1232633Smp/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.165 2011/04/14 18:25:25 christos Exp $ */ 259243Sobrien/* 359243Sobrien * sh.h: Catch it all globals and includes file! 459243Sobrien */ 559243Sobrien/*- 659243Sobrien * Copyright (c) 1980, 1991 The Regents of the University of California. 759243Sobrien * All rights reserved. 859243Sobrien * 959243Sobrien * Redistribution and use in source and binary forms, with or without 1059243Sobrien * modification, are permitted provided that the following conditions 1159243Sobrien * are met: 1259243Sobrien * 1. Redistributions of source code must retain the above copyright 1359243Sobrien * notice, this list of conditions and the following disclaimer. 1459243Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1559243Sobrien * notice, this list of conditions and the following disclaimer in the 1659243Sobrien * documentation and/or other materials provided with the distribution. 17100616Smp * 3. Neither the name of the University nor the names of its contributors 1859243Sobrien * may be used to endorse or promote products derived from this software 1959243Sobrien * without specific prior written permission. 2059243Sobrien * 2159243Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2259243Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2359243Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2459243Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2559243Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2659243Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2759243Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2859243Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2959243Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3059243Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3159243Sobrien * SUCH DAMAGE. 3259243Sobrien */ 3359243Sobrien#ifndef _h_sh 3459243Sobrien#define _h_sh 3559243Sobrien 3659243Sobrien#include "config.h" 3759243Sobrien 38145479Smp#include <stddef.h> 39167465Smp#include <signal.h> 40145479Smp 41145479Smp#ifdef HAVE_ICONV 42145479Smp# include <iconv.h> 43100616Smp#endif 44145479Smp 45145479Smp#ifdef HAVE_STDINT_H 46145479Smp# include <stdint.h> 47100616Smp#endif 48100616Smp 49145479Smp#ifdef HAVE_INTTYPES_H 50145479Smp# include <inttypes.h> 51145479Smp#endif 52145479Smp 53145479Smp#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE) 54145479Smptypedef unsigned long intptr_t; 55145479Smp#endif 56145479Smp 5759243Sobrien#ifndef EXTERN 5859243Sobrien# define EXTERN extern 5959243Sobrien#else /* !EXTERN */ 6069408Sache# ifdef WINNT_NATIVE 6159243Sobrien# define IZERO = 0 6259243Sobrien# define IZERO_STRUCT = {0} 6369408Sache# endif /* WINNT_NATIVE */ 6459243Sobrien#endif /* EXTERN */ 6559243Sobrien 6659243Sobrien#ifndef IZERO 6759243Sobrien# define IZERO 6859243Sobrien#endif /* IZERO */ 6959243Sobrien#ifndef IZERO_STRUCT 7059243Sobrien# define IZERO_STRUCT 71145479Smp#endif /* IZERO_STRUCT */ 7259243Sobrien 7369408Sache#ifndef WINNT_NATIVE 7459243Sobrien# define INIT_ZERO 7559243Sobrien# define INIT_ZERO_STRUCT 76167465Smp# define force_read xread 7769408Sache#endif /*!WINNT_NATIVE */ 78232633Smp 79232633Smp#if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET) 80232633Smp#define AUTOSET_KANJI 81232633Smp#endif 8259243Sobrien/* 8359243Sobrien * Sanity 8459243Sobrien */ 8559243Sobrien#if defined(_POSIX_SOURCE) && !defined(POSIX) 8659243Sobrien# define POSIX 8759243Sobrien#endif 8859243Sobrien 8959243Sobrien#if defined(POSIXJOBS) && !defined(BSDJOBS) 9059243Sobrien# define BSDJOBS 9159243Sobrien#endif 9259243Sobrien 93232633Smp#define TMP_TEMPLATE ".XXXXXX" 94232633Smp 9559243Sobrien#ifdef SHORT_STRINGS 96167465Smp# ifdef WIDE_STRINGS 97145479Smp#include <wchar.h> 98232633Smp# ifdef UTF16_STRINGS 99232633Smptypedef wint_t Char; 100232633Smp# else 101145479Smptypedef wchar_t Char; 102232633Smp#endif 103145479Smptypedef unsigned long uChar; 104145479Smptypedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */ 105145479Smp#define CHAR_ERR WEOF /* Pretty please, use bit 31... */ 106145479Smp#define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N) 107232633Smp#define reset_mbtowc() TCSH_IGNORE(mbtowc(NULL, NULL, 0)) 108145479Smp# else 10959243Sobrientypedef short Char; 11059243Sobrientypedef unsigned short uChar; 111145479Smptypedef int eChar; 112145479Smp#define CHAR_ERR (-1) 113145479Smp#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 114145479Smp#define reset_mbtowc() ((void)0) 115145479Smp# endif 11659243Sobrien# define SAVE(a) (Strsave(str2short(a))) 11759243Sobrien#else 11859243Sobrientypedef char Char; 11959243Sobrientypedef unsigned char uChar; 120145479Smptypedef int eChar; 121145479Smp#define CHAR_ERR (-1) 122145479Smp#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 123145479Smp#define reset_mbtowc() ((void)0) 12459243Sobrien# define SAVE(a) (strsave(a)) 125145479Smp#endif 12659243Sobrien 127232633Smp#if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER) 128232633Smp#define __inline 129232633Smp#endif 13059243Sobrien/* Elide unused argument warnings */ 13159243Sobrien#define USE(a) (void) (a) 132232633Smp#define TCSH_IGNORE(a) tcsh_ignore((intptr_t)a) 133232633Smpstatic __inline void tcsh_ignore(intptr_t a) 134195609Smp{ 135195609Smp USE(a); 136195609Smp} 13759243Sobrien 13859243Sobrien/* 13959243Sobrien * Return true if the path is absolute 14059243Sobrien */ 141131962Smp#if defined(WINNT_NATIVE) 142100616Smp# define ABSOLUTEP(p) ((p)[0] == '/' || \ 143100616Smp (Isalpha((p)[0]) && (p)[1] == ':')) 144131962Smp#elif defined(__CYGWIN__) 145131962Smp# define ABSOLUTEP(p) ((p)[0] == '/' || \ 146131962Smp (Isalpha((p)[0]) && (p)[1] == ':' && \ 147131962Smp ((p)[2] == '\0' || (p)[2] == '/'))) 148100616Smp#else /* !WINNT_NATIVE && !__CYGWIN__ */ 14959243Sobrien# define ABSOLUTEP(p) (*(p) == '/') 150100616Smp#endif /* WINNT_NATIVE || __CYGWIN__ */ 15159243Sobrien 15259243Sobrien/* 15359243Sobrien * Fundamental definitions which may vary from system to system. 15459243Sobrien * 15559243Sobrien * BUFSIZE The i/o buffering size; also limits word size 15659243Sobrien * MAILINTVL How often to mailcheck; more often is more expensive 15759243Sobrien */ 15859243Sobrien#ifdef BUFSIZE 15961524Sobrien# if BUFSIZE < 4096 16059243Sobrien# undef BUFSIZE 16161524Sobrien# define BUFSIZE 4096 /* buffer size should be no less than this */ 16259243Sobrien# endif 16359243Sobrien#else 16461524Sobrien# define BUFSIZE 4096 16559243Sobrien#endif /* BUFSIZE */ 16659243Sobrien 16759243Sobrien#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 16859243Sobrien#define MAILINTVL 600 /* 10 minutes */ 16959243Sobrien 17059243Sobrien#ifndef INBUFSIZE 17159243Sobrien# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 17259243Sobrien#endif /* INBUFSIZE */ 17359243Sobrien 17459243Sobrien 17559243Sobrien/* 17659243Sobrien * What our builtin echo looks like 17759243Sobrien */ 17859243Sobrien#define NONE_ECHO 0 17959243Sobrien#define BSD_ECHO 1 18059243Sobrien#define SYSV_ECHO 2 18159243Sobrien#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 18259243Sobrien 18359243Sobrien#ifndef ECHO_STYLE 18459243Sobrien# if SYSVREL > 0 18559243Sobrien# define ECHO_STYLE SYSV_ECHO 18659243Sobrien# else /* SYSVREL == 0 */ 18759243Sobrien# define ECHO_STYLE BSD_ECHO 18859243Sobrien# endif /* SYSVREL */ 18959243Sobrien#endif /* ECHO_STYLE */ 19059243Sobrien 19159243Sobrien/* 19259243Sobrien * The shell moves std in/out/diag and the old std input away from units 19359243Sobrien * 0, 1, and 2 so that it is easy to set up these standards for invoked 19459243Sobrien * commands. 19559243Sobrien */ 196145479Smp#define FSAFE 5 /* We keep the first 5 descriptors untouched */ 19759243Sobrien#define FSHTTY 15 /* /dev/tty when manip pgrps */ 19859243Sobrien#define FSHIN 16 /* Preferred desc for shell input */ 19959243Sobrien#define FSHOUT 17 /* ... shell output */ 20059243Sobrien#define FSHDIAG 18 /* ... shell diagnostics */ 20159243Sobrien#define FOLDSTD 19 /* ... old std input */ 20259243Sobrien 20359243Sobrien#ifdef PROF 20459243Sobrien#define xexit(n) done(n) 20559243Sobrien#endif 20659243Sobrien 20759243Sobrien#ifdef cray 20859243Sobrien# define word word_t /* sys/types.h defines word.. bad move! */ 20959243Sobrien#endif 21059243Sobrien 21159243Sobrien#include <sys/types.h> 21259243Sobrien 21359243Sobrien#ifdef cray 21459243Sobrien# undef word 21559243Sobrien#endif 21659243Sobrien 21759243Sobrien/* 21859243Sobrien * Path separator in environment variables 21959243Sobrien */ 22059243Sobrien#ifndef PATHSEP 22169408Sache# if defined(__EMX__) || defined(WINNT_NATIVE) 22259243Sobrien# define PATHSEP ';' 22359243Sobrien# else /* unix */ 22459243Sobrien# define PATHSEP ':' 22569408Sache# endif /* __EMX__ || WINNT_NATIVE */ 22659243Sobrien#endif /* !PATHSEP */ 22759243Sobrien 22883098Smp#if defined(__HP_CXD_SPP) && !defined(__hpux) 22959243Sobrien# include <sys/cnx_stat.h> 23059243Sobrien# define stat stat64 23159243Sobrien# define fstat fstat64 23259243Sobrien# define lstat lstat64 23383098Smp#endif /* __HP_CXD_SPP && !__hpux */ 23459243Sobrien 235232633Smp#ifdef HAVE_LONG_LONG 236232633Smptypedef long long tcsh_number_t; 237232633Smp#else 238232633Smptypedef long tcsh_number_t; 239232633Smp#endif 24059243Sobrien/* 24159243Sobrien * This macro compares the st_dev field of struct stat. On aix on ibmESA 24259243Sobrien * st_dev is a structure, so comparison does not work. 24359243Sobrien */ 24459243Sobrien#ifndef DEV_DEV_COMPARE 24559243Sobrien# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 24659243Sobrien#endif /* DEV_DEV_COMPARE */ 24759243Sobrien 24859243Sobrien#ifdef _SEQUENT_ 24959243Sobrien# include <sys/procstats.h> 25059243Sobrien#endif /* _SEQUENT_ */ 25169408Sache#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 25259243Sobrien# include <sys/times.h> 25369408Sache#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 25459243Sobrien 25559243Sobrien#ifdef NLS 25659243Sobrien# include <locale.h> 25759243Sobrien#endif /* NLS */ 25859243Sobrien 25969408Sache#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 26059243Sobrien# include <sys/param.h> 26169408Sache#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 26259243Sobrien#include <sys/stat.h> 26359243Sobrien 26459243Sobrien#if defined(BSDTIMES) || defined(BSDLIMIT) 26559243Sobrien# include <sys/time.h> 26669408Sache# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 26759243Sobrien# include "/usr/ucbinclude/sys/resource.h" 26859243Sobrien# else 26959243Sobrien# ifdef convex 27059243Sobrien# define sysrusage cvxrusage 27159243Sobrien# include <sys/sysinfo.h> 27259243Sobrien# else 27359243Sobrien# define sysrusage rusage 27459243Sobrien# include <sys/resource.h> 27559243Sobrien# endif /* convex */ 27659243Sobrien# endif /* SYSVREL>3 */ 27759243Sobrien#endif /* BSDTIMES */ 27859243Sobrien 27969408Sache#ifndef WINNT_NATIVE 28059243Sobrien# ifndef POSIX 28159243Sobrien# ifdef TERMIO 28259243Sobrien# include <termio.h> 28359243Sobrien# else /* SGTTY */ 28459243Sobrien# include <sgtty.h> 28559243Sobrien# endif /* TERMIO */ 28659243Sobrien# else /* POSIX */ 28759243Sobrien# ifndef _UWIN 28859243Sobrien# include <termios.h> 28959243Sobrien# else 29059243Sobrien# include <termio.h> 29159243Sobrien# endif /* _UWIN */ 292232633Smp# if SYSVREL > 3 || defined(__linux__) 29359243Sobrien# undef TIOCGLTC /* we don't need those, since POSIX has them */ 29459243Sobrien# undef TIOCSLTC 29559243Sobrien# undef CSWTCH 29659243Sobrien# define CSWTCH _POSIX_VDISABLE /* So job control works */ 29759243Sobrien# endif /* SYSVREL > 3 */ 29859243Sobrien# endif /* POSIX */ 29969408Sache#endif /* WINNT_NATIVE */ 30059243Sobrien 30159243Sobrien#ifdef sonyrisc 30259243Sobrien# include <sys/ttold.h> 30359243Sobrien#endif /* sonyrisc */ 30459243Sobrien 30569408Sache#if defined(POSIX) && !defined(WINNT_NATIVE) 30659243Sobrien# include <unistd.h> 30759243Sobrien 30859243Sobrien/* 30959243Sobrien * the gcc+protoize version of <stdlib.h> 31059243Sobrien * redefines malloc(), so we define the following 31159243Sobrien * to avoid it. 31259243Sobrien */ 313232633Smp# if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) 31459243Sobrien# define NO_FIX_MALLOC 31559243Sobrien# include <stdlib.h> 316145479Smp# else /* glibc */ 31759243Sobrien# define _GNU_STDLIB_H 31859243Sobrien# define malloc __malloc 31959243Sobrien# define free __free 32059243Sobrien# define calloc __calloc 32159243Sobrien# define realloc __realloc 32259243Sobrien# include <stdlib.h> 32359243Sobrien# undef malloc 32459243Sobrien# undef free 32559243Sobrien# undef calloc 32659243Sobrien# undef realloc 327145479Smp# endif /* glibc || sgi */ 32869408Sache#endif /* POSIX && !WINNT_NATIVE */ 329167465Smp#include <limits.h> 33059243Sobrien 331232633Smp#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) 33259243Sobrien# if !defined(pyr) && !defined(stellar) 33359243Sobrien# include <time.h> 33459243Sobrien# ifdef _MINIX 33559243Sobrien# define HZ CLOCKS_PER_SEC 33659243Sobrien# endif /* _MINIX */ 33759243Sobrien# endif /* !pyr && !stellar */ 33859243Sobrien#endif /* SYSVREL > 0 || _IBMR2 */ 33959243Sobrien 34059243Sobrien/* In the following ifdef the DECOSF1 has been commented so that later 34159243Sobrien * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 34259243Sobrien */ 34359243Sobrien#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 344167465Smp# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 34559243Sobrien# include <sys/ioctl.h> 346232633Smp# if SYSVREL > 3 || defined(__linux__) 347232633Smp# undef TIOCGLTC /* we don't need those, since POSIX has them */ 348232633Smp# undef TIOCSLTC 349232633Smp# undef CSWTCH 350232633Smp# define CSWTCH _POSIX_VDISABLE /* So job control works */ 351232633Smp# endif /* SYSVREL > 3 */ 35259243Sobrien# endif 35359243Sobrien#endif 35459243Sobrien 35559243Sobrien#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 35659243Sobrien#undef CSWTCH 35759243Sobrien#define CSWTCH _POSIX_VDISABLE 35859243Sobrien#endif 35959243Sobrien 36069408Sache#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 36159243Sobrien# include <sys/filio.h> 36259243Sobrien#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 36359243Sobrien 364167465Smp#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 36559243Sobrien# include <sys/file.h> 366167465Smp#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 36759243Sobrien 36859243Sobrien#if !defined(O_RDONLY) || !defined(O_NDELAY) 36959243Sobrien# include <fcntl.h> 37059243Sobrien#endif 37159243Sobrien 37259243Sobrien#include <errno.h> 37359243Sobrien 37459243Sobrien#include <setjmp.h> 37559243Sobrien 376167465Smp#include <stdarg.h> 37759243Sobrien 378145479Smp#ifdef HAVE_DIRENT_H 37959243Sobrien# include <dirent.h> 38059243Sobrien#else 381145479Smp# ifdef HAVE_NDIR_H 38259243Sobrien# include <ndir.h> 38359243Sobrien# else 38459243Sobrien# include <sys/dir.h> 38559243Sobrien# endif 38659243Sobrien# define dirent direct 387145479Smp#endif /* HAVE_DIRENT_H */ 388145479Smp#ifndef HAVE_STRUCT_DIRENT_D_INO 389145479Smp# define d_ino d_fileno 390145479Smp#endif 391167465Smp#if defined(hpux) || defined(sgi) || defined(OREO) 39259243Sobrien# include <stdio.h> /* So the fgetpwent() prototypes work */ 393167465Smp#endif /* hpux || sgi || OREO */ 39469408Sache#ifndef WINNT_NATIVE 39559243Sobrien#include <pwd.h> 39659243Sobrien#include <grp.h> 39769408Sache#endif /* WINNT_NATIVE */ 398145479Smp#ifdef HAVE_SHADOW_H 39959243Sobrien# include <shadow.h> 400145479Smp#endif /* HAVE_SHADOW_H */ 401145479Smp#ifdef HAVE_AUTH_H 40259243Sobrien# include <auth.h> 403145479Smp#endif /* HAVE_AUTH_H */ 40459243Sobrien#if defined(BSD) && !defined(POSIX) 40559243Sobrien# include <strings.h> 40659243Sobrien# define strchr(a, b) index(a, b) 40759243Sobrien# define strrchr(a, b) rindex(a, b) 40859243Sobrien#else 40959243Sobrien# include <string.h> 41059243Sobrien#endif /* BSD */ 41159243Sobrien 41259243Sobrien/* 41359243Sobrien * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 41459243Sobrien * include it yet, so we include it here 41559243Sobrien */ 41659243Sobrien#if defined(sgi) && SYSVREL > 3 41759243Sobrien# include <sys/cdefs.h> 41859243Sobrien#endif /* sgi && SYSVREL > 3 */ 41959243Sobrien 42059243Sobrien#ifdef REMOTEHOST 42159243Sobrien# ifdef ISC 42259243Sobrien# undef MAXHOSTNAMELEN /* Busted headers? */ 42359243Sobrien# endif 42459243Sobrien 42559243Sobrien# include <netinet/in.h> 42659243Sobrien# include <arpa/inet.h> 42759243Sobrien# include <sys/socket.h> 428145479Smp# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) 429100616Smp# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 430100616Smp# if !defined(sgi) 431167465Smp# if !defined(__CYGWIN__) 432167465Smp# define INET6 433167465Smp# endif /* __CYGWIN__ */ 434100616Smp# endif /* sgi */ 435100616Smp# endif /* __APPLE__ */ 43669408Sache# endif 43759243Sobrien# include <sys/uio.h> /* For struct iovec */ 43859243Sobrien#endif /* REMOTEHOST */ 43959243Sobrien 44059243Sobrien#ifdef PURIFY 44159243Sobrien/* exit normally, allowing purify to trace leaks */ 44259243Sobrien# define _exit exit 44359243Sobrientypedef int pret_t; 44459243Sobrien#else /* !PURIFY */ 44559243Sobrien/* 44659243Sobrien * If your compiler complains, then you can either 44759243Sobrien * throw it away and get gcc or, use the following define 44859243Sobrien * and get rid of the typedef. 44959243Sobrien * [The 4.2/3BSD vax compiler does not like that] 45059243Sobrien * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 45159243Sobrien */ 45259243Sobrien# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 45359243Sobrien# define pret_t void 45459243Sobrien# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 45559243Sobrientypedef void pret_t; 45659243Sobrien# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 45759243Sobrien#endif /* PURIFY */ 45859243Sobrien 45969408Sache/* 46069408Sache * ASCII vs. EBCDIC 46169408Sache */ 46269408Sache#if 'Z' - 'A' == 25 46369408Sache# ifndef IS_ASCII 46469408Sache# define IS_ASCII 46569408Sache# endif 46669408Sache#endif 46769408Sache 46859243Sobrien#include "sh.types.h" 46959243Sobrien 470167465Smp#if !HAVE_DECL_GETPGRP 471145479Smp# ifndef GETPGRP_VOID 472167465Smpextern pid_t getpgrp (int); 473145479Smp# else 474167465Smpextern pid_t getpgrp (void); 475145479Smp# endif 476145479Smp#endif 47759243Sobrien 47859243Sobrien#ifndef lint 47959243Sobrientypedef ptr_t memalign_t; 48059243Sobrien#else 48159243Sobrientypedef union { 48259243Sobrien char am_char, *am_char_p; 48359243Sobrien short am_short, *am_short_p; 48459243Sobrien int am_int, *am_int_p; 48559243Sobrien long am_long, *am_long_p; 48659243Sobrien float am_float, *am_float_p; 48759243Sobrien double am_double, *am_double_p; 48859243Sobrien} *memalign_t; 48959243Sobrien 49059243Sobrien# define malloc lint_malloc 49159243Sobrien# define free lint_free 49259243Sobrien# define realloc lint_realloc 49359243Sobrien# define calloc lint_calloc 49459243Sobrien#endif 49559243Sobrien 496167465Smp#ifdef SYSMALLOC 497167465Smp# define xmalloc(i) smalloc(i) 498167465Smp# define xrealloc(p, i) srealloc(p, i) 499167465Smp# define xcalloc(n, s) scalloc(n, s) 500167465Smp# define xfree sfree 50159243Sobrien#else 502167465Smp# define xmalloc(i) malloc(i) 503167465Smp# define xrealloc(p, i) realloc(p, i) 504167465Smp# define xcalloc(n, s) calloc(n, s) 505167465Smp# define xfree free 506167465Smp#endif /* SYSMALLOC */ 50759243Sobrien#include "sh.char.h" 50859243Sobrien#include "sh.err.h" 50959243Sobrien#include "sh.dir.h" 51059243Sobrien#include "sh.proc.h" 51159243Sobrien 51259243Sobrien#include "pathnames.h" 51359243Sobrien 51459243Sobrien 51559243Sobrien/* 51659243Sobrien * C shell 51759243Sobrien * 51859243Sobrien * Bill Joy, UC Berkeley 51959243Sobrien * October, 1978; May 1980 52059243Sobrien * 52159243Sobrien * Jim Kulp, IIASA, Laxenburg Austria 52259243Sobrien * April, 1980 52359243Sobrien */ 52459243Sobrien 52559243Sobrien#ifdef HESIOD 52659243Sobrien# include <hesiod.h> 52759243Sobrien#endif /* HESIOD */ 52859243Sobrien 52959243Sobrien#ifdef REMOTEHOST 53059243Sobrien# include <netdb.h> 53159243Sobrien#endif /* REMOTEHOST */ 53259243Sobrien 53359243Sobrien#ifndef MAXHOSTNAMELEN 534167465Smp# ifdef HOST_NAME_MAX 535167465Smp# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) 536167465Smp# elif defined(SCO) && (SYSVREL > 3) 53759243Sobrien# include <sys/socket.h> 53859243Sobrien# else 53983098Smp# define MAXHOSTNAMELEN 256 54059243Sobrien# endif 54159243Sobrien#endif /* MAXHOSTNAMELEN */ 54259243Sobrien 54359243Sobrien 54459243Sobrien 54559243Sobrien#define eq(a, b) (Strcmp(a, b) == 0) 54659243Sobrien 54759243Sobrien/* globone() flags */ 54859243Sobrien#define G_ERROR 0 /* default action: error if multiple words */ 54959243Sobrien#define G_IGNORE 1 /* ignore the rest of the words */ 55059243Sobrien#define G_APPEND 2 /* make a sentence by cat'ing the words */ 55159243Sobrien 55259243Sobrien/* 55359243Sobrien * Global flags 55459243Sobrien */ 555145479SmpEXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ 55659243Sobrien 55759243Sobrien#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 55859243Sobrien# define CLOSE_ON_EXEC 55959243Sobrien#else 560145479SmpEXTERN int didcch IZERO; /* Have closed unused fd's for child */ 56159243Sobrien#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 56259243Sobrien 563145479SmpEXTERN int didfds IZERO; /* Have setup i/o fd's for child */ 564145479SmpEXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ 565145479SmpEXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ 566145479SmpEXTERN int child IZERO; /* Child shell ... errors cause exit */ 567145479SmpEXTERN int haderr IZERO; /* Reset was because of an error */ 568145479SmpEXTERN int intty IZERO; /* Input is a tty */ 569145479SmpEXTERN int intact IZERO; /* We are interactive... therefore prompt */ 570145479SmpEXTERN int justpr IZERO; /* Just print because of :p hist mod */ 571145479SmpEXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ 572145479SmpEXTERN int neednote IZERO; /* Need to pnotify() */ 573145479SmpEXTERN int noexec IZERO; /* Don't execute, just syntax check */ 574145479SmpEXTERN int pjobs IZERO; /* want to print jobs if interrupted */ 575145479SmpEXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 576232633SmpEXTERN int handle_intr IZERO;/* Are we currently handling an interrupt? */ 577145479SmpEXTERN int havhash IZERO; /* path hashing is available */ 578145479SmpEXTERN int editing IZERO; /* doing filename expansion and line editing */ 579145479SmpEXTERN int noediting IZERO; /* initial $term defaulted to noedit */ 580145479SmpEXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 581232633SmpEXTERN int anyerror IZERO; /* propagate errors from pipelines/backq */ 582195609SmpEXTERN int compat_expr IZERO;/* csh-style expressions? */ 583145479SmpEXTERN int isoutatty IZERO; /* is SHOUT a tty */ 584145479SmpEXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ 585145479SmpEXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 586145479SmpEXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 587145479SmpEXTERN int arun IZERO; /* Currently running multi-line-aliases */ 58859243SobrienEXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 589145479SmpEXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ 590167465Smp/* We received a window change event */ 591167465SmpEXTERN volatile sig_atomic_t windowchg IZERO; 592145479Smp#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) 593145479SmpEXTERN int dspmbyte_ls; 594145479Smp#endif 59559243Sobrien 59659243Sobrien/* 59759243Sobrien * Global i/o info 59859243Sobrien */ 59959243SobrienEXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 60059243SobrienEXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 60159243Sobrienextern Char *ffile; /* Name of shell file for $0 */ 602145479Smpextern int dolzero; /* if $?0 should return true... */ 60359243Sobrien 60459243Sobrienextern char *seterr; /* Error message from scanner/parser */ 605145479Smp#ifndef errno 60659243Sobrienextern int errno; /* Error from C library routines */ 60769408Sache#endif 60869408Sacheextern int exitset; 609167465Smp/* Temp name for << shell files in /tmp, for xfree() */ 610167465SmpEXTERN Char *shtemp IZERO; 61159243Sobrien 61259243Sobrien#ifdef BSDTIMES 61359243SobrienEXTERN struct timeval time0; /* Time at which the shell started */ 61459243SobrienEXTERN struct sysrusage ru0; 61559243Sobrien#else 61659243Sobrien# ifdef _SEQUENT_ 61759243SobrienEXTERN timeval_t time0; /* time at which shell started */ 61859243SobrienEXTERN struct process_stats ru0; 61959243Sobrien# else /* _SEQUENT_ */ 62059243Sobrien# ifndef POSIX 62159243SobrienEXTERN time_t time0; /* time at which shell started */ 62259243Sobrien# else /* POSIX */ 62359243SobrienEXTERN clock_t time0; /* time at which shell started */ 62459243SobrienEXTERN clock_t clk_tck; 62559243Sobrien# endif /* POSIX */ 62659243SobrienEXTERN struct tms shtimes; /* shell and child times for process timing */ 62759243Sobrien# endif /* _SEQUENT_ */ 628167465SmpEXTERN time_t seconds0; 62959243Sobrien#endif /* BSDTIMES */ 63059243Sobrien 63159243Sobrien#ifndef HZ 63259243Sobrien# define HZ 100 /* for division into seconds */ 63359243Sobrien#endif 63459243Sobrien 63559243Sobrien/* 63659243Sobrien * Miscellany 63759243Sobrien */ 63859243SobrienEXTERN Char *doldol; /* Character pid for $$ */ 639167465SmpEXTERN pid_t backpid; /* pid of the last background job */ 64059243Sobrien 64159243Sobrien/* 64259243Sobrien * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 64359243Sobrien * cause pid's could be unsigned and that would break our -1 flag, and 64459243Sobrien * uid_t and gid_t are not defined in all the systems so I would have to 64559243Sobrien * make special cases for them. In the future... 64659243Sobrien */ 647145479SmpEXTERN uid_t uid, euid; /* Invokers real and effective */ 648145479SmpEXTERN gid_t gid, egid; /* User and group ids */ 649145479SmpEXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ 65059243Sobrien shpgrp, /* Pgrp of shell */ 65159243Sobrien tpgrp; /* Terminal process group */ 65259243Sobrien /* If tpgrp is -1, leave tty alone! */ 65359243Sobrien 654167465SmpEXTERN Char *Prompt; /* The actual printed prompt or NULL */ 655167465SmpEXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ 65659243Sobrien 65759243Sobrien/* 65859243Sobrien * To be able to redirect i/o for builtins easily, the shell moves the i/o 65959243Sobrien * descriptors it uses away from 0,1,2. 66059243Sobrien * Ideally these should be in units which are closed across exec's 66159243Sobrien * (this saves work) but for version 6, this is not usually possible. 66259243Sobrien * The desired initial values for these descriptors are defined in 66359243Sobrien * sh.local.h. 66459243Sobrien */ 66559243SobrienEXTERN int SHIN IZERO; /* Current shell input (script) */ 66659243SobrienEXTERN int SHOUT IZERO; /* Shell output */ 66759243SobrienEXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 66859243SobrienEXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 66959243Sobrien 67059243Sobrien 671232633Smp#if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__) 67259243Sobrien/* 67359243Sobrien * From: fadden@uts.amdahl.com (Andy McFadden) 67459243Sobrien * we need sigsetjmp for UTS4, but not UTS2.1 67559243Sobrien */ 67659243Sobrien# define SIGSETJMP 67759243Sobrien#endif 67859243Sobrien 67959243Sobrien/* 68059243Sobrien * Error control 68159243Sobrien * 68259243Sobrien * Errors in scanning and parsing set up an error message to be printed 68359243Sobrien * at the end and complete. Other errors always cause a reset. 68459243Sobrien * Because of source commands and .cshrc we need nested error catches. 68559243Sobrien */ 68659243Sobrien 687167465Smp#ifdef SIGSETJMP 688167465Smp typedef struct { sigjmp_buf j; } jmp_buf_t; 689232633Smp# define setexit() sigsetjmp(reslab.j, 1) 690167465Smp# define _reset() siglongjmp(reslab.j, 1) 69159243Sobrien#else 69259243Sobrien typedef struct { jmp_buf j; } jmp_buf_t; 693167465Smp# define setexit() setjmp(reslab.j) 694167465Smp# define _reset() longjmp(reslab.j, 1) 695167465Smp#endif 69659243Sobrien 697167465Smp#define getexit(a) (void) ((a) = reslab) 698167465Smp#define resexit(a) (void) (reslab = (a)) 69959243Sobrien 700167465Smp#define cpybin(a, b) (void) ((a) = (b)) 70159243Sobrien 70259243Sobrienextern jmp_buf_t reslab; 70359243Sobrien 70459243SobrienEXTERN Char *gointr; /* Label for an onintr transfer */ 70559243Sobrien 706167465Smpextern struct sigaction parintr; /* Parents interrupt catch */ 707167465Smpextern struct sigaction parterm; /* Parents terminate catch */ 70859243Sobrien 70959243Sobrien/* 71059243Sobrien * Lexical definitions. 71159243Sobrien * 71259243Sobrien * All lexical space is allocated dynamically. 71359243Sobrien * The eighth/sixteenth bit of characters is used to prevent recognition, 71459243Sobrien * and eventually stripped. 71559243Sobrien */ 71659243Sobrien#define META 0200 71759243Sobrien#define ASCII 0177 718145479Smp#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ 719145479Smp/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ 720145479Smp# define QUOTE 0x40000000 721145479Smp# define TRIM 0x3FFFFFFF /* Mask to strip quote bit */ 722195609Smp# define UNDER 0x08000000 /* Underline flag */ 723195609Smp# define BOLD 0x04000000 /* Bold flag */ 724195609Smp# define STANDOUT 0x02000000 /* Standout flag */ 725195609Smp# define LITERAL 0x01000000 /* Literal character flag */ 726195609Smp# define ATTRIBUTES 0x0F000000 /* The bits used for attributes */ 727195609Smp# define INVALID_BYTE 0x00800000 /* Invalid character on input */ 728195609Smp# ifdef SOLARIS2 729195609Smp# define CHAR 0x30FFFFFF /* Mask to mask out the character */ 730195609Smp# else 731195609Smp# define CHAR 0x00FFFFFF /* Mask to mask out the character */ 732195609Smp# endif 733145479Smp#elif defined (SHORT_STRINGS) 73459243Sobrien# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 735145479Smp# define TRIM 0073777 /* Mask to strip quote/lit bit */ 73659243Sobrien# define UNDER 0040000 /* Underline flag */ 73759243Sobrien# define BOLD 0020000 /* Bold flag */ 73859243Sobrien# define STANDOUT 0010000 /* Standout flag */ 73959243Sobrien# define LITERAL 0004000 /* Literal character flag */ 74059243Sobrien# define ATTRIBUTES 0074000 /* The bits used for attributes */ 741145479Smp# define INVALID_BYTE 0 74259243Sobrien# define CHAR 0000377 /* Mask to mask out the character */ 74359243Sobrien#else 74459243Sobrien# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 74559243Sobrien# define TRIM 0177 /* Mask to strip quote bit */ 74659243Sobrien# define UNDER 0000000 /* No extra bits to do both */ 74759243Sobrien# define BOLD 0000000 /* Bold flag */ 74859243Sobrien# define STANDOUT META /* Standout flag */ 74959243Sobrien# define LITERAL 0000000 /* Literal character flag */ 75059243Sobrien# define ATTRIBUTES 0200 /* The bits used for attributes */ 751145479Smp# define INVALID_BYTE 0 75259243Sobrien# define CHAR 0000177 /* Mask to mask out the character */ 753167465Smp#endif 754145479Smp#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) 75559243Sobrien 75659243SobrienEXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 75759243Sobrien 75859243Sobrien/* 75959243Sobrien * Each level of input has a buffered input structure. 76059243Sobrien * There are one or more blocks of buffered input for each level, 76159243Sobrien * exactly one if the input is seekable and tell is available. 76259243Sobrien * In other cases, the shell buffers enough blocks to keep all loops 76359243Sobrien * in the buffer. 764167465Smp * 765167465Smp * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but 766167465Smp * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for 767167465Smp * fbuf indexing). 768167465Smp * 769167465Smp * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there 770167465Smp * is no difference between byte and character offsets. 77159243Sobrien */ 77259243SobrienEXTERN struct Bin { 773145479Smp off_t Bfseekp; /* Seek pointer, generally != lseek() value */ 77459243Sobrien off_t Bfbobp; /* Seekp of beginning of buffers */ 77559243Sobrien off_t Bfeobp; /* Seekp of end of buffers */ 77659243Sobrien int Bfblocks; /* Number of buffer blocks */ 77759243Sobrien Char **Bfbuf; /* The array of buffer blocks */ 778145479Smp#ifdef WIDE_STRINGS 779145479Smp /* Number of bytes in each character if (cantell) */ 780145479Smp unsigned char Bfclens[BUFSIZE + 1]; 781145479Smp#endif 78259243Sobrien} B; 78359243Sobrien 78459243Sobrien/* 78559243Sobrien * This structure allows us to seek inside aliases 78659243Sobrien */ 78759243Sobrienstruct Ain { 78859243Sobrien int type; 78969408Sache#define TCSH_I_SEEK 0 /* Invalid seek */ 79069408Sache#define TCSH_A_SEEK 1 /* Alias seek */ 79169408Sache#define TCSH_F_SEEK 2 /* File seek */ 79269408Sache#define TCSH_E_SEEK 3 /* Eval seek */ 79359243Sobrien union { 794167465Smp off_t _f_seek; /* A byte offset if (cantell) */ 79559243Sobrien Char* _c_seek; 79659243Sobrien } fc; 79759243Sobrien#define f_seek fc._f_seek 79859243Sobrien#define c_seek fc._c_seek 79959243Sobrien Char **a_seek; 80059243Sobrien} ; 80159243Sobrien 80259243Sobrienextern int aret; /* Type of last char returned */ 80359243Sobrien#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 80459243Sobrien (a)->f_seek == (b)->f_seek && \ 80559243Sobrien (a)->a_seek == (b)->a_seek) 80659243Sobrien 80759243Sobrien#define fseekp B.Bfseekp 80859243Sobrien#define fbobp B.Bfbobp 80959243Sobrien#define feobp B.Bfeobp 81059243Sobrien#define fblocks B.Bfblocks 81159243Sobrien#define fbuf B.Bfbuf 812145479Smp#define fclens B.Bfclens 81359243Sobrien 81459243Sobrien/* 81559243Sobrien * The shell finds commands in loops by reseeking the input 81659243Sobrien * For whiles, in particular, it reseeks to the beginning of the 81759243Sobrien * line the while was on; hence the while placement restrictions. 81859243Sobrien */ 81959243SobrienEXTERN struct Ain lineloc; 82059243Sobrien 821145479SmpEXTERN int cantell; /* Is current source tellable ? */ 82259243Sobrien 82359243Sobrien/* 82459243Sobrien * Input lines are parsed into doubly linked circular 82559243Sobrien * lists of words of the following form. 82659243Sobrien */ 82759243Sobrienstruct wordent { 82859243Sobrien Char *word; 82959243Sobrien struct wordent *prev; 83059243Sobrien struct wordent *next; 83159243Sobrien}; 83259243Sobrien 83359243Sobrien/* 83459243Sobrien * During word building, both in the initial lexical phase and 83559243Sobrien * when expanding $ variable substitutions, expansion by `!' and `$' 83659243Sobrien * must be inhibited when reading ahead in routines which are themselves 83759243Sobrien * processing `!' and `$' expansion or after characters such as `\' or in 83859243Sobrien * quotations. The following flags are passed to the getC routines 83959243Sobrien * telling them which of these substitutions are appropriate for the 84059243Sobrien * next character to be returned. 84159243Sobrien */ 84259243Sobrien#define DODOL 1 84359243Sobrien#define DOEXCL 2 84459243Sobrien#define DOALL DODOL|DOEXCL 84559243Sobrien 84659243Sobrien/* 84759243Sobrien * Labuf implements a general buffer for lookahead during lexical operations. 84859243Sobrien * Text which is to be placed in the input stream can be stuck here. 84959243Sobrien * We stick parsed ahead $ constructs during initial input, 85059243Sobrien * process id's from `$$', and modified variable values (from qualifiers 85159243Sobrien * during expansion in sh.dol.c) here. 85259243Sobrien */ 853167465Smpextern struct Strbuf labuf; 854167465SmpEXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ 85559243Sobrien 85659243Sobrien/* 85759243Sobrien * Parser structure 85859243Sobrien * 85959243Sobrien * Each command is parsed to a tree of command structures and 86059243Sobrien * flags are set bottom up during this process, to be propagated down 86159243Sobrien * as needed during the semantics/exeuction pass (sh.sem.c). 86259243Sobrien */ 86359243Sobrienstruct command { 86459243Sobrien unsigned char t_dtyp; /* Type of node */ 86559243Sobrien#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 86659243Sobrien#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 86759243Sobrien#define NODE_PIPE 3 /* t_dlef | t_drit */ 86859243Sobrien#define NODE_LIST 4 /* t_dlef ; t_drit */ 86959243Sobrien#define NODE_OR 5 /* t_dlef || t_drit */ 87059243Sobrien#define NODE_AND 6 /* t_dlef && t_drit */ 87159243Sobrien unsigned char t_nice; /* Nice value */ 87259243Sobrien#ifdef apollo 87359243Sobrien unsigned char t_systype; /* System environment */ 87459243Sobrien#endif 87559243Sobrien unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 87659243Sobrien/* save these when re-doing */ 87759243Sobrien#ifndef apollo 87859243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 87959243Sobrien#else 88059243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 88159243Sobrien#endif 88259243Sobrien#define F_AMPERSAND (1<<0) /* executes in background */ 88359243Sobrien#define F_APPEND (1<<1) /* output is redirected >> */ 88459243Sobrien#define F_PIPEIN (1<<2) /* input is a pipe */ 88559243Sobrien#define F_PIPEOUT (1<<3) /* output is a pipe */ 88659243Sobrien#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 88759243Sobrien#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 88859243Sobrien/* spare */ 88959243Sobrien#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 89059243Sobrien#define F_OVERWRITE (1<<8) /* output was ! */ 89159243Sobrien#define F_READ (1<<9) /* input redirection is << */ 89259243Sobrien#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 89359243Sobrien#define F_NICE (1<<11) /* t_nice is meaningful */ 89459243Sobrien#define F_NOHUP (1<<12) /* nohup this command */ 89559243Sobrien#define F_TIME (1<<13) /* time this command */ 89659243Sobrien#define F_BACKQ (1<<14) /* command is in `` */ 89759243Sobrien#define F_HUP (1<<15) /* hup this command */ 89859243Sobrien#ifdef apollo 89959243Sobrien#define F_VER (1<<16) /* execute command under SYSTYPE */ 90059243Sobrien#endif 90159243Sobrien union { 90259243Sobrien Char *T_dlef; /* Input redirect word */ 90359243Sobrien struct command *T_dcar; /* Left part of list/pipe */ 90459243Sobrien } L; 90559243Sobrien union { 90659243Sobrien Char *T_drit; /* Output redirect word */ 90759243Sobrien struct command *T_dcdr; /* Right part of list/pipe */ 90859243Sobrien } R; 90959243Sobrien#define t_dlef L.T_dlef 91059243Sobrien#define t_dcar L.T_dcar 91159243Sobrien#define t_drit R.T_drit 91259243Sobrien#define t_dcdr R.T_dcdr 91359243Sobrien Char **t_dcom; /* Command/argument vector */ 91459243Sobrien struct command *t_dspr; /* Pointer to ()'d subtree */ 91559243Sobrien}; 91659243Sobrien 91759243Sobrien 91859243Sobrien/* 91959243Sobrien * The keywords for the parser 92059243Sobrien */ 92159243Sobrien#define TC_BREAK 0 92259243Sobrien#define TC_BRKSW 1 92359243Sobrien#define TC_CASE 2 92459243Sobrien#define TC_DEFAULT 3 92559243Sobrien#define TC_ELSE 4 92659243Sobrien#define TC_END 5 92759243Sobrien#define TC_ENDIF 6 92859243Sobrien#define TC_ENDSW 7 92959243Sobrien#define TC_EXIT 8 93059243Sobrien#define TC_FOREACH 9 93159243Sobrien#define TC_GOTO 10 93259243Sobrien#define TC_IF 11 93359243Sobrien#define TC_LABEL 12 93459243Sobrien#define TC_LET 13 93559243Sobrien#define TC_SET 14 93659243Sobrien#define TC_SWITCH 15 93759243Sobrien#define TC_TEST 16 93859243Sobrien#define TC_THEN 17 93959243Sobrien#define TC_WHILE 18 94059243Sobrien 94159243Sobrien/* 94259243Sobrien * These are declared here because they want to be 94359243Sobrien * initialized in sh.init.c (to allow them to be made readonly) 94459243Sobrien */ 94559243Sobrien 94659243Sobrien#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 94759243Sobrien /* Avoid hpux ansi mode spurious warnings */ 94859243Sobrientypedef void (*bfunc_t) (); 94959243Sobrien#else 950167465Smptypedef void (*bfunc_t) (Char **, struct command *); 95159243Sobrien#endif /* hpux && __STDC__ && !__GNUC__ */ 95259243Sobrien 953167465Smpextern const struct biltins { 954145479Smp const char *bname; 95559243Sobrien bfunc_t bfunct; 95659243Sobrien int minargs, maxargs; 95759243Sobrien} bfunc[]; 95859243Sobrienextern int nbfunc; 95969408Sache#ifdef WINNT_NATIVE 96059243Sobrienextern struct biltins nt_bfunc[]; 96159243Sobrienextern int nt_nbfunc; 96269408Sache#endif /* WINNT_NATIVE*/ 963145479Smpextern int bequiet; 96459243Sobrien 96559243Sobrienextern struct srch { 966145479Smp const char *s_name; 967145479Smp int s_value; 968145479Smp} srchn[]; 96959243Sobrienextern int nsrchn; 97059243Sobrien 97159243Sobrien/* 97259243Sobrien * Structure defining the existing while/foreach loops at this 97359243Sobrien * source level. Loops are implemented by seeking back in the 97459243Sobrien * input. For foreach (fe), the word list is attached here. 97559243Sobrien */ 97659243SobrienEXTERN struct whyle { 97759243Sobrien struct Ain w_start; /* Point to restart loop */ 97859243Sobrien struct Ain w_end; /* End of loop (0 if unknown) */ 97959243Sobrien Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 98059243Sobrien Char *w_fename; /* Name for fe */ 98159243Sobrien struct whyle *w_next; /* Next (more outer) loop */ 98259243Sobrien} *whyles; 98359243Sobrien 98459243Sobrien/* 98559243Sobrien * Variable structure 98659243Sobrien * 98759243Sobrien * Aliases and variables are stored in AVL balanced binary trees. 98859243Sobrien */ 98959243SobrienEXTERN struct varent { 99059243Sobrien Char **vec; /* Array of words which is the value */ 99159243Sobrien Char *v_name; /* Name of variable/alias */ 99259243Sobrien int v_flags; /* Flags */ 99359243Sobrien#define VAR_ALL -1 99459243Sobrien#define VAR_READONLY 1 99559243Sobrien#define VAR_READWRITE 2 99659243Sobrien#define VAR_NOGLOB 4 99759243Sobrien#define VAR_FIRST 32 99859243Sobrien#define VAR_LAST 64 99959243Sobrien struct varent *v_link[3]; /* The links, see below */ 100059243Sobrien int v_bal; /* Balance factor */ 100159243Sobrien} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 100259243Sobrien 100359243Sobrien#define v_left v_link[0] 100459243Sobrien#define v_right v_link[1] 100559243Sobrien#define v_parent v_link[2] 100659243Sobrien 100759243Sobrien#define adrof(v) adrof1(v, &shvhed) 100859243Sobrien#define varval(v) value1(v, &shvhed) 100959243Sobrien 101059243Sobrien/* 101159243Sobrien * The following are for interfacing redo substitution in 101259243Sobrien * aliases to the lexical routines. 101359243Sobrien */ 101459243SobrienEXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 101559243SobrienEXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 101659243SobrienEXTERN Char **alvec IZERO_STRUCT, 101759243Sobrien *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 101859243Sobrien 101959243Sobrien/* 102059243Sobrien * Filename/command name expansion variables 102159243Sobrien */ 102259243Sobrien 1023131962Smp#ifdef __CYGWIN__ 1024131962Smp# undef MAXPATHLEN 1025131962Smp#endif /* __CYGWIN__ */ 1026131962Smp 102759243Sobrien#ifndef MAXPATHLEN 1028167465Smp# ifdef PATH_MAX 1029167465Smp# define MAXPATHLEN PATH_MAX 1030167465Smp# else 1031167465Smp# define MAXPATHLEN 2048 1032167465Smp# endif 103359243Sobrien#endif /* MAXPATHLEN */ 103459243Sobrien 103559243Sobrien#ifndef HAVENOLIMIT 103659243Sobrien/* 103759243Sobrien * resource limits 103859243Sobrien */ 103959243Sobrienextern struct limits { 1040145479Smp int limconst; 1041145479Smp const char *limname; 1042145479Smp int limdiv; 1043145479Smp const char *limscale; 104459243Sobrien} limits[]; 104559243Sobrien#endif /* !HAVENOLIMIT */ 104659243Sobrien 104759243Sobrien/* 104859243Sobrien * History list 104959243Sobrien * 105059243Sobrien * Each history list entry contains an embedded wordlist 105159243Sobrien * from the scanner, a number for the event, and a reference count 105259243Sobrien * to aid in discarding old entries. 105359243Sobrien * 105459243Sobrien * Essentially "invisible" entries are put on the history list 105559243Sobrien * when history substitution includes modifiers, and thrown away 105659243Sobrien * at the next discarding since their event numbers are very negative. 105759243Sobrien */ 105859243SobrienEXTERN struct Hist { 105959243Sobrien struct wordent Hlex; 1060232633Smp int Hnum; /* eventno when inserted into history list */ 106159243Sobrien int Href; 106259243Sobrien time_t Htime; 106359243Sobrien Char *histline; 1064232633Smp struct Hist *Hnext, *Hprev; /* doubly linked list */ 1065232633Smp unsigned Hhash; /* hash value of command line */ 106659243Sobrien} Histlist IZERO_STRUCT; 106759243Sobrien 106859243SobrienEXTERN struct wordent paraml; /* Current lexical word list */ 106959243SobrienEXTERN int eventno; /* Next events number */ 107059243SobrienEXTERN int lastev; /* Last event reference (default) */ 107159243Sobrien 107259243SobrienEXTERN Char HIST; /* history invocation character */ 107359243SobrienEXTERN Char HISTSUB; /* auto-substitute character */ 107459243SobrienEXTERN Char PRCH; /* Prompt symbol for regular users */ 107559243SobrienEXTERN Char PRCHROOT; /* Prompt symbol for root */ 107659243Sobrien 107759243Sobrien/* 107859243Sobrien * For operating systems with single case filenames (OS/2) 107959243Sobrien */ 108059243Sobrien#ifdef CASE_INSENSITIVE 1081145479Smp# ifdef WIDE_STRINGS 1082145479Smp# define samecase(x) (towlower(x)) 1083145479Smp# else 1084145479Smp# define samecase(x) (isupper((unsigned char)(x)) ? \ 1085145479Smp tolower((unsigned char)(x)) : (x)) 1086145479Smp# endif 108759243Sobrien#else 108859243Sobrien# define samecase(x) (x) 108959243Sobrien#endif /* CASE_INSENSITIVE */ 109059243Sobrien 109159243Sobrien/* 109259243Sobrien * strings.h: 109359243Sobrien */ 109459243Sobrien#ifndef SHORT_STRINGS 109559243Sobrien#define Strchr(a, b) strchr(a, b) 109659243Sobrien#define Strrchr(a, b) strrchr(a, b) 109759243Sobrien#define Strcat(a, b) strcat(a, b) 109859243Sobrien#define Strncat(a, b, c) strncat(a, b, c) 109959243Sobrien#define Strcpy(a, b) strcpy(a, b) 110059243Sobrien#define Strncpy(a, b, c) strncpy(a, b, c) 110159243Sobrien#define Strlen(a) strlen(a) 110259243Sobrien#define Strcmp(a, b) strcmp(a, b) 110359243Sobrien#define Strncmp(a, b, c) strncmp(a, b, c) 1104131962Smp#define Strcasecmp(a, b) strcasecmp(a, b) 110559243Sobrien 110659243Sobrien#define Strspl(a, b) strspl(a, b) 1107167465Smp#define Strnsave(a, b) strnsave(a, b) 110859243Sobrien#define Strsave(a) strsave(a) 110959243Sobrien#define Strend(a) strend(a) 111059243Sobrien#define Strstr(a, b) strstr(a, b) 111159243Sobrien 111259243Sobrien#define str2short(a) (a) 111359243Sobrien#define blk2short(a) saveblk(a) 111459243Sobrien#define short2blk(a) saveblk(a) 1115167465Smp#define short2str(a) caching_strip(a) 111659243Sobrien#else 1117232633Smp#if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS) 1118145479Smp#define Strchr(a, b) wcschr(a, b) 1119145479Smp#define Strrchr(a, b) wcsrchr(a, b) 1120145479Smp#define Strcat(a, b) wcscat(a, b) 1121145479Smp#define Strncat(a, b, c) wcsncat(a, b, c) 1122145479Smp#define Strcpy(a, b) wcscpy(a, b) 1123145479Smp#define Strncpy(a, b, c) wcsncpy(a, b, c) 1124145479Smp#define Strlen(a) wcslen(a) 1125145479Smp#define Strcmp(a, b) wcscmp(a, b) 1126145479Smp#define Strncmp(a, b, c) wcsncmp(a, b, c) 1127145479Smp#else 112859243Sobrien#define Strchr(a, b) s_strchr(a, b) 112959243Sobrien#define Strrchr(a, b) s_strrchr(a, b) 113059243Sobrien#define Strcat(a, b) s_strcat(a, b) 113159243Sobrien#define Strncat(a, b, c) s_strncat(a, b, c) 113259243Sobrien#define Strcpy(a, b) s_strcpy(a, b) 113359243Sobrien#define Strncpy(a, b, c) s_strncpy(a, b, c) 113459243Sobrien#define Strlen(a) s_strlen(a) 113559243Sobrien#define Strcmp(a, b) s_strcmp(a, b) 113659243Sobrien#define Strncmp(a, b, c) s_strncmp(a, b, c) 1137145479Smp#endif 1138131962Smp#define Strcasecmp(a, b) s_strcasecmp(a, b) 113959243Sobrien 114059243Sobrien#define Strspl(a, b) s_strspl(a, b) 1141167465Smp#define Strnsave(a, b) s_strnsave(a, b) 114259243Sobrien#define Strsave(a) s_strsave(a) 114359243Sobrien#define Strend(a) s_strend(a) 114459243Sobrien#define Strstr(a, b) s_strstr(a, b) 114559243Sobrien#endif 114659243Sobrien 114759243Sobrien/* 114859243Sobrien * setname is a macro to save space (see sh.err.c) 114959243Sobrien */ 1150145479SmpEXTERN const char *bname; 115159243Sobrien 115259243Sobrien#define setname(a) (bname = (a)) 115359243Sobrien 115459243Sobrien#ifdef VFORK 115559243SobrienEXTERN Char *Vsav; 115659243SobrienEXTERN Char *Vdp; 115759243SobrienEXTERN Char *Vexpath; 115859243SobrienEXTERN char **Vt; 115959243Sobrien#endif /* VFORK */ 116059243Sobrien 116159243SobrienEXTERN Char **evalvec; 116259243SobrienEXTERN Char *evalp; 116359243Sobrien 116459243Sobrienextern struct mesg { 1165145479Smp const char *iname; /* name from /usr/include */ 1166145479Smp const char *pname; /* print name */ 1167145479Smp} mesg[]; 116859243Sobrien 116959243Sobrien/* word_chars is set by default to WORD_CHARS but can be overridden by 117059243Sobrien the worchars variable--if unset, reverts to WORD_CHARS */ 117159243Sobrien 117259243SobrienEXTERN Char *word_chars; 117359243Sobrien 117459243Sobrien#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 117559243Sobrien 117659243SobrienEXTERN Char *STR_SHELLPATH; 117759243Sobrien 117859243Sobrien#ifdef _PATH_BSHELL 117959243SobrienEXTERN Char *STR_BSHELL; 118059243Sobrien#endif 118159243SobrienEXTERN Char *STR_WORD_CHARS; 118259243SobrienEXTERN Char **STR_environ IZERO; 118359243Sobrien 118459243Sobrienextern int dont_free; /* Tell free that we are in danger if we free */ 118559243Sobrien 118659243Sobrienextern Char *INVPTR; 118759243Sobrienextern Char **INVPPTR; 118859243Sobrien 118959243Sobrienextern char *progname; 119059243Sobrienextern int tcsh; 1191145479Smpextern int xlate_cr; 1192145479Smpextern int output_raw; 1193145479Smpextern int lbuffed; 1194145479Smpextern time_t Htime; 1195145479Smpextern int numeof; 1196145479Smpextern int insource; 1197145479Smpextern char linbuf[]; 1198145479Smpextern char *linp; 1199145479Smpextern int nsig; 1200145479Smp#ifdef VFORK 1201145479Smpextern int use_fork; 1202145479Smp#endif 1203145479Smpextern int tellwhat; 1204145479Smpextern int NoNLSRebind; 1205167465Smp#if !HAVE_DECL_ENVIRON 1206167465Smpextern char **environ; 1207167465Smp#endif 120859243Sobrien 120959243Sobrien#include "tc.h" 121059243Sobrien 121169408Sache#ifndef WINNT_NATIVE 121259243Sobrien# ifdef NLS_CATALOGS 1213232633Smp# ifdef HAVE_FEATURES_H 121459243Sobrien# include <features.h> 121559243Sobrien# endif 1216232633Smp# ifdef HAVE_NL_LANGINFO 1217232633Smp# include <langinfo.h> 121859243Sobrien# endif 1219232633Smp# ifdef __uxps__ 1220232633Smp# define gettxt gettxt_ds 122159243Sobrien# endif 1222232633Smp# include <nl_types.h> 1223232633Smp# ifdef __uxps__ 1224232633Smp# undef gettxt 1225232633Smp# endif 122659243SobrienEXTERN nl_catd catd; 1227167465Smp# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) 1228145479Smp# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) 1229145479Smp# else 1230167465Smp# define CGETS(b, c, d) xcatgets(catd, b, c, d) 1231145479Smp# endif 123259243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 123359243Sobrien# else 123459243Sobrien# define CGETS(b, c, d) d 123559243Sobrien# define CSAVS(b, c, d) d 123659243Sobrien# endif 123769408Sache#else /* WINNT_NATIVE */ 123859243Sobrien# define CGETS(b, c, d) nt_cgets( b, c, d) 123959243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 124069408Sache#endif /* WINNT_NATIVE */ 124159243Sobrien 1242131962Smp#if defined(FILEC) 1243145479Smpextern int filec; 1244131962Smp#endif /* FILEC */ 1245131962Smp 1246145479Smp#include "sh.decls.h" 124759243Sobrien/* 124859243Sobrien * Since on some machines characters are unsigned, and the signed 124959243Sobrien * keyword is not universally implemented, we treat all characters 125059243Sobrien * as unsigned and sign extend them where we need. 125159243Sobrien */ 125259243Sobrien#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 125359243Sobrien 1254145479Smp/* 1255145479Smp * explanation for use by the "--help" option 1256145479Smp */ 1257145479Smp#define HELP_STRING "\ 1258145479Smp-b file batch mode, read and execute commands from `file' \n\ 1259145479Smp-c command run `command' from next argument \n\ 1260145479Smp-d load directory stack from `~/.cshdirs' \n\ 1261145479Smp-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ 1262145479Smp-e exit on any error \n\ 1263145479Smp-f start faster by ignoring the start-up file \n\ 1264145479Smp-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ 1265145479Smp-i interactive, even when input is not from a terminal \n\ 1266145479Smp-l act as a login shell, must be the only option specified \n\ 1267145479Smp-m load the start-up file, whether or not owned by effective user \n\ 1268145479Smp-n file no execute mode, just check syntax of the following `file' \n\ 1269145479Smp-q accept SIGQUIT for running under a debugger \n\ 1270145479Smp-s read commands from standard input \n\ 1271145479Smp-t read one line from standard input \n\ 1272145479Smp-v echo commands after history substitution \n\ 1273145479Smp-V like -v but including commands read from the start-up file \n\ 1274145479Smp-x echo commands immediately before execution \n\ 1275145479Smp-X like -x but including commands read from the start-up file \n\ 1276145479Smp--help print this message and exit \n\ 1277145479Smp--version print the version shell variable and exit \n\ 1278145479Smp\nSee the tcsh(1) manual page for detailed information.\n" 1279145479Smp 1280145479Smp#include "tc.nls.h" 1281145479Smp 128259243Sobrien#endif /* _h_sh */ 1283