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Diffstat (limited to 'sh.h')
| -rw-r--r-- | sh.h | 1264 |
1 files changed, 1264 insertions, 0 deletions
@@ -0,0 +1,1264 @@ +/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.146 2006/07/03 22:59:01 mitr Exp $ */ +/* + * sh.h: Catch it all globals and includes file! + */ +/*- + * Copyright (c) 1980, 1991 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. 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. + */ +#ifndef _h_sh +#define _h_sh + +#include "config.h" + +#include <stddef.h> +#include <signal.h> + +#ifdef HAVE_ICONV +# include <iconv.h> +#endif + +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif + +#ifdef HAVE_INTTYPES_H +# include <inttypes.h> +#endif + +#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE) +typedef unsigned long intptr_t; +#endif + +#ifndef EXTERN +# define EXTERN extern +#else /* !EXTERN */ +# ifdef WINNT_NATIVE +# define IZERO = 0 +# define IZERO_STRUCT = {0} +# endif /* WINNT_NATIVE */ +#endif /* EXTERN */ + +#ifndef IZERO +# define IZERO +#endif /* IZERO */ +#ifndef IZERO_STRUCT +# define IZERO_STRUCT +#endif /* IZERO_STRUCT */ + +#ifndef WINNT_NATIVE +# define INIT_ZERO +# define INIT_ZERO_STRUCT +# define force_read xread +#endif /*!WINNT_NATIVE */ +/* + * Sanity + */ +#if defined(_POSIX_SOURCE) && !defined(POSIX) +# define POSIX +#endif + +#if defined(POSIXJOBS) && !defined(BSDJOBS) +# define BSDJOBS +#endif + +#ifdef SHORT_STRINGS +# ifdef WIDE_STRINGS +#include <wchar.h> +typedef wchar_t Char; +typedef unsigned long uChar; +typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */ +#define CHAR_ERR WEOF /* Pretty please, use bit 31... */ +#define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N) +#define reset_mbtowc() mbtowc(NULL, NULL, 0) +# else +typedef short Char; +typedef unsigned short uChar; +typedef int eChar; +#define CHAR_ERR (-1) +#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) +#define reset_mbtowc() ((void)0) +# endif +# define SAVE(a) (Strsave(str2short(a))) +#else +typedef char Char; +typedef unsigned char uChar; +typedef int eChar; +#define CHAR_ERR (-1) +#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) +#define reset_mbtowc() ((void)0) +# define SAVE(a) (strsave(a)) +#endif + +/* Elide unused argument warnings */ +#define USE(a) (void) (a) + +/* + * Return true if the path is absolute + */ +#if defined(WINNT_NATIVE) +# define ABSOLUTEP(p) ((p)[0] == '/' || \ + (Isalpha((p)[0]) && (p)[1] == ':')) +#elif defined(__CYGWIN__) +# define ABSOLUTEP(p) ((p)[0] == '/' || \ + (Isalpha((p)[0]) && (p)[1] == ':' && \ + ((p)[2] == '\0' || (p)[2] == '/'))) +#else /* !WINNT_NATIVE && !__CYGWIN__ */ +# define ABSOLUTEP(p) (*(p) == '/') +#endif /* WINNT_NATIVE || __CYGWIN__ */ + +/* + * Fundamental definitions which may vary from system to system. + * + * BUFSIZE The i/o buffering size; also limits word size + * MAILINTVL How often to mailcheck; more often is more expensive + */ +#ifdef BUFSIZE +# if BUFSIZE < 4096 +# undef BUFSIZE +# define BUFSIZE 4096 /* buffer size should be no less than this */ +# endif +#else +# define BUFSIZE 4096 +#endif /* BUFSIZE */ + +#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ +#define MAILINTVL 600 /* 10 minutes */ + +#ifndef INBUFSIZE +# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ +#endif /* INBUFSIZE */ + + +/* + * What our builtin echo looks like + */ +#define NONE_ECHO 0 +#define BSD_ECHO 1 +#define SYSV_ECHO 2 +#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) + +#ifndef ECHO_STYLE +# if SYSVREL > 0 +# define ECHO_STYLE SYSV_ECHO +# else /* SYSVREL == 0 */ +# define ECHO_STYLE BSD_ECHO +# endif /* SYSVREL */ +#endif /* ECHO_STYLE */ + +/* + * The shell moves std in/out/diag and the old std input away from units + * 0, 1, and 2 so that it is easy to set up these standards for invoked + * commands. + */ +#define FSAFE 5 /* We keep the first 5 descriptors untouched */ +#define FSHTTY 15 /* /dev/tty when manip pgrps */ +#define FSHIN 16 /* Preferred desc for shell input */ +#define FSHOUT 17 /* ... shell output */ +#define FSHDIAG 18 /* ... shell diagnostics */ +#define FOLDSTD 19 /* ... old std input */ + +#ifdef PROF +#define xexit(n) done(n) +#endif + +#ifdef cray +# define word word_t /* sys/types.h defines word.. bad move! */ +#endif + +#include <sys/types.h> + +#ifdef cray +# undef word +#endif + +/* + * Path separator in environment variables + */ +#ifndef PATHSEP +# if defined(__EMX__) || defined(WINNT_NATIVE) +# define PATHSEP ';' +# else /* unix */ +# define PATHSEP ':' +# endif /* __EMX__ || WINNT_NATIVE */ +#endif /* !PATHSEP */ + +#if defined(__HP_CXD_SPP) && !defined(__hpux) +# include <sys/cnx_stat.h> +# define stat stat64 +# define fstat fstat64 +# define lstat lstat64 +#endif /* __HP_CXD_SPP && !__hpux */ + +/* + * This macro compares the st_dev field of struct stat. On aix on ibmESA + * st_dev is a structure, so comparison does not work. + */ +#ifndef DEV_DEV_COMPARE +# define DEV_DEV_COMPARE(x,y) ((x) == (y)) +#endif /* DEV_DEV_COMPARE */ + +#ifdef _SEQUENT_ +# include <sys/procstats.h> +#endif /* _SEQUENT_ */ +#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) +# include <sys/times.h> +#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ + +#ifdef NLS +# include <locale.h> +#endif /* NLS */ + + +#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) +# include <sys/param.h> +#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ +#include <sys/stat.h> + +#if defined(BSDTIMES) || defined(BSDLIMIT) +# include <sys/time.h> +# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) +# include "/usr/ucbinclude/sys/resource.h" +# else +# ifdef convex +# define sysrusage cvxrusage +# include <sys/sysinfo.h> +# else +# define sysrusage rusage +# include <sys/resource.h> +# endif /* convex */ +# endif /* SYSVREL>3 */ +#endif /* BSDTIMES */ + +#ifndef WINNT_NATIVE +# ifndef POSIX +# ifdef TERMIO +# include <termio.h> +# else /* SGTTY */ +# include <sgtty.h> +# endif /* TERMIO */ +# else /* POSIX */ +# ifndef _UWIN +# include <termios.h> +# else +# include <termio.h> +# endif /* _UWIN */ +# if SYSVREL > 3 +# undef TIOCGLTC /* we don't need those, since POSIX has them */ +# undef TIOCSLTC +# undef CSWTCH +# define CSWTCH _POSIX_VDISABLE /* So job control works */ +# endif /* SYSVREL > 3 */ +# endif /* POSIX */ +#endif /* WINNT_NATIVE */ + +#ifdef sonyrisc +# include <sys/ttold.h> +#endif /* sonyrisc */ + +#if defined(POSIX) && !defined(WINNT_NATIVE) +# include <unistd.h> + +/* + * the gcc+protoize version of <stdlib.h> + * redefines malloc(), so we define the following + * to avoid it. + */ +# if defined(SYSMALLOC) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) +# define NO_FIX_MALLOC +# include <stdlib.h> +# else /* glibc */ +# define _GNU_STDLIB_H +# define malloc __malloc +# define free __free +# define calloc __calloc +# define realloc __realloc +# include <stdlib.h> +# undef malloc +# undef free +# undef calloc +# undef realloc +# endif /* glibc || sgi */ +#endif /* POSIX && !WINNT_NATIVE */ +#include <limits.h> + +#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) +# if !defined(pyr) && !defined(stellar) +# include <time.h> +# ifdef _MINIX +# define HZ CLOCKS_PER_SEC +# endif /* _MINIX */ +# endif /* !pyr && !stellar */ +#endif /* SYSVREL > 0 || _IBMR2 */ + +/* In the following ifdef the DECOSF1 has been commented so that later + * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... + */ +#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) +# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) +# include <sys/ioctl.h> +# endif +#endif + +#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) +#undef CSWTCH +#define CSWTCH _POSIX_VDISABLE +#endif + +#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) +# include <sys/filio.h> +#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ + +#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) +# include <sys/file.h> +#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ + +#if !defined(O_RDONLY) || !defined(O_NDELAY) +# include <fcntl.h> +#endif +#ifndef O_LARGEFILE +# define O_LARGEFILE 0 +#endif + +#include <errno.h> + +#include <setjmp.h> + +#include <stdarg.h> + +#ifdef HAVE_DIRENT_H +# include <dirent.h> +#else +# ifdef HAVE_NDIR_H +# include <ndir.h> +# else +# include <sys/dir.h> +# endif +# define dirent direct +#endif /* HAVE_DIRENT_H */ +#ifndef HAVE_STRUCT_DIRENT_D_INO +# define d_ino d_fileno +#endif +#if defined(hpux) || defined(sgi) || defined(OREO) +# include <stdio.h> /* So the fgetpwent() prototypes work */ +#endif /* hpux || sgi || OREO */ +#ifndef WINNT_NATIVE +#include <pwd.h> +#include <grp.h> +#endif /* WINNT_NATIVE */ +#ifdef HAVE_SHADOW_H +# include <shadow.h> +#endif /* HAVE_SHADOW_H */ +#ifdef HAVE_AUTH_H +# include <auth.h> +#endif /* HAVE_AUTH_H */ +#if defined(BSD) && !defined(POSIX) +# include <strings.h> +# define strchr(a, b) index(a, b) +# define strrchr(a, b) rindex(a, b) +#else +# include <string.h> +#endif /* BSD */ + +/* + * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not + * include it yet, so we include it here + */ +#if defined(sgi) && SYSVREL > 3 +# include <sys/cdefs.h> +#endif /* sgi && SYSVREL > 3 */ + +#ifdef REMOTEHOST +# ifdef ISC +# undef MAXHOSTNAMELEN /* Busted headers? */ +# endif + +# include <netinet/in.h> +# include <arpa/inet.h> +# include <sys/socket.h> +# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) +# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ +# if !defined(sgi) +# if !defined(__CYGWIN__) +# define INET6 +# endif /* __CYGWIN__ */ +# endif /* sgi */ +# endif /* __APPLE__ */ +# endif +# include <sys/uio.h> /* For struct iovec */ +#endif /* REMOTEHOST */ + +#ifdef PURIFY +/* exit normally, allowing purify to trace leaks */ +# define _exit exit +typedef int pret_t; +#else /* !PURIFY */ +/* + * If your compiler complains, then you can either + * throw it away and get gcc or, use the following define + * and get rid of the typedef. + * [The 4.2/3BSD vax compiler does not like that] + * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com + */ +# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) +# define pret_t void +# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ +typedef void pret_t; +# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ +#endif /* PURIFY */ + +/* + * ASCII vs. EBCDIC + */ +#if 'Z' - 'A' == 25 +# ifndef IS_ASCII +# define IS_ASCII +# endif +#endif + +#include "sh.types.h" + +#if !HAVE_DECL_GETPGRP +# ifndef GETPGRP_VOID +extern pid_t getpgrp (int); +# else +extern pid_t getpgrp (void); +# endif +#endif + +#ifndef lint +typedef ptr_t memalign_t; +#else +typedef union { + char am_char, *am_char_p; + short am_short, *am_short_p; + int am_int, *am_int_p; + long am_long, *am_long_p; + float am_float, *am_float_p; + double am_double, *am_double_p; +} *memalign_t; + +# define malloc lint_malloc +# define free lint_free +# define realloc lint_realloc +# define calloc lint_calloc +#endif + +#ifdef SYSMALLOC +# define xmalloc(i) smalloc(i) +# define xrealloc(p, i) srealloc(p, i) +# define xcalloc(n, s) scalloc(n, s) +# define xfree sfree +#else +# define xmalloc(i) malloc(i) +# define xrealloc(p, i) realloc(p, i) +# define xcalloc(n, s) calloc(n, s) +# define xfree free +#endif /* SYSMALLOC */ +#include "sh.char.h" +#include "sh.err.h" +#include "sh.dir.h" +#include "sh.proc.h" + +#include "pathnames.h" + + +/* + * C shell + * + * Bill Joy, UC Berkeley + * October, 1978; May 1980 + * + * Jim Kulp, IIASA, Laxenburg Austria + * April, 1980 + */ + +#ifdef HESIOD +# include <hesiod.h> +#endif /* HESIOD */ + +#ifdef REMOTEHOST +# include <netdb.h> +#endif /* REMOTEHOST */ + +#ifndef MAXHOSTNAMELEN +# ifdef HOST_NAME_MAX +# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) +# elif defined(SCO) && (SYSVREL > 3) +# include <sys/socket.h> +# else +# define MAXHOSTNAMELEN 256 +# endif +#endif /* MAXHOSTNAMELEN */ + + + +#define eq(a, b) (Strcmp(a, b) == 0) + +/* globone() flags */ +#define G_ERROR 0 /* default action: error if multiple words */ +#define G_IGNORE 1 /* ignore the rest of the words */ +#define G_APPEND 2 /* make a sentence by cat'ing the words */ + +/* + * Global flags + */ +EXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ + +#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) +# define CLOSE_ON_EXEC +#else +EXTERN int didcch IZERO; /* Have closed unused fd's for child */ +#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ + +EXTERN int didfds IZERO; /* Have setup i/o fd's for child */ +EXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ +EXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ +EXTERN int child IZERO; /* Child shell ... errors cause exit */ +EXTERN int haderr IZERO; /* Reset was because of an error */ +EXTERN int intty IZERO; /* Input is a tty */ +EXTERN int intact IZERO; /* We are interactive... therefore prompt */ +EXTERN int justpr IZERO; /* Just print because of :p hist mod */ +EXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ +EXTERN int neednote IZERO; /* Need to pnotify() */ +EXTERN int noexec IZERO; /* Don't execute, just syntax check */ +EXTERN int pjobs IZERO; /* want to print jobs if interrupted */ +EXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ +EXTERN int havhash IZERO; /* path hashing is available */ +EXTERN int editing IZERO; /* doing filename expansion and line editing */ +EXTERN int noediting IZERO; /* initial $term defaulted to noedit */ +EXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ +EXTERN int isoutatty IZERO; /* is SHOUT a tty */ +EXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ +EXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ +EXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ +EXTERN int arun IZERO; /* Currently running multi-line-aliases */ +EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ +EXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ +/* We received a window change event */ +EXTERN volatile sig_atomic_t windowchg IZERO; +#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) +EXTERN int dspmbyte_ls; +#endif + +/* + * Global i/o info + */ +EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ +EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ +extern Char *ffile; /* Name of shell file for $0 */ +extern int dolzero; /* if $?0 should return true... */ + +extern char *seterr; /* Error message from scanner/parser */ +#ifndef errno +extern int errno; /* Error from C library routines */ +#endif +extern int exitset; +/* Temp name for << shell files in /tmp, for xfree() */ +EXTERN Char *shtemp IZERO; + +#ifdef BSDTIMES +EXTERN struct timeval time0; /* Time at which the shell started */ +EXTERN struct sysrusage ru0; +#else +# ifdef _SEQUENT_ +EXTERN timeval_t time0; /* time at which shell started */ +EXTERN struct process_stats ru0; +# else /* _SEQUENT_ */ +# ifndef POSIX +EXTERN time_t time0; /* time at which shell started */ +# else /* POSIX */ +EXTERN clock_t time0; /* time at which shell started */ +EXTERN clock_t clk_tck; +# endif /* POSIX */ +EXTERN struct tms shtimes; /* shell and child times for process timing */ +# endif /* _SEQUENT_ */ +EXTERN time_t seconds0; +#endif /* BSDTIMES */ + +#ifndef HZ +# define HZ 100 /* for division into seconds */ +#endif + +/* + * Miscellany + */ +EXTERN Char *doldol; /* Character pid for $$ */ +EXTERN pid_t backpid; /* pid of the last background job */ + +/* + * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now + * cause pid's could be unsigned and that would break our -1 flag, and + * uid_t and gid_t are not defined in all the systems so I would have to + * make special cases for them. In the future... + */ +EXTERN uid_t uid, euid; /* Invokers real and effective */ +EXTERN gid_t gid, egid; /* User and group ids */ +EXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ + shpgrp, /* Pgrp of shell */ + tpgrp; /* Terminal process group */ + /* If tpgrp is -1, leave tty alone! */ + +EXTERN Char *Prompt; /* The actual printed prompt or NULL */ +EXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ + +/* + * To be able to redirect i/o for builtins easily, the shell moves the i/o + * descriptors it uses away from 0,1,2. + * Ideally these should be in units which are closed across exec's + * (this saves work) but for version 6, this is not usually possible. + * The desired initial values for these descriptors are defined in + * sh.local.h. + */ +EXTERN int SHIN IZERO; /* Current shell input (script) */ +EXTERN int SHOUT IZERO; /* Shell output */ +EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ +EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ + + +#if SYSVREL == 4 && defined(_UTS) +/* + * From: fadden@uts.amdahl.com (Andy McFadden) + * we need sigsetjmp for UTS4, but not UTS2.1 + */ +# define SIGSETJMP +#endif + +/* + * Error control + * + * Errors in scanning and parsing set up an error message to be printed + * at the end and complete. Other errors always cause a reset. + * Because of source commands and .cshrc we need nested error catches. + */ + +#ifdef SIGSETJMP + typedef struct { sigjmp_buf j; } jmp_buf_t; +# define setexit() sigsetjmp(reslab.j) +# define _reset() siglongjmp(reslab.j, 1) +#else + typedef struct { jmp_buf j; } jmp_buf_t; +# define setexit() setjmp(reslab.j) +# define _reset() longjmp(reslab.j, 1) +#endif + +#define getexit(a) (void) ((a) = reslab) +#define resexit(a) (void) (reslab = (a)) + +#define cpybin(a, b) (void) ((a) = (b)) + +extern jmp_buf_t reslab; + +EXTERN Char *gointr; /* Label for an onintr transfer */ + +extern struct sigaction parintr; /* Parents interrupt catch */ +extern struct sigaction parterm; /* Parents terminate catch */ + +/* + * Lexical definitions. + * + * All lexical space is allocated dynamically. + * The eighth/sixteenth bit of characters is used to prevent recognition, + * and eventually stripped. + */ +#define META 0200 +#define ASCII 0177 +#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ +/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ +# define QUOTE 0x40000000 +# define TRIM 0x3FFFFFFF /* Mask to strip quote bit */ +# define UNDER 0x20000000 /* Underline flag */ +# define BOLD 0x10000000 /* Bold flag */ +# define STANDOUT 0x08000000 /* Standout flag */ +# define LITERAL 0x04000000 /* Literal character flag */ +# define ATTRIBUTES 0x3C000000 /* The bits used for attributes */ +# define INVALID_BYTE 0x00200000 /* Invalid character on input */ +# define CHAR 0x003FFFFF /* Mask to mask out the character */ +#elif defined (SHORT_STRINGS) +# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ +# define TRIM 0073777 /* Mask to strip quote/lit bit */ +# define UNDER 0040000 /* Underline flag */ +# define BOLD 0020000 /* Bold flag */ +# define STANDOUT 0010000 /* Standout flag */ +# define LITERAL 0004000 /* Literal character flag */ +# define ATTRIBUTES 0074000 /* The bits used for attributes */ +# define INVALID_BYTE 0 +# define CHAR 0000377 /* Mask to mask out the character */ +#else +# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ +# define TRIM 0177 /* Mask to strip quote bit */ +# define UNDER 0000000 /* No extra bits to do both */ +# define BOLD 0000000 /* Bold flag */ +# define STANDOUT META /* Standout flag */ +# define LITERAL 0000000 /* Literal character flag */ +# define ATTRIBUTES 0200 /* The bits used for attributes */ +# define INVALID_BYTE 0 +# define CHAR 0000177 /* Mask to mask out the character */ +#endif +#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) + +EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ + +/* + * Each level of input has a buffered input structure. + * There are one or more blocks of buffered input for each level, + * exactly one if the input is seekable and tell is available. + * In other cases, the shell buffers enough blocks to keep all loops + * in the buffer. + * + * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but + * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for + * fbuf indexing). + * + * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there + * is no difference between byte and character offsets. + */ +EXTERN struct Bin { + off_t Bfseekp; /* Seek pointer, generally != lseek() value */ + off_t Bfbobp; /* Seekp of beginning of buffers */ + off_t Bfeobp; /* Seekp of end of buffers */ + int Bfblocks; /* Number of buffer blocks */ + Char **Bfbuf; /* The array of buffer blocks */ +#ifdef WIDE_STRINGS + /* Number of bytes in each character if (cantell) */ + unsigned char Bfclens[BUFSIZE + 1]; +#endif +} B; + +/* + * This structure allows us to seek inside aliases + */ +struct Ain { + int type; +#define TCSH_I_SEEK 0 /* Invalid seek */ +#define TCSH_A_SEEK 1 /* Alias seek */ +#define TCSH_F_SEEK 2 /* File seek */ +#define TCSH_E_SEEK 3 /* Eval seek */ + union { + off_t _f_seek; /* A byte offset if (cantell) */ + Char* _c_seek; + } fc; +#define f_seek fc._f_seek +#define c_seek fc._c_seek + Char **a_seek; +} ; + +extern int aret; /* Type of last char returned */ +#define SEEKEQ(a, b) ((a)->type == (b)->type && \ + (a)->f_seek == (b)->f_seek && \ + (a)->a_seek == (b)->a_seek) + +#define fseekp B.Bfseekp +#define fbobp B.Bfbobp +#define feobp B.Bfeobp +#define fblocks B.Bfblocks +#define fbuf B.Bfbuf +#define fclens B.Bfclens + +/* + * The shell finds commands in loops by reseeking the input + * For whiles, in particular, it reseeks to the beginning of the + * line the while was on; hence the while placement restrictions. + */ +EXTERN struct Ain lineloc; + +EXTERN int cantell; /* Is current source tellable ? */ + +/* + * Input lines are parsed into doubly linked circular + * lists of words of the following form. + */ +struct wordent { + Char *word; + struct wordent *prev; + struct wordent *next; +}; + +/* + * During word building, both in the initial lexical phase and + * when expanding $ variable substitutions, expansion by `!' and `$' + * must be inhibited when reading ahead in routines which are themselves + * processing `!' and `$' expansion or after characters such as `\' or in + * quotations. The following flags are passed to the getC routines + * telling them which of these substitutions are appropriate for the + * next character to be returned. + */ +#define DODOL 1 +#define DOEXCL 2 +#define DOALL DODOL|DOEXCL + +/* + * Labuf implements a general buffer for lookahead during lexical operations. + * Text which is to be placed in the input stream can be stuck here. + * We stick parsed ahead $ constructs during initial input, + * process id's from `$$', and modified variable values (from qualifiers + * during expansion in sh.dol.c) here. + */ +extern struct Strbuf labuf; +EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ + +/* + * Parser structure + * + * Each command is parsed to a tree of command structures and + * flags are set bottom up during this process, to be propagated down + * as needed during the semantics/exeuction pass (sh.sem.c). + */ +struct command { + unsigned char t_dtyp; /* Type of node */ +#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ +#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ +#define NODE_PIPE 3 /* t_dlef | t_drit */ +#define NODE_LIST 4 /* t_dlef ; t_drit */ +#define NODE_OR 5 /* t_dlef || t_drit */ +#define NODE_AND 6 /* t_dlef && t_drit */ + unsigned char t_nice; /* Nice value */ +#ifdef apollo + unsigned char t_systype; /* System environment */ +#endif + unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ +/* save these when re-doing */ +#ifndef apollo +#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) +#else +#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) +#endif +#define F_AMPERSAND (1<<0) /* executes in background */ +#define F_APPEND (1<<1) /* output is redirected >> */ +#define F_PIPEIN (1<<2) /* input is a pipe */ +#define F_PIPEOUT (1<<3) /* output is a pipe */ +#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ +#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ +/* spare */ +#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ +#define F_OVERWRITE (1<<8) /* output was ! */ +#define F_READ (1<<9) /* input redirection is << */ +#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ +#define F_NICE (1<<11) /* t_nice is meaningful */ +#define F_NOHUP (1<<12) /* nohup this command */ +#define F_TIME (1<<13) /* time this command */ +#define F_BACKQ (1<<14) /* command is in `` */ +#define F_HUP (1<<15) /* hup this command */ +#ifdef apollo +#define F_VER (1<<16) /* execute command under SYSTYPE */ +#endif + union { + Char *T_dlef; /* Input redirect word */ + struct command *T_dcar; /* Left part of list/pipe */ + } L; + union { + Char *T_drit; /* Output redirect word */ + struct command *T_dcdr; /* Right part of list/pipe */ + } R; +#define t_dlef L.T_dlef +#define t_dcar L.T_dcar +#define t_drit R.T_drit +#define t_dcdr R.T_dcdr + Char **t_dcom; /* Command/argument vector */ + struct command *t_dspr; /* Pointer to ()'d subtree */ +}; + + +/* + * The keywords for the parser + */ +#define TC_BREAK 0 +#define TC_BRKSW 1 +#define TC_CASE 2 +#define TC_DEFAULT 3 +#define TC_ELSE 4 +#define TC_END 5 +#define TC_ENDIF 6 +#define TC_ENDSW 7 +#define TC_EXIT 8 +#define TC_FOREACH 9 +#define TC_GOTO 10 +#define TC_IF 11 +#define TC_LABEL 12 +#define TC_LET 13 +#define TC_SET 14 +#define TC_SWITCH 15 +#define TC_TEST 16 +#define TC_THEN 17 +#define TC_WHILE 18 + +/* + * These are declared here because they want to be + * initialized in sh.init.c (to allow them to be made readonly) + */ + +#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) + /* Avoid hpux ansi mode spurious warnings */ +typedef void (*bfunc_t) (); +#else +typedef void (*bfunc_t) (Char **, struct command *); +#endif /* hpux && __STDC__ && !__GNUC__ */ + +extern const struct biltins { + const char *bname; + bfunc_t bfunct; + int minargs, maxargs; +} bfunc[]; +extern int nbfunc; +#ifdef WINNT_NATIVE +extern struct biltins nt_bfunc[]; +extern int nt_nbfunc; +#endif /* WINNT_NATIVE*/ +extern int bequiet; + +extern struct srch { + const char *s_name; + int s_value; +} srchn[]; +extern int nsrchn; + +/* + * Structure defining the existing while/foreach loops at this + * source level. Loops are implemented by seeking back in the + * input. For foreach (fe), the word list is attached here. + */ +EXTERN struct whyle { + struct Ain w_start; /* Point to restart loop */ + struct Ain w_end; /* End of loop (0 if unknown) */ + Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ + Char *w_fename; /* Name for fe */ + struct whyle *w_next; /* Next (more outer) loop */ +} *whyles; + +/* + * Variable structure + * + * Aliases and variables are stored in AVL balanced binary trees. + */ +EXTERN struct varent { + Char **vec; /* Array of words which is the value */ + Char *v_name; /* Name of variable/alias */ + int v_flags; /* Flags */ +#define VAR_ALL -1 +#define VAR_READONLY 1 +#define VAR_READWRITE 2 +#define VAR_NOGLOB 4 +#define VAR_FIRST 32 +#define VAR_LAST 64 + struct varent *v_link[3]; /* The links, see below */ + int v_bal; /* Balance factor */ +} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; + +#define v_left v_link[0] +#define v_right v_link[1] +#define v_parent v_link[2] + +#define adrof(v) adrof1(v, &shvhed) +#define varval(v) value1(v, &shvhed) + +/* + * The following are for interfacing redo substitution in + * aliases to the lexical routines. + */ +EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ +EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ +EXTERN Char **alvec IZERO_STRUCT, + *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ + +/* + * Filename/command name expansion variables + */ + +#ifdef __CYGWIN__ +# undef MAXPATHLEN +#endif /* __CYGWIN__ */ + +#ifndef MAXPATHLEN +# ifdef PATH_MAX +# define MAXPATHLEN PATH_MAX +# else +# define MAXPATHLEN 2048 +# endif +#endif /* MAXPATHLEN */ + +#ifndef HAVENOLIMIT +/* + * resource limits + */ +extern struct limits { + int limconst; + const char *limname; + int limdiv; + const char *limscale; +} limits[]; +#endif /* !HAVENOLIMIT */ + +/* + * History list + * + * Each history list entry contains an embedded wordlist + * from the scanner, a number for the event, and a reference count + * to aid in discarding old entries. + * + * Essentially "invisible" entries are put on the history list + * when history substitution includes modifiers, and thrown away + * at the next discarding since their event numbers are very negative. + */ +EXTERN struct Hist { + struct wordent Hlex; + int Hnum; + int Href; + time_t Htime; + Char *histline; + struct Hist *Hnext; +} Histlist IZERO_STRUCT; + +EXTERN struct wordent paraml; /* Current lexical word list */ +EXTERN int eventno; /* Next events number */ +EXTERN int lastev; /* Last event reference (default) */ + +EXTERN Char HIST; /* history invocation character */ +EXTERN Char HISTSUB; /* auto-substitute character */ +EXTERN Char PRCH; /* Prompt symbol for regular users */ +EXTERN Char PRCHROOT; /* Prompt symbol for root */ + +/* + * For operating systems with single case filenames (OS/2) + */ +#ifdef CASE_INSENSITIVE +# ifdef WIDE_STRINGS +# define samecase(x) (towlower(x)) +# else +# define samecase(x) (isupper((unsigned char)(x)) ? \ + tolower((unsigned char)(x)) : (x)) +# endif +#else +# define samecase(x) (x) +#endif /* CASE_INSENSITIVE */ + +/* + * strings.h: + */ +#ifndef SHORT_STRINGS +#define Strchr(a, b) strchr(a, b) +#define Strrchr(a, b) strrchr(a, b) +#define Strcat(a, b) strcat(a, b) +#define Strncat(a, b, c) strncat(a, b, c) +#define Strcpy(a, b) strcpy(a, b) +#define Strncpy(a, b, c) strncpy(a, b, c) +#define Strlen(a) strlen(a) +#define Strcmp(a, b) strcmp(a, b) +#define Strncmp(a, b, c) strncmp(a, b, c) +#define Strcasecmp(a, b) strcasecmp(a, b) + +#define Strspl(a, b) strspl(a, b) +#define Strnsave(a, b) strnsave(a, b) +#define Strsave(a) strsave(a) +#define Strend(a) strend(a) +#define Strstr(a, b) strstr(a, b) + +#define str2short(a) (a) +#define blk2short(a) saveblk(a) +#define short2blk(a) saveblk(a) +#define short2str(a) caching_strip(a) +#else +#ifdef WIDE_STRINGS +#define Strchr(a, b) wcschr(a, b) +#define Strrchr(a, b) wcsrchr(a, b) +#define Strcat(a, b) wcscat(a, b) +#define Strncat(a, b, c) wcsncat(a, b, c) +#define Strcpy(a, b) wcscpy(a, b) +#define Strncpy(a, b, c) wcsncpy(a, b, c) +#define Strlen(a) wcslen(a) +#define Strcmp(a, b) wcscmp(a, b) +#define Strncmp(a, b, c) wcsncmp(a, b, c) +#else +#define Strchr(a, b) s_strchr(a, b) +#define Strrchr(a, b) s_strrchr(a, b) +#define Strcat(a, b) s_strcat(a, b) +#define Strncat(a, b, c) s_strncat(a, b, c) +#define Strcpy(a, b) s_strcpy(a, b) +#define Strncpy(a, b, c) s_strncpy(a, b, c) +#define Strlen(a) s_strlen(a) +#define Strcmp(a, b) s_strcmp(a, b) +#define Strncmp(a, b, c) s_strncmp(a, b, c) +#endif +#define Strcasecmp(a, b) s_strcasecmp(a, b) + +#define Strspl(a, b) s_strspl(a, b) +#define Strnsave(a, b) s_strnsave(a, b) +#define Strsave(a) s_strsave(a) +#define Strend(a) s_strend(a) +#define Strstr(a, b) s_strstr(a, b) +#endif + +/* + * setname is a macro to save space (see sh.err.c) + */ +EXTERN const char *bname; + +#define setname(a) (bname = (a)) + +#ifdef VFORK +EXTERN Char *Vsav; +EXTERN Char *Vdp; +EXTERN Char *Vexpath; +EXTERN char **Vt; +#endif /* VFORK */ + +EXTERN Char **evalvec; +EXTERN Char *evalp; + +extern struct mesg { + const char *iname; /* name from /usr/include */ + const char *pname; /* print name */ +} mesg[]; + +/* word_chars is set by default to WORD_CHARS but can be overridden by + the worchars variable--if unset, reverts to WORD_CHARS */ + +EXTERN Char *word_chars; + +#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ + +EXTERN Char *STR_SHELLPATH; + +#ifdef _PATH_BSHELL +EXTERN Char *STR_BSHELL; +#endif +EXTERN Char *STR_WORD_CHARS; +EXTERN Char **STR_environ IZERO; + +extern int dont_free; /* Tell free that we are in danger if we free */ + +extern Char *INVPTR; +extern Char **INVPPTR; + +extern char *progname; +extern int tcsh; +extern int xlate_cr; +extern int output_raw; +extern int lbuffed; +extern time_t Htime; +extern int numeof; +extern int insource; +extern char linbuf[]; +extern char *linp; +extern int nsig; +#ifdef VFORK +extern int use_fork; +#endif +extern int tellwhat; +extern int NoNLSRebind; +#if !HAVE_DECL_ENVIRON +extern char **environ; +#endif + +#include "tc.h" + +#ifndef WINNT_NATIVE +# ifdef NLS_CATALOGS +# if defined(linux) || defined(__GNU__) || defined(__GLIBC__) +# include <locale.h> +# ifdef notdef +# include <localeinfo.h> /* Has this changed ? */ +# endif +# include <features.h> +# endif +# ifdef SUNOS4 + /* Who stole my nl_types.h? :-( + * All this stuff is in the man pages, but nowhere else? + * This does not link right now... + */ + typedef void *nl_catd; + extern const char * catgets (nl_catd, int, int, const char *); + nl_catd catopen (const char *, int); + int catclose (nl_catd); +# else +# ifdef __uxps__ +# define gettxt gettxt_ds +# endif +# include <nl_types.h> +# ifdef __uxps__ +# undef gettxt +# endif +# endif +# ifndef MCLoadBySet +# define MCLoadBySet 0 +# endif +EXTERN nl_catd catd; +# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) +# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) +# else +# define CGETS(b, c, d) xcatgets(catd, b, c, d) +# endif +# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) +# else +# define CGETS(b, c, d) d +# define CSAVS(b, c, d) d +# endif +#else /* WINNT_NATIVE */ +# define CGETS(b, c, d) nt_cgets( b, c, d) +# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) +#endif /* WINNT_NATIVE */ + +#if defined(FILEC) +extern int filec; +#endif /* FILEC */ + +#include "sh.decls.h" +/* + * Since on some machines characters are unsigned, and the signed + * keyword is not universally implemented, we treat all characters + * as unsigned and sign extend them where we need. + */ +#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) + +/* + * explanation for use by the "--help" option + */ +#define HELP_STRING "\ +-b file batch mode, read and execute commands from `file' \n\ +-c command run `command' from next argument \n\ +-d load directory stack from `~/.cshdirs' \n\ +-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ +-e exit on any error \n\ +-f start faster by ignoring the start-up file \n\ +-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ +-i interactive, even when input is not from a terminal \n\ +-l act as a login shell, must be the only option specified \n\ +-m load the start-up file, whether or not owned by effective user \n\ +-n file no execute mode, just check syntax of the following `file' \n\ +-q accept SIGQUIT for running under a debugger \n\ +-s read commands from standard input \n\ +-t read one line from standard input \n\ +-v echo commands after history substitution \n\ +-V like -v but including commands read from the start-up file \n\ +-x echo commands immediately before execution \n\ +-X like -x but including commands read from the start-up file \n\ +--help print this message and exit \n\ +--version print the version shell variable and exit \n\ +\nSee the tcsh(1) manual page for detailed information.\n" + +#include "tc.nls.h" + +#endif /* _h_sh */ |
