binutils/arsup.c

   1 /* arsup.c - Archive support for MRI compatibility
   2    Copyright (C) 1992-2020 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 FILE *outfile;
  46
  47 static void
  48 map_over_list (bfd *arch, void (*function) (bfd *, bfd *), struct list *list)
  49 {
  50   bfd *head;
  51
  52   if (list == NULL)
  53     {
  54       bfd *next;
  55
  56       head = arch->archive_next;
  57       while (head != NULL)
  58         {
  59           next = head->archive_next;
  60           function (head, (bfd *) NULL);
  61           head = next;
  62         }
  63     }
  64   else
  65     {
  66       struct list *ptr;
  67
  68       /* This may appear to be a baroque way of accomplishing what we
  69          want.  however we have to iterate over the filenames in order
  70          to notice where a filename is requested but does not exist in
  71          the archive.  Ditto mapping over each file each time -- we
  72          want to hack multiple references.  */
  73       for (ptr = list; ptr; ptr = ptr->next)
  74         {
  75           bfd_boolean found = FALSE;
  76           bfd *prev = arch;
  77
  78           for (head = arch->archive_next; head; head = head->archive_next)
  79             {
  80               if (head->filename != NULL
  81                   && FILENAME_CMP (ptr->name, head->filename) == 0)
  82                 {
  83                   found = TRUE;
  84                   function (head, prev);
  85                 }
  86               prev = head;
  87             }
  88           if (! found)
  89             fprintf (stderr, _("No entry %s in archive.\n"), ptr->name);
  90         }
  91     }
  92 }
  93
  94
  95
  96 static void
  97 ar_directory_doer (bfd *abfd, bfd *ignore ATTRIBUTE_UNUSED)
  98 {
  99   print_arelt_descr(outfile, abfd, verbose, FALSE);
 100 }
 101
 102 void
 103 ar_directory (char *ar_name, struct list *list, char *output)
 104 {
 105   bfd *arch;
 106
 107   arch = open_inarch (ar_name, (char *) NULL);
 108   if (output)
 109     {
 110       outfile = fopen(output,"w");
 111       if (outfile == 0)
 112         {
 113           outfile = stdout;
 114           fprintf (stderr,_("Can't open file %s\n"), output);
 115           output = 0;
 116         }
 117     }
 118   else
 119     outfile = stdout;
 120
 121   map_over_list (arch, ar_directory_doer, list);
 122
 123   bfd_close (arch);
 124
 125   if (output)
 126    fclose (outfile);
 127 }
 128
 129 void
 130 prompt (void)
 131 {
 132   extern int interactive;
 133
 134   if (interactive)
 135     {
 136       printf ("AR >");
 137       fflush (stdout);
 138     }
 139 }
 140
 141 void
 142 maybequit (void)
 143 {
 144   if (! interactive)
 145     xexit (9);
 146 }
 147
 148
 149 void
 150 ar_open (char *name, int t)
 151 {
 152   char *tname;
 153   const char *bname = lbasename (name);
 154   real_name = name;
 155
 156   /* Prepend tmp- to the beginning, to avoid file-name clashes after
 157      truncation on filesystems with limited namespaces (DOS).  */
 158   if (asprintf (&tname, "%.*stmp-%s", (int) (bname - name), name, bname) == -1)
 159     {
 160       fprintf (stderr, _("%s: Can't allocate memory for temp name (%s)\n"),
 161                program_name, strerror(errno));
 162       maybequit ();
 163       return;
 164     }
 165
 166   obfd = bfd_openw (tname, NULL);
 167
 168   if (!obfd)
 169     {
 170       fprintf (stderr,
 171                _("%s: Can't open output archive %s\n"),
 172                program_name,  tname);
 173
 174       maybequit ();
 175     }
 176   else
 177     {
 178       if (!t)
 179         {
 180           bfd **ptr;
 181           bfd *element;
 182           bfd *ibfd;
 183
 184           ibfd = bfd_openr (name, NULL);
 185
 186           if (!ibfd)
 187             {
 188               fprintf (stderr,_("%s: Can't open input archive %s\n"),
 189                        program_name, name);
 190               maybequit ();
 191               return;
 192             }
 193
 194           if (!bfd_check_format(ibfd, bfd_archive))
 195             {
 196               fprintf (stderr,
 197                        _("%s: file %s is not an archive\n"),
 198                        program_name, name);
 199               maybequit ();
 200               return;
 201             }
 202
 203           ptr = &(obfd->archive_head);
 204           element = bfd_openr_next_archived_file (ibfd, NULL);
 205
 206           while (element)
 207             {
 208               *ptr = element;
 209               ptr = &element->archive_next;
 210               element = bfd_openr_next_archived_file (ibfd, element);
 211             }
 212         }
 213
 214       bfd_set_format (obfd, bfd_archive);
 215
 216       obfd->has_armap = 1;
 217       obfd->is_thin_archive = 0;
 218     }
 219 }
 220
 221 static void
 222 ar_addlib_doer (bfd *abfd, bfd *prev)
 223 {
 224   /* Add this module to the output bfd.  */
 225   if (prev != NULL)
 226     prev->archive_next = abfd->archive_next;
 227
 228   abfd->archive_next = obfd->archive_head;
 229   obfd->archive_head = abfd;
 230 }
 231
 232 void
 233 ar_addlib (char *name, struct list *list)
 234 {
 235   if (obfd == NULL)
 236     {
 237       fprintf (stderr, _("%s: no output archive specified yet\n"), program_name);
 238       maybequit ();
 239     }
 240   else
 241     {
 242       bfd *arch;
 243
 244       arch = open_inarch (name, (char *) NULL);
 245       if (arch != NULL)
 246         map_over_list (arch, ar_addlib_doer, list);
 247
 248       /* Don't close the bfd, since it will make the elements disappear.  */
 249     }
 250 }
 251
 252 void
 253 ar_addmod (struct list *list)
 254 {
 255   if (!obfd)
 256     {
 257       fprintf (stderr, _("%s: no open output archive\n"), program_name);
 258       maybequit ();
 259     }
 260   else
 261     {
 262       while (list)
 263         {
 264           bfd *abfd;
 265
 266 #if BFD_SUPPORTS_PLUGINS
 267           abfd = bfd_openr (list->name, "plugin");
 268 #else
 269           abfd = bfd_openr (list->name, NULL);
 270 #endif
 271           if (!abfd)
 272             {
 273               fprintf (stderr, _("%s: can't open file %s\n"),
 274                        program_name, list->name);
 275               maybequit ();
 276             }
 277           else
 278             {
 279               abfd->archive_next = obfd->archive_head;
 280               obfd->archive_head = abfd;
 281             }
 282           list = list->next;
 283         }
 284     }
 285 }
 286
 287
 288 void
 289 ar_clear (void)
 290 {
 291   if (obfd)
 292     obfd->archive_head = 0;
 293 }
 294
 295 void
 296 ar_delete (struct list *list)
 297 {
 298   if (!obfd)
 299     {
 300       fprintf (stderr, _("%s: no open output archive\n"), program_name);
 301       maybequit ();
 302     }
 303   else
 304     {
 305       while (list)
 306         {
 307           /* Find this name in the archive.  */
 308           bfd *member = obfd->archive_head;
 309           bfd **prev = &(obfd->archive_head);
 310           int found = 0;
 311
 312           while (member)
 313             {
 314               if (FILENAME_CMP(member->filename, list->name) == 0)
 315                 {
 316                   *prev = member->archive_next;
 317                   found = 1;
 318                 }
 319               else
 320                 prev = &(member->archive_next);
 321
 322               member = member->archive_next;
 323             }
 324
 325           if (!found)
 326             {
 327               fprintf (stderr, _("%s: can't find module file %s\n"),
 328                        program_name, list->name);
 329               maybequit ();
 330             }
 331
 332           list = list->next;
 333         }
 334     }
 335 }
 336
 337 void
 338 ar_save (void)
 339 {
 340   if (!obfd)
 341     {
 342       fprintf (stderr, _("%s: no open output archive\n"), program_name);
 343       maybequit ();
 344     }
 345   else
 346     {
 347       char *ofilename = xstrdup (bfd_get_filename (obfd));
 348
 349       if (deterministic > 0)
 350         obfd->flags |= BFD_DETERMINISTIC_OUTPUT;
 351
 352       bfd_close (obfd);
 353
 354       smart_rename (ofilename, real_name, 0);
 355       obfd = 0;
 356       free (ofilename);
 357     }
 358 }
 359
 360 void
 361 ar_replace (struct list *list)
 362 {
 363   if (!obfd)
 364     {
 365       fprintf (stderr, _("%s: no open output archive\n"), program_name);
 366       maybequit ();
 367     }
 368   else
 369     {
 370       while (list)
 371         {
 372           /* Find this name in the archive.  */
 373           bfd *member = obfd->archive_head;
 374           bfd **prev = &(obfd->archive_head);
 375           int found = 0;
 376
 377           while (member)
 378             {
 379               if (FILENAME_CMP (member->filename, list->name) == 0)
 380                 {
 381                   /* Found the one to replace.  */
 382                   bfd *abfd = bfd_openr (list->name, NULL);
 383
 384                   if (!abfd)
 385                     {
 386                       fprintf (stderr, _("%s: can't open file %s\n"),
 387                                program_name, list->name);
 388                       maybequit ();
 389                     }
 390                   else
 391                     {
 392                       *prev = abfd;
 393                       abfd->archive_next = member->archive_next;
 394                       found = 1;
 395                     }
 396                 }
 397               else
 398                 {
 399                   prev = &(member->archive_next);
 400                 }
 401               member = member->archive_next;
 402             }
 403
 404           if (!found)
 405             {
 406               bfd *abfd = bfd_openr (list->name, NULL);
 407
 408               fprintf (stderr,_("%s: can't find module file %s\n"),
 409                        program_name, list->name);
 410               if (!abfd)
 411                 {
 412                   fprintf (stderr, _("%s: can't open file %s\n"),
 413                            program_name, list->name);
 414                   maybequit ();
 415                 }
 416               else
 417                 *prev = abfd;
 418             }
 419
 420           list = list->next;
 421         }
 422     }
 423 }
 424
 425 /* And I added this one.  */
 426 void
 427 ar_list (void)
 428 {
 429   if (!obfd)
 430     {
 431       fprintf (stderr, _("%s: no open output archive\n"), program_name);
 432       maybequit ();
 433     }
 434   else
 435     {
 436       bfd *abfd;
 437
 438       outfile = stdout;
 439       verbose =1 ;
 440       printf (_("Current open archive is %s\n"), bfd_get_filename (obfd));
 441
 442       for (abfd = obfd->archive_head;
 443            abfd != (bfd *)NULL;
 444            abfd = abfd->archive_next)
 445         ar_directory_doer (abfd, (bfd *) NULL);
 446     }
 447 }
 448
 449 void
 450 ar_end (void)
 451 {
 452   if (obfd)
 453     {
 454       bfd_cache_close (obfd);
 455       unlink (bfd_get_filename (obfd));
 456     }
 457 }
 458
 459 void
 460 ar_extract (struct list *list)
 461 {
 462   if (!obfd)
 463     {
 464       fprintf (stderr, _("%s: no open archive\n"), program_name);
 465       maybequit ();
 466     }
 467   else
 468     {
 469       while (list)
 470         {
 471           /* Find this name in the archive.  */
 472           bfd *member = obfd->archive_head;
 473           int found = 0;
 474
 475           while (member && !found)
 476             {
 477               if (FILENAME_CMP (member->filename, list->name) == 0)
 478                 {
 479                   extract_file (member);
 480                   found = 1;
 481                 }
 482
 483               member = member->archive_next;
 484             }
 485
 486           if (!found)
 487             {
 488               bfd_openr (list->name, NULL);
 489               fprintf (stderr, _("%s: can't find module file %s\n"),
 490                        program_name, list->name);
 491             }
 492
 493           list = list->next;
 494         }
 495     }
 496 }