contrib/tcsh-6/sh.h

   1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.h,v 3.174 2015/05/10 13:29:28 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 #if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET)
  80 #define AUTOSET_KANJI
  81 #endif
  82 /*
  83  * Sanity
  84  */
  85 #if defined(_POSIX_SOURCE) && !defined(POSIX)
  86 # define POSIX
  87 #endif
  88
  89 #if defined(POSIXJOBS) && !defined(BSDJOBS)
  90 # define BSDJOBS
  91 #endif
  92
  93 #define TMP_TEMPLATE ".XXXXXX"
  94
  95 #ifdef SHORT_STRINGS
  96 # ifdef WIDE_STRINGS
  97 #include <wchar.h>
  98 #  ifdef UTF16_STRINGS
  99 typedef wint_t Char;
 100 #  else
 101 typedef wchar_t Char;
 102 #endif
 103 typedef unsigned long uChar;
 104 typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */
 105 #define CHAR_ERR WEOF /* Pretty please, use bit 31... */
 106 #define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N)
 107 #define reset_mbtowc() TCSH_IGNORE(mbtowc(NULL, NULL, 0))
 108 # else
 109 typedef short Char;
 110 typedef unsigned short uChar;
 111 typedef int eChar;
 112 #define CHAR_ERR (-1)
 113 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
 114 #define reset_mbtowc() ((void)0)
 115 # endif
 116 # define SAVE(a) (Strsave(str2short(a)))
 117 #else
 118 typedef char Char;
 119 typedef unsigned char uChar;
 120 typedef int eChar;
 121 #define CHAR_ERR (-1)
 122 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
 123 #define reset_mbtowc() ((void)0)
 124 # define SAVE(a) (strsave(a))
 125 #endif
 126
 127 #if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER)
 128 #define __inline
 129 #endif
 130 #ifdef _MSC_VER
 131 #define TCSH_PTRDIFF_T_FMT "I"
 132 #else
 133 #define TCSH_PTRDIFF_T_FMT "t"
 134 #endif
 135 /* Elide unused argument warnings */
 136 #define USE(a)  (void) (a)
 137 #define TCSH_IGNORE(a)  tcsh_ignore((intptr_t)a)
 138 static __inline void tcsh_ignore(intptr_t a)
 139 {
 140     USE(a);
 141 }
 142
 143 /*
 144  * Return true if the path is absolute
 145  */
 146 #if defined(WINNT_NATIVE)
 147 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 148     (Isalpha((p)[0]) && (p)[1] == ':'))
 149 #elif defined(__CYGWIN__)
 150 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 151     (Isalpha((p)[0]) && (p)[1] == ':' && \
 152      ((p)[2] == '\0' || (p)[2] == '/')))
 153 #else /* !WINNT_NATIVE && !__CYGWIN__ */
 154 # define ABSOLUTEP(p)   (*(p) == '/')
 155 #endif /* WINNT_NATIVE || __CYGWIN__ */
 156
 157 /*
 158  * Fundamental definitions which may vary from system to system.
 159  *
 160  *      BUFSIZE         The i/o buffering size; also limits word size
 161  *      MAILINTVL       How often to mailcheck; more often is more expensive
 162  */
 163 #ifdef BUFSIZE
 164 # if       BUFSIZE < 4096
 165 #  undef   BUFSIZE
 166 #  define  BUFSIZE      4096    /* buffer size should be no less than this */
 167 # endif
 168 #else
 169 # define   BUFSIZE      4096
 170 #endif /* BUFSIZE */
 171
 172 #define FORKSLEEP       10      /* delay loop on non-interactive fork failure */
 173 #define MAILINTVL       600     /* 10 minutes */
 174
 175 #ifndef INBUFSIZE
 176 # define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
 177 #endif /* INBUFSIZE */
 178
 179
 180 /*
 181  * What our builtin echo looks like
 182  */
 183 #define NONE_ECHO       0
 184 #define BSD_ECHO        1
 185 #define SYSV_ECHO       2
 186 #define BOTH_ECHO       (BSD_ECHO|SYSV_ECHO)
 187
 188 #ifndef ECHO_STYLE
 189 # if SYSVREL > 0
 190 #  define ECHO_STYLE SYSV_ECHO
 191 # else /* SYSVREL == 0 */
 192 #  define ECHO_STYLE BSD_ECHO
 193 # endif /* SYSVREL */
 194 #endif /* ECHO_STYLE */
 195
 196 /*
 197  * The shell moves std in/out/diag and the old std input away from units
 198  * 0, 1, and 2 so that it is easy to set up these standards for invoked
 199  * commands.
 200  */
 201 #define FSAFE   5               /* We keep the first 5 descriptors untouched */
 202 #define FSHTTY  15              /* /dev/tty when manip pgrps */
 203 #define FSHIN   16              /* Preferred desc for shell input */
 204 #define FSHOUT  17              /* ... shell output */
 205 #define FSHDIAG 18              /* ... shell diagnostics */
 206 #define FOLDSTD 19              /* ... old std input */
 207
 208 #ifdef PROF
 209 #define xexit(n)        done(n)
 210 #endif
 211
 212 #ifdef cray
 213 # define word word_t           /* sys/types.h defines word.. bad move! */
 214 #endif
 215
 216 #include <sys/types.h>
 217
 218 #ifdef cray
 219 # undef word
 220 #endif
 221
 222 /*
 223  * Path separator in environment variables
 224  */
 225 #ifndef PATHSEP
 226 # if defined(__EMX__) || defined(WINNT_NATIVE)
 227 #  define PATHSEP ';'
 228 # else /* unix */
 229 #  define PATHSEP ':'
 230 # endif /* __EMX__ || WINNT_NATIVE */
 231 #endif /* !PATHSEP */
 232
 233 #if defined(__HP_CXD_SPP) && !defined(__hpux)
 234 # include <sys/cnx_stat.h>
 235 # define stat stat64
 236 # define fstat fstat64
 237 # define lstat lstat64
 238 #endif /* __HP_CXD_SPP && !__hpux */
 239
 240 #ifdef HAVE_LONG_LONG
 241 typedef long long tcsh_number_t;
 242 #else
 243 typedef long tcsh_number_t;
 244 #endif
 245 /*
 246  * This macro compares the st_dev field of struct stat. On aix on ibmESA
 247  * st_dev is a structure, so comparison does not work.
 248  */
 249 #ifndef DEV_DEV_COMPARE
 250 # define DEV_DEV_COMPARE(x,y)   ((x) == (y))
 251 #endif /* DEV_DEV_COMPARE */
 252
 253 #ifdef _SEQUENT_
 254 # include <sys/procstats.h>
 255 #endif /* _SEQUENT_ */
 256 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
 257 # include <sys/times.h>
 258 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
 259
 260 #ifdef NLS
 261 # include <locale.h>
 262 #endif /* NLS */
 263
 264 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
 265 # include <sys/param.h>
 266 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
 267 #include <sys/stat.h>
 268
 269 #if defined(BSDTIMES) || defined(BSDLIMIT)
 270 # include <sys/time.h>
 271 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
 272 #  include "/usr/ucbinclude/sys/resource.h"
 273 # else
 274 #  ifdef convex
 275 #   define sysrusage cvxrusage
 276 #   include <sys/sysinfo.h>
 277 #  else
 278 #   define sysrusage rusage
 279 #   include <sys/resource.h>
 280 #  endif /* convex */
 281 # endif /* SYSVREL>3 */
 282 #endif /* BSDTIMES */
 283
 284 #ifndef WINNT_NATIVE
 285 # ifndef POSIX
 286 #  ifdef TERMIO
 287 #   include <termio.h>
 288 #  else /* SGTTY */
 289 #   include <sgtty.h>
 290 #  endif /* TERMIO */
 291 # else /* POSIX */
 292 #  ifndef _UWIN
 293 #   include <termios.h>
 294 #  else
 295 #   include <termio.h>
 296 #  endif /* _UWIN */
 297 #  if SYSVREL > 3 || defined(__linux__)
 298 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 299 #   undef TIOCSLTC
 300 #   undef CSWTCH
 301 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 302 #  endif /* SYSVREL > 3 */
 303 # endif /* POSIX */
 304 #endif /* WINNT_NATIVE */
 305
 306 #ifdef sonyrisc
 307 # include <sys/ttold.h>
 308 #endif /* sonyrisc */
 309
 310 #if defined(POSIX) && !defined(WINNT_NATIVE)
 311 # include <unistd.h>
 312
 313 /*
 314  * the gcc+protoize version of <stdlib.h>
 315  * redefines malloc(), so we define the following
 316  * to avoid it.
 317  */
 318 # if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX)
 319 #  define NO_FIX_MALLOC
 320 #  include <stdlib.h>
 321 # else /* glibc */
 322 #  define _GNU_STDLIB_H
 323 #  define malloc __malloc
 324 #  define free __free
 325 #  define calloc __calloc
 326 #  define realloc __realloc
 327 #  include <stdlib.h>
 328 #  undef malloc
 329 #  undef free
 330 #  undef calloc
 331 #  undef realloc
 332 # endif /* glibc || sgi */
 333 #endif /* POSIX && !WINNT_NATIVE */
 334 #include <limits.h>
 335
 336 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)
 337 # if !defined(pyr) && !defined(stellar)
 338 #  include <time.h>
 339 #  ifdef _MINIX
 340 #   define HZ CLOCKS_PER_SEC
 341 #  endif /* _MINIX */
 342 # endif /* !pyr && !stellar */
 343 #endif /* SYSVREL > 0 ||  _IBMR2 */
 344
 345 /* In the following ifdef the DECOSF1 has been commented so that later
 346  * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
 347  */
 348 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
 349 # if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
 350 #  include <sys/ioctl.h>
 351 #  if SYSVREL > 3 || defined(__linux__)
 352 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 353 #   undef TIOCSLTC
 354 #   undef CSWTCH
 355 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 356 #  endif /* SYSVREL > 3 */
 357 # endif
 358 #endif
 359
 360 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
 361 #undef CSWTCH
 362 #define CSWTCH _POSIX_VDISABLE
 363 #endif
 364
 365 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
 366 # include <sys/filio.h>
 367 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
 368
 369 #if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
 370 # include <sys/file.h>
 371 #endif  /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
 372
 373 #if !defined(O_RDONLY) || !defined(O_NDELAY)
 374 # include <fcntl.h>
 375 #endif
 376
 377 #include <errno.h>
 378
 379 #include <setjmp.h>
 380
 381 #include <stdarg.h>
 382
 383 #ifdef HAVE_DIRENT_H
 384 # include <dirent.h>
 385 #else
 386 # ifdef HAVE_NDIR_H
 387 #  include <ndir.h>
 388 # else
 389 #  include <sys/dir.h>
 390 # endif
 391 # define dirent direct
 392 #endif /* HAVE_DIRENT_H */
 393 #ifndef HAVE_STRUCT_DIRENT_D_INO
 394 # define d_ino d_fileno
 395 #endif
 396 #if defined(hpux) || defined(sgi) || defined(OREO)
 397 # include <stdio.h>     /* So the fgetpwent() prototypes work */
 398 #endif /* hpux || sgi || OREO */
 399 #ifndef WINNT_NATIVE
 400 #include <pwd.h>
 401 #include <grp.h>
 402 #endif /* WINNT_NATIVE */
 403 #ifdef HAVE_SHADOW_H
 404 # include <shadow.h>
 405 #endif /* HAVE_SHADOW_H */
 406 #ifdef HAVE_AUTH_H
 407 # include <auth.h>
 408 #endif /* HAVE_AUTH_H */
 409 #if defined(BSD) && !defined(POSIX)
 410 # include <strings.h>
 411 # define strchr(a, b) index(a, b)
 412 # define strrchr(a, b) rindex(a, b)
 413 #else
 414 # include <string.h>
 415 #endif /* BSD */
 416
 417 /*
 418  * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
 419  * include it yet, so we include it here
 420  */
 421 #if defined(sgi) && SYSVREL > 3
 422 # include <sys/cdefs.h>
 423 #endif /* sgi && SYSVREL > 3 */
 424
 425 #ifdef REMOTEHOST
 426 # ifdef ISC
 427 #  undef MAXHOSTNAMELEN /* Busted headers? */
 428 # endif
 429
 430 # include <netinet/in.h>
 431 # include <arpa/inet.h>
 432 # include <sys/socket.h>
 433 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
 434 #  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
 435 #   if !defined(sgi)
 436 #    define INET6
 437 #   endif /* sgi */
 438 #  endif /* __APPLE__ */
 439 # endif
 440 # include <sys/uio.h>   /* For struct iovec */
 441 #endif /* REMOTEHOST */
 442
 443 #ifdef PURIFY
 444 /* exit normally, allowing purify to trace leaks */
 445 # define _exit          exit
 446 #endif /* !PURIFY */
 447
 448 /*
 449  * ASCII vs. EBCDIC
 450  */
 451 #if 'Z' - 'A' == 25
 452 # ifndef IS_ASCII
 453 #  define IS_ASCII
 454 # endif
 455 #endif
 456
 457 #include "sh.types.h"
 458
 459 #if !HAVE_DECL_GETPGRP
 460 # ifndef GETPGRP_VOID
 461 extern pid_t getpgrp (int);
 462 # else
 463 extern pid_t getpgrp (void);
 464 # endif
 465 #endif
 466
 467 #ifndef lint
 468 typedef ptr_t memalign_t;
 469 #else
 470 typedef union {
 471     char    am_char, *am_char_p;
 472     short   am_short, *am_short_p;
 473     int     am_int, *am_int_p;
 474     long    am_long, *am_long_p;
 475     float   am_float, *am_float_p;
 476     double  am_double, *am_double_p;
 477 }      *memalign_t;
 478
 479 # define malloc         lint_malloc
 480 # define free           lint_free
 481 # define realloc        lint_realloc
 482 # define calloc         lint_calloc
 483 #endif
 484
 485 #ifdef SYSMALLOC
 486 # define xmalloc(i)     smalloc(i)
 487 # define xrealloc(p, i) srealloc(p, i)
 488 # define xcalloc(n, s)  scalloc(n, s)
 489 # define xfree          sfree
 490 #else
 491 # define xmalloc(i)     malloc(i)
 492 # define xrealloc(p, i) realloc(p, i)
 493 # define xcalloc(n, s)  calloc(n, s)
 494 # define xfree          free
 495 #endif /* SYSMALLOC */
 496 #include "sh.char.h"
 497 #include "sh.err.h"
 498 #include "sh.dir.h"
 499 #include "sh.proc.h"
 500
 501 #include "pathnames.h"
 502
 503
 504 /*
 505  * C shell
 506  *
 507  * Bill Joy, UC Berkeley
 508  * October, 1978; May 1980
 509  *
 510  * Jim Kulp, IIASA, Laxenburg Austria
 511  * April, 1980
 512  */
 513
 514 #ifdef HESIOD
 515 # include <hesiod.h>
 516 #endif /* HESIOD */
 517
 518 #ifdef REMOTEHOST
 519 # include <netdb.h>
 520 #endif /* REMOTEHOST */
 521
 522 #ifndef MAXHOSTNAMELEN
 523 # ifdef HOST_NAME_MAX
 524 #  define MAXHOSTNAMELEN (HOST_NAME_MAX + 1)
 525 # elif defined(SCO) && (SYSVREL > 3)
 526 #  include <sys/socket.h>
 527 # else
 528 #  define MAXHOSTNAMELEN 256
 529 # endif
 530 #endif /* MAXHOSTNAMELEN */
 531
 532
 533
 534 #define eq(a, b)        (Strcmp(a, b) == 0)
 535
 536 /* globone() flags */
 537 #define G_ERROR         0       /* default action: error if multiple words */
 538 #define G_IGNORE        1       /* ignore the rest of the words            */
 539 #define G_APPEND        2       /* make a sentence by cat'ing the words    */
 540
 541 /*
 542  * Global flags
 543  */
 544 EXTERN int    chkstop IZERO;    /* Warned of stopped jobs... allow exit */
 545
 546 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
 547 # define CLOSE_ON_EXEC
 548 #else
 549 EXTERN int    didcch IZERO;     /* Have closed unused fd's for child */
 550 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
 551
 552 EXTERN int    didfds IZERO;     /* Have setup i/o fd's for child */
 553 EXTERN int    doneinp IZERO;    /* EOF indicator after reset from readc */
 554 EXTERN int    exiterr IZERO;    /* Exit if error or non-zero exit status */
 555 EXTERN int    child IZERO;      /* Child shell ... errors cause exit */
 556 EXTERN int    haderr IZERO;     /* Reset was because of an error */
 557 EXTERN int    intty IZERO;      /* Input is a tty */
 558 EXTERN int    intact IZERO;     /* We are interactive... therefore prompt */
 559 EXTERN int    justpr IZERO;     /* Just print because of :p hist mod */
 560 EXTERN int    loginsh IZERO;    /* We are a loginsh -> .login/.logout */
 561 EXTERN int    neednote IZERO;   /* Need to pnotify() */
 562 EXTERN int    noexec IZERO;     /* Don't execute, just syntax check */
 563 EXTERN int    pjobs IZERO;      /* want to print jobs if interrupted */
 564 EXTERN int    setintr IZERO;    /* Set interrupts on/off -> Wait intr... */
 565 EXTERN int    handle_interrupt IZERO;/* Are we currently handling an interrupt? */
 566 EXTERN int    havhash IZERO;    /* path hashing is available */
 567 EXTERN int    editing IZERO;    /* doing filename expansion and line editing */
 568 EXTERN int    noediting IZERO;  /* initial $term defaulted to noedit */
 569 EXTERN int    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
 570 EXTERN int    anyerror IZERO;   /* propagate errors from pipelines/backq */
 571 EXTERN int    compat_expr IZERO;/* csh-style expressions? */
 572 EXTERN int    isoutatty IZERO;  /* is SHOUT a tty */
 573 EXTERN int    isdiagatty IZERO;/* is SHDIAG a tty */
 574 EXTERN int    is1atty IZERO;    /* is file descriptor 1 a tty (didfds mode) */
 575 EXTERN int    is2atty IZERO;    /* is file descriptor 2 a tty (didfds mode) */
 576 EXTERN int    arun IZERO;       /* Currently running multi-line-aliases */
 577 EXTERN int    implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
 578 EXTERN int    cdtohome IZERO;   /* cd without args goes home */
 579 EXTERN int    inheredoc IZERO;  /* Currently parsing a heredoc */
 580 /* We received a window change event */
 581 EXTERN volatile sig_atomic_t windowchg IZERO;
 582 #if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
 583 EXTERN int    dspmbyte_ls;
 584 #endif
 585
 586 /*
 587  * Global i/o info
 588  */
 589 EXTERN Char   *arginp IZERO;    /* Argument input for sh -c and internal `xx` */
 590 EXTERN int     onelflg IZERO;   /* 2 -> need line for -t, 1 -> exit on read */
 591 extern Char   *ffile;           /* Name of shell file for $0 */
 592 extern int    dolzero;          /* if $?0 should return true... */
 593
 594 extern char *seterr;            /* Error message from scanner/parser */
 595 #ifndef errno
 596 extern int errno;               /* Error from C library routines */
 597 #endif
 598 extern int exitset;
 599 /* Temp name for << shell files in /tmp, for xfree() */
 600 EXTERN Char   *shtemp IZERO;
 601
 602 #ifdef BSDTIMES
 603 EXTERN struct timeval time0;    /* Time at which the shell started */
 604 EXTERN struct sysrusage ru0;
 605 #else
 606 # ifdef _SEQUENT_
 607 EXTERN timeval_t time0;         /* time at which shell started */
 608 EXTERN struct process_stats ru0;
 609 # else /* _SEQUENT_ */
 610 #  ifndef POSIX
 611 EXTERN time_t  time0;           /* time at which shell started */
 612 #  else /* POSIX */
 613 EXTERN clock_t time0;           /* time at which shell started */
 614 EXTERN clock_t clk_tck;
 615 #  endif /* POSIX */
 616 EXTERN struct tms shtimes;      /* shell and child times for process timing */
 617 # endif /* _SEQUENT_ */
 618 EXTERN time_t seconds0;
 619 #endif /* BSDTIMES */
 620
 621 #ifndef HZ
 622 # define HZ     100             /* for division into seconds */
 623 #endif
 624
 625 /*
 626  * Miscellany
 627  */
 628 EXTERN Char   *doldol;          /* Character pid for $$ */
 629 EXTERN pid_t   backpid;         /* pid of the last background job */
 630
 631 /*
 632  * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
 633  * cause pid's could be unsigned and that would break our -1 flag, and
 634  * uid_t and gid_t are not defined in all the systems so I would have to
 635  * make special cases for them. In the future...
 636  */
 637 EXTERN uid_t   uid, euid;       /* Invokers real and effective */
 638 EXTERN gid_t   gid, egid;       /* User and group ids */
 639 EXTERN pid_t   opgrp,           /* Initial pgrp and tty pgrp */
 640                shpgrp,          /* Pgrp of shell */
 641                tpgrp;           /* Terminal process group */
 642                                 /* If tpgrp is -1, leave tty alone! */
 643
 644 EXTERN Char   *Prompt;          /* The actual printed prompt or NULL */
 645 EXTERN Char   *RPrompt;         /* Right-hand side prompt or NULL */
 646
 647 /*
 648  * To be able to redirect i/o for builtins easily, the shell moves the i/o
 649  * descriptors it uses away from 0,1,2.
 650  * Ideally these should be in units which are closed across exec's
 651  * (this saves work) but for version 6, this is not usually possible.
 652  * The desired initial values for these descriptors are defined in
 653  * sh.local.h.
 654  */
 655 EXTERN int   SHIN IZERO;        /* Current shell input (script) */
 656 EXTERN int   SHOUT IZERO;       /* Shell output */
 657 EXTERN int   SHDIAG IZERO;      /* Diagnostic output... shell errs go here */
 658 EXTERN int   OLDSTD IZERO;      /* Old standard input (def for cmds) */
 659
 660
 661 #if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__)
 662 /*
 663  * From: fadden@uts.amdahl.com (Andy McFadden)
 664  * we need sigsetjmp for UTS4, but not UTS2.1
 665  */
 666 # define SIGSETJMP
 667 #endif
 668
 669 /*
 670  * Error control
 671  *
 672  * Errors in scanning and parsing set up an error message to be printed
 673  * at the end and complete.  Other errors always cause a reset.
 674  * Because of source commands and .cshrc we need nested error catches.
 675  */
 676
 677 #ifdef SIGSETJMP
 678    typedef struct { sigjmp_buf j; } jmp_buf_t;
 679 # define setexit()  sigsetjmp(reslab.j, 1)
 680 # define _reset()    siglongjmp(reslab.j, 1)
 681 #else
 682    typedef struct { jmp_buf j; } jmp_buf_t;
 683 # define setexit()  setjmp(reslab.j)
 684 # define _reset()    longjmp(reslab.j, 1)
 685 #endif
 686
 687 #define getexit(a) (void) ((a) = reslab)
 688 #define resexit(a) (void) (reslab = (a))
 689
 690 #define cpybin(a, b) (void) ((a) = (b))
 691
 692 extern jmp_buf_t reslab;
 693
 694 EXTERN Char   *gointr;          /* Label for an onintr transfer */
 695
 696 extern struct sigaction parintr;        /* Parents interrupt catch */
 697 extern struct sigaction parterm;        /* Parents terminate catch */
 698
 699 /*
 700  * Lexical definitions.
 701  *
 702  * All lexical space is allocated dynamically.
 703  * The eighth/sixteenth bit of characters is used to prevent recognition,
 704  * and eventually stripped.
 705  */
 706 #define         META            0200
 707 #define         ASCII           0177
 708 #ifdef WIDE_STRINGS             /* Implies SHORT_STRINGS */
 709 /* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
 710 # define        QUOTE           0x40000000
 711 # define        TRIM            0x3FFFFFFF /* Mask to strip quote bit */
 712 # define        UNDER           0x08000000 /* Underline flag */
 713 # define        BOLD            0x04000000 /* Bold flag */
 714 # define        STANDOUT        0x02000000 /* Standout flag */
 715 # define        LITERAL         0x01000000 /* Literal character flag */
 716 # define        ATTRIBUTES      0x0F000000 /* The bits used for attributes */
 717 # define        INVALID_BYTE    0x00800000 /* Invalid character on input */
 718 # ifdef SOLARIS2
 719 #  define       CHAR            0x30FFFFFF /* Mask to mask out the character */
 720 # else
 721 #  define       CHAR            0x00FFFFFF /* Mask to mask out the character */
 722 # endif
 723 #elif defined (SHORT_STRINGS)
 724 # define        QUOTE   ((Char) 0100000)/* 16nth char bit used for 'ing */
 725 # define        TRIM            0073777 /* Mask to strip quote/lit bit */
 726 # define        UNDER           0040000 /* Underline flag */
 727 # define        BOLD            0020000 /* Bold flag */
 728 # define        STANDOUT        0010000 /* Standout flag */
 729 # define        LITERAL         0004000 /* Literal character flag */
 730 # define        ATTRIBUTES      0074000 /* The bits used for attributes */
 731 # define        INVALID_BYTE    0
 732 # define        CHAR            0000377 /* Mask to mask out the character */
 733 #else
 734 # define        QUOTE   ((Char) 0200)   /* Eighth char bit used for 'ing */
 735 # define        TRIM            0177    /* Mask to strip quote bit */
 736 # define        UNDER           0000000 /* No extra bits to do both */
 737 # define        BOLD            0000000 /* Bold flag */
 738 # define        STANDOUT        META    /* Standout flag */
 739 # define        LITERAL         0000000 /* Literal character flag */
 740 # define        ATTRIBUTES      0200    /* The bits used for attributes */
 741 # define        INVALID_BYTE    0
 742 # define        CHAR            0000177 /* Mask to mask out the character */
 743 #endif
 744 #define         CHAR_DBWIDTH    (LITERAL|(LITERAL-1))
 745
 746 EXTERN int     AsciiOnly;       /* If set only 7 bits expected in characters */
 747
 748 /*
 749  * Each level of input has a buffered input structure.
 750  * There are one or more blocks of buffered input for each level,
 751  * exactly one if the input is seekable and tell is available.
 752  * In other cases, the shell buffers enough blocks to keep all loops
 753  * in the buffer.
 754  *
 755  * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but
 756  * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for
 757  * fbuf indexing).
 758  *
 759  * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there
 760  * is no difference between byte and character offsets.
 761  */
 762 EXTERN struct Bin {
 763     off_t   Bfseekp;            /* Seek pointer, generally != lseek() value */
 764     off_t   Bfbobp;             /* Seekp of beginning of buffers */
 765     off_t   Bfeobp;             /* Seekp of end of buffers */
 766     int     Bfblocks;           /* Number of buffer blocks */
 767     Char  **Bfbuf;              /* The array of buffer blocks */
 768 #ifdef WIDE_STRINGS
 769     /* Number of bytes in each character if (cantell) */
 770     unsigned char Bfclens[BUFSIZE + 1];
 771 #endif
 772 }       B;
 773
 774 /*
 775  * This structure allows us to seek inside aliases
 776  */
 777 struct Ain {
 778     int type;
 779 #define TCSH_I_SEEK      0              /* Invalid seek */
 780 #define TCSH_A_SEEK      1              /* Alias seek */
 781 #define TCSH_F_SEEK      2              /* File seek */
 782 #define TCSH_E_SEEK      3              /* Eval seek */
 783     union {
 784         off_t _f_seek;          /* A byte offset if (cantell) */
 785         Char* _c_seek;
 786     } fc;
 787 #define f_seek fc._f_seek
 788 #define c_seek fc._c_seek
 789     Char **a_seek;
 790 } ;
 791
 792 extern int aret;                /* Type of last char returned */
 793 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
 794                       (a)->f_seek == (b)->f_seek && \
 795                       (a)->a_seek == (b)->a_seek)
 796
 797 #define fseekp  B.Bfseekp
 798 #define fbobp   B.Bfbobp
 799 #define feobp   B.Bfeobp
 800 #define fblocks B.Bfblocks
 801 #define fbuf    B.Bfbuf
 802 #define fclens  B.Bfclens
 803
 804 /*
 805  * The shell finds commands in loops by reseeking the input
 806  * For whiles, in particular, it reseeks to the beginning of the
 807  * line the while was on; hence the while placement restrictions.
 808  */
 809 EXTERN struct Ain lineloc;
 810
 811 EXTERN int    cantell;          /* Is current source tellable ? */
 812
 813 /*
 814  * Input lines are parsed into doubly linked circular
 815  * lists of words of the following form.
 816  */
 817 struct wordent {
 818     Char   *word;
 819     struct wordent *prev;
 820     struct wordent *next;
 821 };
 822
 823 /*
 824  * During word building, both in the initial lexical phase and
 825  * when expanding $ variable substitutions, expansion by `!' and `$'
 826  * must be inhibited when reading ahead in routines which are themselves
 827  * processing `!' and `$' expansion or after characters such as `\' or in
 828  * quotations.  The following flags are passed to the getC routines
 829  * telling them which of these substitutions are appropriate for the
 830  * next character to be returned.
 831  */
 832 #define DODOL   1
 833 #define DOEXCL  2
 834 #define DOALL   DODOL|DOEXCL
 835
 836 /*
 837  * Labuf implements a general buffer for lookahead during lexical operations.
 838  * Text which is to be placed in the input stream can be stuck here.
 839  * We stick parsed ahead $ constructs during initial input,
 840  * process id's from `$$', and modified variable values (from qualifiers
 841  * during expansion in sh.dol.c) here.
 842  */
 843 extern struct Strbuf labuf;
 844 EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */
 845
 846 /*
 847  * Parser structure
 848  *
 849  * Each command is parsed to a tree of command structures and
 850  * flags are set bottom up during this process, to be propagated down
 851  * as needed during the semantics/exeuction pass (sh.sem.c).
 852  */
 853 struct command {
 854     unsigned char   t_dtyp;     /* Type of node                  */
 855 #define NODE_COMMAND    1       /* t_dcom <t_dlef >t_drit        */
 856 #define NODE_PAREN      2       /* ( t_dspr ) <t_dlef >t_drit    */
 857 #define NODE_PIPE       3       /* t_dlef | t_drit               */
 858 #define NODE_LIST       4       /* t_dlef ; t_drit               */
 859 #define NODE_OR         5       /* t_dlef || t_drit              */
 860 #define NODE_AND        6       /* t_dlef && t_drit              */
 861     unsigned char   t_nice;     /* Nice value                    */
 862 #ifdef apollo
 863     unsigned char   t_systype;  /* System environment            */
 864 #endif
 865     unsigned long   t_dflg;     /* Flags, e.g. F_AMPERSAND|...   */
 866 /* save these when re-doing      */
 867 #ifndef apollo
 868 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP|F_HUP)
 869 #else
 870 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
 871 #endif
 872 #define F_AMPERSAND     (1<<0)  /* executes in background        */
 873 #define F_APPEND        (1<<1)  /* output is redirected >>       */
 874 #define F_PIPEIN        (1<<2)  /* input is a pipe               */
 875 #define F_PIPEOUT       (1<<3)  /* output is a pipe              */
 876 #define F_NOFORK        (1<<4)  /* don't fork, last ()ized cmd   */
 877 #define F_NOINTERRUPT   (1<<5)  /* should be immune from intr's */
 878 /* spare */
 879 #define F_STDERR        (1<<7)  /* redirect unit 2 with unit 1   */
 880 #define F_OVERWRITE     (1<<8)  /* output was !                  */
 881 #define F_READ          (1<<9)  /* input redirection is <<       */
 882 #define F_REPEAT        (1<<10) /* reexec aft if, repeat,...     */
 883 #define F_NICE          (1<<11) /* t_nice is meaningful          */
 884 #define F_NOHUP         (1<<12) /* nohup this command            */
 885 #define F_TIME          (1<<13) /* time this command             */
 886 #define F_BACKQ         (1<<14) /* command is in ``              */
 887 #define F_HUP           (1<<15) /* hup this command              */
 888 #ifdef apollo
 889 #define F_VER           (1<<16) /* execute command under SYSTYPE */
 890 #endif
 891     union {
 892         Char   *T_dlef;         /* Input redirect word           */
 893         struct command *T_dcar; /* Left part of list/pipe        */
 894     }       L;
 895     union {
 896         Char   *T_drit;         /* Output redirect word          */
 897         struct command *T_dcdr; /* Right part of list/pipe       */
 898     }       R;
 899 #define t_dlef  L.T_dlef
 900 #define t_dcar  L.T_dcar
 901 #define t_drit  R.T_drit
 902 #define t_dcdr  R.T_dcdr
 903     Char  **t_dcom;             /* Command/argument vector       */
 904     struct command *t_dspr;     /* Pointer to ()'d subtree       */
 905 };
 906
 907
 908 /*
 909  * The keywords for the parser
 910  */
 911 #define TC_BREAK        0
 912 #define TC_BRKSW        1
 913 #define TC_CASE         2
 914 #define TC_DEFAULT      3
 915 #define TC_ELSE         4
 916 #define TC_END          5
 917 #define TC_ENDIF        6
 918 #define TC_ENDSW        7
 919 #define TC_EXIT         8
 920 #define TC_FOREACH      9
 921 #define TC_GOTO         10
 922 #define TC_IF           11
 923 #define TC_LABEL        12
 924 #define TC_LET          13
 925 #define TC_SET          14
 926 #define TC_SWITCH       15
 927 #define TC_TEST         16
 928 #define TC_THEN         17
 929 #define TC_WHILE        18
 930
 931 /*
 932  * These are declared here because they want to be
 933  * initialized in sh.init.c (to allow them to be made readonly)
 934  */
 935
 936 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
 937     /* Avoid hpux ansi mode spurious warnings */
 938 typedef void (*bfunc_t) ();
 939 #else
 940 typedef void (*bfunc_t) (Char **, struct command *);
 941 #endif /* hpux && __STDC__ && !__GNUC__ */
 942
 943 extern const struct biltins {
 944     const char   *bname;
 945     bfunc_t bfunct;
 946     int     minargs, maxargs;
 947 } bfunc[];
 948 extern int nbfunc;
 949 #ifdef WINNT_NATIVE
 950 extern struct biltins  nt_bfunc[];
 951 extern int nt_nbfunc;
 952 #endif /* WINNT_NATIVE*/
 953 extern int bequiet;
 954
 955 extern struct srch {
 956     const char *s_name;
 957     int  s_value;
 958 } srchn[];
 959 extern int nsrchn;
 960
 961 /*
 962  * Structure defining the existing while/foreach loops at this
 963  * source level.  Loops are implemented by seeking back in the
 964  * input.  For foreach (fe), the word list is attached here.
 965  */
 966 EXTERN struct whyle {
 967     struct Ain   w_start;       /* Point to restart loop */
 968     struct Ain   w_end;         /* End of loop (0 if unknown) */
 969     Char  **w_fe, **w_fe0;      /* Current/initial wordlist for fe */
 970     Char   *w_fename;           /* Name for fe */
 971     struct whyle *w_next;       /* Next (more outer) loop */
 972 }      *whyles;
 973
 974 /*
 975  * Variable structure
 976  *
 977  * Aliases and variables are stored in AVL balanced binary trees.
 978  */
 979 EXTERN struct varent {
 980     Char  **vec;                /* Array of words which is the value */
 981     Char   *v_name;             /* Name of variable/alias */
 982     int     v_flags;            /* Flags */
 983 #define VAR_ALL         -1
 984 #define VAR_READONLY    1
 985 #define VAR_READWRITE   2
 986 #define VAR_NOGLOB      4
 987 #define VAR_FIRST       32
 988 #define VAR_LAST        64
 989     struct varent *v_link[3];   /* The links, see below */
 990     int     v_bal;              /* Balance factor */
 991 }       shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
 992
 993 #define v_left          v_link[0]
 994 #define v_right         v_link[1]
 995 #define v_parent        v_link[2]
 996
 997 #define adrof(v)        adrof1(v, &shvhed)
 998 #define varval(v)       value1(v, &shvhed)
 999
1000 /*
1001  * The following are for interfacing redo substitution in
1002  * aliases to the lexical routines.
1003  */
1004 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
1005 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
1006 EXTERN Char  **alvec IZERO_STRUCT,
1007               *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
1008
1009 /*
1010  * Filename/command name expansion variables
1011  */
1012
1013 #ifndef MAXPATHLEN
1014 # ifdef PATH_MAX
1015 #  define MAXPATHLEN PATH_MAX
1016 # else
1017 #  define MAXPATHLEN 2048
1018 # endif
1019 #endif /* MAXPATHLEN */
1020
1021 #ifndef HAVENOLIMIT
1022 /*
1023  * resource limits
1024  */
1025 extern struct limits {
1026     int         limconst;
1027     const char *limname;
1028     int         limdiv;
1029     const char *limscale;
1030 } limits[];
1031 #endif /* !HAVENOLIMIT */
1032
1033 /*
1034  * History list
1035  *
1036  * Each history list entry contains an embedded wordlist
1037  * from the scanner, a number for the event, and a reference count
1038  * to aid in discarding old entries.
1039  *
1040  * Essentially "invisible" entries are put on the history list
1041  * when history substitution includes modifiers, and thrown away
1042  * at the next discarding since their event numbers are very negative.
1043  */
1044 EXTERN struct Hist {
1045     struct wordent Hlex;
1046     int     Hnum;                /* eventno when inserted into history list  */
1047     int     Href;
1048     time_t  Htime;
1049     Char   *histline;
1050     struct Hist *Hnext, *Hprev;         /* doubly linked list */
1051     unsigned Hhash;                     /* hash value of command line */
1052 }       Histlist IZERO_STRUCT;
1053
1054 extern struct wordent paraml;   /* Current lexical word list */
1055 EXTERN int     eventno;         /* Next events number */
1056 EXTERN int     lastev;          /* Last event reference (default) */
1057
1058 EXTERN Char    HIST;            /* history invocation character */
1059 EXTERN Char    HISTSUB;         /* auto-substitute character */
1060 EXTERN Char    PRCH;            /* Prompt symbol for regular users */
1061 EXTERN Char    PRCHROOT;        /* Prompt symbol for root */
1062
1063 /*
1064  * For operating systems with single case filenames (OS/2)
1065  */
1066 #ifdef CASE_INSENSITIVE
1067 # ifdef WIDE_STRINGS
1068 #  define samecase(x) (towlower(x))
1069 # else
1070 #  define samecase(x) (isupper((unsigned char)(x)) ? \
1071                        tolower((unsigned char)(x)) : (x))
1072 # endif
1073 #else
1074 # define samecase(x) (x)
1075 #endif /* CASE_INSENSITIVE */
1076
1077 /*
1078  * strings.h:
1079  */
1080 #ifndef SHORT_STRINGS
1081 #define Strchr(a, b)            strchr(a, b)
1082 #define Strrchr(a, b)           strrchr(a, b)
1083 #define Strcat(a, b)            strcat(a, b)
1084 #define Strncat(a, b, c)        strncat(a, b, c)
1085 #define Strcpy(a, b)            strcpy(a, b)
1086 #define Strncpy(a, b, c)        strncpy(a, b, c)
1087 #define Strlen(a)               strlen(a)
1088 #define Strcmp(a, b)            strcmp(a, b)
1089 #define Strncmp(a, b, c)        strncmp(a, b, c)
1090 #define Strcasecmp(a, b)        strcasecmp(a, b)
1091
1092 #define Strspl(a, b)            strspl(a, b)
1093 #define Strnsave(a, b)          strnsave(a, b)
1094 #define Strsave(a)              strsave(a)
1095 #define Strend(a)               strend(a)
1096 #define Strstr(a, b)            strstr(a, b)
1097
1098 #define str2short(a)            (a)
1099 #define blk2short(a)            saveblk(a)
1100 #define short2blk(a)            saveblk(a)
1101 #define short2str(a)            caching_strip(a)
1102 #else
1103 #if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS)
1104 #define Strchr(a, b)            wcschr(a, b)
1105 #define Strrchr(a, b)           wcsrchr(a, b)
1106 #define Strcat(a, b)            wcscat(a, b)
1107 #define Strncat(a, b, c)        wcsncat(a, b, c)
1108 #define Strcpy(a, b)            wcscpy(a, b)
1109 #define Strncpy(a, b, c)        wcsncpy(a, b, c)
1110 #define Strlen(a)               wcslen(a)
1111 #define Strcmp(a, b)            wcscmp(a, b)
1112 #define Strncmp(a, b, c)        wcsncmp(a, b, c)
1113 #else
1114 #define Strchr(a, b)            s_strchr(a, b)
1115 #define Strrchr(a, b)           s_strrchr(a, b)
1116 #define Strcat(a, b)            s_strcat(a, b)
1117 #define Strncat(a, b, c)        s_strncat(a, b, c)
1118 #define Strcpy(a, b)            s_strcpy(a, b)
1119 #define Strncpy(a, b, c)        s_strncpy(a, b, c)
1120 #define Strlen(a)               s_strlen(a)
1121 #define Strcmp(a, b)            s_strcmp(a, b)
1122 #define Strncmp(a, b, c)        s_strncmp(a, b, c)
1123 #endif
1124 #define Strcasecmp(a, b)        s_strcasecmp(a, b)
1125
1126 #define Strspl(a, b)            s_strspl(a, b)
1127 #define Strnsave(a, b)          s_strnsave(a, b)
1128 #define Strsave(a)              s_strsave(a)
1129 #define Strend(a)               s_strend(a)
1130 #define Strstr(a, b)            s_strstr(a, b)
1131 #endif
1132
1133 /*
1134  * setname is a macro to save space (see sh.err.c)
1135  */
1136 EXTERN const char   *bname;
1137
1138 #define setname(a)      (bname = (a))
1139
1140 #ifdef VFORK
1141 EXTERN Char   *Vsav;
1142 EXTERN Char   *Vdp;
1143 EXTERN Char   *Vexpath;
1144 EXTERN char  **Vt;
1145 #endif /* VFORK */
1146
1147 EXTERN Char  **evalvec;
1148 EXTERN Char   *evalp;
1149
1150 extern struct mesg {
1151     const char   *iname;        /* name from /usr/include */
1152     const char *pname;          /* print name */
1153 } mesg[];
1154
1155 /* word_chars is set by default to WORD_CHARS but can be overridden by
1156    the worchars variable--if unset, reverts to WORD_CHARS */
1157
1158 EXTERN Char   *word_chars;
1159
1160 #define WORD_CHARS "*?_-.[]~="  /* default chars besides alnums in words */
1161
1162 EXTERN Char   *STR_SHELLPATH;
1163
1164 #ifdef _PATH_BSHELL
1165 EXTERN Char   *STR_BSHELL;
1166 #endif
1167 EXTERN Char   *STR_WORD_CHARS;
1168 EXTERN Char  **STR_environ IZERO;
1169
1170 extern int     dont_free;       /* Tell free that we are in danger if we free */
1171
1172 extern Char    *INVPTR;
1173 extern Char    **INVPPTR;
1174
1175 extern char    *progname;
1176 extern int      tcsh;
1177 extern int      xlate_cr;
1178 extern int      output_raw;
1179 extern int      lbuffed;
1180 extern time_t   Htime;
1181 extern int      numeof;
1182 extern int      insource;
1183 extern char     linbuf[];
1184 extern char     *linp;
1185 extern int      nsig;
1186 #ifdef VFORK
1187 extern int      use_fork;
1188 #endif
1189 extern int      tellwhat;
1190 extern int      NoNLSRebind;
1191 #if !HAVE_DECL_ENVIRON
1192 extern char   **environ;
1193 #endif
1194
1195 #include "tc.h"
1196
1197 #ifndef WINNT_NATIVE
1198 # ifdef NLS_CATALOGS
1199 #  ifdef HAVE_FEATURES_H
1200 #   include <features.h>
1201 #  endif
1202 #  ifdef HAVE_NL_LANGINFO
1203 #   include <langinfo.h>
1204 #  endif
1205 #  ifdef __uxps__
1206 #   define gettxt gettxt_ds
1207 #  endif
1208 #  include <nl_types.h>
1209 #  ifdef __uxps__
1210 #   undef gettxt
1211 #  endif
1212 EXTERN nl_catd catd;
1213 #  if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
1214 #   define CGETS(b, c, d)       iconv_catgets(catd, b, c, d)
1215 #  else
1216 #   define CGETS(b, c, d)       xcatgets(catd, b, c, d)
1217 #  endif
1218 #  define CSAVS(b, c, d)        strsave(CGETS(b, c, d))
1219 # else
1220 #  define CGETS(b, c, d)        d
1221 #  define CSAVS(b, c, d)        d
1222 # endif
1223 #else /* WINNT_NATIVE */
1224 # define CGETS(b, c, d) nt_cgets( b, c, d)
1225 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1226 #endif /* WINNT_NATIVE */
1227
1228 #if defined(FILEC)
1229 extern int    filec;
1230 #endif /* FILEC */
1231
1232 #include "sh.decls.h"
1233 /*
1234  * Since on some machines characters are unsigned, and the signed
1235  * keyword is not universally implemented, we treat all characters
1236  * as unsigned and sign extend them where we need.
1237  */
1238 #define SIGN_EXTEND_CHAR(a)     (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1239
1240 /*
1241  * explanation for use by the "--help" option
1242  */
1243 #define HELP_STRING "\
1244 -b file         batch mode, read and execute commands from `file' \n\
1245 -c command      run `command' from next argument \n\
1246 -d              load directory stack from `~/.cshdirs' \n\
1247 -Dname[=value]  define environment variable `name' to `value' (DomainOS only) \n\
1248 -e              exit on any error \n\
1249 -f              start faster by ignoring the start-up file \n\
1250 -F              use fork() instead of vfork() when spawning (ConvexOS only) \n\
1251 -i              interactive, even when input is not from a terminal \n\
1252 -l              act as a login shell, must be the only option specified \n\
1253 -m              load the start-up file, whether or not owned by effective user \n\
1254 -n file         no execute mode, just check syntax of the following `file' \n\
1255 -q              accept SIGQUIT for running under a debugger \n\
1256 -s              read commands from standard input \n\
1257 -t              read one line from standard input \n\
1258 -v              echo commands after history substitution \n\
1259 -V              like -v but including commands read from the start-up file \n\
1260 -x              echo commands immediately before execution \n\
1261 -X              like -x but including commands read from the start-up file \n\
1262 --help          print this message and exit \n\
1263 --version       print the version shell variable and exit \n\
1264 \nSee the tcsh(1) manual page for detailed information.\n"
1265
1266 #include "tc.nls.h"
1267
1268 #endif /* _h_sh */