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Diffstat (limited to 'include/stdio.h')
| -rw-r--r-- | include/stdio.h | 523 |
1 files changed, 523 insertions, 0 deletions
diff --git a/include/stdio.h b/include/stdio.h new file mode 100644 index 0000000..512e60e --- /dev/null +++ b/include/stdio.h @@ -0,0 +1,523 @@ +/*- + * 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. + * + * @(#)stdio.h 8.5 (Berkeley) 4/29/95 + * $FreeBSD$ + */ + +#ifndef _STDIO_H_ +#define _STDIO_H_ + +#include <sys/cdefs.h> +#include <sys/_null.h> +#include <sys/_types.h> + +typedef __off_t fpos_t; + +#ifndef _SIZE_T_DECLARED +typedef __size_t size_t; +#define _SIZE_T_DECLARED +#endif + +#if __POSIX_VISIBLE >= 200809 +#ifndef _OFF_T_DECLARED +#define _OFF_T_DECLARED +typedef __off_t off_t; +#endif +#ifndef _SSIZE_T_DECLARED +#define _SSIZE_T_DECLARED +typedef __ssize_t ssize_t; +#endif +#endif + +#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE +#ifndef _VA_LIST_DECLARED +typedef __va_list va_list; +#define _VA_LIST_DECLARED +#endif +#endif + +#define _FSTDIO /* Define for new stdio with functions. */ + +/* + * NB: to fit things in six character monocase externals, the stdio + * code uses the prefix `__s' for stdio objects, typically followed + * by a three-character attempt at a mnemonic. + */ + +/* stdio buffers */ +struct __sbuf { + unsigned char *_base; + int _size; +}; + +/* + * stdio state variables. + * + * The following always hold: + * + * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), + * _lbfsize is -_bf._size, else _lbfsize is 0 + * if _flags&__SRD, _w is 0 + * if _flags&__SWR, _r is 0 + * + * This ensures that the getc and putc macros (or inline functions) never + * try to write or read from a file that is in `read' or `write' mode. + * (Moreover, they can, and do, automatically switch from read mode to + * write mode, and back, on "r+" and "w+" files.) + * + * _lbfsize is used only to make the inline line-buffered output stream + * code as compact as possible. + * + * _ub, _up, and _ur are used when ungetc() pushes back more characters + * than fit in the current _bf, or when ungetc() pushes back a character + * that does not match the previous one in _bf. When this happens, + * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff + * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. + * + * Certain members of __sFILE are accessed directly via macros or + * inline functions. To preserve ABI compat, these members must not + * be disturbed. These members are marked below with (*). + */ +struct __sFILE { + unsigned char *_p; /* (*) current position in (some) buffer */ + int _r; /* (*) read space left for getc() */ + int _w; /* (*) write space left for putc() */ + short _flags; /* (*) flags, below; this FILE is free if 0 */ + short _file; /* (*) fileno, if Unix descriptor, else -1 */ + struct __sbuf _bf; /* (*) the buffer (at least 1 byte, if !NULL) */ + int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ + + /* operations */ + void *_cookie; /* (*) cookie passed to io functions */ + int (*_close)(void *); + int (*_read)(void *, char *, int); + fpos_t (*_seek)(void *, fpos_t, int); + int (*_write)(void *, const char *, int); + + /* separate buffer for long sequences of ungetc() */ + struct __sbuf _ub; /* ungetc buffer */ + unsigned char *_up; /* saved _p when _p is doing ungetc data */ + int _ur; /* saved _r when _r is counting ungetc data */ + + /* tricks to meet minimum requirements even when malloc() fails */ + unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ + unsigned char _nbuf[1]; /* guarantee a getc() buffer */ + + /* separate buffer for fgetln() when line crosses buffer boundary */ + struct __sbuf _lb; /* buffer for fgetln() */ + + /* Unix stdio files get aligned to block boundaries on fseek() */ + int _blksize; /* stat.st_blksize (may be != _bf._size) */ + fpos_t _offset; /* current lseek offset */ + + struct pthread_mutex *_fl_mutex; /* used for MT-safety */ + struct pthread *_fl_owner; /* current owner */ + int _fl_count; /* recursive lock count */ + int _orientation; /* orientation for fwide() */ + __mbstate_t _mbstate; /* multibyte conversion state */ +}; +#ifndef _STDFILE_DECLARED +#define _STDFILE_DECLARED +typedef struct __sFILE FILE; +#endif +#ifndef _STDSTREAM_DECLARED +__BEGIN_DECLS +extern FILE *__stdinp; +extern FILE *__stdoutp; +extern FILE *__stderrp; +__END_DECLS +#define _STDSTREAM_DECLARED +#endif + +#define __SLBF 0x0001 /* line buffered */ +#define __SNBF 0x0002 /* unbuffered */ +#define __SRD 0x0004 /* OK to read */ +#define __SWR 0x0008 /* OK to write */ + /* RD and WR are never simultaneously asserted */ +#define __SRW 0x0010 /* open for reading & writing */ +#define __SEOF 0x0020 /* found EOF */ +#define __SERR 0x0040 /* found error */ +#define __SMBF 0x0080 /* _buf is from malloc */ +#define __SAPP 0x0100 /* fdopen()ed in append mode */ +#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ +#define __SOPT 0x0400 /* do fseek() optimization */ +#define __SNPT 0x0800 /* do not do fseek() optimization */ +#define __SOFF 0x1000 /* set iff _offset is in fact correct */ +#define __SMOD 0x2000 /* true => fgetln modified _p text */ +#define __SALC 0x4000 /* allocate string space dynamically */ +#define __SIGN 0x8000 /* ignore this file in _fwalk */ + +/* + * The following three definitions are for ANSI C, which took them + * from System V, which brilliantly took internal interface macros and + * made them official arguments to setvbuf(), without renaming them. + * Hence, these ugly _IOxxx names are *supposed* to appear in user code. + * + * Although numbered as their counterparts above, the implementation + * does not rely on this. + */ +#define _IOFBF 0 /* setvbuf should set fully buffered */ +#define _IOLBF 1 /* setvbuf should set line buffered */ +#define _IONBF 2 /* setvbuf should set unbuffered */ + +#define BUFSIZ 1024 /* size of buffer used by setbuf */ +#define EOF (-1) + +/* + * FOPEN_MAX is a minimum maximum, and is the number of streams that + * stdio can provide without attempting to allocate further resources + * (which could fail). Do not use this for anything. + */ + /* must be == _POSIX_STREAM_MAX <limits.h> */ +#ifndef FOPEN_MAX +#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */ +#endif +#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */ + +/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ +#if __XSI_VISIBLE +#define P_tmpdir "/tmp/" +#endif +#define L_tmpnam 1024 /* XXX must be == PATH_MAX */ +#define TMP_MAX 308915776 + +#ifndef SEEK_SET +#define SEEK_SET 0 /* set file offset to offset */ +#endif +#ifndef SEEK_CUR +#define SEEK_CUR 1 /* set file offset to current plus offset */ +#endif +#ifndef SEEK_END +#define SEEK_END 2 /* set file offset to EOF plus offset */ +#endif + +#define stdin __stdinp +#define stdout __stdoutp +#define stderr __stderrp + +__BEGIN_DECLS +#ifdef _XLOCALE_H_ +#include <xlocale/_stdio.h> +#endif +/* + * Functions defined in ANSI C standard. + */ +void clearerr(FILE *); +int fclose(FILE *); +int feof(FILE *); +int ferror(FILE *); +int fflush(FILE *); +int fgetc(FILE *); +int fgetpos(FILE * __restrict, fpos_t * __restrict); +char *fgets(char * __restrict, int, FILE * __restrict); +FILE *fopen(const char * __restrict, const char * __restrict); +int fprintf(FILE * __restrict, const char * __restrict, ...); +int fputc(int, FILE *); +int fputs(const char * __restrict, FILE * __restrict); +size_t fread(void * __restrict, size_t, size_t, FILE * __restrict); +FILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict); +int fscanf(FILE * __restrict, const char * __restrict, ...); +int fseek(FILE *, long, int); +int fsetpos(FILE *, const fpos_t *); +long ftell(FILE *); +size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict); +int getc(FILE *); +int getchar(void); +char *gets(char *); +void perror(const char *); +int printf(const char * __restrict, ...); +int putc(int, FILE *); +int putchar(int); +int puts(const char *); +int remove(const char *); +int rename(const char *, const char *); +void rewind(FILE *); +int scanf(const char * __restrict, ...); +void setbuf(FILE * __restrict, char * __restrict); +int setvbuf(FILE * __restrict, char * __restrict, int, size_t); +int sprintf(char * __restrict, const char * __restrict, ...); +int sscanf(const char * __restrict, const char * __restrict, ...); +FILE *tmpfile(void); +char *tmpnam(char *); +int ungetc(int, FILE *); +int vfprintf(FILE * __restrict, const char * __restrict, + __va_list); +int vprintf(const char * __restrict, __va_list); +int vsprintf(char * __restrict, const char * __restrict, + __va_list); + +#if __ISO_C_VISIBLE >= 1999 +int snprintf(char * __restrict, size_t, const char * __restrict, + ...) __printflike(3, 4); +int vfscanf(FILE * __restrict, const char * __restrict, __va_list) + __scanflike(2, 0); +int vscanf(const char * __restrict, __va_list) __scanflike(1, 0); +int vsnprintf(char * __restrict, size_t, const char * __restrict, + __va_list) __printflike(3, 0); +int vsscanf(const char * __restrict, const char * __restrict, __va_list) + __scanflike(2, 0); +#endif + +/* + * Functions defined in all versions of POSIX 1003.1. + */ +#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 199506) +#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */ +#endif + +#if __POSIX_VISIBLE +#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ + +char *ctermid(char *); +FILE *fdopen(int, const char *); +int fileno(FILE *); +#endif /* __POSIX_VISIBLE */ + +#if __POSIX_VISIBLE >= 199209 +int pclose(FILE *); +FILE *popen(const char *, const char *); +#endif + +#if __POSIX_VISIBLE >= 199506 +int ftrylockfile(FILE *); +void flockfile(FILE *); +void funlockfile(FILE *); + +/* + * These are normally used through macros as defined below, but POSIX + * requires functions as well. + */ +int getc_unlocked(FILE *); +int getchar_unlocked(void); +int putc_unlocked(int, FILE *); +int putchar_unlocked(int); +#endif +#if __BSD_VISIBLE +void clearerr_unlocked(FILE *); +int feof_unlocked(FILE *); +int ferror_unlocked(FILE *); +int fileno_unlocked(FILE *); +#endif + +#if __POSIX_VISIBLE >= 200112 +int fseeko(FILE *, __off_t, int); +__off_t ftello(FILE *); +#endif + +#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 +int getw(FILE *); +int putw(int, FILE *); +#endif /* BSD or X/Open before issue 6 */ + +#if __XSI_VISIBLE +char *tempnam(const char *, const char *); +#endif + +#if __POSIX_VISIBLE >= 200809 +FILE *fmemopen(void * __restrict, size_t, const char * __restrict); +ssize_t getdelim(char ** __restrict, size_t * __restrict, int, + FILE * __restrict); +FILE *open_memstream(char **, size_t *); +int renameat(int, const char *, int, const char *); +int vdprintf(int, const char * __restrict, __va_list); + +/* + * Every programmer and his dog wrote functions called getline() and dprintf() + * before POSIX.1-2008 came along and decided to usurp the names, so we + * don't prototype them by default unless one of the following is true: + * a) the app has requested them specifically by defining _WITH_GETLINE or + * _WITH_DPRINTF, respectively + * b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE + * c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE + */ +#ifndef _WITH_GETLINE +#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) +#define _WITH_GETLINE +#elif defined(_POSIX_C_SOURCE) +#if _POSIX_C_SOURCE >= 200809 +#define _WITH_GETLINE +#endif +#endif +#endif + +#ifdef _WITH_GETLINE +ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict); +#endif + +#ifndef _WITH_DPRINTF +#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) +#define _WITH_DPRINTF +#elif defined(_POSIX_C_SOURCE) +#if _POSIX_C_SOURCE >= 200809 +#define _WITH_DPRINTF +#endif +#endif +#endif + +#ifdef _WITH_DPRINTF +int (dprintf)(int, const char * __restrict, ...); +#endif + +#endif /* __POSIX_VISIBLE >= 200809 */ + +/* + * Routines that are purely local. + */ +#if __BSD_VISIBLE +int asprintf(char **, const char *, ...) __printflike(2, 3); +char *ctermid_r(char *); +void fcloseall(void); +char *fgetln(FILE *, size_t *); +const char *fmtcheck(const char *, const char *) __format_arg(2); +int fpurge(FILE *); +void setbuffer(FILE *, char *, int); +int setlinebuf(FILE *); +int vasprintf(char **, const char *, __va_list) + __printflike(2, 0); + +/* + * The system error table contains messages for the first sys_nerr + * positive errno values. Use strerror() or strerror_r() from <string.h> + * instead. + */ +extern const int sys_nerr; +extern const char * const sys_errlist[]; + +/* + * Stdio function-access interface. + */ +FILE *funopen(const void *, + int (*)(void *, char *, int), + int (*)(void *, const char *, int), + fpos_t (*)(void *, fpos_t, int), + int (*)(void *)); +#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) +#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) + +/* + * Portability hacks. See <sys/types.h>. + */ +#ifndef _FTRUNCATE_DECLARED +#define _FTRUNCATE_DECLARED +int ftruncate(int, __off_t); +#endif +#ifndef _LSEEK_DECLARED +#define _LSEEK_DECLARED +__off_t lseek(int, __off_t, int); +#endif +#ifndef _MMAP_DECLARED +#define _MMAP_DECLARED +void *mmap(void *, size_t, int, int, int, __off_t); +#endif +#ifndef _TRUNCATE_DECLARED +#define _TRUNCATE_DECLARED +int truncate(const char *, __off_t); +#endif +#endif /* __BSD_VISIBLE */ + +/* + * Functions internal to the implementation. + */ +int __srget(FILE *); +int __swbuf(int, FILE *); + +/* + * The __sfoo macros are here so that we can + * define function versions in the C library. + */ +#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) +#if defined(__GNUC__) && defined(__STDC__) +static __inline int __sputc(int _c, FILE *_p) { + if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) + return (*_p->_p++ = _c); + else + return (__swbuf(_c, _p)); +} +#else +/* + * This has been tuned to generate reasonable code on the vax using pcc. + */ +#define __sputc(c, p) \ + (--(p)->_w < 0 ? \ + (p)->_w >= (p)->_lbfsize ? \ + (*(p)->_p = (c)), *(p)->_p != '\n' ? \ + (int)*(p)->_p++ : \ + __swbuf('\n', p) : \ + __swbuf((int)(c), p) : \ + (*(p)->_p = (c), (int)*(p)->_p++)) +#endif + +extern int __isthreaded; + +#ifndef __cplusplus + +#define __sfeof(p) (((p)->_flags & __SEOF) != 0) +#define __sferror(p) (((p)->_flags & __SERR) != 0) +#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) +#define __sfileno(p) ((p)->_file) + + +#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) +#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) +#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) + +#if __POSIX_VISIBLE +#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) +#endif + +#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) +#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) + +#define getchar() getc(stdin) +#define putchar(x) putc(x, stdout) + +#if __BSD_VISIBLE +/* + * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 + * B.8.2.7 for the rationale behind the *_unlocked() macros. + */ +#define feof_unlocked(p) __sfeof(p) +#define ferror_unlocked(p) __sferror(p) +#define clearerr_unlocked(p) __sclearerr(p) +#define fileno_unlocked(p) __sfileno(p) +#endif +#if __POSIX_VISIBLE >= 199506 +#define getc_unlocked(fp) __sgetc(fp) +#define putc_unlocked(x, fp) __sputc(x, fp) + +#define getchar_unlocked() getc_unlocked(stdin) +#define putchar_unlocked(x) putc_unlocked(x, stdout) +#endif +#endif /* __cplusplus */ + +__END_DECLS +#endif /* !_STDIO_H_ */ |
