sh.h revision 316957
1/* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.178 2016/09/12 16:33:54 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#ifdef _MSC_VER 131#define TCSH_PTRDIFF_T_FMT "I" 132#else 133#define TCSH_PTRDIFF_T_FMT "t" 134#endif 135/* Elide unused argument warnings */ 136#define USE(a) (void) (a) 137#define TCSH_IGNORE(a) tcsh_ignore((intptr_t)a) 138static __inline void tcsh_ignore(intptr_t a) 139{ 140 USE(a); 141} 142 143/* 144 * Return true if the path is absolute 145 */ 146#if defined(WINNT_NATIVE) 147# define ABSOLUTEP(p) ((p)[0] == '/' || \ 148 (Isalpha((p)[0]) && (p)[1] == ':')) 149#elif defined(__CYGWIN__) 150# define ABSOLUTEP(p) ((p)[0] == '/' || \ 151 (Isalpha((p)[0]) && (p)[1] == ':' && \ 152 ((p)[2] == '\0' || (p)[2] == '/'))) 153#else /* !WINNT_NATIVE && !__CYGWIN__ */ 154# define ABSOLUTEP(p) (*(p) == '/') 155#endif /* WINNT_NATIVE || __CYGWIN__ */ 156 157/* 158 * Fundamental definitions which may vary from system to system. 159 * 160 * BUFSIZE The i/o buffering size; also limits word size 161 * MAILINTVL How often to mailcheck; more often is more expensive 162 */ 163#ifdef BUFSIZE 164# if BUFSIZE < 4096 165# undef BUFSIZE 166# define BUFSIZE 4096 /* buffer size should be no less than this */ 167# endif 168#else 169# define BUFSIZE 4096 170#endif /* BUFSIZE */ 171 172#define FORKSLEEP 10 /* delay loop on non-interactive fork failure */ 173#define MAILINTVL 600 /* 10 minutes */ 174 175#ifndef INBUFSIZE 176# define INBUFSIZE 2*BUFSIZE /* Num input characters on the command line */ 177#endif /* INBUFSIZE */ 178 179 180/* 181 * What our builtin echo looks like 182 */ 183#define NONE_ECHO 0 184#define BSD_ECHO 1 185#define SYSV_ECHO 2 186#define BOTH_ECHO (BSD_ECHO|SYSV_ECHO) 187 188#ifndef ECHO_STYLE 189# if SYSVREL > 0 190# define ECHO_STYLE SYSV_ECHO 191# else /* SYSVREL == 0 */ 192# define ECHO_STYLE BSD_ECHO 193# endif /* SYSVREL */ 194#endif /* ECHO_STYLE */ 195 196/* values for noclobber */ 197#define NOCLOBBER_DEFAULT 1 198#define NOCLOBBER_NOTEMPTY 2 199#define NOCLOBBER_ASK 4 200 201/* 202 * The shell moves std in/out/diag and the old std input away from units 203 * 0, 1, and 2 so that it is easy to set up these standards for invoked 204 * commands. 205 */ 206#define FSAFE 5 /* We keep the first 5 descriptors untouched */ 207#define FSHTTY 15 /* /dev/tty when manip pgrps */ 208#define FSHIN 16 /* Preferred desc for shell input */ 209#define FSHOUT 17 /* ... shell output */ 210#define FSHDIAG 18 /* ... shell diagnostics */ 211#define FOLDSTD 19 /* ... old std input */ 212 213#ifdef PROF 214#define xexit(n) done(n) 215#endif 216 217#ifdef cray 218# define word word_t /* sys/types.h defines word.. bad move! */ 219#endif 220 221#include <sys/types.h> 222 223#ifdef cray 224# undef word 225#endif 226 227/* 228 * Path separator in environment variables 229 */ 230#ifndef PATHSEP 231# if defined(__EMX__) || defined(WINNT_NATIVE) 232# define PATHSEP ';' 233# else /* unix */ 234# define PATHSEP ':' 235# endif /* __EMX__ || WINNT_NATIVE */ 236#endif /* !PATHSEP */ 237 238#if defined(__HP_CXD_SPP) && !defined(__hpux) 239# include <sys/cnx_stat.h> 240# define stat stat64 241# define fstat fstat64 242# define lstat lstat64 243#endif /* __HP_CXD_SPP && !__hpux */ 244 245#ifdef HAVE_LONG_LONG 246typedef long long tcsh_number_t; 247#else 248typedef long tcsh_number_t; 249#endif 250/* 251 * This macro compares the st_dev field of struct stat. On aix on ibmESA 252 * st_dev is a structure, so comparison does not work. 253 */ 254#ifndef DEV_DEV_COMPARE 255# define DEV_DEV_COMPARE(x,y) ((x) == (y)) 256#endif /* DEV_DEV_COMPARE */ 257 258#ifdef _SEQUENT_ 259# include <sys/procstats.h> 260#endif /* _SEQUENT_ */ 261#if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE) 262# include <sys/times.h> 263#endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */ 264 265#ifdef NLS 266# include <locale.h> 267#endif /* NLS */ 268 269#if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__) 270# include <sys/param.h> 271#endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */ 272#include <sys/stat.h> 273 274#if defined(BSDTIMES) || defined(BSDLIMIT) 275# include <sys/time.h> 276# if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__) 277# include "/usr/ucbinclude/sys/resource.h" 278# else 279# ifdef convex 280# define sysrusage cvxrusage 281# include <sys/sysinfo.h> 282# else 283# define sysrusage rusage 284# include <sys/resource.h> 285# endif /* convex */ 286# endif /* SYSVREL>3 */ 287#endif /* BSDTIMES */ 288 289#ifndef WINNT_NATIVE 290# ifndef POSIX 291# ifdef TERMIO 292# include <termio.h> 293# else /* SGTTY */ 294# include <sgtty.h> 295# endif /* TERMIO */ 296# else /* POSIX */ 297# ifndef _UWIN 298# include <termios.h> 299# else 300# include <termio.h> 301# endif /* _UWIN */ 302# if SYSVREL > 3 || defined(__linux__) 303# undef TIOCGLTC /* we don't need those, since POSIX has them */ 304# undef TIOCSLTC 305# undef CSWTCH 306# define CSWTCH _POSIX_VDISABLE /* So job control works */ 307# endif /* SYSVREL > 3 */ 308# endif /* POSIX */ 309#endif /* WINNT_NATIVE */ 310 311#ifdef sonyrisc 312# include <sys/ttold.h> 313#endif /* sonyrisc */ 314 315#if defined(POSIX) && !defined(WINNT_NATIVE) 316# include <unistd.h> 317 318/* 319 * the gcc+protoize version of <stdlib.h> 320 * redefines malloc(), so we define the following 321 * to avoid it. 322 */ 323# if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) 324# define NO_FIX_MALLOC 325# include <stdlib.h> 326# else /* glibc */ 327# define _GNU_STDLIB_H 328# define malloc __malloc 329# define free __free 330# define calloc __calloc 331# define realloc __realloc 332# include <stdlib.h> 333# undef malloc 334# undef free 335# undef calloc 336# undef realloc 337# endif /* glibc || sgi */ 338#endif /* POSIX && !WINNT_NATIVE */ 339#include <limits.h> 340 341#if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) 342# if !defined(pyr) && !defined(stellar) 343# include <time.h> 344# ifdef _MINIX 345# define HZ CLOCKS_PER_SEC 346# endif /* _MINIX */ 347# endif /* !pyr && !stellar */ 348#endif /* SYSVREL > 0 || _IBMR2 */ 349 350/* In the following ifdef the DECOSF1 has been commented so that later 351 * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions... 352 */ 353#if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO)) 354# if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) 355# include <sys/ioctl.h> 356# if SYSVREL > 3 || defined(__linux__) 357# undef TIOCGLTC /* we don't need those, since POSIX has them */ 358# undef TIOCSLTC 359# undef CSWTCH 360# define CSWTCH _POSIX_VDISABLE /* So job control works */ 361# endif /* SYSVREL > 3 */ 362# endif 363#endif 364 365#if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX) 366#undef CSWTCH 367#define CSWTCH _POSIX_VDISABLE 368#endif 369 370#if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__) 371# include <sys/filio.h> 372#endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */ 373 374#if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D) 375# include <sys/file.h> 376#endif /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */ 377 378#if !defined(O_RDONLY) || !defined(O_NDELAY) 379# include <fcntl.h> 380#endif 381 382#include <errno.h> 383 384#include <setjmp.h> 385 386#include <stdarg.h> 387 388#ifdef HAVE_DIRENT_H 389# include <dirent.h> 390#else 391# ifdef HAVE_NDIR_H 392# include <ndir.h> 393# else 394# include <sys/dir.h> 395# endif 396# define dirent direct 397#endif /* HAVE_DIRENT_H */ 398#ifndef HAVE_STRUCT_DIRENT_D_INO 399# define d_ino d_fileno 400#endif 401#if defined(hpux) || defined(sgi) || defined(OREO) 402# include <stdio.h> /* So the fgetpwent() prototypes work */ 403#endif /* hpux || sgi || OREO */ 404#ifndef WINNT_NATIVE 405#include <pwd.h> 406#include <grp.h> 407#endif /* WINNT_NATIVE */ 408#ifdef HAVE_SHADOW_H 409# include <shadow.h> 410#endif /* HAVE_SHADOW_H */ 411#ifdef HAVE_AUTH_H 412# include <auth.h> 413#endif /* HAVE_AUTH_H */ 414#if defined(BSD) && !defined(POSIX) 415# include <strings.h> 416# define strchr(a, b) index(a, b) 417# define strrchr(a, b) rindex(a, b) 418#else 419# include <string.h> 420#endif /* BSD */ 421 422/* 423 * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not 424 * include it yet, so we include it here 425 */ 426#if defined(sgi) && SYSVREL > 3 427# include <sys/cdefs.h> 428#endif /* sgi && SYSVREL > 3 */ 429 430#ifdef REMOTEHOST 431# ifdef ISC 432# undef MAXHOSTNAMELEN /* Busted headers? */ 433# endif 434 435# include <netinet/in.h> 436# include <arpa/inet.h> 437# include <sys/socket.h> 438# if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY) 439# if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */ 440# if !defined(sgi) 441# define INET6 442# endif /* sgi */ 443# endif /* __APPLE__ */ 444# endif 445# include <sys/uio.h> /* For struct iovec */ 446#endif /* REMOTEHOST */ 447 448#ifdef PURIFY 449/* exit normally, allowing purify to trace leaks */ 450# define _exit exit 451#endif /* !PURIFY */ 452 453/* 454 * ASCII vs. EBCDIC 455 */ 456#if 'Z' - 'A' == 25 457# ifndef IS_ASCII 458# define IS_ASCII 459# endif 460#endif 461 462#include "sh.types.h" 463 464#if !HAVE_DECL_GETPGRP 465# ifndef GETPGRP_VOID 466extern pid_t getpgrp (int); 467# else 468extern pid_t getpgrp (void); 469# endif 470#endif 471 472#ifndef lint 473typedef ptr_t memalign_t; 474#else 475typedef union { 476 char am_char, *am_char_p; 477 short am_short, *am_short_p; 478 int am_int, *am_int_p; 479 long am_long, *am_long_p; 480 float am_float, *am_float_p; 481 double am_double, *am_double_p; 482} *memalign_t; 483 484# define malloc lint_malloc 485# define free lint_free 486# define realloc lint_realloc 487# define calloc lint_calloc 488#endif 489 490#ifdef SYSMALLOC 491# define xmalloc(i) smalloc(i) 492# define xrealloc(p, i) srealloc(p, i) 493# define xcalloc(n, s) scalloc(n, s) 494# define xfree sfree 495#else 496# define xmalloc(i) malloc(i) 497# define xrealloc(p, i) realloc(p, i) 498# define xcalloc(n, s) calloc(n, s) 499# define xfree free 500#endif /* SYSMALLOC */ 501#include "sh.char.h" 502#include "sh.err.h" 503#include "sh.dir.h" 504#include "sh.proc.h" 505 506#include "pathnames.h" 507 508 509/* 510 * C shell 511 * 512 * Bill Joy, UC Berkeley 513 * October, 1978; May 1980 514 * 515 * Jim Kulp, IIASA, Laxenburg Austria 516 * April, 1980 517 */ 518 519#ifdef HESIOD 520# include <hesiod.h> 521#endif /* HESIOD */ 522 523#ifdef REMOTEHOST 524# include <netdb.h> 525#endif /* REMOTEHOST */ 526 527#ifndef MAXHOSTNAMELEN 528# ifdef HOST_NAME_MAX 529# define MAXHOSTNAMELEN (HOST_NAME_MAX + 1) 530# elif defined(SCO) && (SYSVREL > 3) 531# include <sys/socket.h> 532# else 533# define MAXHOSTNAMELEN 256 534# endif 535#endif /* MAXHOSTNAMELEN */ 536 537 538 539#define eq(a, b) (Strcmp(a, b) == 0) 540 541/* globone() flags */ 542#define G_ERROR 0 /* default action: error if multiple words */ 543#define G_IGNORE 1 /* ignore the rest of the words */ 544#define G_APPEND 2 /* make a sentence by cat'ing the words */ 545 546/* 547 * Global flags 548 */ 549EXTERN int chkstop IZERO; /* Warned of stopped jobs... allow exit */ 550 551#if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD) 552# define CLOSE_ON_EXEC 553#else 554EXTERN int didcch IZERO; /* Have closed unused fd's for child */ 555#endif /* (FIOCLEX && FIONCLEX) || F_SETFD */ 556 557EXTERN int didfds IZERO; /* Have setup i/o fd's for child */ 558EXTERN int doneinp IZERO; /* EOF indicator after reset from readc */ 559EXTERN int exiterr IZERO; /* Exit if error or non-zero exit status */ 560EXTERN int child IZERO; /* Child shell ... errors cause exit */ 561EXTERN int haderr IZERO; /* Reset was because of an error */ 562EXTERN int intty IZERO; /* Input is a tty */ 563EXTERN int intact IZERO; /* We are interactive... therefore prompt */ 564EXTERN int justpr IZERO; /* Just print because of :p hist mod */ 565EXTERN int loginsh IZERO; /* We are a loginsh -> .login/.logout */ 566EXTERN int neednote IZERO; /* Need to pnotify() */ 567EXTERN int noexec IZERO; /* Don't execute, just syntax check */ 568EXTERN int pjobs IZERO; /* want to print jobs if interrupted */ 569EXTERN int setintr IZERO; /* Set interrupts on/off -> Wait intr... */ 570EXTERN int handle_interrupt IZERO;/* Are we currently handling an interrupt? */ 571EXTERN int havhash IZERO; /* path hashing is available */ 572EXTERN int editing IZERO; /* doing filename expansion and line editing */ 573EXTERN int noediting IZERO; /* initial $term defaulted to noedit */ 574EXTERN int bslash_quote IZERO;/* PWP: tcsh-style quoting? (in sh.c) */ 575EXTERN int anyerror IZERO; /* propagate errors from pipelines/backq */ 576EXTERN int compat_expr IZERO;/* csh-style expressions? */ 577EXTERN int isoutatty IZERO; /* is SHOUT a tty */ 578EXTERN int isdiagatty IZERO;/* is SHDIAG a tty */ 579EXTERN int is1atty IZERO; /* is file descriptor 1 a tty (didfds mode) */ 580EXTERN int is2atty IZERO; /* is file descriptor 2 a tty (didfds mode) */ 581EXTERN int arun IZERO; /* Currently running multi-line-aliases */ 582EXTERN int implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */ 583EXTERN int cdtohome IZERO; /* cd without args goes home */ 584EXTERN int inheredoc IZERO; /* Currently parsing a heredoc */ 585EXTERN int no_clobber IZERO; /* no clobber enabled? 1=yes 2=notempty, 4=ask*/ 586/* We received a window change event */ 587EXTERN volatile sig_atomic_t windowchg IZERO; 588#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE) 589EXTERN int dspmbyte_ls; 590#endif 591 592/* 593 * Global i/o info 594 */ 595EXTERN Char *arginp IZERO; /* Argument input for sh -c and internal `xx` */ 596EXTERN int onelflg IZERO; /* 2 -> need line for -t, 1 -> exit on read */ 597extern Char *ffile; /* Name of shell file for $0 */ 598extern int dolzero; /* if $?0 should return true... */ 599 600extern char *seterr; /* Error message from scanner/parser */ 601#ifndef errno 602extern int errno; /* Error from C library routines */ 603#endif 604extern int exitset; 605/* Temp name for << shell files in /tmp, for xfree() */ 606EXTERN Char *shtemp IZERO; 607 608#ifdef BSDTIMES 609EXTERN struct timeval time0; /* Time at which the shell started */ 610EXTERN struct sysrusage ru0; 611#else 612# ifdef _SEQUENT_ 613EXTERN timeval_t time0; /* time at which shell started */ 614EXTERN struct process_stats ru0; 615# else /* _SEQUENT_ */ 616# ifndef POSIX 617EXTERN time_t time0; /* time at which shell started */ 618# else /* POSIX */ 619EXTERN clock_t time0; /* time at which shell started */ 620EXTERN clock_t clk_tck; 621# endif /* POSIX */ 622EXTERN struct tms shtimes; /* shell and child times for process timing */ 623# endif /* _SEQUENT_ */ 624EXTERN time_t seconds0; 625#endif /* BSDTIMES */ 626 627#ifndef HZ 628# define HZ 100 /* for division into seconds */ 629#endif 630 631/* 632 * Miscellany 633 */ 634EXTERN pid_t mainpid; /* pid of the main shell ($$) */ 635EXTERN Char *doldol; /* Character pid for $$ */ 636EXTERN pid_t backpid; /* pid of the last background job */ 637 638 639/* 640 * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now 641 * cause pid's could be unsigned and that would break our -1 flag, and 642 * uid_t and gid_t are not defined in all the systems so I would have to 643 * make special cases for them. In the future... 644 */ 645EXTERN uid_t uid, euid; /* Invokers real and effective */ 646EXTERN gid_t gid, egid; /* User and group ids */ 647EXTERN pid_t opgrp, /* Initial pgrp and tty pgrp */ 648 shpgrp, /* Pgrp of shell */ 649 tpgrp; /* Terminal process group */ 650 /* If tpgrp is -1, leave tty alone! */ 651 652EXTERN Char *Prompt; /* The actual printed prompt or NULL */ 653EXTERN Char *RPrompt; /* Right-hand side prompt or NULL */ 654 655/* 656 * To be able to redirect i/o for builtins easily, the shell moves the i/o 657 * descriptors it uses away from 0,1,2. 658 * Ideally these should be in units which are closed across exec's 659 * (this saves work) but for version 6, this is not usually possible. 660 * The desired initial values for these descriptors are defined in 661 * sh.local.h. 662 */ 663EXTERN int SHIN IZERO; /* Current shell input (script) */ 664EXTERN int SHOUT IZERO; /* Shell output */ 665EXTERN int SHDIAG IZERO; /* Diagnostic output... shell errs go here */ 666EXTERN int OLDSTD IZERO; /* Old standard input (def for cmds) */ 667 668 669#if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__) 670/* 671 * From: fadden@uts.amdahl.com (Andy McFadden) 672 * we need sigsetjmp for UTS4, but not UTS2.1 673 */ 674# define SIGSETJMP 675#endif 676 677/* 678 * Error control 679 * 680 * Errors in scanning and parsing set up an error message to be printed 681 * at the end and complete. Other errors always cause a reset. 682 * Because of source commands and .cshrc we need nested error catches. 683 */ 684 685#ifdef SIGSETJMP 686 typedef struct { sigjmp_buf j; } jmp_buf_t; 687# define setexit() sigsetjmp(reslab.j, 1) 688# define _reset() siglongjmp(reslab.j, 1) 689#else 690 typedef struct { jmp_buf j; } jmp_buf_t; 691# define setexit() setjmp(reslab.j) 692# define _reset() longjmp(reslab.j, 1) 693#endif 694 695#define getexit(a) (void) ((a) = reslab) 696#define resexit(a) (void) (reslab = (a)) 697 698#define cpybin(a, b) (void) ((a) = (b)) 699 700extern jmp_buf_t reslab; 701 702EXTERN Char *gointr; /* Label for an onintr transfer */ 703 704extern struct sigaction parintr; /* Parents interrupt catch */ 705extern struct sigaction parterm; /* Parents terminate catch */ 706 707/* 708 * Lexical definitions. 709 * 710 * All lexical space is allocated dynamically. 711 * The eighth/sixteenth bit of characters is used to prevent recognition, 712 * and eventually stripped. 713 */ 714#define META 0200 715#define ASCII 0177 716#ifdef WIDE_STRINGS /* Implies SHORT_STRINGS */ 717/* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */ 718/* 719 * Notice 720 * 721 * By fix for handling unicode name file, 32nd bit is used. 722 * We need use '&' instead of '> or <' when comparing with INVALID_BYTE etc.. 723 * Cast to uChar is not recommended, 724 * becase Char is 4bytes but uChar is 8bytes on I32LP64. */ 725# define QUOTE 0x80000000 726# define TRIM 0x7FFFFFFF /* Mask to strip quote bit */ 727# define UNDER 0x08000000 /* Underline flag */ 728# define BOLD 0x04000000 /* Bold flag */ 729# define STANDOUT 0x02000000 /* Standout flag */ 730# define LITERAL 0x01000000 /* Literal character flag */ 731# define ATTRIBUTES 0x0F000000 /* The bits used for attributes */ 732# define INVALID_BYTE 0xF0000000 /* Invalid character on input */ 733# ifdef SOLARIS2 734# define CHAR 0x30FFFFFF /* Mask to mask out the character */ 735# else 736# define CHAR 0x00FFFFFF /* Mask to mask out the character */ 737# endif 738#elif defined (SHORT_STRINGS) 739# define QUOTE ((Char) 0100000)/* 16nth char bit used for 'ing */ 740# define TRIM 0073777 /* Mask to strip quote/lit bit */ 741# define UNDER 0040000 /* Underline flag */ 742# define BOLD 0020000 /* Bold flag */ 743# define STANDOUT 0010000 /* Standout flag */ 744# define LITERAL 0004000 /* Literal character flag */ 745# define ATTRIBUTES 0074000 /* The bits used for attributes */ 746# define INVALID_BYTE 0 747# define CHAR 0000377 /* Mask to mask out the character */ 748#else 749# define QUOTE ((Char) 0200) /* Eighth char bit used for 'ing */ 750# define TRIM 0177 /* Mask to strip quote bit */ 751# define UNDER 0000000 /* No extra bits to do both */ 752# define BOLD 0000000 /* Bold flag */ 753# define STANDOUT META /* Standout flag */ 754# define LITERAL 0000000 /* Literal character flag */ 755# define ATTRIBUTES 0200 /* The bits used for attributes */ 756# define INVALID_BYTE 0 757# define CHAR 0000177 /* Mask to mask out the character */ 758#endif 759#define CHAR_DBWIDTH (LITERAL|(LITERAL-1)) 760 761# define MAX_UTF32 0x7FFFFFFF /* max UTF32 is U+7FFFFFFF */ 762 763EXTERN int AsciiOnly; /* If set only 7 bits expected in characters */ 764 765/* 766 * Each level of input has a buffered input structure. 767 * There are one or more blocks of buffered input for each level, 768 * exactly one if the input is seekable and tell is available. 769 * In other cases, the shell buffers enough blocks to keep all loops 770 * in the buffer. 771 * 772 * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but 773 * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for 774 * fbuf indexing). 775 * 776 * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there 777 * is no difference between byte and character offsets. 778 */ 779EXTERN struct Bin { 780 off_t Bfseekp; /* Seek pointer, generally != lseek() value */ 781 off_t Bfbobp; /* Seekp of beginning of buffers */ 782 off_t Bfeobp; /* Seekp of end of buffers */ 783 int Bfblocks; /* Number of buffer blocks */ 784 Char **Bfbuf; /* The array of buffer blocks */ 785#ifdef WIDE_STRINGS 786 /* Number of bytes in each character if (cantell) */ 787 unsigned char Bfclens[BUFSIZE + 1]; 788#endif 789} B; 790 791/* 792 * This structure allows us to seek inside aliases 793 */ 794struct Ain { 795 int type; 796#define TCSH_I_SEEK 0 /* Invalid seek */ 797#define TCSH_A_SEEK 1 /* Alias seek */ 798#define TCSH_F_SEEK 2 /* File seek */ 799#define TCSH_E_SEEK 3 /* Eval seek */ 800 union { 801 off_t _f_seek; /* A byte offset if (cantell) */ 802 Char* _c_seek; 803 } fc; 804#define f_seek fc._f_seek 805#define c_seek fc._c_seek 806 Char **a_seek; 807} ; 808 809extern int aret; /* Type of last char returned */ 810#define SEEKEQ(a, b) ((a)->type == (b)->type && \ 811 (a)->f_seek == (b)->f_seek && \ 812 (a)->a_seek == (b)->a_seek) 813 814#define fseekp B.Bfseekp 815#define fbobp B.Bfbobp 816#define feobp B.Bfeobp 817#define fblocks B.Bfblocks 818#define fbuf B.Bfbuf 819#define fclens B.Bfclens 820 821/* 822 * The shell finds commands in loops by reseeking the input 823 * For whiles, in particular, it reseeks to the beginning of the 824 * line the while was on; hence the while placement restrictions. 825 */ 826EXTERN struct Ain lineloc; 827 828EXTERN int cantell; /* Is current source tellable ? */ 829 830/* 831 * Input lines are parsed into doubly linked circular 832 * lists of words of the following form. 833 */ 834struct wordent { 835 Char *word; 836 struct wordent *prev; 837 struct wordent *next; 838}; 839 840/* 841 * During word building, both in the initial lexical phase and 842 * when expanding $ variable substitutions, expansion by `!' and `$' 843 * must be inhibited when reading ahead in routines which are themselves 844 * processing `!' and `$' expansion or after characters such as `\' or in 845 * quotations. The following flags are passed to the getC routines 846 * telling them which of these substitutions are appropriate for the 847 * next character to be returned. 848 */ 849#define DODOL 1 850#define DOEXCL 2 851#define DOALL DODOL|DOEXCL 852 853/* 854 * Labuf implements a general buffer for lookahead during lexical operations. 855 * Text which is to be placed in the input stream can be stuck here. 856 * We stick parsed ahead $ constructs during initial input, 857 * process id's from `$$', and modified variable values (from qualifiers 858 * during expansion in sh.dol.c) here. 859 */ 860extern struct Strbuf labuf; 861EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */ 862 863/* 864 * Parser structure 865 * 866 * Each command is parsed to a tree of command structures and 867 * flags are set bottom up during this process, to be propagated down 868 * as needed during the semantics/exeuction pass (sh.sem.c). 869 */ 870struct command { 871 unsigned char t_dtyp; /* Type of node */ 872#define NODE_COMMAND 1 /* t_dcom <t_dlef >t_drit */ 873#define NODE_PAREN 2 /* ( t_dspr ) <t_dlef >t_drit */ 874#define NODE_PIPE 3 /* t_dlef | t_drit */ 875#define NODE_LIST 4 /* t_dlef ; t_drit */ 876#define NODE_OR 5 /* t_dlef || t_drit */ 877#define NODE_AND 6 /* t_dlef && t_drit */ 878 unsigned char t_nice; /* Nice value */ 879#ifdef apollo 880 unsigned char t_systype; /* System environment */ 881#endif 882 unsigned long t_dflg; /* Flags, e.g. F_AMPERSAND|... */ 883/* save these when re-doing */ 884#ifndef apollo 885#define F_SAVE (F_NICE|F_TIME|F_NOHUP|F_HUP) 886#else 887#define F_SAVE (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER) 888#endif 889#define F_AMPERSAND (1<<0) /* executes in background */ 890#define F_APPEND (1<<1) /* output is redirected >> */ 891#define F_PIPEIN (1<<2) /* input is a pipe */ 892#define F_PIPEOUT (1<<3) /* output is a pipe */ 893#define F_NOFORK (1<<4) /* don't fork, last ()ized cmd */ 894#define F_NOINTERRUPT (1<<5) /* should be immune from intr's */ 895/* spare */ 896#define F_STDERR (1<<7) /* redirect unit 2 with unit 1 */ 897#define F_OVERWRITE (1<<8) /* output was ! */ 898#define F_READ (1<<9) /* input redirection is << */ 899#define F_REPEAT (1<<10) /* reexec aft if, repeat,... */ 900#define F_NICE (1<<11) /* t_nice is meaningful */ 901#define F_NOHUP (1<<12) /* nohup this command */ 902#define F_TIME (1<<13) /* time this command */ 903#define F_BACKQ (1<<14) /* command is in `` */ 904#define F_HUP (1<<15) /* hup this command */ 905#ifdef apollo 906#define F_VER (1<<16) /* execute command under SYSTYPE */ 907#endif 908 union { 909 Char *T_dlef; /* Input redirect word */ 910 struct command *T_dcar; /* Left part of list/pipe */ 911 } L; 912 union { 913 Char *T_drit; /* Output redirect word */ 914 struct command *T_dcdr; /* Right part of list/pipe */ 915 } R; 916#define t_dlef L.T_dlef 917#define t_dcar L.T_dcar 918#define t_drit R.T_drit 919#define t_dcdr R.T_dcdr 920 Char **t_dcom; /* Command/argument vector */ 921 struct command *t_dspr; /* Pointer to ()'d subtree */ 922}; 923 924 925/* 926 * The keywords for the parser 927 */ 928#define TC_BREAK 0 929#define TC_BRKSW 1 930#define TC_CASE 2 931#define TC_DEFAULT 3 932#define TC_ELSE 4 933#define TC_END 5 934#define TC_ENDIF 6 935#define TC_ENDSW 7 936#define TC_EXIT 8 937#define TC_FOREACH 9 938#define TC_GOTO 10 939#define TC_IF 11 940#define TC_LABEL 12 941#define TC_LET 13 942#define TC_SET 14 943#define TC_SWITCH 15 944#define TC_TEST 16 945#define TC_THEN 17 946#define TC_WHILE 18 947 948/* 949 * These are declared here because they want to be 950 * initialized in sh.init.c (to allow them to be made readonly) 951 */ 952 953#if defined(hpux) && defined(__STDC__) && !defined(__GNUC__) 954 /* Avoid hpux ansi mode spurious warnings */ 955typedef void (*bfunc_t) (); 956#else 957typedef void (*bfunc_t) (Char **, struct command *); 958#endif /* hpux && __STDC__ && !__GNUC__ */ 959 960extern const struct biltins { 961 const char *bname; 962 bfunc_t bfunct; 963 int minargs, maxargs; 964} bfunc[]; 965extern int nbfunc; 966#ifdef WINNT_NATIVE 967extern struct biltins nt_bfunc[]; 968extern int nt_nbfunc; 969#endif /* WINNT_NATIVE*/ 970extern int bequiet; 971 972extern struct srch { 973 const char *s_name; 974 int s_value; 975} srchn[]; 976extern int nsrchn; 977 978/* 979 * Structure defining the existing while/foreach loops at this 980 * source level. Loops are implemented by seeking back in the 981 * input. For foreach (fe), the word list is attached here. 982 */ 983EXTERN struct whyle { 984 struct Ain w_start; /* Point to restart loop */ 985 struct Ain w_end; /* End of loop (0 if unknown) */ 986 Char **w_fe, **w_fe0; /* Current/initial wordlist for fe */ 987 Char *w_fename; /* Name for fe */ 988 struct whyle *w_next; /* Next (more outer) loop */ 989} *whyles; 990 991/* 992 * Variable structure 993 * 994 * Aliases and variables are stored in AVL balanced binary trees. 995 */ 996EXTERN struct varent { 997 Char **vec; /* Array of words which is the value */ 998 Char *v_name; /* Name of variable/alias */ 999 int v_flags; /* Flags */ 1000#define VAR_ALL -1 1001#define VAR_READONLY 1 1002#define VAR_READWRITE 2 1003#define VAR_NOGLOB 4 1004#define VAR_FIRST 32 1005#define VAR_LAST 64 1006 struct varent *v_link[3]; /* The links, see below */ 1007 int v_bal; /* Balance factor */ 1008} shvhed IZERO_STRUCT, aliases IZERO_STRUCT; 1009 1010#define v_left v_link[0] 1011#define v_right v_link[1] 1012#define v_parent v_link[2] 1013 1014#define adrof(v) adrof1(v, &shvhed) 1015#define varval(v) value1(v, &shvhed) 1016 1017/* 1018 * The following are for interfacing redo substitution in 1019 * aliases to the lexical routines. 1020 */ 1021EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */ 1022EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */ 1023EXTERN Char **alvec IZERO_STRUCT, 1024 *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */ 1025 1026/* 1027 * Filename/command name expansion variables 1028 */ 1029 1030#ifndef MAXPATHLEN 1031# ifdef PATH_MAX 1032# define MAXPATHLEN PATH_MAX 1033# else 1034# define MAXPATHLEN 2048 1035# endif 1036#endif /* MAXPATHLEN */ 1037 1038#ifndef HAVENOLIMIT 1039/* 1040 * resource limits 1041 */ 1042extern struct limits { 1043 int limconst; 1044 const char *limname; 1045 int limdiv; 1046 const char *limscale; 1047} limits[]; 1048#endif /* !HAVENOLIMIT */ 1049 1050/* 1051 * History list 1052 * 1053 * Each history list entry contains an embedded wordlist 1054 * from the scanner, a number for the event, and a reference count 1055 * to aid in discarding old entries. 1056 * 1057 * Essentially "invisible" entries are put on the history list 1058 * when history substitution includes modifiers, and thrown away 1059 * at the next discarding since their event numbers are very negative. 1060 */ 1061EXTERN struct Hist { 1062 struct wordent Hlex; 1063 int Hnum; /* eventno when inserted into history list */ 1064 int Href; 1065 time_t Htime; 1066 Char *histline; 1067 struct Hist *Hnext, *Hprev; /* doubly linked list */ 1068 unsigned Hhash; /* hash value of command line */ 1069} Histlist IZERO_STRUCT; 1070 1071extern struct wordent paraml; /* Current lexical word list */ 1072EXTERN int eventno; /* Next events number */ 1073EXTERN int lastev; /* Last event reference (default) */ 1074 1075EXTERN Char HIST; /* history invocation character */ 1076EXTERN Char HISTSUB; /* auto-substitute character */ 1077EXTERN Char PRCH; /* Prompt symbol for regular users */ 1078EXTERN Char PRCHROOT; /* Prompt symbol for root */ 1079 1080/* 1081 * For operating systems with single case filenames (OS/2) 1082 */ 1083#ifdef CASE_INSENSITIVE 1084# ifdef WIDE_STRINGS 1085# define samecase(x) (towlower(x)) 1086# else 1087# define samecase(x) (isupper((unsigned char)(x)) ? \ 1088 tolower((unsigned char)(x)) : (x)) 1089# endif 1090#else 1091# define samecase(x) (x) 1092#endif /* CASE_INSENSITIVE */ 1093 1094/* 1095 * strings.h: 1096 */ 1097#ifndef SHORT_STRINGS 1098#define Strchr(a, b) strchr(a, b) 1099#define Strrchr(a, b) strrchr(a, b) 1100#define Strcat(a, b) strcat(a, b) 1101#define Strncat(a, b, c) strncat(a, b, c) 1102#define Strcpy(a, b) strcpy(a, b) 1103#define Strncpy(a, b, c) strncpy(a, b, c) 1104#define Strlen(a) strlen(a) 1105#define Strcmp(a, b) strcmp(a, b) 1106#define Strncmp(a, b, c) strncmp(a, b, c) 1107#define Strcasecmp(a, b) strcasecmp(a, b) 1108 1109#define Strspl(a, b) strspl(a, b) 1110#define Strnsave(a, b) strnsave(a, b) 1111#define Strsave(a) strsave(a) 1112#define Strend(a) strend(a) 1113#define Strstr(a, b) strstr(a, b) 1114 1115#define str2short(a) (a) 1116#define blk2short(a) saveblk(a) 1117#define short2blk(a) saveblk(a) 1118#define short2str(a) caching_strip(a) 1119#else 1120#if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS) 1121#define Strchr(a, b) wcschr(a, b) 1122#define Strrchr(a, b) wcsrchr(a, b) 1123#define Strcat(a, b) wcscat(a, b) 1124#define Strncat(a, b, c) wcsncat(a, b, c) 1125#define Strcpy(a, b) wcscpy(a, b) 1126#define Strncpy(a, b, c) wcsncpy(a, b, c) 1127#define Strlen(a) wcslen(a) 1128#define Strcmp(a, b) wcscmp(a, b) 1129#define Strncmp(a, b, c) wcsncmp(a, b, c) 1130#else 1131#define Strchr(a, b) s_strchr(a, b) 1132#define Strrchr(a, b) s_strrchr(a, b) 1133#define Strcat(a, b) s_strcat(a, b) 1134#define Strncat(a, b, c) s_strncat(a, b, c) 1135#define Strcpy(a, b) s_strcpy(a, b) 1136#define Strncpy(a, b, c) s_strncpy(a, b, c) 1137#define Strlen(a) s_strlen(a) 1138#define Strcmp(a, b) s_strcmp(a, b) 1139#define Strncmp(a, b, c) s_strncmp(a, b, c) 1140#endif 1141#define Strcasecmp(a, b) s_strcasecmp(a, b) 1142 1143#define Strspl(a, b) s_strspl(a, b) 1144#define Strnsave(a, b) s_strnsave(a, b) 1145#define Strsave(a) s_strsave(a) 1146#define Strend(a) s_strend(a) 1147#define Strstr(a, b) s_strstr(a, b) 1148#endif 1149 1150/* 1151 * setname is a macro to save space (see sh.err.c) 1152 */ 1153EXTERN const char *bname; 1154 1155#define setname(a) (bname = (a)) 1156 1157#ifdef VFORK 1158EXTERN Char *Vsav; 1159EXTERN Char *Vdp; 1160EXTERN Char *Vexpath; 1161EXTERN char **Vt; 1162#endif /* VFORK */ 1163 1164EXTERN Char **evalvec; 1165EXTERN Char *evalp; 1166 1167extern struct mesg { 1168 const char *iname; /* name from /usr/include */ 1169 const char *pname; /* print name */ 1170} mesg[]; 1171 1172/* word_chars is set by default to WORD_CHARS (or WORD_CHARS_VI) but can 1173 be overridden by the wordchars variable--if unset, reverts to 1174 WORD_CHARS (or WORD_CHARS_VI) */ 1175 1176EXTERN Char *word_chars; 1177 1178#define WORD_CHARS "*?_-.[]~=" /* default chars besides alnums in words */ 1179#define WORD_CHARS_VI "_" /* default chars besides alnums in words */ 1180 1181EXTERN Char *STR_SHELLPATH; 1182 1183#ifdef _PATH_BSHELL 1184EXTERN Char *STR_BSHELL; 1185#endif 1186EXTERN Char *STR_WORD_CHARS; 1187EXTERN Char *STR_WORD_CHARS_VI; 1188EXTERN Char **STR_environ IZERO; 1189 1190extern int dont_free; /* Tell free that we are in danger if we free */ 1191 1192extern Char *INVPTR; 1193extern Char **INVPPTR; 1194 1195extern char *progname; 1196extern int tcsh; 1197extern int xlate_cr; 1198extern int output_raw; 1199extern int lbuffed; 1200extern time_t Htime; 1201extern int numeof; 1202extern int insource; 1203extern char linbuf[]; 1204extern char *linp; 1205extern int nsig; 1206#ifdef VFORK 1207extern int use_fork; 1208#endif 1209extern int tellwhat; 1210extern int NoNLSRebind; 1211#if !HAVE_DECL_ENVIRON 1212extern char **environ; 1213#endif 1214 1215#include "tc.h" 1216 1217#ifndef WINNT_NATIVE 1218# ifdef NLS_CATALOGS 1219# ifdef HAVE_FEATURES_H 1220# include <features.h> 1221# endif 1222# ifdef HAVE_NL_LANGINFO 1223# include <langinfo.h> 1224# endif 1225# ifdef __uxps__ 1226# define gettxt gettxt_ds 1227# endif 1228# include <nl_types.h> 1229# ifdef __uxps__ 1230# undef gettxt 1231# endif 1232EXTERN nl_catd catd; 1233# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO) 1234# define CGETS(b, c, d) iconv_catgets(catd, b, c, d) 1235# else 1236# define CGETS(b, c, d) xcatgets(catd, b, c, d) 1237# endif 1238# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1239# else 1240# define CGETS(b, c, d) d 1241# define CSAVS(b, c, d) d 1242# endif 1243#else /* WINNT_NATIVE */ 1244# define CGETS(b, c, d) nt_cgets( b, c, d) 1245# define CSAVS(b, c, d) strsave(CGETS(b, c, d)) 1246#endif /* WINNT_NATIVE */ 1247 1248#if defined(FILEC) 1249extern int filec; 1250#endif /* FILEC */ 1251 1252#include "sh.decls.h" 1253/* 1254 * Since on some machines characters are unsigned, and the signed 1255 * keyword is not universally implemented, we treat all characters 1256 * as unsigned and sign extend them where we need. 1257 */ 1258#define SIGN_EXTEND_CHAR(a) (((a) & 0x80) ? ((a) | ~0x7f) : (a)) 1259 1260/* 1261 * explanation for use by the "--help" option 1262 */ 1263#define HELP_STRING "\ 1264-b file batch mode, read and execute commands from `file' \n\ 1265-c command run `command' from next argument \n\ 1266-d load directory stack from `~/.cshdirs' \n\ 1267-Dname[=value] define environment variable `name' to `value' (DomainOS only) \n\ 1268-e exit on any error \n\ 1269-f start faster by ignoring the start-up file \n\ 1270-F use fork() instead of vfork() when spawning (ConvexOS only) \n\ 1271-i interactive, even when input is not from a terminal \n\ 1272-l act as a login shell, must be the only option specified \n\ 1273-m load the start-up file, whether or not owned by effective user \n\ 1274-n file no execute mode, just check syntax of the following `file' \n\ 1275-q accept SIGQUIT for running under a debugger \n\ 1276-s read commands from standard input \n\ 1277-t read one line from standard input \n\ 1278-v echo commands after history substitution \n\ 1279-V like -v but including commands read from the start-up file \n\ 1280-x echo commands immediately before execution \n\ 1281-X like -x but including commands read from the start-up file \n\ 1282--help print this message and exit \n\ 1283--version print the version shell variable and exit \n\ 1284\nSee the tcsh(1) manual page for detailed information.\n" 1285 1286#include "tc.nls.h" 1287 1288#endif /* _h_sh */ 1289