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ + ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ + ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ + ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) + +#define ADDUARG() \ + ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ + ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ + ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ + ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ + ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) + + /* + * Add * arguments to the type array. + */ +#define ADDASTER() \ + n2 = 0; \ + cp = fmt; \ + while (is_digit(*cp)) { \ + n2 = 10 * n2 + to_digit(*cp); \ + cp++; \ + } \ + if (*cp == '$') { \ + int hold = nextarg; \ + nextarg = n2; \ + ADDTYPE (T_INT); \ + nextarg = hold; \ + fmt = ++cp; \ + } else { \ + ADDTYPE (T_INT); \ + } + fmt = (wchar_t *)fmt0; + typetable = stattypetable; + tablesize = STATIC_ARG_TBL_SIZE; + tablemax = 0; + nextarg = 1; + for (n = 0; n < STATIC_ARG_TBL_SIZE; n++) + typetable[n] = T_UNUSED; + + /* + * Scan the format for conversions (`%' character). + */ + for (;;) { + for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) + /* void */; + if (ch == '\0') + goto done; + fmt++; /* skip over '%' */ + + flags = 0; + width = 0; + +rflag: ch = *fmt++; +reswitch: switch (ch) { + case ' ': + case '#': + goto rflag; + case '*': + ADDASTER (); + goto rflag; + case '-': + case '+': + case '\'': + goto rflag; + case '.': + if ((ch = *fmt++) == '*') { + ADDASTER (); + goto rflag; + } + while (is_digit(ch)) { + ch = *fmt++; + } + goto reswitch; + case '0': + goto rflag; + case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + n = 0; + do { + n = 10 * n + to_digit(ch); + ch = *fmt++; + } while (is_digit(ch)); + if (ch == '$') { + nextarg = n; + goto rflag; + } + width = n; + goto reswitch; +#ifndef NO_FLOATING_POINT + case 'L': + flags |= LONGDBL; + goto rflag; +#endif + case 'h': + if (flags & SHORTINT) { + flags &= ~SHORTINT; + flags |= CHARINT; + } else + flags |= SHORTINT; + goto rflag; + case 'j': + flags |= INTMAXT; + goto rflag; + case 'l': + if (flags & LONGINT) { + flags &= ~LONGINT; + flags |= LLONGINT; + } else + flags |= LONGINT; + goto rflag; + case 'q': + flags |= LLONGINT; /* not necessarily */ + goto rflag; + case 't': + flags |= PTRDIFFT; + goto rflag; + case 'z': + flags |= SIZET; + goto rflag; + case 'C': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'c': + if (flags & LONGINT) + ADDTYPE(T_WINT); + else + ADDTYPE(T_INT); + break; + case 'D': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'd': + case 'i': + ADDSARG(); + break; +#ifndef NO_FLOATING_POINT + case 'a': + case 'A': + case 'e': + case 'E': + case 'f': + case 'g': + case 'G': + if (flags & LONGDBL) + ADDTYPE(T_LONG_DOUBLE); + else + ADDTYPE(T_DOUBLE); + break; +#endif /* !NO_FLOATING_POINT */ + case 'n': + if (flags & INTMAXT) + ADDTYPE(TP_INTMAXT); + else if (flags & PTRDIFFT) + ADDTYPE(TP_PTRDIFFT); + else if (flags & SIZET) + ADDTYPE(TP_SIZET); + else if (flags & LLONGINT) + ADDTYPE(TP_LLONG); + else if (flags & LONGINT) + ADDTYPE(TP_LONG); + else if (flags & SHORTINT) + ADDTYPE(TP_SHORT); + else if (flags & CHARINT) + ADDTYPE(TP_SCHAR); + else + ADDTYPE(TP_INT); + continue; /* no output */ + case 'O': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'o': + ADDUARG(); + break; + case 'p': + ADDTYPE(TP_VOID); + break; + case 'S': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 's': + if (flags & LONGINT) + ADDTYPE(TP_WCHAR); + else + ADDTYPE(TP_CHAR); + break; + case 'U': + flags |= LONGINT; + /*FALLTHROUGH*/ + case 'u': + case 'X': + case 'x': + ADDUARG(); + break; + default: /* "%?" prints ?, unless ? is NUL */ + if (ch == '\0') + goto done; + break; + } + } +done: + /* + * Build the argument table. + */ + if (tablemax >= STATIC_ARG_TBL_SIZE) { + *argtable = (union arg *) + malloc (sizeof (union arg) * (tablemax + 1)); + } + + (*argtable) [0].intarg = 0; + for (n = 1; n <= tablemax; n++) { + switch (typetable [n]) { + case T_UNUSED: /* whoops! */ + (*argtable) [n].intarg = va_arg (ap, int); + break; + case TP_SCHAR: + (*argtable) [n].pschararg = va_arg (ap, signed char *); + break; + case TP_SHORT: + (*argtable) [n].pshortarg = va_arg (ap, short *); + break; + case T_INT: + (*argtable) [n].intarg = va_arg (ap, int); + break; + case T_U_INT: + (*argtable) [n].uintarg = va_arg (ap, unsigned int); + break; + case TP_INT: + (*argtable) [n].pintarg = va_arg (ap, int *); + break; + case T_LONG: + (*argtable) [n].longarg = va_arg (ap, long); + break; + case T_U_LONG: + (*argtable) [n].ulongarg = va_arg (ap, unsigned long); + break; + case TP_LONG: + (*argtable) [n].plongarg = va_arg (ap, long *); + break; + case T_LLONG: + (*argtable) [n].longlongarg = va_arg (ap, long long); + break; + case T_U_LLONG: + (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); + break; + case TP_LLONG: + (*argtable) [n].plonglongarg = va_arg (ap, long long *); + break; + case T_PTRDIFFT: + (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); + break; + case TP_PTRDIFFT: + (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); + break; + case T_SIZET: + (*argtable) [n].sizearg = va_arg (ap, size_t); + break; + case TP_SIZET: + (*argtable) [n].psizearg = va_arg (ap, ssize_t *); + break; + case T_INTMAXT: + (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); + break; + case T_UINTMAXT: + (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); + break; + case TP_INTMAXT: + (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); + break; + case T_DOUBLE: +#ifndef NO_FLOATING_POINT + (*argtable) [n].doublearg = va_arg (ap, double); +#endif + break; + case T_LONG_DOUBLE: +#ifndef NO_FLOATING_POINT + (*argtable) [n].longdoublearg = va_arg (ap, long double); +#endif + break; + case TP_CHAR: + (*argtable) [n].pchararg = va_arg (ap, char *); + break; + case TP_VOID: + (*argtable) [n].pvoidarg = va_arg (ap, void *); + break; + case T_WINT: + (*argtable) [n].wintarg = va_arg (ap, wint_t); + break; + case TP_WCHAR: + (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); + break; + } + } + + if ((typetable != NULL) && (typetable != stattypetable)) + free (typetable); +} + +/* + * Increase the size of the type table. + */ +static void +__grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) +{ + enum typeid *const oldtable = *typetable; + const int oldsize = *tablesize; + enum typeid *newtable; + int n, newsize = oldsize * 2; + + if (newsize < nextarg + 1) + newsize = nextarg + 1; + if (oldsize == STATIC_ARG_TBL_SIZE) { + if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL) + abort(); /* XXX handle better */ + bcopy(oldtable, newtable, oldsize * sizeof(enum typeid)); + } else { + newtable = reallocf(oldtable, newsize * sizeof(enum typeid)); + if (newtable == NULL) + abort(); /* XXX handle better */ + } + for (n = oldsize; n < newsize; n++) + newtable[n] = T_UNUSED; + + *typetable = newtable; + *tablesize = newsize; +} + + +#ifndef NO_FLOATING_POINT + +static int +exponent(wchar_t *p0, int exp, wchar_t fmtch) +{ + wchar_t *p, *t; + wchar_t expbuf[MAXEXPDIG]; + + p = p0; + *p++ = fmtch; + if (exp < 0) { + exp = -exp; + *p++ = '-'; + } + else + *p++ = '+'; + t = expbuf + MAXEXPDIG; + if (exp > 9) { + do { + *--t = to_char(exp % 10); + } while ((exp /= 10) > 9); + *--t = to_char(exp); + for (; t < expbuf + MAXEXPDIG; *p++ = *t++); + } + else { + /* + * Exponents for decimal floating point conversions + * (%[eEgG]) must be at least two characters long, + * whereas exponents for hexadecimal conversions can + * be only one character long. + */ + if (fmtch == 'e' || fmtch == 'E') + *p++ = '0'; + *p++ = to_char(exp); + } + return (p - p0); +} +#endif /* !NO_FLOATING_POINT */ diff --git a/lib/libc/stdio/vfwscanf.c b/lib/libc/stdio/vfwscanf.c new file mode 100644 index 0000000..a855677 --- /dev/null +++ b/lib/libc/stdio/vfwscanf.c @@ -0,0 +1,880 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vfscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <ctype.h> +#include <inttypes.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <stddef.h> +#include <stdarg.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> +#include "un-namespace.h" + +#include "libc_private.h" +#include "local.h" + +#ifndef NO_FLOATING_POINT +#include <locale.h> +#endif + +#define BUF 513 /* Maximum length of numeric string. */ + +/* + * Flags used during conversion. + */ +#define LONG 0x01 /* l: long or double */ +#define LONGDBL 0x02 /* L: long double */ +#define SHORT 0x04 /* h: short */ +#define SUPPRESS 0x08 /* *: suppress assignment */ +#define POINTER 0x10 /* p: void * (as hex) */ +#define NOSKIP 0x20 /* [ or c: do not skip blanks */ +#define LONGLONG 0x400 /* ll: long long (+ deprecated q: quad) */ +#define INTMAXT 0x800 /* j: intmax_t */ +#define PTRDIFFT 0x1000 /* t: ptrdiff_t */ +#define SIZET 0x2000 /* z: size_t */ +#define SHORTSHORT 0x4000 /* hh: char */ +#define UNSIGNED 0x8000 /* %[oupxX] conversions */ + +/* + * The following are used in integral conversions only: + * SIGNOK, NDIGITS, PFXOK, and NZDIGITS + */ +#define SIGNOK 0x40 /* +/- is (still) legal */ +#define NDIGITS 0x80 /* no digits detected */ +#define PFXOK 0x100 /* 0x prefix is (still) legal */ +#define NZDIGITS 0x200 /* no zero digits detected */ +#define HAVESIGN 0x10000 /* sign detected */ + +/* + * Conversion types. + */ +#define CT_CHAR 0 /* %c conversion */ +#define CT_CCL 1 /* %[...] conversion */ +#define CT_STRING 2 /* %s conversion */ +#define CT_INT 3 /* %[dioupxX] conversion */ +#define CT_FLOAT 4 /* %[efgEFG] conversion */ + +#ifndef NO_FLOATING_POINT +static int parsefloat(FILE *, wchar_t *, wchar_t *); +#endif + +extern int __scanfdebug; + +#define INCCL(_c) \ + (cclcompl ? (wmemchr(ccls, (_c), ccle - ccls) == NULL) : \ + (wmemchr(ccls, (_c), ccle - ccls) != NULL)) + +/* + * MT-safe version. + */ +int +vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, va_list ap) +{ + int ret; + + FLOCKFILE(fp); + ORIENT(fp, 1); + ret = __vfwscanf(fp, fmt, ap); + FUNLOCKFILE(fp); + return (ret); +} + +/* + * Non-MT-safe version. + */ +int +__vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, va_list ap) +{ + wint_t c; /* character from format, or conversion */ + size_t width; /* field width, or 0 */ + wchar_t *p; /* points into all kinds of strings */ + int n; /* handy integer */ + int flags; /* flags as defined above */ + wchar_t *p0; /* saves original value of p when necessary */ + int nassigned; /* number of fields assigned */ + int nconversions; /* number of conversions */ + int nread; /* number of characters consumed from fp */ + int base; /* base argument to conversion function */ + wchar_t buf[BUF]; /* buffer for numeric conversions */ + const wchar_t *ccls; /* character class start */ + const wchar_t *ccle; /* character class end */ + int cclcompl; /* ccl is complemented? */ + wint_t wi; /* handy wint_t */ + char *mbp; /* multibyte string pointer for %c %s %[ */ + size_t nconv; /* number of bytes in mb. conversion */ + char mbbuf[MB_LEN_MAX]; /* temporary mb. character buffer */ + static const mbstate_t initial; + mbstate_t mbs; + + /* `basefix' is used to avoid `if' tests in the integer scanner */ + static short basefix[17] = + { 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 }; + + nassigned = 0; + nconversions = 0; + nread = 0; + ccls = ccle = NULL; + for (;;) { + c = *fmt++; + if (c == 0) + return (nassigned); + if (iswspace(c)) { + while ((c = __fgetwc(fp)) != WEOF && + iswspace(c)) + ; + if (c != WEOF) + __ungetwc(c, fp); + continue; + } + if (c != '%') + goto literal; + width = 0; + flags = 0; + /* + * switch on the format. continue if done; + * break once format type is derived. + */ +again: c = *fmt++; + switch (c) { + case '%': +literal: + if ((wi = __fgetwc(fp)) == WEOF) + goto input_failure; + if (wi != c) { + __ungetwc(wi, fp); + goto input_failure; + } + nread++; + continue; + + case '*': + flags |= SUPPRESS; + goto again; + case 'j': + flags |= INTMAXT; + goto again; + case 'l': + if (flags & LONG) { + flags &= ~LONG; + flags |= LONGLONG; + } else + flags |= LONG; + goto again; + case 'q': + flags |= LONGLONG; /* not quite */ + goto again; + case 't': + flags |= PTRDIFFT; + goto again; + case 'z': + flags |= SIZET; + goto again; + case 'L': + flags |= LONGDBL; + goto again; + case 'h': + if (flags & SHORT) { + flags &= ~SHORT; + flags |= SHORTSHORT; + } else + flags |= SHORT; + goto again; + + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + width = width * 10 + c - '0'; + goto again; + + /* + * Conversions. + */ + case 'd': + c = CT_INT; + base = 10; + break; + + case 'i': + c = CT_INT; + base = 0; + break; + + case 'o': + c = CT_INT; + flags |= UNSIGNED; + base = 8; + break; + + case 'u': + c = CT_INT; + flags |= UNSIGNED; + base = 10; + break; + + case 'X': + case 'x': + flags |= PFXOK; /* enable 0x prefixing */ + c = CT_INT; + flags |= UNSIGNED; + base = 16; + break; + +#ifndef NO_FLOATING_POINT + case 'A': case 'E': case 'F': case 'G': + case 'a': case 'e': case 'f': case 'g': + c = CT_FLOAT; + break; +#endif + + case 'S': + flags |= LONG; + /* FALLTHROUGH */ + case 's': + c = CT_STRING; + break; + + case '[': + ccls = fmt; + if (*fmt == '^') { + cclcompl = 1; + fmt++; + } else + cclcompl = 0; + if (*fmt == ']') + fmt++; + while (*fmt != '\0' && *fmt != ']') + fmt++; + ccle = fmt; + fmt++; + flags |= NOSKIP; + c = CT_CCL; + break; + + case 'C': + flags |= LONG; + /* FALLTHROUGH */ + case 'c': + flags |= NOSKIP; + c = CT_CHAR; + break; + + case 'p': /* pointer format is like hex */ + flags |= POINTER | PFXOK; + c = CT_INT; /* assumes sizeof(uintmax_t) */ + flags |= UNSIGNED; /* >= sizeof(uintptr_t) */ + base = 16; + break; + + case 'n': + nconversions++; + if (flags & SUPPRESS) /* ??? */ + continue; + if (flags & SHORTSHORT) + *va_arg(ap, char *) = nread; + else if (flags & SHORT) + *va_arg(ap, short *) = nread; + else if (flags & LONG) + *va_arg(ap, long *) = nread; + else if (flags & LONGLONG) + *va_arg(ap, long long *) = nread; + else if (flags & INTMAXT) + *va_arg(ap, intmax_t *) = nread; + else if (flags & SIZET) + *va_arg(ap, size_t *) = nread; + else if (flags & PTRDIFFT) + *va_arg(ap, ptrdiff_t *) = nread; + else + *va_arg(ap, int *) = nread; + continue; + + default: + goto match_failure; + + /* + * Disgusting backwards compatibility hack. XXX + */ + case '\0': /* compat */ + return (EOF); + } + + /* + * Consume leading white space, except for formats + * that suppress this. + */ + if ((flags & NOSKIP) == 0) { + while ((wi = __fgetwc(fp)) != WEOF && iswspace(wi)) + nread++; + if (wi == WEOF) + goto input_failure; + __ungetwc(wi, fp); + } + + /* + * Do the conversion. + */ + switch (c) { + + case CT_CHAR: + /* scan arbitrary characters (sets NOSKIP) */ + if (width == 0) + width = 1; + if (flags & LONG) { + if (!(flags & SUPPRESS)) + p = va_arg(ap, wchar_t *); + n = 0; + while (width-- != 0 && + (wi = __fgetwc(fp)) != WEOF) { + if (!(flags & SUPPRESS)) + *p++ = (wchar_t)wi; + n++; + } + if (n == 0) + goto input_failure; + nread += n; + if (!(flags & SUPPRESS)) + nassigned++; + } else { + if (!(flags & SUPPRESS)) + mbp = va_arg(ap, char *); + n = 0; + mbs = initial; + while (width != 0 && + (wi = __fgetwc(fp)) != WEOF) { + if (width >= MB_CUR_MAX && + !(flags & SUPPRESS)) { + nconv = wcrtomb(mbp, wi, &mbs); + if (nconv == (size_t)-1) + goto input_failure; + } else { + nconv = wcrtomb(mbbuf, wi, + &mbs); + if (nconv == (size_t)-1) + goto input_failure; + if (nconv > width) { + __ungetwc(wi, fp); + break; + } + if (!(flags & SUPPRESS)) + memcpy(mbp, mbbuf, + nconv); + } + if (!(flags & SUPPRESS)) + mbp += nconv; + width -= nconv; + n++; + } + if (n == 0) + goto input_failure; + nread += n; + if (!(flags & SUPPRESS)) + nassigned++; + } + nconversions++; + break; + + case CT_CCL: + /* scan a (nonempty) character class (sets NOSKIP) */ + if (width == 0) + width = (size_t)~0; /* `infinity' */ + /* take only those things in the class */ + if ((flags & SUPPRESS) && (flags & LONG)) { + n = 0; + while ((wi = __fgetwc(fp)) != WEOF && + width-- != 0 && INCCL(wi)) + n++; + if (wi != WEOF) + __ungetwc(wi, fp); + if (n == 0) + goto match_failure; + } else if (flags & LONG) { + p0 = p = va_arg(ap, wchar_t *); + while ((wi = __fgetwc(fp)) != WEOF && + width-- != 0 && INCCL(wi)) + *p++ = (wchar_t)wi; + if (wi != WEOF) + __ungetwc(wi, fp); + n = p - p0; + if (n == 0) + goto match_failure; + *p = 0; + nassigned++; + } else { + if (!(flags & SUPPRESS)) + mbp = va_arg(ap, char *); + n = 0; + mbs = initial; + while ((wi = __fgetwc(fp)) != WEOF && + width != 0 && INCCL(wi)) { + if (width >= MB_CUR_MAX && + !(flags & SUPPRESS)) { + nconv = wcrtomb(mbp, wi, &mbs); + if (nconv == (size_t)-1) + goto input_failure; + } else { + nconv = wcrtomb(mbbuf, wi, + &mbs); + if (nconv == (size_t)-1) + goto input_failure; + if (nconv > width) + break; + if (!(flags & SUPPRESS)) + memcpy(mbp, mbbuf, + nconv); + } + if (!(flags & SUPPRESS)) + mbp += nconv; + width -= nconv; + n++; + } + if (wi != WEOF) + __ungetwc(wi, fp); + if (!(flags & SUPPRESS)) { + *mbp = 0; + nassigned++; + } + } + nread += n; + nconversions++; + break; + + case CT_STRING: + /* like CCL, but zero-length string OK, & no NOSKIP */ + if (width == 0) + width = (size_t)~0; + if ((flags & SUPPRESS) && (flags & LONG)) { + while ((wi = __fgetwc(fp)) != WEOF && + width-- != 0 && + !iswspace(wi)) + nread++; + if (wi != WEOF) + __ungetwc(wi, fp); + } else if (flags & LONG) { + p0 = p = va_arg(ap, wchar_t *); + while ((wi = __fgetwc(fp)) != WEOF && + width-- != 0 && + !iswspace(wi)) { + *p++ = (wchar_t)wi; + nread++; + } + if (wi != WEOF) + __ungetwc(wi, fp); + *p = '\0'; + nassigned++; + } else { + if (!(flags & SUPPRESS)) + mbp = va_arg(ap, char *); + mbs = initial; + while ((wi = __fgetwc(fp)) != WEOF && + width != 0 && + !iswspace(wi)) { + if (width >= MB_CUR_MAX && + !(flags & SUPPRESS)) { + nconv = wcrtomb(mbp, wi, &mbs); + if (nconv == (size_t)-1) + goto input_failure; + } else { + nconv = wcrtomb(mbbuf, wi, + &mbs); + if (nconv == (size_t)-1) + goto input_failure; + if (nconv > width) + break; + if (!(flags & SUPPRESS)) + memcpy(mbp, mbbuf, + nconv); + } + if (!(flags & SUPPRESS)) + mbp += nconv; + width -= nconv; + nread++; + } + if (wi != WEOF) + __ungetwc(wi, fp); + if (!(flags & SUPPRESS)) { + *mbp = 0; + nassigned++; + } + } + nconversions++; + continue; + + case CT_INT: + /* scan an integer as if by the conversion function */ + if (width == 0 || width > sizeof(buf) / + sizeof(*buf) - 1) + width = sizeof(buf) / sizeof(*buf) - 1; + flags |= SIGNOK | NDIGITS | NZDIGITS; + for (p = buf; width; width--) { + c = __fgetwc(fp); + /* + * Switch on the character; `goto ok' + * if we accept it as a part of number. + */ + switch (c) { + + /* + * The digit 0 is always legal, but is + * special. For %i conversions, if no + * digits (zero or nonzero) have been + * scanned (only signs), we will have + * base==0. In that case, we should set + * it to 8 and enable 0x prefixing. + * Also, if we have not scanned zero digits + * before this, do not turn off prefixing + * (someone else will turn it off if we + * have scanned any nonzero digits). + */ + case '0': + if (base == 0) { + base = 8; + flags |= PFXOK; + } + if (flags & NZDIGITS) + flags &= ~(SIGNOK|NZDIGITS|NDIGITS); + else + flags &= ~(SIGNOK|PFXOK|NDIGITS); + goto ok; + + /* 1 through 7 always legal */ + case '1': case '2': case '3': + case '4': case '5': case '6': case '7': + base = basefix[base]; + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* digits 8 and 9 ok iff decimal or hex */ + case '8': case '9': + base = basefix[base]; + if (base <= 8) + break; /* not legal here */ + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* letters ok iff hex */ + case 'A': case 'B': case 'C': + case 'D': case 'E': case 'F': + case 'a': case 'b': case 'c': + case 'd': case 'e': case 'f': + /* no need to fix base here */ + if (base <= 10) + break; /* not legal here */ + flags &= ~(SIGNOK | PFXOK | NDIGITS); + goto ok; + + /* sign ok only as first character */ + case '+': case '-': + if (flags & SIGNOK) { + flags &= ~SIGNOK; + flags |= HAVESIGN; + goto ok; + } + break; + + /* + * x ok iff flag still set & 2nd char (or + * 3rd char if we have a sign). + */ + case 'x': case 'X': + if (flags & PFXOK && p == + buf + 1 + !!(flags & HAVESIGN)) { + base = 16; /* if %i */ + flags &= ~PFXOK; + goto ok; + } + break; + } + + /* + * If we got here, c is not a legal character + * for a number. Stop accumulating digits. + */ + if (c != WEOF) + __ungetwc(c, fp); + break; + ok: + /* + * c is legal: store it and look at the next. + */ + *p++ = (wchar_t)c; + } + /* + * If we had only a sign, it is no good; push + * back the sign. If the number ends in `x', + * it was [sign] '0' 'x', so push back the x + * and treat it as [sign] '0'. + */ + if (flags & NDIGITS) { + if (p > buf) + __ungetwc(*--p, fp); + goto match_failure; + } + c = p[-1]; + if (c == 'x' || c == 'X') { + --p; + __ungetwc(c, fp); + } + if ((flags & SUPPRESS) == 0) { + uintmax_t res; + + *p = 0; + if ((flags & UNSIGNED) == 0) + res = wcstoimax(buf, NULL, base); + else + res = wcstoumax(buf, NULL, base); + if (flags & POINTER) + *va_arg(ap, void **) = + (void *)(uintptr_t)res; + else if (flags & SHORTSHORT) + *va_arg(ap, char *) = res; + else if (flags & SHORT) + *va_arg(ap, short *) = res; + else if (flags & LONG) + *va_arg(ap, long *) = res; + else if (flags & LONGLONG) + *va_arg(ap, long long *) = res; + else if (flags & INTMAXT) + *va_arg(ap, intmax_t *) = res; + else if (flags & PTRDIFFT) + *va_arg(ap, ptrdiff_t *) = res; + else if (flags & SIZET) + *va_arg(ap, size_t *) = res; + else + *va_arg(ap, int *) = res; + nassigned++; + } + nread += p - buf; + nconversions++; + break; + +#ifndef NO_FLOATING_POINT + case CT_FLOAT: + /* scan a floating point number as if by strtod */ + if (width == 0 || width > sizeof(buf) / + sizeof(*buf) - 1) + width = sizeof(buf) / sizeof(*buf) - 1; + if ((width = parsefloat(fp, buf, buf + width)) == 0) + goto match_failure; + if ((flags & SUPPRESS) == 0) { + if (flags & LONGDBL) { + long double res = wcstold(buf, &p); + *va_arg(ap, long double *) = res; + } else if (flags & LONG) { + double res = wcstod(buf, &p); + *va_arg(ap, double *) = res; + } else { + float res = wcstof(buf, &p); + *va_arg(ap, float *) = res; + } + if (__scanfdebug && p - buf != width) + abort(); + nassigned++; + } + nread += width; + nconversions++; + break; +#endif /* !NO_FLOATING_POINT */ + } + } +input_failure: + return (nconversions != 0 ? nassigned : EOF); +match_failure: + return (nassigned); +} + +#ifndef NO_FLOATING_POINT +static int +parsefloat(FILE *fp, wchar_t *buf, wchar_t *end) +{ + wchar_t *commit, *p; + int infnanpos = 0; + enum { + S_START, S_GOTSIGN, S_INF, S_NAN, S_MAYBEHEX, + S_DIGITS, S_FRAC, S_EXP, S_EXPDIGITS + } state = S_START; + wchar_t c; + wchar_t decpt = (wchar_t)(unsigned char)*localeconv()->decimal_point; + _Bool gotmantdig = 0, ishex = 0; + + /* + * We set commit = p whenever the string we have read so far + * constitutes a valid representation of a floating point + * number by itself. At some point, the parse will complete + * or fail, and we will ungetc() back to the last commit point. + * To ensure that the file offset gets updated properly, it is + * always necessary to read at least one character that doesn't + * match; thus, we can't short-circuit "infinity" or "nan(...)". + */ + commit = buf - 1; + c = WEOF; + for (p = buf; p < end; ) { + if ((c = __fgetwc(fp)) == WEOF) + break; +reswitch: + switch (state) { + case S_START: + state = S_GOTSIGN; + if (c == '-' || c == '+') + break; + else + goto reswitch; + case S_GOTSIGN: + switch (c) { + case '0': + state = S_MAYBEHEX; + commit = p; + break; + case 'I': + case 'i': + state = S_INF; + break; + case 'N': + case 'n': + state = S_NAN; + break; + default: + state = S_DIGITS; + goto reswitch; + } + break; + case S_INF: + if (infnanpos > 6 || + (c != "nfinity"[infnanpos] && + c != "NFINITY"[infnanpos])) + goto parsedone; + if (infnanpos == 1 || infnanpos == 6) + commit = p; /* inf or infinity */ + infnanpos++; + break; + case S_NAN: + switch (infnanpos) { + case -1: /* XXX kludge to deal with nan(...) */ + goto parsedone; + case 0: + if (c != 'A' && c != 'a') + goto parsedone; + break; + case 1: + if (c != 'N' && c != 'n') + goto parsedone; + else + commit = p; + break; + case 2: + if (c != '(') + goto parsedone; + break; + default: + if (c == ')') { + commit = p; + infnanpos = -2; + } else if (!iswalnum(c) && c != '_') + goto parsedone; + break; + } + infnanpos++; + break; + case S_MAYBEHEX: + state = S_DIGITS; + if (c == 'X' || c == 'x') { + ishex = 1; + break; + } else { /* we saw a '0', but no 'x' */ + gotmantdig = 1; + goto reswitch; + } + case S_DIGITS: + if ((ishex && iswxdigit(c)) || iswdigit(c)) + gotmantdig = 1; + else { + state = S_FRAC; + if (c != decpt) + goto reswitch; + } + if (gotmantdig) + commit = p; + break; + case S_FRAC: + if (((c == 'E' || c == 'e') && !ishex) || + ((c == 'P' || c == 'p') && ishex)) { + if (!gotmantdig) + goto parsedone; + else + state = S_EXP; + } else if ((ishex && iswxdigit(c)) || iswdigit(c)) { + commit = p; + gotmantdig = 1; + } else + goto parsedone; + break; + case S_EXP: + state = S_EXPDIGITS; + if (c == '-' || c == '+') + break; + else + goto reswitch; + case S_EXPDIGITS: + if (iswdigit(c)) + commit = p; + else + goto parsedone; + break; + default: + abort(); + } + *p++ = c; + c = WEOF; + } + +parsedone: + if (c != WEOF) + __ungetwc(c, fp); + while (commit < --p) + __ungetwc(*p, fp); + *++commit = '\0'; + return (commit - buf); +} +#endif diff --git a/lib/libc/stdio/vprintf.c b/lib/libc/stdio/vprintf.c new file mode 100644 index 0000000..15c3241 --- /dev/null +++ b/lib/libc/stdio/vprintf.c @@ -0,0 +1,50 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +int +vprintf(const char * __restrict fmt, __va_list ap) +{ + + return (vfprintf(stdout, fmt, ap)); +} diff --git a/lib/libc/stdio/vscanf.c b/lib/libc/stdio/vscanf.c new file mode 100644 index 0000000..cd273e3 --- /dev/null +++ b/lib/libc/stdio/vscanf.c @@ -0,0 +1,60 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Donn Seeley at UUNET Technologies, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <stdio.h> +#include "un-namespace.h" +#include "libc_private.h" +#include "local.h" + +int +vscanf(fmt, ap) + const char * __restrict fmt; + __va_list ap; +{ + int retval; + + FLOCKFILE(stdin); + retval = __svfscanf(stdin, fmt, ap); + FUNLOCKFILE(stdin); + return (retval); +} diff --git a/lib/libc/stdio/vsnprintf.c b/lib/libc/stdio/vsnprintf.c new file mode 100644 index 0000000..16d46ee --- /dev/null +++ b/lib/libc/stdio/vsnprintf.c @@ -0,0 +1,79 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vsnprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <limits.h> +#include <stdio.h> +#include "local.h" + +int +vsnprintf(char * __restrict str, size_t n, const char * __restrict fmt, + __va_list ap) +{ + size_t on; + int ret; + char dummy[2]; + FILE f; + struct __sFILEX ext; + + on = n; + if (n != 0) + n--; + if (n > INT_MAX) + n = INT_MAX; + /* Stdio internals do not deal correctly with zero length buffer */ + if (n == 0) { + if (on > 0) + *str = '\0'; + str = dummy; + n = 1; + } + f._file = -1; + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = n; + f._extra = &ext; + INITEXTRA(&f); + ret = __vfprintf(&f, fmt, ap); + if (on > 0) + *f._p = '\0'; + return (ret); +} diff --git a/lib/libc/stdio/vsprintf.c b/lib/libc/stdio/vsprintf.c new file mode 100644 index 0000000..b3150e5 --- /dev/null +++ b/lib/libc/stdio/vsprintf.c @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vsprintf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <limits.h> +#include "local.h" + +int +vsprintf(char * __restrict str, const char * __restrict fmt, __va_list ap) +{ + int ret; + FILE f; + struct __sFILEX ext; + + f._file = -1; + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = INT_MAX; + f._extra = &ext; + INITEXTRA(&f); + ret = __vfprintf(&f, fmt, ap); + *f._p = 0; + return (ret); +} diff --git a/lib/libc/stdio/vsscanf.c b/lib/libc/stdio/vsscanf.c new file mode 100644 index 0000000..40d4947 --- /dev/null +++ b/lib/libc/stdio/vsscanf.c @@ -0,0 +1,80 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Donn Seeley at UUNET Technologies, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <string.h> +#include "local.h" + +static int +eofread(void *, char *, int); + +/* ARGSUSED */ +static int +eofread(cookie, buf, len) + void *cookie; + char *buf; + int len; +{ + + return (0); +} + +int +vsscanf(str, fmt, ap) + const char * __restrict str; + const char * __restrict fmt; + __va_list ap; +{ + FILE f; + struct __sFILEX ext; + + f._file = -1; + f._flags = __SRD; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._r = strlen(str); + f._read = eofread; + f._ub._base = NULL; + f._lb._base = NULL; + f._extra = &ext; + INITEXTRA(&f); + return (__svfscanf(&f, fmt, ap)); +} diff --git a/lib/libc/stdio/vswprintf.c b/lib/libc/stdio/vswprintf.c new file mode 100644 index 0000000..1d8a64e --- /dev/null +++ b/lib/libc/stdio/vswprintf.c @@ -0,0 +1,96 @@ +/* $OpenBSD: vasprintf.c,v 1.4 1998/06/21 22:13:47 millert Exp $ */ + +/* + * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#if 0 +__FBSDID("FreeBSD: src/lib/libc/stdio/vasprintf.c,v 1.16 2002/08/21 16:19:57 mike Exp "); +#endif +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> +#include "local.h" + +int +vswprintf(wchar_t * __restrict s, size_t n, const wchar_t * __restrict fmt, + __va_list ap) +{ + static const mbstate_t initial; + mbstate_t mbs; + FILE f; + struct __sFILEX ext; + char *mbp; + int ret, sverrno; + size_t nwc; + + if (n == 0) { + errno = EINVAL; + return (-1); + } + + f._file = -1; + f._flags = __SWR | __SSTR | __SALC; + f._bf._base = f._p = (unsigned char *)malloc(128); + if (f._bf._base == NULL) { + errno = ENOMEM; + return (-1); + } + f._bf._size = f._w = 127; /* Leave room for the NUL */ + f._extra = &ext; + INITEXTRA(&f); + ret = __vfwprintf(&f, fmt, ap); + if (ret < 0) { + sverrno = errno; + free(f._bf._base); + errno = sverrno; + return (-1); + } + *f._p = '\0'; + mbp = f._bf._base; + /* + * XXX Undo the conversion from wide characters to multibyte that + * fputwc() did in __vfwprintf(). + */ + mbs = initial; + nwc = mbsrtowcs(s, (const char **)&mbp, n, &mbs); + free(f._bf._base); + if (nwc == (size_t)-1) { + errno = EILSEQ; + return (-1); + } + if (nwc == n) { + s[n - 1] = L'\0'; + errno = EOVERFLOW; + return (-1); + } + + return (ret); +} diff --git a/lib/libc/stdio/vswscanf.c b/lib/libc/stdio/vswscanf.c new file mode 100644 index 0000000..7b17e2f --- /dev/null +++ b/lib/libc/stdio/vswscanf.c @@ -0,0 +1,99 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Donn Seeley at UUNET Technologies, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +__FBSDID("FreeBSD: src/lib/libc/stdio/vsscanf.c,v 1.11 2002/08/21 16:19:57 mike Exp "); +#endif +__FBSDID("$FreeBSD$"); + +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include "local.h" + +static int eofread(void *, char *, int); + +static int +eofread(void *cookie, char *buf, int len) +{ + + return (0); +} + +int +vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, + va_list ap) +{ + static const mbstate_t initial; + mbstate_t mbs; + FILE f; + struct __sFILEX ext; + char *mbstr; + size_t mlen; + int r; + + /* + * XXX Convert the wide character string to multibyte, which + * __vfwscanf() will convert back to wide characters. + */ + if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) + return (EOF); + mbs = initial; + if ((mlen = wcsrtombs(mbstr, &str, SIZE_T_MAX, &mbs)) == (size_t)-1) { + free(mbstr); + return (EOF); + } + f._file = -1; + f._flags = __SRD; + f._bf._base = f._p = (unsigned char *)mbstr; + f._bf._size = f._r = mlen; + f._read = eofread; + f._ub._base = NULL; + f._lb._base = NULL; + f._extra = &ext; + INITEXTRA(&f); + r = __vfwscanf(&f, fmt, ap); + free(mbstr); + + return (r); +} diff --git a/lib/libc/stdio/vwprintf.c b/lib/libc/stdio/vwprintf.c new file mode 100644 index 0000000..91212a8 --- /dev/null +++ b/lib/libc/stdio/vwprintf.c @@ -0,0 +1,39 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +vwprintf(const wchar_t * __restrict fmt, va_list ap) +{ + + return (vfwprintf(stdout, fmt, ap)); +} diff --git a/lib/libc/stdio/vwscanf.c b/lib/libc/stdio/vwscanf.c new file mode 100644 index 0000000..4a21af2 --- /dev/null +++ b/lib/libc/stdio/vwscanf.c @@ -0,0 +1,39 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +vwscanf(const wchar_t * __restrict fmt, va_list ap) +{ + + return (vfwscanf(stdin, fmt, ap)); +} diff --git a/lib/libc/stdio/wbuf.c b/lib/libc/stdio/wbuf.c new file mode 100644 index 0000000..4a12305 --- /dev/null +++ b/lib/libc/stdio/wbuf.c @@ -0,0 +1,95 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)wbuf.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include "local.h" + +/* + * Write the given character into the (probably full) buffer for + * the given file. Flush the buffer out if it is or becomes full, + * or if c=='\n' and the file is line buffered. + * + * Non-MT-safe + */ +int +__swbuf(c, fp) + int c; + FILE *fp; +{ + int n; + + /* + * In case we cannot write, or longjmp takes us out early, + * make sure _w is 0 (if fully- or un-buffered) or -_bf._size + * (if line buffered) so that we will get called again. + * If we did not do this, a sufficient number of putc() + * calls might wrap _w from negative to positive. + */ + fp->_w = fp->_lbfsize; + if (prepwrite(fp) != 0) + return (EOF); + c = (unsigned char)c; + + ORIENT(fp, -1); + + /* + * If it is completely full, flush it out. Then, in any case, + * stuff c into the buffer. If this causes the buffer to fill + * completely, or if c is '\n' and the file is line buffered, + * flush it (perhaps a second time). The second flush will always + * happen on unbuffered streams, where _bf._size==1; fflush() + * guarantees that putc() will always call wbuf() by setting _w + * to 0, so we need not do anything else. + */ + n = fp->_p - fp->_bf._base; + if (n >= fp->_bf._size) { + if (__fflush(fp)) + return (EOF); + n = 0; + } + fp->_w--; + *fp->_p++ = c; + if (++n == fp->_bf._size || (fp->_flags & __SLBF && c == '\n')) + if (__fflush(fp)) + return (EOF); + return (c); +} diff --git a/lib/libc/stdio/wprintf.3 b/lib/libc/stdio/wprintf.3 new file mode 100644 index 0000000..7a3f952b --- /dev/null +++ b/lib/libc/stdio/wprintf.3 @@ -0,0 +1,622 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)printf.3 8.1 (Berkeley) 6/4/93 +.\" FreeBSD: src/lib/libc/stdio/printf.3,v 1.47 2002/09/06 11:23:55 tjr Exp +.\" $FreeBSD$ +.\" +.Dd July 5, 2003 +.Dt WPRINTF 3 +.Os +.Sh NAME +.Nm wprintf , fwprintf , swprintf , +.Nm vwprintf , vfwprintf , vswprintf +.Nd formatted wide character output conversion +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft int +.Fn fwprintf "FILE * restrict stream" "const wchar_t * restrict format" ... +.Ft int +.Fn swprintf "wchar_t * restrict ws" "size_t n" "const wchar_t * restrict format" ... +.Ft int +.Fn wprintf "const wchar_t * restrict format" ... +.In stdarg.h +.Ft int +.Fn vfwprintf "FILE * restrict stream" "const wchar_t * restrict" "va_list ap" +.Ft int +.Fn vswprintf "wchar_t * restrict ws" "size_t n" "const wchar_t *restrict format" "va_list ap" +.Ft int +.Fn vwprintf "const wchar_t * restrict format" "va_list ap" +.Sh DESCRIPTION +The +.Fn wprintf +family of functions produces output according to a +.Fa format +as described below. +The +.Fn wprintf +and +.Fn vwprintf +functions +write output to +.Dv stdout , +the standard output stream; +.Fn fwprintf +and +.Fn vfwprintf +write output to the given output +.Fa stream ; +.Fn swprintf +and +.Fn vswprintf +write to the wide character string +.Fa ws . +.Pp +These functions write the output under the control of a +.Fa format +string that specifies how subsequent arguments +(or arguments accessed via the variable-length argument facilities of +.Xr stdarg 3 ) +are converted for output. +.Pp +These functions return the number of characters printed +(not including the trailing +.Ql \e0 +used to end output to strings). +.Pp +The +.Fn swprintf +and +.Fn vswprintf +functions will fail if +.Fa n +or more wide characters were requested to be written, +.Pp +The format string is composed of zero or more directives: +ordinary +characters (not +.Cm % ) , +which are copied unchanged to the output stream; +and conversion specifications, each of which results +in fetching zero or more subsequent arguments. +Each conversion specification is introduced by +the +.Cm % +character. +The arguments must correspond properly (after type promotion) +with the conversion specifier. +After the +.Cm % , +the following appear in sequence: +.Bl -bullet +.It +An optional field, consisting of a decimal digit string followed by a +.Cm $ , +specifying the next argument to access. +If this field is not provided, the argument following the last +argument accessed will be used. +Arguments are numbered starting at +.Cm 1 . +If unaccessed arguments in the format string are interspersed with ones that +are accessed the results will be indeterminate. +.It +Zero or more of the following flags: +.Bl -tag -width ".So \ Sc (space)" +.It Sq Cm # +The value should be converted to an +.Dq alternate form . +For +.Cm c , d , i , n , p , s , +and +.Cm u +conversions, this option has no effect. +For +.Cm o +conversions, the precision of the number is increased to force the first +character of the output string to a zero (except if a zero value is printed +with an explicit precision of zero). +For +.Cm x +and +.Cm X +conversions, a non-zero result has the string +.Ql 0x +(or +.Ql 0X +for +.Cm X +conversions) prepended to it. +For +.Cm a , A , e , E , f , F , g , +and +.Cm G +conversions, the result will always contain a decimal point, even if no +digits follow it (normally, a decimal point appears in the results of +those conversions only if a digit follows). +For +.Cm g +and +.Cm G +conversions, trailing zeros are not removed from the result as they +would otherwise be. +.It So Cm 0 Sc (zero) +Zero padding. +For all conversions except +.Cm n , +the converted value is padded on the left with zeros rather than blanks. +If a precision is given with a numeric conversion +.Cm ( d , i , o , u , i , x , +and +.Cm X ) , +the +.Cm 0 +flag is ignored. +.It Sq Cm \- +A negative field width flag; +the converted value is to be left adjusted on the field boundary. +Except for +.Cm n +conversions, the converted value is padded on the right with blanks, +rather than on the left with blanks or zeros. +A +.Cm \- +overrides a +.Cm 0 +if both are given. +.It So "\ " Sc (space) +A blank should be left before a positive number +produced by a signed conversion +.Cm ( a , A , d , e , E , f , F , g , G , +or +.Cm i ) . +.It Sq Cm + +A sign must always be placed before a +number produced by a signed conversion. +A +.Cm + +overrides a space if both are used. +.It Sq Cm ' +Decimal conversions +.Cm ( d , u , +or +.Cm i ) +or the integral portion of a floating point conversion +.Cm ( f +or +.Cm F ) +should be grouped and separated by thousands using +the non-monetary separator returned by +.Xr localeconv 3 . +.El +.It +An optional decimal digit string specifying a minimum field width. +If the converted value has fewer characters than the field width, it will +be padded with spaces on the left (or right, if the left-adjustment +flag has been given) to fill out +the field width. +.It +An optional precision, in the form of a period +.Cm \&. +followed by an +optional digit string. +If the digit string is omitted, the precision is taken as zero. +This gives the minimum number of digits to appear for +.Cm d , i , o , u , x , +and +.Cm X +conversions, the number of digits to appear after the decimal-point for +.Cm a , A , e , E , f , +and +.Cm F +conversions, the maximum number of significant digits for +.Cm g +and +.Cm G +conversions, or the maximum number of characters to be printed from a +string for +.Cm s +conversions. +.It +An optional length modifier, that specifies the size of the argument. +The following length modifiers are valid for the +.Cm d , i , n , o , u , x , +or +.Cm X +conversion: +.Bl -column ".Cm q Em (deprecated)" ".Vt signed char" ".Vt unsigned long long" ".Vt long long *" +.It Sy Modifier Ta Cm d , i Ta Cm o , u , x , X Ta Cm n +.It Cm hh Ta Vt "signed char" Ta Vt "unsigned char" Ta Vt "signed char *" +.It Cm h Ta Vt short Ta Vt "unsigned short" Ta Vt "short *" +.It Cm l No (ell) Ta Vt long Ta Vt "unsigned long" Ta Vt "long *" +.It Cm ll No (ell ell) Ta Vt "long long" Ta Vt "unsigned long long" Ta Vt "long long *" +.It Cm j Ta Vt intmax_t Ta Vt uintmax_t Ta Vt "intmax_t *" +.It Cm t Ta Vt ptrdiff_t Ta (see note) Ta Vt "ptrdiff_t *" +.It Cm z Ta (see note) Ta Vt size_t Ta (see note) +.It Cm q Em (deprecated) Ta Vt quad_t Ta Vt u_quad_t Ta Vt "quad_t *" +.El +.Pp +Note: +the +.Cm t +modifier, when applied to a +.Cm o , u , x , +or +.Cm X +conversion, indicates that the argument is of an unsigned type +equivalent in size to a +.Vt ptrdiff_t . +The +.Cm z +modifier, when applied to a +.Cm d +or +.Cm i +conversion, indicates that the argument is of a signed type equivalent in +size to a +.Vt size_t . +Similarly, when applied to an +.Cm n +conversion, it indicates that the argument is a pointer to a signed type +equivalent in size to a +.Vt size_t . +.Pp +The following length modifier is valid for the +.Cm a , A , e , E , f , F , g , +or +.Cm G +conversion: +.Bl -column ".Sy Modifier" ".Cm a , A , e , E , f , F , g , G" +.It Sy Modifier Ta Cm a , A , e , E , f , F , g , G +.It Cm L Ta Vt "long double" +.El +.Pp +The following length modifier is valid for the +.Cm c +or +.Cm s +conversion: +.Bl -column ".Sy Modifier" ".Vt wint_t" ".Vt wchar_t *" +.It Sy Modifier Ta Cm c Ta Cm s +.It Cm l No (ell) Ta Vt wint_t Ta Vt "wchar_t *" +.El +.It +A character that specifies the type of conversion to be applied. +.El +.Pp +A field width or precision, or both, may be indicated by +an asterisk +.Ql * +or an asterisk followed by one or more decimal digits and a +.Ql $ +instead of a +digit string. +In this case, an +.Vt int +argument supplies the field width or precision. +A negative field width is treated as a left adjustment flag followed by a +positive field width; a negative precision is treated as though it were +missing. +If a single format directive mixes positional +.Pq Li nn$ +and non-positional arguments, the results are undefined. +.Pp +The conversion specifiers and their meanings are: +.Bl -tag -width ".Cm diouxX" +.It Cm diouxX +The +.Vt int +(or appropriate variant) argument is converted to signed decimal +.Cm ( d +and +.Cm i ) , +unsigned octal +.Pq Cm o , +unsigned decimal +.Pq Cm u , +or unsigned hexadecimal +.Cm ( x +and +.Cm X ) +notation. +The letters +.Dq Li abcdef +are used for +.Cm x +conversions; the letters +.Dq Li ABCDEF +are used for +.Cm X +conversions. +The precision, if any, gives the minimum number of digits that must +appear; if the converted value requires fewer digits, it is padded on +the left with zeros. +.It Cm DOU +The +.Vt "long int" +argument is converted to signed decimal, unsigned octal, or unsigned +decimal, as if the format had been +.Cm ld , lo , +or +.Cm lu +respectively. +These conversion characters are deprecated, and will eventually disappear. +.It Cm eE +The +.Vt double +argument is rounded and converted in the style +.Sm off +.Oo \- Oc Ar d Li \&. Ar ddd Li e \\*[Pm] Ar dd +.Sm on +where there is one digit before the +decimal-point character +and the number of digits after it is equal to the precision; +if the precision is missing, +it is taken as 6; if the precision is +zero, no decimal-point character appears. +An +.Cm E +conversion uses the letter +.Ql E +(rather than +.Ql e ) +to introduce the exponent. +The exponent always contains at least two digits; if the value is zero, +the exponent is 00. +.Pp +For +.Cm a , A , e , E , f , F , g , +and +.Cm G +conversions, positive and negative infinity are represented as +.Li inf +and +.Li -inf +respectively when using the lowercase conversion character, and +.Li INF +and +.Li -INF +respectively when using the uppercase conversion character. +Similarly, NaN is represented as +.Li nan +when using the lowercase conversion, and +.Li NAN +when using the uppercase conversion. +.It Cm fF +The +.Vt double +argument is rounded and converted to decimal notation in the style +.Sm off +.Oo \- Oc Ar ddd Li \&. Ar ddd , +.Sm on +where the number of digits after the decimal-point character +is equal to the precision specification. +If the precision is missing, it is taken as 6; if the precision is +explicitly zero, no decimal-point character appears. +If a decimal point appears, at least one digit appears before it. +.It Cm gG +The +.Vt double +argument is converted in style +.Cm f +or +.Cm e +(or +.Cm F +or +.Cm E +for +.Cm G +conversions). +The precision specifies the number of significant digits. +If the precision is missing, 6 digits are given; if the precision is zero, +it is treated as 1. +Style +.Cm e +is used if the exponent from its conversion is less than \-4 or greater than +or equal to the precision. +Trailing zeros are removed from the fractional part of the result; a +decimal point appears only if it is followed by at least one digit. +.It Cm aA +The +.Vt double +argument is converted to hexadecimal notation in the style +.Sm off +.Oo \- Oc Li 0x Ar h Li \&. Ar hhhp Oo \\*[Pm] Oc Ar d , +.Sm on +where the number of digits after the hexadecimal-point character +is equal to the precision specification. +If the precision is missing, it is taken as enough to exactly +represent the floating-point number; if the precision is +explicitly zero, no hexadecimal-point character appears. +This is an exact conversion of the mantissa+exponent internal +floating point representation; the +.Sm off +.Oo \- Oc Li 0x Ar h Li \&. Ar hhh +.Sm on +portion represents exactly the mantissa; only denormalized +mantissas have a zero value to the left of the hexadecimal +point. +The +.Cm p +is a literal character +.Ql p ; +the exponent is preceded by a positive or negative sign +and is represented in decimal, using only enough characters +to represent the exponent. +The +.Cm A +conversion uses the prefix +.Dq Li 0X +(rather than +.Dq Li 0x ) , +the letters +.Dq Li ABCDEF +(rather than +.Dq Li abcdef ) +to represent the hex digits, and the letter +.Ql P +(rather than +.Ql p ) +to separate the mantissa and exponent. +.It Cm C +Treated as +.Cm c +with the +.Cm l +(ell) modifier. +.It Cm c +The +.Vt int +argument is converted to an +.Vt "unsigned char" , +then to a +.Vt wchar_t +as if by +.Xr btowc 3 , +and the resulting character is written. +.Pp +If the +.Cm l +(ell) modifier is used, the +.Vt wint_t +argument is converted to a +.Vt wchar_t +and written. +.It Cm S +Treated as +.Cm s +with the +.Cm l +(ell) modifier. +.It Cm s +The +.Vt "char *" +argument is expected to be a pointer to an array of character type (pointer +to a string) containing a multibyte sequence. +Characters from the array are converted to wide characters and written up to +(but not including) +a terminating +.Dv NUL +character; +if a precision is specified, no more than the number specified are +written. +If a precision is given, no null character +need be present; if the precision is not specified, or is greater than +the size of the array, the array must contain a terminating +.Dv NUL +character. +.Pp +If the +.Cm l +(ell) modifier is used, the +.Vt "wchar_t *" +argument is expected to be a pointer to an array of wide characters +(pointer to a wide string). +Each wide character in the string +is written. +Wide characters from the array are written up to (but not including) +a terminating wide +.Dv NUL +character; +if a precision is specified, no more than the number specified are +written (including shift sequences). +If a precision is given, no null character +need be present; if the precision is not specified, or is greater than +the number of characters in +the string, the array must contain a terminating wide +.Dv NUL +character. +.It Cm p +The +.Vt "void *" +pointer argument is printed in hexadecimal (as if by +.Ql %#x +or +.Ql %#lx ) . +.It Cm n +The number of characters written so far is stored into the +integer indicated by the +.Vt "int *" +(or variant) pointer argument. +No argument is converted. +.It Cm % +A +.Ql % +is written. +No argument is converted. +The complete conversion specification +is +.Ql %% . +.El +.Pp +The decimal point +character is defined in the program's locale (category +.Dv LC_NUMERIC ) . +.Pp +In no case does a non-existent or small field width cause truncation of +a numeric field; if the result of a conversion is wider than the field +width, the +field is expanded to contain the conversion result. +.Sh SECURITY CONSIDERATIONS +Refer to +.Xr printf 3 . +.Sh SEE ALSO +.Xr btowc 3 , +.Xr fputws 3 , +.Xr printf 3 , +.Xr putwc 3 , +.Xr setlocale 3 , +.Xr wcsrtombs 3 , +.Xr wscanf 3 +.Sh STANDARDS +Subject to the caveats noted in the +.Sx BUGS +section +of +.Xr printf 3 , +the +.Fn wprintf , +.Fn fwprintf , +.Fn swprintf , +.Fn vwprintf , +.Fn vfwprintf +and +.Fn vswprintf +functions +conform to +.St -isoC-99 . diff --git a/lib/libc/stdio/wprintf.c b/lib/libc/stdio/wprintf.c new file mode 100644 index 0000000..92426f6 --- /dev/null +++ b/lib/libc/stdio/wprintf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +wprintf(const wchar_t * __restrict fmt, ...) +{ + int ret; + va_list ap; + + va_start(ap, fmt); + ret = vfwprintf(stdout, fmt, ap); + va_end(ap); + + return (ret); +} diff --git a/lib/libc/stdio/wscanf.3 b/lib/libc/stdio/wscanf.3 new file mode 100644 index 0000000..bc8729f --- /dev/null +++ b/lib/libc/stdio/wscanf.3 @@ -0,0 +1,483 @@ +.\" Copyright (c) 1990, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Chris Torek and the American National Standards Committee X3, +.\" on Information Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)scanf.3 8.2 (Berkeley) 12/11/93 +.\" FreeBSD: src/lib/libc/stdio/scanf.3,v 1.24 2003/06/28 09:03:25 das Exp +.\" $FreeBSD$ +.\" +.Dd July 5, 2003 +.Dt WSCANF 3 +.Os +.Sh NAME +.Nm wscanf , +.Nm fwscanf , +.Nm swscanf , +.Nm vwscanf , +.Nm vswscanf , +.Nm vfwscanf +.Nd wide character input format conversion +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In stdio.h +.In wchar.h +.Ft int +.Fn wscanf "const wchar_t * restrict format" ... +.Ft int +.Fn fwscanf "FILE * restrict stream" "const wchar_t * restrict format" ... +.Ft int +.Fn swscanf "const wchar_t * restrict str" "const wchar_t * restrict format" ... +.In stdarg.h +.Ft int +.Fn vwscanf "const wchar_t * restrict format" "va_list ap" +.Ft int +.Fn vswscanf "const wchar_t * restrict str" "const wchar_t * restrict format" "va_list ap" +.Ft int +.Fn vfwscanf "FILE * restrict stream" "const wchar_t * restrict format" "va_list ap" +.Sh DESCRIPTION +The +.Fn wscanf +family of functions scans input according to a +.Fa format +as described below. +This format may contain +.Em conversion specifiers ; +the results from such conversions, if any, +are stored through the +.Em pointer +arguments. +The +.Fn wscanf +function +reads input from the standard input stream +.Dv stdin , +.Fn fwscanf +reads input from the stream pointer +.Fa stream , +and +.Fn swscanf +reads its input from the wide character string pointed to by +.Fa str . +The +.Fn vfwscanf +function +is analogous to +.Xr vfwprintf 3 +and reads input from the stream pointer +.Fa stream +using a variable argument list of pointers (see +.Xr stdarg 3 ) . +The +.Fn vwscanf +function scans a variable argument list from the standard input and +the +.Fn vswscanf +function scans it from a wide character string; +these are analogous to +the +.Fn vwprintf +and +.Fn vswprintf +functions respectively. +Each successive +.Em pointer +argument must correspond properly with +each successive conversion specifier +(but see the +.Cm * +conversion below). +All conversions are introduced by the +.Cm % +(percent sign) character. +The +.Fa format +string +may also contain other characters. +White space (such as blanks, tabs, or newlines) in the +.Fa format +string match any amount of white space, including none, in the input. +Everything else +matches only itself. +Scanning stops +when an input character does not match such a format character. +Scanning also stops +when an input conversion cannot be made (see below). +.Sh CONVERSIONS +Following the +.Cm % +character introducing a conversion +there may be a number of +.Em flag +characters, as follows: +.Bl -tag -width ".Cm l No (ell)" +.It Cm * +Suppresses assignment. +The conversion that follows occurs as usual, but no pointer is used; +the result of the conversion is simply discarded. +.It Cm hh +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt char +(rather than +.Vt int ) . +.It Cm h +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "short int" +(rather than +.Vt int ) . +.It Cm l No (ell) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long int" +(rather than +.Vt int ) , +that the conversion will be one of +.Cm a , e , f , +or +.Cm g +and the next pointer is a pointer to +.Vt double +(rather than +.Vt float ) , +or that the conversion will be one of +.Cm c +or +.Cm s +and the next pointer is a pointer to an array of +.Vt wchar_t +(rather than +.Vt char ) . +.It Cm ll No (ell ell) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long long int" +(rather than +.Vt int ) . +.It Cm L +Indicates that the conversion will be one of +.Cm a , e , f , +or +.Cm g +and the next pointer is a pointer to +.Vt "long double" . +.It Cm j +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt intmax_t +(rather than +.Vt int ) . +.It Cm t +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt ptrdiff_t +(rather than +.Vt int ) . +.It Cm z +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt size_t +(rather than +.Vt int ) . +.It Cm q +(deprecated.) +Indicates that the conversion will be one of +.Cm dioux +or +.Cm n +and the next pointer is a pointer to a +.Vt "long long int" +(rather than +.Vt int ) . +.El +.Pp +In addition to these flags, +there may be an optional maximum field width, +expressed as a decimal integer, +between the +.Cm % +and the conversion. +If no width is given, +a default of +.Dq infinity +is used (with one exception, below); +otherwise at most this many characters are scanned +in processing the conversion. +Before conversion begins, +most conversions skip white space; +this white space is not counted against the field width. +.Pp +The following conversions are available: +.Bl -tag -width XXXX +.It Cm % +Matches a literal +.Ql % . +That is, +.Dq Li %% +in the format string +matches a single input +.Ql % +character. +No conversion is done, and assignment does not occur. +.It Cm d +Matches an optionally signed decimal integer; +the next pointer must be a pointer to +.Vt int . +.It Cm i +Matches an optionally signed integer; +the next pointer must be a pointer to +.Vt int . +The integer is read in base 16 if it begins +with +.Ql 0x +or +.Ql 0X , +in base 8 if it begins with +.Ql 0 , +and in base 10 otherwise. +Only characters that correspond to the base are used. +.It Cm o +Matches an octal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm u +Matches an optionally signed decimal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm x , X +Matches an optionally signed hexadecimal integer; +the next pointer must be a pointer to +.Vt "unsigned int" . +.It Cm a , A , e , E , f , F , g , G +Matches a floating-point number in the style of +.Xr wcstod 3 . +The next pointer must be a pointer to +.Vt float +(unless +.Cm l +or +.Cm L +is specified.) +.It Cm s +Matches a sequence of non-white-space wide characters; +the next pointer must be a pointer to +.Vt char , +and the array must be large enough to accept the multibyte representation +of all the sequence and the +terminating +.Dv NUL +character. +The input string stops at white space +or at the maximum field width, whichever occurs first. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed. +.It Cm S +The same as +.Cm ls . +.It Cm c +Matches a sequence of +.Em width +count +wide characters (default 1); +the next pointer must be a pointer to +.Vt char , +and there must be enough room for the multibyte representation +of all the characters +(no terminating +.Dv NUL +is added). +The usual skip of leading white space is suppressed. +To skip white space first, use an explicit space in the format. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed. +.It Cm C +The same as +.Cm lc . +.It Cm \&[ +Matches a nonempty sequence of characters from the specified set +of accepted characters; +the next pointer must be a pointer to +.Vt char , +and there must be enough room for the multibyte representation of +all the characters in the string, +plus a terminating +.Dv NUL +character. +The usual skip of leading white space is suppressed. +The string is to be made up of characters in +(or not in) +a particular set; +the set is defined by the characters between the open bracket +.Cm [ +character +and a close bracket +.Cm ] +character. +The set +.Em excludes +those characters +if the first character after the open bracket is a circumflex +.Cm ^ . +To include a close bracket in the set, +make it the first character after the open bracket +or the circumflex; +any other position will end the set. +To include a hyphen in the set, +make it the last character before the final close bracket; +some implementations of +.Fn wscanf +use +.Dq Li A-Z +to represent the range of characters between +.Ql A +and +.Ql Z . +The string ends with the appearance of a character not in the +(or, with a circumflex, in) set +or when the field width runs out. +.Pp +If an +.Cm l +qualifier is present, the next pointer must be a pointer to +.Vt wchar_t , +into which the input will be placed. +.It Cm p +Matches a pointer value (as printed by +.Ql %p +in +.Xr wprintf 3 ) ; +the next pointer must be a pointer to +.Vt void . +.It Cm n +Nothing is expected; +instead, the number of characters consumed thus far from the input +is stored through the next pointer, +which must be a pointer to +.Vt int . +This is +.Em not +a conversion, although it can be suppressed with the +.Cm * +flag. +.El +.Pp +The decimal point +character is defined in the program's locale (category +.Dv LC_NUMERIC ) . +.Pp +For backwards compatibility, a +.Dq conversion +of +.Ql %\e0 +causes an immediate return of +.Dv EOF . +.Sh RETURN VALUES +These +functions +return +the number of input items assigned, which can be fewer than provided +for, or even zero, in the event of a matching failure. +Zero +indicates that, while there was input available, +no conversions were assigned; +typically this is due to an invalid input character, +such as an alphabetic character for a +.Ql %d +conversion. +The value +.Dv EOF +is returned if an input failure occurs before any conversion such as an +end-of-file occurs. +If an error or end-of-file occurs after conversion +has begun, +the number of conversions which were successfully completed is returned. +.Sh SEE ALSO +.Xr fgetwc 3 , +.Xr scanf 3 , +.Xr wcrtomb 3 , +.Xr wcstod 3 , +.Xr wcstol 3 , +.Xr wcstoul 3 , +.Xr wprintf 3 +.Sh STANDARDS +The +.Fn fwscanf , +.Fn wscanf , +.Fn swscanf , +.Fn vfwscanf , +.Fn vwscanf +and +.Fn vswscanf +functions +conform to +.St -isoC-99 . +.Sh BUGS +In addition to the bugs documented in +.Xr scanf 3 , +.Fn wscanf +does not support the +.Dq Li A-Z +notation for specifying character ranges with the character +class conversion +.Pq Sq Cm %[ . diff --git a/lib/libc/stdio/wscanf.c b/lib/libc/stdio/wscanf.c new file mode 100644 index 0000000..5e27b40 --- /dev/null +++ b/lib/libc/stdio/wscanf.c @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 2002 Tim J. Robbins + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> + +int +wscanf(const wchar_t * __restrict fmt, ...) +{ + va_list ap; + int r; + + va_start(ap, fmt); + r = vfwscanf(stdin, fmt, ap); + va_end(ap); + + return (r); +} diff --git a/lib/libc/stdio/wsetup.c b/lib/libc/stdio/wsetup.c new file mode 100644 index 0000000..4c18dd4 --- /dev/null +++ b/lib/libc/stdio/wsetup.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)wsetup.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include "local.h" + +/* + * Various output routines call wsetup to be sure it is safe to write, + * because either _flags does not include __SWR, or _buf is NULL. + * _wsetup returns 0 if OK to write; otherwise, it returns EOF and sets errno. + */ +int +__swsetup(fp) + FILE *fp; +{ + /* make sure stdio is set up */ + if (!__sdidinit) + __sinit(); + + /* + * If we are not writing, we had better be reading and writing. + */ + if ((fp->_flags & __SWR) == 0) { + if ((fp->_flags & __SRW) == 0) { + errno = EBADF; + return (EOF); + } + if (fp->_flags & __SRD) { + /* clobber any ungetc data */ + if (HASUB(fp)) + FREEUB(fp); + fp->_flags &= ~(__SRD|__SEOF); + fp->_r = 0; + fp->_p = fp->_bf._base; + } + fp->_flags |= __SWR; + } + + /* + * Make a buffer if necessary, then set _w. + */ + if (fp->_bf._base == NULL) + __smakebuf(fp); + if (fp->_flags & __SLBF) { + /* + * It is line buffered, so make _lbfsize be -_bufsize + * for the putc() macro. We will change _lbfsize back + * to 0 whenever we turn off __SWR. + */ + fp->_w = 0; + fp->_lbfsize = -fp->_bf._size; + } else + fp->_w = fp->_flags & __SNBF ? 0 : fp->_bf._size; + return (0); +} diff --git a/lib/libc/stdio/xprintf.c b/lib/libc/stdio/xprintf.c new file mode 100644 index 0000000..8d529fc --- /dev/null +++ b/lib/libc/stdio/xprintf.c @@ -0,0 +1,688 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <err.h> +#include <sys/types.h> +#include <stdio.h> +#include <stddef.h> +#include <stdlib.h> +#include <locale.h> +#include <stdint.h> +#include <assert.h> +#include <stdarg.h> +#include <namespace.h> +#include <string.h> +#include <wchar.h> +#include <un-namespace.h> + +#include "printf.h" +#include "fvwrite.h" + +int __use_xprintf = -1; + +/* private stuff -----------------------------------------------------*/ + +union arg { + int intarg; + long longarg; + intmax_t intmaxarg; +#ifndef NO_FLOATING_POINT + double doublearg; + long double longdoublearg; +#endif + wint_t wintarg; + char *pchararg; + wchar_t *pwchararg; + void *pvoidarg; +}; + +/* + * Macros for converting digits to letters and vice versa + */ +#define to_digit(c) ((c) - '0') +#define is_digit(c) (((unsigned)to_digit(c)) <= 9) + +/* various globals ---------------------------------------------------*/ + +const char __lowercase_hex[17] = "0123456789abcdef?"; /*lint !e784 */ +const char __uppercase_hex[17] = "0123456789ABCDEF?"; /*lint !e784 */ + +#define PADSIZE 16 +static char blanks[PADSIZE] = + {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; +static char zeroes[PADSIZE] = + {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; + +/* printing and padding functions ------------------------------------*/ + +#define NIOV 8 + +struct __printf_io { + FILE *fp; + struct __suio uio; + struct __siov iov[NIOV]; + struct __siov *iovp; +}; + +static void +__printf_init(struct __printf_io *io) +{ + + io->uio.uio_iov = io->iovp = &io->iov[0]; + io->uio.uio_resid = 0; + io->uio.uio_iovcnt = 0; +} + +void +__printf_flush(struct __printf_io *io) +{ + + __sfvwrite(io->fp, &io->uio); + __printf_init(io); +} + +int +__printf_puts(struct __printf_io *io, const void *ptr, int len) +{ + + + if (io->fp->_flags & __SERR) + return (0); + if (len == 0) + return (0); + io->iovp->iov_base = __DECONST(void *, ptr); + io->iovp->iov_len = len; + io->uio.uio_resid += len; + io->iovp++; + io->uio.uio_iovcnt++; + if (io->uio.uio_iovcnt >= NIOV) + __printf_flush(io); + return (len); +} + +int +__printf_pad(struct __printf_io *io, int howmany, int zero) +{ + int n; + const char *with; + int ret = 0; + + if (zero) + with = zeroes; + else + with = blanks; + + if ((n = (howmany)) > 0) { + while (n > PADSIZE) { + ret += __printf_puts(io, with, PADSIZE); + n -= PADSIZE; + } + ret += __printf_puts(io, with, n); + } + return (ret); +} + +int +__printf_out(struct __printf_io *io, const struct printf_info *pi, const void *ptr, int len) +{ + int ret = 0; + + if ((!pi->left) && pi->width > len) + ret += __printf_pad(io, pi->width - len, pi->pad == '0'); + ret += __printf_puts(io, ptr, len); + if (pi->left && pi->width > len) + ret += __printf_pad(io, pi->width - len, pi->pad == '0'); + return (ret); +} + + +/* percent handling -------------------------------------------------*/ + +static int +__printf_arginfo_pct(const struct printf_info *pi __unused, size_t n __unused, int *argt __unused) +{ + + return (0); +} + +static int +__printf_render_pct(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg __unused) +{ + + return (__printf_puts(io, "%", 1)); +} + +/* 'n' ---------------------------------------------------------------*/ + +static int +__printf_arginfo_n(const struct printf_info *pi, size_t n, int *argt) +{ + + assert(n >= 1); + argt[0] = PA_POINTER; + return (1); +} + +/* + * This is a printf_render so that all output has been flushed before it + * gets called. + */ + +static int +__printf_render_n(FILE *io __unused, const struct printf_info *pi, const void *const *arg) +{ + + if (pi->is_char) + **((signed char **)arg[0]) = (signed char)pi->sofar; + else if (pi->is_short) + **((short **)arg[0]) = (short)pi->sofar; + else if (pi->is_long) + **((long **)arg[0]) = pi->sofar; + else if (pi->is_long_double) + **((long long **)arg[0]) = pi->sofar; + else if (pi->is_intmax) + **((intmax_t **)arg[0]) = pi->sofar; + else if (pi->is_ptrdiff) + **((ptrdiff_t **)arg[0]) = pi->sofar; + else if (pi->is_quad) + **((quad_t **)arg[0]) = pi->sofar; + else if (pi->is_size) + **((size_t **)arg[0]) = pi->sofar; + else + **((int **)arg[0]) = pi->sofar; + + return (0); +} + +/* table -------------------------------------------------------------*/ + +/*lint -esym(785, printf_tbl) */ +static struct { + printf_arginfo_function *arginfo; + printf_function *gnurender; + printf_render *render; +} printf_tbl[256] = { + ['%'] = { __printf_arginfo_pct, NULL, __printf_render_pct }, + ['A'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['C'] = { __printf_arginfo_chr, NULL, __printf_render_chr }, + ['E'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['F'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['G'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['S'] = { __printf_arginfo_str, NULL, __printf_render_str }, + ['X'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['a'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['c'] = { __printf_arginfo_chr, NULL, __printf_render_chr }, + ['d'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['e'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['f'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['g'] = { __printf_arginfo_float, NULL, __printf_render_float }, + ['i'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['n'] = { __printf_arginfo_n, __printf_render_n, NULL }, + ['o'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['p'] = { __printf_arginfo_ptr, NULL, __printf_render_ptr }, + ['q'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['s'] = { __printf_arginfo_str, NULL, __printf_render_str }, + ['u'] = { __printf_arginfo_int, NULL, __printf_render_int }, + ['x'] = { __printf_arginfo_int, NULL, __printf_render_int }, +}; + + +static int +__v2printf(FILE *fp, const char *fmt0, unsigned pct, const va_list ap) +{ + struct printf_info *pi, *pil; + const char *fmt; + int ch; + struct printf_info pia[pct + 10]; + int argt[pct + 10]; + union arg args[pct + 10]; + int nextarg; + int maxarg; + int ret = 0; + int n; + struct __printf_io io; + + __printf_init(&io); + io.fp = fp; + + fmt = fmt0; + maxarg = 0; + nextarg = 1; + memset(argt, 0, sizeof argt); + for (pi = pia; ; pi++) { + memset(pi, 0, sizeof *pi); + pil = pi; + if (*fmt == '\0') + break; + pil = pi + 1; + pi->prec = -1; + pi->pad = ' '; + pi->begin = pi->end = fmt; + while (*fmt != '\0' && *fmt != '%') + pi->end = ++fmt; + if (*fmt == '\0') + break; + fmt++; + for (;;) { + pi->spec = *fmt; + switch (pi->spec) { + case ' ': + /*- + * ``If the space and + flags both appear, the space + * flag will be ignored.'' + * -- ANSI X3J11 + */ + if (pi->showsign == 0) + pi->showsign = ' '; + fmt++; + continue; + case '#': + pi->alt = 1; + fmt++; + continue; + case '.': + pi->prec = 0; + fmt++; + if (*fmt == '*') { + fmt++; + pi->get_prec = nextarg; + argt[nextarg++] = PA_INT; + continue; + } + while (*fmt != '\0' && is_digit(*fmt)) { + pi->prec *= 10; + pi->prec += to_digit(*fmt); + fmt++; + } + continue; + case '-': + pi->left = 1; + fmt++; + continue; + case '+': + pi->showsign = '+'; + fmt++; + continue; + case '*': + fmt++; + pi->get_width = nextarg; + argt[nextarg++] = PA_INT; + continue; + case '%': + fmt++; + break; + case '\'': + pi->group = 1; + fmt++; + continue; + case '0': + /*- + * ``Note that 0 is taken as a flag, not as the + * beginning of a field width.'' + * -- ANSI X3J11 + */ + pi->pad = '0'; + fmt++; + continue; + case '1': case '2': case '3': + case '4': case '5': case '6': + case '7': case '8': case '9': + n = 0; + while (*fmt != '\0' && is_digit(*fmt)) { + n *= 10; + n += to_digit(*fmt); + fmt++; + } + if (*fmt == '$') { + if (nextarg > maxarg) + maxarg = nextarg; + nextarg = n; + fmt++; + } else + pi->width = n; + continue; + case 'D': + case 'O': + case 'U': + pi->spec += ('a' - 'A'); + pi->is_intmax = 0; + if (pi->is_long_double || pi->is_quad) { + pi->is_long = 0; + pi->is_long_double = 1; + } else { + pi->is_long = 1; + pi->is_long_double = 0; + } + fmt++; + break; + case 'j': + pi->is_intmax = 1; + fmt++; + continue; + case 'q': + pi->is_long = 0; + pi->is_quad = 1; + fmt++; + continue; + case 'L': + pi->is_long_double = 1; + fmt++; + continue; + case 'h': + fmt++; + if (*fmt == 'h') { + fmt++; + pi->is_char = 1; + } else { + pi->is_short = 1; + } + continue; + case 'l': + fmt++; + if (*fmt == 'l') { + fmt++; + pi->is_long_double = 1; + pi->is_quad = 0; + } else { + pi->is_quad = 0; + pi->is_long = 1; + } + continue; + case 't': + pi->is_ptrdiff = 1; + fmt++; + continue; + case 'z': + pi->is_size = 1; + fmt++; + continue; + default: + fmt++; + break; + } + if (printf_tbl[pi->spec].arginfo == NULL) + errx(1, "arginfo[%c] = NULL", pi->spec); + ch = printf_tbl[pi->spec].arginfo( + pi, __PRINTFMAXARG, &argt[nextarg]); + if (ch > 0) + pi->arg[0] = &args[nextarg]; + if (ch > 1) + pi->arg[1] = &args[nextarg + 1]; + nextarg += ch; + break; + } + } + if (nextarg > maxarg) + maxarg = nextarg; +#if 0 + fprintf(stderr, "fmt0 <%s>\n", fmt0); + fprintf(stderr, "pil %p\n", pil); +#endif + for (ch = 1; ch < maxarg; ch++) { +#if 0 + fprintf(stderr, "arg %d %x\n", ch, argt[ch]); +#endif + switch(argt[ch]) { + case PA_CHAR: + args[ch].intarg = (char)va_arg (ap, int); + break; + case PA_INT: + args[ch].intarg = va_arg (ap, int); + break; + case PA_INT | PA_FLAG_SHORT: + args[ch].intarg = (short)va_arg (ap, int); + break; + case PA_INT | PA_FLAG_LONG: + args[ch].longarg = va_arg (ap, long); + break; + case PA_INT | PA_FLAG_INTMAX: + args[ch].intmaxarg = va_arg (ap, intmax_t); + break; + case PA_INT | PA_FLAG_QUAD: + args[ch].intmaxarg = va_arg (ap, quad_t); + break; + case PA_INT | PA_FLAG_LONG_LONG: + args[ch].intmaxarg = va_arg (ap, long long); + break; + case PA_INT | PA_FLAG_SIZE: + args[ch].intmaxarg = va_arg (ap, size_t); + break; + case PA_INT | PA_FLAG_PTRDIFF: + args[ch].intmaxarg = va_arg (ap, ptrdiff_t); + break; + case PA_WCHAR: + args[ch].wintarg = va_arg (ap, wint_t); + break; + case PA_POINTER: + args[ch].pvoidarg = va_arg (ap, void *); + break; + case PA_STRING: + args[ch].pchararg = va_arg (ap, char *); + break; + case PA_WSTRING: + args[ch].pwchararg = va_arg (ap, wchar_t *); + break; + case PA_DOUBLE: +#ifndef NO_FLOATING_POINT + args[ch].doublearg = va_arg (ap, double); +#endif + break; + case PA_DOUBLE | PA_FLAG_LONG_DOUBLE: +#ifndef NO_FLOATING_POINT + args[ch].longdoublearg = va_arg (ap, long double); +#endif + break; + default: + errx(1, "argtype = %x (fmt = \"%s\")\n", + argt[ch], fmt0); + } + } + for (pi = pia; pi < pil; pi++) { +#if 0 + fprintf(stderr, "pi %p", pi); + fprintf(stderr, " spec '%c'", pi->spec); + fprintf(stderr, " args %d", + ((uintptr_t)pi->arg[0] - (uintptr_t)args) / sizeof args[0]); + if (pi->width) fprintf(stderr, " width %d", pi->width); + if (pi->pad) fprintf(stderr, " pad 0x%x", pi->pad); + if (pi->left) fprintf(stderr, " left"); + if (pi->showsign) fprintf(stderr, " showsign"); + if (pi->prec != -1) fprintf(stderr, " prec %d", pi->prec); + if (pi->is_char) fprintf(stderr, " char"); + if (pi->is_short) fprintf(stderr, " short"); + if (pi->is_long) fprintf(stderr, " long"); + if (pi->is_long_double) fprintf(stderr, " long_double"); + fprintf(stderr, "\n"); + fprintf(stderr, "\t\"%.*s\"\n", pi->end - pi->begin, pi->begin); +#endif + if (pi->get_width) { + pi->width = args[pi->get_width].intarg; + /*- + * ``A negative field width argument is taken as a + * - flag followed by a positive field width.'' + * -- ANSI X3J11 + * They don't exclude field widths read from args. + */ + if (pi->width < 0) { + pi->left = 1; + pi->width = -pi->width; + } + } + if (pi->get_prec) + pi->prec = args[pi->get_prec].intarg; + ret += __printf_puts(&io, pi->begin, pi->end - pi->begin); + if (printf_tbl[pi->spec].gnurender != NULL) { + __printf_flush(&io); + pi->sofar = ret; + ret += printf_tbl[pi->spec].gnurender( + fp, pi, (const void *)pi->arg); + } else if (printf_tbl[pi->spec].render != NULL) { + pi->sofar = ret; + n = printf_tbl[pi->spec].render( + &io, pi, (const void *)pi->arg); + if (n < 0) + io.fp->_flags |= __SERR; + else + ret += n; + } else if (pi->begin == pi->end) + errx(1, "render[%c] = NULL", *fmt); + } + __printf_flush(&io); + return (ret); +} + +extern int __fflush(FILE *fp); + +/* + * Helper function for `fprintf to unbuffered unix file': creates a + * temporary buffer. We only work on write-only files; this avoids + * worries about ungetc buffers and so forth. + */ +static int +__v3printf(FILE *fp, const char *fmt, int pct, va_list ap) +{ + int ret; + FILE fake; + unsigned char buf[BUFSIZ]; + + /* copy the important variables */ + fake._flags = fp->_flags & ~__SNBF; + fake._file = fp->_file; + fake._cookie = fp->_cookie; + fake._write = fp->_write; + fake._extra = fp->_extra; + + /* set up the buffer */ + fake._bf._base = fake._p = buf; + fake._bf._size = fake._w = sizeof(buf); + fake._lbfsize = 0; /* not actually used, but Just In Case */ + + /* do the work, then copy any error status */ + ret = __v2printf(&fake, fmt, pct, ap); + if (ret >= 0 && __fflush(&fake)) + ret = EOF; + if (fake._flags & __SERR) + fp->_flags |= __SERR; + return (ret); +} + +int +__xvprintf(FILE *fp, const char *fmt0, va_list ap) +{ + unsigned u; + const char *p; + + /* Count number of '%' signs handling double '%' signs */ + for (p = fmt0, u = 0; *p; p++) { + if (*p != '%') + continue; + u++; + if (p[1] == '%') + p++; + } + + /* optimise fprintf(stderr) (and other unbuffered Unix files) */ + if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && + fp->_file >= 0) + return (__v3printf(fp, fmt0, u, ap)); + else + return (__v2printf(fp, fmt0, u, ap)); +} + +/* extending ---------------------------------------------------------*/ + +int +register_printf_function(int spec, printf_function *render, printf_arginfo_function *arginfo) +{ + + if (spec > 255 || spec < 0) + return (-1); + printf_tbl[spec].gnurender = render; + printf_tbl[spec].arginfo = arginfo; + __use_xprintf = 1; + return (0); +} + +int +register_printf_render(int spec, printf_render *render, printf_arginfo_function *arginfo) +{ + + if (spec > 255 || spec < 0) + return (-1); + printf_tbl[spec].render = render; + printf_tbl[spec].arginfo = arginfo; + __use_xprintf = 1; + return (0); +} + +int +register_printf_render_std(const unsigned char *specs) +{ + + for (; *specs != '\0'; specs++) { + switch (*specs) { + case 'H': + register_printf_render(*specs, + __printf_render_hexdump, + __printf_arginfo_hexdump); + break; + case 'M': + register_printf_render(*specs, + __printf_render_errno, + __printf_arginfo_errno); + break; + case 'Q': + register_printf_render(*specs, + __printf_render_quote, + __printf_arginfo_quote); + break; + case 'T': + register_printf_render(*specs, + __printf_render_time, + __printf_arginfo_time); + break; + case 'V': + register_printf_render(*specs, + __printf_render_vis, + __printf_arginfo_vis); + break; + default: + return (-1); + } + } + return (0); +} + diff --git a/lib/libc/stdio/xprintf_errno.c b/lib/libc/stdio/xprintf_errno.c new file mode 100644 index 0000000..0c2be46 --- /dev/null +++ b/lib/libc/stdio/xprintf_errno.c @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <wchar.h> +#include <vis.h> +#include <assert.h> +#include <sys/time.h> +#include "printf.h" + +int +__printf_arginfo_errno(const struct printf_info *pi __unused, size_t n, int *argt) +{ + + assert(n >= 1); + argt[0] = PA_INT; + return (1); +} + +int +__printf_render_errno(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg) +{ + int ret, error; + char buf[64]; + const char *p; + + ret = 0; + error = *((const int *)arg[0]); + if (error >= 0 && error < sys_nerr) { + p = strerror(error); + return (__printf_out(io, pi, p, strlen(p))); + } + sprintf(buf, "errno=%d/0x%x", error, error); + ret += __printf_out(io, pi, buf, strlen(buf)); + __printf_flush(io); + return(ret); +} diff --git a/lib/libc/stdio/xprintf_float.c b/lib/libc/stdio/xprintf_float.c new file mode 100644 index 0000000..b719aac --- /dev/null +++ b/lib/libc/stdio/xprintf_float.c @@ -0,0 +1,425 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <wchar.h> +#include <assert.h> +#include <locale.h> +#include <limits.h> + +#define dtoa __dtoa +#define freedtoa __freedtoa + +#include <float.h> +#include <math.h> +#include "gdtoa.h" +#include "floatio.h" +#include "printf.h" +#include <un-namespace.h> + +/* + * The size of the buffer we use as scratch space for integer + * conversions, among other things. Technically, we would need the + * most space for base 10 conversions with thousands' grouping + * characters between each pair of digits. 100 bytes is a + * conservative overestimate even for a 128-bit uintmax_t. + */ +#define BUF 100 + +#define DEFPREC 6 /* Default FP precision */ + + +/* various globals ---------------------------------------------------*/ + + +/* padding function---------------------------------------------------*/ + +#define PRINTANDPAD(p, ep, len, with) do { \ + n2 = (ep) - (p); \ + if (n2 > (len)) \ + n2 = (len); \ + if (n2 > 0) \ + ret += __printf_puts(io, (p), n2); \ + ret += __printf_pad(io, (len) - (n2 > 0 ? n2 : 0), (with)); \ +} while(0) + +/* misc --------------------------------------------------------------*/ + +#define to_char(n) ((n) + '0') + +static int +exponent(char *p0, int expo, int fmtch) +{ + char *p, *t; + char expbuf[MAXEXPDIG]; + + p = p0; + *p++ = fmtch; + if (expo < 0) { + expo = -expo; + *p++ = '-'; + } + else + *p++ = '+'; + t = expbuf + MAXEXPDIG; + if (expo > 9) { + do { + *--t = to_char(expo % 10); + } while ((expo /= 10) > 9); + *--t = to_char(expo); + for (; t < expbuf + MAXEXPDIG; *p++ = *t++) + ; + } + else { + /* + * Exponents for decimal floating point conversions + * (%[eEgG]) must be at least two characters long, + * whereas exponents for hexadecimal conversions can + * be only one character long. + */ + if (fmtch == 'e' || fmtch == 'E') + *p++ = '0'; + *p++ = to_char(expo); + } + return (p - p0); +} + +/* 'f' ---------------------------------------------------------------*/ + +int +__printf_arginfo_float(const struct printf_info *pi, size_t n, int *argt) +{ + assert (n > 0); + argt[0] = PA_DOUBLE; + if (pi->is_long_double) + argt[0] |= PA_FLAG_LONG_DOUBLE; + return (1); +} + +/* + * We can decompose the printed representation of floating + * point numbers into several parts, some of which may be empty: + * + * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ + * A B ---C--- D E F + * + * A: 'sign' holds this value if present; '\0' otherwise + * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal + * C: cp points to the string MMMNNN. Leading and trailing + * zeros are not in the string and must be added. + * D: expchar holds this character; '\0' if no exponent, e.g. %f + * F: at least two digits for decimal, at least one digit for hex + */ + +int +__printf_render_float(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + int prec; /* precision from format; <0 for N/A */ + char *dtoaresult; /* buffer allocated by dtoa */ + char expchar; /* exponent character: [eEpP\0] */ + char *cp; + int expt; /* integer value of exponent */ + int signflag; /* true if float is negative */ + char *dtoaend; /* pointer to end of converted digits */ + char sign; /* sign prefix (' ', '+', '-', or \0) */ + int size; /* size of converted field or string */ + int ndig; /* actual number of digits returned by dtoa */ + int expsize; /* character count for expstr */ + char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ + int nseps; /* number of group separators with ' */ + int nrepeats; /* number of repeats of the last group */ + const char *grouping; /* locale specific numeric grouping rules */ + int lead; /* sig figs before decimal or group sep */ + long double ld; + double d; + int realsz; /* field size expanded by dprec, sign, etc */ + int dprec; /* a copy of prec if [diouxX], 0 otherwise */ + char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */ + int prsize; /* max size of printed field */ + int ret; /* return value accumulator */ + char *decimal_point; /* locale specific decimal point */ + int n2; /* XXX: for PRINTANDPAD */ + char thousands_sep; /* locale specific thousands separator */ + char buf[BUF]; /* buffer with space for digits of uintmax_t */ + const char *xdigs; + int flag; + + prec = pi->prec; + ox[1] = '\0'; + sign = pi->showsign; + flag = 0; + ret = 0; + + thousands_sep = *(localeconv()->thousands_sep); + grouping = NULL; + if (pi->alt) + grouping = localeconv()->grouping; + decimal_point = localeconv()->decimal_point; + dprec = -1; + + switch(pi->spec) { + case 'a': + case 'A': + if (pi->spec == 'a') { + ox[1] = 'x'; + xdigs = __lowercase_hex; + expchar = 'p'; + } else { + ox[1] = 'X'; + xdigs = __uppercase_hex; + expchar = 'P'; + } + if (prec >= 0) + prec++; + if (pi->is_long_double) { + ld = *((long double *)arg[0]); + dtoaresult = cp = + __hldtoa(ld, xdigs, prec, + &expt, &signflag, &dtoaend); + } else { + d = *((double *)arg[0]); + dtoaresult = cp = + __hdtoa(d, xdigs, prec, + &expt, &signflag, &dtoaend); + } + if (prec < 0) + prec = dtoaend - cp; + if (expt == INT_MAX) + ox[1] = '\0'; + goto fp_common; + case 'e': + case 'E': + expchar = pi->spec; + if (prec < 0) /* account for digit before decpt */ + prec = DEFPREC + 1; + else + prec++; + break; + case 'f': + case 'F': + expchar = '\0'; + break; + case 'g': + case 'G': + expchar = pi->spec - ('g' - 'e'); + if (prec == 0) + prec = 1; + break; + default: + assert(pi->spec == 'f'); + } + + if (prec < 0) + prec = DEFPREC; + if (pi->is_long_double) { + ld = *((long double *)arg[0]); + dtoaresult = cp = + __ldtoa(&ld, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + } else { + d = *((double *)arg[0]); + dtoaresult = cp = + dtoa(d, expchar ? 2 : 3, prec, + &expt, &signflag, &dtoaend); + if (expt == 9999) + expt = INT_MAX; + } +fp_common: + if (signflag) + sign = '-'; + if (expt == INT_MAX) { /* inf or nan */ + if (*cp == 'N') { + cp = (pi->spec >= 'a') ? "nan" : "NAN"; + sign = '\0'; + } else + cp = (pi->spec >= 'a') ? "inf" : "INF"; + size = 3; + flag = 1; + goto here; + } + ndig = dtoaend - cp; + if (pi->spec == 'g' || pi->spec == 'G') { + if (expt > -4 && expt <= prec) { + /* Make %[gG] smell like %[fF] */ + expchar = '\0'; + if (pi->alt) + prec -= expt; + else + prec = ndig - expt; + if (prec < 0) + prec = 0; + } else { + /* + * Make %[gG] smell like %[eE], but + * trim trailing zeroes if no # flag. + */ + if (!pi->alt) + prec = ndig; + } + } + if (expchar) { + expsize = exponent(expstr, expt - 1, expchar); + size = expsize + prec; + if (prec > 1 || pi->alt) + ++size; + } else { + /* space for digits before decimal point */ + if (expt > 0) + size = expt; + else /* "0" */ + size = 1; + /* space for decimal pt and following digits */ + if (prec || pi->alt) + size += prec + 1; + if (grouping && expt > 0) { + /* space for thousands' grouping */ + nseps = nrepeats = 0; + lead = expt; + while (*grouping != CHAR_MAX) { + if (lead <= *grouping) + break; + lead -= *grouping; + if (*(grouping+1)) { + nseps++; + grouping++; + } else + nrepeats++; + } + size += nseps + nrepeats; + } else + lead = expt; + } + +here: + /* + * All reasonable formats wind up here. At this point, `cp' + * points to a string which (if not flags&LADJUST) should be + * padded out to `width' places. If flags&ZEROPAD, it should + * first be prefixed by any sign or other prefix; otherwise, + * it should be blank padded before the prefix is emitted. + * After any left-hand padding and prefixing, emit zeroes + * required by a decimal [diouxX] precision, then print the + * string proper, then emit zeroes required by any leftover + * floating precision; finally, if LADJUST, pad with blanks. + * + * Compute actual size, so we know how much to pad. + * size excludes decimal prec; realsz includes it. + */ + realsz = dprec > size ? dprec : size; + if (sign) + realsz++; + if (ox[1]) + realsz += 2; + + prsize = pi->width > realsz ? pi->width : realsz; + + /* right-adjusting blank padding */ + if (pi->pad != '0' && pi->left == 0) + ret += __printf_pad(io, pi->width - realsz, 0); + + /* prefix */ + if (sign) + ret += __printf_puts(io, &sign, 1); + + if (ox[1]) { /* ox[1] is either x, X, or \0 */ + ox[0] = '0'; + ret += __printf_puts(io, ox, 2); + } + + /* right-adjusting zero padding */ + if (pi->pad == '0' && pi->left == 0) + ret += __printf_pad(io, pi->width - realsz, 1); + + /* leading zeroes from decimal precision */ + ret += __printf_pad(io, dprec - size, 1); + + if (flag) + ret += __printf_puts(io, cp, size); + else { + /* glue together f_p fragments */ + if (!expchar) { /* %[fF] or sufficiently short %[gG] */ + if (expt <= 0) { + ret += __printf_puts(io, "0", 1); + if (prec || pi->alt) + ret += __printf_puts(io, decimal_point, 1); + ret += __printf_pad(io, -expt, 1); + /* already handled initial 0's */ + prec += expt; + } else { + PRINTANDPAD(cp, dtoaend, lead, 1); + cp += lead; + if (grouping) { + while (nseps>0 || nrepeats>0) { + if (nrepeats > 0) + nrepeats--; + else { + grouping--; + nseps--; + } + ret += __printf_puts(io, &thousands_sep, 1); + PRINTANDPAD(cp,dtoaend, + *grouping, 1); + cp += *grouping; + } + if (cp > dtoaend) + cp = dtoaend; + } + if (prec || pi->alt) + ret += __printf_puts(io, decimal_point,1); + } + PRINTANDPAD(cp, dtoaend, prec, 1); + } else { /* %[eE] or sufficiently long %[gG] */ + if (prec > 1 || pi->alt) { + buf[0] = *cp++; + buf[1] = *decimal_point; + ret += __printf_puts(io, buf, 2); + ret += __printf_puts(io, cp, ndig-1); + ret += __printf_pad(io, prec - ndig, 1); + } else /* XeYYY */ + ret += __printf_puts(io, cp, 1); + ret += __printf_puts(io, expstr, expsize); + } + } + /* left-adjusting padding (always blank) */ + if (pi->left) + ret += __printf_pad(io, pi->width - realsz, 0); + + __printf_flush(io); + if (dtoaresult != NULL) + freedtoa(dtoaresult); + + return (ret); +} diff --git a/lib/libc/stdio/xprintf_hexdump.c b/lib/libc/stdio/xprintf_hexdump.c new file mode 100644 index 0000000..a2956ba --- /dev/null +++ b/lib/libc/stdio/xprintf_hexdump.c @@ -0,0 +1,97 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <wchar.h> +#include <stdint.h> +#include <assert.h> +#include <sys/time.h> +#include "printf.h" + +int +__printf_arginfo_hexdump(const struct printf_info *pi, size_t n, int *argt) +{ + + assert(n >= 2); + argt[0] = PA_POINTER; + argt[1] = PA_INT; + return (2); +} + +int +__printf_render_hexdump(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + unsigned char *p; + unsigned u, l, j, a; + char buf[100], *q; + int ret; + + if (pi->width > 0 && pi->width < 16) + l = pi->width; + else + l = 16; + p = *((unsigned char **)arg[0]); + u = *((unsigned *)arg[1]); + + ret = 0; + a = 0; + while (u > 0) { + q = buf; + if (pi->showsign) + q += sprintf(q, " %04x", a); + for (j = 0; j < l && j < u; j++) + q += sprintf(q, " %02x", p[j]); + if (pi->alt) { + for (; j < l; j++) + q += sprintf(q, " "); + q += sprintf(q, " |"); + for (j = 0; j < l && j < u; j++) { + if (p[j] < ' ' || p[j] > '~') + *q++ = '.'; + else + *q++ = p[j]; + } + for (; j < l; j++) + *q++ = ' '; + *q++ = '|'; + } + if (l < u) + j = l; + else + j = u; + p += j; + u -= j; + a += j; + if (u > 0) + *q++ = '\n'; + ret += __printf_puts(io, buf + 1, q - (buf + 1)); + __printf_flush(io); + } + return (ret); +} diff --git a/lib/libc/stdio/xprintf_int.c b/lib/libc/stdio/xprintf_int.c new file mode 100644 index 0000000..f006b54 --- /dev/null +++ b/lib/libc/stdio/xprintf_int.c @@ -0,0 +1,471 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <err.h> +#include <sys/types.h> +#include <stddef.h> +#include <stdlib.h> +#include <stdio.h> +#include <limits.h> +#include <locale.h> +#include <stdint.h> +#include <assert.h> +#include <namespace.h> +#include <string.h> +#include <wchar.h> +#include <un-namespace.h> + +#include "printf.h" + +/* private stuff -----------------------------------------------------*/ + +union arg { + int intarg; + u_int uintarg; + long longarg; + u_long ulongarg; + intmax_t intmaxarg; + uintmax_t uintmaxarg; +}; + +/* + * Macros for converting digits to letters and vice versa + */ +#define to_char(n) ((n) + '0') + +/* various globals ---------------------------------------------------*/ + +/* + * The size of the buffer we use for integer conversions. + * Technically, we would need the most space for base 10 + * conversions with thousands' grouping characters between + * each pair of digits: 60 digits for 128 bit intmax_t. + * Use a bit more for better alignment of stuff. + */ +#define BUF 64 + +/* misc --------------------------------------------------------------*/ + +/* + * Convert an unsigned long to ASCII for printf purposes, returning + * a pointer to the first character of the string representation. + * Octal numbers can be forced to have a leading zero; hex numbers + * use the given digits. + */ +static char * +__ultoa(u_long val, char *endp, int base, const char *xdigs, + int needgrp, char thousep, const char *grp) +{ + char *cp = endp; + long sval; + int ndig; + + /* + * Handle the three cases separately, in the hope of getting + * better/faster code. + */ + switch (base) { + case 10: + if (val < 10) { /* many numbers are 1 digit */ + *--cp = to_char(val); + return (cp); + } + ndig = 0; + /* + * On many machines, unsigned arithmetic is harder than + * signed arithmetic, so we do at most one unsigned mod and + * divide; this is sufficient to reduce the range of + * the incoming value to where signed arithmetic works. + */ + if (val > LONG_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && ndig == *grp && *grp != CHAR_MAX + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: /* oops */ + assert(base == 16); + } + return (cp); +} + + +/* Identical to __ultoa, but for intmax_t. */ +static char * +__ujtoa(uintmax_t val, char *endp, int base, const char *xdigs, + int needgrp, char thousep, const char *grp) +{ + char *cp = endp; + intmax_t sval; + int ndig; + + switch (base) { + case 10: + if (val < 10) { + *--cp = to_char(val % 10); + return (cp); + } + ndig = 0; + if (val > INTMAX_MAX) { + *--cp = to_char(val % 10); + ndig++; + sval = val / 10; + } else + sval = val; + do { + *--cp = to_char(sval % 10); + ndig++; + /* + * If (*grp == CHAR_MAX) then no more grouping + * should be performed. + */ + if (needgrp && *grp != CHAR_MAX && ndig == *grp + && sval > 9) { + *--cp = thousep; + ndig = 0; + /* + * If (*(grp+1) == '\0') then we have to + * use *grp character (last grouping rule) + * for all next cases + */ + if (*(grp+1) != '\0') + grp++; + } + sval /= 10; + } while (sval != 0); + break; + + case 8: + do { + *--cp = to_char(val & 7); + val >>= 3; + } while (val); + break; + + case 16: + do { + *--cp = xdigs[val & 15]; + val >>= 4; + } while (val); + break; + + default: + abort(); + } + return (cp); +} + + +/* 'd' ---------------------------------------------------------------*/ + +int +__printf_arginfo_int(const struct printf_info *pi, size_t n, int *argt) +{ + assert (n > 0); + argt[0] = PA_INT; + if (pi->is_ptrdiff) + argt[0] |= PA_FLAG_PTRDIFF; + else if (pi->is_size) + argt[0] |= PA_FLAG_SIZE; + else if (pi->is_long) + argt[0] |= PA_FLAG_LONG; + else if (pi->is_intmax) + argt[0] |= PA_FLAG_INTMAX; + else if (pi->is_quad) + argt[0] |= PA_FLAG_QUAD; + else if (pi->is_long_double) + argt[0] |= PA_FLAG_LONG_LONG; + else if (pi->is_short) + argt[0] |= PA_FLAG_SHORT; + else if (pi->is_char) + argt[0] = PA_CHAR; + return (1); +} + +int +__printf_render_int(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + const union arg *argp; + char buf[BUF]; + char *p, *pe; + char ns, l; + int rdx, sign, zext, ngrp; + const char *nalt, *digit; + char thousands_sep; /* locale specific thousands separator */ + const char *grouping; /* locale specific numeric grouping rules */ + uintmax_t uu; + int ret; + + ret = 0; + nalt = NULL; + digit = __lowercase_hex; + ns = '\0'; + pe = buf + sizeof buf - 1; + + if (pi->group) { + thousands_sep = *(localeconv()->thousands_sep); + grouping = localeconv()->grouping; + ngrp = 1; + } else { + thousands_sep = 0; + grouping = NULL; + ngrp = 0; + } + + switch(pi->spec) { + case 'd': + case 'i': + rdx = 10; + sign = 1; + break; + case 'X': + digit = __uppercase_hex; + /*FALLTHOUGH*/ + case 'x': + rdx = 16; + sign = 0; + break; + case 'u': + case 'U': + rdx = 10; + sign = 0; + break; + case 'o': + case 'O': + rdx = 8; + sign = 0; + break; + default: + fprintf(stderr, "pi->spec = '%c'\n", pi->spec); + assert(1 == 0); + } + argp = arg[0]; + + if (sign) + ns = pi->showsign; + + if (pi->is_long_double || pi->is_quad || pi->is_intmax || + pi->is_size || pi->is_ptrdiff) { + if (sign && argp->intmaxarg < 0) { + uu = -argp->intmaxarg; + ns = '-'; + } else + uu = argp->uintmaxarg; + } else if (pi->is_long) { + if (sign && argp->longarg < 0) { + uu = (u_long)-argp->longarg; + ns = '-'; + } else + uu = argp->ulongarg; + } else if (pi->is_short) { + if (sign && (short)argp->intarg < 0) { + uu = -(short)argp->intarg; + ns = '-'; + } else + uu = (unsigned short)argp->uintarg; + } else if (pi->is_char) { + if (sign && (signed char)argp->intarg < 0) { + uu = -(signed char)argp->intarg; + ns = '-'; + } else + uu = (unsigned char)argp->uintarg; + } else { + if (sign && argp->intarg < 0) { + uu = (unsigned)-argp->intarg; + ns = '-'; + } else + uu = argp->uintarg; + } + if (uu <= ULONG_MAX) + p = __ultoa(uu, pe, rdx, digit, ngrp, thousands_sep, grouping); + else + p = __ujtoa(uu, pe, rdx, digit, ngrp, thousands_sep, grouping); + + l = 0; + if (uu == 0) { + /*- + * ``The result of converting a zero value with an + * explicit precision of zero is no characters.'' + * -- ANSI X3J11 + * + * ``The C Standard is clear enough as is. The call + * printf("%#.0o", 0) should print 0.'' + * -- Defect Report #151 + */ + ; + if (pi->prec == 0 && !(pi->alt && rdx == 8)) + p = pe; + } else if (pi->alt) { + if (rdx == 8) + *--p = '0'; + if (rdx == 16) { + if (pi->spec == 'x') + nalt = "0x"; + else + nalt = "0X"; + l += 2; + } + } + l += pe - p; + if (ns) + l++; + + /*- + * ``... diouXx conversions ... if a precision is + * specified, the 0 flag will be ignored.'' + * -- ANSI X3J11 + */ + if (pi->prec > (pe - p)) + zext = pi->prec - (pe - p); + else if (pi->prec != -1) + zext = 0; + else if (pi->pad == '0' && pi->width > l && !pi->left) + zext = pi->width - l; + else + zext = 0; + + l += zext; + + while (zext > 0 && p > buf) { + *--p = '0'; + zext--; + } + + if (l < BUF) { + if (ns) { + *--p = ns; + } else if (nalt != NULL) { + *--p = nalt[1]; + *--p = nalt[0]; + } + if (pi->width > (pe - p) && !pi->left) { + l = pi->width - (pe - p); + while (l > 0 && p > buf) { + *--p = ' '; + l--; + } + if (l) + ret += __printf_pad(io, l, 0); + } + } else { + if (!pi->left && pi->width > l) + ret += __printf_pad(io, pi->width - l, 0); + if (ns != '\0') + ret += __printf_puts(io, &ns, 1); + else if (nalt != NULL) + ret += __printf_puts(io, nalt, 2); + if (zext > 0) + ret += __printf_pad(io, zext, 1); + } + + ret += __printf_puts(io, p, pe - p); + if (pi->width > ret && pi->left) + ret += __printf_pad(io, pi->width - ret, 0); + __printf_flush(io); + return (ret); +} + +/* 'p' ---------------------------------------------------------------*/ + +int +__printf_arginfo_ptr(const struct printf_info *pi __unused, size_t n, int *argt) +{ + + assert (n > 0); + argt[0] = PA_POINTER; + return (1); +} + +int +__printf_render_ptr(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + struct printf_info p2; + uintmax_t u; + const void *p; + + /*- + * ``The argument shall be a pointer to void. The + * value of the pointer is converted to a sequence + * of printable characters, in an implementation- + * defined manner.'' + * -- ANSI X3J11 + */ + u = (uintmax_t)(uintptr_t) *((void **)arg[0]); + p2 = *pi; + + p2.spec = 'x'; + p2.alt = 1; + p2.is_long_double = 1; + p = &u; + return (__printf_render_int(io, &p2, &p)); +} diff --git a/lib/libc/stdio/xprintf_quote.c b/lib/libc/stdio/xprintf_quote.c new file mode 100644 index 0000000..0edcd30 --- /dev/null +++ b/lib/libc/stdio/xprintf_quote.c @@ -0,0 +1,98 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <ctype.h> +#include <wchar.h> +#include <vis.h> +#include <assert.h> +#include <sys/time.h> +#include "printf.h" + +int +__printf_arginfo_quote(const struct printf_info *pi __unused, size_t n, int *argt) +{ + + assert(n >= 1); + argt[0] = PA_POINTER; + return (1); +} + +int +__printf_render_quote(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg) +{ + const char *str, *p, *t, *o; + char r[5]; + int i, ret; + + str = *((const char *const *)arg[0]); + if (str == NULL) + return (__printf_out(io, pi, "\"(null)\"", 8)); + if (*str == '\0') + return (__printf_out(io, pi, "\"\"", 2)); + + for (i = 0, p = str; *p; p++) + if (isspace(*p) || *p == '\\' || *p == '"') + i++; + if (!i) + return (__printf_out(io, pi, str, strlen(str))); + + ret = __printf_out(io, pi, "\"", 1); + for (t = p = str; *p; p++) { + o = NULL; + if (*p == '\\') + o = "\\\\"; + else if (*p == '\n') + o = "\\n"; + else if (*p == '\r') + o = "\\r"; + else if (*p == '\t') + o = "\\t"; + else if (*p == ' ') + o = " "; + else if (*p == '"') + o = "\\\""; + else if (isspace(*p)) { + sprintf(r, "\\%03o", *p); + o = r; + } else + continue; + if (p != t) + ret += __printf_out(io, pi, t, p - t); + ret += __printf_out(io, pi, o, strlen(o)); + t = p + 1; + } + if (p != t) + ret += __printf_out(io, pi, t, p - t); + ret += __printf_out(io, pi, "\"", 1); + __printf_flush(io); + return(ret); +} diff --git a/lib/libc/stdio/xprintf_str.c b/lib/libc/stdio/xprintf_str.c new file mode 100644 index 0000000..d46fa85 --- /dev/null +++ b/lib/libc/stdio/xprintf_str.c @@ -0,0 +1,187 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> +#include <stdint.h> +#include <assert.h> +#include <wchar.h> +#include "printf.h" + +/* + * Convert a wide character string argument for the %ls format to a multibyte + * string representation. If not -1, prec specifies the maximum number of + * bytes to output, and also means that we can't assume that the wide char. + * string ends is null-terminated. + */ +static char * +__wcsconv(wchar_t *wcsarg, int prec) +{ + static const mbstate_t initial; + mbstate_t mbs; + char buf[MB_LEN_MAX]; + wchar_t *p; + char *convbuf; + size_t clen, nbytes; + + /* Allocate space for the maximum number of bytes we could output. */ + if (prec < 0) { + p = wcsarg; + mbs = initial; + nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs); + if (nbytes == (size_t)-1) + return (NULL); + } else { + /* + * Optimisation: if the output precision is small enough, + * just allocate enough memory for the maximum instead of + * scanning the string. + */ + if (prec < 128) + nbytes = prec; + else { + nbytes = 0; + p = wcsarg; + mbs = initial; + for (;;) { + clen = wcrtomb(buf, *p++, &mbs); + if (clen == 0 || clen == (size_t)-1 || + (int)(nbytes + clen) > prec) + break; + nbytes += clen; + } + } + } + if ((convbuf = malloc(nbytes + 1)) == NULL) + return (NULL); + + /* Fill the output buffer. */ + p = wcsarg; + mbs = initial; + if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p, + nbytes, &mbs)) == (size_t)-1) { + free(convbuf); + return (NULL); + } + convbuf[nbytes] = '\0'; + return (convbuf); +} + + +/* 's' ---------------------------------------------------------------*/ + +int +__printf_arginfo_str(const struct printf_info *pi, size_t n, int *argt) +{ + + assert (n > 0); + if (pi->is_long || pi->spec == 'C') + argt[0] = PA_WSTRING; + else + argt[0] = PA_STRING; + return (1); +} + +int +__printf_render_str(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + const char *p; + wchar_t *wcp; + char *convbuf; + int l; + + if (pi->is_long || pi->spec == 'S') { + wcp = *((wint_t **)arg[0]); + if (wcp == NULL) + return (__printf_out(io, pi, "(null)", 6)); + convbuf = __wcsconv(wcp, pi->prec); + if (convbuf == NULL) + return (-1); + l = __printf_out(io, pi, convbuf, strlen(convbuf)); + free(convbuf); + return (l); + } + p = *((char **)arg[0]); + if (p == NULL) + return (__printf_out(io, pi, "(null)", 6)); + l = strlen(p); + if (pi->prec >= 0 && pi->prec < l) + l = pi->prec; + return (__printf_out(io, pi, p, l)); +} + +/* 'c' ---------------------------------------------------------------*/ + +int +__printf_arginfo_chr(const struct printf_info *pi, size_t n, int *argt) +{ + + assert (n > 0); + if (pi->is_long || pi->spec == 'C') + argt[0] = PA_WCHAR; + else + argt[0] = PA_INT; + return (1); +} + +int +__printf_render_chr(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + int i; + wint_t ii; + unsigned char c; + static const mbstate_t initial; /* XXX: this is bogus! */ + mbstate_t mbs; + size_t mbseqlen; + char buf[MB_CUR_MAX]; + + if (pi->is_long || pi->spec == 'C') { + ii = *((wint_t *)arg[0]); + + mbs = initial; + mbseqlen = wcrtomb(buf, (wchar_t)ii, &mbs); + if (mbseqlen == (size_t) -1) + return (-1); + return (__printf_out(io, pi, buf, mbseqlen)); + } + i = *((int *)arg[0]); + c = i; + i = __printf_out(io, pi, &c, 1); + __printf_flush(io); + return (i); +} diff --git a/lib/libc/stdio/xprintf_time.c b/lib/libc/stdio/xprintf_time.c new file mode 100644 index 0000000..81697f1 --- /dev/null +++ b/lib/libc/stdio/xprintf_time.c @@ -0,0 +1,115 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ +#include <namespace.h> +#include <stdio.h> +#include <wchar.h> +#include <stdint.h> +#include <assert.h> +#include <sys/time.h> +#include "printf.h" + +int +__printf_arginfo_time(const struct printf_info *pi, size_t n, int *argt) +{ + + assert(n >= 1); + argt[0] = PA_POINTER; + return (1); +} +#define MINUTE 60 +#define HOUR (60 * MINUTE) +#define DAY (24 * HOUR) +#define YEAR (365 * DAY) + +int +__printf_render_time(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + char buf[100]; + char *p; + struct timeval *tv; + struct timespec *ts; + time_t *tp; + intmax_t t, tx; + int i, prec, nsec; + + prec = 0; + if (pi->is_long) { + tv = *((struct timeval **)arg[0]); + t = tv->tv_sec; + nsec = tv->tv_usec * 1000; + prec = 6; + } else if (pi->is_long_double) { + ts = *((struct timespec **)arg[0]); + t = ts->tv_sec; + nsec = ts->tv_nsec; + prec = 9; + } else { + tp = *((time_t **)arg[0]); + t = *tp; + } + + p = buf; + if (pi->alt) { + tx = t; + if (t >= YEAR) { + p += sprintf(p, "%jdy", t / YEAR); + t %= YEAR; + } + if (t >= DAY && t != 0) { + p += sprintf(p, "%jdd", t / DAY); + t %= DAY; + } + if (t >= HOUR && t != 0) { + p += sprintf(p, "%jdh", t / HOUR); + t %= HOUR; + } + if (t >= MINUTE && t != 0) { + p += sprintf(p, "%jdm", t / MINUTE); + t %= MINUTE; + } + if (t != 0 || tx == 0) + p += sprintf(p, "%jds", t); + } else { + p += sprintf(p, "%jd", (intmax_t)t); + } + if (pi->is_long || pi->is_long_double) { + if (pi->prec >= 0) + prec = pi->prec; + for (i = prec; i < 9; i++) + nsec /= 10; + p += sprintf(p, ".%.*d", prec, nsec); + } + return(__printf_out(io, pi, buf, p - buf)); +} diff --git a/lib/libc/stdio/xprintf_vis.c b/lib/libc/stdio/xprintf_vis.c new file mode 100644 index 0000000..819f09f --- /dev/null +++ b/lib/libc/stdio/xprintf_vis.c @@ -0,0 +1,78 @@ +/*- + * Copyright (c) 2005 Poul-Henning Kamp + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <namespace.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <wchar.h> +#include <vis.h> +#include <assert.h> +#include <sys/time.h> +#include "printf.h" + +int +__printf_arginfo_vis(const struct printf_info *pi, size_t n, int *argt) +{ + + assert(n >= 1); + argt[0] = PA_POINTER; + return (1); +} + +int +__printf_render_vis(struct __printf_io *io, const struct printf_info *pi, const void *const *arg) +{ + char *p, *buf; + unsigned l; + int ret; + + ret = 0; + p = *((char **)arg[0]); + if (p == NULL) + return (__printf_out(io, pi, "(null)", 6)); + if (pi->prec >= 0) + l = pi->prec; + else + l = strlen(p); + buf = malloc(l * 4 + 1); + if (buf == NULL) + return (-1); + if (pi->showsign) + ret = strvisx(buf, p, l, VIS_WHITE | VIS_HTTPSTYLE); + else if (pi->pad == '0') + ret = strvisx(buf, p, l, VIS_WHITE | VIS_OCTAL); + else if (pi->alt) + ret = strvisx(buf, p, l, VIS_WHITE); + else + ret = strvisx(buf, p, l, VIS_WHITE | VIS_CSTYLE | VIS_OCTAL); + ret += __printf_out(io, pi, buf, ret); + __printf_flush(io); + free(buf); + return(ret); +} |
