contrib/tcsh-6/sh.h

   1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.150 2009/06/25 21:27:37 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)
  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() IGNORE(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 #define IGNORE(a)       ignore((intptr_t)a)
 120 static inline void ignore(intptr_t a)
 121 {
 122     USE(a);
 123 }
 124
 125 /*
 126  * Return true if the path is absolute
 127  */
 128 #if defined(WINNT_NATIVE)
 129 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 130     (Isalpha((p)[0]) && (p)[1] == ':'))
 131 #elif defined(__CYGWIN__)
 132 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 133     (Isalpha((p)[0]) && (p)[1] == ':' && \
 134      ((p)[2] == '\0' || (p)[2] == '/')))
 135 #else /* !WINNT_NATIVE && !__CYGWIN__ */
 136 # define ABSOLUTEP(p)   (*(p) == '/')
 137 #endif /* WINNT_NATIVE || __CYGWIN__ */
 138
 139 /*
 140  * Fundamental definitions which may vary from system to system.
 141  *
 142  *      BUFSIZE         The i/o buffering size; also limits word size
 143  *      MAILINTVL       How often to mailcheck; more often is more expensive
 144  */
 145 #ifdef BUFSIZE
 146 # if       BUFSIZE < 4096
 147 #  undef   BUFSIZE
 148 #  define  BUFSIZE      4096    /* buffer size should be no less than this */
 149 # endif
 150 #else
 151 # define   BUFSIZE      4096
 152 #endif /* BUFSIZE */
 153
 154 #define FORKSLEEP       10      /* delay loop on non-interactive fork failure */
 155 #define MAILINTVL       600     /* 10 minutes */
 156
 157 #ifndef INBUFSIZE
 158 # define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
 159 #endif /* INBUFSIZE */
 160
 161
 162 /*
 163  * What our builtin echo looks like
 164  */
 165 #define NONE_ECHO       0
 166 #define BSD_ECHO        1
 167 #define SYSV_ECHO       2
 168 #define BOTH_ECHO       (BSD_ECHO|SYSV_ECHO)
 169
 170 #ifndef ECHO_STYLE
 171 # if SYSVREL > 0
 172 #  define ECHO_STYLE SYSV_ECHO
 173 # else /* SYSVREL == 0 */
 174 #  define ECHO_STYLE BSD_ECHO
 175 # endif /* SYSVREL */
 176 #endif /* ECHO_STYLE */
 177
 178 /*
 179  * The shell moves std in/out/diag and the old std input away from units
 180  * 0, 1, and 2 so that it is easy to set up these standards for invoked
 181  * commands.
 182  */
 183 #define FSAFE   5               /* We keep the first 5 descriptors untouched */
 184 #define FSHTTY  15              /* /dev/tty when manip pgrps */
 185 #define FSHIN   16              /* Preferred desc for shell input */
 186 #define FSHOUT  17              /* ... shell output */
 187 #define FSHDIAG 18              /* ... shell diagnostics */
 188 #define FOLDSTD 19              /* ... old std input */
 189
 190 #ifdef PROF
 191 #define xexit(n)        done(n)
 192 #endif
 193
 194 #ifdef cray
 195 # define word word_t           /* sys/types.h defines word.. bad move! */
 196 #endif
 197
 198 #include <sys/types.h>
 199
 200 #ifdef cray
 201 # undef word
 202 #endif
 203
 204 /*
 205  * Path separator in environment variables
 206  */
 207 #ifndef PATHSEP
 208 # if defined(__EMX__) || defined(WINNT_NATIVE)
 209 #  define PATHSEP ';'
 210 # else /* unix */
 211 #  define PATHSEP ':'
 212 # endif /* __EMX__ || WINNT_NATIVE */
 213 #endif /* !PATHSEP */
 214
 215 #if defined(__HP_CXD_SPP) && !defined(__hpux)
 216 # include <sys/cnx_stat.h>
 217 # define stat stat64
 218 # define fstat fstat64
 219 # define lstat lstat64
 220 #endif /* __HP_CXD_SPP && !__hpux */
 221
 222 /*
 223  * This macro compares the st_dev field of struct stat. On aix on ibmESA
 224  * st_dev is a structure, so comparison does not work.
 225  */
 226 #ifndef DEV_DEV_COMPARE
 227 # define DEV_DEV_COMPARE(x,y)   ((x) == (y))
 228 #endif /* DEV_DEV_COMPARE */
 229
 230 #ifdef _SEQUENT_
 231 # include <sys/procstats.h>
 232 #endif /* _SEQUENT_ */
 233 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
 234 # include <sys/times.h>
 235 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
 236
 237 #ifdef NLS
 238 # include <locale.h>
 239 #endif /* NLS */
 240
 241
 242 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
 243 # include <sys/param.h>
 244 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
 245 #include <sys/stat.h>
 246
 247 #if defined(BSDTIMES) || defined(BSDLIMIT)
 248 # include <sys/time.h>
 249 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
 250 #  include "/usr/ucbinclude/sys/resource.h"
 251 # else
 252 #  ifdef convex
 253 #   define sysrusage cvxrusage
 254 #   include <sys/sysinfo.h>
 255 #  else
 256 #   define sysrusage rusage
 257 #   include <sys/resource.h>
 258 #  endif /* convex */
 259 # endif /* SYSVREL>3 */
 260 #endif /* BSDTIMES */
 261
 262 #ifndef WINNT_NATIVE
 263 # ifndef POSIX
 264 #  ifdef TERMIO
 265 #   include <termio.h>
 266 #  else /* SGTTY */
 267 #   include <sgtty.h>
 268 #  endif /* TERMIO */
 269 # else /* POSIX */
 270 #  ifndef _UWIN
 271 #   include <termios.h>
 272 #  else
 273 #   include <termio.h>
 274 #  endif /* _UWIN */
 275 #  if SYSVREL > 3
 276 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 277 #   undef TIOCSLTC
 278 #   undef CSWTCH
 279 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 280 #  endif /* SYSVREL > 3 */
 281 # endif /* POSIX */
 282 #endif /* WINNT_NATIVE */
 283
 284 #ifdef sonyrisc
 285 # include <sys/ttold.h>
 286 #endif /* sonyrisc */
 287
 288 #if defined(POSIX) && !defined(WINNT_NATIVE)
 289 # include <unistd.h>
 290
 291 /*
 292  * the gcc+protoize version of <stdlib.h>
 293  * redefines malloc(), so we define the following
 294  * to avoid it.
 295  */
 296 # if defined(SYSMALLOC) || defined(linux) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX)
 297 #  define NO_FIX_MALLOC
 298 #  include <stdlib.h>
 299 # else /* glibc */
 300 #  define _GNU_STDLIB_H
 301 #  define malloc __malloc
 302 #  define free __free
 303 #  define calloc __calloc
 304 #  define realloc __realloc
 305 #  include <stdlib.h>
 306 #  undef malloc
 307 #  undef free
 308 #  undef calloc
 309 #  undef realloc
 310 # endif /* glibc || sgi */
 311 #endif /* POSIX && !WINNT_NATIVE */
 312 #include <limits.h>
 313
 314 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(linux) || defined(__GNU__) || defined(__GLIBC__)
 315 # if !defined(pyr) && !defined(stellar)
 316 #  include <time.h>
 317 #  ifdef _MINIX
 318 #   define HZ CLOCKS_PER_SEC
 319 #  endif /* _MINIX */
 320 # endif /* !pyr && !stellar */
 321 #endif /* SYSVREL > 0 ||  _IBMR2 */
 322
 323 /* In the following ifdef the DECOSF1 has been commented so that later
 324  * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
 325  */
 326 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
 327 # if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
 328 #  include <sys/ioctl.h>
 329 # endif
 330 #endif
 331
 332 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
 333 #undef CSWTCH
 334 #define CSWTCH _POSIX_VDISABLE
 335 #endif
 336
 337 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
 338 # include <sys/filio.h>
 339 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
 340
 341 #if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
 342 # include <sys/file.h>
 343 #endif  /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
 344
 345 #if !defined(O_RDONLY) || !defined(O_NDELAY)
 346 # include <fcntl.h>
 347 #endif
 348 #ifndef O_LARGEFILE
 349 # define O_LARGEFILE 0
 350 #endif
 351
 352 #include <errno.h>
 353
 354 #include <setjmp.h>
 355
 356 #include <stdarg.h>
 357
 358 #ifdef HAVE_DIRENT_H
 359 # include <dirent.h>
 360 #else
 361 # ifdef HAVE_NDIR_H
 362 #  include <ndir.h>
 363 # else
 364 #  include <sys/dir.h>
 365 # endif
 366 # define dirent direct
 367 #endif /* HAVE_DIRENT_H */
 368 #ifndef HAVE_STRUCT_DIRENT_D_INO
 369 # define d_ino d_fileno
 370 #endif
 371 #if defined(hpux) || defined(sgi) || defined(OREO)
 372 # include <stdio.h>     /* So the fgetpwent() prototypes work */
 373 #endif /* hpux || sgi || OREO */
 374 #ifndef WINNT_NATIVE
 375 #include <pwd.h>
 376 #include <grp.h>
 377 #endif /* WINNT_NATIVE */
 378 #ifdef HAVE_SHADOW_H
 379 # include <shadow.h>
 380 #endif /* HAVE_SHADOW_H */
 381 #ifdef HAVE_AUTH_H
 382 # include <auth.h>
 383 #endif /* HAVE_AUTH_H */
 384 #if defined(BSD) && !defined(POSIX)
 385 # include <strings.h>
 386 # define strchr(a, b) index(a, b)
 387 # define strrchr(a, b) rindex(a, b)
 388 #else
 389 # include <string.h>
 390 #endif /* BSD */
 391
 392 /*
 393  * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
 394  * include it yet, so we include it here
 395  */
 396 #if defined(sgi) && SYSVREL > 3
 397 # include <sys/cdefs.h>
 398 #endif /* sgi && SYSVREL > 3 */
 399
 400 #ifdef REMOTEHOST
 401 # ifdef ISC
 402 #  undef MAXHOSTNAMELEN /* Busted headers? */
 403 # endif
 404
 405 # include <netinet/in.h>
 406 # include <arpa/inet.h>
 407 # include <sys/socket.h>
 408 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
 409 #  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
 410 #   if !defined(sgi)
 411 #    if !defined(__CYGWIN__)
 412 #     define INET6
 413 #    endif /* __CYGWIN__ */
 414 #   endif /* sgi */
 415 #  endif /* __APPLE__ */
 416 # endif
 417 # include <sys/uio.h>   /* For struct iovec */
 418 #endif /* REMOTEHOST */
 419
 420 #ifdef PURIFY
 421 /* exit normally, allowing purify to trace leaks */
 422 # define _exit          exit
 423 typedef  int            pret_t;
 424 #else /* !PURIFY */
 425 /*
 426  * If your compiler complains, then you can either
 427  * throw it away and get gcc or, use the following define
 428  * and get rid of the typedef.
 429  * [The 4.2/3BSD vax compiler does not like that]
 430  * Both MULTIFLOW and PCC compilers exhbit this bug.  -- sterling@netcom.com
 431  */
 432 # if (defined(vax) || defined(uts) || defined(MULTIFLOW) || defined(PCC)) && !defined(__GNUC__)
 433 #  define pret_t void
 434 # else /* !((vax || uts || MULTIFLOW || PCC) && !__GNUC__) */
 435 typedef void pret_t;
 436 # endif /* (vax || uts || MULTIFLOW || PCC) && !__GNUC__ */
 437 #endif /* PURIFY */
 438
 439 /*
 440  * ASCII vs. EBCDIC
 441  */
 442 #if 'Z' - 'A' == 25
 443 # ifndef IS_ASCII
 444 #  define IS_ASCII
 445 # endif
 446 #endif
 447
 448 #include "sh.types.h"
 449
 450 #if !HAVE_DECL_GETPGRP
 451 # ifndef GETPGRP_VOID
 452 extern pid_t getpgrp (int);
 453 # else
 454 extern pid_t getpgrp (void);
 455 # endif
 456 #endif
 457
 458 #ifndef lint
 459 typedef ptr_t memalign_t;
 460 #else
 461 typedef union {
 462     char    am_char, *am_char_p;
 463     short   am_short, *am_short_p;
 464     int     am_int, *am_int_p;
 465     long    am_long, *am_long_p;
 466     float   am_float, *am_float_p;
 467     double  am_double, *am_double_p;
 468 }      *memalign_t;
 469
 470 # define malloc         lint_malloc
 471 # define free           lint_free
 472 # define realloc        lint_realloc
 473 # define calloc         lint_calloc
 474 #endif
 475
 476 #ifdef SYSMALLOC
 477 # define xmalloc(i)     smalloc(i)
 478 # define xrealloc(p, i) srealloc(p, i)
 479 # define xcalloc(n, s)  scalloc(n, s)
 480 # define xfree          sfree
 481 #else
 482 # define xmalloc(i)     malloc(i)
 483 # define xrealloc(p, i) realloc(p, i)
 484 # define xcalloc(n, s)  calloc(n, s)
 485 # define xfree          free
 486 #endif /* SYSMALLOC */
 487 #include "sh.char.h"
 488 #include "sh.err.h"
 489 #include "sh.dir.h"
 490 #include "sh.proc.h"
 491
 492 #include "pathnames.h"
 493
 494
 495 /*
 496  * C shell
 497  *
 498  * Bill Joy, UC Berkeley
 499  * October, 1978; May 1980
 500  *
 501  * Jim Kulp, IIASA, Laxenburg Austria
 502  * April, 1980
 503  */
 504
 505 #ifdef HESIOD
 506 # include <hesiod.h>
 507 #endif /* HESIOD */
 508
 509 #ifdef REMOTEHOST
 510 # include <netdb.h>
 511 #endif /* REMOTEHOST */
 512
 513 #ifndef MAXHOSTNAMELEN
 514 # ifdef HOST_NAME_MAX
 515 #  define MAXHOSTNAMELEN (HOST_NAME_MAX + 1)
 516 # elif defined(SCO) && (SYSVREL > 3)
 517 #  include <sys/socket.h>
 518 # else
 519 #  define MAXHOSTNAMELEN 256
 520 # endif
 521 #endif /* MAXHOSTNAMELEN */
 522
 523
 524
 525 #define eq(a, b)        (Strcmp(a, b) == 0)
 526
 527 /* globone() flags */
 528 #define G_ERROR         0       /* default action: error if multiple words */
 529 #define G_IGNORE        1       /* ignore the rest of the words            */
 530 #define G_APPEND        2       /* make a sentence by cat'ing the words    */
 531
 532 /*
 533  * Global flags
 534  */
 535 EXTERN int    chkstop IZERO;    /* Warned of stopped jobs... allow exit */
 536
 537 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
 538 # define CLOSE_ON_EXEC
 539 #else
 540 EXTERN int    didcch IZERO;     /* Have closed unused fd's for child */
 541 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
 542
 543 EXTERN int    didfds IZERO;     /* Have setup i/o fd's for child */
 544 EXTERN int    doneinp IZERO;    /* EOF indicator after reset from readc */
 545 EXTERN int    exiterr IZERO;    /* Exit if error or non-zero exit status */
 546 EXTERN int    child IZERO;      /* Child shell ... errors cause exit */
 547 EXTERN int    haderr IZERO;     /* Reset was because of an error */
 548 EXTERN int    intty IZERO;      /* Input is a tty */
 549 EXTERN int    intact IZERO;     /* We are interactive... therefore prompt */
 550 EXTERN int    justpr IZERO;     /* Just print because of :p hist mod */
 551 EXTERN int    loginsh IZERO;    /* We are a loginsh -> .login/.logout */
 552 EXTERN int    neednote IZERO;   /* Need to pnotify() */
 553 EXTERN int    noexec IZERO;     /* Don't execute, just syntax check */
 554 EXTERN int    pjobs IZERO;      /* want to print jobs if interrupted */
 555 EXTERN int    setintr IZERO;    /* Set interrupts on/off -> Wait intr... */
 556 EXTERN int    havhash IZERO;    /* path hashing is available */
 557 EXTERN int    editing IZERO;    /* doing filename expansion and line editing */
 558 EXTERN int    noediting IZERO;  /* initial $term defaulted to noedit */
 559 EXTERN int    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
 560 EXTERN int    compat_expr IZERO;/* csh-style expressions? */
 561 EXTERN int    isoutatty IZERO;  /* is SHOUT a tty */
 562 EXTERN int    isdiagatty IZERO;/* is SHDIAG a tty */
 563 EXTERN int    is1atty IZERO;    /* is file descriptor 1 a tty (didfds mode) */
 564 EXTERN int    is2atty IZERO;    /* is file descriptor 2 a tty (didfds mode) */
 565 EXTERN int    arun IZERO;       /* Currently running multi-line-aliases */
 566 EXTERN int     implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
 567 EXTERN int    inheredoc IZERO;  /* Currently parsing a heredoc */
 568 /* We received a window change event */
 569 EXTERN volatile sig_atomic_t windowchg IZERO;
 570 #if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
 571 EXTERN int    dspmbyte_ls;
 572 #endif
 573
 574 /*
 575  * Global i/o info
 576  */
 577 EXTERN Char   *arginp IZERO;    /* Argument input for sh -c and internal `xx` */
 578 EXTERN int     onelflg IZERO;   /* 2 -> need line for -t, 1 -> exit on read */
 579 extern Char   *ffile;           /* Name of shell file for $0 */
 580 extern int    dolzero;          /* if $?0 should return true... */
 581
 582 extern char *seterr;            /* Error message from scanner/parser */
 583 #ifndef errno
 584 extern int errno;               /* Error from C library routines */
 585 #endif
 586 extern int exitset;
 587 /* Temp name for << shell files in /tmp, for xfree() */
 588 EXTERN Char   *shtemp IZERO;
 589
 590 #ifdef BSDTIMES
 591 EXTERN struct timeval time0;    /* Time at which the shell started */
 592 EXTERN struct sysrusage ru0;
 593 #else
 594 # ifdef _SEQUENT_
 595 EXTERN timeval_t time0;         /* time at which shell started */
 596 EXTERN struct process_stats ru0;
 597 # else /* _SEQUENT_ */
 598 #  ifndef POSIX
 599 EXTERN time_t  time0;           /* time at which shell started */
 600 #  else /* POSIX */
 601 EXTERN clock_t time0;           /* time at which shell started */
 602 EXTERN clock_t clk_tck;
 603 #  endif /* POSIX */
 604 EXTERN struct tms shtimes;      /* shell and child times for process timing */
 605 # endif /* _SEQUENT_ */
 606 EXTERN time_t seconds0;
 607 #endif /* BSDTIMES */
 608
 609 #ifndef HZ
 610 # define HZ     100             /* for division into seconds */
 611 #endif
 612
 613 /*
 614  * Miscellany
 615  */
 616 EXTERN Char   *doldol;          /* Character pid for $$ */
 617 EXTERN pid_t   backpid;         /* pid of the last background job */
 618
 619 /*
 620  * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
 621  * cause pid's could be unsigned and that would break our -1 flag, and
 622  * uid_t and gid_t are not defined in all the systems so I would have to
 623  * make special cases for them. In the future...
 624  */
 625 EXTERN uid_t   uid, euid;       /* Invokers real and effective */
 626 EXTERN gid_t   gid, egid;       /* User and group ids */
 627 EXTERN pid_t   opgrp,           /* Initial pgrp and tty pgrp */
 628                shpgrp,          /* Pgrp of shell */
 629                tpgrp;           /* Terminal process group */
 630                                 /* If tpgrp is -1, leave tty alone! */
 631
 632 EXTERN Char   *Prompt;          /* The actual printed prompt or NULL */
 633 EXTERN Char   *RPrompt;         /* Right-hand side prompt or NULL */
 634
 635 /*
 636  * To be able to redirect i/o for builtins easily, the shell moves the i/o
 637  * descriptors it uses away from 0,1,2.
 638  * Ideally these should be in units which are closed across exec's
 639  * (this saves work) but for version 6, this is not usually possible.
 640  * The desired initial values for these descriptors are defined in
 641  * sh.local.h.
 642  */
 643 EXTERN int   SHIN IZERO;        /* Current shell input (script) */
 644 EXTERN int   SHOUT IZERO;       /* Shell output */
 645 EXTERN int   SHDIAG IZERO;      /* Diagnostic output... shell errs go here */
 646 EXTERN int   OLDSTD IZERO;      /* Old standard input (def for cmds) */
 647
 648
 649 #if SYSVREL == 4 && defined(_UTS)
 650 /*
 651  * From: fadden@uts.amdahl.com (Andy McFadden)
 652  * we need sigsetjmp for UTS4, but not UTS2.1
 653  */
 654 # define SIGSETJMP
 655 #endif
 656
 657 /*
 658  * Error control
 659  *
 660  * Errors in scanning and parsing set up an error message to be printed
 661  * at the end and complete.  Other errors always cause a reset.
 662  * Because of source commands and .cshrc we need nested error catches.
 663  */
 664
 665 #ifdef SIGSETJMP
 666    typedef struct { sigjmp_buf j; } jmp_buf_t;
 667 # define setexit()  sigsetjmp(reslab.j)
 668 # define _reset()    siglongjmp(reslab.j, 1)
 669 #else
 670    typedef struct { jmp_buf j; } jmp_buf_t;
 671 # define setexit()  setjmp(reslab.j)
 672 # define _reset()    longjmp(reslab.j, 1)
 673 #endif
 674
 675 #define getexit(a) (void) ((a) = reslab)
 676 #define resexit(a) (void) (reslab = (a))
 677
 678 #define cpybin(a, b) (void) ((a) = (b))
 679
 680 extern jmp_buf_t reslab;
 681
 682 EXTERN Char   *gointr;          /* Label for an onintr transfer */
 683
 684 extern struct sigaction parintr;        /* Parents interrupt catch */
 685 extern struct sigaction parterm;        /* Parents terminate catch */
 686
 687 /*
 688  * Lexical definitions.
 689  *
 690  * All lexical space is allocated dynamically.
 691  * The eighth/sixteenth bit of characters is used to prevent recognition,
 692  * and eventually stripped.
 693  */
 694 #define         META            0200
 695 #define         ASCII           0177
 696 #ifdef WIDE_STRINGS             /* Implies SHORT_STRINGS */
 697 /* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
 698 # define        QUOTE           0x40000000
 699 # define        TRIM            0x3FFFFFFF /* Mask to strip quote bit */
 700 # define        UNDER           0x08000000 /* Underline flag */
 701 # define        BOLD            0x04000000 /* Bold flag */
 702 # define        STANDOUT        0x02000000 /* Standout flag */
 703 # define        LITERAL         0x01000000 /* Literal character flag */
 704 # define        ATTRIBUTES      0x0F000000 /* The bits used for attributes */
 705 # define        INVALID_BYTE    0x00800000 /* Invalid character on input */
 706 # ifdef SOLARIS2
 707 #  define       CHAR            0x30FFFFFF /* Mask to mask out the character */
 708 # else
 709 #  define       CHAR            0x00FFFFFF /* Mask to mask out the character */
 710 # endif
 711 #elif defined (SHORT_STRINGS)
 712 # define        QUOTE   ((Char) 0100000)/* 16nth char bit used for 'ing */
 713 # define        TRIM            0073777 /* Mask to strip quote/lit bit */
 714 # define        UNDER           0040000 /* Underline flag */
 715 # define        BOLD            0020000 /* Bold flag */
 716 # define        STANDOUT        0010000 /* Standout flag */
 717 # define        LITERAL         0004000 /* Literal character flag */
 718 # define        ATTRIBUTES      0074000 /* The bits used for attributes */
 719 # define        INVALID_BYTE    0
 720 # define        CHAR            0000377 /* Mask to mask out the character */
 721 #else
 722 # define        QUOTE   ((Char) 0200)   /* Eighth char bit used for 'ing */
 723 # define        TRIM            0177    /* Mask to strip quote bit */
 724 # define        UNDER           0000000 /* No extra bits to do both */
 725 # define        BOLD            0000000 /* Bold flag */
 726 # define        STANDOUT        META    /* Standout flag */
 727 # define        LITERAL         0000000 /* Literal character flag */
 728 # define        ATTRIBUTES      0200    /* The bits used for attributes */
 729 # define        INVALID_BYTE    0
 730 # define        CHAR            0000177 /* Mask to mask out the character */
 731 #endif
 732 #define         CHAR_DBWIDTH    (LITERAL|(LITERAL-1))
 733
 734 EXTERN int     AsciiOnly;       /* If set only 7 bits expected in characters */
 735
 736 /*
 737  * Each level of input has a buffered input structure.
 738  * There are one or more blocks of buffered input for each level,
 739  * exactly one if the input is seekable and tell is available.
 740  * In other cases, the shell buffers enough blocks to keep all loops
 741  * in the buffer.
 742  *
 743  * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but
 744  * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for
 745  * fbuf indexing).
 746  *
 747  * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there
 748  * is no difference between byte and character offsets.
 749  */
 750 EXTERN struct Bin {
 751     off_t   Bfseekp;            /* Seek pointer, generally != lseek() value */
 752     off_t   Bfbobp;             /* Seekp of beginning of buffers */
 753     off_t   Bfeobp;             /* Seekp of end of buffers */
 754     int     Bfblocks;           /* Number of buffer blocks */
 755     Char  **Bfbuf;              /* The array of buffer blocks */
 756 #ifdef WIDE_STRINGS
 757     /* Number of bytes in each character if (cantell) */
 758     unsigned char Bfclens[BUFSIZE + 1];
 759 #endif
 760 }       B;
 761
 762 /*
 763  * This structure allows us to seek inside aliases
 764  */
 765 struct Ain {
 766     int type;
 767 #define TCSH_I_SEEK      0              /* Invalid seek */
 768 #define TCSH_A_SEEK      1              /* Alias seek */
 769 #define TCSH_F_SEEK      2              /* File seek */
 770 #define TCSH_E_SEEK      3              /* Eval seek */
 771     union {
 772         off_t _f_seek;          /* A byte offset if (cantell) */
 773         Char* _c_seek;
 774     } fc;
 775 #define f_seek fc._f_seek
 776 #define c_seek fc._c_seek
 777     Char **a_seek;
 778 } ;
 779
 780 extern int aret;                /* Type of last char returned */
 781 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
 782                       (a)->f_seek == (b)->f_seek && \
 783                       (a)->a_seek == (b)->a_seek)
 784
 785 #define fseekp  B.Bfseekp
 786 #define fbobp   B.Bfbobp
 787 #define feobp   B.Bfeobp
 788 #define fblocks B.Bfblocks
 789 #define fbuf    B.Bfbuf
 790 #define fclens  B.Bfclens
 791
 792 /*
 793  * The shell finds commands in loops by reseeking the input
 794  * For whiles, in particular, it reseeks to the beginning of the
 795  * line the while was on; hence the while placement restrictions.
 796  */
 797 EXTERN struct Ain lineloc;
 798
 799 EXTERN int    cantell;          /* Is current source tellable ? */
 800
 801 /*
 802  * Input lines are parsed into doubly linked circular
 803  * lists of words of the following form.
 804  */
 805 struct wordent {
 806     Char   *word;
 807     struct wordent *prev;
 808     struct wordent *next;
 809 };
 810
 811 /*
 812  * During word building, both in the initial lexical phase and
 813  * when expanding $ variable substitutions, expansion by `!' and `$'
 814  * must be inhibited when reading ahead in routines which are themselves
 815  * processing `!' and `$' expansion or after characters such as `\' or in
 816  * quotations.  The following flags are passed to the getC routines
 817  * telling them which of these substitutions are appropriate for the
 818  * next character to be returned.
 819  */
 820 #define DODOL   1
 821 #define DOEXCL  2
 822 #define DOALL   DODOL|DOEXCL
 823
 824 /*
 825  * Labuf implements a general buffer for lookahead during lexical operations.
 826  * Text which is to be placed in the input stream can be stuck here.
 827  * We stick parsed ahead $ constructs during initial input,
 828  * process id's from `$$', and modified variable values (from qualifiers
 829  * during expansion in sh.dol.c) here.
 830  */
 831 extern struct Strbuf labuf;
 832 EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */
 833
 834 /*
 835  * Parser structure
 836  *
 837  * Each command is parsed to a tree of command structures and
 838  * flags are set bottom up during this process, to be propagated down
 839  * as needed during the semantics/exeuction pass (sh.sem.c).
 840  */
 841 struct command {
 842     unsigned char   t_dtyp;     /* Type of node                  */
 843 #define NODE_COMMAND    1       /* t_dcom <t_dlef >t_drit        */
 844 #define NODE_PAREN      2       /* ( t_dspr ) <t_dlef >t_drit    */
 845 #define NODE_PIPE       3       /* t_dlef | t_drit               */
 846 #define NODE_LIST       4       /* t_dlef ; t_drit               */
 847 #define NODE_OR         5       /* t_dlef || t_drit              */
 848 #define NODE_AND        6       /* t_dlef && t_drit              */
 849     unsigned char   t_nice;     /* Nice value                    */
 850 #ifdef apollo
 851     unsigned char   t_systype;  /* System environment            */
 852 #endif
 853     unsigned long   t_dflg;     /* Flags, e.g. F_AMPERSAND|...   */
 854 /* save these when re-doing      */
 855 #ifndef apollo
 856 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP|F_HUP)
 857 #else
 858 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
 859 #endif
 860 #define F_AMPERSAND     (1<<0)  /* executes in background        */
 861 #define F_APPEND        (1<<1)  /* output is redirected >>       */
 862 #define F_PIPEIN        (1<<2)  /* input is a pipe               */
 863 #define F_PIPEOUT       (1<<3)  /* output is a pipe              */
 864 #define F_NOFORK        (1<<4)  /* don't fork, last ()ized cmd   */
 865 #define F_NOINTERRUPT   (1<<5)  /* should be immune from intr's */
 866 /* spare */
 867 #define F_STDERR        (1<<7)  /* redirect unit 2 with unit 1   */
 868 #define F_OVERWRITE     (1<<8)  /* output was !                  */
 869 #define F_READ          (1<<9)  /* input redirection is <<       */
 870 #define F_REPEAT        (1<<10) /* reexec aft if, repeat,...     */
 871 #define F_NICE          (1<<11) /* t_nice is meaningful          */
 872 #define F_NOHUP         (1<<12) /* nohup this command            */
 873 #define F_TIME          (1<<13) /* time this command             */
 874 #define F_BACKQ         (1<<14) /* command is in ``              */
 875 #define F_HUP           (1<<15) /* hup this command              */
 876 #ifdef apollo
 877 #define F_VER           (1<<16) /* execute command under SYSTYPE */
 878 #endif
 879     union {
 880         Char   *T_dlef;         /* Input redirect word           */
 881         struct command *T_dcar; /* Left part of list/pipe        */
 882     }       L;
 883     union {
 884         Char   *T_drit;         /* Output redirect word          */
 885         struct command *T_dcdr; /* Right part of list/pipe       */
 886     }       R;
 887 #define t_dlef  L.T_dlef
 888 #define t_dcar  L.T_dcar
 889 #define t_drit  R.T_drit
 890 #define t_dcdr  R.T_dcdr
 891     Char  **t_dcom;             /* Command/argument vector       */
 892     struct command *t_dspr;     /* Pointer to ()'d subtree       */
 893 };
 894
 895
 896 /*
 897  * The keywords for the parser
 898  */
 899 #define TC_BREAK        0
 900 #define TC_BRKSW        1
 901 #define TC_CASE         2
 902 #define TC_DEFAULT      3
 903 #define TC_ELSE         4
 904 #define TC_END          5
 905 #define TC_ENDIF        6
 906 #define TC_ENDSW        7
 907 #define TC_EXIT         8
 908 #define TC_FOREACH      9
 909 #define TC_GOTO         10
 910 #define TC_IF           11
 911 #define TC_LABEL        12
 912 #define TC_LET          13
 913 #define TC_SET          14
 914 #define TC_SWITCH       15
 915 #define TC_TEST         16
 916 #define TC_THEN         17
 917 #define TC_WHILE        18
 918
 919 /*
 920  * These are declared here because they want to be
 921  * initialized in sh.init.c (to allow them to be made readonly)
 922  */
 923
 924 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
 925     /* Avoid hpux ansi mode spurious warnings */
 926 typedef void (*bfunc_t) ();
 927 #else
 928 typedef void (*bfunc_t) (Char **, struct command *);
 929 #endif /* hpux && __STDC__ && !__GNUC__ */
 930
 931 extern const struct biltins {
 932     const char   *bname;
 933     bfunc_t bfunct;
 934     int     minargs, maxargs;
 935 } bfunc[];
 936 extern int nbfunc;
 937 #ifdef WINNT_NATIVE
 938 extern struct biltins  nt_bfunc[];
 939 extern int nt_nbfunc;
 940 #endif /* WINNT_NATIVE*/
 941 extern int bequiet;
 942
 943 extern struct srch {
 944     const char *s_name;
 945     int  s_value;
 946 } srchn[];
 947 extern int nsrchn;
 948
 949 /*
 950  * Structure defining the existing while/foreach loops at this
 951  * source level.  Loops are implemented by seeking back in the
 952  * input.  For foreach (fe), the word list is attached here.
 953  */
 954 EXTERN struct whyle {
 955     struct Ain   w_start;       /* Point to restart loop */
 956     struct Ain   w_end;         /* End of loop (0 if unknown) */
 957     Char  **w_fe, **w_fe0;      /* Current/initial wordlist for fe */
 958     Char   *w_fename;           /* Name for fe */
 959     struct whyle *w_next;       /* Next (more outer) loop */
 960 }      *whyles;
 961
 962 /*
 963  * Variable structure
 964  *
 965  * Aliases and variables are stored in AVL balanced binary trees.
 966  */
 967 EXTERN struct varent {
 968     Char  **vec;                /* Array of words which is the value */
 969     Char   *v_name;             /* Name of variable/alias */
 970     int     v_flags;            /* Flags */
 971 #define VAR_ALL         -1
 972 #define VAR_READONLY    1
 973 #define VAR_READWRITE   2
 974 #define VAR_NOGLOB      4
 975 #define VAR_FIRST       32
 976 #define VAR_LAST        64
 977     struct varent *v_link[3];   /* The links, see below */
 978     int     v_bal;              /* Balance factor */
 979 }       shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
 980
 981 #define v_left          v_link[0]
 982 #define v_right         v_link[1]
 983 #define v_parent        v_link[2]
 984
 985 #define adrof(v)        adrof1(v, &shvhed)
 986 #define varval(v)       value1(v, &shvhed)
 987
 988 /*
 989  * The following are for interfacing redo substitution in
 990  * aliases to the lexical routines.
 991  */
 992 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
 993 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
 994 EXTERN Char  **alvec IZERO_STRUCT,
 995               *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
 996
 997 /*
 998  * Filename/command name expansion variables
 999  */
1000
1001 #ifdef __CYGWIN__
1002 # undef MAXPATHLEN
1003 #endif /* __CYGWIN__ */
1004
1005 #ifndef MAXPATHLEN
1006 # ifdef PATH_MAX
1007 #  define MAXPATHLEN PATH_MAX
1008 # else
1009 #  define MAXPATHLEN 2048
1010 # endif
1011 #endif /* MAXPATHLEN */
1012
1013 #ifndef HAVENOLIMIT
1014 /*
1015  * resource limits
1016  */
1017 extern struct limits {
1018     int         limconst;
1019     const char *limname;
1020     int         limdiv;
1021     const char *limscale;
1022 } limits[];
1023 #endif /* !HAVENOLIMIT */
1024
1025 /*
1026  * History list
1027  *
1028  * Each history list entry contains an embedded wordlist
1029  * from the scanner, a number for the event, and a reference count
1030  * to aid in discarding old entries.
1031  *
1032  * Essentially "invisible" entries are put on the history list
1033  * when history substitution includes modifiers, and thrown away
1034  * at the next discarding since their event numbers are very negative.
1035  */
1036 EXTERN struct Hist {
1037     struct wordent Hlex;
1038     int     Hnum;
1039     int     Href;
1040     time_t  Htime;
1041     Char   *histline;
1042     struct Hist *Hnext;
1043 }       Histlist IZERO_STRUCT;
1044
1045 EXTERN struct wordent paraml;   /* Current lexical word list */
1046 EXTERN int     eventno;         /* Next events number */
1047 EXTERN int     lastev;          /* Last event reference (default) */
1048
1049 EXTERN Char    HIST;            /* history invocation character */
1050 EXTERN Char    HISTSUB;         /* auto-substitute character */
1051 EXTERN Char    PRCH;            /* Prompt symbol for regular users */
1052 EXTERN Char    PRCHROOT;        /* Prompt symbol for root */
1053
1054 /*
1055  * For operating systems with single case filenames (OS/2)
1056  */
1057 #ifdef CASE_INSENSITIVE
1058 # ifdef WIDE_STRINGS
1059 #  define samecase(x) (towlower(x))
1060 # else
1061 #  define samecase(x) (isupper((unsigned char)(x)) ? \
1062                        tolower((unsigned char)(x)) : (x))
1063 # endif
1064 #else
1065 # define samecase(x) (x)
1066 #endif /* CASE_INSENSITIVE */
1067
1068 /*
1069  * strings.h:
1070  */
1071 #ifndef SHORT_STRINGS
1072 #define Strchr(a, b)            strchr(a, b)
1073 #define Strrchr(a, b)           strrchr(a, b)
1074 #define Strcat(a, b)            strcat(a, b)
1075 #define Strncat(a, b, c)        strncat(a, b, c)
1076 #define Strcpy(a, b)            strcpy(a, b)
1077 #define Strncpy(a, b, c)        strncpy(a, b, c)
1078 #define Strlen(a)               strlen(a)
1079 #define Strcmp(a, b)            strcmp(a, b)
1080 #define Strncmp(a, b, c)        strncmp(a, b, c)
1081 #define Strcasecmp(a, b)        strcasecmp(a, b)
1082
1083 #define Strspl(a, b)            strspl(a, b)
1084 #define Strnsave(a, b)          strnsave(a, b)
1085 #define Strsave(a)              strsave(a)
1086 #define Strend(a)               strend(a)
1087 #define Strstr(a, b)            strstr(a, b)
1088
1089 #define str2short(a)            (a)
1090 #define blk2short(a)            saveblk(a)
1091 #define short2blk(a)            saveblk(a)
1092 #define short2str(a)            caching_strip(a)
1093 #else
1094 #ifdef WIDE_STRINGS
1095 #define Strchr(a, b)            wcschr(a, b)
1096 #define Strrchr(a, b)           wcsrchr(a, b)
1097 #define Strcat(a, b)            wcscat(a, b)
1098 #define Strncat(a, b, c)        wcsncat(a, b, c)
1099 #define Strcpy(a, b)            wcscpy(a, b)
1100 #define Strncpy(a, b, c)        wcsncpy(a, b, c)
1101 #define Strlen(a)               wcslen(a)
1102 #define Strcmp(a, b)            wcscmp(a, b)
1103 #define Strncmp(a, b, c)        wcsncmp(a, b, c)
1104 #else
1105 #define Strchr(a, b)            s_strchr(a, b)
1106 #define Strrchr(a, b)           s_strrchr(a, b)
1107 #define Strcat(a, b)            s_strcat(a, b)
1108 #define Strncat(a, b, c)        s_strncat(a, b, c)
1109 #define Strcpy(a, b)            s_strcpy(a, b)
1110 #define Strncpy(a, b, c)        s_strncpy(a, b, c)
1111 #define Strlen(a)               s_strlen(a)
1112 #define Strcmp(a, b)            s_strcmp(a, b)
1113 #define Strncmp(a, b, c)        s_strncmp(a, b, c)
1114 #endif
1115 #define Strcasecmp(a, b)        s_strcasecmp(a, b)
1116
1117 #define Strspl(a, b)            s_strspl(a, b)
1118 #define Strnsave(a, b)          s_strnsave(a, b)
1119 #define Strsave(a)              s_strsave(a)
1120 #define Strend(a)               s_strend(a)
1121 #define Strstr(a, b)            s_strstr(a, b)
1122 #endif
1123
1124 /*
1125  * setname is a macro to save space (see sh.err.c)
1126  */
1127 EXTERN const char   *bname;
1128
1129 #define setname(a)      (bname = (a))
1130
1131 #ifdef VFORK
1132 EXTERN Char   *Vsav;
1133 EXTERN Char   *Vdp;
1134 EXTERN Char   *Vexpath;
1135 EXTERN char  **Vt;
1136 #endif /* VFORK */
1137
1138 EXTERN Char  **evalvec;
1139 EXTERN Char   *evalp;
1140
1141 extern struct mesg {
1142     const char   *iname;        /* name from /usr/include */
1143     const char *pname;          /* print name */
1144 } mesg[];
1145
1146 /* word_chars is set by default to WORD_CHARS but can be overridden by
1147    the worchars variable--if unset, reverts to WORD_CHARS */
1148
1149 EXTERN Char   *word_chars;
1150
1151 #define WORD_CHARS "*?_-.[]~="  /* default chars besides alnums in words */
1152
1153 EXTERN Char   *STR_SHELLPATH;
1154
1155 #ifdef _PATH_BSHELL
1156 EXTERN Char   *STR_BSHELL;
1157 #endif
1158 EXTERN Char   *STR_WORD_CHARS;
1159 EXTERN Char  **STR_environ IZERO;
1160
1161 extern int     dont_free;       /* Tell free that we are in danger if we free */
1162
1163 extern Char    *INVPTR;
1164 extern Char    **INVPPTR;
1165
1166 extern char    *progname;
1167 extern int      tcsh;
1168 extern int      xlate_cr;
1169 extern int      output_raw;
1170 extern int      lbuffed;
1171 extern time_t   Htime;
1172 extern int      numeof;
1173 extern int      insource;
1174 extern char     linbuf[];
1175 extern char     *linp;
1176 extern int      nsig;
1177 #ifdef VFORK
1178 extern int      use_fork;
1179 #endif
1180 extern int      tellwhat;
1181 extern int      NoNLSRebind;
1182 #if !HAVE_DECL_ENVIRON
1183 extern char   **environ;
1184 #endif
1185
1186 #include "tc.h"
1187
1188 #ifndef WINNT_NATIVE
1189 # ifdef NLS_CATALOGS
1190 #  if defined(linux) || defined(__GNU__) || defined(__GLIBC__)
1191 #   include <locale.h>
1192 #   ifdef notdef
1193 #    include <localeinfo.h>     /* Has this changed ? */
1194 #   endif
1195 #   include <features.h>
1196 #  endif
1197 #  ifdef SUNOS4
1198    /* Who stole my nl_types.h? :-(
1199     * All this stuff is in the man pages, but nowhere else?
1200     * This does not link right now...
1201     */
1202    typedef void *nl_catd;
1203    extern const char * catgets (nl_catd, int, int, const char *);
1204    nl_catd catopen (const char *, int);
1205    int catclose (nl_catd);
1206 #  else
1207 #   ifdef __uxps__
1208 #    define gettxt gettxt_ds
1209 #   endif
1210 #   include <nl_types.h>
1211 #   ifdef __uxps__
1212 #    undef gettxt
1213 #   endif
1214 #  endif
1215 #  ifndef MCLoadBySet
1216 #   define MCLoadBySet 0
1217 #  endif
1218 EXTERN nl_catd catd;
1219 #  if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
1220 #   define CGETS(b, c, d)       iconv_catgets(catd, b, c, d)
1221 #  else
1222 #   define CGETS(b, c, d)       xcatgets(catd, b, c, d)
1223 #  endif
1224 #  define CSAVS(b, c, d)        strsave(CGETS(b, c, d))
1225 # else
1226 #  define CGETS(b, c, d)        d
1227 #  define CSAVS(b, c, d)        d
1228 # endif
1229 #else /* WINNT_NATIVE */
1230 # define CGETS(b, c, d) nt_cgets( b, c, d)
1231 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1232 #endif /* WINNT_NATIVE */
1233
1234 #if defined(FILEC)
1235 extern int    filec;
1236 #endif /* FILEC */
1237
1238 #include "sh.decls.h"
1239 /*
1240  * Since on some machines characters are unsigned, and the signed
1241  * keyword is not universally implemented, we treat all characters
1242  * as unsigned and sign extend them where we need.
1243  */
1244 #define SIGN_EXTEND_CHAR(a)     (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1245
1246 /*
1247  * explanation for use by the "--help" option
1248  */
1249 #define HELP_STRING "\
1250 -b file         batch mode, read and execute commands from `file' \n\
1251 -c command      run `command' from next argument \n\
1252 -d              load directory stack from `~/.cshdirs' \n\
1253 -Dname[=value]  define environment variable `name' to `value' (DomainOS only) \n\
1254 -e              exit on any error \n\
1255 -f              start faster by ignoring the start-up file \n\
1256 -F              use fork() instead of vfork() when spawning (ConvexOS only) \n\
1257 -i              interactive, even when input is not from a terminal \n\
1258 -l              act as a login shell, must be the only option specified \n\
1259 -m              load the start-up file, whether or not owned by effective user \n\
1260 -n file         no execute mode, just check syntax of the following `file' \n\
1261 -q              accept SIGQUIT for running under a debugger \n\
1262 -s              read commands from standard input \n\
1263 -t              read one line from standard input \n\
1264 -v              echo commands after history substitution \n\
1265 -V              like -v but including commands read from the start-up file \n\
1266 -x              echo commands immediately before execution \n\
1267 -X              like -x but including commands read from the start-up file \n\
1268 --help          print this message and exit \n\
1269 --version       print the version shell variable and exit \n\
1270 \nSee the tcsh(1) manual page for detailed information.\n"
1271
1272 #include "tc.nls.h"
1273
1274 #endif /* _h_sh */