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
errinit(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(__FreeBSD__) || 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 [ -l ]");
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
cleanup_push_internal(void * var,void (* fn)(void *),const char * file,size_t line)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
cleanup_ignore_fn(void * dummy)416 cleanup_ignore_fn(void *dummy)
417 {
418 USE(dummy);
419 }
420
421 void
cleanup_ignore(void * var)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
cleanup_until(void * last_var)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
cleanup_reset(void)453 cleanup_reset(void)
454 {
455 return cleanup_sp > cleanup_mark;
456 }
457
458 void
cleanup_until_mark(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
cleanup_push_mark(void)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
cleanup_pop_mark(size_t mark)481 cleanup_pop_mark(size_t mark)
482 {
483 assert (mark <= cleanup_sp);
484 cleanup_mark = mark;
485 }
486
487 void
sigint_cleanup(void * xsa)488 sigint_cleanup(void *xsa)
489 {
490 const struct sigaction *sa;
491
492 sa = xsa;
493 sigaction(SIGINT, sa, NULL);
494 }
495
496 void
sigprocmask_cleanup(void * xmask)497 sigprocmask_cleanup(void *xmask)
498 {
499 sigset_t *mask;
500
501 mask = xmask;
502 sigprocmask(SIG_SETMASK, mask, NULL);
503 }
504
505 void
open_cleanup(void * xptr)506 open_cleanup(void *xptr)
507 {
508 int *ptr;
509
510 ptr = xptr;
511 xclose(*ptr);
512 }
513
514 void
opendir_cleanup(void * xdir)515 opendir_cleanup(void *xdir)
516 {
517 DIR *dir;
518
519 dir = xdir;
520 xclosedir(dir);
521 }
522
523 void
xfree_indirect(void * xptr)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
reset(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*/
seterror(unsigned int id,...)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
fixerror(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 setcopy(STRstatus, STR1, VAR_READWRITE);/*FIXRESET*/
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*/
stderror(unsigned int id,...)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 }
657