1/* 2 * sh.h: Catch it all globals and includes file! 3 */ 4/*- 5 * Copyright (c) 1980, 1991 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32#ifndef _h_sh 33#define _h_sh 34 35#include "config.h" 36 37#include <stddef.h> 38#include <signal.h> 39 40#ifdef HAVE_ICONV 41# include <iconv.h> 42#endif 43 44#ifdef HAVE_STDINT_H 45# include <stdint.h> 46#endif 47 48#ifdef HAVE_INTTYPES_H 49# include <inttypes.h> 50#endif 51 52#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE) 53typedef unsigned long intptr_t; 54#endif 55 56#ifndef EXTERN 57# define EXTERN extern 58#else /* !EXTERN */ 59# ifdef WINNT_NATIVE 60# define IZERO = 0 61# define IZERO_STRUCT = {0} 62# endif /* WINNT_NATIVE */ 63#endif /* EXTERN */ 64 65#ifndef IZERO 66# define IZERO 67#endif /* IZERO */ 68#ifndef IZERO_STRUCT 69# define IZERO_STRUCT 70#endif /* IZERO_STRUCT */ 71 72#ifndef WINNT_NATIVE 73# define INIT_ZERO 74# define INIT_ZERO_STRUCT 75# define force_read xread 76#endif /*!WINNT_NATIVE */ 77 78#if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET) 79#define AUTOSET_KANJI 80#endif 81/* 82 * Sanity 83 */ 84#if defined(_POSIX_SOURCE) && !defined(POSIX) 85# define POSIX 86#endif 87 88#if defined(POSIXJOBS) && !defined(BSDJOBS) 89# define BSDJOBS 90#endif 91 92#define TMP_TEMPLATE ".XXXXXX" 93 94#ifdef SHORT_STRINGS 95# ifdef WIDE_STRINGS 96#include <wchar.h> 97# ifdef UTF16_STRINGS 98typedef wint_t Char; 99# else 100typedef wchar_t Char; 101#endif 102typedef unsigned long uChar; 103typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */ 104#define CHAR_ERR WEOF /* Pretty please, use bit 31... */ 105#define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N) 106#define reset_mbtowc() TCSH_IGNORE(mbtowc(NULL, NULL, 0)) 107# else 108typedef short Char; 109typedef unsigned short uChar; 110typedef int eChar; 111#define CHAR_ERR (-1) 112#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 113#define reset_mbtowc() ((void)0) 114# endif 115# define SAVE(a) (Strsave(str2short(a))) 116#else 117typedef char Char; 118typedef unsigned char uChar; 119typedef int eChar; 120#define CHAR_ERR (-1) 121#define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1) 122#define reset_mbtowc() ((void)0) 123# define SAVE(a) (strsave(a)) 124#endif 125 126#if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER) 127#define __inline 128#endif 129#ifdef _MSC_VER 130#define TCSH_PTRDIFF_T_FMT "I" 131#else 132#define TCSH_PTRDIFF_T_FMT "t" 133#endif 134/* Elide unused argument warnings */ 135#define USE(a) (void) (a) 136#define TCSH_IGNORE(a) tcsh_ignore((intptr_t)a) 137static __inline void tcsh_ignore(intptr_t a) 138{ 139 USE(a); 140} 141 142/* 143 * Return true if the path is absolute 144 */ 145#if defined(WINNT_NATIVE) 146# define ABSOLUTEP(p) ((p)[0] == '/' || \ 147 (Isalpha((p)[0]) && (p)[1] == ':')) 148#elif defined(__CYGWIN__) 149# define ABSOLUTEP(p) ((p)[0] == '/' || \ 150 (Isalpha((p)[0]) && (p)[1] == ':' && \ 151 ((p)[2] == '\0' || (p)[2] == '/'))) 152#else /* !WINNT_NATIVE && !__CYGWIN__ */ 153# define ABSOLUTEP(p) (*(p) == '/') 154#endif /* WINNT_NATIVE || __CYGWIN__ */ 155 156/* 157 * Fundamental definitions which may vary from system to system. 158 * 159 * BUFSIZE The i/o buffering size; also limits word size 160 * MAILINTVL How often to mailcheck; more often is more expensive 161 */ 162#ifdef BUFSIZE 163# if BUFSIZE < 4096 164# undef BUFSIZE 165# define BUFSIZE 4096 /* buffer size should be no less than this */ 166# endif 167#else 168# define BUFSIZE 4096 169#endif /* BUFSIZE */ 170 171#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 172#define MAILINTVL 600 /* 10 minutes */ 173 174#ifndef INBUFSIZE 175# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 176#endif /* INBUFSIZE */ 177 178 179/* 180 * What our builtin echo looks like 181 */ 182#define NONE_ECHO 0 183#define BSD_ECHO 1 184#define SYSV_ECHO 2 185#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 186 187#ifndef ECHO_STYLE 188# if SYSVREL > 0 189# define ECHO_STYLE SYSV_ECHO 190# else /* SYSVREL == 0 */ 191# define ECHO_STYLE BSD_ECHO 192# endif /* SYSVREL */ 193#endif /* ECHO_STYLE */ 194 195/* values for noclobber */ 196#define NOCLOBBER_DEFAULT 1 197#define NOCLOBBER_NOTEMPTY 2 198#define NOCLOBBER_ASK 4 199 200/* 201 * The shell moves std in/out/diag and the old std input away from units 202 * 0, 1, and 2 so that it is easy to set up these standards for invoked 203 * commands. 204 */ 205#define FSAFE 5 /* We keep the first 5 descriptors untouched */ 206#define FSHTTY 15 /* /dev/tty when manip pgrps */ 207#define FSHIN 16 /* Preferred desc for shell input */ 208#define FSHOUT 17 /* ... shell output */ 209#define FSHDIAG 18 /* ... shell diagnostics */ 210#define FOLDSTD 19 /* ... old std input */ 211 212#ifdef PROF 213#define xexit(n) done(n) 214#endif 215 216#ifdef cray 217# define word word_t /* sys/types.h defines word.. bad move! */ 218#endif 219 220#include <sys/types.h> 221 222#ifdef cray 223# undef word 224#endif 225 226/* 227 * Path separator in environment variables 228 */ 229#ifndef PATHSEP 230# if defined(__EMX__) || defined(WINNT_NATIVE) 231# define PATHSEP ';' 232# else /* unix */ 233# define PATHSEP ':' 234# endif /* __EMX__ || WINNT_NATIVE */ 235#endif /* !PATHSEP */ 236 237#if defined(__HP_CXD_SPP) && !defined(__hpux) 238# include <sys/cnx_stat.h> 239# define stat stat64 240# define fstat fstat64 241# define lstat lstat64 242#endif /* __HP_CXD_SPP && !__hpux */ 243 244#ifdef HAVE_LONG_LONG 245typedef long long tcsh_number_t; 246#else 247typedef long tcsh_number_t; 248#endif 249/* 250 * This macro compares the st_dev field of struct stat. On aix on ibmESA 251 * st_dev is a structure, so comparison does not work. 252 */ 253#ifndef DEV_DEV_COMPARE 254# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 255#endif /* DEV_DEV_COMPARE */ 256 257#ifdef _SEQUENT_ 258# include <sys/procstats.h> 259#endif /* _SEQUENT_ */ 260#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 261# include <sys/times.h> 262#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 263 264#ifdef NLS 265# include <locale.h> 266#endif /* NLS */ 267 268#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 269# include <sys/param.h> 270#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 271#include <sys/stat.h> 272 273#if defined(BSDTIMES) || defined(BSDLIMIT) 274# include <sys/time.h> 275# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 276# include "/usr/ucbinclude/sys/resource.h" 277# else 278# ifdef convex 279# define sysrusage cvxrusage 280# include <sys/sysinfo.h> 281# else 282# define sysrusage rusage 283# include <sys/resource.h> 284# endif /* convex */ 285# endif /* SYSVREL>3 */ 286#endif /* BSDTIMES */ 287 288#ifndef WINNT_NATIVE 289# ifndef POSIX 290# ifdef TERMIO 291# include <termio.h> 292# else /* SGTTY */ 293# include <sgtty.h> 294# endif /* TERMIO */ 295# else /* POSIX */ 296# ifndef _UWIN 297# include <termios.h> 298# else 299# include <termio.h> 300# endif /* _UWIN */ 301# if SYSVREL > 3 || defined(__linux__) 302# undef TIOCGLTC /* we don't need those, since POSIX has them */ 303# undef TIOCSLTC 304# undef CSWTCH 305# define CSWTCH _POSIX_VDISABLE /* So job control works */ 306# endif /* SYSVREL > 3 */ 307# endif /* POSIX */ 308#endif /* WINNT_NATIVE */ 309 310#ifdef sonyrisc 311# include <sys/ttold.h> 312#endif /* sonyrisc */ 313 314#if defined(POSIX) && !defined(WINNT_NATIVE) 315# include <unistd.h> 316 317/* 318 * the gcc+protoize version of <stdlib.h> 319 * redefines malloc(), so we define the following 320 * to avoid it. 321 */ 322# if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) 323# define NO_FIX_MALLOC 324# include <stdlib.h> 325# else /* glibc */ 326# define _GNU_STDLIB_H 327# define malloc __malloc 328# define free __free 329# define calloc __calloc 330# define realloc __realloc 331# include <stdlib.h> 332# undef malloc 333# undef free 334# undef calloc 335# undef realloc 336# endif /* glibc || sgi */ 337#endif /* POSIX && !WINNT_NATIVE */ 338#include <limits.h> 339 340#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) 341# if !defined(pyr) && !defined(stellar) 342# include <time.h> 343# ifdef _MINIX 344# define HZ CLOCKS_PER_SEC 345# endif /* _MINIX */ 346# endif /* !pyr && !stellar */ 347#endif /* SYSVREL > 0 || _IBMR2 */ 348 349/* In the following ifdef the DECOSF1 has been commented so that later 350 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 351 */ 352#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 353# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 354# include <sys/ioctl.h> 355# if SYSVREL > 3 || defined(__linux__) 356# undef TIOCGLTC /* we don't need those, since POSIX has them */ 357# undef TIOCSLTC 358# undef CSWTCH 359# define CSWTCH _POSIX_VDISABLE /* So job control works */ 360# endif /* SYSVREL > 3 */ 361# endif 362#endif 363 364#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 365#undef CSWTCH 366#define CSWTCH _POSIX_VDISABLE 367#endif 368 369#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 370# include <sys/filio.h> 371#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 372 373#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 374# include <sys/file.h> 375#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 376 377#if !defined(O_RDONLY) || !defined(O_NDELAY) 378# include <fcntl.h> 379#endif 380 381#include <errno.h> 382 383#include <setjmp.h> 384 385#include <stdarg.h> 386 387#ifdef HAVE_DIRENT_H 388# include <dirent.h> 389#else 390# ifdef HAVE_NDIR_H 391# include <ndir.h> 392# else 393# include <sys/dir.h> 394# endif 395# define dirent direct 396#endif /* HAVE_DIRENT_H */ 397#ifndef HAVE_STRUCT_DIRENT_D_INO 398# define d_ino d_fileno 399#endif 400#if defined(hpux) || defined(sgi) || defined(OREO) 401# include <stdio.h> /* So the fgetpwent() prototypes work */ 402#endif /* hpux || sgi || OREO */ 403#ifndef WINNT_NATIVE 404#include <pwd.h> 405#include <grp.h> 406#endif /* WINNT_NATIVE */ 407#ifdef HAVE_SHADOW_H 408# include <shadow.h> 409#endif /* HAVE_SHADOW_H */ 410#ifdef HAVE_AUTH_H 411# include <auth.h> 412#endif /* HAVE_AUTH_H */ 413#if defined(BSD) && !defined(POSIX) 414# include <strings.h> 415# define strchr(a, b) index(a, b) 416# define strrchr(a, b) rindex(a, b) 417#else 418# include <string.h> 419#endif /* BSD */ 420 421/* 422 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 423 * include it yet, so we include it here 424 */ 425#if defined(sgi) && SYSVREL > 3 426# include <sys/cdefs.h> 427#endif /* sgi && SYSVREL > 3 */ 428 429#ifdef REMOTEHOST 430# ifdef ISC 431# undef MAXHOSTNAMELEN /* Busted headers? */ 432# endif 433 434# include <netinet/in.h> 435# include <arpa/inet.h> 436# include <sys/socket.h> 437# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) 438# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 439# if !defined(sgi) 440# define INET6 441# endif /* sgi */ 442# endif /* __APPLE__ */ 443# endif 444# include <sys/uio.h> /* For struct iovec */ 445#endif /* REMOTEHOST */ 446 447#ifdef PURIFY 448/* exit normally, allowing purify to trace leaks */ 449# define _exit exit 450#endif /* !PURIFY */ 451 452/* 453 * ASCII vs. EBCDIC 454 */ 455#if 'Z' - 'A' == 25 456# ifndef IS_ASCII 457# define IS_ASCII 458# endif 459#endif 460 461#include "sh.types.h" 462 463#if !HAVE_DECL_GETPGRP 464# ifndef GETPGRP_VOID 465extern pid_t getpgrp (int); 466# else 467extern pid_t getpgrp (void); 468# endif 469#endif 470 471#ifndef lint 472typedef ptr_t memalign_t; 473#else 474typedef union { 475 char am_char, *am_char_p; 476 short am_short, *am_short_p; 477 int am_int, *am_int_p; 478 long am_long, *am_long_p; 479 float am_float, *am_float_p; 480 double am_double, *am_double_p; 481} *memalign_t; 482 483# define malloc lint_malloc 484# define free lint_free 485# define realloc lint_realloc 486# define calloc lint_calloc 487#endif 488 489#ifdef SYSMALLOC 490# define xmalloc(i) smalloc(i) 491# define xrealloc(p, i) srealloc(p, i) 492# define xcalloc(n, s) scalloc(n, s) 493# define xfree sfree 494#else 495# define xmalloc(i) malloc(i) 496# define xrealloc(p, i) realloc(p, i) 497# define xcalloc(n, s) calloc(n, s) 498# define xfree free 499#endif /* SYSMALLOC */ 500#include "sh.char.h" 501#include "sh.err.h" 502#include "sh.dir.h" 503#include "sh.proc.h" 504 505#include "pathnames.h" 506 507 508/* 509 * C shell 510 * 511 * Bill Joy, UC Berkeley 512 * October, 1978; May 1980 513 * 514 * Jim Kulp, IIASA, Laxenburg Austria 515 * April, 1980 516 */ 517 518#ifdef HESIOD 519# include <hesiod.h> 520#endif /* HESIOD */ 521 522#ifdef REMOTEHOST 523# include <netdb.h> 524#endif /* REMOTEHOST */ 525 526#ifndef MAXHOSTNAMELEN 527# ifdef HOST_NAME_MAX 528# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) 529# elif defined(SCO) && (SYSVREL > 3) 530# include <sys/socket.h> 531# else 532# define MAXHOSTNAMELEN 256 533# endif 534#endif /* MAXHOSTNAMELEN */ 535 536 537 538#define eq(a, b) (Strcmp(a, b) == 0) 539 540/* globone() flags */ 541#define G_ERROR 0 /* default action: error if multiple words */ 542#define G_IGNORE 1 /* ignore the rest of the words */ 543#define G_APPEND 2 /* make a sentence by cat'ing the words */ 544 545/* 546 * Global flags 547 */ 548EXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ 549 550#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 551# define CLOSE_ON_EXEC 552#else 553EXTERN int didcch IZERO; /* Have closed unused fd's for child */ 554#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 555 556EXTERN int didfds IZERO; /* Have setup i/o fd's for child */ 557EXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ 558EXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ 559EXTERN int child IZERO; /* Child shell ... errors cause exit */ 560EXTERN int haderr IZERO; /* Reset was because of an error */ 561EXTERN int intty IZERO; /* Input is a tty */ 562EXTERN int intact IZERO; /* We are interactive... therefore prompt */ 563EXTERN int justpr IZERO; /* Just print because of :p hist mod */ 564EXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ 565EXTERN int neednote IZERO; /* Need to pnotify() */ 566EXTERN int noexec IZERO; /* Don't execute, just syntax check */ 567EXTERN int pjobs IZERO; /* want to print jobs if interrupted */ 568EXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 569EXTERN int handle_interrupt IZERO;/* Are we currently handling an interrupt? */ 570EXTERN int havhash IZERO; /* path hashing is available */ 571EXTERN int editing IZERO; /* doing filename expansion and line editing */ 572EXTERN int noediting IZERO; /* initial $term defaulted to noedit */ 573EXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 574EXTERN int anyerror IZERO; /* propagate errors from pipelines/backq */ 575EXTERN int compat_expr IZERO;/* csh-style expressions? */ 576EXTERN int isoutatty IZERO; /* is SHOUT a tty */ 577EXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ 578EXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 579EXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 580EXTERN int arun IZERO; /* Currently running multi-line-aliases */ 581EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 582EXTERN int cdtohome IZERO; /* cd without args goes home */ 583EXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ 584EXTERN int no_clobber IZERO; /* no clobber enabled? 1=yes 2=notempty, 4=ask*/ 585/* We received a window change event */ 586EXTERN volatile sig_atomic_t windowchg IZERO; 587#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) 588EXTERN int dspmbyte_ls; 589#endif 590 591/* 592 * Global i/o info 593 */ 594EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 595EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 596extern Char *ffile; /* Name of shell file for $0 */ 597extern int dolzero; /* if $?0 should return true... */ 598 599extern char *seterr; /* Error message from scanner/parser */ 600#ifndef errno 601extern int errno; /* Error from C library routines */ 602#endif 603extern int exitset; 604/* Temp name for << shell files in /tmp, for xfree() */ 605EXTERN Char *shtemp IZERO; 606 607#ifdef BSDTIMES 608EXTERN struct timeval time0; /* Time at which the shell started */ 609EXTERN struct sysrusage ru0; 610#else 611# ifdef _SEQUENT_ 612EXTERN timeval_t time0; /* time at which shell started */ 613EXTERN struct process_stats ru0; 614# else /* _SEQUENT_ */ 615# ifndef POSIX 616EXTERN time_t time0; /* time at which shell started */ 617# else /* POSIX */ 618EXTERN clock_t time0; /* time at which shell started */ 619EXTERN clock_t clk_tck; 620# endif /* POSIX */ 621EXTERN struct tms shtimes; /* shell and child times for process timing */ 622# endif /* _SEQUENT_ */ 623EXTERN time_t seconds0; 624#endif /* BSDTIMES */ 625 626#ifndef HZ 627# define HZ 100 /* for division into seconds */ 628#endif 629 630/* 631 * Miscellany 632 */ 633EXTERN pid_t mainpid; /* pid of the main shell ($$) */ 634EXTERN Char *doldol; /* Character pid for $$ */ 635EXTERN pid_t backpid; /* pid of the last background job */ 636 637 638/* 639 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 640 * cause pid's could be unsigned and that would break our -1 flag, and 641 * uid_t and gid_t are not defined in all the systems so I would have to 642 * make special cases for them. In the future... 643 */ 644EXTERN uid_t uid, euid; /* Invokers real and effective */ 645EXTERN gid_t gid, egid; /* User and group ids */ 646EXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ 647 shpgrp, /* Pgrp of shell */ 648 tpgrp; /* Terminal process group */ 649 /* If tpgrp is -1, leave tty alone! */ 650 651EXTERN Char *Prompt; /* The actual printed prompt or NULL */ 652EXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ 653 654/* 655 * To be able to redirect i/o for builtins easily, the shell moves the i/o 656 * descriptors it uses away from 0,1,2. 657 * Ideally these should be in units which are closed across exec's 658 * (this saves work) but for version 6, this is not usually possible. 659 * The desired initial values for these descriptors are defined in 660 * sh.local.h. 661 */ 662EXTERN int SHIN IZERO; /* Current shell input (script) */ 663EXTERN int SHOUT IZERO; /* Shell output */ 664EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 665EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 666 667 668#if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__) 669/* 670 * From: fadden@uts.amdahl.com (Andy McFadden) 671 * we need sigsetjmp for UTS4, but not UTS2.1 672 */ 673# define SIGSETJMP 674#endif 675 676/* 677 * Error control 678 * 679 * Errors in scanning and parsing set up an error message to be printed 680 * at the end and complete. Other errors always cause a reset. 681 * Because of source commands and .cshrc we need nested error catches. 682 */ 683 684#ifdef SIGSETJMP 685 typedef struct { const char *f; size_t l; sigjmp_buf j; } jmp_buf_t; 686# define tcsh_setjmp() sigsetjmp(reslab.j, 1) 687# define tcsh_longjmp() siglongjmp(reslab.j, 1) 688# define setexit() (reslab.f = __func__, \ 689 reslab.l = __LINE__, \ 690 sigsetjmp(reslab.j, 1)) 691# define _reset() siglongjmp(reslab.j, 1) 692#else 693 typedef struct { const char *f; size_t l; jmp_buf j; } jmp_buf_t; 694# define tcsh_setjmp() setjmp(reslab.j) 695# define tcsh_longjmp() longjmp(reslab.j, 1) 696#endif 697 698#define setexit() (reslab.f = __func__, \ 699 reslab.l = __LINE__, \ 700 tcsh_setjmp()) 701#ifdef SETJMP_DEBUG 702# define _reset() xprintf("reset %s %zu\n", reslab.f, reslab.l), \ 703 flush(), tcsh_longjmp() 704#else 705# define _reset() tcsh_longjmp() 706#endif 707 708#define getexit(a) (void) ((a) = reslab) 709#define resexit(a) (void) (reslab = (a)) 710 711#define cpybin(a, b) (void) ((a) = (b)) 712 713extern jmp_buf_t reslab; 714 715EXTERN Char *gointr; /* Label for an onintr transfer */ 716 717extern struct sigaction parintr; /* Parents interrupt catch */ 718extern struct sigaction parterm; /* Parents terminate catch */ 719 720/* 721 * Lexical definitions. 722 * 723 * All lexical space is allocated dynamically. 724 * The eighth/sixteenth bit of characters is used to prevent recognition, 725 * and eventually stripped. 726 */ 727#define META 0200 728#define ASCII 0177 729#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ 730/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ 731/* 732 * Notice 733 * 734 * By fix for handling unicode name file, 32nd bit is used. 735 * We need use '&' instead of '> or <' when comparing with INVALID_BYTE etc.. 736 * Cast to uChar is not recommended, 737 * becase Char is 4bytes but uChar is 8bytes on I32LP64. */ 738# define QUOTE 0x80000000 739# define TRIM 0x7FFFFFFF /* Mask to strip quote bit */ 740# define UNDER 0x08000000 /* Underline flag */ 741# define BOLD 0x04000000 /* Bold flag */ 742# define STANDOUT 0x02000000 /* Standout flag */ 743# define LITERAL 0x01000000 /* Literal character flag */ 744# define ATTRIBUTES 0x0F000000 /* The bits used for attributes */ 745# define INVALID_BYTE 0xF0000000 /* Invalid character on input */ 746# ifdef SOLARIS2 747# define CHAR 0x30FFFFFF /* Mask to mask out the character */ 748# else 749# define CHAR 0x00FFFFFF /* Mask to mask out the character */ 750# endif 751#elif defined (SHORT_STRINGS) 752# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 753# define TRIM 0073777 /* Mask to strip quote/lit bit */ 754# define UNDER 0040000 /* Underline flag */ 755# define BOLD 0020000 /* Bold flag */ 756# define STANDOUT 0010000 /* Standout flag */ 757# define LITERAL 0004000 /* Literal character flag */ 758# define ATTRIBUTES 0074000 /* The bits used for attributes */ 759# define INVALID_BYTE 0 760# define CHAR 0000377 /* Mask to mask out the character */ 761#else 762# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 763# define TRIM 0177 /* Mask to strip quote bit */ 764# define UNDER 0000000 /* No extra bits to do both */ 765# define BOLD 0000000 /* Bold flag */ 766# define STANDOUT META /* Standout flag */ 767# define LITERAL 0000000 /* Literal character flag */ 768# define ATTRIBUTES 0200 /* The bits used for attributes */ 769# define INVALID_BYTE 0 770# define CHAR 0000177 /* Mask to mask out the character */ 771#endif 772#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) 773 774# define MAX_UTF32 0x7FFFFFFF /* max UTF32 is U+7FFFFFFF */ 775 776EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 777 778/* 779 * Each level of input has a buffered input structure. 780 * There are one or more blocks of buffered input for each level, 781 * exactly one if the input is seekable and tell is available. 782 * In other cases, the shell buffers enough blocks to keep all loops 783 * in the buffer. 784 * 785 * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but 786 * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for 787 * fbuf indexing). 788 * 789 * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there 790 * is no difference between byte and character offsets. 791 */ 792EXTERN struct Bin { 793 off_t Bfseekp; /* Seek pointer, generally != lseek() value */ 794 off_t Bfbobp; /* Seekp of beginning of buffers */ 795 off_t Bfeobp; /* Seekp of end of buffers */ 796 int Bfblocks; /* Number of buffer blocks */ 797 Char **Bfbuf; /* The array of buffer blocks */ 798#ifdef WIDE_STRINGS 799 /* Number of bytes in each character if (cantell) */ 800 unsigned char Bfclens[BUFSIZE + 1]; 801#endif 802} B; 803 804/* 805 * This structure allows us to seek inside aliases 806 */ 807struct Ain { 808 int type; 809#define TCSH_I_SEEK 0 /* Invalid seek */ 810#define TCSH_A_SEEK 1 /* Alias seek */ 811#define TCSH_F_SEEK 2 /* File seek */ 812#define TCSH_E_SEEK 3 /* Eval seek */ 813 union { 814 off_t _f_seek; /* A byte offset if (cantell) */ 815 Char* _c_seek; 816 } fc; 817#define f_seek fc._f_seek 818#define c_seek fc._c_seek 819 Char **a_seek; 820} ; 821 822extern int aret; /* Type of last char returned */ 823#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 824 (a)->f_seek == (b)->f_seek && \ 825 (a)->a_seek == (b)->a_seek) 826 827#define fseekp B.Bfseekp 828#define fbobp B.Bfbobp 829#define feobp B.Bfeobp 830#define fblocks B.Bfblocks 831#define fbuf B.Bfbuf 832#define fclens B.Bfclens 833 834/* 835 * The shell finds commands in loops by reseeking the input 836 * For whiles, in particular, it reseeks to the beginning of the 837 * line the while was on; hence the while placement restrictions. 838 */ 839EXTERN struct Ain lineloc; 840 841EXTERN int cantell; /* Is current source tellable ? */ 842 843/* 844 * Input lines are parsed into doubly linked circular 845 * lists of words of the following form. 846 */ 847struct wordent { 848 Char *word; 849 struct wordent *prev; 850 struct wordent *next; 851}; 852 853/* 854 * During word building, both in the initial lexical phase and 855 * when expanding $ variable substitutions, expansion by `!' and `$' 856 * must be inhibited when reading ahead in routines which are themselves 857 * processing `!' and `$' expansion or after characters such as `\' or in 858 * quotations. The following flags are passed to the getC routines 859 * telling them which of these substitutions are appropriate for the 860 * next character to be returned. 861 */ 862#define DODOL 1 863#define DOEXCL 2 864#define DOALL DODOL|DOEXCL 865 866/* 867 * Labuf implements a general buffer for lookahead during lexical operations. 868 * Text which is to be placed in the input stream can be stuck here. 869 * We stick parsed ahead $ constructs during initial input, 870 * process id's from `$$', and modified variable values (from qualifiers 871 * during expansion in sh.dol.c) here. 872 */ 873extern struct Strbuf labuf; 874EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ 875 876/* 877 * Parser structure 878 * 879 * Each command is parsed to a tree of command structures and 880 * flags are set bottom up during this process, to be propagated down 881 * as needed during the semantics/exeuction pass (sh.sem.c). 882 */ 883struct command { 884 unsigned char t_dtyp; /* Type of node */ 885#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 886#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 887#define NODE_PIPE 3 /* t_dlef | t_drit */ 888#define NODE_LIST 4 /* t_dlef ; t_drit */ 889#define NODE_OR 5 /* t_dlef || t_drit */ 890#define NODE_AND 6 /* t_dlef && t_drit */ 891 unsigned char t_nice; /* Nice value */ 892#ifdef apollo 893 unsigned char t_systype; /* System environment */ 894#endif 895 unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 896/* save these when re-doing */ 897#ifndef apollo 898#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 899#else 900#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 901#endif 902#define F_AMPERSAND (1<<0) /* executes in background */ 903#define F_APPEND (1<<1) /* output is redirected >> */ 904#define F_PIPEIN (1<<2) /* input is a pipe */ 905#define F_PIPEOUT (1<<3) /* output is a pipe */ 906#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 907#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 908/* spare */ 909#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 910#define F_OVERWRITE (1<<8) /* output was ! */ 911#define F_READ (1<<9) /* input redirection is << */ 912#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 913#define F_NICE (1<<11) /* t_nice is meaningful */ 914#define F_NOHUP (1<<12) /* nohup this command */ 915#define F_TIME (1<<13) /* time this command */ 916#define F_BACKQ (1<<14) /* command is in `` */ 917#define F_HUP (1<<15) /* hup this command */ 918#ifdef apollo 919#define F_VER (1<<16) /* execute command under SYSTYPE */ 920#endif 921 union { 922 Char *T_dlef; /* Input redirect word */ 923 struct command *T_dcar; /* Left part of list/pipe */ 924 } L; 925 union { 926 Char *T_drit; /* Output redirect word */ 927 struct command *T_dcdr; /* Right part of list/pipe */ 928 } R; 929#define t_dlef L.T_dlef 930#define t_dcar L.T_dcar 931#define t_drit R.T_drit 932#define t_dcdr R.T_dcdr 933 Char **t_dcom; /* Command/argument vector */ 934 struct command *t_dspr; /* Pointer to ()'d subtree */ 935}; 936 937 938/* 939 * The keywords for the parser 940 */ 941#define TC_BREAK 0 942#define TC_BRKSW 1 943#define TC_CASE 2 944#define TC_DEFAULT 3 945#define TC_ELSE 4 946#define TC_END 5 947#define TC_ENDIF 6 948#define TC_ENDSW 7 949#define TC_EXIT 8 950#define TC_FOREACH 9 951#define TC_GOTO 10 952#define TC_IF 11 953#define TC_LABEL 12 954#define TC_LET 13 955#define TC_SET 14 956#define TC_SWITCH 15 957#define TC_TEST 16 958#define TC_THEN 17 959#define TC_WHILE 18 960 961/* 962 * These are declared here because they want to be 963 * initialized in sh.init.c (to allow them to be made readonly) 964 */ 965 966#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 967 /* Avoid hpux ansi mode spurious warnings */ 968typedef void (*bfunc_t) (); 969#else 970typedef void (*bfunc_t) (Char **, struct command *); 971#endif /* hpux && __STDC__ && !__GNUC__ */ 972 973extern const struct biltins { 974 const char *bname; 975 bfunc_t bfunct; 976 int minargs, maxargs; 977} bfunc[]; 978extern int nbfunc; 979#ifdef WINNT_NATIVE 980extern struct biltins nt_bfunc[]; 981extern int nt_nbfunc; 982#endif /* WINNT_NATIVE*/ 983extern int bequiet; 984 985extern struct srch { 986 const char *s_name; 987 int s_value; 988} srchn[]; 989extern int nsrchn; 990 991/* 992 * Structure defining the existing while/foreach loops at this 993 * source level. Loops are implemented by seeking back in the 994 * input. For foreach (fe), the word list is attached here. 995 */ 996EXTERN struct whyle { 997 struct Ain w_start; /* Point to restart loop */ 998 struct Ain w_end; /* End of loop (0 if unknown) */ 999 Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 1000 Char *w_fename; /* Name for fe */ 1001 struct whyle *w_next; /* Next (more outer) loop */ 1002} *whyles; 1003 1004/* 1005 * Variable structure 1006 * 1007 * Aliases and variables are stored in AVL balanced binary trees. 1008 */ 1009EXTERN struct varent { 1010 Char **vec; /* Array of words which is the value */ 1011 Char *v_name; /* Name of variable/alias */ 1012 int v_flags; /* Flags */ 1013#define VAR_ALL -1 1014#define VAR_READONLY 1 1015#define VAR_READWRITE 2 1016#define VAR_NOGLOB 4 1017#define VAR_FIRST 32 1018#define VAR_LAST 64 1019 struct varent *v_link[3]; /* The links, see below */ 1020 int v_bal; /* Balance factor */ 1021} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 1022 1023#define v_left v_link[0] 1024#define v_right v_link[1] 1025#define v_parent v_link[2] 1026 1027#define adrof(v) adrof1(v, &shvhed) 1028#define varval(v) value1(v, &shvhed) 1029 1030/* 1031 * The following are for interfacing redo substitution in 1032 * aliases to the lexical routines. 1033 */ 1034EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 1035EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 1036EXTERN Char **alvec IZERO_STRUCT, 1037 *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 1038 1039/* 1040 * Filename/command name expansion variables 1041 */ 1042 1043#ifndef MAXPATHLEN 1044# ifdef PATH_MAX 1045# define MAXPATHLEN PATH_MAX 1046# else 1047# define MAXPATHLEN 2048 1048# endif 1049#endif /* MAXPATHLEN */ 1050 1051#ifndef HAVENOLIMIT 1052/* 1053 * resource limits 1054 */ 1055extern struct limits { 1056 int limconst; 1057 const char *limname; 1058 int limdiv; 1059 const char *limscale; 1060} limits[]; 1061#endif /* !HAVENOLIMIT */ 1062 1063/* 1064 * History list 1065 * 1066 * Each history list entry contains an embedded wordlist 1067 * from the scanner, a number for the event, and a reference count 1068 * to aid in discarding old entries. 1069 * 1070 * Essentially "invisible" entries are put on the history list 1071 * when history substitution includes modifiers, and thrown away 1072 * at the next discarding since their event numbers are very negative. 1073 */ 1074EXTERN struct Hist { 1075 struct wordent Hlex; 1076 int Hnum; /* eventno when inserted into history list */ 1077 int Href; 1078 time_t Htime; 1079 Char *histline; 1080 struct Hist *Hnext, *Hprev; /* doubly linked list */ 1081 unsigned Hhash; /* hash value of command line */ 1082} Histlist IZERO_STRUCT; 1083 1084extern struct wordent paraml; /* Current lexical word list */ 1085EXTERN int eventno; /* Next events number */ 1086EXTERN int lastev; /* Last event reference (default) */ 1087 1088EXTERN Char HIST; /* history invocation character */ 1089EXTERN Char HISTSUB; /* auto-substitute character */ 1090EXTERN Char PRCH; /* Prompt symbol for regular users */ 1091EXTERN Char PRCHROOT; /* Prompt symbol for root */ 1092 1093/* 1094 * For operating systems with single case filenames (OS/2) 1095 */ 1096#ifdef CASE_INSENSITIVE 1097# ifdef WIDE_STRINGS 1098# define samecase(x) (towlower(x)) 1099# else 1100# define samecase(x) (isupper((unsigned char)(x)) ? \ 1101 tolower((unsigned char)(x)) : (x)) 1102# endif 1103#else 1104# define samecase(x) (x) 1105#endif /* CASE_INSENSITIVE */ 1106 1107/* 1108 * strings.h: 1109 */ 1110#ifndef SHORT_STRINGS 1111#define Strchr(a, b) strchr(a, b) 1112#define Strrchr(a, b) strrchr(a, b) 1113#define Strcat(a, b) strcat(a, b) 1114#define Strncat(a, b, c) strncat(a, b, c) 1115#define Strcpy(a, b) strcpy(a, b) 1116#define Strncpy(a, b, c) strncpy(a, b, c) 1117#define Strlen(a) strlen(a) 1118#define Strcmp(a, b) strcmp(a, b) 1119#define Strncmp(a, b, c) strncmp(a, b, c) 1120#define Strcasecmp(a, b) strcasecmp(a, b) 1121 1122#define Strspl(a, b) strspl(a, b) 1123#define Strnsave(a, b) strnsave(a, b) 1124#define Strsave(a) strsave(a) 1125#define Strend(a) strend(a) 1126#define Strstr(a, b) strstr(a, b) 1127 1128#define str2short(a) (a) 1129#define blk2short(a) saveblk(a) 1130#define short2blk(a) saveblk(a) 1131#define short2str(a) caching_strip(a) 1132#else 1133#if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS) 1134#define Strchr(a, b) wcschr(a, b) 1135#define Strrchr(a, b) wcsrchr(a, b) 1136#define Strcat(a, b) wcscat(a, b) 1137#define Strncat(a, b, c) wcsncat(a, b, c) 1138#define Strcpy(a, b) wcscpy(a, b) 1139#define Strncpy(a, b, c) wcsncpy(a, b, c) 1140#define Strlen(a) wcslen(a) 1141#define Strcmp(a, b) wcscmp(a, b) 1142#define Strncmp(a, b, c) wcsncmp(a, b, c) 1143#else 1144#define Strchr(a, b) s_strchr(a, b) 1145#define Strrchr(a, b) s_strrchr(a, b) 1146#define Strcat(a, b) s_strcat(a, b) 1147#define Strncat(a, b, c) s_strncat(a, b, c) 1148#define Strcpy(a, b) s_strcpy(a, b) 1149#define Strncpy(a, b, c) s_strncpy(a, b, c) 1150#define Strlen(a) s_strlen(a) 1151#define Strcmp(a, b) s_strcmp(a, b) 1152#define Strncmp(a, b, c) s_strncmp(a, b, c) 1153#endif 1154#define Strcasecmp(a, b) s_strcasecmp(a, b) 1155 1156#define Strspl(a, b) s_strspl(a, b) 1157#define Strnsave(a, b) s_strnsave(a, b) 1158#define Strsave(a) s_strsave(a) 1159#define Strend(a) s_strend(a) 1160#define Strstr(a, b) s_strstr(a, b) 1161#endif 1162 1163/* 1164 * setname is a macro to save space (see sh.err.c) 1165 */ 1166EXTERN const char *bname; 1167 1168#define setname(a) (bname = (a)) 1169 1170#ifdef VFORK 1171EXTERN Char *Vsav; 1172EXTERN Char *Vdp; 1173EXTERN Char *Vexpath; 1174EXTERN char **Vt; 1175#endif /* VFORK */ 1176 1177EXTERN Char **evalvec; 1178EXTERN Char *evalp; 1179 1180extern struct mesg { 1181 const char *iname; /* name from /usr/include */ 1182 const char *pname; /* print name */ 1183} mesg[]; 1184 1185/* word_chars is set by default to WORD_CHARS (or WORD_CHARS_VI) but can 1186 be overridden by the wordchars variable--if unset, reverts to 1187 WORD_CHARS (or WORD_CHARS_VI) */ 1188 1189EXTERN Char *word_chars; 1190 1191#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 1192#define WORD_CHARS_VI "_" /* default chars besides alnums in words */ 1193 1194EXTERN Char *STR_SHELLPATH; 1195 1196#ifdef _PATH_BSHELL 1197EXTERN Char *STR_BSHELL; 1198#endif 1199EXTERN Char *STR_WORD_CHARS; 1200EXTERN Char *STR_WORD_CHARS_VI; 1201EXTERN Char **STR_environ IZERO; 1202 1203extern int dont_free; /* Tell free that we are in danger if we free */ 1204 1205extern Char *INVPTR; 1206extern Char **INVPPTR; 1207 1208extern char *progname; 1209extern int tcsh; 1210extern int xlate_cr; 1211extern int output_raw; 1212extern int lbuffed; 1213extern time_t Htime; 1214extern int numeof; 1215extern int insource; 1216extern char linbuf[]; 1217extern char *linp; 1218extern int nsig; 1219#ifdef VFORK 1220extern int use_fork; 1221#endif 1222extern int tellwhat; 1223extern int NoNLSRebind; 1224#if !HAVE_DECL_ENVIRON 1225extern char **environ; 1226#endif 1227 1228#include "tc.h" 1229 1230#ifndef WINNT_NATIVE 1231# ifdef NLS_CATALOGS 1232# ifdef HAVE_FEATURES_H 1233# include <features.h> 1234# endif 1235# ifdef HAVE_NL_LANGINFO 1236# include <langinfo.h> 1237# endif 1238# ifdef __uxps__ 1239# define gettxt gettxt_ds 1240# endif 1241# include <nl_types.h> 1242# ifdef __uxps__ 1243# undef gettxt 1244# endif 1245EXTERN nl_catd catd; 1246# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) 1247# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) 1248# else 1249# define CGETS(b, c, d) xcatgets(catd, b, c, d) 1250# endif 1251# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1252# else 1253# define CGETS(b, c, d) d 1254# define CSAVS(b, c, d) d 1255# endif 1256#else /* WINNT_NATIVE */ 1257# define CGETS(b, c, d) nt_cgets( b, c, d) 1258# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1259#endif /* WINNT_NATIVE */ 1260 1261#if defined(FILEC) 1262extern int filec; 1263#endif /* FILEC */ 1264 1265#include "sh.decls.h" 1266/* 1267 * Since on some machines characters are unsigned, and the signed 1268 * keyword is not universally implemented, we treat all characters 1269 * as unsigned and sign extend them where we need. 1270 */ 1271#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 1272 1273/* 1274 * explanation for use by the "--help" option 1275 */ 1276#define HELP_STRING "\ 1277-b file batch mode, read and execute commands from `file' \n\ 1278-c command run `command' from next argument \n\ 1279-d load directory stack from `~/.cshdirs' \n\ 1280-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ 1281-e exit on any error \n\ 1282-f start faster by ignoring the start-up file \n\ 1283-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ 1284-i interactive, even when input is not from a terminal \n\ 1285-l act as a login shell, must be the only option specified \n\ 1286-m load the start-up file, whether or not owned by effective user \n\ 1287-n file no execute mode, just check syntax of the following `file' \n\ 1288-q accept SIGQUIT for running under a debugger \n\ 1289-s read commands from standard input \n\ 1290-t read one line from standard input \n\ 1291-v echo commands after history substitution \n\ 1292-V like -v but including commands read from the start-up file \n\ 1293-x echo commands immediately before execution \n\ 1294-X like -x but including commands read from the start-up file \n\ 1295--help print this message and exit \n\ 1296--version print the version shell variable and exit \n\ 1297\nSee the tcsh(1) manual page for detailed information.\n" 1298 1299#include "tc.nls.h" 1300 1301#endif /* _h_sh */ 1302