contrib/tcsh/sh.h

   1 /* $Header: /src/pub/tcsh/sh.h,v 3.108 2002/07/23 16:13:22 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 #ifndef HAVE_QUAD
  39 #ifdef __GNUC__
  40 #define HAVE_QUAD       1
  41 #endif
  42 #endif
  43
  44 #ifndef EXTERN
  45 # define EXTERN extern
  46 #else /* !EXTERN */
  47 # ifdef WINNT_NATIVE
  48 #  define IZERO = 0
  49 #  define IZERO_STRUCT = {0}
  50 # endif /* WINNT_NATIVE */
  51 #endif /* EXTERN */
  52
  53 #ifndef IZERO
  54 # define IZERO
  55 #endif /* IZERO */
  56 #ifndef IZERO_STRUCT
  57 # define IZERO_STRUCT
  58 # endif /* IZERO_STRUCT */
  59
  60 #ifndef WINNT_NATIVE
  61 # define INIT_ZERO
  62 # define INIT_ZERO_STRUCT
  63 # define force_read read
  64 #endif /*!WINNT_NATIVE */
  65 /*
  66  * Sanity
  67  */
  68 #if defined(_POSIX_SOURCE) && !defined(POSIX)
  69 # define POSIX
  70 #endif
  71
  72 #if defined(POSIXJOBS) && !defined(BSDJOBS)
  73 # define BSDJOBS
  74 #endif
  75
  76 #if defined(POSIXSIGS) && !defined(BSDSIGS)
  77 # define BSDSIGS
  78 #endif
  79
  80 #ifdef SHORT_STRINGS
  81 typedef short Char;
  82 typedef unsigned short uChar;
  83 # define SAVE(a) (Strsave(str2short(a)))
  84 #else
  85 typedef char Char;
  86 typedef unsigned char uChar;
  87 # define SAVE(a) (strsave(a))
  88 #endif
  89
  90 /* Elide unused argument warnings */
  91 #define USE(a)  (void) (a)
  92 /*
  93  * If your compiler complains, then you can either
  94  * throw it away and get gcc or, use the following define
  95  * and get rid of the typedef.
  96  * [The 4.2/3BSD vax compiler does not like that]
  97  * Both MULTIFLOW and PCC compilers exhbit this bug.  -- sterling@netcom.com
  98  */
  99 #ifdef SIGVOID
 100 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
 101 #  define sigret_t void
 102 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
 103 typedef void sigret_t;
 104 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
 105 #else /* !SIGVOID */
 106 typedef int sigret_t;
 107 #endif /* SIGVOID */
 108
 109 /*
 110  * Return true if the path is absolute
 111  */
 112 #if defined(WINNT_NATIVE) || defined(__CYGWIN__)
 113 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 114     (Isalpha((p)[0]) && (p)[1] == ':'))
 115 #else /* !WINNT_NATIVE && !__CYGWIN__ */
 116 # define ABSOLUTEP(p)   (*(p) == '/')
 117 #endif /* WINNT_NATIVE || __CYGWIN__ */
 118
 119 /*
 120  * Fundamental definitions which may vary from system to system.
 121  *
 122  *      BUFSIZE         The i/o buffering size; also limits word size
 123  *      MAILINTVL       How often to mailcheck; more often is more expensive
 124  */
 125 #ifdef BUFSIZE
 126 # if       BUFSIZE < 4096
 127 #  undef   BUFSIZE
 128 #  define  BUFSIZE      4096    /* buffer size should be no less than this */
 129 # endif
 130 #else
 131 # define   BUFSIZE      4096
 132 #endif /* BUFSIZE */
 133
 134 #define FORKSLEEP       10      /* delay loop on non-interactive fork failure */
 135 #define MAILINTVL       600     /* 10 minutes */
 136
 137 #ifndef INBUFSIZE
 138 # define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
 139 #endif /* INBUFSIZE */
 140
 141
 142 /*
 143  * What our builtin echo looks like
 144  */
 145 #define NONE_ECHO       0
 146 #define BSD_ECHO        1
 147 #define SYSV_ECHO       2
 148 #define BOTH_ECHO       (BSD_ECHO|SYSV_ECHO)
 149
 150 #ifndef ECHO_STYLE
 151 # if SYSVREL > 0
 152 #  define ECHO_STYLE SYSV_ECHO
 153 # else /* SYSVREL == 0 */
 154 #  define ECHO_STYLE BSD_ECHO
 155 # endif /* SYSVREL */
 156 #endif /* ECHO_STYLE */
 157
 158 /*
 159  * The shell moves std in/out/diag and the old std input away from units
 160  * 0, 1, and 2 so that it is easy to set up these standards for invoked
 161  * commands.
 162  */
 163 #define FSHTTY  15              /* /dev/tty when manip pgrps */
 164 #define FSHIN   16              /* Preferred desc for shell input */
 165 #define FSHOUT  17              /* ... shell output */
 166 #define FSHDIAG 18              /* ... shell diagnostics */
 167 #define FOLDSTD 19              /* ... old std input */
 168
 169 #ifdef PROF
 170 #define xexit(n)        done(n)
 171 #endif
 172
 173 #ifdef cray
 174 # define word word_t           /* sys/types.h defines word.. bad move! */
 175 #endif
 176
 177 #include <sys/types.h>
 178
 179 #ifdef cray
 180 # undef word
 181 #endif
 182
 183 /*
 184  * Path separator in environment variables
 185  */
 186 #ifndef PATHSEP
 187 # if defined(__EMX__) || defined(WINNT_NATIVE)
 188 #  define PATHSEP ';'
 189 # else /* unix */
 190 #  define PATHSEP ':'
 191 # endif /* __EMX__ || WINNT_NATIVE */
 192 #endif /* !PATHSEP */
 193
 194 #if defined(__HP_CXD_SPP) && !defined(__hpux)
 195 # include <sys/cnx_stat.h>
 196 # define stat stat64
 197 # define fstat fstat64
 198 # define lstat lstat64
 199 #endif /* __HP_CXD_SPP && !__hpux */
 200
 201 /*
 202  * This macro compares the st_dev field of struct stat. On aix on ibmESA
 203  * st_dev is a structure, so comparison does not work.
 204  */
 205 #ifndef DEV_DEV_COMPARE
 206 # define DEV_DEV_COMPARE(x,y)   ((x) == (y))
 207 #endif /* DEV_DEV_COMPARE */
 208
 209 #ifdef _SEQUENT_
 210 # include <sys/procstats.h>
 211 #endif /* _SEQUENT_ */
 212 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
 213 # include <sys/times.h>
 214 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
 215
 216 #ifdef NLS
 217 # include <locale.h>
 218 #endif /* NLS */
 219
 220
 221 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
 222 # include <sys/param.h>
 223 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
 224 #include <sys/stat.h>
 225
 226 #if defined(BSDTIMES) || defined(BSDLIMIT)
 227 # include <sys/time.h>
 228 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
 229 #  include "/usr/ucbinclude/sys/resource.h"
 230 # else
 231 #  ifdef convex
 232 #   define sysrusage cvxrusage
 233 #   include <sys/sysinfo.h>
 234 #  else
 235 #   define sysrusage rusage
 236 #   include <sys/resource.h>
 237 #  endif /* convex */
 238 # endif /* SYSVREL>3 */
 239 #endif /* BSDTIMES */
 240
 241 #ifndef WINNT_NATIVE
 242 # ifndef POSIX
 243 #  ifdef TERMIO
 244 #   include <termio.h>
 245 #  else /* SGTTY */
 246 #   include <sgtty.h>
 247 #  endif /* TERMIO */
 248 # else /* POSIX */
 249 #  ifndef _UWIN
 250 #   include <termios.h>
 251 #  else
 252 #   include <termio.h>
 253 #  endif /* _UWIN */
 254 #  if SYSVREL > 3
 255 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 256 #   undef TIOCSLTC
 257 #   undef CSWTCH
 258 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 259 #  endif /* SYSVREL > 3 */
 260 # endif /* POSIX */
 261 #endif /* WINNT_NATIVE */
 262
 263 #ifdef sonyrisc
 264 # include <sys/ttold.h>
 265 #endif /* sonyrisc */
 266
 267 #if defined(POSIX) && !defined(WINNT_NATIVE)
 268 /*
 269  * We should be using setpgid and setpgid
 270  * by now, but in some systems we use the
 271  * old routines...
 272  */
 273 # if !defined(__APPLE__)
 274 # define getpgrp __getpgrp
 275 # define setpgrp __setpgrp
 276 # endif
 277 # include <unistd.h>
 278 # undef getpgrp
 279 # undef setpgrp
 280
 281 /*
 282  * the gcc+protoize version of <stdlib.h>
 283  * redefines malloc(), so we define the following
 284  * to avoid it.
 285  */
 286 # if defined(SYSMALLOC) || defined(linux) || defined(sgi) || defined(_OSD_POSIX)
 287 #  define NO_FIX_MALLOC
 288 #  include <stdlib.h>
 289 # else /* linux */
 290 #  define _GNU_STDLIB_H
 291 #  define malloc __malloc
 292 #  define free __free
 293 #  define calloc __calloc
 294 #  define realloc __realloc
 295 #  include <stdlib.h>
 296 #  undef malloc
 297 #  undef free
 298 #  undef calloc
 299 #  undef realloc
 300 # endif /* linux || sgi */
 301 # include <limits.h>
 302 #endif /* POSIX && !WINNT_NATIVE */
 303
 304 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux)
 305 # if !defined(pyr) && !defined(stellar)
 306 #  include <time.h>
 307 #  ifdef _MINIX
 308 #   define HZ CLOCKS_PER_SEC
 309 #  endif /* _MINIX */
 310 # endif /* !pyr && !stellar */
 311 #endif /* SYSVREL > 0 ||  _IBMR2 */
 312
 313 /* In the following ifdef the DECOSF1 has been commented so that later
 314  * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
 315  */
 316 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
 317 # if !defined(COHERENT) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
 318 #  include <sys/ioctl.h>
 319 # endif
 320 #endif
 321
 322 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
 323 #undef CSWTCH
 324 #define CSWTCH _POSIX_VDISABLE
 325 #endif
 326
 327 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
 328 # include <sys/filio.h>
 329 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
 330
 331 #if !defined(_MINIX) && !defined(COHERENT) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
 332 # include <sys/file.h>
 333 #endif  /* !_MINIX && !COHERENT && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
 334
 335 #if !defined(O_RDONLY) || !defined(O_NDELAY)
 336 # include <fcntl.h>
 337 #endif
 338
 339 #include <errno.h>
 340
 341 #include <setjmp.h>
 342
 343 #if __STDC__ || defined(FUNCPROTO)
 344 # include <stdarg.h>
 345 #else
 346 #ifdef  _MINIX
 347 # include "mi.varargs.h"
 348 #else
 349 # include <varargs.h>
 350 #endif  /* _MINIX */
 351 #endif
 352
 353 #ifdef DIRENT
 354 # include <dirent.h>
 355 #else
 356 # ifdef hp9000s500
 357 #  include <ndir.h>
 358 # else
 359 #  include <sys/dir.h>
 360 # endif
 361 # define dirent direct
 362 #endif /* DIRENT */
 363 #if defined(hpux) || defined(sgi) || defined(OREO) || defined(COHERENT)
 364 # include <stdio.h>     /* So the fgetpwent() prototypes work */
 365 #endif /* hpux || sgi || OREO || COHERENT */
 366 #ifndef WINNT_NATIVE
 367 #include <pwd.h>
 368 #include <grp.h>
 369 #endif /* WINNT_NATIVE */
 370 #ifdef PW_SHADOW
 371 # include <shadow.h>
 372 #endif /* PW_SHADOW */
 373 #ifdef PW_AUTH
 374 # include <auth.h>
 375 #endif /* PW_AUTH */
 376 #if defined(BSD) && !defined(POSIX)
 377 # include <strings.h>
 378 # define strchr(a, b) index(a, b)
 379 # define strrchr(a, b) rindex(a, b)
 380 #else
 381 # include <string.h>
 382 #endif /* BSD */
 383
 384 /*
 385  * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
 386  * include it yet, so we include it here
 387  */
 388 #if defined(sgi) && SYSVREL > 3
 389 # include <sys/cdefs.h>
 390 #endif /* sgi && SYSVREL > 3 */
 391
 392 #ifdef REMOTEHOST
 393 # ifdef ISC
 394 #  undef MAXHOSTNAMELEN /* Busted headers? */
 395 # endif
 396
 397 # include <netinet/in.h>
 398 # include <arpa/inet.h>
 399 # include <sys/socket.h>
 400 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && !defined(NO_SS_FAMILY)
 401 #  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
 402 #   if !defined(sgi)
 403 #    define INET6
 404 #   endif /* sgi */
 405 #  endif /* __APPLE__ */
 406 # endif
 407 # include <sys/uio.h>   /* For struct iovec */
 408 #endif /* REMOTEHOST */
 409
 410 /*
 411  * ANSIisms... These must be *after* the system include and
 412  * *before* our includes, so that BSDreno has time to define __P
 413  */
 414 #undef __P
 415 #ifndef __P
 416 # if __STDC__ || defined(FUNCPROTO)
 417 #  ifndef FUNCPROTO
 418 #   define FUNCPROTO
 419 #  endif
 420 #  define __P(a) a
 421 # else
 422 #  define __P(a) ()
 423 #  if !__STDC__
 424 #   define const
 425 #   ifndef apollo
 426 #    define volatile    /* Apollo 'c' extensions need this */
 427 #   endif /* apollo */
 428 #  endif
 429 # endif
 430 #endif
 431
 432
 433 #ifdef PURIFY
 434 /* exit normally, allowing purify to trace leaks */
 435 # define _exit          exit
 436 typedef  int            pret_t;
 437 #else /* !PURIFY */
 438 /*
 439  * If your compiler complains, then you can either
 440  * throw it away and get gcc or, use the following define
 441  * and get rid of the typedef.
 442  * [The 4.2/3BSD vax compiler does not like that]
 443  * Both MULTIFLOW and PCC compilers exhbit this bug.  -- sterling@netcom.com
 444  */
 445 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
 446 #  define pret_t void
 447 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
 448 typedef void pret_t;
 449 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
 450 #endif /* PURIFY */
 451
 452 typedef int bool;
 453
 454 /*
 455  * ASCII vs. EBCDIC
 456  */
 457 #if 'Z' - 'A' == 25
 458 # ifndef IS_ASCII
 459 #  define IS_ASCII
 460 # endif
 461 #endif
 462
 463 #include "sh.types.h"
 464
 465 #ifndef WINNT_NATIVE
 466 # ifndef POSIX
 467 extern pid_t getpgrp __P((int));
 468 # else /* POSIX */
 469 #  if (defined(BSD) && !defined(BSD4_4)) || defined(SUNOS4) || defined(IRIS4D) || defined(DGUX)
 470 extern pid_t getpgrp __P((int));
 471 #  else /* !(BSD || SUNOS4 || IRIS4D || DGUX) */
 472 extern pid_t getpgrp __P((void));
 473 #  endif        /* BSD || SUNOS4 || IRISD || DGUX */
 474 # endif /* POSIX */
 475 extern pid_t setpgrp __P((pid_t, pid_t));
 476 #endif /* !WINNT_NATIVE */
 477
 478 typedef sigret_t (*signalfun_t) __P((int));
 479
 480 #ifndef lint
 481 typedef ptr_t memalign_t;
 482 #else
 483 typedef union {
 484     char    am_char, *am_char_p;
 485     short   am_short, *am_short_p;
 486     int     am_int, *am_int_p;
 487     long    am_long, *am_long_p;
 488     float   am_float, *am_float_p;
 489     double  am_double, *am_double_p;
 490 }      *memalign_t;
 491
 492 # define malloc         lint_malloc
 493 # define free           lint_free
 494 # define realloc        lint_realloc
 495 # define calloc         lint_calloc
 496 #endif
 497
 498 #ifdef MDEBUG
 499 extern memalign_t       DebugMalloc     __P((unsigned, char *, int));
 500 extern memalign_t       DebugRealloc    __P((ptr_t, unsigned, char *, int));
 501 extern memalign_t       DebugCalloc     __P((unsigned, unsigned, char *, int));
 502 extern void             DebugFree       __P((ptr_t, char *, int));
 503 # define xmalloc(i)     DebugMalloc(i, __FILE__, __LINE__)
 504 # define xrealloc(p, i)((p) ? DebugRealloc(p, i, __FILE__, __LINE__) : \
 505                               DebugMalloc(i, __FILE__, __LINE__))
 506 # define xcalloc(n, s)  DebugCalloc(n, s, __FILE__, __LINE__)
 507 # define xfree(p)       if (p) DebugFree(p, __FILE__, __LINE__)
 508 #else
 509 # ifdef SYSMALLOC
 510 #  define xmalloc(i)            smalloc(i)
 511 #  define xrealloc(p, i)        srealloc(p, i)
 512 #  define xcalloc(n, s)         scalloc(n, s)
 513 #  define xfree(p)              sfree(p)
 514 # else
 515 #  define xmalloc(i)            malloc(i)
 516 #  define xrealloc(p, i)        realloc(p, i)
 517 #  define xcalloc(n, s)         calloc(n, s)
 518 #  define xfree(p)              free(p)
 519 # endif /* SYSMALLOC */
 520 #endif /* MDEBUG */
 521 #include "sh.char.h"
 522 #include "sh.err.h"
 523 #include "sh.dir.h"
 524 #include "sh.proc.h"
 525
 526 #include "pathnames.h"
 527
 528
 529 /*
 530  * C shell
 531  *
 532  * Bill Joy, UC Berkeley
 533  * October, 1978; May 1980
 534  *
 535  * Jim Kulp, IIASA, Laxenburg Austria
 536  * April, 1980
 537  */
 538
 539 #if !defined(MAXNAMLEN) && defined(_D_NAME_MAX)
 540 # define MAXNAMLEN _D_NAME_MAX
 541 #endif /* MAXNAMLEN */
 542
 543 #ifdef HESIOD
 544 # include <hesiod.h>
 545 #endif /* HESIOD */
 546
 547 #ifdef REMOTEHOST
 548 # include <netdb.h>
 549 #endif /* REMOTEHOST */
 550
 551 #ifndef MAXHOSTNAMELEN
 552 # if defined(SCO) && (SYSVREL > 3)
 553 #  include <sys/socket.h>
 554 # else
 555 #  define MAXHOSTNAMELEN 256
 556 # endif
 557 #endif /* MAXHOSTNAMELEN */
 558
 559
 560
 561 #define eq(a, b)        (Strcmp(a, b) == 0)
 562
 563 /* globone() flags */
 564 #define G_ERROR         0       /* default action: error if multiple words */
 565 #define G_IGNORE        1       /* ignore the rest of the words            */
 566 #define G_APPEND        2       /* make a sentence by cat'ing the words    */
 567
 568 /*
 569  * Global flags
 570  */
 571 EXTERN bool    chkstop IZERO;   /* Warned of stopped jobs... allow exit */
 572
 573 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
 574 # define CLOSE_ON_EXEC
 575 #else
 576 EXTERN bool    didcch IZERO;    /* Have closed unused fd's for child */
 577 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
 578
 579 EXTERN bool    didfds IZERO;    /* Have setup i/o fd's for child */
 580 EXTERN bool    doneinp IZERO;   /* EOF indicator after reset from readc */
 581 EXTERN bool    exiterr IZERO;   /* Exit if error or non-zero exit status */
 582 EXTERN bool    child IZERO;     /* Child shell ... errors cause exit */
 583 EXTERN bool    haderr IZERO;    /* Reset was because of an error */
 584 EXTERN bool    intty IZERO;     /* Input is a tty */
 585 EXTERN bool    intact IZERO;    /* We are interactive... therefore prompt */
 586 EXTERN bool    justpr IZERO;    /* Just print because of :p hist mod */
 587 EXTERN bool    loginsh IZERO;   /* We are a loginsh -> .login/.logout */
 588 EXTERN bool    neednote IZERO;  /* Need to pnotify() */
 589 EXTERN bool    noexec IZERO;    /* Don't execute, just syntax check */
 590 EXTERN bool    pjobs IZERO;     /* want to print jobs if interrupted */
 591 EXTERN bool    setintr IZERO;   /* Set interrupts on/off -> Wait intr... */
 592 EXTERN bool    timflg IZERO;    /* Time the next waited for command */
 593 EXTERN bool    havhash IZERO;   /* path hashing is available */
 594 EXTERN bool    editing IZERO;   /* doing filename expansion and line editing */
 595 EXTERN bool    noediting IZERO; /* initial $term defaulted to noedit */
 596 EXTERN bool    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
 597 EXTERN bool    isoutatty IZERO; /* is SHOUT a tty */
 598 EXTERN bool    isdiagatty IZERO;/* is SHDIAG a tty */
 599 EXTERN bool    is1atty IZERO;   /* is file descriptor 1 a tty (didfds mode) */
 600 EXTERN bool    is2atty IZERO;   /* is file descriptor 2 a tty (didfds mode) */
 601 EXTERN bool    arun IZERO;      /* Currently running multi-line-aliases */
 602 EXTERN int     implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
 603 EXTERN bool    inheredoc IZERO; /* Currently parsing a heredoc */
 604 EXTERN bool    windowchg IZERO; /* We received a window change event */
 605
 606 /*
 607  * Global i/o info
 608  */
 609 EXTERN Char   *arginp IZERO;    /* Argument input for sh -c and internal `xx` */
 610 EXTERN int     onelflg IZERO;   /* 2 -> need line for -t, 1 -> exit on read */
 611 extern Char   *ffile;           /* Name of shell file for $0 */
 612 extern bool    dolzero;         /* if $?0 should return true... */
 613
 614 #if defined(FILEC) && defined(TIOCSTI)
 615 extern bool    filec;
 616 #endif /* FILEC && TIOCSTI */
 617
 618 extern char *seterr;            /* Error message from scanner/parser */
 619 #if !defined(BSD4_4) && !defined(__linux__)
 620 extern int errno;               /* Error from C library routines */
 621 #endif
 622 extern int exitset;
 623 EXTERN Char   *shtemp IZERO;    /* Temp name for << shell files in /tmp */
 624
 625 #ifdef BSDTIMES
 626 EXTERN struct timeval time0;    /* Time at which the shell started */
 627 EXTERN struct sysrusage ru0;
 628 #else
 629 # ifdef _SEQUENT_
 630 EXTERN timeval_t time0;         /* time at which shell started */
 631 EXTERN struct process_stats ru0;
 632 # else /* _SEQUENT_ */
 633 #  ifndef POSIX
 634 EXTERN time_t  time0;           /* time at which shell started */
 635 #  else /* POSIX */
 636 EXTERN clock_t time0;           /* time at which shell started */
 637 EXTERN clock_t clk_tck;
 638 #  endif /* POSIX */
 639 EXTERN struct tms shtimes;      /* shell and child times for process timing */
 640 # endif /* _SEQUENT_ */
 641 EXTERN long seconds0;
 642 #endif /* BSDTIMES */
 643
 644 #ifndef HZ
 645 # define HZ     100             /* for division into seconds */
 646 #endif
 647
 648 /*
 649  * Miscellany
 650  */
 651 EXTERN Char   *doldol;          /* Character pid for $$ */
 652 EXTERN int     backpid;         /* pid of the last background job */
 653
 654 /*
 655  * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
 656  * cause pid's could be unsigned and that would break our -1 flag, and
 657  * uid_t and gid_t are not defined in all the systems so I would have to
 658  * make special cases for them. In the future...
 659  */
 660 EXTERN int     uid, euid,       /* Invokers real and effective */
 661                gid, egid;       /* User and group ids */
 662 EXTERN int     opgrp,           /* Initial pgrp and tty pgrp */
 663                shpgrp,          /* Pgrp of shell */
 664                tpgrp;           /* Terminal process group */
 665                                 /* If tpgrp is -1, leave tty alone! */
 666
 667 EXTERN Char    PromptBuf[INBUFSIZE*2];  /* buffer for the actual printed prompt.
 668                                          * this must be large enough to contain
 669                                          * the input line and the prompt, in
 670                                          * case a correction occurred...
 671                                          */
 672 EXTERN Char    RPromptBuf[INBUFSIZE];   /* buffer for right-hand side prompt */
 673
 674 /*
 675  * To be able to redirect i/o for builtins easily, the shell moves the i/o
 676  * descriptors it uses away from 0,1,2.
 677  * Ideally these should be in units which are closed across exec's
 678  * (this saves work) but for version 6, this is not usually possible.
 679  * The desired initial values for these descriptors are defined in
 680  * sh.local.h.
 681  */
 682 EXTERN int   SHIN IZERO;        /* Current shell input (script) */
 683 EXTERN int   SHOUT IZERO;       /* Shell output */
 684 EXTERN int   SHDIAG IZERO;      /* Diagnostic output... shell errs go here */
 685 EXTERN int   OLDSTD IZERO;      /* Old standard input (def for cmds) */
 686
 687
 688 #if SYSVREL == 4 && defined(_UTS)
 689 /*
 690  * From: fadden@uts.amdahl.com (Andy McFadden)
 691  * we need sigsetjmp for UTS4, but not UTS2.1
 692  */
 693 # define SIGSETJMP
 694 #endif
 695
 696 /*
 697  * Error control
 698  *
 699  * Errors in scanning and parsing set up an error message to be printed
 700  * at the end and complete.  Other errors always cause a reset.
 701  * Because of source commands and .cshrc we need nested error catches.
 702  */
 703
 704 #ifdef NO_STRUCT_ASSIGNMENT
 705
 706 # ifdef SIGSETJMP
 707    typedef sigjmp_buf jmp_buf_t;
 708    /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */
 709 #  define setexit()  sigsetjmp(reslab)
 710 #  define reset()    siglongjmp(reslab, 1)
 711 # else
 712    typedef jmp_buf jmp_buf_t;
 713    /* bugfix by Jak Kirman @ Brown U.: remove the (void) cast here, see sh.c */
 714 #  define setexit()  setjmp(reslab)
 715 #  define reset()    longjmp(reslab, 1)
 716 # endif
 717 # define getexit(a) (void) memmove((ptr_t)&(a), (ptr_t)&reslab, sizeof(reslab))
 718 # define resexit(a) (void) memmove((ptr_t)&reslab, (ptr_t)&(a), sizeof(reslab))
 719
 720 # define cpybin(a, b) (void) memmove((ptr_t)&(a), (ptr_t)&(b), sizeof(Bin))
 721
 722 #else
 723
 724 # ifdef SIGSETJMP
 725    typedef struct { sigjmp_buf j; } jmp_buf_t;
 726 #  define setexit()  sigsetjmp(reslab.j)
 727 #  define reset()    siglongjmp(reslab.j, 1)
 728 # else
 729    typedef struct { jmp_buf j; } jmp_buf_t;
 730 #  define setexit()  setjmp(reslab.j)
 731 #  define reset()    longjmp(reslab.j, 1)
 732 # endif
 733
 734 # define getexit(a) (void) ((a) = reslab)
 735 # define resexit(a) (void) (reslab = (a))
 736
 737 # define cpybin(a, b) (void) ((a) = (b))
 738
 739 #endif  /* NO_STRUCT_ASSIGNMENT */
 740
 741 extern jmp_buf_t reslab;
 742
 743 EXTERN Char   *gointr;          /* Label for an onintr transfer */
 744
 745 extern signalfun_t parintr;     /* Parents interrupt catch */
 746 extern signalfun_t parterm;     /* Parents terminate catch */
 747
 748 /*
 749  * Lexical definitions.
 750  *
 751  * All lexical space is allocated dynamically.
 752  * The eighth/sixteenth bit of characters is used to prevent recognition,
 753  * and eventually stripped.
 754  */
 755 #define         META            0200
 756 #define         ASCII           0177
 757 #ifdef SHORT_STRINGS
 758 # define        QUOTE   ((Char) 0100000)/* 16nth char bit used for 'ing */
 759 # define        TRIM            0077777 /* Mask to strip quote bit */
 760 # define        UNDER           0040000 /* Underline flag */
 761 # define        BOLD            0020000 /* Bold flag */
 762 # define        STANDOUT        0010000 /* Standout flag */
 763 # define        LITERAL         0004000 /* Literal character flag */
 764 # define        ATTRIBUTES      0074000 /* The bits used for attributes */
 765 # define        CHAR            0000377 /* Mask to mask out the character */
 766 #else
 767 # define        QUOTE   ((Char) 0200)   /* Eighth char bit used for 'ing */
 768 # define        TRIM            0177    /* Mask to strip quote bit */
 769 # define        UNDER           0000000 /* No extra bits to do both */
 770 # define        BOLD            0000000 /* Bold flag */
 771 # define        STANDOUT        META    /* Standout flag */
 772 # define        LITERAL         0000000 /* Literal character flag */
 773 # define        ATTRIBUTES      0200    /* The bits used for attributes */
 774 # define        CHAR            0000177 /* Mask to mask out the character */
 775 #endif
 776
 777 EXTERN int     AsciiOnly;       /* If set only 7 bits expected in characters */
 778
 779 /*
 780  * Each level of input has a buffered input structure.
 781  * There are one or more blocks of buffered input for each level,
 782  * exactly one if the input is seekable and tell is available.
 783  * In other cases, the shell buffers enough blocks to keep all loops
 784  * in the buffer.
 785  */
 786 EXTERN struct Bin {
 787     off_t   Bfseekp;            /* Seek pointer */
 788     off_t   Bfbobp;             /* Seekp of beginning of buffers */
 789     off_t   Bfeobp;             /* Seekp of end of buffers */
 790     int     Bfblocks;           /* Number of buffer blocks */
 791     Char  **Bfbuf;              /* The array of buffer blocks */
 792 }       B;
 793
 794 /*
 795  * This structure allows us to seek inside aliases
 796  */
 797 struct Ain {
 798     int type;
 799 #define TCSH_I_SEEK      0              /* Invalid seek */
 800 #define TCSH_A_SEEK      1              /* Alias seek */
 801 #define TCSH_F_SEEK      2              /* File seek */
 802 #define TCSH_E_SEEK      3              /* Eval seek */
 803     union {
 804         off_t _f_seek;
 805         Char* _c_seek;
 806     } fc;
 807 #define f_seek fc._f_seek
 808 #define c_seek fc._c_seek
 809     Char **a_seek;
 810 } ;
 811
 812 extern int aret;                /* Type of last char returned */
 813 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
 814                       (a)->f_seek == (b)->f_seek && \
 815                       (a)->a_seek == (b)->a_seek)
 816
 817 #define fseekp  B.Bfseekp
 818 #define fbobp   B.Bfbobp
 819 #define feobp   B.Bfeobp
 820 #define fblocks B.Bfblocks
 821 #define fbuf    B.Bfbuf
 822
 823 /*
 824  * The shell finds commands in loops by reseeking the input
 825  * For whiles, in particular, it reseeks to the beginning of the
 826  * line the while was on; hence the while placement restrictions.
 827  */
 828 EXTERN struct Ain lineloc;
 829
 830 EXTERN bool    cantell;         /* Is current source tellable ? */
 831
 832 /*
 833  * Input lines are parsed into doubly linked circular
 834  * lists of words of the following form.
 835  */
 836 struct wordent {
 837     Char   *word;
 838     struct wordent *prev;
 839     struct wordent *next;
 840 };
 841
 842 /*
 843  * During word building, both in the initial lexical phase and
 844  * when expanding $ variable substitutions, expansion by `!' and `$'
 845  * must be inhibited when reading ahead in routines which are themselves
 846  * processing `!' and `$' expansion or after characters such as `\' or in
 847  * quotations.  The following flags are passed to the getC routines
 848  * telling them which of these substitutions are appropriate for the
 849  * next character to be returned.
 850  */
 851 #define DODOL   1
 852 #define DOEXCL  2
 853 #define DOALL   DODOL|DOEXCL
 854
 855 /*
 856  * Labuf implements a general buffer for lookahead during lexical operations.
 857  * Text which is to be placed in the input stream can be stuck here.
 858  * We stick parsed ahead $ constructs during initial input,
 859  * process id's from `$$', and modified variable values (from qualifiers
 860  * during expansion in sh.dol.c) here.
 861  */
 862 EXTERN Char   *lap;
 863
 864 /*
 865  * Parser structure
 866  *
 867  * Each command is parsed to a tree of command structures and
 868  * flags are set bottom up during this process, to be propagated down
 869  * as needed during the semantics/exeuction pass (sh.sem.c).
 870  */
 871 struct command {
 872     unsigned char   t_dtyp;     /* Type of node                  */
 873 #define NODE_COMMAND    1       /* t_dcom <t_dlef >t_drit        */
 874 #define NODE_PAREN      2       /* ( t_dspr ) <t_dlef >t_drit    */
 875 #define NODE_PIPE       3       /* t_dlef | t_drit               */
 876 #define NODE_LIST       4       /* t_dlef ; t_drit               */
 877 #define NODE_OR         5       /* t_dlef || t_drit              */
 878 #define NODE_AND        6       /* t_dlef && t_drit              */
 879     unsigned char   t_nice;     /* Nice value                    */
 880 #ifdef apollo
 881     unsigned char   t_systype;  /* System environment            */
 882 #endif
 883     unsigned long   t_dflg;     /* Flags, e.g. F_AMPERSAND|...   */
 884 /* save these when re-doing      */
 885 #ifndef apollo
 886 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP|F_HUP)
 887 #else
 888 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
 889 #endif
 890 #define F_AMPERSAND     (1<<0)  /* executes in background        */
 891 #define F_APPEND        (1<<1)  /* output is redirected >>       */
 892 #define F_PIPEIN        (1<<2)  /* input is a pipe               */
 893 #define F_PIPEOUT       (1<<3)  /* output is a pipe              */
 894 #define F_NOFORK        (1<<4)  /* don't fork, last ()ized cmd   */
 895 #define F_NOINTERRUPT   (1<<5)  /* should be immune from intr's */
 896 /* spare */
 897 #define F_STDERR        (1<<7)  /* redirect unit 2 with unit 1   */
 898 #define F_OVERWRITE     (1<<8)  /* output was !                  */
 899 #define F_READ          (1<<9)  /* input redirection is <<       */
 900 #define F_REPEAT        (1<<10) /* reexec aft if, repeat,...     */
 901 #define F_NICE          (1<<11) /* t_nice is meaningful          */
 902 #define F_NOHUP         (1<<12) /* nohup this command            */
 903 #define F_TIME          (1<<13) /* time this command             */
 904 #define F_BACKQ         (1<<14) /* command is in ``              */
 905 #define F_HUP           (1<<15) /* hup this command              */
 906 #ifdef apollo
 907 #define F_VER           (1<<16) /* execute command under SYSTYPE */
 908 #endif
 909     union {
 910         Char   *T_dlef;         /* Input redirect word           */
 911         struct command *T_dcar; /* Left part of list/pipe        */
 912     }       L;
 913     union {
 914         Char   *T_drit;         /* Output redirect word          */
 915         struct command *T_dcdr; /* Right part of list/pipe       */
 916     }       R;
 917 #define t_dlef  L.T_dlef
 918 #define t_dcar  L.T_dcar
 919 #define t_drit  R.T_drit
 920 #define t_dcdr  R.T_dcdr
 921     Char  **t_dcom;             /* Command/argument vector       */
 922     struct command *t_dspr;     /* Pointer to ()'d subtree       */
 923 };
 924
 925
 926 /*
 927  * The keywords for the parser
 928  */
 929 #define TC_BREAK        0
 930 #define TC_BRKSW        1
 931 #define TC_CASE         2
 932 #define TC_DEFAULT      3
 933 #define TC_ELSE         4
 934 #define TC_END          5
 935 #define TC_ENDIF        6
 936 #define TC_ENDSW        7
 937 #define TC_EXIT         8
 938 #define TC_FOREACH      9
 939 #define TC_GOTO         10
 940 #define TC_IF           11
 941 #define TC_LABEL        12
 942 #define TC_LET          13
 943 #define TC_SET          14
 944 #define TC_SWITCH       15
 945 #define TC_TEST         16
 946 #define TC_THEN         17
 947 #define TC_WHILE        18
 948
 949 /*
 950  * These are declared here because they want to be
 951  * initialized in sh.init.c (to allow them to be made readonly)
 952  */
 953
 954 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
 955     /* Avoid hpux ansi mode spurious warnings */
 956 typedef void (*bfunc_t) ();
 957 #else
 958 typedef void (*bfunc_t) __P((Char **, struct command *));
 959 #endif /* hpux && __STDC__ && !__GNUC__ */
 960
 961 extern struct biltins {
 962     char   *bname;
 963     bfunc_t bfunct;
 964     int     minargs, maxargs;
 965 } bfunc[];
 966 extern int nbfunc;
 967 #ifdef WINNT_NATIVE
 968 extern struct biltins  nt_bfunc[];
 969 extern int nt_nbfunc;
 970 #endif /* WINNT_NATIVE*/
 971
 972 extern struct srch {
 973     char   *s_name;
 974     int     s_value;
 975 }       srchn[];
 976 extern 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  */
 983 EXTERN 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  */
 996 EXTERN 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  */
1021 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
1022 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
1023 EXTERN Char  **alvec IZERO_STRUCT,
1024               *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
1025
1026 /*
1027  * Filename/command name expansion variables
1028  */
1029 EXTERN int   gflag;             /* After tglob -> is globbing needed? */
1030
1031 #define MAXVARLEN 30            /* Maximum number of char in a variable name */
1032
1033 #ifndef MAXPATHLEN
1034 # define MAXPATHLEN 2048
1035 #endif /* MAXPATHLEN */
1036
1037 #ifndef MAXNAMLEN
1038 # define MAXNAMLEN 512
1039 #endif /* MAXNAMLEN */
1040
1041 #ifndef HAVENOLIMIT
1042 /*
1043  * resource limits
1044  */
1045 extern struct limits {
1046     int     limconst;
1047     char   *limname;
1048     int     limdiv;
1049     char   *limscale;
1050 } limits[];
1051 #endif /* !HAVENOLIMIT */
1052
1053 /*
1054  * Variables for filename expansion
1055  */
1056 extern Char **gargv;            /* Pointer to the (stack) arglist */
1057 extern int    gargc;            /* Number args in gargv */
1058
1059 /*
1060  * Variables for command expansion.
1061  */
1062 extern Char **pargv;            /* Pointer to the argv list space */
1063 EXTERN Char  *pargs;            /* Pointer to start current word */
1064 EXTERN long   pnleft;           /* Number of chars left in pargs */
1065 EXTERN Char  *pargcp;           /* Current index into pargs */
1066
1067 /*
1068  * History list
1069  *
1070  * Each history list entry contains an embedded wordlist
1071  * from the scanner, a number for the event, and a reference count
1072  * to aid in discarding old entries.
1073  *
1074  * Essentially "invisible" entries are put on the history list
1075  * when history substitution includes modifiers, and thrown away
1076  * at the next discarding since their event numbers are very negative.
1077  */
1078 EXTERN struct Hist {
1079     struct wordent Hlex;
1080     int     Hnum;
1081     int     Href;
1082     time_t  Htime;
1083     Char   *histline;
1084     struct Hist *Hnext;
1085 }       Histlist IZERO_STRUCT;
1086
1087 EXTERN struct wordent paraml;   /* Current lexical word list */
1088 EXTERN int     eventno;         /* Next events number */
1089 EXTERN int     lastev;          /* Last event reference (default) */
1090
1091 EXTERN Char    HIST;            /* history invocation character */
1092 EXTERN Char    HISTSUB;         /* auto-substitute character */
1093 EXTERN Char    PRCH;            /* Prompt symbol for regular users */
1094 EXTERN Char    PRCHROOT;        /* Prompt symbol for root */
1095
1096 /*
1097  * For operating systems with single case filenames (OS/2)
1098  */
1099 #ifdef CASE_INSENSITIVE
1100 # define samecase(x) (isupper((unsigned char)(x)) ? \
1101                       tolower((unsigned char)(x)) : (x))
1102 #else
1103 # define samecase(x) (x)
1104 #endif /* CASE_INSENSITIVE */
1105
1106 /*
1107  * strings.h:
1108  */
1109 #ifndef SHORT_STRINGS
1110 #define Strchr(a, b)            strchr(a, b)
1111 #define Strrchr(a, b)           strrchr(a, b)
1112 #define Strcat(a, b)            strcat(a, b)
1113 #define Strncat(a, b, c)        strncat(a, b, c)
1114 #define Strcpy(a, b)            strcpy(a, b)
1115 #define Strncpy(a, b, c)        strncpy(a, b, c)
1116 #define Strlen(a)               strlen(a)
1117 #define Strcmp(a, b)            strcmp(a, b)
1118 #define Strncmp(a, b, c)        strncmp(a, b, c)
1119
1120 #define Strspl(a, b)            strspl(a, b)
1121 #define Strsave(a)              strsave(a)
1122 #define Strend(a)               strend(a)
1123 #define Strstr(a, b)            strstr(a, b)
1124
1125 #define str2short(a)            (a)
1126 #define blk2short(a)            saveblk(a)
1127 #define short2blk(a)            saveblk(a)
1128 #define short2str(a)            strip(a)
1129 #else
1130 #define Strchr(a, b)            s_strchr(a, b)
1131 #define Strrchr(a, b)           s_strrchr(a, b)
1132 #define Strcat(a, b)            s_strcat(a, b)
1133 #define Strncat(a, b, c)        s_strncat(a, b, c)
1134 #define Strcpy(a, b)            s_strcpy(a, b)
1135 #define Strncpy(a, b, c)        s_strncpy(a, b, c)
1136 #define Strlen(a)               s_strlen(a)
1137 #define Strcmp(a, b)            s_strcmp(a, b)
1138 #define Strncmp(a, b, c)        s_strncmp(a, b, c)
1139
1140 #define Strspl(a, b)            s_strspl(a, b)
1141 #define Strsave(a)              s_strsave(a)
1142 #define Strend(a)               s_strend(a)
1143 #define Strstr(a, b)            s_strstr(a, b)
1144 #endif
1145
1146 /*
1147  * setname is a macro to save space (see sh.err.c)
1148  */
1149 EXTERN char   *bname;
1150
1151 #define setname(a)      (bname = (a))
1152
1153 #ifdef VFORK
1154 EXTERN Char   *Vsav;
1155 EXTERN Char   *Vdp;
1156 EXTERN Char   *Vexpath;
1157 EXTERN char  **Vt;
1158 #endif /* VFORK */
1159
1160 EXTERN Char  **evalvec;
1161 EXTERN Char   *evalp;
1162
1163 extern struct mesg {
1164     char   *iname;              /* name from /usr/include */
1165     char   *pname;              /* print name */
1166 }       mesg[];
1167
1168 /* word_chars is set by default to WORD_CHARS but can be overridden by
1169    the worchars variable--if unset, reverts to WORD_CHARS */
1170
1171 EXTERN Char   *word_chars;
1172
1173 #define WORD_CHARS "*?_-.[]~="  /* default chars besides alnums in words */
1174
1175 EXTERN Char   *STR_SHELLPATH;
1176
1177 #ifdef _PATH_BSHELL
1178 EXTERN Char   *STR_BSHELL;
1179 #endif
1180 EXTERN Char   *STR_WORD_CHARS;
1181 EXTERN Char  **STR_environ IZERO;
1182
1183 extern int     dont_free;       /* Tell free that we are in danger if we free */
1184
1185 extern Char    *INVPTR;
1186 extern Char    **INVPPTR;
1187
1188 extern char    *progname;
1189 extern int      tcsh;
1190
1191 #include "tc.h"
1192 #include "sh.decls.h"
1193
1194 /*
1195  * To print system call errors...
1196  */
1197 #ifdef BSD4_4
1198 # include <errno.h>
1199 #else
1200 # ifndef linux
1201 #  ifdef NEEDstrerror
1202 extern char *sys_errlist[];
1203 #  endif
1204 extern int errno, sys_nerr;
1205 # endif /* !linux */
1206 #endif
1207
1208 #ifndef WINNT_NATIVE
1209 # ifdef NLS_CATALOGS
1210 #  ifdef linux
1211 #   include <locale.h>
1212 #   ifdef notdef
1213 #    include <localeinfo.h>     /* Has this changed ? */
1214 #   endif
1215 #   include <features.h>
1216 #  endif
1217 #  ifdef SUNOS4
1218    /* Who stole my nl_types.h? :-(
1219     * All this stuff is in the man pages, but nowhere else?
1220     * This does not link right now...
1221     */
1222    typedef void *nl_catd;
1223    extern const char * catgets __P((nl_catd, int, int, const char *));
1224    nl_catd catopen __P((const char *, int));
1225    int catclose __P((nl_catd));
1226 #  else
1227 #   ifdef __uxps__
1228 #    define gettxt gettxt_ds
1229 #   endif
1230 #   include <nl_types.h>
1231 #   ifdef __uxps__
1232 #    undef gettxt
1233 #   endif
1234 #  endif
1235 #  ifndef MCLoadBySet
1236 #   define MCLoadBySet 0
1237 #  endif
1238 EXTERN nl_catd catd;
1239 #  define CGETS(b, c, d)        catgets(catd, b, c, d)
1240 #  define CSAVS(b, c, d)        strsave(CGETS(b, c, d))
1241 # else
1242 #  define CGETS(b, c, d)        d
1243 #  define CSAVS(b, c, d)        d
1244 # endif
1245 #else /* WINNT_NATIVE */
1246 # define CGETS(b, c, d) nt_cgets( b, c, d)
1247 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1248 #endif /* WINNT_NATIVE */
1249
1250 /*
1251  * Since on some machines characters are unsigned, and the signed
1252  * keyword is not universally implemented, we treat all characters
1253  * as unsigned and sign extend them where we need.
1254  */
1255 #define SIGN_EXTEND_CHAR(a)     (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1256
1257 #endif /* _h_sh */