sh.h revision 302408
1/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.165 2011/04/14 18:25:25 christos Exp $ */ 2/* 3 * sh.h: Catch it all globals and includes file! 4 */ 5/*- 6 * Copyright (c) 1980, 1991 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33#ifndef _h_sh 34#define _h_sh 35 36#include "config.h" 37 38#include <stddef.h> 39#include <signal.h> 40 41#ifdef HAVE_ICONV 42# include <iconv.h> 43#endif 44 45#ifdef HAVE_STDINT_H 46# include <stdint.h> 47#endif 48 49#ifdef HAVE_INTTYPES_H 50# include <inttypes.h> 51#endif 52 53#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE) 54typedef unsigned long intptr_t; 55#endif 56 57#ifndef EXTERN 58# define EXTERN extern 59#else /* !EXTERN */ 60# ifdef WINNT_NATIVE 61# define IZERO = 0 62# define IZERO_STRUCT = {0} 63# endif /* WINNT_NATIVE */ 64#endif /* EXTERN */ 65 66#ifndef IZERO 67# define IZERO 68#endif /* IZERO */ 69#ifndef IZERO_STRUCT 70# define IZERO_STRUCT 71#endif /* IZERO_STRUCT */ 72 73#ifndef WINNT_NATIVE 74# define INIT_ZERO 75# define INIT_ZERO_STRUCT 76# define force_read xread 77#endif /*!WINNT_NATIVE */ 78 79#if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET) 80#define AUTOSET_KANJI 81#endif 82/* 83 * Sanity 84 */ 85#if defined(_POSIX_SOURCE) && !defined(POSIX) 86# define POSIX 87#endif 88 89#if defined(POSIXJOBS) && !defined(BSDJOBS) 90# define BSDJOBS 91#endif 92 93#define TMP_TEMPLATE ".XXXXXX" 94 95#ifdef SHORT_STRINGS 96# ifdef WIDE_STRINGS 97#include <wchar.h> 98# ifdef UTF16_STRINGS 99typedef wint_t Char; 100# else 101typedef wchar_t Char; 102#endif 103typedef unsigned long uChar; 104typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */ 105#define CHAR_ERR WEOF /* Pretty please, use bit 31... */ 106#define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N) 107#define reset_mbtowc() TCSH_IGNORE(mbtowc(NULL, NULL, 0)) 108# else 109typedef short Char; 110typedef unsigned short uChar; 111typedef int eChar; 112#define CHAR_ERR (-1) 113#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 114#define reset_mbtowc() ((void)0) 115# endif 116# define SAVE(a) (Strsave(str2short(a))) 117#else 118typedef char Char; 119typedef unsigned char uChar; 120typedef int eChar; 121#define CHAR_ERR (-1) 122#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 123#define reset_mbtowc() ((void)0) 124# define SAVE(a) (strsave(a)) 125#endif 126 127#if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER) 128#define __inline 129#endif 130/* Elide unused argument warnings */ 131#define USE(a) (void) (a) 132#define TCSH_IGNORE(a) tcsh_ignore((intptr_t)a) 133static __inline void tcsh_ignore(intptr_t a) 134{ 135 USE(a); 136} 137 138/* 139 * Return true if the path is absolute 140 */ 141#if defined(WINNT_NATIVE) 142# define ABSOLUTEP(p) ((p)[0] == '/' || \ 143 (Isalpha((p)[0]) && (p)[1] == ':')) 144#elif defined(__CYGWIN__) 145# define ABSOLUTEP(p) ((p)[0] == '/' || \ 146 (Isalpha((p)[0]) && (p)[1] == ':' && \ 147 ((p)[2] == '\0' || (p)[2] == '/'))) 148#else /* !WINNT_NATIVE && !__CYGWIN__ */ 149# define ABSOLUTEP(p) (*(p) == '/') 150#endif /* WINNT_NATIVE || __CYGWIN__ */ 151 152/* 153 * Fundamental definitions which may vary from system to system. 154 * 155 * BUFSIZE The i/o buffering size; also limits word size 156 * MAILINTVL How often to mailcheck; more often is more expensive 157 */ 158#ifdef BUFSIZE 159# if BUFSIZE < 4096 160# undef BUFSIZE 161# define BUFSIZE 4096 /* buffer size should be no less than this */ 162# endif 163#else 164# define BUFSIZE 4096 165#endif /* BUFSIZE */ 166 167#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 168#define MAILINTVL 600 /* 10 minutes */ 169 170#ifndef INBUFSIZE 171# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 172#endif /* INBUFSIZE */ 173 174 175/* 176 * What our builtin echo looks like 177 */ 178#define NONE_ECHO 0 179#define BSD_ECHO 1 180#define SYSV_ECHO 2 181#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 182 183#ifndef ECHO_STYLE 184# if SYSVREL > 0 185# define ECHO_STYLE SYSV_ECHO 186# else /* SYSVREL == 0 */ 187# define ECHO_STYLE BSD_ECHO 188# endif /* SYSVREL */ 189#endif /* ECHO_STYLE */ 190 191/* 192 * The shell moves std in/out/diag and the old std input away from units 193 * 0, 1, and 2 so that it is easy to set up these standards for invoked 194 * commands. 195 */ 196#define FSAFE 5 /* We keep the first 5 descriptors untouched */ 197#define FSHTTY 15 /* /dev/tty when manip pgrps */ 198#define FSHIN 16 /* Preferred desc for shell input */ 199#define FSHOUT 17 /* ... shell output */ 200#define FSHDIAG 18 /* ... shell diagnostics */ 201#define FOLDSTD 19 /* ... old std input */ 202 203#ifdef PROF 204#define xexit(n) done(n) 205#endif 206 207#ifdef cray 208# define word word_t /* sys/types.h defines word.. bad move! */ 209#endif 210 211#include <sys/types.h> 212 213#ifdef cray 214# undef word 215#endif 216 217/* 218 * Path separator in environment variables 219 */ 220#ifndef PATHSEP 221# if defined(__EMX__) || defined(WINNT_NATIVE) 222# define PATHSEP ';' 223# else /* unix */ 224# define PATHSEP ':' 225# endif /* __EMX__ || WINNT_NATIVE */ 226#endif /* !PATHSEP */ 227 228#if defined(__HP_CXD_SPP) && !defined(__hpux) 229# include <sys/cnx_stat.h> 230# define stat stat64 231# define fstat fstat64 232# define lstat lstat64 233#endif /* __HP_CXD_SPP && !__hpux */ 234 235#ifdef HAVE_LONG_LONG 236typedef long long tcsh_number_t; 237#else 238typedef long tcsh_number_t; 239#endif 240/* 241 * This macro compares the st_dev field of struct stat. On aix on ibmESA 242 * st_dev is a structure, so comparison does not work. 243 */ 244#ifndef DEV_DEV_COMPARE 245# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 246#endif /* DEV_DEV_COMPARE */ 247 248#ifdef _SEQUENT_ 249# include <sys/procstats.h> 250#endif /* _SEQUENT_ */ 251#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 252# include <sys/times.h> 253#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 254 255#ifdef NLS 256# include <locale.h> 257#endif /* NLS */ 258 259#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 260# include <sys/param.h> 261#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 262#include <sys/stat.h> 263 264#if defined(BSDTIMES) || defined(BSDLIMIT) 265# include <sys/time.h> 266# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 267# include "/usr/ucbinclude/sys/resource.h" 268# else 269# ifdef convex 270# define sysrusage cvxrusage 271# include <sys/sysinfo.h> 272# else 273# define sysrusage rusage 274# include <sys/resource.h> 275# endif /* convex */ 276# endif /* SYSVREL>3 */ 277#endif /* BSDTIMES */ 278 279#ifndef WINNT_NATIVE 280# ifndef POSIX 281# ifdef TERMIO 282# include <termio.h> 283# else /* SGTTY */ 284# include <sgtty.h> 285# endif /* TERMIO */ 286# else /* POSIX */ 287# ifndef _UWIN 288# include <termios.h> 289# else 290# include <termio.h> 291# endif /* _UWIN */ 292# if SYSVREL > 3 || defined(__linux__) 293# undef TIOCGLTC /* we don't need those, since POSIX has them */ 294# undef TIOCSLTC 295# undef CSWTCH 296# define CSWTCH _POSIX_VDISABLE /* So job control works */ 297# endif /* SYSVREL > 3 */ 298# endif /* POSIX */ 299#endif /* WINNT_NATIVE */ 300 301#ifdef sonyrisc 302# include <sys/ttold.h> 303#endif /* sonyrisc */ 304 305#if defined(POSIX) && !defined(WINNT_NATIVE) 306# include <unistd.h> 307 308/* 309 * the gcc+protoize version of <stdlib.h> 310 * redefines malloc(), so we define the following 311 * to avoid it. 312 */ 313# if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) 314# define NO_FIX_MALLOC 315# include <stdlib.h> 316# else /* glibc */ 317# define _GNU_STDLIB_H 318# define malloc __malloc 319# define free __free 320# define calloc __calloc 321# define realloc __realloc 322# include <stdlib.h> 323# undef malloc 324# undef free 325# undef calloc 326# undef realloc 327# endif /* glibc || sgi */ 328#endif /* POSIX && !WINNT_NATIVE */ 329#include <limits.h> 330 331#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) 332# if !defined(pyr) && !defined(stellar) 333# include <time.h> 334# ifdef _MINIX 335# define HZ CLOCKS_PER_SEC 336# endif /* _MINIX */ 337# endif /* !pyr && !stellar */ 338#endif /* SYSVREL > 0 || _IBMR2 */ 339 340/* In the following ifdef the DECOSF1 has been commented so that later 341 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 342 */ 343#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 344# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 345# include <sys/ioctl.h> 346# if SYSVREL > 3 || defined(__linux__) 347# undef TIOCGLTC /* we don't need those, since POSIX has them */ 348# undef TIOCSLTC 349# undef CSWTCH 350# define CSWTCH _POSIX_VDISABLE /* So job control works */ 351# endif /* SYSVREL > 3 */ 352# endif 353#endif 354 355#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 356#undef CSWTCH 357#define CSWTCH _POSIX_VDISABLE 358#endif 359 360#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 361# include <sys/filio.h> 362#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 363 364#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 365# include <sys/file.h> 366#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 367 368#if !defined(O_RDONLY) || !defined(O_NDELAY) 369# include <fcntl.h> 370#endif 371 372#include <errno.h> 373 374#include <setjmp.h> 375 376#include <stdarg.h> 377 378#ifdef HAVE_DIRENT_H 379# include <dirent.h> 380#else 381# ifdef HAVE_NDIR_H 382# include <ndir.h> 383# else 384# include <sys/dir.h> 385# endif 386# define dirent direct 387#endif /* HAVE_DIRENT_H */ 388#ifndef HAVE_STRUCT_DIRENT_D_INO 389# define d_ino d_fileno 390#endif 391#if defined(hpux) || defined(sgi) || defined(OREO) 392# include <stdio.h> /* So the fgetpwent() prototypes work */ 393#endif /* hpux || sgi || OREO */ 394#ifndef WINNT_NATIVE 395#include <pwd.h> 396#include <grp.h> 397#endif /* WINNT_NATIVE */ 398#ifdef HAVE_SHADOW_H 399# include <shadow.h> 400#endif /* HAVE_SHADOW_H */ 401#ifdef HAVE_AUTH_H 402# include <auth.h> 403#endif /* HAVE_AUTH_H */ 404#if defined(BSD) && !defined(POSIX) 405# include <strings.h> 406# define strchr(a, b) index(a, b) 407# define strrchr(a, b) rindex(a, b) 408#else 409# include <string.h> 410#endif /* BSD */ 411 412/* 413 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 414 * include it yet, so we include it here 415 */ 416#if defined(sgi) && SYSVREL > 3 417# include <sys/cdefs.h> 418#endif /* sgi && SYSVREL > 3 */ 419 420#ifdef REMOTEHOST 421# ifdef ISC 422# undef MAXHOSTNAMELEN /* Busted headers? */ 423# endif 424 425# include <netinet/in.h> 426# include <arpa/inet.h> 427# include <sys/socket.h> 428# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) 429# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 430# if !defined(sgi) 431# if !defined(__CYGWIN__) 432# define INET6 433# endif /* __CYGWIN__ */ 434# endif /* sgi */ 435# endif /* __APPLE__ */ 436# endif 437# include <sys/uio.h> /* For struct iovec */ 438#endif /* REMOTEHOST */ 439 440#ifdef PURIFY 441/* exit normally, allowing purify to trace leaks */ 442# define _exit exit 443typedef int pret_t; 444#else /* !PURIFY */ 445/* 446 * If your compiler complains, then you can either 447 * throw it away and get gcc or, use the following define 448 * and get rid of the typedef. 449 * [The 4.2/3BSD vax compiler does not like that] 450 * Both MULTIFLOW and PCC compilers exhbit this bug. -- sterling@netcom.com 451 */ 452# if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__) 453# define pret_t void 454# else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */ 455typedef void pret_t; 456# endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */ 457#endif /* PURIFY */ 458 459/* 460 * ASCII vs. EBCDIC 461 */ 462#if 'Z' - 'A' == 25 463# ifndef IS_ASCII 464# define IS_ASCII 465# endif 466#endif 467 468#include "sh.types.h" 469 470#if !HAVE_DECL_GETPGRP 471# ifndef GETPGRP_VOID 472extern pid_t getpgrp (int); 473# else 474extern pid_t getpgrp (void); 475# endif 476#endif 477 478#ifndef lint 479typedef ptr_t memalign_t; 480#else 481typedef union { 482 char am_char, *am_char_p; 483 short am_short, *am_short_p; 484 int am_int, *am_int_p; 485 long am_long, *am_long_p; 486 float am_float, *am_float_p; 487 double am_double, *am_double_p; 488} *memalign_t; 489 490# define malloc lint_malloc 491# define free lint_free 492# define realloc lint_realloc 493# define calloc lint_calloc 494#endif 495 496#ifdef SYSMALLOC 497# define xmalloc(i) smalloc(i) 498# define xrealloc(p, i) srealloc(p, i) 499# define xcalloc(n, s) scalloc(n, s) 500# define xfree sfree 501#else 502# define xmalloc(i) malloc(i) 503# define xrealloc(p, i) realloc(p, i) 504# define xcalloc(n, s) calloc(n, s) 505# define xfree free 506#endif /* SYSMALLOC */ 507#include "sh.char.h" 508#include "sh.err.h" 509#include "sh.dir.h" 510#include "sh.proc.h" 511 512#include "pathnames.h" 513 514 515/* 516 * C shell 517 * 518 * Bill Joy, UC Berkeley 519 * October, 1978; May 1980 520 * 521 * Jim Kulp, IIASA, Laxenburg Austria 522 * April, 1980 523 */ 524 525#ifdef HESIOD 526# include <hesiod.h> 527#endif /* HESIOD */ 528 529#ifdef REMOTEHOST 530# include <netdb.h> 531#endif /* REMOTEHOST */ 532 533#ifndef MAXHOSTNAMELEN 534# ifdef HOST_NAME_MAX 535# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) 536# elif defined(SCO) && (SYSVREL > 3) 537# include <sys/socket.h> 538# else 539# define MAXHOSTNAMELEN 256 540# endif 541#endif /* MAXHOSTNAMELEN */ 542 543 544 545#define eq(a, b) (Strcmp(a, b) == 0) 546 547/* globone() flags */ 548#define G_ERROR 0 /* default action: error if multiple words */ 549#define G_IGNORE 1 /* ignore the rest of the words */ 550#define G_APPEND 2 /* make a sentence by cat'ing the words */ 551 552/* 553 * Global flags 554 */ 555EXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ 556 557#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 558# define CLOSE_ON_EXEC 559#else 560EXTERN int didcch IZERO; /* Have closed unused fd's for child */ 561#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 562 563EXTERN int didfds IZERO; /* Have setup i/o fd's for child */ 564EXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ 565EXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ 566EXTERN int child IZERO; /* Child shell ... errors cause exit */ 567EXTERN int haderr IZERO; /* Reset was because of an error */ 568EXTERN int intty IZERO; /* Input is a tty */ 569EXTERN int intact IZERO; /* We are interactive... therefore prompt */ 570EXTERN int justpr IZERO; /* Just print because of :p hist mod */ 571EXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ 572EXTERN int neednote IZERO; /* Need to pnotify() */ 573EXTERN int noexec IZERO; /* Don't execute, just syntax check */ 574EXTERN int pjobs IZERO; /* want to print jobs if interrupted */ 575EXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 576EXTERN int handle_intr IZERO;/* Are we currently handling an interrupt? */ 577EXTERN int havhash IZERO; /* path hashing is available */ 578EXTERN int editing IZERO; /* doing filename expansion and line editing */ 579EXTERN int noediting IZERO; /* initial $term defaulted to noedit */ 580EXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 581EXTERN int anyerror IZERO; /* propagate errors from pipelines/backq */ 582EXTERN int compat_expr IZERO;/* csh-style expressions? */ 583EXTERN int isoutatty IZERO; /* is SHOUT a tty */ 584EXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ 585EXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 586EXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 587EXTERN int arun IZERO; /* Currently running multi-line-aliases */ 588EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 589EXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ 590/* We received a window change event */ 591EXTERN volatile sig_atomic_t windowchg IZERO; 592#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) 593EXTERN int dspmbyte_ls; 594#endif 595 596/* 597 * Global i/o info 598 */ 599EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 600EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 601extern Char *ffile; /* Name of shell file for $0 */ 602extern int dolzero; /* if $?0 should return true... */ 603 604extern char *seterr; /* Error message from scanner/parser */ 605#ifndef errno 606extern int errno; /* Error from C library routines */ 607#endif 608extern int exitset; 609/* Temp name for << shell files in /tmp, for xfree() */ 610EXTERN Char *shtemp IZERO; 611 612#ifdef BSDTIMES 613EXTERN struct timeval time0; /* Time at which the shell started */ 614EXTERN struct sysrusage ru0; 615#else 616# ifdef _SEQUENT_ 617EXTERN timeval_t time0; /* time at which shell started */ 618EXTERN struct process_stats ru0; 619# else /* _SEQUENT_ */ 620# ifndef POSIX 621EXTERN time_t time0; /* time at which shell started */ 622# else /* POSIX */ 623EXTERN clock_t time0; /* time at which shell started */ 624EXTERN clock_t clk_tck; 625# endif /* POSIX */ 626EXTERN struct tms shtimes; /* shell and child times for process timing */ 627# endif /* _SEQUENT_ */ 628EXTERN time_t seconds0; 629#endif /* BSDTIMES */ 630 631#ifndef HZ 632# define HZ 100 /* for division into seconds */ 633#endif 634 635/* 636 * Miscellany 637 */ 638EXTERN Char *doldol; /* Character pid for $$ */ 639EXTERN pid_t backpid; /* pid of the last background job */ 640 641/* 642 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 643 * cause pid's could be unsigned and that would break our -1 flag, and 644 * uid_t and gid_t are not defined in all the systems so I would have to 645 * make special cases for them. In the future... 646 */ 647EXTERN uid_t uid, euid; /* Invokers real and effective */ 648EXTERN gid_t gid, egid; /* User and group ids */ 649EXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ 650 shpgrp, /* Pgrp of shell */ 651 tpgrp; /* Terminal process group */ 652 /* If tpgrp is -1, leave tty alone! */ 653 654EXTERN Char *Prompt; /* The actual printed prompt or NULL */ 655EXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ 656 657/* 658 * To be able to redirect i/o for builtins easily, the shell moves the i/o 659 * descriptors it uses away from 0,1,2. 660 * Ideally these should be in units which are closed across exec's 661 * (this saves work) but for version 6, this is not usually possible. 662 * The desired initial values for these descriptors are defined in 663 * sh.local.h. 664 */ 665EXTERN int SHIN IZERO; /* Current shell input (script) */ 666EXTERN int SHOUT IZERO; /* Shell output */ 667EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 668EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 669 670 671#if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__) 672/* 673 * From: fadden@uts.amdahl.com (Andy McFadden) 674 * we need sigsetjmp for UTS4, but not UTS2.1 675 */ 676# define SIGSETJMP 677#endif 678 679/* 680 * Error control 681 * 682 * Errors in scanning and parsing set up an error message to be printed 683 * at the end and complete. Other errors always cause a reset. 684 * Because of source commands and .cshrc we need nested error catches. 685 */ 686 687#ifdef SIGSETJMP 688 typedef struct { sigjmp_buf j; } jmp_buf_t; 689# define setexit() sigsetjmp(reslab.j, 1) 690# define _reset() siglongjmp(reslab.j, 1) 691#else 692 typedef struct { jmp_buf j; } jmp_buf_t; 693# define setexit() setjmp(reslab.j) 694# define _reset() longjmp(reslab.j, 1) 695#endif 696 697#define getexit(a) (void) ((a) = reslab) 698#define resexit(a) (void) (reslab = (a)) 699 700#define cpybin(a, b) (void) ((a) = (b)) 701 702extern jmp_buf_t reslab; 703 704EXTERN Char *gointr; /* Label for an onintr transfer */ 705 706extern struct sigaction parintr; /* Parents interrupt catch */ 707extern struct sigaction parterm; /* Parents terminate catch */ 708 709/* 710 * Lexical definitions. 711 * 712 * All lexical space is allocated dynamically. 713 * The eighth/sixteenth bit of characters is used to prevent recognition, 714 * and eventually stripped. 715 */ 716#define META 0200 717#define ASCII 0177 718#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ 719/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ 720# define QUOTE 0x40000000 721# define TRIM 0x3FFFFFFF /* Mask to strip quote bit */ 722# define UNDER 0x08000000 /* Underline flag */ 723# define BOLD 0x04000000 /* Bold flag */ 724# define STANDOUT 0x02000000 /* Standout flag */ 725# define LITERAL 0x01000000 /* Literal character flag */ 726# define ATTRIBUTES 0x0F000000 /* The bits used for attributes */ 727# define INVALID_BYTE 0x00800000 /* Invalid character on input */ 728# ifdef SOLARIS2 729# define CHAR 0x30FFFFFF /* Mask to mask out the character */ 730# else 731# define CHAR 0x00FFFFFF /* Mask to mask out the character */ 732# endif 733#elif defined (SHORT_STRINGS) 734# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 735# define TRIM 0073777 /* Mask to strip quote/lit bit */ 736# define UNDER 0040000 /* Underline flag */ 737# define BOLD 0020000 /* Bold flag */ 738# define STANDOUT 0010000 /* Standout flag */ 739# define LITERAL 0004000 /* Literal character flag */ 740# define ATTRIBUTES 0074000 /* The bits used for attributes */ 741# define INVALID_BYTE 0 742# define CHAR 0000377 /* Mask to mask out the character */ 743#else 744# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 745# define TRIM 0177 /* Mask to strip quote bit */ 746# define UNDER 0000000 /* No extra bits to do both */ 747# define BOLD 0000000 /* Bold flag */ 748# define STANDOUT META /* Standout flag */ 749# define LITERAL 0000000 /* Literal character flag */ 750# define ATTRIBUTES 0200 /* The bits used for attributes */ 751# define INVALID_BYTE 0 752# define CHAR 0000177 /* Mask to mask out the character */ 753#endif 754#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) 755 756EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 757 758/* 759 * Each level of input has a buffered input structure. 760 * There are one or more blocks of buffered input for each level, 761 * exactly one if the input is seekable and tell is available. 762 * In other cases, the shell buffers enough blocks to keep all loops 763 * in the buffer. 764 * 765 * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but 766 * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for 767 * fbuf indexing). 768 * 769 * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there 770 * is no difference between byte and character offsets. 771 */ 772EXTERN struct Bin { 773 off_t Bfseekp; /* Seek pointer, generally != lseek() value */ 774 off_t Bfbobp; /* Seekp of beginning of buffers */ 775 off_t Bfeobp; /* Seekp of end of buffers */ 776 int Bfblocks; /* Number of buffer blocks */ 777 Char **Bfbuf; /* The array of buffer blocks */ 778#ifdef WIDE_STRINGS 779 /* Number of bytes in each character if (cantell) */ 780 unsigned char Bfclens[BUFSIZE + 1]; 781#endif 782} B; 783 784/* 785 * This structure allows us to seek inside aliases 786 */ 787struct Ain { 788 int type; 789#define TCSH_I_SEEK 0 /* Invalid seek */ 790#define TCSH_A_SEEK 1 /* Alias seek */ 791#define TCSH_F_SEEK 2 /* File seek */ 792#define TCSH_E_SEEK 3 /* Eval seek */ 793 union { 794 off_t _f_seek; /* A byte offset if (cantell) */ 795 Char* _c_seek; 796 } fc; 797#define f_seek fc._f_seek 798#define c_seek fc._c_seek 799 Char **a_seek; 800} ; 801 802extern int aret; /* Type of last char returned */ 803#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 804 (a)->f_seek == (b)->f_seek && \ 805 (a)->a_seek == (b)->a_seek) 806 807#define fseekp B.Bfseekp 808#define fbobp B.Bfbobp 809#define feobp B.Bfeobp 810#define fblocks B.Bfblocks 811#define fbuf B.Bfbuf 812#define fclens B.Bfclens 813 814/* 815 * The shell finds commands in loops by reseeking the input 816 * For whiles, in particular, it reseeks to the beginning of the 817 * line the while was on; hence the while placement restrictions. 818 */ 819EXTERN struct Ain lineloc; 820 821EXTERN int cantell; /* Is current source tellable ? */ 822 823/* 824 * Input lines are parsed into doubly linked circular 825 * lists of words of the following form. 826 */ 827struct wordent { 828 Char *word; 829 struct wordent *prev; 830 struct wordent *next; 831}; 832 833/* 834 * During word building, both in the initial lexical phase and 835 * when expanding $ variable substitutions, expansion by `!' and `$' 836 * must be inhibited when reading ahead in routines which are themselves 837 * processing `!' and `$' expansion or after characters such as `\' or in 838 * quotations. The following flags are passed to the getC routines 839 * telling them which of these substitutions are appropriate for the 840 * next character to be returned. 841 */ 842#define DODOL 1 843#define DOEXCL 2 844#define DOALL DODOL|DOEXCL 845 846/* 847 * Labuf implements a general buffer for lookahead during lexical operations. 848 * Text which is to be placed in the input stream can be stuck here. 849 * We stick parsed ahead $ constructs during initial input, 850 * process id's from `$$', and modified variable values (from qualifiers 851 * during expansion in sh.dol.c) here. 852 */ 853extern struct Strbuf labuf; 854EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ 855 856/* 857 * Parser structure 858 * 859 * Each command is parsed to a tree of command structures and 860 * flags are set bottom up during this process, to be propagated down 861 * as needed during the semantics/exeuction pass (sh.sem.c). 862 */ 863struct command { 864 unsigned char t_dtyp; /* Type of node */ 865#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 866#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 867#define NODE_PIPE 3 /* t_dlef | t_drit */ 868#define NODE_LIST 4 /* t_dlef ; t_drit */ 869#define NODE_OR 5 /* t_dlef || t_drit */ 870#define NODE_AND 6 /* t_dlef && t_drit */ 871 unsigned char t_nice; /* Nice value */ 872#ifdef apollo 873 unsigned char t_systype; /* System environment */ 874#endif 875 unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 876/* save these when re-doing */ 877#ifndef apollo 878#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 879#else 880#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 881#endif 882#define F_AMPERSAND (1<<0) /* executes in background */ 883#define F_APPEND (1<<1) /* output is redirected >> */ 884#define F_PIPEIN (1<<2) /* input is a pipe */ 885#define F_PIPEOUT (1<<3) /* output is a pipe */ 886#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 887#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 888/* spare */ 889#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 890#define F_OVERWRITE (1<<8) /* output was ! */ 891#define F_READ (1<<9) /* input redirection is << */ 892#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 893#define F_NICE (1<<11) /* t_nice is meaningful */ 894#define F_NOHUP (1<<12) /* nohup this command */ 895#define F_TIME (1<<13) /* time this command */ 896#define F_BACKQ (1<<14) /* command is in `` */ 897#define F_HUP (1<<15) /* hup this command */ 898#ifdef apollo 899#define F_VER (1<<16) /* execute command under SYSTYPE */ 900#endif 901 union { 902 Char *T_dlef; /* Input redirect word */ 903 struct command *T_dcar; /* Left part of list/pipe */ 904 } L; 905 union { 906 Char *T_drit; /* Output redirect word */ 907 struct command *T_dcdr; /* Right part of list/pipe */ 908 } R; 909#define t_dlef L.T_dlef 910#define t_dcar L.T_dcar 911#define t_drit R.T_drit 912#define t_dcdr R.T_dcdr 913 Char **t_dcom; /* Command/argument vector */ 914 struct command *t_dspr; /* Pointer to ()'d subtree */ 915}; 916 917 918/* 919 * The keywords for the parser 920 */ 921#define TC_BREAK 0 922#define TC_BRKSW 1 923#define TC_CASE 2 924#define TC_DEFAULT 3 925#define TC_ELSE 4 926#define TC_END 5 927#define TC_ENDIF 6 928#define TC_ENDSW 7 929#define TC_EXIT 8 930#define TC_FOREACH 9 931#define TC_GOTO 10 932#define TC_IF 11 933#define TC_LABEL 12 934#define TC_LET 13 935#define TC_SET 14 936#define TC_SWITCH 15 937#define TC_TEST 16 938#define TC_THEN 17 939#define TC_WHILE 18 940 941/* 942 * These are declared here because they want to be 943 * initialized in sh.init.c (to allow them to be made readonly) 944 */ 945 946#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 947 /* Avoid hpux ansi mode spurious warnings */ 948typedef void (*bfunc_t) (); 949#else 950typedef void (*bfunc_t) (Char **, struct command *); 951#endif /* hpux && __STDC__ && !__GNUC__ */ 952 953extern const struct biltins { 954 const char *bname; 955 bfunc_t bfunct; 956 int minargs, maxargs; 957} bfunc[]; 958extern int nbfunc; 959#ifdef WINNT_NATIVE 960extern struct biltins nt_bfunc[]; 961extern int nt_nbfunc; 962#endif /* WINNT_NATIVE*/ 963extern int bequiet; 964 965extern struct srch { 966 const char *s_name; 967 int s_value; 968} srchn[]; 969extern int nsrchn; 970 971/* 972 * Structure defining the existing while/foreach loops at this 973 * source level. Loops are implemented by seeking back in the 974 * input. For foreach (fe), the word list is attached here. 975 */ 976EXTERN struct whyle { 977 struct Ain w_start; /* Point to restart loop */ 978 struct Ain w_end; /* End of loop (0 if unknown) */ 979 Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 980 Char *w_fename; /* Name for fe */ 981 struct whyle *w_next; /* Next (more outer) loop */ 982} *whyles; 983 984/* 985 * Variable structure 986 * 987 * Aliases and variables are stored in AVL balanced binary trees. 988 */ 989EXTERN struct varent { 990 Char **vec; /* Array of words which is the value */ 991 Char *v_name; /* Name of variable/alias */ 992 int v_flags; /* Flags */ 993#define VAR_ALL -1 994#define VAR_READONLY 1 995#define VAR_READWRITE 2 996#define VAR_NOGLOB 4 997#define VAR_FIRST 32 998#define VAR_LAST 64 999 struct varent *v_link[3]; /* The links, see below */ 1000 int v_bal; /* Balance factor */ 1001} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 1002 1003#define v_left v_link[0] 1004#define v_right v_link[1] 1005#define v_parent v_link[2] 1006 1007#define adrof(v) adrof1(v, &shvhed) 1008#define varval(v) value1(v, &shvhed) 1009 1010/* 1011 * The following are for interfacing redo substitution in 1012 * aliases to the lexical routines. 1013 */ 1014EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 1015EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 1016EXTERN Char **alvec IZERO_STRUCT, 1017 *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 1018 1019/* 1020 * Filename/command name expansion variables 1021 */ 1022 1023#ifdef __CYGWIN__ 1024# undef MAXPATHLEN 1025#endif /* __CYGWIN__ */ 1026 1027#ifndef MAXPATHLEN 1028# ifdef PATH_MAX 1029# define MAXPATHLEN PATH_MAX 1030# else 1031# define MAXPATHLEN 2048 1032# endif 1033#endif /* MAXPATHLEN */ 1034 1035#ifndef HAVENOLIMIT 1036/* 1037 * resource limits 1038 */ 1039extern struct limits { 1040 int limconst; 1041 const char *limname; 1042 int limdiv; 1043 const char *limscale; 1044} limits[]; 1045#endif /* !HAVENOLIMIT */ 1046 1047/* 1048 * History list 1049 * 1050 * Each history list entry contains an embedded wordlist 1051 * from the scanner, a number for the event, and a reference count 1052 * to aid in discarding old entries. 1053 * 1054 * Essentially "invisible" entries are put on the history list 1055 * when history substitution includes modifiers, and thrown away 1056 * at the next discarding since their event numbers are very negative. 1057 */ 1058EXTERN struct Hist { 1059 struct wordent Hlex; 1060 int Hnum; /* eventno when inserted into history list */ 1061 int Href; 1062 time_t Htime; 1063 Char *histline; 1064 struct Hist *Hnext, *Hprev; /* doubly linked list */ 1065 unsigned Hhash; /* hash value of command line */ 1066} Histlist IZERO_STRUCT; 1067 1068EXTERN struct wordent paraml; /* Current lexical word list */ 1069EXTERN int eventno; /* Next events number */ 1070EXTERN int lastev; /* Last event reference (default) */ 1071 1072EXTERN Char HIST; /* history invocation character */ 1073EXTERN Char HISTSUB; /* auto-substitute character */ 1074EXTERN Char PRCH; /* Prompt symbol for regular users */ 1075EXTERN Char PRCHROOT; /* Prompt symbol for root */ 1076 1077/* 1078 * For operating systems with single case filenames (OS/2) 1079 */ 1080#ifdef CASE_INSENSITIVE 1081# ifdef WIDE_STRINGS 1082# define samecase(x) (towlower(x)) 1083# else 1084# define samecase(x) (isupper((unsigned char)(x)) ? \ 1085 tolower((unsigned char)(x)) : (x)) 1086# endif 1087#else 1088# define samecase(x) (x) 1089#endif /* CASE_INSENSITIVE */ 1090 1091/* 1092 * strings.h: 1093 */ 1094#ifndef SHORT_STRINGS 1095#define Strchr(a, b) strchr(a, b) 1096#define Strrchr(a, b) strrchr(a, b) 1097#define Strcat(a, b) strcat(a, b) 1098#define Strncat(a, b, c) strncat(a, b, c) 1099#define Strcpy(a, b) strcpy(a, b) 1100#define Strncpy(a, b, c) strncpy(a, b, c) 1101#define Strlen(a) strlen(a) 1102#define Strcmp(a, b) strcmp(a, b) 1103#define Strncmp(a, b, c) strncmp(a, b, c) 1104#define Strcasecmp(a, b) strcasecmp(a, b) 1105 1106#define Strspl(a, b) strspl(a, b) 1107#define Strnsave(a, b) strnsave(a, b) 1108#define Strsave(a) strsave(a) 1109#define Strend(a) strend(a) 1110#define Strstr(a, b) strstr(a, b) 1111 1112#define str2short(a) (a) 1113#define blk2short(a) saveblk(a) 1114#define short2blk(a) saveblk(a) 1115#define short2str(a) caching_strip(a) 1116#else 1117#if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS) 1118#define Strchr(a, b) wcschr(a, b) 1119#define Strrchr(a, b) wcsrchr(a, b) 1120#define Strcat(a, b) wcscat(a, b) 1121#define Strncat(a, b, c) wcsncat(a, b, c) 1122#define Strcpy(a, b) wcscpy(a, b) 1123#define Strncpy(a, b, c) wcsncpy(a, b, c) 1124#define Strlen(a) wcslen(a) 1125#define Strcmp(a, b) wcscmp(a, b) 1126#define Strncmp(a, b, c) wcsncmp(a, b, c) 1127#else 1128#define Strchr(a, b) s_strchr(a, b) 1129#define Strrchr(a, b) s_strrchr(a, b) 1130#define Strcat(a, b) s_strcat(a, b) 1131#define Strncat(a, b, c) s_strncat(a, b, c) 1132#define Strcpy(a, b) s_strcpy(a, b) 1133#define Strncpy(a, b, c) s_strncpy(a, b, c) 1134#define Strlen(a) s_strlen(a) 1135#define Strcmp(a, b) s_strcmp(a, b) 1136#define Strncmp(a, b, c) s_strncmp(a, b, c) 1137#endif 1138#define Strcasecmp(a, b) s_strcasecmp(a, b) 1139 1140#define Strspl(a, b) s_strspl(a, b) 1141#define Strnsave(a, b) s_strnsave(a, b) 1142#define Strsave(a) s_strsave(a) 1143#define Strend(a) s_strend(a) 1144#define Strstr(a, b) s_strstr(a, b) 1145#endif 1146 1147/* 1148 * setname is a macro to save space (see sh.err.c) 1149 */ 1150EXTERN const char *bname; 1151 1152#define setname(a) (bname = (a)) 1153 1154#ifdef VFORK 1155EXTERN Char *Vsav; 1156EXTERN Char *Vdp; 1157EXTERN Char *Vexpath; 1158EXTERN char **Vt; 1159#endif /* VFORK */ 1160 1161EXTERN Char **evalvec; 1162EXTERN Char *evalp; 1163 1164extern struct mesg { 1165 const char *iname; /* name from /usr/include */ 1166 const char *pname; /* print name */ 1167} mesg[]; 1168 1169/* word_chars is set by default to WORD_CHARS but can be overridden by 1170 the worchars variable--if unset, reverts to WORD_CHARS */ 1171 1172EXTERN Char *word_chars; 1173 1174#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 1175 1176EXTERN Char *STR_SHELLPATH; 1177 1178#ifdef _PATH_BSHELL 1179EXTERN Char *STR_BSHELL; 1180#endif 1181EXTERN Char *STR_WORD_CHARS; 1182EXTERN Char **STR_environ IZERO; 1183 1184extern int dont_free; /* Tell free that we are in danger if we free */ 1185 1186extern Char *INVPTR; 1187extern Char **INVPPTR; 1188 1189extern char *progname; 1190extern int tcsh; 1191extern int xlate_cr; 1192extern int output_raw; 1193extern int lbuffed; 1194extern time_t Htime; 1195extern int numeof; 1196extern int insource; 1197extern char linbuf[]; 1198extern char *linp; 1199extern int nsig; 1200#ifdef VFORK 1201extern int use_fork; 1202#endif 1203extern int tellwhat; 1204extern int NoNLSRebind; 1205#if !HAVE_DECL_ENVIRON 1206extern char **environ; 1207#endif 1208 1209#include "tc.h" 1210 1211#ifndef WINNT_NATIVE 1212# ifdef NLS_CATALOGS 1213# ifdef HAVE_FEATURES_H 1214# include <features.h> 1215# endif 1216# ifdef HAVE_NL_LANGINFO 1217# include <langinfo.h> 1218# endif 1219# ifdef __uxps__ 1220# define gettxt gettxt_ds 1221# endif 1222# include <nl_types.h> 1223# ifdef __uxps__ 1224# undef gettxt 1225# endif 1226EXTERN nl_catd catd; 1227# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) 1228# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) 1229# else 1230# define CGETS(b, c, d) xcatgets(catd, b, c, d) 1231# endif 1232# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1233# else 1234# define CGETS(b, c, d) d 1235# define CSAVS(b, c, d) d 1236# endif 1237#else /* WINNT_NATIVE */ 1238# define CGETS(b, c, d) nt_cgets( b, c, d) 1239# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1240#endif /* WINNT_NATIVE */ 1241 1242#if defined(FILEC) 1243extern int filec; 1244#endif /* FILEC */ 1245 1246#include "sh.decls.h" 1247/* 1248 * Since on some machines characters are unsigned, and the signed 1249 * keyword is not universally implemented, we treat all characters 1250 * as unsigned and sign extend them where we need. 1251 */ 1252#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 1253 1254/* 1255 * explanation for use by the "--help" option 1256 */ 1257#define HELP_STRING "\ 1258-b file batch mode, read and execute commands from `file' \n\ 1259-c command run `command' from next argument \n\ 1260-d load directory stack from `~/.cshdirs' \n\ 1261-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ 1262-e exit on any error \n\ 1263-f start faster by ignoring the start-up file \n\ 1264-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ 1265-i interactive, even when input is not from a terminal \n\ 1266-l act as a login shell, must be the only option specified \n\ 1267-m load the start-up file, whether or not owned by effective user \n\ 1268-n file no execute mode, just check syntax of the following `file' \n\ 1269-q accept SIGQUIT for running under a debugger \n\ 1270-s read commands from standard input \n\ 1271-t read one line from standard input \n\ 1272-v echo commands after history substitution \n\ 1273-V like -v but including commands read from the start-up file \n\ 1274-x echo commands immediately before execution \n\ 1275-X like -x but including commands read from the start-up file \n\ 1276--help print this message and exit \n\ 1277--version print the version shell variable and exit \n\ 1278\nSee the tcsh(1) manual page for detailed information.\n" 1279 1280#include "tc.nls.h" 1281 1282#endif /* _h_sh */ 1283