sh.h revision 83098
183098Smp/* $Header: /src/pub/tcsh/sh.h,v 3.96 2001/03/18 19:06:29 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. 1759243Sobrien * 3. All advertising materials mentioning features or use of this software 1859243Sobrien * must display the following acknowledgement: 1959243Sobrien * This product includes software developed by the University of 2059243Sobrien * California, Berkeley and its contributors. 2159243Sobrien * 4. Neither the name of the University nor the names of its contributors 2259243Sobrien * may be used to endorse or promote products derived from this software 2359243Sobrien * without specific prior written permission. 2459243Sobrien * 2559243Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2659243Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2759243Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2859243Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2959243Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3059243Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3159243Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3259243Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3359243Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3459243Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3559243Sobrien * SUCH DAMAGE. 3659243Sobrien */ 3759243Sobrien#ifndef _h_sh 3859243Sobrien#define _h_sh 3959243Sobrien 4059243Sobrien#include "config.h" 4159243Sobrien 4259243Sobrien#ifndef EXTERN 4359243Sobrien# define EXTERN extern 4459243Sobrien#else /* !EXTERN */ 4569408Sache# ifdef WINNT_NATIVE 4659243Sobrien# define IZERO = 0 4759243Sobrien# define IZERO_STRUCT = {0} 4869408Sache# endif /* WINNT_NATIVE */ 4959243Sobrien#endif /* EXTERN */ 5059243Sobrien 5159243Sobrien#ifndef IZERO 5259243Sobrien# define IZERO 5359243Sobrien#endif /* IZERO */ 5459243Sobrien#ifndef IZERO_STRUCT 5559243Sobrien# define IZERO_STRUCT 5659243Sobrien# endif /* IZERO_STRUCT */ 5759243Sobrien 5869408Sache#ifndef WINNT_NATIVE 5959243Sobrien# define INIT_ZERO 6059243Sobrien# define INIT_ZERO_STRUCT 6159243Sobrien# define force_read read 6269408Sache#endif /*!WINNT_NATIVE */ 6359243Sobrien/* 6459243Sobrien * Sanity 6559243Sobrien */ 6659243Sobrien#if defined(_POSIX_SOURCE) && !defined(POSIX) 6759243Sobrien# define POSIX 6859243Sobrien#endif 6959243Sobrien 7059243Sobrien#if defined(POSIXJOBS) && !defined(BSDJOBS) 7159243Sobrien# define BSDJOBS 7259243Sobrien#endif 7359243Sobrien 7459243Sobrien#if defined(POSIXSIGS) && !defined(BSDSIGS) 7559243Sobrien# define BSDSIGS 7659243Sobrien#endif 7759243Sobrien 7859243Sobrien#ifdef SHORT_STRINGS 7959243Sobrientypedef short Char; 8059243Sobrientypedef unsigned short uChar; 8159243Sobrien# define SAVE(a) (Strsave(str2short(a))) 8259243Sobrien#else 8359243Sobrientypedef char Char; 8459243Sobrientypedef unsigned char uChar; 8559243Sobrien# define SAVE(a) (strsave(a)) 8659243Sobrien#endif 8759243Sobrien 8859243Sobrien/* Elide unused argument warnings */ 8959243Sobrien#define USE(a) (void) (a) 9059243Sobrien/* 9159243Sobrien * If your compiler complains, then you can either 9259243Sobrien * throw it away and get gcc or, use the following define 9359243Sobrien * and get rid of the typedef. 9459243Sobrien * [The 4.2/3BSD vax compiler does not like that] 9559243Sobrien * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 9659243Sobrien */ 9759243Sobrien#ifdef SIGVOID 9859243Sobrien# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 9959243Sobrien# define sigret_t void 10059243Sobrien# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 10159243Sobrientypedef void sigret_t; 10259243Sobrien# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 10359243Sobrien#else /* !SIGVOID */ 10459243Sobrientypedef int sigret_t; 10559243Sobrien#endif /* SIGVOID */ 10659243Sobrien 10759243Sobrien/* 10859243Sobrien * Return true if the path is absolute 10959243Sobrien */ 11069408Sache#ifndef WINNT_NATIVE 11159243Sobrien# define ABSOLUTEP(p) (*(p) == '/') 11269408Sache#else /* WINNT_NATIVE */ 11359243Sobrien# define ABSOLUTEP(p) ((p)[0] == '/' || \ 11459243Sobrien (Isalpha((p)[0]) && (p)[1] == ':' && (p)[2] == '/')) 11569408Sache#endif /* WINNT_NATIVE */ 11659243Sobrien 11759243Sobrien/* 11859243Sobrien * Fundamental definitions which may vary from system to system. 11959243Sobrien * 12059243Sobrien * BUFSIZE The i/o buffering size; also limits word size 12159243Sobrien * MAILINTVL How often to mailcheck; more often is more expensive 12259243Sobrien */ 12359243Sobrien#ifdef BUFSIZE 12461524Sobrien# if BUFSIZE < 4096 12559243Sobrien# undef BUFSIZE 12661524Sobrien# define BUFSIZE 4096 /* buffer size should be no less than this */ 12759243Sobrien# endif 12859243Sobrien#else 12961524Sobrien# define BUFSIZE 4096 13059243Sobrien#endif /* BUFSIZE */ 13159243Sobrien 13259243Sobrien#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 13359243Sobrien#define MAILINTVL 600 /* 10 minutes */ 13459243Sobrien 13559243Sobrien#ifndef INBUFSIZE 13659243Sobrien# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 13759243Sobrien#endif /* INBUFSIZE */ 13859243Sobrien 13959243Sobrien 14059243Sobrien/* 14159243Sobrien * What our builtin echo looks like 14259243Sobrien */ 14359243Sobrien#define NONE_ECHO 0 14459243Sobrien#define BSD_ECHO 1 14559243Sobrien#define SYSV_ECHO 2 14659243Sobrien#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 14759243Sobrien 14859243Sobrien#ifndef ECHO_STYLE 14959243Sobrien# if SYSVREL > 0 15059243Sobrien# define ECHO_STYLE SYSV_ECHO 15159243Sobrien# else /* SYSVREL == 0 */ 15259243Sobrien# define ECHO_STYLE BSD_ECHO 15359243Sobrien# endif /* SYSVREL */ 15459243Sobrien#endif /* ECHO_STYLE */ 15559243Sobrien 15659243Sobrien/* 15759243Sobrien * The shell moves std in/out/diag and the old std input away from units 15859243Sobrien * 0, 1, and 2 so that it is easy to set up these standards for invoked 15959243Sobrien * commands. 16059243Sobrien */ 16159243Sobrien#define FSHTTY 15 /* /dev/tty when manip pgrps */ 16259243Sobrien#define FSHIN 16 /* Preferred desc for shell input */ 16359243Sobrien#define FSHOUT 17 /* ... shell output */ 16459243Sobrien#define FSHDIAG 18 /* ... shell diagnostics */ 16559243Sobrien#define FOLDSTD 19 /* ... old std input */ 16659243Sobrien 16759243Sobrien#ifdef PROF 16859243Sobrien#define xexit(n) done(n) 16959243Sobrien#endif 17059243Sobrien 17159243Sobrien#ifdef cray 17259243Sobrien# define word word_t /* sys/types.h defines word.. bad move! */ 17359243Sobrien#endif 17459243Sobrien 17559243Sobrien#include <sys/types.h> 17659243Sobrien 17759243Sobrien#ifdef cray 17859243Sobrien# undef word 17959243Sobrien#endif 18059243Sobrien 18159243Sobrien/* 18259243Sobrien * Path separator in environment variables 18359243Sobrien */ 18459243Sobrien#ifndef PATHSEP 18569408Sache# if defined(__EMX__) || defined(WINNT_NATIVE) 18659243Sobrien# define PATHSEP ';' 18759243Sobrien# else /* unix */ 18859243Sobrien# define PATHSEP ':' 18969408Sache# endif /* __EMX__ || WINNT_NATIVE */ 19059243Sobrien#endif /* !PATHSEP */ 19159243Sobrien 19283098Smp#if defined(__HP_CXD_SPP) && !defined(__hpux) 19359243Sobrien# include <sys/cnx_stat.h> 19459243Sobrien# define stat stat64 19559243Sobrien# define fstat fstat64 19659243Sobrien# define lstat lstat64 19783098Smp#endif /* __HP_CXD_SPP && !__hpux */ 19859243Sobrien 19959243Sobrien/* 20059243Sobrien * This macro compares the st_dev field of struct stat. On aix on ibmESA 20159243Sobrien * st_dev is a structure, so comparison does not work. 20259243Sobrien */ 20359243Sobrien#ifndef DEV_DEV_COMPARE 20459243Sobrien# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 20559243Sobrien#endif /* DEV_DEV_COMPARE */ 20659243Sobrien 20759243Sobrien#ifdef _SEQUENT_ 20859243Sobrien# include <sys/procstats.h> 20959243Sobrien#endif /* _SEQUENT_ */ 21069408Sache#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 21159243Sobrien# include <sys/times.h> 21269408Sache#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 21359243Sobrien 21459243Sobrien#ifdef NLS 21559243Sobrien# include <locale.h> 21659243Sobrien#endif /* NLS */ 21759243Sobrien 21859243Sobrien 21969408Sache#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 22059243Sobrien# include <sys/param.h> 22169408Sache#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 22259243Sobrien#include <sys/stat.h> 22359243Sobrien 22459243Sobrien#if defined(BSDTIMES) || defined(BSDLIMIT) 22559243Sobrien# include <sys/time.h> 22669408Sache# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 22759243Sobrien# include "/usr/ucbinclude/sys/resource.h" 22859243Sobrien# else 22959243Sobrien# ifdef convex 23059243Sobrien# define sysrusage cvxrusage 23159243Sobrien# include <sys/sysinfo.h> 23259243Sobrien# else 23359243Sobrien# define sysrusage rusage 23459243Sobrien# include <sys/resource.h> 23559243Sobrien# endif /* convex */ 23659243Sobrien# endif /* SYSVREL>3 */ 23759243Sobrien#endif /* BSDTIMES */ 23859243Sobrien 23969408Sache#ifndef WINNT_NATIVE 24059243Sobrien# ifndef POSIX 24159243Sobrien# ifdef TERMIO 24259243Sobrien# include <termio.h> 24359243Sobrien# else /* SGTTY */ 24459243Sobrien# include <sgtty.h> 24559243Sobrien# endif /* TERMIO */ 24659243Sobrien# else /* POSIX */ 24759243Sobrien# ifndef _UWIN 24859243Sobrien# include <termios.h> 24959243Sobrien# else 25059243Sobrien# include <termio.h> 25159243Sobrien# endif /* _UWIN */ 25259243Sobrien# if SYSVREL > 3 25359243Sobrien# undef TIOCGLTC /* we don't need those, since POSIX has them */ 25459243Sobrien# undef TIOCSLTC 25559243Sobrien# undef CSWTCH 25659243Sobrien# define CSWTCH _POSIX_VDISABLE /* So job control works */ 25759243Sobrien# endif /* SYSVREL > 3 */ 25859243Sobrien# endif /* POSIX */ 25969408Sache#endif /* WINNT_NATIVE */ 26059243Sobrien 26159243Sobrien#ifdef sonyrisc 26259243Sobrien# include <sys/ttold.h> 26359243Sobrien#endif /* sonyrisc */ 26459243Sobrien 26569408Sache#if defined(POSIX) && !defined(WINNT_NATIVE) 26659243Sobrien/* 26759243Sobrien * We should be using setpgid and setpgid 26859243Sobrien * by now, but in some systems we use the 26959243Sobrien * old routines... 27059243Sobrien */ 27159243Sobrien# define getpgrp __getpgrp 27259243Sobrien# define setpgrp __setpgrp 27359243Sobrien# include <unistd.h> 27459243Sobrien# undef getpgrp 27559243Sobrien# undef setpgrp 27659243Sobrien 27759243Sobrien/* 27859243Sobrien * the gcc+protoize version of <stdlib.h> 27959243Sobrien * redefines malloc(), so we define the following 28059243Sobrien * to avoid it. 28159243Sobrien */ 28259243Sobrien# if defined(linux) || defined(sgi) || defined(_OSD_POSIX) 28359243Sobrien# define NO_FIX_MALLOC 28459243Sobrien# include <stdlib.h> 28559243Sobrien# else /* linux */ 28659243Sobrien# define _GNU_STDLIB_H 28759243Sobrien# define malloc __malloc 28859243Sobrien# define free __free 28959243Sobrien# define calloc __calloc 29059243Sobrien# define realloc __realloc 29159243Sobrien# include <stdlib.h> 29259243Sobrien# undef malloc 29359243Sobrien# undef free 29459243Sobrien# undef calloc 29559243Sobrien# undef realloc 29659243Sobrien# endif /* linux || sgi */ 29759243Sobrien# include <limits.h> 29869408Sache#endif /* POSIX && !WINNT_NATIVE */ 29959243Sobrien 30083098Smp#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) 30159243Sobrien# if !defined(pyr) && !defined(stellar) 30259243Sobrien# include <time.h> 30359243Sobrien# ifdef _MINIX 30459243Sobrien# define HZ CLOCKS_PER_SEC 30559243Sobrien# endif /* _MINIX */ 30659243Sobrien# endif /* !pyr && !stellar */ 30759243Sobrien#endif /* SYSVREL > 0 || _IBMR2 */ 30859243Sobrien 30959243Sobrien/* In the following ifdef the DECOSF1 has been commented so that later 31059243Sobrien * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 31159243Sobrien */ 31259243Sobrien#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 31369408Sache# if !defined(COHERENT) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 31459243Sobrien# include <sys/ioctl.h> 31559243Sobrien# endif 31659243Sobrien#endif 31759243Sobrien 31859243Sobrien#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 31959243Sobrien#undef CSWTCH 32059243Sobrien#define CSWTCH _POSIX_VDISABLE 32159243Sobrien#endif 32259243Sobrien 32369408Sache#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 32459243Sobrien# include <sys/filio.h> 32559243Sobrien#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 32659243Sobrien 32769408Sache#if !defined(_MINIX) && !defined(COHERENT) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 32859243Sobrien# include <sys/file.h> 32969408Sache#endif /* !_MINIX && !COHERENT && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 33059243Sobrien 33159243Sobrien#if !defined(O_RDONLY) || !defined(O_NDELAY) 33259243Sobrien# include <fcntl.h> 33359243Sobrien#endif 33459243Sobrien 33559243Sobrien#include <errno.h> 33659243Sobrien 33759243Sobrien#include <setjmp.h> 33859243Sobrien 33959243Sobrien#if __STDC__ || defined(FUNCPROTO) 34059243Sobrien# include <stdarg.h> 34159243Sobrien#else 34259243Sobrien#ifdef _MINIX 34359243Sobrien# include "mi.varargs.h" 34459243Sobrien#else 34559243Sobrien# include <varargs.h> 34659243Sobrien#endif /* _MINIX */ 34759243Sobrien#endif 34859243Sobrien 34959243Sobrien#ifdef DIRENT 35059243Sobrien# include <dirent.h> 35159243Sobrien#else 35259243Sobrien# ifdef hp9000s500 35359243Sobrien# include <ndir.h> 35459243Sobrien# else 35559243Sobrien# include <sys/dir.h> 35659243Sobrien# endif 35759243Sobrien# define dirent direct 35859243Sobrien#endif /* DIRENT */ 35959243Sobrien#if defined(hpux) || defined(sgi) || defined(OREO) || defined(COHERENT) 36059243Sobrien# include <stdio.h> /* So the fgetpwent() prototypes work */ 36159243Sobrien#endif /* hpux || sgi || OREO || COHERENT */ 36269408Sache#ifndef WINNT_NATIVE 36359243Sobrien#include <pwd.h> 36459243Sobrien#include <grp.h> 36569408Sache#endif /* WINNT_NATIVE */ 36659243Sobrien#ifdef PW_SHADOW 36759243Sobrien# include <shadow.h> 36859243Sobrien#endif /* PW_SHADOW */ 36959243Sobrien#ifdef PW_AUTH 37059243Sobrien# include <auth.h> 37159243Sobrien#endif /* PW_AUTH */ 37259243Sobrien#if defined(BSD) && !defined(POSIX) 37359243Sobrien# include <strings.h> 37459243Sobrien# define strchr(a, b) index(a, b) 37559243Sobrien# define strrchr(a, b) rindex(a, b) 37659243Sobrien#else 37759243Sobrien# include <string.h> 37859243Sobrien#endif /* BSD */ 37959243Sobrien 38059243Sobrien/* 38159243Sobrien * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 38259243Sobrien * include it yet, so we include it here 38359243Sobrien */ 38459243Sobrien#if defined(sgi) && SYSVREL > 3 38559243Sobrien# include <sys/cdefs.h> 38659243Sobrien#endif /* sgi && SYSVREL > 3 */ 38759243Sobrien 38859243Sobrien#ifdef REMOTEHOST 38959243Sobrien# ifdef ISC 39059243Sobrien# undef MAXHOSTNAMELEN /* Busted headers? */ 39159243Sobrien# endif 39259243Sobrien 39359243Sobrien# include <netinet/in.h> 39459243Sobrien# include <arpa/inet.h> 39559243Sobrien# include <sys/socket.h> 39669408Sache# if defined(_SS_SIZE) || defined(_SS_MAXSIZE) 39769408Sache# define INET6 39869408Sache# endif 39959243Sobrien# include <sys/uio.h> /* For struct iovec */ 40059243Sobrien#endif /* REMOTEHOST */ 40159243Sobrien 40259243Sobrien/* 40359243Sobrien * ANSIisms... These must be *after* the system include and 40459243Sobrien * *before* our includes, so that BSDreno has time to define __P 40559243Sobrien */ 40659243Sobrien#undef __P 40759243Sobrien#ifndef __P 40859243Sobrien# if __STDC__ || defined(FUNCPROTO) 40959243Sobrien# ifndef FUNCPROTO 41059243Sobrien# define FUNCPROTO 41159243Sobrien# endif 41259243Sobrien# define __P(a) a 41359243Sobrien# else 41459243Sobrien# define __P(a) () 41559243Sobrien# if !__STDC__ 41659243Sobrien# define const 41759243Sobrien# ifndef apollo 41859243Sobrien# define volatile /* Apollo 'c' extensions need this */ 41959243Sobrien# endif /* apollo */ 42059243Sobrien# endif 42159243Sobrien# endif 42259243Sobrien#endif 42359243Sobrien 42459243Sobrien 42559243Sobrien#ifdef PURIFY 42659243Sobrien/* exit normally, allowing purify to trace leaks */ 42759243Sobrien# define _exit exit 42859243Sobrientypedef int pret_t; 42959243Sobrien#else /* !PURIFY */ 43059243Sobrien/* 43159243Sobrien * If your compiler complains, then you can either 43259243Sobrien * throw it away and get gcc or, use the following define 43359243Sobrien * and get rid of the typedef. 43459243Sobrien * [The 4.2/3BSD vax compiler does not like that] 43559243Sobrien * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 43659243Sobrien */ 43759243Sobrien# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 43859243Sobrien# define pret_t void 43959243Sobrien# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 44059243Sobrientypedef void pret_t; 44159243Sobrien# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 44259243Sobrien#endif /* PURIFY */ 44359243Sobrien 44459243Sobrientypedef int bool; 44559243Sobrien 44669408Sache/* 44769408Sache * ASCII vs. EBCDIC 44869408Sache */ 44969408Sache#if 'Z' - 'A' == 25 45069408Sache# ifndef IS_ASCII 45169408Sache# define IS_ASCII 45269408Sache# endif 45369408Sache#endif 45469408Sache 45559243Sobrien#include "sh.types.h" 45659243Sobrien 45769408Sache#ifndef WINNT_NATIVE 45859243Sobrien# ifndef POSIX 45959243Sobrienextern pid_t getpgrp __P((int)); 46059243Sobrien# else /* POSIX */ 46159243Sobrien# if (defined(BSD) && !defined(BSD4_4)) || defined(SUNOS4) || defined(IRIS4D) || defined(DGUX) 46259243Sobrienextern pid_t getpgrp __P((int)); 46359243Sobrien# else /* !(BSD || SUNOS4 || IRIS4D || DGUX) */ 46459243Sobrienextern pid_t getpgrp __P((void)); 46559243Sobrien# endif /* BSD || SUNOS4 || IRISD || DGUX */ 46659243Sobrien# endif /* POSIX */ 46759243Sobrienextern pid_t setpgrp __P((pid_t, pid_t)); 46869408Sache#endif /* !WINNT_NATIVE */ 46959243Sobrien 47059243Sobrientypedef sigret_t (*signalfun_t) __P((int)); 47159243Sobrien 47259243Sobrien#ifndef lint 47359243Sobrientypedef ptr_t memalign_t; 47459243Sobrien#else 47559243Sobrientypedef union { 47659243Sobrien char am_char, *am_char_p; 47759243Sobrien short am_short, *am_short_p; 47859243Sobrien int am_int, *am_int_p; 47959243Sobrien long am_long, *am_long_p; 48059243Sobrien float am_float, *am_float_p; 48159243Sobrien double am_double, *am_double_p; 48259243Sobrien} *memalign_t; 48359243Sobrien 48459243Sobrien# define malloc lint_malloc 48559243Sobrien# define free lint_free 48659243Sobrien# define realloc lint_realloc 48759243Sobrien# define calloc lint_calloc 48859243Sobrien#endif 48959243Sobrien 49059243Sobrien#ifdef MDEBUG 49159243Sobrienextern memalign_t DebugMalloc __P((unsigned, char *, int)); 49259243Sobrienextern memalign_t DebugRealloc __P((ptr_t, unsigned, char *, int)); 49359243Sobrienextern memalign_t DebugCalloc __P((unsigned, unsigned, char *, int)); 49459243Sobrienextern void DebugFree __P((ptr_t, char *, int)); 49559243Sobrien# define xmalloc(i) DebugMalloc(i, __FILE__, __LINE__) 49659243Sobrien# define xrealloc(p, i)((p) ? DebugRealloc(p, i, __FILE__, __LINE__) : \ 49759243Sobrien DebugMalloc(i, __FILE__, __LINE__)) 49859243Sobrien# define xcalloc(n, s) DebugCalloc(n, s, __FILE__, __LINE__) 49959243Sobrien# define xfree(p) if (p) DebugFree(p, __FILE__, __LINE__) 50059243Sobrien#else 50159243Sobrien# ifdef SYSMALLOC 50259243Sobrien# define xmalloc(i) smalloc(i) 50359243Sobrien# define xrealloc(p, i) srealloc(p, i) 50459243Sobrien# define xcalloc(n, s) scalloc(n, s) 50559243Sobrien# define xfree(p) sfree(p) 50659243Sobrien# else 50759243Sobrien# define xmalloc(i) malloc(i) 50859243Sobrien# define xrealloc(p, i) realloc(p, i) 50959243Sobrien# define xcalloc(n, s) calloc(n, s) 51059243Sobrien# define xfree(p) free(p) 51159243Sobrien# endif /* SYSMALLOC */ 51259243Sobrien#endif /* MDEBUG */ 51359243Sobrien#include "sh.char.h" 51459243Sobrien#include "sh.err.h" 51559243Sobrien#include "sh.dir.h" 51659243Sobrien#include "sh.proc.h" 51759243Sobrien 51859243Sobrien#include "pathnames.h" 51959243Sobrien 52059243Sobrien 52159243Sobrien/* 52259243Sobrien * C shell 52359243Sobrien * 52459243Sobrien * Bill Joy, UC Berkeley 52559243Sobrien * October, 1978; May 1980 52659243Sobrien * 52759243Sobrien * Jim Kulp, IIASA, Laxenburg Austria 52859243Sobrien * April, 1980 52959243Sobrien */ 53059243Sobrien 53159243Sobrien#if !defined(MAXNAMLEN) && defined(_D_NAME_MAX) 53259243Sobrien# define MAXNAMLEN _D_NAME_MAX 53359243Sobrien#endif /* MAXNAMLEN */ 53459243Sobrien 53559243Sobrien#ifdef HESIOD 53659243Sobrien# include <hesiod.h> 53759243Sobrien#endif /* HESIOD */ 53859243Sobrien 53959243Sobrien#ifdef REMOTEHOST 54059243Sobrien# include <netdb.h> 54159243Sobrien#endif /* REMOTEHOST */ 54259243Sobrien 54359243Sobrien#ifndef MAXHOSTNAMELEN 54459243Sobrien# if defined(SCO) && (SYSVREL > 3) 54559243Sobrien# include <sys/socket.h> 54659243Sobrien# else 54783098Smp# define MAXHOSTNAMELEN 256 54859243Sobrien# endif 54959243Sobrien#endif /* MAXHOSTNAMELEN */ 55059243Sobrien 55159243Sobrien 55259243Sobrien 55359243Sobrien#define eq(a, b) (Strcmp(a, b) == 0) 55459243Sobrien 55559243Sobrien/* globone() flags */ 55659243Sobrien#define G_ERROR 0 /* default action: error if multiple words */ 55759243Sobrien#define G_IGNORE 1 /* ignore the rest of the words */ 55859243Sobrien#define G_APPEND 2 /* make a sentence by cat'ing the words */ 55959243Sobrien 56059243Sobrien/* 56159243Sobrien * Global flags 56259243Sobrien */ 56359243SobrienEXTERN bool chkstop IZERO; /* Warned of stopped jobs... allow exit */ 56459243Sobrien 56559243Sobrien#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 56659243Sobrien# define CLOSE_ON_EXEC 56759243Sobrien#else 56859243SobrienEXTERN bool didcch IZERO; /* Have closed unused fd's for child */ 56959243Sobrien#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 57059243Sobrien 57159243SobrienEXTERN bool didfds IZERO; /* Have setup i/o fd's for child */ 57259243SobrienEXTERN bool doneinp IZERO; /* EOF indicator after reset from readc */ 57359243SobrienEXTERN bool exiterr IZERO; /* Exit if error or non-zero exit status */ 57459243SobrienEXTERN bool child IZERO; /* Child shell ... errors cause exit */ 57559243SobrienEXTERN bool haderr IZERO; /* Reset was because of an error */ 57659243SobrienEXTERN bool intty IZERO; /* Input is a tty */ 57759243SobrienEXTERN bool intact IZERO; /* We are interactive... therefore prompt */ 57859243SobrienEXTERN bool justpr IZERO; /* Just print because of :p hist mod */ 57959243SobrienEXTERN bool loginsh IZERO; /* We are a loginsh -> .login/.logout */ 58059243SobrienEXTERN bool neednote IZERO; /* Need to pnotify() */ 58159243SobrienEXTERN bool noexec IZERO; /* Don't execute, just syntax check */ 58259243SobrienEXTERN bool pjobs IZERO; /* want to print jobs if interrupted */ 58359243SobrienEXTERN bool setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 58459243SobrienEXTERN bool timflg IZERO; /* Time the next waited for command */ 58559243SobrienEXTERN bool havhash IZERO; /* path hashing is available */ 58659243SobrienEXTERN bool editing IZERO; /* doing filename expansion and line editing */ 58759243SobrienEXTERN bool noediting IZERO; /* initial $term defaulted to noedit */ 58859243SobrienEXTERN bool bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 58959243SobrienEXTERN bool isoutatty IZERO; /* is SHOUT a tty */ 59059243SobrienEXTERN bool isdiagatty IZERO;/* is SHDIAG a tty */ 59159243SobrienEXTERN bool is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 59259243SobrienEXTERN bool is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 59359243SobrienEXTERN bool arun IZERO; /* Currently running multi-line-aliases */ 59459243SobrienEXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 59559243SobrienEXTERN bool inheredoc IZERO; /* Currently parsing a heredoc */ 59659243Sobrien 59759243Sobrien/* 59859243Sobrien * Global i/o info 59959243Sobrien */ 60059243SobrienEXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 60159243SobrienEXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 60259243Sobrienextern Char *ffile; /* Name of shell file for $0 */ 60359243Sobrienextern bool dolzero; /* if $?0 should return true... */ 60459243Sobrien 60559243Sobrienextern char *seterr; /* Error message from scanner/parser */ 60669408Sache#ifndef BSD4_4 60759243Sobrienextern int errno; /* Error from C library routines */ 60869408Sache#endif 60969408Sacheextern int exitset; 61059243SobrienEXTERN Char *shtemp IZERO; /* Temp name for << shell files in /tmp */ 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_ */ 62859415SobrienEXTERN long 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 $$ */ 63959243SobrienEXTERN int 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 */ 64759243SobrienEXTERN int uid, euid, /* Invokers real and effective */ 64859243Sobrien gid, egid; /* User and group ids */ 64959243SobrienEXTERN int 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 65459243SobrienEXTERN Char PromptBuf[INBUFSIZE*2]; /* buffer for the actual printed prompt. 65559243Sobrien * this must be large enough to contain 65659243Sobrien * the input line and the prompt, in 65759243Sobrien * case a correction occurred... 65859243Sobrien */ 65959243SobrienEXTERN Char RPromptBuf[INBUFSIZE]; /* buffer for right-hand side prompt */ 66059243Sobrien 66159243Sobrien/* 66259243Sobrien * To be able to redirect i/o for builtins easily, the shell moves the i/o 66359243Sobrien * descriptors it uses away from 0,1,2. 66459243Sobrien * Ideally these should be in units which are closed across exec's 66559243Sobrien * (this saves work) but for version 6, this is not usually possible. 66659243Sobrien * The desired initial values for these descriptors are defined in 66759243Sobrien * sh.local.h. 66859243Sobrien */ 66959243SobrienEXTERN int SHIN IZERO; /* Current shell input (script) */ 67059243SobrienEXTERN int SHOUT IZERO; /* Shell output */ 67159243SobrienEXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 67259243SobrienEXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 67359243Sobrien 67459243Sobrien 67559243Sobrien#if SYSVREL == 4 && defined(_UTS) 67659243Sobrien/* 67759243Sobrien * From: fadden@uts.amdahl.com (Andy McFadden) 67859243Sobrien * we need sigsetjmp for UTS4, but not UTS2.1 67959243Sobrien */ 68059243Sobrien# define SIGSETJMP 68159243Sobrien#endif 68259243Sobrien 68359243Sobrien/* 68459243Sobrien * Error control 68559243Sobrien * 68659243Sobrien * Errors in scanning and parsing set up an error message to be printed 68759243Sobrien * at the end and complete. Other errors always cause a reset. 68859243Sobrien * Because of source commands and .cshrc we need nested error catches. 68959243Sobrien */ 69059243Sobrien 69159243Sobrien#ifdef NO_STRUCT_ASSIGNMENT 69259243Sobrien 69359243Sobrien# ifdef SIGSETJMP 69459243Sobrien typedef sigjmp_buf jmp_buf_t; 69559243Sobrien /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */ 69659243Sobrien# define setexit() sigsetjmp(reslab) 69759243Sobrien# define reset() siglongjmp(reslab, 1) 69859243Sobrien# else 69959243Sobrien typedef jmp_buf jmp_buf_t; 70059243Sobrien /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */ 70159243Sobrien# define setexit() setjmp(reslab) 70259243Sobrien# define reset() longjmp(reslab, 1) 70359243Sobrien# endif 70459243Sobrien# define getexit(a) (void) memmove((ptr_t)&(a), (ptr_t)&reslab, sizeof(reslab)) 70559243Sobrien# define resexit(a) (void) memmove((ptr_t)&reslab, (ptr_t)&(a), sizeof(reslab)) 70659243Sobrien 70759243Sobrien# define cpybin(a, b) (void) memmove((ptr_t)&(a), (ptr_t)&(b), sizeof(Bin)) 70859243Sobrien 70959243Sobrien#else 71059243Sobrien 71159243Sobrien# ifdef SIGSETJMP 71259243Sobrien typedef struct { sigjmp_buf j; } jmp_buf_t; 71359243Sobrien# define setexit() sigsetjmp(reslab.j) 71459243Sobrien# define reset() siglongjmp(reslab.j, 1) 71559243Sobrien# else 71659243Sobrien typedef struct { jmp_buf j; } jmp_buf_t; 71759243Sobrien# define setexit() setjmp(reslab.j) 71859243Sobrien# define reset() longjmp(reslab.j, 1) 71959243Sobrien# endif 72059243Sobrien 72159243Sobrien# define getexit(a) (void) ((a) = reslab) 72259243Sobrien# define resexit(a) (void) (reslab = (a)) 72359243Sobrien 72459243Sobrien# define cpybin(a, b) (void) ((a) = (b)) 72559243Sobrien 72659243Sobrien#endif /* NO_STRUCT_ASSIGNMENT */ 72759243Sobrien 72859243Sobrienextern jmp_buf_t reslab; 72959243Sobrien 73059243SobrienEXTERN Char *gointr; /* Label for an onintr transfer */ 73159243Sobrien 73259243Sobrienextern signalfun_t parintr; /* Parents interrupt catch */ 73359243Sobrienextern signalfun_t parterm; /* Parents terminate catch */ 73459243Sobrien 73559243Sobrien/* 73659243Sobrien * Lexical definitions. 73759243Sobrien * 73859243Sobrien * All lexical space is allocated dynamically. 73959243Sobrien * The eighth/sixteenth bit of characters is used to prevent recognition, 74059243Sobrien * and eventually stripped. 74159243Sobrien */ 74259243Sobrien#define META 0200 74359243Sobrien#define ASCII 0177 74459243Sobrien#ifdef SHORT_STRINGS 74559243Sobrien# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 74659243Sobrien# define TRIM 0077777 /* Mask to strip quote bit */ 74759243Sobrien# define UNDER 0040000 /* Underline flag */ 74859243Sobrien# define BOLD 0020000 /* Bold flag */ 74959243Sobrien# define STANDOUT 0010000 /* Standout flag */ 75059243Sobrien# define LITERAL 0004000 /* Literal character flag */ 75159243Sobrien# define ATTRIBUTES 0074000 /* The bits used for attributes */ 75259243Sobrien# define CHAR 0000377 /* Mask to mask out the character */ 75359243Sobrien#else 75459243Sobrien# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 75559243Sobrien# define TRIM 0177 /* Mask to strip quote bit */ 75659243Sobrien# define UNDER 0000000 /* No extra bits to do both */ 75759243Sobrien# define BOLD 0000000 /* Bold flag */ 75859243Sobrien# define STANDOUT META /* Standout flag */ 75959243Sobrien# define LITERAL 0000000 /* Literal character flag */ 76059243Sobrien# define ATTRIBUTES 0200 /* The bits used for attributes */ 76159243Sobrien# define CHAR 0000177 /* Mask to mask out the character */ 76259243Sobrien#endif 76359243Sobrien 76459243SobrienEXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 76559243Sobrien 76659243Sobrien/* 76759243Sobrien * Each level of input has a buffered input structure. 76859243Sobrien * There are one or more blocks of buffered input for each level, 76959243Sobrien * exactly one if the input is seekable and tell is available. 77059243Sobrien * In other cases, the shell buffers enough blocks to keep all loops 77159243Sobrien * in the buffer. 77259243Sobrien */ 77359243SobrienEXTERN struct Bin { 77459243Sobrien off_t Bfseekp; /* Seek pointer */ 77559243Sobrien off_t Bfbobp; /* Seekp of beginning of buffers */ 77659243Sobrien off_t Bfeobp; /* Seekp of end of buffers */ 77759243Sobrien int Bfblocks; /* Number of buffer blocks */ 77859243Sobrien Char **Bfbuf; /* The array of buffer blocks */ 77959243Sobrien} B; 78059243Sobrien 78159243Sobrien/* 78259243Sobrien * This structure allows us to seek inside aliases 78359243Sobrien */ 78459243Sobrienstruct Ain { 78559243Sobrien int type; 78669408Sache#define TCSH_I_SEEK 0 /* Invalid seek */ 78769408Sache#define TCSH_A_SEEK 1 /* Alias seek */ 78869408Sache#define TCSH_F_SEEK 2 /* File seek */ 78969408Sache#define TCSH_E_SEEK 3 /* Eval seek */ 79059243Sobrien union { 79159243Sobrien off_t _f_seek; 79259243Sobrien Char* _c_seek; 79359243Sobrien } fc; 79459243Sobrien#define f_seek fc._f_seek 79559243Sobrien#define c_seek fc._c_seek 79659243Sobrien Char **a_seek; 79759243Sobrien} ; 79859243Sobrien 79959243Sobrienextern int aret; /* Type of last char returned */ 80059243Sobrien#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 80159243Sobrien (a)->f_seek == (b)->f_seek && \ 80259243Sobrien (a)->a_seek == (b)->a_seek) 80359243Sobrien 80459243Sobrien#define fseekp B.Bfseekp 80559243Sobrien#define fbobp B.Bfbobp 80659243Sobrien#define feobp B.Bfeobp 80759243Sobrien#define fblocks B.Bfblocks 80859243Sobrien#define fbuf B.Bfbuf 80959243Sobrien 81059243Sobrien/* 81159243Sobrien * The shell finds commands in loops by reseeking the input 81259243Sobrien * For whiles, in particular, it reseeks to the beginning of the 81359243Sobrien * line the while was on; hence the while placement restrictions. 81459243Sobrien */ 81559243SobrienEXTERN struct Ain lineloc; 81659243Sobrien 81759243SobrienEXTERN bool cantell; /* Is current source tellable ? */ 81859243Sobrien 81959243Sobrien/* 82059243Sobrien * Input lines are parsed into doubly linked circular 82159243Sobrien * lists of words of the following form. 82259243Sobrien */ 82359243Sobrienstruct wordent { 82459243Sobrien Char *word; 82559243Sobrien struct wordent *prev; 82659243Sobrien struct wordent *next; 82759243Sobrien}; 82859243Sobrien 82959243Sobrien/* 83059243Sobrien * During word building, both in the initial lexical phase and 83159243Sobrien * when expanding $ variable substitutions, expansion by `!' and `$' 83259243Sobrien * must be inhibited when reading ahead in routines which are themselves 83359243Sobrien * processing `!' and `$' expansion or after characters such as `\' or in 83459243Sobrien * quotations. The following flags are passed to the getC routines 83559243Sobrien * telling them which of these substitutions are appropriate for the 83659243Sobrien * next character to be returned. 83759243Sobrien */ 83859243Sobrien#define DODOL 1 83959243Sobrien#define DOEXCL 2 84059243Sobrien#define DOALL DODOL|DOEXCL 84159243Sobrien 84259243Sobrien/* 84359243Sobrien * Labuf implements a general buffer for lookahead during lexical operations. 84459243Sobrien * Text which is to be placed in the input stream can be stuck here. 84559243Sobrien * We stick parsed ahead $ constructs during initial input, 84659243Sobrien * process id's from `$$', and modified variable values (from qualifiers 84759243Sobrien * during expansion in sh.dol.c) here. 84859243Sobrien */ 84959243SobrienEXTERN Char *lap; 85059243Sobrien 85159243Sobrien/* 85259243Sobrien * Parser structure 85359243Sobrien * 85459243Sobrien * Each command is parsed to a tree of command structures and 85559243Sobrien * flags are set bottom up during this process, to be propagated down 85659243Sobrien * as needed during the semantics/exeuction pass (sh.sem.c). 85759243Sobrien */ 85859243Sobrienstruct command { 85959243Sobrien unsigned char t_dtyp; /* Type of node */ 86059243Sobrien#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 86159243Sobrien#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 86259243Sobrien#define NODE_PIPE 3 /* t_dlef | t_drit */ 86359243Sobrien#define NODE_LIST 4 /* t_dlef ; t_drit */ 86459243Sobrien#define NODE_OR 5 /* t_dlef || t_drit */ 86559243Sobrien#define NODE_AND 6 /* t_dlef && t_drit */ 86659243Sobrien unsigned char t_nice; /* Nice value */ 86759243Sobrien#ifdef apollo 86859243Sobrien unsigned char t_systype; /* System environment */ 86959243Sobrien#endif 87059243Sobrien unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 87159243Sobrien/* save these when re-doing */ 87259243Sobrien#ifndef apollo 87359243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 87459243Sobrien#else 87559243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 87659243Sobrien#endif 87759243Sobrien#define F_AMPERSAND (1<<0) /* executes in background */ 87859243Sobrien#define F_APPEND (1<<1) /* output is redirected >> */ 87959243Sobrien#define F_PIPEIN (1<<2) /* input is a pipe */ 88059243Sobrien#define F_PIPEOUT (1<<3) /* output is a pipe */ 88159243Sobrien#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 88259243Sobrien#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 88359243Sobrien/* spare */ 88459243Sobrien#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 88559243Sobrien#define F_OVERWRITE (1<<8) /* output was ! */ 88659243Sobrien#define F_READ (1<<9) /* input redirection is << */ 88759243Sobrien#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 88859243Sobrien#define F_NICE (1<<11) /* t_nice is meaningful */ 88959243Sobrien#define F_NOHUP (1<<12) /* nohup this command */ 89059243Sobrien#define F_TIME (1<<13) /* time this command */ 89159243Sobrien#define F_BACKQ (1<<14) /* command is in `` */ 89259243Sobrien#define F_HUP (1<<15) /* hup this command */ 89359243Sobrien#ifdef apollo 89459243Sobrien#define F_VER (1<<16) /* execute command under SYSTYPE */ 89559243Sobrien#endif 89659243Sobrien union { 89759243Sobrien Char *T_dlef; /* Input redirect word */ 89859243Sobrien struct command *T_dcar; /* Left part of list/pipe */ 89959243Sobrien } L; 90059243Sobrien union { 90159243Sobrien Char *T_drit; /* Output redirect word */ 90259243Sobrien struct command *T_dcdr; /* Right part of list/pipe */ 90359243Sobrien } R; 90459243Sobrien#define t_dlef L.T_dlef 90559243Sobrien#define t_dcar L.T_dcar 90659243Sobrien#define t_drit R.T_drit 90759243Sobrien#define t_dcdr R.T_dcdr 90859243Sobrien Char **t_dcom; /* Command/argument vector */ 90959243Sobrien struct command *t_dspr; /* Pointer to ()'d subtree */ 91059243Sobrien}; 91159243Sobrien 91259243Sobrien 91359243Sobrien/* 91459243Sobrien * The keywords for the parser 91559243Sobrien */ 91659243Sobrien#define TC_BREAK 0 91759243Sobrien#define TC_BRKSW 1 91859243Sobrien#define TC_CASE 2 91959243Sobrien#define TC_DEFAULT 3 92059243Sobrien#define TC_ELSE 4 92159243Sobrien#define TC_END 5 92259243Sobrien#define TC_ENDIF 6 92359243Sobrien#define TC_ENDSW 7 92459243Sobrien#define TC_EXIT 8 92559243Sobrien#define TC_FOREACH 9 92659243Sobrien#define TC_GOTO 10 92759243Sobrien#define TC_IF 11 92859243Sobrien#define TC_LABEL 12 92959243Sobrien#define TC_LET 13 93059243Sobrien#define TC_SET 14 93159243Sobrien#define TC_SWITCH 15 93259243Sobrien#define TC_TEST 16 93359243Sobrien#define TC_THEN 17 93459243Sobrien#define TC_WHILE 18 93559243Sobrien 93659243Sobrien/* 93759243Sobrien * These are declared here because they want to be 93859243Sobrien * initialized in sh.init.c (to allow them to be made readonly) 93959243Sobrien */ 94059243Sobrien 94159243Sobrien#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 94259243Sobrien /* Avoid hpux ansi mode spurious warnings */ 94359243Sobrientypedef void (*bfunc_t) (); 94459243Sobrien#else 94559243Sobrientypedef void (*bfunc_t) __P((Char **, struct command *)); 94659243Sobrien#endif /* hpux && __STDC__ && !__GNUC__ */ 94759243Sobrien 94859243Sobrienextern struct biltins { 94959243Sobrien char *bname; 95059243Sobrien bfunc_t bfunct; 95159243Sobrien int minargs, maxargs; 95259243Sobrien} bfunc[]; 95359243Sobrienextern int nbfunc; 95469408Sache#ifdef WINNT_NATIVE 95559243Sobrienextern struct biltins nt_bfunc[]; 95659243Sobrienextern int nt_nbfunc; 95769408Sache#endif /* WINNT_NATIVE*/ 95859243Sobrien 95959243Sobrienextern struct srch { 96059243Sobrien char *s_name; 96159243Sobrien int s_value; 96259243Sobrien} srchn[]; 96359243Sobrienextern int nsrchn; 96459243Sobrien 96559243Sobrien/* 96659243Sobrien * Structure defining the existing while/foreach loops at this 96759243Sobrien * source level. Loops are implemented by seeking back in the 96859243Sobrien * input. For foreach (fe), the word list is attached here. 96959243Sobrien */ 97059243SobrienEXTERN struct whyle { 97159243Sobrien struct Ain w_start; /* Point to restart loop */ 97259243Sobrien struct Ain w_end; /* End of loop (0 if unknown) */ 97359243Sobrien Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 97459243Sobrien Char *w_fename; /* Name for fe */ 97559243Sobrien struct whyle *w_next; /* Next (more outer) loop */ 97659243Sobrien} *whyles; 97759243Sobrien 97859243Sobrien/* 97959243Sobrien * Variable structure 98059243Sobrien * 98159243Sobrien * Aliases and variables are stored in AVL balanced binary trees. 98259243Sobrien */ 98359243SobrienEXTERN struct varent { 98459243Sobrien Char **vec; /* Array of words which is the value */ 98559243Sobrien Char *v_name; /* Name of variable/alias */ 98659243Sobrien int v_flags; /* Flags */ 98759243Sobrien#define VAR_ALL -1 98859243Sobrien#define VAR_READONLY 1 98959243Sobrien#define VAR_READWRITE 2 99059243Sobrien#define VAR_NOGLOB 4 99159243Sobrien#define VAR_FIRST 32 99259243Sobrien#define VAR_LAST 64 99359243Sobrien struct varent *v_link[3]; /* The links, see below */ 99459243Sobrien int v_bal; /* Balance factor */ 99559243Sobrien} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 99659243Sobrien 99759243Sobrien#define v_left v_link[0] 99859243Sobrien#define v_right v_link[1] 99959243Sobrien#define v_parent v_link[2] 100059243Sobrien 100159243Sobrien#define adrof(v) adrof1(v, &shvhed) 100259243Sobrien#define varval(v) value1(v, &shvhed) 100359243Sobrien 100459243Sobrien/* 100559243Sobrien * The following are for interfacing redo substitution in 100659243Sobrien * aliases to the lexical routines. 100759243Sobrien */ 100859243SobrienEXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 100959243SobrienEXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 101059243SobrienEXTERN Char **alvec IZERO_STRUCT, 101159243Sobrien *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 101259243Sobrien 101359243Sobrien/* 101459243Sobrien * Filename/command name expansion variables 101559243Sobrien */ 101659243SobrienEXTERN int gflag; /* After tglob -> is globbing needed? */ 101759243Sobrien 101859243Sobrien#define MAXVARLEN 30 /* Maximum number of char in a variable name */ 101959243Sobrien 102059243Sobrien#ifndef MAXPATHLEN 102159243Sobrien# define MAXPATHLEN 2048 102259243Sobrien#endif /* MAXPATHLEN */ 102359243Sobrien 102459243Sobrien#ifndef MAXNAMLEN 102559243Sobrien# define MAXNAMLEN 512 102659243Sobrien#endif /* MAXNAMLEN */ 102759243Sobrien 102859243Sobrien#ifndef HAVENOLIMIT 102959243Sobrien/* 103059243Sobrien * resource limits 103159243Sobrien */ 103259243Sobrienextern struct limits { 103359243Sobrien int limconst; 103459243Sobrien char *limname; 103559243Sobrien int limdiv; 103659243Sobrien char *limscale; 103759243Sobrien} limits[]; 103859243Sobrien#endif /* !HAVENOLIMIT */ 103959243Sobrien 104059243Sobrien/* 104159243Sobrien * Variables for filename expansion 104259243Sobrien */ 104359243Sobrienextern Char **gargv; /* Pointer to the (stack) arglist */ 104459243Sobrienextern int gargc; /* Number args in gargv */ 104559243Sobrien 104659243Sobrien/* 104759243Sobrien * Variables for command expansion. 104859243Sobrien */ 104959243Sobrienextern Char **pargv; /* Pointer to the argv list space */ 105059243SobrienEXTERN Char *pargs; /* Pointer to start current word */ 105159243SobrienEXTERN long pnleft; /* Number of chars left in pargs */ 105259243SobrienEXTERN Char *pargcp; /* Current index into pargs */ 105359243Sobrien 105459243Sobrien/* 105559243Sobrien * History list 105659243Sobrien * 105759243Sobrien * Each history list entry contains an embedded wordlist 105859243Sobrien * from the scanner, a number for the event, and a reference count 105959243Sobrien * to aid in discarding old entries. 106059243Sobrien * 106159243Sobrien * Essentially "invisible" entries are put on the history list 106259243Sobrien * when history substitution includes modifiers, and thrown away 106359243Sobrien * at the next discarding since their event numbers are very negative. 106459243Sobrien */ 106559243SobrienEXTERN struct Hist { 106659243Sobrien struct wordent Hlex; 106759243Sobrien int Hnum; 106859243Sobrien int Href; 106959243Sobrien time_t Htime; 107059243Sobrien Char *histline; 107159243Sobrien struct Hist *Hnext; 107259243Sobrien} Histlist IZERO_STRUCT; 107359243Sobrien 107459243SobrienEXTERN struct wordent paraml; /* Current lexical word list */ 107559243SobrienEXTERN int eventno; /* Next events number */ 107659243SobrienEXTERN int lastev; /* Last event reference (default) */ 107759243Sobrien 107859243SobrienEXTERN Char HIST; /* history invocation character */ 107959243SobrienEXTERN Char HISTSUB; /* auto-substitute character */ 108059243SobrienEXTERN Char PRCH; /* Prompt symbol for regular users */ 108159243SobrienEXTERN Char PRCHROOT; /* Prompt symbol for root */ 108259243Sobrien 108359243Sobrien/* 108459243Sobrien * For operating systems with single case filenames (OS/2) 108559243Sobrien */ 108659243Sobrien#ifdef CASE_INSENSITIVE 108759243Sobrien# define samecase(x) (isupper((unsigned char)(x)) ? \ 108859243Sobrien tolower((unsigned char)(x)) : (x)) 108959243Sobrien#else 109059243Sobrien# define samecase(x) (x) 109159243Sobrien#endif /* CASE_INSENSITIVE */ 109259243Sobrien 109359243Sobrien/* 109459243Sobrien * strings.h: 109559243Sobrien */ 109659243Sobrien#ifndef SHORT_STRINGS 109759243Sobrien#define Strchr(a, b) strchr(a, b) 109859243Sobrien#define Strrchr(a, b) strrchr(a, b) 109959243Sobrien#define Strcat(a, b) strcat(a, b) 110059243Sobrien#define Strncat(a, b, c) strncat(a, b, c) 110159243Sobrien#define Strcpy(a, b) strcpy(a, b) 110259243Sobrien#define Strncpy(a, b, c) strncpy(a, b, c) 110359243Sobrien#define Strlen(a) strlen(a) 110459243Sobrien#define Strcmp(a, b) strcmp(a, b) 110559243Sobrien#define Strncmp(a, b, c) strncmp(a, b, c) 110659243Sobrien 110759243Sobrien#define Strspl(a, b) strspl(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) 111559243Sobrien#define short2str(a) strip(a) 111659243Sobrien#else 111759243Sobrien#define Strchr(a, b) s_strchr(a, b) 111859243Sobrien#define Strrchr(a, b) s_strrchr(a, b) 111959243Sobrien#define Strcat(a, b) s_strcat(a, b) 112059243Sobrien#define Strncat(a, b, c) s_strncat(a, b, c) 112159243Sobrien#define Strcpy(a, b) s_strcpy(a, b) 112259243Sobrien#define Strncpy(a, b, c) s_strncpy(a, b, c) 112359243Sobrien#define Strlen(a) s_strlen(a) 112459243Sobrien#define Strcmp(a, b) s_strcmp(a, b) 112559243Sobrien#define Strncmp(a, b, c) s_strncmp(a, b, c) 112659243Sobrien 112759243Sobrien#define Strspl(a, b) s_strspl(a, b) 112859243Sobrien#define Strsave(a) s_strsave(a) 112959243Sobrien#define Strend(a) s_strend(a) 113059243Sobrien#define Strstr(a, b) s_strstr(a, b) 113159243Sobrien#endif 113259243Sobrien 113359243Sobrien/* 113459243Sobrien * setname is a macro to save space (see sh.err.c) 113559243Sobrien */ 113659243SobrienEXTERN char *bname; 113759243Sobrien 113859243Sobrien#define setname(a) (bname = (a)) 113959243Sobrien 114059243Sobrien#ifdef VFORK 114159243SobrienEXTERN Char *Vsav; 114259243SobrienEXTERN Char *Vdp; 114359243SobrienEXTERN Char *Vexpath; 114459243SobrienEXTERN char **Vt; 114559243Sobrien#endif /* VFORK */ 114659243Sobrien 114759243SobrienEXTERN Char **evalvec; 114859243SobrienEXTERN Char *evalp; 114959243Sobrien 115059243Sobrienextern struct mesg { 115159243Sobrien char *iname; /* name from /usr/include */ 115259243Sobrien char *pname; /* print name */ 115359243Sobrien} mesg[]; 115459243Sobrien 115559243Sobrien/* word_chars is set by default to WORD_CHARS but can be overridden by 115659243Sobrien the worchars variable--if unset, reverts to WORD_CHARS */ 115759243Sobrien 115859243SobrienEXTERN Char *word_chars; 115959243Sobrien 116059243Sobrien#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 116159243Sobrien 116259243SobrienEXTERN Char *STR_SHELLPATH; 116359243Sobrien 116459243Sobrien#ifdef _PATH_BSHELL 116559243SobrienEXTERN Char *STR_BSHELL; 116659243Sobrien#endif 116759243SobrienEXTERN Char *STR_WORD_CHARS; 116859243SobrienEXTERN Char **STR_environ IZERO; 116959243Sobrien 117059243Sobrienextern int dont_free; /* Tell free that we are in danger if we free */ 117159243Sobrien 117259243Sobrienextern Char *INVPTR; 117359243Sobrienextern Char **INVPPTR; 117459243Sobrien 117559243Sobrienextern char *progname; 117659243Sobrienextern int tcsh; 117759243Sobrien 117859243Sobrien#include "tc.h" 117959243Sobrien#include "sh.decls.h" 118059243Sobrien 118159243Sobrien/* 118259243Sobrien * To print system call errors... 118359243Sobrien */ 118459243Sobrien#ifdef BSD4_4 118559243Sobrien# include <errno.h> 118659243Sobrien#else 118759243Sobrien# ifndef linux 118859243Sobrien# ifdef NEEDstrerror 118959243Sobrienextern char *sys_errlist[]; 119059243Sobrien# endif 119159243Sobrienextern int errno, sys_nerr; 119259243Sobrien# endif /* !linux */ 119359243Sobrien#endif 119459243Sobrien 119569408Sache#ifndef WINNT_NATIVE 119659243Sobrien# ifdef NLS_CATALOGS 119759243Sobrien# ifdef linux 119859243Sobrien# include <locale.h> 119959243Sobrien# ifdef notdef 120059243Sobrien# include <localeinfo.h> /* Has this changed ? */ 120159243Sobrien# endif 120259243Sobrien# include <features.h> 120359243Sobrien# endif 120459243Sobrien# ifdef SUNOS4 120559243Sobrien /* Who stole my nl_types.h? :-( 120659243Sobrien * All this stuff is in the man pages, but nowhere else? 120759243Sobrien * This does not link right now... 120859243Sobrien */ 120959243Sobrien typedef void *nl_catd; 121059243Sobrien extern const char * catgets __P((nl_catd, int, int, const char *)); 121159243Sobrien nl_catd catopen __P((const char *, int)); 121259243Sobrien int catclose __P((nl_catd)); 121359243Sobrien# else 121459243Sobrien# ifdef __uxps__ 121559243Sobrien# define gettxt gettxt_ds 121659243Sobrien# endif 121759243Sobrien# include <nl_types.h> 121859243Sobrien# ifdef __uxps__ 121959243Sobrien# undef gettxt 122059243Sobrien# endif 122159243Sobrien# endif 122259243Sobrien# ifndef MCLoadBySet 122359243Sobrien# define MCLoadBySet 0 122459243Sobrien# endif 122559243SobrienEXTERN nl_catd catd; 122659243Sobrien# define CGETS(b, c, d) catgets(catd, b, c, d) 122759243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 122859243Sobrien# else 122959243Sobrien# define CGETS(b, c, d) d 123059243Sobrien# define CSAVS(b, c, d) d 123159243Sobrien# endif 123269408Sache#else /* WINNT_NATIVE */ 123359243Sobrien# define CGETS(b, c, d) nt_cgets( b, c, d) 123459243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 123569408Sache#endif /* WINNT_NATIVE */ 123659243Sobrien 123759243Sobrien/* 123859243Sobrien * Since on some machines characters are unsigned, and the signed 123959243Sobrien * keyword is not universally implemented, we treat all characters 124059243Sobrien * as unsigned and sign extend them where we need. 124159243Sobrien */ 124259243Sobrien#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 124359243Sobrien 124459243Sobrien#endif /* _h_sh */ 1245