1316958Sdchagin/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.178 2016/09/12 16:33:54 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 */ 78231990Smp 79231990Smp#if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET) 80231990Smp#define AUTOSET_KANJI 81231990Smp#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 93231990Smp#define TMP_TEMPLATE ".XXXXXX" 94231990Smp 9559243Sobrien#ifdef SHORT_STRINGS 96167465Smp# ifdef WIDE_STRINGS 97145479Smp#include <wchar.h> 98231990Smp# ifdef UTF16_STRINGS 99231990Smptypedef wint_t Char; 100231990Smp# else 101145479Smptypedef wchar_t Char; 102231990Smp#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) 107231990Smp#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 127231990Smp#if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER) 128231990Smp#define __inline 129231990Smp#endif 130316958Sdchagin#ifdef _MSC_VER 131316958Sdchagin#define TCSH_PTRDIFF_T_FMT "I" 132316958Sdchagin#else 133316958Sdchagin#define TCSH_PTRDIFF_T_FMT "t" 134316958Sdchagin#endif 13559243Sobrien/* Elide unused argument warnings */ 13659243Sobrien#define USE(a) (void) (a) 137231990Smp#define TCSH_IGNORE(a) tcsh_ignore((intptr_t)a) 138231990Smpstatic __inline void tcsh_ignore(intptr_t a) 139195609Smp{ 140195609Smp USE(a); 141195609Smp} 14259243Sobrien 14359243Sobrien/* 14459243Sobrien * Return true if the path is absolute 14559243Sobrien */ 146131962Smp#if defined(WINNT_NATIVE) 147100616Smp# define ABSOLUTEP(p) ((p)[0] == '/' || \ 148100616Smp (Isalpha((p)[0]) && (p)[1] == ':')) 149131962Smp#elif defined(__CYGWIN__) 150131962Smp# define ABSOLUTEP(p) ((p)[0] == '/' || \ 151131962Smp (Isalpha((p)[0]) && (p)[1] == ':' && \ 152131962Smp ((p)[2] == '\0' || (p)[2] == '/'))) 153100616Smp#else /* !WINNT_NATIVE && !__CYGWIN__ */ 15459243Sobrien# define ABSOLUTEP(p) (*(p) == '/') 155100616Smp#endif /* WINNT_NATIVE || __CYGWIN__ */ 15659243Sobrien 15759243Sobrien/* 15859243Sobrien * Fundamental definitions which may vary from system to system. 15959243Sobrien * 16059243Sobrien * BUFSIZE The i/o buffering size; also limits word size 16159243Sobrien * MAILINTVL How often to mailcheck; more often is more expensive 16259243Sobrien */ 16359243Sobrien#ifdef BUFSIZE 16461524Sobrien# if BUFSIZE < 4096 16559243Sobrien# undef BUFSIZE 16661524Sobrien# define BUFSIZE 4096 /* buffer size should be no less than this */ 16759243Sobrien# endif 16859243Sobrien#else 16961524Sobrien# define BUFSIZE 4096 17059243Sobrien#endif /* BUFSIZE */ 17159243Sobrien 17259243Sobrien#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 17359243Sobrien#define MAILINTVL 600 /* 10 minutes */ 17459243Sobrien 17559243Sobrien#ifndef INBUFSIZE 17659243Sobrien# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 17759243Sobrien#endif /* INBUFSIZE */ 17859243Sobrien 17959243Sobrien 18059243Sobrien/* 18159243Sobrien * What our builtin echo looks like 18259243Sobrien */ 18359243Sobrien#define NONE_ECHO 0 18459243Sobrien#define BSD_ECHO 1 18559243Sobrien#define SYSV_ECHO 2 18659243Sobrien#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 18759243Sobrien 18859243Sobrien#ifndef ECHO_STYLE 18959243Sobrien# if SYSVREL > 0 19059243Sobrien# define ECHO_STYLE SYSV_ECHO 19159243Sobrien# else /* SYSVREL == 0 */ 19259243Sobrien# define ECHO_STYLE BSD_ECHO 19359243Sobrien# endif /* SYSVREL */ 19459243Sobrien#endif /* ECHO_STYLE */ 19559243Sobrien 196316958Sdchagin/* values for noclobber */ 197316958Sdchagin#define NOCLOBBER_DEFAULT 1 198316958Sdchagin#define NOCLOBBER_NOTEMPTY 2 199316958Sdchagin#define NOCLOBBER_ASK 4 200316958Sdchagin 20159243Sobrien/* 20259243Sobrien * The shell moves std in/out/diag and the old std input away from units 20359243Sobrien * 0, 1, and 2 so that it is easy to set up these standards for invoked 20459243Sobrien * commands. 20559243Sobrien */ 206145479Smp#define FSAFE 5 /* We keep the first 5 descriptors untouched */ 20759243Sobrien#define FSHTTY 15 /* /dev/tty when manip pgrps */ 20859243Sobrien#define FSHIN 16 /* Preferred desc for shell input */ 20959243Sobrien#define FSHOUT 17 /* ... shell output */ 21059243Sobrien#define FSHDIAG 18 /* ... shell diagnostics */ 21159243Sobrien#define FOLDSTD 19 /* ... old std input */ 21259243Sobrien 21359243Sobrien#ifdef PROF 21459243Sobrien#define xexit(n) done(n) 21559243Sobrien#endif 21659243Sobrien 21759243Sobrien#ifdef cray 21859243Sobrien# define word word_t /* sys/types.h defines word.. bad move! */ 21959243Sobrien#endif 22059243Sobrien 22159243Sobrien#include <sys/types.h> 22259243Sobrien 22359243Sobrien#ifdef cray 22459243Sobrien# undef word 22559243Sobrien#endif 22659243Sobrien 22759243Sobrien/* 22859243Sobrien * Path separator in environment variables 22959243Sobrien */ 23059243Sobrien#ifndef PATHSEP 23169408Sache# if defined(__EMX__) || defined(WINNT_NATIVE) 23259243Sobrien# define PATHSEP ';' 23359243Sobrien# else /* unix */ 23459243Sobrien# define PATHSEP ':' 23569408Sache# endif /* __EMX__ || WINNT_NATIVE */ 23659243Sobrien#endif /* !PATHSEP */ 23759243Sobrien 23883098Smp#if defined(__HP_CXD_SPP) && !defined(__hpux) 23959243Sobrien# include <sys/cnx_stat.h> 24059243Sobrien# define stat stat64 24159243Sobrien# define fstat fstat64 24259243Sobrien# define lstat lstat64 24383098Smp#endif /* __HP_CXD_SPP && !__hpux */ 24459243Sobrien 245231990Smp#ifdef HAVE_LONG_LONG 246231990Smptypedef long long tcsh_number_t; 247231990Smp#else 248231990Smptypedef long tcsh_number_t; 249231990Smp#endif 25059243Sobrien/* 25159243Sobrien * This macro compares the st_dev field of struct stat. On aix on ibmESA 25259243Sobrien * st_dev is a structure, so comparison does not work. 25359243Sobrien */ 25459243Sobrien#ifndef DEV_DEV_COMPARE 25559243Sobrien# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 25659243Sobrien#endif /* DEV_DEV_COMPARE */ 25759243Sobrien 25859243Sobrien#ifdef _SEQUENT_ 25959243Sobrien# include <sys/procstats.h> 26059243Sobrien#endif /* _SEQUENT_ */ 26169408Sache#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 26259243Sobrien# include <sys/times.h> 26369408Sache#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 26459243Sobrien 26559243Sobrien#ifdef NLS 26659243Sobrien# include <locale.h> 26759243Sobrien#endif /* NLS */ 26859243Sobrien 26969408Sache#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 27059243Sobrien# include <sys/param.h> 27169408Sache#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 27259243Sobrien#include <sys/stat.h> 27359243Sobrien 27459243Sobrien#if defined(BSDTIMES) || defined(BSDLIMIT) 27559243Sobrien# include <sys/time.h> 27669408Sache# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 27759243Sobrien# include "/usr/ucbinclude/sys/resource.h" 27859243Sobrien# else 27959243Sobrien# ifdef convex 28059243Sobrien# define sysrusage cvxrusage 28159243Sobrien# include <sys/sysinfo.h> 28259243Sobrien# else 28359243Sobrien# define sysrusage rusage 28459243Sobrien# include <sys/resource.h> 28559243Sobrien# endif /* convex */ 28659243Sobrien# endif /* SYSVREL>3 */ 28759243Sobrien#endif /* BSDTIMES */ 28859243Sobrien 28969408Sache#ifndef WINNT_NATIVE 29059243Sobrien# ifndef POSIX 29159243Sobrien# ifdef TERMIO 29259243Sobrien# include <termio.h> 29359243Sobrien# else /* SGTTY */ 29459243Sobrien# include <sgtty.h> 29559243Sobrien# endif /* TERMIO */ 29659243Sobrien# else /* POSIX */ 29759243Sobrien# ifndef _UWIN 29859243Sobrien# include <termios.h> 29959243Sobrien# else 30059243Sobrien# include <termio.h> 30159243Sobrien# endif /* _UWIN */ 302231990Smp# if SYSVREL > 3 || defined(__linux__) 30359243Sobrien# undef TIOCGLTC /* we don't need those, since POSIX has them */ 30459243Sobrien# undef TIOCSLTC 30559243Sobrien# undef CSWTCH 30659243Sobrien# define CSWTCH _POSIX_VDISABLE /* So job control works */ 30759243Sobrien# endif /* SYSVREL > 3 */ 30859243Sobrien# endif /* POSIX */ 30969408Sache#endif /* WINNT_NATIVE */ 31059243Sobrien 31159243Sobrien#ifdef sonyrisc 31259243Sobrien# include <sys/ttold.h> 31359243Sobrien#endif /* sonyrisc */ 31459243Sobrien 31569408Sache#if defined(POSIX) && !defined(WINNT_NATIVE) 31659243Sobrien# include <unistd.h> 31759243Sobrien 31859243Sobrien/* 31959243Sobrien * the gcc+protoize version of <stdlib.h> 32059243Sobrien * redefines malloc(), so we define the following 32159243Sobrien * to avoid it. 32259243Sobrien */ 323231990Smp# if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) 32459243Sobrien# define NO_FIX_MALLOC 32559243Sobrien# include <stdlib.h> 326145479Smp# else /* glibc */ 32759243Sobrien# define _GNU_STDLIB_H 32859243Sobrien# define malloc __malloc 32959243Sobrien# define free __free 33059243Sobrien# define calloc __calloc 33159243Sobrien# define realloc __realloc 33259243Sobrien# include <stdlib.h> 33359243Sobrien# undef malloc 33459243Sobrien# undef free 33559243Sobrien# undef calloc 33659243Sobrien# undef realloc 337145479Smp# endif /* glibc || sgi */ 33869408Sache#endif /* POSIX && !WINNT_NATIVE */ 339167465Smp#include <limits.h> 34059243Sobrien 341231990Smp#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) 34259243Sobrien# if !defined(pyr) && !defined(stellar) 34359243Sobrien# include <time.h> 34459243Sobrien# ifdef _MINIX 34559243Sobrien# define HZ CLOCKS_PER_SEC 34659243Sobrien# endif /* _MINIX */ 34759243Sobrien# endif /* !pyr && !stellar */ 34859243Sobrien#endif /* SYSVREL > 0 || _IBMR2 */ 34959243Sobrien 35059243Sobrien/* In the following ifdef the DECOSF1 has been commented so that later 35159243Sobrien * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 35259243Sobrien */ 35359243Sobrien#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 354167465Smp# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 35559243Sobrien# include <sys/ioctl.h> 356231990Smp# if SYSVREL > 3 || defined(__linux__) 357231990Smp# undef TIOCGLTC /* we don't need those, since POSIX has them */ 358231990Smp# undef TIOCSLTC 359231990Smp# undef CSWTCH 360231990Smp# define CSWTCH _POSIX_VDISABLE /* So job control works */ 361231990Smp# endif /* SYSVREL > 3 */ 36259243Sobrien# endif 36359243Sobrien#endif 36459243Sobrien 36559243Sobrien#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 36659243Sobrien#undef CSWTCH 36759243Sobrien#define CSWTCH _POSIX_VDISABLE 36859243Sobrien#endif 36959243Sobrien 37069408Sache#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 37159243Sobrien# include <sys/filio.h> 37259243Sobrien#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 37359243Sobrien 374167465Smp#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 37559243Sobrien# include <sys/file.h> 376167465Smp#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 37759243Sobrien 37859243Sobrien#if !defined(O_RDONLY) || !defined(O_NDELAY) 37959243Sobrien# include <fcntl.h> 38059243Sobrien#endif 38159243Sobrien 38259243Sobrien#include <errno.h> 38359243Sobrien 38459243Sobrien#include <setjmp.h> 38559243Sobrien 386167465Smp#include <stdarg.h> 38759243Sobrien 388145479Smp#ifdef HAVE_DIRENT_H 38959243Sobrien# include <dirent.h> 39059243Sobrien#else 391145479Smp# ifdef HAVE_NDIR_H 39259243Sobrien# include <ndir.h> 39359243Sobrien# else 39459243Sobrien# include <sys/dir.h> 39559243Sobrien# endif 39659243Sobrien# define dirent direct 397145479Smp#endif /* HAVE_DIRENT_H */ 398145479Smp#ifndef HAVE_STRUCT_DIRENT_D_INO 399145479Smp# define d_ino d_fileno 400145479Smp#endif 401167465Smp#if defined(hpux) || defined(sgi) || defined(OREO) 40259243Sobrien# include <stdio.h> /* So the fgetpwent() prototypes work */ 403167465Smp#endif /* hpux || sgi || OREO */ 40469408Sache#ifndef WINNT_NATIVE 40559243Sobrien#include <pwd.h> 40659243Sobrien#include <grp.h> 40769408Sache#endif /* WINNT_NATIVE */ 408145479Smp#ifdef HAVE_SHADOW_H 40959243Sobrien# include <shadow.h> 410145479Smp#endif /* HAVE_SHADOW_H */ 411145479Smp#ifdef HAVE_AUTH_H 41259243Sobrien# include <auth.h> 413145479Smp#endif /* HAVE_AUTH_H */ 41459243Sobrien#if defined(BSD) && !defined(POSIX) 41559243Sobrien# include <strings.h> 41659243Sobrien# define strchr(a, b) index(a, b) 41759243Sobrien# define strrchr(a, b) rindex(a, b) 41859243Sobrien#else 41959243Sobrien# include <string.h> 42059243Sobrien#endif /* BSD */ 42159243Sobrien 42259243Sobrien/* 42359243Sobrien * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 42459243Sobrien * include it yet, so we include it here 42559243Sobrien */ 42659243Sobrien#if defined(sgi) && SYSVREL > 3 42759243Sobrien# include <sys/cdefs.h> 42859243Sobrien#endif /* sgi && SYSVREL > 3 */ 42959243Sobrien 43059243Sobrien#ifdef REMOTEHOST 43159243Sobrien# ifdef ISC 43259243Sobrien# undef MAXHOSTNAMELEN /* Busted headers? */ 43359243Sobrien# endif 43459243Sobrien 43559243Sobrien# include <netinet/in.h> 43659243Sobrien# include <arpa/inet.h> 43759243Sobrien# include <sys/socket.h> 438145479Smp# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) 439100616Smp# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 440100616Smp# if !defined(sgi) 441316958Sdchagin# define INET6 442100616Smp# endif /* sgi */ 443100616Smp# endif /* __APPLE__ */ 44469408Sache# endif 44559243Sobrien# include <sys/uio.h> /* For struct iovec */ 44659243Sobrien#endif /* REMOTEHOST */ 44759243Sobrien 44859243Sobrien#ifdef PURIFY 44959243Sobrien/* exit normally, allowing purify to trace leaks */ 45059243Sobrien# define _exit exit 451316958Sdchagin#endif /* !PURIFY */ 45259243Sobrien 45369408Sache/* 45469408Sache * ASCII vs. EBCDIC 45569408Sache */ 45669408Sache#if 'Z' - 'A' == 25 45769408Sache# ifndef IS_ASCII 45869408Sache# define IS_ASCII 45969408Sache# endif 46069408Sache#endif 46169408Sache 46259243Sobrien#include "sh.types.h" 46359243Sobrien 464167465Smp#if !HAVE_DECL_GETPGRP 465145479Smp# ifndef GETPGRP_VOID 466167465Smpextern pid_t getpgrp (int); 467145479Smp# else 468167465Smpextern pid_t getpgrp (void); 469145479Smp# endif 470145479Smp#endif 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 490167465Smp#ifdef SYSMALLOC 491167465Smp# define xmalloc(i) smalloc(i) 492167465Smp# define xrealloc(p, i) srealloc(p, i) 493167465Smp# define xcalloc(n, s) scalloc(n, s) 494167465Smp# define xfree sfree 49559243Sobrien#else 496167465Smp# define xmalloc(i) malloc(i) 497167465Smp# define xrealloc(p, i) realloc(p, i) 498167465Smp# define xcalloc(n, s) calloc(n, s) 499167465Smp# define xfree free 500167465Smp#endif /* SYSMALLOC */ 50159243Sobrien#include "sh.char.h" 50259243Sobrien#include "sh.err.h" 50359243Sobrien#include "sh.dir.h" 50459243Sobrien#include "sh.proc.h" 50559243Sobrien 50659243Sobrien#include "pathnames.h" 50759243Sobrien 50859243Sobrien 50959243Sobrien/* 51059243Sobrien * C shell 51159243Sobrien * 51259243Sobrien * Bill Joy, UC Berkeley 51359243Sobrien * October, 1978; May 1980 51459243Sobrien * 51559243Sobrien * Jim Kulp, IIASA, Laxenburg Austria 51659243Sobrien * April, 1980 51759243Sobrien */ 51859243Sobrien 51959243Sobrien#ifdef HESIOD 52059243Sobrien# include <hesiod.h> 52159243Sobrien#endif /* HESIOD */ 52259243Sobrien 52359243Sobrien#ifdef REMOTEHOST 52459243Sobrien# include <netdb.h> 52559243Sobrien#endif /* REMOTEHOST */ 52659243Sobrien 52759243Sobrien#ifndef MAXHOSTNAMELEN 528167465Smp# ifdef HOST_NAME_MAX 529167465Smp# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) 530167465Smp# elif defined(SCO) && (SYSVREL > 3) 53159243Sobrien# include <sys/socket.h> 53259243Sobrien# else 53383098Smp# define MAXHOSTNAMELEN 256 53459243Sobrien# endif 53559243Sobrien#endif /* MAXHOSTNAMELEN */ 53659243Sobrien 53759243Sobrien 53859243Sobrien 53959243Sobrien#define eq(a, b) (Strcmp(a, b) == 0) 54059243Sobrien 54159243Sobrien/* globone() flags */ 54259243Sobrien#define G_ERROR 0 /* default action: error if multiple words */ 54359243Sobrien#define G_IGNORE 1 /* ignore the rest of the words */ 54459243Sobrien#define G_APPEND 2 /* make a sentence by cat'ing the words */ 54559243Sobrien 54659243Sobrien/* 54759243Sobrien * Global flags 54859243Sobrien */ 549145479SmpEXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ 55059243Sobrien 55159243Sobrien#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 55259243Sobrien# define CLOSE_ON_EXEC 55359243Sobrien#else 554145479SmpEXTERN int didcch IZERO; /* Have closed unused fd's for child */ 55559243Sobrien#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 55659243Sobrien 557145479SmpEXTERN int didfds IZERO; /* Have setup i/o fd's for child */ 558145479SmpEXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ 559145479SmpEXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ 560145479SmpEXTERN int child IZERO; /* Child shell ... errors cause exit */ 561145479SmpEXTERN int haderr IZERO; /* Reset was because of an error */ 562145479SmpEXTERN int intty IZERO; /* Input is a tty */ 563145479SmpEXTERN int intact IZERO; /* We are interactive... therefore prompt */ 564145479SmpEXTERN int justpr IZERO; /* Just print because of :p hist mod */ 565145479SmpEXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ 566145479SmpEXTERN int neednote IZERO; /* Need to pnotify() */ 567145479SmpEXTERN int noexec IZERO; /* Don't execute, just syntax check */ 568145479SmpEXTERN int pjobs IZERO; /* want to print jobs if interrupted */ 569145479SmpEXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 570316958SdchaginEXTERN int handle_interrupt IZERO;/* Are we currently handling an interrupt? */ 571145479SmpEXTERN int havhash IZERO; /* path hashing is available */ 572145479SmpEXTERN int editing IZERO; /* doing filename expansion and line editing */ 573145479SmpEXTERN int noediting IZERO; /* initial $term defaulted to noedit */ 574145479SmpEXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 575231990SmpEXTERN int anyerror IZERO; /* propagate errors from pipelines/backq */ 576195609SmpEXTERN int compat_expr IZERO;/* csh-style expressions? */ 577145479SmpEXTERN int isoutatty IZERO; /* is SHOUT a tty */ 578145479SmpEXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ 579145479SmpEXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 580145479SmpEXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 581145479SmpEXTERN int arun IZERO; /* Currently running multi-line-aliases */ 582316958SdchaginEXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 583316958SdchaginEXTERN int cdtohome IZERO; /* cd without args goes home */ 584145479SmpEXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ 585316958SdchaginEXTERN int no_clobber IZERO; /* no clobber enabled? 1=yes 2=notempty, 4=ask*/ 586167465Smp/* We received a window change event */ 587167465SmpEXTERN volatile sig_atomic_t windowchg IZERO; 588145479Smp#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) 589145479SmpEXTERN int dspmbyte_ls; 590145479Smp#endif 59159243Sobrien 59259243Sobrien/* 59359243Sobrien * Global i/o info 59459243Sobrien */ 59559243SobrienEXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 59659243SobrienEXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 59759243Sobrienextern Char *ffile; /* Name of shell file for $0 */ 598145479Smpextern int dolzero; /* if $?0 should return true... */ 59959243Sobrien 60059243Sobrienextern char *seterr; /* Error message from scanner/parser */ 601145479Smp#ifndef errno 60259243Sobrienextern int errno; /* Error from C library routines */ 60369408Sache#endif 60469408Sacheextern int exitset; 605167465Smp/* Temp name for << shell files in /tmp, for xfree() */ 606167465SmpEXTERN Char *shtemp IZERO; 60759243Sobrien 60859243Sobrien#ifdef BSDTIMES 60959243SobrienEXTERN struct timeval time0; /* Time at which the shell started */ 61059243SobrienEXTERN struct sysrusage ru0; 61159243Sobrien#else 61259243Sobrien# ifdef _SEQUENT_ 61359243SobrienEXTERN timeval_t time0; /* time at which shell started */ 61459243SobrienEXTERN struct process_stats ru0; 61559243Sobrien# else /* _SEQUENT_ */ 61659243Sobrien# ifndef POSIX 61759243SobrienEXTERN time_t time0; /* time at which shell started */ 61859243Sobrien# else /* POSIX */ 61959243SobrienEXTERN clock_t time0; /* time at which shell started */ 62059243SobrienEXTERN clock_t clk_tck; 62159243Sobrien# endif /* POSIX */ 62259243SobrienEXTERN struct tms shtimes; /* shell and child times for process timing */ 62359243Sobrien# endif /* _SEQUENT_ */ 624167465SmpEXTERN time_t seconds0; 62559243Sobrien#endif /* BSDTIMES */ 62659243Sobrien 62759243Sobrien#ifndef HZ 62859243Sobrien# define HZ 100 /* for division into seconds */ 62959243Sobrien#endif 63059243Sobrien 63159243Sobrien/* 63259243Sobrien * Miscellany 63359243Sobrien */ 634316958SdchaginEXTERN pid_t mainpid; /* pid of the main shell ($$) */ 63559243SobrienEXTERN Char *doldol; /* Character pid for $$ */ 636167465SmpEXTERN pid_t backpid; /* pid of the last background job */ 63759243Sobrien 638316958Sdchagin 63959243Sobrien/* 64059243Sobrien * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 64159243Sobrien * cause pid's could be unsigned and that would break our -1 flag, and 64259243Sobrien * uid_t and gid_t are not defined in all the systems so I would have to 64359243Sobrien * make special cases for them. In the future... 64459243Sobrien */ 645145479SmpEXTERN uid_t uid, euid; /* Invokers real and effective */ 646145479SmpEXTERN gid_t gid, egid; /* User and group ids */ 647145479SmpEXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ 64859243Sobrien shpgrp, /* Pgrp of shell */ 64959243Sobrien tpgrp; /* Terminal process group */ 65059243Sobrien /* If tpgrp is -1, leave tty alone! */ 65159243Sobrien 652167465SmpEXTERN Char *Prompt; /* The actual printed prompt or NULL */ 653167465SmpEXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ 65459243Sobrien 65559243Sobrien/* 65659243Sobrien * To be able to redirect i/o for builtins easily, the shell moves the i/o 65759243Sobrien * descriptors it uses away from 0,1,2. 65859243Sobrien * Ideally these should be in units which are closed across exec's 65959243Sobrien * (this saves work) but for version 6, this is not usually possible. 66059243Sobrien * The desired initial values for these descriptors are defined in 66159243Sobrien * sh.local.h. 66259243Sobrien */ 66359243SobrienEXTERN int SHIN IZERO; /* Current shell input (script) */ 66459243SobrienEXTERN int SHOUT IZERO; /* Shell output */ 66559243SobrienEXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 66659243SobrienEXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 66759243Sobrien 66859243Sobrien 669231990Smp#if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__) 67059243Sobrien/* 67159243Sobrien * From: fadden@uts.amdahl.com (Andy McFadden) 67259243Sobrien * we need sigsetjmp for UTS4, but not UTS2.1 67359243Sobrien */ 67459243Sobrien# define SIGSETJMP 67559243Sobrien#endif 67659243Sobrien 67759243Sobrien/* 67859243Sobrien * Error control 67959243Sobrien * 68059243Sobrien * Errors in scanning and parsing set up an error message to be printed 68159243Sobrien * at the end and complete. Other errors always cause a reset. 68259243Sobrien * Because of source commands and .cshrc we need nested error catches. 68359243Sobrien */ 68459243Sobrien 685167465Smp#ifdef SIGSETJMP 686167465Smp typedef struct { sigjmp_buf j; } jmp_buf_t; 687231990Smp# define setexit() sigsetjmp(reslab.j, 1) 688167465Smp# define _reset() siglongjmp(reslab.j, 1) 68959243Sobrien#else 69059243Sobrien typedef struct { jmp_buf j; } jmp_buf_t; 691167465Smp# define setexit() setjmp(reslab.j) 692167465Smp# define _reset() longjmp(reslab.j, 1) 693167465Smp#endif 69459243Sobrien 695167465Smp#define getexit(a) (void) ((a) = reslab) 696167465Smp#define resexit(a) (void) (reslab = (a)) 69759243Sobrien 698167465Smp#define cpybin(a, b) (void) ((a) = (b)) 69959243Sobrien 70059243Sobrienextern jmp_buf_t reslab; 70159243Sobrien 70259243SobrienEXTERN Char *gointr; /* Label for an onintr transfer */ 70359243Sobrien 704167465Smpextern struct sigaction parintr; /* Parents interrupt catch */ 705167465Smpextern struct sigaction parterm; /* Parents terminate catch */ 70659243Sobrien 70759243Sobrien/* 70859243Sobrien * Lexical definitions. 70959243Sobrien * 71059243Sobrien * All lexical space is allocated dynamically. 71159243Sobrien * The eighth/sixteenth bit of characters is used to prevent recognition, 71259243Sobrien * and eventually stripped. 71359243Sobrien */ 71459243Sobrien#define META 0200 71559243Sobrien#define ASCII 0177 716145479Smp#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ 717145479Smp/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ 718316958Sdchagin/* 719316958Sdchagin * Notice 720316958Sdchagin * 721316958Sdchagin * By fix for handling unicode name file, 32nd bit is used. 722316958Sdchagin * We need use '&' instead of '> or <' when comparing with INVALID_BYTE etc.. 723316958Sdchagin * Cast to uChar is not recommended, 724316958Sdchagin * becase Char is 4bytes but uChar is 8bytes on I32LP64. */ 725316958Sdchagin# define QUOTE 0x80000000 726316958Sdchagin# define TRIM 0x7FFFFFFF /* Mask to strip quote bit */ 727195609Smp# define UNDER 0x08000000 /* Underline flag */ 728195609Smp# define BOLD 0x04000000 /* Bold flag */ 729195609Smp# define STANDOUT 0x02000000 /* Standout flag */ 730195609Smp# define LITERAL 0x01000000 /* Literal character flag */ 731195609Smp# define ATTRIBUTES 0x0F000000 /* The bits used for attributes */ 732316958Sdchagin# define INVALID_BYTE 0xF0000000 /* Invalid character on input */ 733195609Smp# ifdef SOLARIS2 734195609Smp# define CHAR 0x30FFFFFF /* Mask to mask out the character */ 735195609Smp# else 736195609Smp# define CHAR 0x00FFFFFF /* Mask to mask out the character */ 737195609Smp# endif 738145479Smp#elif defined (SHORT_STRINGS) 73959243Sobrien# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 740145479Smp# define TRIM 0073777 /* Mask to strip quote/lit bit */ 74159243Sobrien# define UNDER 0040000 /* Underline flag */ 74259243Sobrien# define BOLD 0020000 /* Bold flag */ 74359243Sobrien# define STANDOUT 0010000 /* Standout flag */ 74459243Sobrien# define LITERAL 0004000 /* Literal character flag */ 74559243Sobrien# define ATTRIBUTES 0074000 /* The bits used for attributes */ 746145479Smp# define INVALID_BYTE 0 74759243Sobrien# define CHAR 0000377 /* Mask to mask out the character */ 74859243Sobrien#else 74959243Sobrien# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 75059243Sobrien# define TRIM 0177 /* Mask to strip quote bit */ 75159243Sobrien# define UNDER 0000000 /* No extra bits to do both */ 75259243Sobrien# define BOLD 0000000 /* Bold flag */ 75359243Sobrien# define STANDOUT META /* Standout flag */ 75459243Sobrien# define LITERAL 0000000 /* Literal character flag */ 75559243Sobrien# define ATTRIBUTES 0200 /* The bits used for attributes */ 756145479Smp# define INVALID_BYTE 0 75759243Sobrien# define CHAR 0000177 /* Mask to mask out the character */ 758167465Smp#endif 759145479Smp#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) 76059243Sobrien 761316958Sdchagin# define MAX_UTF32 0x7FFFFFFF /* max UTF32 is U+7FFFFFFF */ 762316958Sdchagin 76359243SobrienEXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 76459243Sobrien 76559243Sobrien/* 76659243Sobrien * Each level of input has a buffered input structure. 76759243Sobrien * There are one or more blocks of buffered input for each level, 76859243Sobrien * exactly one if the input is seekable and tell is available. 76959243Sobrien * In other cases, the shell buffers enough blocks to keep all loops 77059243Sobrien * in the buffer. 771167465Smp * 772167465Smp * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but 773167465Smp * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for 774167465Smp * fbuf indexing). 775167465Smp * 776167465Smp * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there 777167465Smp * is no difference between byte and character offsets. 77859243Sobrien */ 77959243SobrienEXTERN struct Bin { 780145479Smp off_t Bfseekp; /* Seek pointer, generally != lseek() value */ 78159243Sobrien off_t Bfbobp; /* Seekp of beginning of buffers */ 78259243Sobrien off_t Bfeobp; /* Seekp of end of buffers */ 78359243Sobrien int Bfblocks; /* Number of buffer blocks */ 78459243Sobrien Char **Bfbuf; /* The array of buffer blocks */ 785145479Smp#ifdef WIDE_STRINGS 786145479Smp /* Number of bytes in each character if (cantell) */ 787145479Smp unsigned char Bfclens[BUFSIZE + 1]; 788145479Smp#endif 78959243Sobrien} B; 79059243Sobrien 79159243Sobrien/* 79259243Sobrien * This structure allows us to seek inside aliases 79359243Sobrien */ 79459243Sobrienstruct Ain { 79559243Sobrien int type; 79669408Sache#define TCSH_I_SEEK 0 /* Invalid seek */ 79769408Sache#define TCSH_A_SEEK 1 /* Alias seek */ 79869408Sache#define TCSH_F_SEEK 2 /* File seek */ 79969408Sache#define TCSH_E_SEEK 3 /* Eval seek */ 80059243Sobrien union { 801167465Smp off_t _f_seek; /* A byte offset if (cantell) */ 80259243Sobrien Char* _c_seek; 80359243Sobrien } fc; 80459243Sobrien#define f_seek fc._f_seek 80559243Sobrien#define c_seek fc._c_seek 80659243Sobrien Char **a_seek; 80759243Sobrien} ; 80859243Sobrien 80959243Sobrienextern int aret; /* Type of last char returned */ 81059243Sobrien#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 81159243Sobrien (a)->f_seek == (b)->f_seek && \ 81259243Sobrien (a)->a_seek == (b)->a_seek) 81359243Sobrien 81459243Sobrien#define fseekp B.Bfseekp 81559243Sobrien#define fbobp B.Bfbobp 81659243Sobrien#define feobp B.Bfeobp 81759243Sobrien#define fblocks B.Bfblocks 81859243Sobrien#define fbuf B.Bfbuf 819145479Smp#define fclens B.Bfclens 82059243Sobrien 82159243Sobrien/* 82259243Sobrien * The shell finds commands in loops by reseeking the input 82359243Sobrien * For whiles, in particular, it reseeks to the beginning of the 82459243Sobrien * line the while was on; hence the while placement restrictions. 82559243Sobrien */ 82659243SobrienEXTERN struct Ain lineloc; 82759243Sobrien 828145479SmpEXTERN int cantell; /* Is current source tellable ? */ 82959243Sobrien 83059243Sobrien/* 83159243Sobrien * Input lines are parsed into doubly linked circular 83259243Sobrien * lists of words of the following form. 83359243Sobrien */ 83459243Sobrienstruct wordent { 83559243Sobrien Char *word; 83659243Sobrien struct wordent *prev; 83759243Sobrien struct wordent *next; 83859243Sobrien}; 83959243Sobrien 84059243Sobrien/* 84159243Sobrien * During word building, both in the initial lexical phase and 84259243Sobrien * when expanding $ variable substitutions, expansion by `!' and `$' 84359243Sobrien * must be inhibited when reading ahead in routines which are themselves 84459243Sobrien * processing `!' and `$' expansion or after characters such as `\' or in 84559243Sobrien * quotations. The following flags are passed to the getC routines 84659243Sobrien * telling them which of these substitutions are appropriate for the 84759243Sobrien * next character to be returned. 84859243Sobrien */ 84959243Sobrien#define DODOL 1 85059243Sobrien#define DOEXCL 2 85159243Sobrien#define DOALL DODOL|DOEXCL 85259243Sobrien 85359243Sobrien/* 85459243Sobrien * Labuf implements a general buffer for lookahead during lexical operations. 85559243Sobrien * Text which is to be placed in the input stream can be stuck here. 85659243Sobrien * We stick parsed ahead $ constructs during initial input, 85759243Sobrien * process id's from `$$', and modified variable values (from qualifiers 85859243Sobrien * during expansion in sh.dol.c) here. 85959243Sobrien */ 860167465Smpextern struct Strbuf labuf; 861167465SmpEXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ 86259243Sobrien 86359243Sobrien/* 86459243Sobrien * Parser structure 86559243Sobrien * 86659243Sobrien * Each command is parsed to a tree of command structures and 86759243Sobrien * flags are set bottom up during this process, to be propagated down 86859243Sobrien * as needed during the semantics/exeuction pass (sh.sem.c). 86959243Sobrien */ 87059243Sobrienstruct command { 87159243Sobrien unsigned char t_dtyp; /* Type of node */ 87259243Sobrien#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 87359243Sobrien#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 87459243Sobrien#define NODE_PIPE 3 /* t_dlef | t_drit */ 87559243Sobrien#define NODE_LIST 4 /* t_dlef ; t_drit */ 87659243Sobrien#define NODE_OR 5 /* t_dlef || t_drit */ 87759243Sobrien#define NODE_AND 6 /* t_dlef && t_drit */ 87859243Sobrien unsigned char t_nice; /* Nice value */ 87959243Sobrien#ifdef apollo 88059243Sobrien unsigned char t_systype; /* System environment */ 88159243Sobrien#endif 88259243Sobrien unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 88359243Sobrien/* save these when re-doing */ 88459243Sobrien#ifndef apollo 88559243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 88659243Sobrien#else 88759243Sobrien#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 88859243Sobrien#endif 88959243Sobrien#define F_AMPERSAND (1<<0) /* executes in background */ 89059243Sobrien#define F_APPEND (1<<1) /* output is redirected >> */ 89159243Sobrien#define F_PIPEIN (1<<2) /* input is a pipe */ 89259243Sobrien#define F_PIPEOUT (1<<3) /* output is a pipe */ 89359243Sobrien#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 89459243Sobrien#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 89559243Sobrien/* spare */ 89659243Sobrien#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 89759243Sobrien#define F_OVERWRITE (1<<8) /* output was ! */ 89859243Sobrien#define F_READ (1<<9) /* input redirection is << */ 89959243Sobrien#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 90059243Sobrien#define F_NICE (1<<11) /* t_nice is meaningful */ 90159243Sobrien#define F_NOHUP (1<<12) /* nohup this command */ 90259243Sobrien#define F_TIME (1<<13) /* time this command */ 90359243Sobrien#define F_BACKQ (1<<14) /* command is in `` */ 90459243Sobrien#define F_HUP (1<<15) /* hup this command */ 90559243Sobrien#ifdef apollo 90659243Sobrien#define F_VER (1<<16) /* execute command under SYSTYPE */ 90759243Sobrien#endif 90859243Sobrien union { 90959243Sobrien Char *T_dlef; /* Input redirect word */ 91059243Sobrien struct command *T_dcar; /* Left part of list/pipe */ 91159243Sobrien } L; 91259243Sobrien union { 91359243Sobrien Char *T_drit; /* Output redirect word */ 91459243Sobrien struct command *T_dcdr; /* Right part of list/pipe */ 91559243Sobrien } R; 91659243Sobrien#define t_dlef L.T_dlef 91759243Sobrien#define t_dcar L.T_dcar 91859243Sobrien#define t_drit R.T_drit 91959243Sobrien#define t_dcdr R.T_dcdr 92059243Sobrien Char **t_dcom; /* Command/argument vector */ 92159243Sobrien struct command *t_dspr; /* Pointer to ()'d subtree */ 92259243Sobrien}; 92359243Sobrien 92459243Sobrien 92559243Sobrien/* 92659243Sobrien * The keywords for the parser 92759243Sobrien */ 92859243Sobrien#define TC_BREAK 0 92959243Sobrien#define TC_BRKSW 1 93059243Sobrien#define TC_CASE 2 93159243Sobrien#define TC_DEFAULT 3 93259243Sobrien#define TC_ELSE 4 93359243Sobrien#define TC_END 5 93459243Sobrien#define TC_ENDIF 6 93559243Sobrien#define TC_ENDSW 7 93659243Sobrien#define TC_EXIT 8 93759243Sobrien#define TC_FOREACH 9 93859243Sobrien#define TC_GOTO 10 93959243Sobrien#define TC_IF 11 94059243Sobrien#define TC_LABEL 12 94159243Sobrien#define TC_LET 13 94259243Sobrien#define TC_SET 14 94359243Sobrien#define TC_SWITCH 15 94459243Sobrien#define TC_TEST 16 94559243Sobrien#define TC_THEN 17 94659243Sobrien#define TC_WHILE 18 94759243Sobrien 94859243Sobrien/* 94959243Sobrien * These are declared here because they want to be 95059243Sobrien * initialized in sh.init.c (to allow them to be made readonly) 95159243Sobrien */ 95259243Sobrien 95359243Sobrien#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 95459243Sobrien /* Avoid hpux ansi mode spurious warnings */ 95559243Sobrientypedef void (*bfunc_t) (); 95659243Sobrien#else 957167465Smptypedef void (*bfunc_t) (Char **, struct command *); 95859243Sobrien#endif /* hpux && __STDC__ && !__GNUC__ */ 95959243Sobrien 960167465Smpextern const struct biltins { 961145479Smp const char *bname; 96259243Sobrien bfunc_t bfunct; 96359243Sobrien int minargs, maxargs; 96459243Sobrien} bfunc[]; 96559243Sobrienextern int nbfunc; 96669408Sache#ifdef WINNT_NATIVE 96759243Sobrienextern struct biltins nt_bfunc[]; 96859243Sobrienextern int nt_nbfunc; 96969408Sache#endif /* WINNT_NATIVE*/ 970145479Smpextern int bequiet; 97159243Sobrien 97259243Sobrienextern struct srch { 973145479Smp const char *s_name; 974145479Smp int s_value; 975145479Smp} srchn[]; 97659243Sobrienextern int nsrchn; 97759243Sobrien 97859243Sobrien/* 97959243Sobrien * Structure defining the existing while/foreach loops at this 98059243Sobrien * source level. Loops are implemented by seeking back in the 98159243Sobrien * input. For foreach (fe), the word list is attached here. 98259243Sobrien */ 98359243SobrienEXTERN struct whyle { 98459243Sobrien struct Ain w_start; /* Point to restart loop */ 98559243Sobrien struct Ain w_end; /* End of loop (0 if unknown) */ 98659243Sobrien Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 98759243Sobrien Char *w_fename; /* Name for fe */ 98859243Sobrien struct whyle *w_next; /* Next (more outer) loop */ 98959243Sobrien} *whyles; 99059243Sobrien 99159243Sobrien/* 99259243Sobrien * Variable structure 99359243Sobrien * 99459243Sobrien * Aliases and variables are stored in AVL balanced binary trees. 99559243Sobrien */ 99659243SobrienEXTERN struct varent { 99759243Sobrien Char **vec; /* Array of words which is the value */ 99859243Sobrien Char *v_name; /* Name of variable/alias */ 99959243Sobrien int v_flags; /* Flags */ 100059243Sobrien#define VAR_ALL -1 100159243Sobrien#define VAR_READONLY 1 100259243Sobrien#define VAR_READWRITE 2 100359243Sobrien#define VAR_NOGLOB 4 100459243Sobrien#define VAR_FIRST 32 100559243Sobrien#define VAR_LAST 64 100659243Sobrien struct varent *v_link[3]; /* The links, see below */ 100759243Sobrien int v_bal; /* Balance factor */ 100859243Sobrien} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 100959243Sobrien 101059243Sobrien#define v_left v_link[0] 101159243Sobrien#define v_right v_link[1] 101259243Sobrien#define v_parent v_link[2] 101359243Sobrien 101459243Sobrien#define adrof(v) adrof1(v, &shvhed) 101559243Sobrien#define varval(v) value1(v, &shvhed) 101659243Sobrien 101759243Sobrien/* 101859243Sobrien * The following are for interfacing redo substitution in 101959243Sobrien * aliases to the lexical routines. 102059243Sobrien */ 102159243SobrienEXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 102259243SobrienEXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 102359243SobrienEXTERN Char **alvec IZERO_STRUCT, 102459243Sobrien *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 102559243Sobrien 102659243Sobrien/* 102759243Sobrien * Filename/command name expansion variables 102859243Sobrien */ 102959243Sobrien 103059243Sobrien#ifndef MAXPATHLEN 1031167465Smp# ifdef PATH_MAX 1032167465Smp# define MAXPATHLEN PATH_MAX 1033167465Smp# else 1034167465Smp# define MAXPATHLEN 2048 1035167465Smp# endif 103659243Sobrien#endif /* MAXPATHLEN */ 103759243Sobrien 103859243Sobrien#ifndef HAVENOLIMIT 103959243Sobrien/* 104059243Sobrien * resource limits 104159243Sobrien */ 104259243Sobrienextern struct limits { 1043145479Smp int limconst; 1044145479Smp const char *limname; 1045145479Smp int limdiv; 1046145479Smp const char *limscale; 104759243Sobrien} limits[]; 104859243Sobrien#endif /* !HAVENOLIMIT */ 104959243Sobrien 105059243Sobrien/* 105159243Sobrien * History list 105259243Sobrien * 105359243Sobrien * Each history list entry contains an embedded wordlist 105459243Sobrien * from the scanner, a number for the event, and a reference count 105559243Sobrien * to aid in discarding old entries. 105659243Sobrien * 105759243Sobrien * Essentially "invisible" entries are put on the history list 105859243Sobrien * when history substitution includes modifiers, and thrown away 105959243Sobrien * at the next discarding since their event numbers are very negative. 106059243Sobrien */ 106159243SobrienEXTERN struct Hist { 106259243Sobrien struct wordent Hlex; 1063231990Smp int Hnum; /* eventno when inserted into history list */ 106459243Sobrien int Href; 106559243Sobrien time_t Htime; 106659243Sobrien Char *histline; 1067231990Smp struct Hist *Hnext, *Hprev; /* doubly linked list */ 1068231990Smp unsigned Hhash; /* hash value of command line */ 106959243Sobrien} Histlist IZERO_STRUCT; 107059243Sobrien 1071316958Sdchaginextern struct wordent paraml; /* Current lexical word list */ 107259243SobrienEXTERN int eventno; /* Next events number */ 107359243SobrienEXTERN int lastev; /* Last event reference (default) */ 107459243Sobrien 107559243SobrienEXTERN Char HIST; /* history invocation character */ 107659243SobrienEXTERN Char HISTSUB; /* auto-substitute character */ 107759243SobrienEXTERN Char PRCH; /* Prompt symbol for regular users */ 107859243SobrienEXTERN Char PRCHROOT; /* Prompt symbol for root */ 107959243Sobrien 108059243Sobrien/* 108159243Sobrien * For operating systems with single case filenames (OS/2) 108259243Sobrien */ 108359243Sobrien#ifdef CASE_INSENSITIVE 1084145479Smp# ifdef WIDE_STRINGS 1085145479Smp# define samecase(x) (towlower(x)) 1086145479Smp# else 1087145479Smp# define samecase(x) (isupper((unsigned char)(x)) ? \ 1088145479Smp tolower((unsigned char)(x)) : (x)) 1089145479Smp# endif 109059243Sobrien#else 109159243Sobrien# define samecase(x) (x) 109259243Sobrien#endif /* CASE_INSENSITIVE */ 109359243Sobrien 109459243Sobrien/* 109559243Sobrien * strings.h: 109659243Sobrien */ 109759243Sobrien#ifndef SHORT_STRINGS 109859243Sobrien#define Strchr(a, b) strchr(a, b) 109959243Sobrien#define Strrchr(a, b) strrchr(a, b) 110059243Sobrien#define Strcat(a, b) strcat(a, b) 110159243Sobrien#define Strncat(a, b, c) strncat(a, b, c) 110259243Sobrien#define Strcpy(a, b) strcpy(a, b) 110359243Sobrien#define Strncpy(a, b, c) strncpy(a, b, c) 110459243Sobrien#define Strlen(a) strlen(a) 110559243Sobrien#define Strcmp(a, b) strcmp(a, b) 110659243Sobrien#define Strncmp(a, b, c) strncmp(a, b, c) 1107131962Smp#define Strcasecmp(a, b) strcasecmp(a, b) 110859243Sobrien 110959243Sobrien#define Strspl(a, b) strspl(a, b) 1110167465Smp#define Strnsave(a, b) strnsave(a, b) 111159243Sobrien#define Strsave(a) strsave(a) 111259243Sobrien#define Strend(a) strend(a) 111359243Sobrien#define Strstr(a, b) strstr(a, b) 111459243Sobrien 111559243Sobrien#define str2short(a) (a) 111659243Sobrien#define blk2short(a) saveblk(a) 111759243Sobrien#define short2blk(a) saveblk(a) 1118167465Smp#define short2str(a) caching_strip(a) 111959243Sobrien#else 1120231990Smp#if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS) 1121145479Smp#define Strchr(a, b) wcschr(a, b) 1122145479Smp#define Strrchr(a, b) wcsrchr(a, b) 1123145479Smp#define Strcat(a, b) wcscat(a, b) 1124145479Smp#define Strncat(a, b, c) wcsncat(a, b, c) 1125145479Smp#define Strcpy(a, b) wcscpy(a, b) 1126145479Smp#define Strncpy(a, b, c) wcsncpy(a, b, c) 1127145479Smp#define Strlen(a) wcslen(a) 1128145479Smp#define Strcmp(a, b) wcscmp(a, b) 1129145479Smp#define Strncmp(a, b, c) wcsncmp(a, b, c) 1130145479Smp#else 113159243Sobrien#define Strchr(a, b) s_strchr(a, b) 113259243Sobrien#define Strrchr(a, b) s_strrchr(a, b) 113359243Sobrien#define Strcat(a, b) s_strcat(a, b) 113459243Sobrien#define Strncat(a, b, c) s_strncat(a, b, c) 113559243Sobrien#define Strcpy(a, b) s_strcpy(a, b) 113659243Sobrien#define Strncpy(a, b, c) s_strncpy(a, b, c) 113759243Sobrien#define Strlen(a) s_strlen(a) 113859243Sobrien#define Strcmp(a, b) s_strcmp(a, b) 113959243Sobrien#define Strncmp(a, b, c) s_strncmp(a, b, c) 1140145479Smp#endif 1141131962Smp#define Strcasecmp(a, b) s_strcasecmp(a, b) 114259243Sobrien 114359243Sobrien#define Strspl(a, b) s_strspl(a, b) 1144167465Smp#define Strnsave(a, b) s_strnsave(a, b) 114559243Sobrien#define Strsave(a) s_strsave(a) 114659243Sobrien#define Strend(a) s_strend(a) 114759243Sobrien#define Strstr(a, b) s_strstr(a, b) 114859243Sobrien#endif 114959243Sobrien 115059243Sobrien/* 115159243Sobrien * setname is a macro to save space (see sh.err.c) 115259243Sobrien */ 1153145479SmpEXTERN const char *bname; 115459243Sobrien 115559243Sobrien#define setname(a) (bname = (a)) 115659243Sobrien 115759243Sobrien#ifdef VFORK 115859243SobrienEXTERN Char *Vsav; 115959243SobrienEXTERN Char *Vdp; 116059243SobrienEXTERN Char *Vexpath; 116159243SobrienEXTERN char **Vt; 116259243Sobrien#endif /* VFORK */ 116359243Sobrien 116459243SobrienEXTERN Char **evalvec; 116559243SobrienEXTERN Char *evalp; 116659243Sobrien 116759243Sobrienextern struct mesg { 1168145479Smp const char *iname; /* name from /usr/include */ 1169145479Smp const char *pname; /* print name */ 1170145479Smp} mesg[]; 117159243Sobrien 1172316958Sdchagin/* word_chars is set by default to WORD_CHARS (or WORD_CHARS_VI) but can 1173316958Sdchagin be overridden by the wordchars variable--if unset, reverts to 1174316958Sdchagin WORD_CHARS (or WORD_CHARS_VI) */ 117559243Sobrien 117659243SobrienEXTERN Char *word_chars; 117759243Sobrien 117859243Sobrien#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 1179316958Sdchagin#define WORD_CHARS_VI "_" /* default chars besides alnums in words */ 118059243Sobrien 118159243SobrienEXTERN Char *STR_SHELLPATH; 118259243Sobrien 118359243Sobrien#ifdef _PATH_BSHELL 118459243SobrienEXTERN Char *STR_BSHELL; 118559243Sobrien#endif 118659243SobrienEXTERN Char *STR_WORD_CHARS; 1187316958SdchaginEXTERN Char *STR_WORD_CHARS_VI; 118859243SobrienEXTERN Char **STR_environ IZERO; 118959243Sobrien 119059243Sobrienextern int dont_free; /* Tell free that we are in danger if we free */ 119159243Sobrien 119259243Sobrienextern Char *INVPTR; 119359243Sobrienextern Char **INVPPTR; 119459243Sobrien 119559243Sobrienextern char *progname; 119659243Sobrienextern int tcsh; 1197145479Smpextern int xlate_cr; 1198145479Smpextern int output_raw; 1199145479Smpextern int lbuffed; 1200145479Smpextern time_t Htime; 1201145479Smpextern int numeof; 1202145479Smpextern int insource; 1203145479Smpextern char linbuf[]; 1204145479Smpextern char *linp; 1205145479Smpextern int nsig; 1206145479Smp#ifdef VFORK 1207145479Smpextern int use_fork; 1208145479Smp#endif 1209145479Smpextern int tellwhat; 1210145479Smpextern int NoNLSRebind; 1211167465Smp#if !HAVE_DECL_ENVIRON 1212167465Smpextern char **environ; 1213167465Smp#endif 121459243Sobrien 121559243Sobrien#include "tc.h" 121659243Sobrien 121769408Sache#ifndef WINNT_NATIVE 121859243Sobrien# ifdef NLS_CATALOGS 1219231990Smp# ifdef HAVE_FEATURES_H 122059243Sobrien# include <features.h> 122159243Sobrien# endif 1222231990Smp# ifdef HAVE_NL_LANGINFO 1223231990Smp# include <langinfo.h> 122459243Sobrien# endif 1225231990Smp# ifdef __uxps__ 1226231990Smp# define gettxt gettxt_ds 122759243Sobrien# endif 1228231990Smp# include <nl_types.h> 1229231990Smp# ifdef __uxps__ 1230231990Smp# undef gettxt 1231231990Smp# endif 123259243SobrienEXTERN nl_catd catd; 1233167465Smp# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) 1234145479Smp# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) 1235145479Smp# else 1236167465Smp# define CGETS(b, c, d) xcatgets(catd, b, c, d) 1237145479Smp# endif 123859243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 123959243Sobrien# else 124059243Sobrien# define CGETS(b, c, d) d 124159243Sobrien# define CSAVS(b, c, d) d 124259243Sobrien# endif 124369408Sache#else /* WINNT_NATIVE */ 124459243Sobrien# define CGETS(b, c, d) nt_cgets( b, c, d) 124559243Sobrien# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 124669408Sache#endif /* WINNT_NATIVE */ 124759243Sobrien 1248131962Smp#if defined(FILEC) 1249145479Smpextern int filec; 1250131962Smp#endif /* FILEC */ 1251131962Smp 1252145479Smp#include "sh.decls.h" 125359243Sobrien/* 125459243Sobrien * Since on some machines characters are unsigned, and the signed 125559243Sobrien * keyword is not universally implemented, we treat all characters 125659243Sobrien * as unsigned and sign extend them where we need. 125759243Sobrien */ 125859243Sobrien#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 125959243Sobrien 1260145479Smp/* 1261145479Smp * explanation for use by the "--help" option 1262145479Smp */ 1263145479Smp#define HELP_STRING "\ 1264145479Smp-b file batch mode, read and execute commands from `file' \n\ 1265145479Smp-c command run `command' from next argument \n\ 1266145479Smp-d load directory stack from `~/.cshdirs' \n\ 1267145479Smp-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ 1268145479Smp-e exit on any error \n\ 1269145479Smp-f start faster by ignoring the start-up file \n\ 1270145479Smp-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ 1271145479Smp-i interactive, even when input is not from a terminal \n\ 1272145479Smp-l act as a login shell, must be the only option specified \n\ 1273145479Smp-m load the start-up file, whether or not owned by effective user \n\ 1274145479Smp-n file no execute mode, just check syntax of the following `file' \n\ 1275145479Smp-q accept SIGQUIT for running under a debugger \n\ 1276145479Smp-s read commands from standard input \n\ 1277145479Smp-t read one line from standard input \n\ 1278145479Smp-v echo commands after history substitution \n\ 1279145479Smp-V like -v but including commands read from the start-up file \n\ 1280145479Smp-x echo commands immediately before execution \n\ 1281145479Smp-X like -x but including commands read from the start-up file \n\ 1282145479Smp--help print this message and exit \n\ 1283145479Smp--version print the version shell variable and exit \n\ 1284145479Smp\nSee the tcsh(1) manual page for detailed information.\n" 1285145479Smp 1286145479Smp#include "tc.nls.h" 1287145479Smp 128859243Sobrien#endif /* _h_sh */ 1289