contrib/tcsh-6/sh.h

   1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.146 2006/07/03 22:59:01 mitr 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)
  54 typedef 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  * Sanity
  80  */
  81 #if defined(_POSIX_SOURCE) && !defined(POSIX)
  82 # define POSIX
  83 #endif
  84
  85 #if defined(POSIXJOBS) && !defined(BSDJOBS)
  86 # define BSDJOBS
  87 #endif
  88
  89 #ifdef SHORT_STRINGS
  90 # ifdef WIDE_STRINGS
  91 #include <wchar.h>
  92 typedef wchar_t Char;
  93 typedef unsigned long uChar;
  94 typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */
  95 #define CHAR_ERR WEOF /* Pretty please, use bit 31... */
  96 #define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N)
  97 #define reset_mbtowc() mbtowc(NULL, NULL, 0)
  98 # else
  99 typedef short Char;
 100 typedef unsigned short uChar;
 101 typedef int eChar;
 102 #define CHAR_ERR (-1)
 103 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
 104 #define reset_mbtowc() ((void)0)
 105 # endif
 106 # define SAVE(a) (Strsave(str2short(a)))
 107 #else
 108 typedef char Char;
 109 typedef unsigned char uChar;
 110 typedef 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 # define SAVE(a) (strsave(a))
 115 #endif
 116
 117 /* Elide unused argument warnings */
 118 #define USE(a)  (void) (a)
 119
 120 /*
 121  * Return true if the path is absolute
 122  */
 123 #if defined(WINNT_NATIVE)
 124 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 125     (Isalpha((p)[0]) && (p)[1] == ':'))
 126 #elif defined(__CYGWIN__)
 127 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 128     (Isalpha((p)[0]) && (p)[1] == ':' && \
 129      ((p)[2] == '\0' || (p)[2] == '/')))
 130 #else /* !WINNT_NATIVE && !__CYGWIN__ */
 131 # define ABSOLUTEP(p)   (*(p) == '/')
 132 #endif /* WINNT_NATIVE || __CYGWIN__ */
 133
 134 /*
 135  * Fundamental definitions which may vary from system to system.
 136  *
 137  *      BUFSIZE         The i/o buffering size; also limits word size
 138  *      MAILINTVL       How often to mailcheck; more often is more expensive
 139  */
 140 #ifdef BUFSIZE
 141 # if       BUFSIZE < 4096
 142 #  undef   BUFSIZE
 143 #  define  BUFSIZE      4096    /* buffer size should be no less than this */
 144 # endif
 145 #else
 146 # define   BUFSIZE      4096
 147 #endif /* BUFSIZE */
 148
 149 #define FORKSLEEP       10      /* delay loop on non-interactive fork failure */
 150 #define MAILINTVL       600     /* 10 minutes */
 151
 152 #ifndef INBUFSIZE
 153 # define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
 154 #endif /* INBUFSIZE */
 155
 156
 157 /*
 158  * What our builtin echo looks like
 159  */
 160 #define NONE_ECHO       0
 161 #define BSD_ECHO        1
 162 #define SYSV_ECHO       2
 163 #define BOTH_ECHO       (BSD_ECHO|SYSV_ECHO)
 164
 165 #ifndef ECHO_STYLE
 166 # if SYSVREL > 0
 167 #  define ECHO_STYLE SYSV_ECHO
 168 # else /* SYSVREL == 0 */
 169 #  define ECHO_STYLE BSD_ECHO
 170 # endif /* SYSVREL */
 171 #endif /* ECHO_STYLE */
 172
 173 /*
 174  * The shell moves std in/out/diag and the old std input away from units
 175  * 0, 1, and 2 so that it is easy to set up these standards for invoked
 176  * commands.
 177  */
 178 #define FSAFE   5               /* We keep the first 5 descriptors untouched */
 179 #define FSHTTY  15              /* /dev/tty when manip pgrps */
 180 #define FSHIN   16              /* Preferred desc for shell input */
 181 #define FSHOUT  17              /* ... shell output */
 182 #define FSHDIAG 18              /* ... shell diagnostics */
 183 #define FOLDSTD 19              /* ... old std input */
 184
 185 #ifdef PROF
 186 #define xexit(n)        done(n)
 187 #endif
 188
 189 #ifdef cray
 190 # define word word_t           /* sys/types.h defines word.. bad move! */
 191 #endif
 192
 193 #include <sys/types.h>
 194
 195 #ifdef cray
 196 # undef word
 197 #endif
 198
 199 /*
 200  * Path separator in environment variables
 201  */
 202 #ifndef PATHSEP
 203 # if defined(__EMX__) || defined(WINNT_NATIVE)
 204 #  define PATHSEP ';'
 205 # else /* unix */
 206 #  define PATHSEP ':'
 207 # endif /* __EMX__ || WINNT_NATIVE */
 208 #endif /* !PATHSEP */
 209
 210 #if defined(__HP_CXD_SPP) && !defined(__hpux)
 211 # include <sys/cnx_stat.h>
 212 # define stat stat64
 213 # define fstat fstat64
 214 # define lstat lstat64
 215 #endif /* __HP_CXD_SPP && !__hpux */
 216
 217 /*
 218  * This macro compares the st_dev field of struct stat. On aix on ibmESA
 219  * st_dev is a structure, so comparison does not work.
 220  */
 221 #ifndef DEV_DEV_COMPARE
 222 # define DEV_DEV_COMPARE(x,y)   ((x) == (y))
 223 #endif /* DEV_DEV_COMPARE */
 224
 225 #ifdef _SEQUENT_
 226 # include <sys/procstats.h>
 227 #endif /* _SEQUENT_ */
 228 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
 229 # include <sys/times.h>
 230 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
 231
 232 #ifdef NLS
 233 # include <locale.h>
 234 #endif /* NLS */
 235
 236
 237 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
 238 # include <sys/param.h>
 239 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
 240 #include <sys/stat.h>
 241
 242 #if defined(BSDTIMES) || defined(BSDLIMIT)
 243 # include <sys/time.h>
 244 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
 245 #  include "/usr/ucbinclude/sys/resource.h"
 246 # else
 247 #  ifdef convex
 248 #   define sysrusage cvxrusage
 249 #   include <sys/sysinfo.h>
 250 #  else
 251 #   define sysrusage rusage
 252 #   include <sys/resource.h>
 253 #  endif /* convex */
 254 # endif /* SYSVREL>3 */
 255 #endif /* BSDTIMES */
 256
 257 #ifndef WINNT_NATIVE
 258 # ifndef POSIX
 259 #  ifdef TERMIO
 260 #   include <termio.h>
 261 #  else /* SGTTY */
 262 #   include <sgtty.h>
 263 #  endif /* TERMIO */
 264 # else /* POSIX */
 265 #  ifndef _UWIN
 266 #   include <termios.h>
 267 #  else
 268 #   include <termio.h>
 269 #  endif /* _UWIN */
 270 #  if SYSVREL > 3
 271 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 272 #   undef TIOCSLTC
 273 #   undef CSWTCH
 274 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 275 #  endif /* SYSVREL > 3 */
 276 # endif /* POSIX */
 277 #endif /* WINNT_NATIVE */
 278
 279 #ifdef sonyrisc
 280 # include <sys/ttold.h>
 281 #endif /* sonyrisc */
 282
 283 #if defined(POSIX) && !defined(WINNT_NATIVE)
 284 # include <unistd.h>
 285
 286 /*
 287  * the gcc+protoize version of <stdlib.h>
 288  * redefines malloc(), so we define the following
 289  * to avoid it.
 290  */
 291 # if defined(SYSMALLOC) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX)
 292 #  define NO_FIX_MALLOC
 293 #  include <stdlib.h>
 294 # else /* glibc */
 295 #  define _GNU_STDLIB_H
 296 #  define malloc __malloc
 297 #  define free __free
 298 #  define calloc __calloc
 299 #  define realloc __realloc
 300 #  include <stdlib.h>
 301 #  undef malloc
 302 #  undef free
 303 #  undef calloc
 304 #  undef realloc
 305 # endif /* glibc || sgi */
 306 #endif /* POSIX && !WINNT_NATIVE */
 307 #include <limits.h>
 308
 309 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) || defined(__GNU__) || defined(__GLIBC__)
 310 # if !defined(pyr) && !defined(stellar)
 311 #  include <time.h>
 312 #  ifdef _MINIX
 313 #   define HZ CLOCKS_PER_SEC
 314 #  endif /* _MINIX */
 315 # endif /* !pyr && !stellar */
 316 #endif /* SYSVREL > 0 ||  _IBMR2 */
 317
 318 /* In the following ifdef the DECOSF1 has been commented so that later
 319  * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
 320  */
 321 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
 322 # if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
 323 #  include <sys/ioctl.h>
 324 # endif
 325 #endif
 326
 327 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
 328 #undef CSWTCH
 329 #define CSWTCH _POSIX_VDISABLE
 330 #endif
 331
 332 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
 333 # include <sys/filio.h>
 334 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
 335
 336 #if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
 337 # include <sys/file.h>
 338 #endif  /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
 339
 340 #if !defined(O_RDONLY) || !defined(O_NDELAY)
 341 # include <fcntl.h>
 342 #endif
 343 #ifndef O_LARGEFILE
 344 # define O_LARGEFILE 0
 345 #endif
 346
 347 #include <errno.h>
 348
 349 #include <setjmp.h>
 350
 351 #include <stdarg.h>
 352
 353 #ifdef HAVE_DIRENT_H
 354 # include <dirent.h>
 355 #else
 356 # ifdef HAVE_NDIR_H
 357 #  include <ndir.h>
 358 # else
 359 #  include <sys/dir.h>
 360 # endif
 361 # define dirent direct
 362 #endif /* HAVE_DIRENT_H */
 363 #ifndef HAVE_STRUCT_DIRENT_D_INO
 364 # define d_ino d_fileno
 365 #endif
 366 #if defined(hpux) || defined(sgi) || defined(OREO)
 367 # include <stdio.h>     /* So the fgetpwent() prototypes work */
 368 #endif /* hpux || sgi || OREO */
 369 #ifndef WINNT_NATIVE
 370 #include <pwd.h>
 371 #include <grp.h>
 372 #endif /* WINNT_NATIVE */
 373 #ifdef HAVE_SHADOW_H
 374 # include <shadow.h>
 375 #endif /* HAVE_SHADOW_H */
 376 #ifdef HAVE_AUTH_H
 377 # include <auth.h>
 378 #endif /* HAVE_AUTH_H */
 379 #if defined(BSD) && !defined(POSIX)
 380 # include <strings.h>
 381 # define strchr(a, b) index(a, b)
 382 # define strrchr(a, b) rindex(a, b)
 383 #else
 384 # include <string.h>
 385 #endif /* BSD */
 386
 387 /*
 388  * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
 389  * include it yet, so we include it here
 390  */
 391 #if defined(sgi) && SYSVREL > 3
 392 # include <sys/cdefs.h>
 393 #endif /* sgi && SYSVREL > 3 */
 394
 395 #ifdef REMOTEHOST
 396 # ifdef ISC
 397 #  undef MAXHOSTNAMELEN /* Busted headers? */
 398 # endif
 399
 400 # include <netinet/in.h>
 401 # include <arpa/inet.h>
 402 # include <sys/socket.h>
 403 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
 404 #  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
 405 #   if !defined(sgi)
 406 #    if !defined(__CYGWIN__)
 407 #     define INET6
 408 #    endif /* __CYGWIN__ */
 409 #   endif /* sgi */
 410 #  endif /* __APPLE__ */
 411 # endif
 412 # include <sys/uio.h>   /* For struct iovec */
 413 #endif /* REMOTEHOST */
 414
 415 #ifdef PURIFY
 416 /* exit normally, allowing purify to trace leaks */
 417 # define _exit          exit
 418 typedef  int            pret_t;
 419 #else /* !PURIFY */
 420 /*
 421  * If your compiler complains, then you can either
 422  * throw it away and get gcc or, use the following define
 423  * and get rid of the typedef.
 424  * [The 4.2/3BSD vax compiler does not like that]
 425  * Both MULTIFLOW and PCC compilers exhbit this bug.  -- sterling@netcom.com
 426  */
 427 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
 428 #  define pret_t void
 429 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
 430 typedef void pret_t;
 431 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
 432 #endif /* PURIFY */
 433
 434 /*
 435  * ASCII vs. EBCDIC
 436  */
 437 #if 'Z' - 'A' == 25
 438 # ifndef IS_ASCII
 439 #  define IS_ASCII
 440 # endif
 441 #endif
 442
 443 #include "sh.types.h"
 444
 445 #if !HAVE_DECL_GETPGRP
 446 # ifndef GETPGRP_VOID
 447 extern pid_t getpgrp (int);
 448 # else
 449 extern pid_t getpgrp (void);
 450 # endif
 451 #endif
 452
 453 #ifndef lint
 454 typedef ptr_t memalign_t;
 455 #else
 456 typedef union {
 457     char    am_char, *am_char_p;
 458     short   am_short, *am_short_p;
 459     int     am_int, *am_int_p;
 460     long    am_long, *am_long_p;
 461     float   am_float, *am_float_p;
 462     double  am_double, *am_double_p;
 463 }      *memalign_t;
 464
 465 # define malloc         lint_malloc
 466 # define free           lint_free
 467 # define realloc        lint_realloc
 468 # define calloc         lint_calloc
 469 #endif
 470
 471 #ifdef SYSMALLOC
 472 # define xmalloc(i)     smalloc(i)
 473 # define xrealloc(p, i) srealloc(p, i)
 474 # define xcalloc(n, s)  scalloc(n, s)
 475 # define xfree          sfree
 476 #else
 477 # define xmalloc(i)     malloc(i)
 478 # define xrealloc(p, i) realloc(p, i)
 479 # define xcalloc(n, s)  calloc(n, s)
 480 # define xfree          free
 481 #endif /* SYSMALLOC */
 482 #include "sh.char.h"
 483 #include "sh.err.h"
 484 #include "sh.dir.h"
 485 #include "sh.proc.h"
 486
 487 #include "pathnames.h"
 488
 489
 490 /*
 491  * C shell
 492  *
 493  * Bill Joy, UC Berkeley
 494  * October, 1978; May 1980
 495  *
 496  * Jim Kulp, IIASA, Laxenburg Austria
 497  * April, 1980
 498  */
 499
 500 #ifdef HESIOD
 501 # include <hesiod.h>
 502 #endif /* HESIOD */
 503
 504 #ifdef REMOTEHOST
 505 # include <netdb.h>
 506 #endif /* REMOTEHOST */
 507
 508 #ifndef MAXHOSTNAMELEN
 509 # ifdef HOST_NAME_MAX
 510 #  define MAXHOSTNAMELEN (HOST_NAME_MAX + 1)
 511 # elif defined(SCO) && (SYSVREL > 3)
 512 #  include <sys/socket.h>
 513 # else
 514 #  define MAXHOSTNAMELEN 256
 515 # endif
 516 #endif /* MAXHOSTNAMELEN */
 517
 518
 519
 520 #define eq(a, b)        (Strcmp(a, b) == 0)
 521
 522 /* globone() flags */
 523 #define G_ERROR         0       /* default action: error if multiple words */
 524 #define G_IGNORE        1       /* ignore the rest of the words            */
 525 #define G_APPEND        2       /* make a sentence by cat'ing the words    */
 526
 527 /*
 528  * Global flags
 529  */
 530 EXTERN int    chkstop IZERO;    /* Warned of stopped jobs... allow exit */
 531
 532 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
 533 # define CLOSE_ON_EXEC
 534 #else
 535 EXTERN int    didcch IZERO;     /* Have closed unused fd's for child */
 536 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
 537
 538 EXTERN int    didfds IZERO;     /* Have setup i/o fd's for child */
 539 EXTERN int    doneinp IZERO;    /* EOF indicator after reset from readc */
 540 EXTERN int    exiterr IZERO;    /* Exit if error or non-zero exit status */
 541 EXTERN int    child IZERO;      /* Child shell ... errors cause exit */
 542 EXTERN int    haderr IZERO;     /* Reset was because of an error */
 543 EXTERN int    intty IZERO;      /* Input is a tty */
 544 EXTERN int    intact IZERO;     /* We are interactive... therefore prompt */
 545 EXTERN int    justpr IZERO;     /* Just print because of :p hist mod */
 546 EXTERN int    loginsh IZERO;    /* We are a loginsh -> .login/.logout */
 547 EXTERN int    neednote IZERO;   /* Need to pnotify() */
 548 EXTERN int    noexec IZERO;     /* Don't execute, just syntax check */
 549 EXTERN int    pjobs IZERO;      /* want to print jobs if interrupted */
 550 EXTERN int    setintr IZERO;    /* Set interrupts on/off -> Wait intr... */
 551 EXTERN int    havhash IZERO;    /* path hashing is available */
 552 EXTERN int    editing IZERO;    /* doing filename expansion and line editing */
 553 EXTERN int    noediting IZERO;  /* initial $term defaulted to noedit */
 554 EXTERN int    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
 555 EXTERN int    isoutatty IZERO;  /* is SHOUT a tty */
 556 EXTERN int    isdiagatty IZERO;/* is SHDIAG a tty */
 557 EXTERN int    is1atty IZERO;    /* is file descriptor 1 a tty (didfds mode) */
 558 EXTERN int    is2atty IZERO;    /* is file descriptor 2 a tty (didfds mode) */
 559 EXTERN int    arun IZERO;       /* Currently running multi-line-aliases */
 560 EXTERN int     implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
 561 EXTERN int    inheredoc IZERO;  /* Currently parsing a heredoc */
 562 /* We received a window change event */
 563 EXTERN volatile sig_atomic_t windowchg IZERO;
 564 #if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
 565 EXTERN int    dspmbyte_ls;
 566 #endif
 567
 568 /*
 569  * Global i/o info
 570  */
 571 EXTERN Char   *arginp IZERO;    /* Argument input for sh -c and internal `xx` */
 572 EXTERN int     onelflg IZERO;   /* 2 -> need line for -t, 1 -> exit on read */
 573 extern Char   *ffile;           /* Name of shell file for $0 */
 574 extern int    dolzero;          /* if $?0 should return true... */
 575
 576 extern char *seterr;            /* Error message from scanner/parser */
 577 #ifndef errno
 578 extern int errno;               /* Error from C library routines */
 579 #endif
 580 extern int exitset;
 581 /* Temp name for << shell files in /tmp, for xfree() */
 582 EXTERN Char   *shtemp IZERO;
 583
 584 #ifdef BSDTIMES
 585 EXTERN struct timeval time0;    /* Time at which the shell started */
 586 EXTERN struct sysrusage ru0;
 587 #else
 588 # ifdef _SEQUENT_
 589 EXTERN timeval_t time0;         /* time at which shell started */
 590 EXTERN struct process_stats ru0;
 591 # else /* _SEQUENT_ */
 592 #  ifndef POSIX
 593 EXTERN time_t  time0;           /* time at which shell started */
 594 #  else /* POSIX */
 595 EXTERN clock_t time0;           /* time at which shell started */
 596 EXTERN clock_t clk_tck;
 597 #  endif /* POSIX */
 598 EXTERN struct tms shtimes;      /* shell and child times for process timing */
 599 # endif /* _SEQUENT_ */
 600 EXTERN time_t seconds0;
 601 #endif /* BSDTIMES */
 602
 603 #ifndef HZ
 604 # define HZ     100             /* for division into seconds */
 605 #endif
 606
 607 /*
 608  * Miscellany
 609  */
 610 EXTERN Char   *doldol;          /* Character pid for $$ */
 611 EXTERN pid_t   backpid;         /* pid of the last background job */
 612
 613 /*
 614  * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
 615  * cause pid's could be unsigned and that would break our -1 flag, and
 616  * uid_t and gid_t are not defined in all the systems so I would have to
 617  * make special cases for them. In the future...
 618  */
 619 EXTERN uid_t   uid, euid;       /* Invokers real and effective */
 620 EXTERN gid_t   gid, egid;       /* User and group ids */
 621 EXTERN pid_t   opgrp,           /* Initial pgrp and tty pgrp */
 622                shpgrp,          /* Pgrp of shell */
 623                tpgrp;           /* Terminal process group */
 624                                 /* If tpgrp is -1, leave tty alone! */
 625
 626 EXTERN Char   *Prompt;          /* The actual printed prompt or NULL */
 627 EXTERN Char   *RPrompt;         /* Right-hand side prompt or NULL */
 628
 629 /*
 630  * To be able to redirect i/o for builtins easily, the shell moves the i/o
 631  * descriptors it uses away from 0,1,2.
 632  * Ideally these should be in units which are closed across exec's
 633  * (this saves work) but for version 6, this is not usually possible.
 634  * The desired initial values for these descriptors are defined in
 635  * sh.local.h.
 636  */
 637 EXTERN int   SHIN IZERO;        /* Current shell input (script) */
 638 EXTERN int   SHOUT IZERO;       /* Shell output */
 639 EXTERN int   SHDIAG IZERO;      /* Diagnostic output... shell errs go here */
 640 EXTERN int   OLDSTD IZERO;      /* Old standard input (def for cmds) */
 641
 642
 643 #if SYSVREL == 4 && defined(_UTS)
 644 /*
 645  * From: fadden@uts.amdahl.com (Andy McFadden)
 646  * we need sigsetjmp for UTS4, but not UTS2.1
 647  */
 648 # define SIGSETJMP
 649 #endif
 650
 651 /*
 652  * Error control
 653  *
 654  * Errors in scanning and parsing set up an error message to be printed
 655  * at the end and complete.  Other errors always cause a reset.
 656  * Because of source commands and .cshrc we need nested error catches.
 657  */
 658
 659 #ifdef SIGSETJMP
 660    typedef struct { sigjmp_buf j; } jmp_buf_t;
 661 # define setexit()  sigsetjmp(reslab.j)
 662 # define _reset()    siglongjmp(reslab.j, 1)
 663 #else
 664    typedef struct { jmp_buf j; } jmp_buf_t;
 665 # define setexit()  setjmp(reslab.j)
 666 # define _reset()    longjmp(reslab.j, 1)
 667 #endif
 668
 669 #define getexit(a) (void) ((a) = reslab)
 670 #define resexit(a) (void) (reslab = (a))
 671
 672 #define cpybin(a, b) (void) ((a) = (b))
 673
 674 extern jmp_buf_t reslab;
 675
 676 EXTERN Char   *gointr;          /* Label for an onintr transfer */
 677
 678 extern struct sigaction parintr;        /* Parents interrupt catch */
 679 extern struct sigaction parterm;        /* Parents terminate catch */
 680
 681 /*
 682  * Lexical definitions.
 683  *
 684  * All lexical space is allocated dynamically.
 685  * The eighth/sixteenth bit of characters is used to prevent recognition,
 686  * and eventually stripped.
 687  */
 688 #define         META            0200
 689 #define         ASCII           0177
 690 #ifdef WIDE_STRINGS             /* Implies SHORT_STRINGS */
 691 /* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
 692 # define        QUOTE           0x40000000
 693 # define        TRIM            0x3FFFFFFF /* Mask to strip quote bit */
 694 # define        UNDER           0x20000000 /* Underline flag */
 695 # define        BOLD            0x10000000 /* Bold flag */
 696 # define        STANDOUT        0x08000000 /* Standout flag */
 697 # define        LITERAL         0x04000000 /* Literal character flag */
 698 # define        ATTRIBUTES      0x3C000000 /* The bits used for attributes */
 699 # define        INVALID_BYTE    0x00200000 /* Invalid character on input */
 700 # define        CHAR            0x003FFFFF /* Mask to mask out the character */
 701 #elif defined (SHORT_STRINGS)
 702 # define        QUOTE   ((Char) 0100000)/* 16nth char bit used for 'ing */
 703 # define        TRIM            0073777 /* Mask to strip quote/lit bit */
 704 # define        UNDER           0040000 /* Underline flag */
 705 # define        BOLD            0020000 /* Bold flag */
 706 # define        STANDOUT        0010000 /* Standout flag */
 707 # define        LITERAL         0004000 /* Literal character flag */
 708 # define        ATTRIBUTES      0074000 /* The bits used for attributes */
 709 # define        INVALID_BYTE    0
 710 # define        CHAR            0000377 /* Mask to mask out the character */
 711 #else
 712 # define        QUOTE   ((Char) 0200)   /* Eighth char bit used for 'ing */
 713 # define        TRIM            0177    /* Mask to strip quote bit */
 714 # define        UNDER           0000000 /* No extra bits to do both */
 715 # define        BOLD            0000000 /* Bold flag */
 716 # define        STANDOUT        META    /* Standout flag */
 717 # define        LITERAL         0000000 /* Literal character flag */
 718 # define        ATTRIBUTES      0200    /* The bits used for attributes */
 719 # define        INVALID_BYTE    0
 720 # define        CHAR            0000177 /* Mask to mask out the character */
 721 #endif
 722 #define         CHAR_DBWIDTH    (LITERAL|(LITERAL-1))
 723
 724 EXTERN int     AsciiOnly;       /* If set only 7 bits expected in characters */
 725
 726 /*
 727  * Each level of input has a buffered input structure.
 728  * There are one or more blocks of buffered input for each level,
 729  * exactly one if the input is seekable and tell is available.
 730  * In other cases, the shell buffers enough blocks to keep all loops
 731  * in the buffer.
 732  *
 733  * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but
 734  * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for
 735  * fbuf indexing).
 736  *
 737  * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there
 738  * is no difference between byte and character offsets.
 739  */
 740 EXTERN struct Bin {
 741     off_t   Bfseekp;            /* Seek pointer, generally != lseek() value */
 742     off_t   Bfbobp;             /* Seekp of beginning of buffers */
 743     off_t   Bfeobp;             /* Seekp of end of buffers */
 744     int     Bfblocks;           /* Number of buffer blocks */
 745     Char  **Bfbuf;              /* The array of buffer blocks */
 746 #ifdef WIDE_STRINGS
 747     /* Number of bytes in each character if (cantell) */
 748     unsigned char Bfclens[BUFSIZE + 1];
 749 #endif
 750 }       B;
 751
 752 /*
 753  * This structure allows us to seek inside aliases
 754  */
 755 struct Ain {
 756     int type;
 757 #define TCSH_I_SEEK      0              /* Invalid seek */
 758 #define TCSH_A_SEEK      1              /* Alias seek */
 759 #define TCSH_F_SEEK      2              /* File seek */
 760 #define TCSH_E_SEEK      3              /* Eval seek */
 761     union {
 762         off_t _f_seek;          /* A byte offset if (cantell) */
 763         Char* _c_seek;
 764     } fc;
 765 #define f_seek fc._f_seek
 766 #define c_seek fc._c_seek
 767     Char **a_seek;
 768 } ;
 769
 770 extern int aret;                /* Type of last char returned */
 771 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
 772                       (a)->f_seek == (b)->f_seek && \
 773                       (a)->a_seek == (b)->a_seek)
 774
 775 #define fseekp  B.Bfseekp
 776 #define fbobp   B.Bfbobp
 777 #define feobp   B.Bfeobp
 778 #define fblocks B.Bfblocks
 779 #define fbuf    B.Bfbuf
 780 #define fclens  B.Bfclens
 781
 782 /*
 783  * The shell finds commands in loops by reseeking the input
 784  * For whiles, in particular, it reseeks to the beginning of the
 785  * line the while was on; hence the while placement restrictions.
 786  */
 787 EXTERN struct Ain lineloc;
 788
 789 EXTERN int    cantell;          /* Is current source tellable ? */
 790
 791 /*
 792  * Input lines are parsed into doubly linked circular
 793  * lists of words of the following form.
 794  */
 795 struct wordent {
 796     Char   *word;
 797     struct wordent *prev;
 798     struct wordent *next;
 799 };
 800
 801 /*
 802  * During word building, both in the initial lexical phase and
 803  * when expanding $ variable substitutions, expansion by `!' and `$'
 804  * must be inhibited when reading ahead in routines which are themselves
 805  * processing `!' and `$' expansion or after characters such as `\' or in
 806  * quotations.  The following flags are passed to the getC routines
 807  * telling them which of these substitutions are appropriate for the
 808  * next character to be returned.
 809  */
 810 #define DODOL   1
 811 #define DOEXCL  2
 812 #define DOALL   DODOL|DOEXCL
 813
 814 /*
 815  * Labuf implements a general buffer for lookahead during lexical operations.
 816  * Text which is to be placed in the input stream can be stuck here.
 817  * We stick parsed ahead $ constructs during initial input,
 818  * process id's from `$$', and modified variable values (from qualifiers
 819  * during expansion in sh.dol.c) here.
 820  */
 821 extern struct Strbuf labuf;
 822 EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */
 823
 824 /*
 825  * Parser structure
 826  *
 827  * Each command is parsed to a tree of command structures and
 828  * flags are set bottom up during this process, to be propagated down
 829  * as needed during the semantics/exeuction pass (sh.sem.c).
 830  */
 831 struct command {
 832     unsigned char   t_dtyp;     /* Type of node                  */
 833 #define NODE_COMMAND    1       /* t_dcom <t_dlef >t_drit        */
 834 #define NODE_PAREN      2       /* ( t_dspr ) <t_dlef >t_drit    */
 835 #define NODE_PIPE       3       /* t_dlef | t_drit               */
 836 #define NODE_LIST       4       /* t_dlef ; t_drit               */
 837 #define NODE_OR         5       /* t_dlef || t_drit              */
 838 #define NODE_AND        6       /* t_dlef && t_drit              */
 839     unsigned char   t_nice;     /* Nice value                    */
 840 #ifdef apollo
 841     unsigned char   t_systype;  /* System environment            */
 842 #endif
 843     unsigned long   t_dflg;     /* Flags, e.g. F_AMPERSAND|...   */
 844 /* save these when re-doing      */
 845 #ifndef apollo
 846 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP|F_HUP)
 847 #else
 848 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
 849 #endif
 850 #define F_AMPERSAND     (1<<0)  /* executes in background        */
 851 #define F_APPEND        (1<<1)  /* output is redirected >>       */
 852 #define F_PIPEIN        (1<<2)  /* input is a pipe               */
 853 #define F_PIPEOUT       (1<<3)  /* output is a pipe              */
 854 #define F_NOFORK        (1<<4)  /* don't fork, last ()ized cmd   */
 855 #define F_NOINTERRUPT   (1<<5)  /* should be immune from intr's */
 856 /* spare */
 857 #define F_STDERR        (1<<7)  /* redirect unit 2 with unit 1   */
 858 #define F_OVERWRITE     (1<<8)  /* output was !                  */
 859 #define F_READ          (1<<9)  /* input redirection is <<       */
 860 #define F_REPEAT        (1<<10) /* reexec aft if, repeat,...     */
 861 #define F_NICE          (1<<11) /* t_nice is meaningful          */
 862 #define F_NOHUP         (1<<12) /* nohup this command            */
 863 #define F_TIME          (1<<13) /* time this command             */
 864 #define F_BACKQ         (1<<14) /* command is in ``              */
 865 #define F_HUP           (1<<15) /* hup this command              */
 866 #ifdef apollo
 867 #define F_VER           (1<<16) /* execute command under SYSTYPE */
 868 #endif
 869     union {
 870         Char   *T_dlef;         /* Input redirect word           */
 871         struct command *T_dcar; /* Left part of list/pipe        */
 872     }       L;
 873     union {
 874         Char   *T_drit;         /* Output redirect word          */
 875         struct command *T_dcdr; /* Right part of list/pipe       */
 876     }       R;
 877 #define t_dlef  L.T_dlef
 878 #define t_dcar  L.T_dcar
 879 #define t_drit  R.T_drit
 880 #define t_dcdr  R.T_dcdr
 881     Char  **t_dcom;             /* Command/argument vector       */
 882     struct command *t_dspr;     /* Pointer to ()'d subtree       */
 883 };
 884
 885
 886 /*
 887  * The keywords for the parser
 888  */
 889 #define TC_BREAK        0
 890 #define TC_BRKSW        1
 891 #define TC_CASE         2
 892 #define TC_DEFAULT      3
 893 #define TC_ELSE         4
 894 #define TC_END          5
 895 #define TC_ENDIF        6
 896 #define TC_ENDSW        7
 897 #define TC_EXIT         8
 898 #define TC_FOREACH      9
 899 #define TC_GOTO         10
 900 #define TC_IF           11
 901 #define TC_LABEL        12
 902 #define TC_LET          13
 903 #define TC_SET          14
 904 #define TC_SWITCH       15
 905 #define TC_TEST         16
 906 #define TC_THEN         17
 907 #define TC_WHILE        18
 908
 909 /*
 910  * These are declared here because they want to be
 911  * initialized in sh.init.c (to allow them to be made readonly)
 912  */
 913
 914 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
 915     /* Avoid hpux ansi mode spurious warnings */
 916 typedef void (*bfunc_t) ();
 917 #else
 918 typedef void (*bfunc_t) (Char **, struct command *);
 919 #endif /* hpux && __STDC__ && !__GNUC__ */
 920
 921 extern const struct biltins {
 922     const char   *bname;
 923     bfunc_t bfunct;
 924     int     minargs, maxargs;
 925 } bfunc[];
 926 extern int nbfunc;
 927 #ifdef WINNT_NATIVE
 928 extern struct biltins  nt_bfunc[];
 929 extern int nt_nbfunc;
 930 #endif /* WINNT_NATIVE*/
 931 extern int bequiet;
 932
 933 extern struct srch {
 934     const char *s_name;
 935     int  s_value;
 936 } srchn[];
 937 extern int nsrchn;
 938
 939 /*
 940  * Structure defining the existing while/foreach loops at this
 941  * source level.  Loops are implemented by seeking back in the
 942  * input.  For foreach (fe), the word list is attached here.
 943  */
 944 EXTERN struct whyle {
 945     struct Ain   w_start;       /* Point to restart loop */
 946     struct Ain   w_end;         /* End of loop (0 if unknown) */
 947     Char  **w_fe, **w_fe0;      /* Current/initial wordlist for fe */
 948     Char   *w_fename;           /* Name for fe */
 949     struct whyle *w_next;       /* Next (more outer) loop */
 950 }      *whyles;
 951
 952 /*
 953  * Variable structure
 954  *
 955  * Aliases and variables are stored in AVL balanced binary trees.
 956  */
 957 EXTERN struct varent {
 958     Char  **vec;                /* Array of words which is the value */
 959     Char   *v_name;             /* Name of variable/alias */
 960     int     v_flags;            /* Flags */
 961 #define VAR_ALL         -1
 962 #define VAR_READONLY    1
 963 #define VAR_READWRITE   2
 964 #define VAR_NOGLOB      4
 965 #define VAR_FIRST       32
 966 #define VAR_LAST        64
 967     struct varent *v_link[3];   /* The links, see below */
 968     int     v_bal;              /* Balance factor */
 969 }       shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
 970
 971 #define v_left          v_link[0]
 972 #define v_right         v_link[1]
 973 #define v_parent        v_link[2]
 974
 975 #define adrof(v)        adrof1(v, &shvhed)
 976 #define varval(v)       value1(v, &shvhed)
 977
 978 /*
 979  * The following are for interfacing redo substitution in
 980  * aliases to the lexical routines.
 981  */
 982 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
 983 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
 984 EXTERN Char  **alvec IZERO_STRUCT,
 985               *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
 986
 987 /*
 988  * Filename/command name expansion variables
 989  */
 990
 991 #ifdef __CYGWIN__
 992 # undef MAXPATHLEN
 993 #endif /* __CYGWIN__ */
 994
 995 #ifndef MAXPATHLEN
 996 # ifdef PATH_MAX
 997 #  define MAXPATHLEN PATH_MAX
 998 # else
 999 #  define MAXPATHLEN 2048
1000 # endif
1001 #endif /* MAXPATHLEN */
1002
1003 #ifndef HAVENOLIMIT
1004 /*
1005  * resource limits
1006  */
1007 extern struct limits {
1008     int         limconst;
1009     const char *limname;
1010     int         limdiv;
1011     const char *limscale;
1012 } limits[];
1013 #endif /* !HAVENOLIMIT */
1014
1015 /*
1016  * History list
1017  *
1018  * Each history list entry contains an embedded wordlist
1019  * from the scanner, a number for the event, and a reference count
1020  * to aid in discarding old entries.
1021  *
1022  * Essentially "invisible" entries are put on the history list
1023  * when history substitution includes modifiers, and thrown away
1024  * at the next discarding since their event numbers are very negative.
1025  */
1026 EXTERN struct Hist {
1027     struct wordent Hlex;
1028     int     Hnum;
1029     int     Href;
1030     time_t  Htime;
1031     Char   *histline;
1032     struct Hist *Hnext;
1033 }       Histlist IZERO_STRUCT;
1034
1035 EXTERN struct wordent paraml;   /* Current lexical word list */
1036 EXTERN int     eventno;         /* Next events number */
1037 EXTERN int     lastev;          /* Last event reference (default) */
1038
1039 EXTERN Char    HIST;            /* history invocation character */
1040 EXTERN Char    HISTSUB;         /* auto-substitute character */
1041 EXTERN Char    PRCH;            /* Prompt symbol for regular users */
1042 EXTERN Char    PRCHROOT;        /* Prompt symbol for root */
1043
1044 /*
1045  * For operating systems with single case filenames (OS/2)
1046  */
1047 #ifdef CASE_INSENSITIVE
1048 # ifdef WIDE_STRINGS
1049 #  define samecase(x) (towlower(x))
1050 # else
1051 #  define samecase(x) (isupper((unsigned char)(x)) ? \
1052                        tolower((unsigned char)(x)) : (x))
1053 # endif
1054 #else
1055 # define samecase(x) (x)
1056 #endif /* CASE_INSENSITIVE */
1057
1058 /*
1059  * strings.h:
1060  */
1061 #ifndef SHORT_STRINGS
1062 #define Strchr(a, b)            strchr(a, b)
1063 #define Strrchr(a, b)           strrchr(a, b)
1064 #define Strcat(a, b)            strcat(a, b)
1065 #define Strncat(a, b, c)        strncat(a, b, c)
1066 #define Strcpy(a, b)            strcpy(a, b)
1067 #define Strncpy(a, b, c)        strncpy(a, b, c)
1068 #define Strlen(a)               strlen(a)
1069 #define Strcmp(a, b)            strcmp(a, b)
1070 #define Strncmp(a, b, c)        strncmp(a, b, c)
1071 #define Strcasecmp(a, b)        strcasecmp(a, b)
1072
1073 #define Strspl(a, b)            strspl(a, b)
1074 #define Strnsave(a, b)          strnsave(a, b)
1075 #define Strsave(a)              strsave(a)
1076 #define Strend(a)               strend(a)
1077 #define Strstr(a, b)            strstr(a, b)
1078
1079 #define str2short(a)            (a)
1080 #define blk2short(a)            saveblk(a)
1081 #define short2blk(a)            saveblk(a)
1082 #define short2str(a)            caching_strip(a)
1083 #else
1084 #ifdef WIDE_STRINGS
1085 #define Strchr(a, b)            wcschr(a, b)
1086 #define Strrchr(a, b)           wcsrchr(a, b)
1087 #define Strcat(a, b)            wcscat(a, b)
1088 #define Strncat(a, b, c)        wcsncat(a, b, c)
1089 #define Strcpy(a, b)            wcscpy(a, b)
1090 #define Strncpy(a, b, c)        wcsncpy(a, b, c)
1091 #define Strlen(a)               wcslen(a)
1092 #define Strcmp(a, b)            wcscmp(a, b)
1093 #define Strncmp(a, b, c)        wcsncmp(a, b, c)
1094 #else
1095 #define Strchr(a, b)            s_strchr(a, b)
1096 #define Strrchr(a, b)           s_strrchr(a, b)
1097 #define Strcat(a, b)            s_strcat(a, b)
1098 #define Strncat(a, b, c)        s_strncat(a, b, c)
1099 #define Strcpy(a, b)            s_strcpy(a, b)
1100 #define Strncpy(a, b, c)        s_strncpy(a, b, c)
1101 #define Strlen(a)               s_strlen(a)
1102 #define Strcmp(a, b)            s_strcmp(a, b)
1103 #define Strncmp(a, b, c)        s_strncmp(a, b, c)
1104 #endif
1105 #define Strcasecmp(a, b)        s_strcasecmp(a, b)
1106
1107 #define Strspl(a, b)            s_strspl(a, b)
1108 #define Strnsave(a, b)          s_strnsave(a, b)
1109 #define Strsave(a)              s_strsave(a)
1110 #define Strend(a)               s_strend(a)
1111 #define Strstr(a, b)            s_strstr(a, b)
1112 #endif
1113
1114 /*
1115  * setname is a macro to save space (see sh.err.c)
1116  */
1117 EXTERN const char   *bname;
1118
1119 #define setname(a)      (bname = (a))
1120
1121 #ifdef VFORK
1122 EXTERN Char   *Vsav;
1123 EXTERN Char   *Vdp;
1124 EXTERN Char   *Vexpath;
1125 EXTERN char  **Vt;
1126 #endif /* VFORK */
1127
1128 EXTERN Char  **evalvec;
1129 EXTERN Char   *evalp;
1130
1131 extern struct mesg {
1132     const char   *iname;        /* name from /usr/include */
1133     const char *pname;          /* print name */
1134 } mesg[];
1135
1136 /* word_chars is set by default to WORD_CHARS but can be overridden by
1137    the worchars variable--if unset, reverts to WORD_CHARS */
1138
1139 EXTERN Char   *word_chars;
1140
1141 #define WORD_CHARS "*?_-.[]~="  /* default chars besides alnums in words */
1142
1143 EXTERN Char   *STR_SHELLPATH;
1144
1145 #ifdef _PATH_BSHELL
1146 EXTERN Char   *STR_BSHELL;
1147 #endif
1148 EXTERN Char   *STR_WORD_CHARS;
1149 EXTERN Char  **STR_environ IZERO;
1150
1151 extern int     dont_free;       /* Tell free that we are in danger if we free */
1152
1153 extern Char    *INVPTR;
1154 extern Char    **INVPPTR;
1155
1156 extern char    *progname;
1157 extern int      tcsh;
1158 extern int      xlate_cr;
1159 extern int      output_raw;
1160 extern int      lbuffed;
1161 extern time_t   Htime;
1162 extern int      numeof;
1163 extern int      insource;
1164 extern char     linbuf[];
1165 extern char     *linp;
1166 extern int      nsig;
1167 #ifdef VFORK
1168 extern int      use_fork;
1169 #endif
1170 extern int      tellwhat;
1171 extern int      NoNLSRebind;
1172 #if !HAVE_DECL_ENVIRON
1173 extern char   **environ;
1174 #endif
1175
1176 #include "tc.h"
1177
1178 #ifndef WINNT_NATIVE
1179 # ifdef NLS_CATALOGS
1180 #  if defined(linux) || defined(__GNU__) || defined(__GLIBC__)
1181 #   include <locale.h>
1182 #   ifdef notdef
1183 #    include <localeinfo.h>     /* Has this changed ? */
1184 #   endif
1185 #   include <features.h>
1186 #  endif
1187 #  ifdef SUNOS4
1188    /* Who stole my nl_types.h? :-(
1189     * All this stuff is in the man pages, but nowhere else?
1190     * This does not link right now...
1191     */
1192    typedef void *nl_catd;
1193    extern const char * catgets (nl_catd, int, int, const char *);
1194    nl_catd catopen (const char *, int);
1195    int catclose (nl_catd);
1196 #  else
1197 #   ifdef __uxps__
1198 #    define gettxt gettxt_ds
1199 #   endif
1200 #   include <nl_types.h>
1201 #   ifdef __uxps__
1202 #    undef gettxt
1203 #   endif
1204 #  endif
1205 #  ifndef MCLoadBySet
1206 #   define MCLoadBySet 0
1207 #  endif
1208 EXTERN nl_catd catd;
1209 #  if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
1210 #   define CGETS(b, c, d)       iconv_catgets(catd, b, c, d)
1211 #  else
1212 #   define CGETS(b, c, d)       xcatgets(catd, b, c, d)
1213 #  endif
1214 #  define CSAVS(b, c, d)        strsave(CGETS(b, c, d))
1215 # else
1216 #  define CGETS(b, c, d)        d
1217 #  define CSAVS(b, c, d)        d
1218 # endif
1219 #else /* WINNT_NATIVE */
1220 # define CGETS(b, c, d) nt_cgets( b, c, d)
1221 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1222 #endif /* WINNT_NATIVE */
1223
1224 #if defined(FILEC)
1225 extern int    filec;
1226 #endif /* FILEC */
1227
1228 #include "sh.decls.h"
1229 /*
1230  * Since on some machines characters are unsigned, and the signed
1231  * keyword is not universally implemented, we treat all characters
1232  * as unsigned and sign extend them where we need.
1233  */
1234 #define SIGN_EXTEND_CHAR(a)     (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1235
1236 /*
1237  * explanation for use by the "--help" option
1238  */
1239 #define HELP_STRING "\
1240 -b file         batch mode, read and execute commands from `file' \n\
1241 -c command      run `command' from next argument \n\
1242 -d              load directory stack from `~/.cshdirs' \n\
1243 -Dname[=value]  define environment variable `name' to `value' (DomainOS only) \n\
1244 -e              exit on any error \n\
1245 -f              start faster by ignoring the start-up file \n\
1246 -F              use fork() instead of vfork() when spawning (ConvexOS only) \n\
1247 -i              interactive, even when input is not from a terminal \n\
1248 -l              act as a login shell, must be the only option specified \n\
1249 -m              load the start-up file, whether or not owned by effective user \n\
1250 -n file         no execute mode, just check syntax of the following `file' \n\
1251 -q              accept SIGQUIT for running under a debugger \n\
1252 -s              read commands from standard input \n\
1253 -t              read one line from standard input \n\
1254 -v              echo commands after history substitution \n\
1255 -V              like -v but including commands read from the start-up file \n\
1256 -x              echo commands immediately before execution \n\
1257 -X              like -x but including commands read from the start-up file \n\
1258 --help          print this message and exit \n\
1259 --version       print the version shell variable and exit \n\
1260 \nSee the tcsh(1) manual page for detailed information.\n"
1261
1262 #include "tc.nls.h"
1263
1264 #endif /* _h_sh */