1 /* arsup.c - Archive support for MRI compatibility
2 Copyright (C) 1992-2021 Free Software Foundation, Inc.
3
4 This file is part of GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* Contributed by Steve Chamberlain
23 sac@cygnus.com
24
25 This file looks after requests from arparse.y, to provide the MRI
26 style librarian command syntax + 1 word LIST. */
27
28 #include "sysdep.h"
29 #include "bfd.h"
30 #include "libiberty.h"
31 #include "filenames.h"
32 #include "bucomm.h"
33 #include "arsup.h"
34
35 static void map_over_list
36 (bfd *, void (*function) (bfd *, bfd *), struct list *);
37 static void ar_directory_doer (bfd *, bfd *);
38 static void ar_addlib_doer (bfd *, bfd *);
39
40 extern int verbose;
41 extern int deterministic;
42
43 static bfd *obfd;
44 static char *real_name;
45 static char *temp_name;
46 static int temp_fd;
47 static FILE *outfile;
48
49 static void
map_over_list(bfd * arch,void (* function)(bfd *,bfd *),struct list * list)50 map_over_list (bfd *arch, void (*function) (bfd *, bfd *), struct list *list)
51 {
52 bfd *head;
53
54 if (list == NULL)
55 {
56 bfd *next;
57
58 head = arch->archive_next;
59 while (head != NULL)
60 {
61 next = head->archive_next;
62 function (head, (bfd *) NULL);
63 head = next;
64 }
65 }
66 else
67 {
68 struct list *ptr;
69
70 /* This may appear to be a baroque way of accomplishing what we
71 want. however we have to iterate over the filenames in order
72 to notice where a filename is requested but does not exist in
73 the archive. Ditto mapping over each file each time -- we
74 want to hack multiple references. */
75 for (ptr = list; ptr; ptr = ptr->next)
76 {
77 bool found = false;
78 bfd *prev = arch;
79
80 for (head = arch->archive_next; head; head = head->archive_next)
81 {
82 if (bfd_get_filename (head) != NULL
83 && FILENAME_CMP (ptr->name, bfd_get_filename (head)) == 0)
84 {
85 found = true;
86 function (head, prev);
87 }
88 prev = head;
89 }
90 if (! found)
91 fprintf (stderr, _("No entry %s in archive.\n"), ptr->name);
92 }
93 }
94 }
95
96
97
98 static void
ar_directory_doer(bfd * abfd,bfd * ignore ATTRIBUTE_UNUSED)99 ar_directory_doer (bfd *abfd, bfd *ignore ATTRIBUTE_UNUSED)
100 {
101 print_arelt_descr(outfile, abfd, verbose, false);
102 }
103
104 void
ar_directory(char * ar_name,struct list * list,char * output)105 ar_directory (char *ar_name, struct list *list, char *output)
106 {
107 bfd *arch;
108
109 arch = open_inarch (ar_name, (char *) NULL);
110 if (output)
111 {
112 outfile = fopen(output,"w");
113 if (outfile == 0)
114 {
115 outfile = stdout;
116 fprintf (stderr,_("Can't open file %s\n"), output);
117 output = 0;
118 }
119 }
120 else
121 outfile = stdout;
122
123 map_over_list (arch, ar_directory_doer, list);
124
125 bfd_close (arch);
126
127 if (output)
128 fclose (outfile);
129 }
130
131 void
prompt(void)132 prompt (void)
133 {
134 extern int interactive;
135
136 if (interactive)
137 {
138 printf ("AR >");
139 fflush (stdout);
140 }
141 }
142
143 void
maybequit(void)144 maybequit (void)
145 {
146 if (! interactive)
147 xexit (9);
148 }
149
150
151 void
ar_open(char * name,int t)152 ar_open (char *name, int t)
153 {
154 real_name = xstrdup (name);
155 temp_name = make_tempname (real_name, &temp_fd);
156
157 if (temp_name == NULL)
158 {
159 fprintf (stderr, _("%s: Can't open temporary file (%s)\n"),
160 program_name, strerror(errno));
161 maybequit ();
162 return;
163 }
164
165 obfd = bfd_fdopenw (temp_name, NULL, temp_fd);
166
167 if (!obfd)
168 {
169 fprintf (stderr,
170 _("%s: Can't open output archive %s\n"),
171 program_name, temp_name);
172
173 maybequit ();
174 }
175 else
176 {
177 if (!t)
178 {
179 bfd **ptr;
180 bfd *element;
181 bfd *ibfd;
182
183 #if BFD_SUPPORTS_PLUGINS
184 ibfd = bfd_openr (name, "plugin");
185 #else
186 ibfd = bfd_openr (name, NULL);
187 #endif
188
189 if (!ibfd)
190 {
191 fprintf (stderr,_("%s: Can't open input archive %s\n"),
192 program_name, name);
193 maybequit ();
194 return;
195 }
196
197 if (!bfd_check_format(ibfd, bfd_archive))
198 {
199 fprintf (stderr,
200 _("%s: file %s is not an archive\n"),
201 program_name, name);
202 maybequit ();
203 return;
204 }
205
206 ptr = &(obfd->archive_head);
207 element = bfd_openr_next_archived_file (ibfd, NULL);
208
209 while (element)
210 {
211 *ptr = element;
212 ptr = &element->archive_next;
213 element = bfd_openr_next_archived_file (ibfd, element);
214 }
215 }
216
217 bfd_set_format (obfd, bfd_archive);
218
219 obfd->has_armap = 1;
220 obfd->is_thin_archive = 0;
221 }
222 }
223
224 static void
ar_addlib_doer(bfd * abfd,bfd * prev)225 ar_addlib_doer (bfd *abfd, bfd *prev)
226 {
227 /* Add this module to the output bfd. */
228 if (prev != NULL)
229 prev->archive_next = abfd->archive_next;
230
231 abfd->archive_next = obfd->archive_head;
232 obfd->archive_head = abfd;
233 }
234
235 void
ar_addlib(char * name,struct list * list)236 ar_addlib (char *name, struct list *list)
237 {
238 if (obfd == NULL)
239 {
240 fprintf (stderr, _("%s: no output archive specified yet\n"), program_name);
241 maybequit ();
242 }
243 else
244 {
245 bfd *arch;
246
247 arch = open_inarch (name, (char *) NULL);
248 if (arch != NULL)
249 map_over_list (arch, ar_addlib_doer, list);
250
251 /* Don't close the bfd, since it will make the elements disappear. */
252 }
253 }
254
255 void
ar_addmod(struct list * list)256 ar_addmod (struct list *list)
257 {
258 if (!obfd)
259 {
260 fprintf (stderr, _("%s: no open output archive\n"), program_name);
261 maybequit ();
262 }
263 else
264 {
265 while (list)
266 {
267 bfd *abfd;
268
269 #if BFD_SUPPORTS_PLUGINS
270 abfd = bfd_openr (list->name, "plugin");
271 #else
272 abfd = bfd_openr (list->name, NULL);
273 #endif
274 if (!abfd)
275 {
276 fprintf (stderr, _("%s: can't open file %s\n"),
277 program_name, list->name);
278 maybequit ();
279 }
280 else
281 {
282 abfd->archive_next = obfd->archive_head;
283 obfd->archive_head = abfd;
284 }
285 list = list->next;
286 }
287 }
288 }
289
290
291 void
ar_clear(void)292 ar_clear (void)
293 {
294 if (obfd)
295 obfd->archive_head = 0;
296 }
297
298 void
ar_delete(struct list * list)299 ar_delete (struct list *list)
300 {
301 if (!obfd)
302 {
303 fprintf (stderr, _("%s: no open output archive\n"), program_name);
304 maybequit ();
305 }
306 else
307 {
308 while (list)
309 {
310 /* Find this name in the archive. */
311 bfd *member = obfd->archive_head;
312 bfd **prev = &(obfd->archive_head);
313 int found = 0;
314
315 while (member)
316 {
317 if (FILENAME_CMP (bfd_get_filename (member), list->name) == 0)
318 {
319 *prev = member->archive_next;
320 found = 1;
321 }
322 else
323 prev = &(member->archive_next);
324
325 member = member->archive_next;
326 }
327
328 if (!found)
329 {
330 fprintf (stderr, _("%s: can't find module file %s\n"),
331 program_name, list->name);
332 maybequit ();
333 }
334
335 list = list->next;
336 }
337 }
338 }
339
340 void
ar_save(void)341 ar_save (void)
342 {
343 if (!obfd)
344 {
345 fprintf (stderr, _("%s: no open output archive\n"), program_name);
346 maybequit ();
347 }
348 else
349 {
350 struct stat target_stat;
351
352 if (deterministic > 0)
353 obfd->flags |= BFD_DETERMINISTIC_OUTPUT;
354
355 temp_fd = dup (temp_fd);
356 bfd_close (obfd);
357
358 if (stat (real_name, &target_stat) != 0)
359 {
360 /* The temp file created in ar_open has mode 0600 as per mkstemp.
361 Create the real empty output file here so smart_rename will
362 update the mode according to the process umask. */
363 obfd = bfd_openw (real_name, NULL);
364 if (obfd != NULL)
365 {
366 bfd_set_format (obfd, bfd_archive);
367 bfd_close (obfd);
368 }
369 }
370
371 smart_rename (temp_name, real_name, temp_fd, NULL, false);
372 obfd = 0;
373 free (temp_name);
374 free (real_name);
375 }
376 }
377
378 void
ar_replace(struct list * list)379 ar_replace (struct list *list)
380 {
381 if (!obfd)
382 {
383 fprintf (stderr, _("%s: no open output archive\n"), program_name);
384 maybequit ();
385 }
386 else
387 {
388 while (list)
389 {
390 /* Find this name in the archive. */
391 bfd *member = obfd->archive_head;
392 bfd **prev = &(obfd->archive_head);
393 int found = 0;
394
395 while (member)
396 {
397 if (FILENAME_CMP (bfd_get_filename (member), list->name) == 0)
398 {
399 /* Found the one to replace. */
400 bfd *abfd = bfd_openr (list->name, NULL);
401
402 if (!abfd)
403 {
404 fprintf (stderr, _("%s: can't open file %s\n"),
405 program_name, list->name);
406 maybequit ();
407 }
408 else
409 {
410 *prev = abfd;
411 abfd->archive_next = member->archive_next;
412 found = 1;
413 }
414 }
415 else
416 {
417 prev = &(member->archive_next);
418 }
419 member = member->archive_next;
420 }
421
422 if (!found)
423 {
424 bfd *abfd = bfd_openr (list->name, NULL);
425
426 fprintf (stderr,_("%s: can't find module file %s\n"),
427 program_name, list->name);
428 if (!abfd)
429 {
430 fprintf (stderr, _("%s: can't open file %s\n"),
431 program_name, list->name);
432 maybequit ();
433 }
434 else
435 *prev = abfd;
436 }
437
438 list = list->next;
439 }
440 }
441 }
442
443 /* And I added this one. */
444 void
ar_list(void)445 ar_list (void)
446 {
447 if (!obfd)
448 {
449 fprintf (stderr, _("%s: no open output archive\n"), program_name);
450 maybequit ();
451 }
452 else
453 {
454 bfd *abfd;
455
456 outfile = stdout;
457 verbose =1 ;
458 printf (_("Current open archive is %s\n"), bfd_get_filename (obfd));
459
460 for (abfd = obfd->archive_head;
461 abfd != (bfd *)NULL;
462 abfd = abfd->archive_next)
463 ar_directory_doer (abfd, (bfd *) NULL);
464 }
465 }
466
467 void
ar_end(void)468 ar_end (void)
469 {
470 if (obfd)
471 {
472 bfd_cache_close (obfd);
473 unlink (bfd_get_filename (obfd));
474 }
475 }
476
477 void
ar_extract(struct list * list)478 ar_extract (struct list *list)
479 {
480 if (!obfd)
481 {
482 fprintf (stderr, _("%s: no open archive\n"), program_name);
483 maybequit ();
484 }
485 else
486 {
487 while (list)
488 {
489 /* Find this name in the archive. */
490 bfd *member = obfd->archive_head;
491 int found = 0;
492
493 while (member && !found)
494 {
495 if (FILENAME_CMP (bfd_get_filename (member), list->name) == 0)
496 {
497 extract_file (member);
498 found = 1;
499 }
500
501 member = member->archive_next;
502 }
503
504 if (!found)
505 {
506 bfd_openr (list->name, NULL);
507 fprintf (stderr, _("%s: can't find module file %s\n"),
508 program_name, list->name);
509 }
510
511 list = list->next;
512 }
513 }
514 }
515