contrib/tcsh-6/sh.err.c

   1 /*
   2  * sh.err.c: Error printing routines.
   3  */
   4 /*-
   5  * Copyright (c) 1980, 1991 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 #define _h_sh_err               /* Don't redefine the errors     */
  33 #include "sh.h"
  34 #include <assert.h>
  35
  36 /*
  37  * C Shell
  38  */
  39
  40 #ifdef lint
  41 #undef va_arg
  42 #define va_arg(a, b) (a ? (b) 0 : (b) 0)
  43 #endif
  44
  45 char   *seterr = NULL;  /* Holds last error if there was one */
  46 extern int enterhist;
  47
  48 #define ERR_FLAGS       0xf0000000
  49 #define ERR_NAME        0x10000000
  50 #define ERR_SILENT      0x20000000
  51 #define ERR_OLD         0x40000000
  52 #define ERR_INTERRUPT   0x80000000
  53
  54 #define ERR_SYNTAX      0
  55 #define ERR_NOTALLOWED  1
  56 #define ERR_WTOOLONG    2
  57 #define ERR_LTOOLONG    3
  58 #define ERR_DOLZERO     4
  59 #define ERR_INCBR       5
  60 #define ERR_EXPORD      6
  61 #define ERR_BADMOD      7
  62 #define ERR_SUBSCRIPT   8
  63 #define ERR_BADNUM      9
  64 #define ERR_NOMORE      10
  65 #define ERR_FILENAME    11
  66 #define ERR_GLOB        12
  67 #define ERR_COMMAND     13
  68 #define ERR_TOOFEW      14
  69 #define ERR_TOOMANY     15
  70 #define ERR_DANGER      16
  71 #define ERR_EMPTYIF     17
  72 #define ERR_IMPRTHEN    18
  73 #define ERR_NOPAREN     19
  74 #define ERR_NOTFOUND    20
  75 #define ERR_MASK        21
  76 #define ERR_LIMIT       22
  77 #define ERR_TOOLARGE    23
  78 #define ERR_SCALEF      24
  79 #define ERR_UNDVAR      25
  80 #define ERR_DEEP        26
  81 #define ERR_BADSIG      27
  82 #define ERR_UNKSIG      28
  83 #define ERR_VARBEGIN    29
  84 #define ERR_VARTOOLONG  30
  85 #define ERR_VARALNUM    31
  86 #define ERR_JOBCONTROL  32
  87 #define ERR_EXPRESSION  33
  88 #define ERR_NOHOMEDIR   34
  89 #define ERR_CANTCHANGE  35
  90 #define ERR_NULLCOM     36
  91 #define ERR_ASSIGN      37
  92 #define ERR_UNKNOWNOP   38
  93 #define ERR_AMBIG       39
  94 #define ERR_EXISTS      40
  95 #define ERR_ARGC        41
  96 #define ERR_INTR        42
  97 #define ERR_RANGE       43
  98 #define ERR_OVERFLOW    44
  99 #define ERR_NOSUCHJOB   45
 100 #define ERR_TERMINAL    46
 101 #define ERR_NOTWHILE    47
 102 #define ERR_NOPROC      48
 103 #define ERR_NOMATCH     49
 104 #define ERR_MISSING     50
 105 #define ERR_UNMATCHED   51
 106 #define ERR_NOMEM       52
 107 #define ERR_PIPE        53
 108 #define ERR_SYSTEM      54
 109 #define ERR_STRING      55
 110 #define ERR_JOBS        56
 111 #define ERR_JOBARGS     57
 112 #define ERR_JOBCUR      58
 113 #define ERR_JOBPREV     59
 114 #define ERR_JOBPAT      60
 115 #define ERR_NESTING     61
 116 #define ERR_JOBCTRLSUB  62
 117 #define ERR_SYNC        63
 118 #define ERR_STOPPED     64
 119 #define ERR_NODIR       65
 120 #define ERR_EMPTY       66
 121 #define ERR_BADDIR      67
 122 #define ERR_DIRUS       68
 123 #define ERR_HFLAG       69
 124 #define ERR_NOTLOGIN    70
 125 #define ERR_DIV0        71
 126 #define ERR_MOD0        72
 127 #define ERR_BADSCALE    73
 128 #define ERR_SUSPLOG     74
 129 #define ERR_UNKUSER     75
 130 #define ERR_NOHOME      76
 131 #define ERR_HISTUS      77
 132 #define ERR_SPDOLLT     78
 133 #define ERR_NEWLINE     79
 134 #define ERR_SPSTAR      80
 135 #define ERR_DIGIT       81
 136 #define ERR_VARILL      82
 137 #define ERR_NLINDEX     83
 138 #define ERR_EXPOVFL     84
 139 #define ERR_VARSYN      85
 140 #define ERR_BADBANG     86
 141 #define ERR_NOSUBST     87
 142 #define ERR_BADSUBST    88
 143 #define ERR_LHS         89
 144 #define ERR_RHSLONG     90
 145 #define ERR_BADBANGMOD  91
 146 #define ERR_MODFAIL     92
 147 #define ERR_SUBOVFL     93
 148 #define ERR_BADBANGARG  94
 149 #define ERR_NOSEARCH    95
 150 #define ERR_NOEVENT     96
 151 #define ERR_TOOMANYRP   97
 152 #define ERR_TOOMANYLP   98
 153 #define ERR_BADPLP      99
 154 #define ERR_MISRED      100
 155 #define ERR_OUTRED      101
 156 #define ERR_REDPAR      102
 157 #define ERR_INRED       103
 158 #define ERR_BADPLPS     104
 159 #define ERR_ALIASLOOP   105
 160 #define ERR_NOWATCH     106
 161 #define ERR_NOSCHED     107
 162 #define ERR_SCHEDUSAGE  108
 163 #define ERR_SCHEDEV     109
 164 #define ERR_SCHEDCOM    110
 165 #define ERR_SCHEDTIME   111
 166 #define ERR_SCHEDREL    112
 167 #define ERR_TCNOSTR     113
 168 #define ERR_SETTCUS     114
 169 #define ERR_TCCAP       115
 170 #define ERR_TCPARM      116
 171 #define ERR_TCARGS      117
 172 #define ERR_TCNARGS     118
 173 #define ERR_TCUSAGE     119
 174 #define ERR_ARCH        120
 175 #define ERR_HISTLOOP    121
 176 #define ERR_FILEINQ     122
 177 #define ERR_SELOVFL     123
 178 #define ERR_TCSHUSAGE   124
 179 #define ERR_COMPCOM     125
 180 #define ERR_COMPINV     126
 181 #define ERR_COMPMIS     127
 182 #define ERR_COMPINC     128
 183 #define ERR_MFLAG       129
 184 #define ERR_ULIMUS      130
 185 #define ERR_READONLY    131
 186 #define ERR_BADJOB      132
 187 #define ERR_INVALID     133
 188 #define ERR_BADCOLORVAR 134
 189 #define ERR_EOF         135
 190 #define NO_ERRORS       136
 191
 192 static const char *elst[NO_ERRORS] INIT_ZERO_STRUCT;
 193
 194 /*
 195  * Init the elst depending on the locale
 196  */
 197 void
 198 errinit(void)
 199 {
 200 #ifdef NLS_CATALOGS
 201     size_t i;
 202
 203     for (i = 0; i < NO_ERRORS; i++)
 204         xfree((char *)(intptr_t)elst[i]);
 205 #  if defined(__DragonFly__) || defined(hpux) || defined(__MidnightBSD__)
 206 #  define NLS_MAXSET 30
 207     for (i = 1; i <= NLS_MAXSET; i++)
 208         CGETS(i, 1, "" );
 209 #  endif
 210 #endif
 211
 212     elst[ERR_SYNTAX] = CSAVS(1, 1, "Syntax Error");
 213     elst[ERR_NOTALLOWED] = CSAVS(1, 2, "%s is not allowed");
 214     elst[ERR_WTOOLONG] = CSAVS(1, 3, "Word too long");
 215     elst[ERR_LTOOLONG] = CSAVS(1, 4, "$< line too long");
 216     elst[ERR_DOLZERO] = CSAVS(1, 5, "No file for $0");
 217     elst[ERR_INCBR] = CSAVS(1, 6, "Incomplete [] modifier");
 218     elst[ERR_EXPORD] = CSAVS(1, 7, "$ expansion must end before ]");
 219     elst[ERR_BADMOD] = CSAVS(1, 8, "Bad : modifier in $ '%c'");
 220     elst[ERR_SUBSCRIPT] = CSAVS(1, 9, "Subscript error");
 221     elst[ERR_BADNUM] = CSAVS(1, 10, "Badly formed number");
 222     elst[ERR_NOMORE] = CSAVS(1, 11, "No more words");
 223     elst[ERR_FILENAME] = CSAVS(1, 12, "Missing file name");
 224     elst[ERR_GLOB] = CSAVS(1, 13, "Internal glob error");
 225     elst[ERR_COMMAND] = CSAVS(1, 14, "Command not found");
 226     elst[ERR_TOOFEW] = CSAVS(1, 15, "Too few arguments");
 227     elst[ERR_TOOMANY] = CSAVS(1, 16, "Too many arguments");
 228     elst[ERR_DANGER] = CSAVS(1, 17, "Too dangerous to alias that");
 229     elst[ERR_EMPTYIF] = CSAVS(1, 18, "Empty if");
 230     elst[ERR_IMPRTHEN] = CSAVS(1, 19, "Improper then");
 231     elst[ERR_NOPAREN] = CSAVS(1, 20, "Words not parenthesized");
 232     elst[ERR_NOTFOUND] = CSAVS(1, 21, "%s not found");
 233     elst[ERR_MASK] = CSAVS(1, 22, "Improper mask");
 234     elst[ERR_LIMIT] = CSAVS(1, 23, "No such limit");
 235     elst[ERR_TOOLARGE] = CSAVS(1, 24, "Argument too large");
 236     elst[ERR_SCALEF] = CSAVS(1, 25, "Improper or unknown scale factor");
 237     elst[ERR_UNDVAR] = CSAVS(1, 26, "Undefined variable");
 238     elst[ERR_DEEP] = CSAVS(1, 27, "Directory stack not that deep");
 239     elst[ERR_BADSIG] = CSAVS(1, 28, "Bad signal number");
 240     elst[ERR_UNKSIG] = CSAVS(1, 29, "Unknown signal; kill -l lists signals");
 241     elst[ERR_VARBEGIN] = CSAVS(1, 30, "Variable name must begin with a letter");
 242     elst[ERR_VARTOOLONG] = CSAVS(1, 31, "Variable name too long");
 243     elst[ERR_VARALNUM] = CSAVS(1, 32,
 244         "Variable name must contain alphanumeric characters");
 245     elst[ERR_JOBCONTROL] = CSAVS(1, 33, "No job control in this shell");
 246     elst[ERR_EXPRESSION] = CSAVS(1, 34, "Expression Syntax");
 247     elst[ERR_NOHOMEDIR] = CSAVS(1, 35, "No home directory");
 248     elst[ERR_CANTCHANGE] = CSAVS(1, 36, "Can't change to home directory");
 249     elst[ERR_NULLCOM] = CSAVS(1, 37, "Invalid null command");
 250     elst[ERR_ASSIGN] = CSAVS(1, 38, "Assignment missing expression");
 251     elst[ERR_UNKNOWNOP] = CSAVS(1, 39, "Unknown operator");
 252     elst[ERR_AMBIG] = CSAVS(1, 40, "Ambiguous");
 253     elst[ERR_EXISTS] = CSAVS(1, 41, "%s: File exists");
 254     elst[ERR_ARGC] = CSAVS(1, 42, "Argument for -c ends in backslash");
 255     elst[ERR_INTR] = CSAVS(1, 43, "Interrupted");
 256     elst[ERR_RANGE] = CSAVS(1, 44, "Subscript out of range");
 257     elst[ERR_OVERFLOW] = CSAVS(1, 45, "Line overflow");
 258     elst[ERR_NOSUCHJOB] = CSAVS(1, 46, "No such job");
 259     elst[ERR_TERMINAL] = CSAVS(1, 47, "Can't from terminal");
 260     elst[ERR_NOTWHILE] = CSAVS(1, 48, "Not in while/foreach");
 261     elst[ERR_NOPROC] = CSAVS(1, 49, "No more processes");
 262     elst[ERR_NOMATCH] = CSAVS(1, 50, "No match");
 263     elst[ERR_MISSING] = CSAVS(1, 51, "Missing '%c'");
 264     elst[ERR_UNMATCHED] = CSAVS(1, 52, "Unmatched '%c'");
 265     elst[ERR_NOMEM] = CSAVS(1, 53, "Out of memory");
 266     elst[ERR_PIPE] = CSAVS(1, 54, "Can't make pipe");
 267     elst[ERR_SYSTEM] = CSAVS(1, 55, "%s: %s");
 268     elst[ERR_STRING] = CSAVS(1, 56, "%s");
 269     elst[ERR_JOBS] = CSAVS(1, 57, "Usage: jobs [ -lZ ]");
 270     elst[ERR_JOBARGS] = CSAVS(1, 58, "Arguments should be jobs or process id's");
 271     elst[ERR_JOBCUR] = CSAVS(1, 59, "No current job");
 272     elst[ERR_JOBPREV] = CSAVS(1, 60, "No previous job");
 273     elst[ERR_JOBPAT] = CSAVS(1, 61, "No job matches pattern");
 274     elst[ERR_NESTING] = CSAVS(1, 62, "Fork nesting > %d; maybe `...` loop");
 275     elst[ERR_JOBCTRLSUB] = CSAVS(1, 63, "No job control in subshells");
 276     elst[ERR_SYNC] = CSAVS(1, 64, "Sync fault: Process %d not found");
 277     elst[ERR_STOPPED] =
 278 #ifdef SUSPENDED
 279         CSAVS(1, 65, "%sThere are suspended jobs");
 280 #else
 281         CSAVS(1, 66, "%sThere are stopped jobs");
 282 #endif /* SUSPENDED */
 283     elst[ERR_NODIR] = CSAVS(1, 67, "No other directory");
 284     elst[ERR_EMPTY] = CSAVS(1, 68, "Directory stack empty");
 285     elst[ERR_BADDIR] = CSAVS(1, 69, "Bad directory");
 286     elst[ERR_DIRUS] = CSAVS(1, 70, "Usage: %s [-%s]%s");
 287     elst[ERR_HFLAG] = CSAVS(1, 71, "No operand for -h flag");
 288     elst[ERR_NOTLOGIN] = CSAVS(1, 72, "Not a login shell");
 289     elst[ERR_DIV0] = CSAVS(1, 73, "Division by 0");
 290     elst[ERR_MOD0] = CSAVS(1, 74, "Mod by 0");
 291     elst[ERR_BADSCALE] = CSAVS(1, 75, "Bad scaling; did you mean \"%s\"?");
 292     elst[ERR_SUSPLOG] = CSAVS(1, 76, "Can't suspend a login shell (yet)");
 293     elst[ERR_UNKUSER] = CSAVS(1, 77, "Unknown user: %s");
 294     elst[ERR_NOHOME] = CSAVS(1, 78, "No $home variable set");
 295     elst[ERR_HISTUS] = CSAVS(1, 79,
 296         "Usage: history [-%s] [# number of events]");
 297     elst[ERR_SPDOLLT] = CSAVS(1, 80, "$, ! or < not allowed with $# or $?");
 298     elst[ERR_NEWLINE] = CSAVS(1, 81, "Newline in variable name");
 299     elst[ERR_SPSTAR] = CSAVS(1, 82, "* not allowed with $# or $?");
 300     elst[ERR_DIGIT] = CSAVS(1, 83, "$?<digit> or $#<digit> not allowed");
 301     elst[ERR_VARILL] = CSAVS(1, 84, "Illegal variable name");
 302     elst[ERR_NLINDEX] = CSAVS(1, 85, "Newline in variable index");
 303     elst[ERR_EXPOVFL] = CSAVS(1, 86, "Expansion buffer overflow");
 304     elst[ERR_VARSYN] = CSAVS(1, 87, "Variable syntax");
 305     elst[ERR_BADBANG] = CSAVS(1, 88, "Bad ! form");
 306     elst[ERR_NOSUBST] = CSAVS(1, 89, "No previous substitute");
 307     elst[ERR_BADSUBST] = CSAVS(1, 90, "Bad substitute");
 308     elst[ERR_LHS] = CSAVS(1, 91, "No previous left hand side");
 309     elst[ERR_RHSLONG] = CSAVS(1, 92, "Right hand side too long");
 310     elst[ERR_BADBANGMOD] = CSAVS(1, 93, "Bad ! modifier: '%c'");
 311     elst[ERR_MODFAIL] = CSAVS(1, 94, "Modifier failed");
 312     elst[ERR_SUBOVFL] = CSAVS(1, 95, "Substitution buffer overflow");
 313     elst[ERR_BADBANGARG] = CSAVS(1, 96, "Bad ! arg selector");
 314     elst[ERR_NOSEARCH] = CSAVS(1, 97, "No prev search");
 315     elst[ERR_NOEVENT] = CSAVS(1, 98, "%s: Event not found");
 316     elst[ERR_TOOMANYRP] = CSAVS(1, 99, "Too many )'s");
 317     elst[ERR_TOOMANYLP] = CSAVS(1, 100, "Too many ('s");
 318     elst[ERR_BADPLP] = CSAVS(1, 101, "Badly placed (");
 319     elst[ERR_MISRED] = CSAVS(1, 102, "Missing name for redirect");
 320     elst[ERR_OUTRED] = CSAVS(1, 103, "Ambiguous output redirect");
 321     elst[ERR_REDPAR] = CSAVS(1, 104, "Can't << within ()'s");
 322     elst[ERR_INRED] = CSAVS(1, 105, "Ambiguous input redirect");
 323     elst[ERR_BADPLPS] = CSAVS(1, 106, "Badly placed ()'s");
 324     elst[ERR_ALIASLOOP] = CSAVS(1, 107, "Alias loop");
 325     elst[ERR_NOWATCH] = CSAVS(1, 108, "No $watch variable set");
 326     elst[ERR_NOSCHED] = CSAVS(1, 109, "No scheduled events");
 327     elst[ERR_SCHEDUSAGE] = CSAVS(1, 110,
 328         "Usage: sched -<item#>.\nUsage: sched [+]hh:mm <command>");
 329     elst[ERR_SCHEDEV] = CSAVS(1, 111, "Not that many scheduled events");
 330     elst[ERR_SCHEDCOM] = CSAVS(1, 112, "No command to run");
 331     elst[ERR_SCHEDTIME] = CSAVS(1, 113, "Invalid time for event");
 332     elst[ERR_SCHEDREL] = CSAVS(1, 114, "Relative time inconsistent with am/pm");
 333     elst[ERR_TCNOSTR] = CSAVS(1, 115, "Out of termcap string space");
 334     elst[ERR_SETTCUS] = CSAVS(1, 116, "Usage: settc %s [yes|no]");
 335     elst[ERR_TCCAP] = CSAVS(1, 117, "Unknown capability `%s'");
 336     elst[ERR_TCPARM] = CSAVS(1, 118, "Unknown termcap parameter '%%%c'");
 337     elst[ERR_TCARGS] = CSAVS(1, 119, "Too many arguments for `%s' (%d)");
 338     elst[ERR_TCNARGS] = CSAVS(1, 120, "`%s' requires %d arguments");
 339     elst[ERR_TCUSAGE] = CSAVS(1, 121,
 340         "Usage: echotc [-v|-s] [<capability> [<args>]]");
 341     elst[ERR_ARCH] = CSAVS(1, 122, "%s: %s. Binary file not executable");
 342     elst[ERR_HISTLOOP] = CSAVS(1, 123, "!# History loop");
 343     elst[ERR_FILEINQ] = CSAVS(1, 124, "Malformed file inquiry");
 344     elst[ERR_SELOVFL] = CSAVS(1, 125, "Selector overflow");
 345 #ifdef apollo
 346     elst[ERR_TCSHUSAGE] = CSAVS(1, 126,
 347 "Unknown option: `-%s'\nUsage: %s [ -bcdefilmnqstvVxX -Dname[=value] ] [ argument ... ]");
 348 #else /* !apollo */
 349 # ifdef convex
 350     elst[ERR_TCSHUSAGE] = CSAVS(1, 127,
 351 "Unknown option: `-%s'\nUsage: %s [ -bcdefFilmnqstvVxX ] [ argument ... ]");
 352 # else /* rest */
 353     elst[ERR_TCSHUSAGE] = CSAVS(1, 128,
 354 "Unknown option: `-%s'\nUsage: %s [ -bcdefilmnqstvVxX ] [ argument ... ]");
 355 # endif /* convex */
 356 #endif /* apollo */
 357     elst[ERR_COMPCOM] = CSAVS(1, 129, "\nInvalid completion: \"%s\"");
 358     elst[ERR_COMPINV] = CSAVS(1, 130, "\nInvalid %s: '%c'");
 359     elst[ERR_COMPMIS] = CSAVS(1, 131,
 360         "\nMissing separator '%c' after %s \"%s\"");
 361     elst[ERR_COMPINC] = CSAVS(1, 132, "\nIncomplete %s: \"%s\"");
 362     elst[ERR_MFLAG] = CSAVS(1, 133, "No operand for -m flag");
 363     elst[ERR_ULIMUS] = CSAVS(1, 134, "Usage: unlimit [-fh] [limits]");
 364     elst[ERR_READONLY] = CSAVS(1, 135, "$%S is read-only");
 365     elst[ERR_BADJOB] = CSAVS(1, 136, "No such job (badjob)");
 366     elst[ERR_BADCOLORVAR] = CSAVS(1, 137, "Unknown colorls variable '%c%c'");
 367     elst[ERR_EOF] = CSAVS(1, 138, "Unexpected end of file");
 368 }
 369
 370 /* Cleanup data. */
 371 struct cleanup_entry
 372 {
 373     void *var;
 374     void (*fn) (void *);
 375 #ifdef CLEANUP_DEBUG
 376     const char *file;
 377     size_t line;
 378 #endif
 379 };
 380
 381 static struct cleanup_entry *cleanup_stack INIT_ZERO; /* = NULL; */
 382 static size_t cleanup_sp INIT_ZERO; /* = 0; Next free entry */
 383 static size_t cleanup_mark INIT_ZERO; /* = 0; Last entry to handle before unwinding */
 384 static size_t cleanup_stack_size INIT_ZERO; /* = 0 */
 385
 386 /* fn() will be run with all signals blocked, so it should not do anything
 387    risky. */
 388 void
 389 cleanup_push_internal(void *var, void (*fn) (void *)
 390 #ifdef CLEANUP_DEBUG
 391     , const char *file, size_t line
 392 #endif
 393 )
 394 {
 395     struct cleanup_entry *ce;
 396
 397     if (cleanup_sp == cleanup_stack_size) {
 398         if (cleanup_stack_size == 0)
 399             cleanup_stack_size = 64; /* Arbitrary */
 400         else
 401             cleanup_stack_size *= 2;
 402         cleanup_stack = xrealloc(cleanup_stack,
 403                                  cleanup_stack_size * sizeof (*cleanup_stack));
 404     }
 405     ce = cleanup_stack + cleanup_sp;
 406     ce->var = var;
 407     ce->fn = fn;
 408 #ifdef CLEANUP_DEBUG
 409     ce->file = file;
 410     ce->line = line;
 411 #endif
 412     cleanup_sp++;
 413 }
 414
 415 static void
 416 cleanup_ignore_fn(void *dummy)
 417 {
 418     USE(dummy);
 419 }
 420
 421 void
 422 cleanup_ignore(void *var)
 423 {
 424     struct cleanup_entry *ce;
 425
 426     ce = cleanup_stack + cleanup_sp;
 427     while (ce != cleanup_stack) {
 428         ce--;
 429         if (ce->var == var) {
 430             ce->fn = cleanup_ignore_fn;
 431             return;
 432         }
 433     }
 434     abort();
 435 }
 436
 437 void
 438 cleanup_until(void *last_var)
 439 {
 440     while (cleanup_sp != 0) {
 441         struct cleanup_entry ce;
 442
 443         cleanup_sp--;
 444         ce = cleanup_stack[cleanup_sp];
 445         ce.fn(ce.var);
 446         if (ce.var == last_var)
 447             return;
 448     }
 449     abort();
 450 }
 451
 452 int
 453 cleanup_reset(void)
 454 {
 455     return cleanup_sp > cleanup_mark;
 456 }
 457
 458 void
 459 cleanup_until_mark(void)
 460 {
 461     while (cleanup_sp > cleanup_mark) {
 462         struct cleanup_entry ce;
 463
 464         cleanup_sp--;
 465         ce = cleanup_stack[cleanup_sp];
 466         ce.fn(ce.var);
 467     }
 468 }
 469
 470 size_t
 471 cleanup_push_mark(void)
 472 {
 473     size_t old_mark;
 474
 475     old_mark = cleanup_mark;
 476     cleanup_mark = cleanup_sp;
 477     return old_mark;
 478 }
 479
 480 void
 481 cleanup_pop_mark(size_t mark)
 482 {
 483     assert (mark <= cleanup_sp);
 484     cleanup_mark = mark;
 485 }
 486
 487 void
 488 sigint_cleanup(void *xsa)
 489 {
 490     const struct sigaction *sa;
 491
 492     sa = xsa;
 493     sigaction(SIGINT, sa, NULL);
 494 }
 495
 496 void
 497 sigprocmask_cleanup(void *xmask)
 498 {
 499     sigset_t *mask;
 500
 501     mask = xmask;
 502     sigprocmask(SIG_SETMASK, mask, NULL);
 503 }
 504
 505 void
 506 open_cleanup(void *xptr)
 507 {
 508     int *ptr;
 509
 510     ptr = xptr;
 511     xclose(*ptr);
 512 }
 513
 514 void
 515 opendir_cleanup(void *xdir)
 516 {
 517     DIR *dir;
 518
 519     dir = xdir;
 520     xclosedir(dir);
 521 }
 522
 523 void
 524 xfree_indirect(void *xptr)
 525 {
 526     void **ptr; /* This is actually type punning :( */
 527
 528     ptr = xptr;
 529     xfree(*ptr);
 530 }
 531
 532 void
 533 reset(void)
 534 {
 535     cleanup_until_mark();
 536     _reset();
 537     abort();
 538 }
 539
 540 /*
 541  * The parser and scanner set up errors for later by calling seterr,
 542  * which sets the variable err as a side effect; later to be tested,
 543  * e.g. in process.
 544  */
 545 void
 546 /*VARARGS1*/
 547 seterror(unsigned int id, ...)
 548 {
 549     if (seterr == 0) {
 550         va_list va;
 551
 552         va_start(va, id);
 553         if (id >= sizeof(elst) / sizeof(elst[0]))
 554             id = ERR_INVALID;
 555         seterr = xvasprintf(elst[id], va);
 556         va_end(va);
 557     }
 558 }
 559
 560 void
 561 fixerror(void)
 562 {
 563     didfds = 0;                 /* Forget about 0,1,2 */
 564     /*
 565      * Go away if -e or we are a child shell
 566      */
 567     if (!exitset || exiterr || child)
 568         xexit(1);
 569
 570     /*
 571      * Reset the state of the input. This buffered seek to end of file will
 572      * also clear the while/foreach stack.
 573      */
 574     btoeof();
 575
 576     setstatus(1);
 577 #ifdef BSDJOBS
 578     if (tpgrp > 0)
 579         (void) tcsetpgrp(FSHTTY, tpgrp);
 580 #endif
 581 }
 582
 583 /*
 584  * Print the error with the given id.
 585  *
 586  * Special ids:
 587  *      ERR_SILENT: Print nothing.
 588  *      ERR_OLD: Print the previously set error
 589  *      ERR_NAME: If this bit is set, print the name of the function
 590  *                in bname
 591  *
 592  * This routine always resets or exits.  The flag haderr
 593  * is set so the routine who catches the unwind can propogate
 594  * it if they want.
 595  *
 596  * Note that any open files at the point of error will eventually
 597  * be closed in the routine process in sh.c which is the only
 598  * place error unwinds are ever caught.
 599  */
 600 void
 601 /*VARARGS*/
 602 stderror(unsigned int id, ...)
 603 {
 604     va_list va;
 605     int flags;
 606
 607     va_start(va, id);
 608
 609     /*
 610      * Reset don't free flag for buggy os's
 611      */
 612     dont_free = 0;
 613
 614     flags = (int) id & ERR_FLAGS;
 615     id &= ~ERR_FLAGS;
 616
 617     /* Pyramid's OS/x has a subtle bug in <varargs.h> which prevents calling
 618      * va_end more than once in the same function. -- sterling@netcom.com
 619      */
 620     assert(!((flags & ERR_OLD) && seterr == NULL));
 621
 622     if (id >= sizeof(elst) / sizeof(elst[0]))
 623         id = ERR_INVALID;
 624
 625     if (!(flags & ERR_SILENT)) {
 626         /*
 627          * Must flush before we print as we wish output before the error
 628          * to go on (some form of) standard output, while output after
 629          * goes on (some form of) diagnostic output. If didfds then output
 630          * will go to 1/2 else to FSHOUT/FSHDIAG. See flush in sh.print.c.
 631          */
 632         flush();/*FIXRESET*/
 633         haderr = 1;             /* Now to diagnostic output */
 634         if (enterhist)
 635             xprintf("Can't load history: ");/*FIXRESET*/
 636         if (flags & ERR_NAME)
 637             xprintf("%s: ", bname);/*FIXRESET*/
 638         if ((flags & ERR_OLD)) {
 639             /* Old error. */
 640             xprintf("%s.\n", seterr);/*FIXRESET*/
 641         } else {
 642             xvprintf(elst[id], va);/*FIXRESET*/
 643             xprintf(".\n");/*FIXRESET*/
 644         }
 645     }
 646     va_end(va);
 647
 648     if (seterr) {
 649         xfree(seterr);
 650         seterr = NULL;
 651     }
 652
 653     fixerror();
 654
 655     reset();            /* Unwind */
 656 }