libopkg/pkg_hash.c

   1 /* opkg_hash.c - the opkg package management system
   2
   3    Steven M. Ayer
   4
   5    Copyright (C) 2002 Compaq Computer Corporation
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include <stdio.h>
  19
  20 #include "hash_table.h"
  21 #include "pkg.h"
  22 #include "opkg_message.h"
  23 #include "pkg_vec.h"
  24 #include "pkg_hash.h"
  25 #include "parse_util.h"
  26 #include "pkg_parse.h"
  27 #include "opkg_utils.h"
  28 #include "sprintf_alloc.h"
  29 #include "file_util.h"
  30 #include "libbb/libbb.h"
  31 #include "libbb/gzip.h"
  32
  33 void pkg_hash_init(void)
  34 {
  35         hash_table_init("pkg-hash", &conf->pkg_hash,
  36                         OPKG_CONF_DEFAULT_HASH_LEN);
  37 }
  38
  39 static void free_pkgs(const char *key, void *entry, void *data)
  40 {
  41         int i;
  42         abstract_pkg_t *ab_pkg;
  43
  44         /* Each entry in the hash table is an abstract package, which contains
  45          * a list of packages that provide the abstract package.
  46          */
  47
  48         ab_pkg = (abstract_pkg_t *) entry;
  49
  50         if (ab_pkg->pkgs) {
  51                 for (i = 0; i < ab_pkg->pkgs->len; i++) {
  52                         pkg_deinit(ab_pkg->pkgs->pkgs[i]);
  53                         free(ab_pkg->pkgs->pkgs[i]);
  54                 }
  55         }
  56
  57         abstract_pkg_vec_free(ab_pkg->provided_by);
  58         abstract_pkg_vec_free(ab_pkg->replaced_by);
  59         pkg_vec_free(ab_pkg->pkgs);
  60         free(ab_pkg->depended_upon_by);
  61         free(ab_pkg->name);
  62         free(ab_pkg);
  63 }
  64
  65 void pkg_hash_deinit(void)
  66 {
  67         hash_table_foreach(&conf->pkg_hash, free_pkgs, NULL);
  68         hash_table_deinit(&conf->pkg_hash);
  69 }
  70
  71 int dist_hash_add_from_file(const char *lists_dir, pkg_src_t * dist)
  72 {
  73         nv_pair_list_elt_t *l;
  74         char *list_file, *subname;
  75
  76         list_for_each_entry(l, &conf->arch_list.head, node) {
  77                 nv_pair_t *nv = (nv_pair_t *) l->data;
  78                 sprintf_alloc(&subname, "%s-%s", dist->name, nv->name);
  79                 sprintf_alloc(&list_file, "%s/%s", lists_dir, subname);
  80
  81                 if (file_exists(list_file)) {
  82                         if (pkg_hash_add_from_file(list_file, dist, NULL, 0)) {
  83                                 free(list_file);
  84                                 return -1;
  85                         }
  86                         pkg_src_list_append(&conf->pkg_src_list, subname,
  87                                             dist->value, "__dummy__", 0);
  88                 }
  89
  90                 free(list_file);
  91         }
  92
  93         return 0;
  94 }
  95
  96 int
  97 pkg_hash_add_from_file(const char *file_name,
  98                        pkg_src_t * src, pkg_dest_t * dest, int is_status_file)
  99 {
 100         pkg_t *pkg;
 101         FILE *fp;
 102         char *buf;
 103         const size_t len = 4096;
 104         int ret = 0;
 105         struct gzip_handle zh;
 106
 107         if (src && src->gzip) {
 108                 fp = gzip_fdopen(&zh, file_name);
 109         } else {
 110                 fp = fopen(file_name, "r");
 111         }
 112
 113         if (fp == NULL) {
 114                 opkg_perror(ERROR, "Failed to open %s", file_name);
 115                 return -1;
 116         }
 117
 118         buf = xmalloc(len);
 119
 120         do {
 121                 pkg = pkg_new();
 122                 pkg->src = src;
 123                 pkg->dest = dest;
 124
 125                 ret = parse_from_stream_nomalloc(pkg_parse_line, pkg, fp, 0,
 126                                                  &buf, len);
 127
 128                 if (pkg->name == NULL) {
 129                         /* probably just a blank line */
 130                         ret = 1;
 131                 }
 132
 133                 if (ret) {
 134                         pkg_deinit(pkg);
 135                         free(pkg);
 136                         if (ret == -1)
 137                                 break;
 138                         if (ret == 1)
 139                                 /* Probably a blank line, continue parsing. */
 140                                 ret = 0;
 141                         continue;
 142                 }
 143
 144                 if (!pkg_get_architecture(pkg) || !pkg_get_arch_priority(pkg)) {
 145                         char *version_str = pkg_version_str_alloc(pkg);
 146                         opkg_msg(NOTICE, "Package %s version %s has no "
 147                                  "valid architecture, ignoring.\n",
 148                                  pkg->name, version_str);
 149                         free(version_str);
 150                         continue;
 151                 }
 152
 153                 hash_insert_pkg(pkg, is_status_file);
 154
 155         } while (!feof(fp));
 156
 157         free(buf);
 158         fclose(fp);
 159
 160         if (src && src->gzip)
 161                 gzip_close(&zh);
 162
 163         return ret;
 164 }
 165
 166 /*
 167  * Load in feed files from the cached "src" and/or "src/gz" locations.
 168  */
 169 int pkg_hash_load_feeds(void)
 170 {
 171         pkg_src_list_elt_t *iter;
 172         pkg_src_t *src, *subdist;
 173         char *list_file, *lists_dir;
 174
 175         opkg_msg(INFO, "\n");
 176
 177         lists_dir = conf->restrict_to_default_dest ?
 178             conf->default_dest->lists_dir : conf->lists_dir;
 179
 180         for (iter = void_list_first(&conf->pkg_src_list); iter;
 181              iter = void_list_next(&conf->pkg_src_list, iter)) {
 182
 183                 src = (pkg_src_t *) iter->data;
 184
 185                 sprintf_alloc(&list_file, "%s/%s", lists_dir, src->name);
 186
 187                 if (file_exists(list_file)) {
 188                         if (pkg_hash_add_from_file(list_file, src, NULL, 0)) {
 189                                 free(list_file);
 190                                 return -1;
 191                         }
 192                 }
 193                 free(list_file);
 194         }
 195
 196         return 0;
 197 }
 198
 199 /*
 200  * Load in status files from the configured "dest"s.
 201  */
 202 int pkg_hash_load_status_files(void)
 203 {
 204         pkg_dest_list_elt_t *iter;
 205         pkg_dest_t *dest;
 206
 207         opkg_msg(INFO, "\n");
 208
 209         for (iter = void_list_first(&conf->pkg_dest_list); iter;
 210              iter = void_list_next(&conf->pkg_dest_list, iter)) {
 211
 212                 dest = (pkg_dest_t *) iter->data;
 213
 214                 if (file_exists(dest->status_file_name)) {
 215                         if (pkg_hash_add_from_file
 216                             (dest->status_file_name, NULL, dest, 1))
 217                                 return -1;
 218                 }
 219         }
 220
 221         return 0;
 222 }
 223
 224 static abstract_pkg_t *abstract_pkg_fetch_by_name(const char *pkg_name)
 225 {
 226         return (abstract_pkg_t *) hash_table_get(&conf->pkg_hash, pkg_name);
 227 }
 228
 229 pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg,
 230                                                   int (*constraint_fcn) (pkg_t *
 231                                                                          pkg,
 232                                                                          void
 233                                                                          *cdata),
 234                                                   void *cdata, int quiet)
 235 {
 236         int i, j;
 237         int nprovides = 0;
 238         int nmatching = 0;
 239         int wrong_arch_found = 0;
 240         int arch_priority;
 241         pkg_vec_t *matching_pkgs;
 242         abstract_pkg_vec_t *matching_apkgs;
 243         abstract_pkg_vec_t *provided_apkg_vec;
 244         abstract_pkg_t **provided_apkgs;
 245         abstract_pkg_vec_t *providers;
 246         pkg_t *latest_installed_parent = NULL;
 247         pkg_t *latest_matching = NULL;
 248         pkg_t *priorized_matching = NULL;
 249         pkg_t *held_pkg = NULL;
 250         pkg_t *good_pkg_by_name = NULL;
 251
 252         if (apkg == NULL || apkg->provided_by == NULL
 253             || (apkg->provided_by->len == 0))
 254                 return NULL;
 255
 256         matching_pkgs = pkg_vec_alloc();
 257         matching_apkgs = abstract_pkg_vec_alloc();
 258         providers = abstract_pkg_vec_alloc();
 259
 260         opkg_msg(DEBUG, "Best installation candidate for %s:\n", apkg->name);
 261
 262         provided_apkg_vec = apkg->provided_by;
 263         nprovides = provided_apkg_vec->len;
 264         provided_apkgs = provided_apkg_vec->pkgs;
 265         if (nprovides > 1)
 266                 opkg_msg(DEBUG, "apkg=%s nprovides=%d.\n", apkg->name,
 267                          nprovides);
 268
 269         /* accumulate all the providers */
 270         for (i = 0; i < nprovides; i++) {
 271                 abstract_pkg_t *provider_apkg = provided_apkgs[i];
 272                 opkg_msg(DEBUG, "Adding %s to providers.\n",
 273                          provider_apkg->name);
 274                 abstract_pkg_vec_insert(providers, provider_apkg);
 275         }
 276         nprovides = providers->len;
 277
 278         for (i = 0; i < nprovides; i++) {
 279                 abstract_pkg_t *provider_apkg =
 280                     abstract_pkg_vec_get(providers, i);
 281                 abstract_pkg_t *replacement_apkg = NULL;
 282                 pkg_vec_t *vec;
 283
 284                 if (provider_apkg->replaced_by
 285                     && provider_apkg->replaced_by->len) {
 286                         replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 287                         if (provider_apkg->replaced_by->len > 1) {
 288                                 opkg_msg(NOTICE, "Multiple replacers for %s, "
 289                                          "using first one (%s).\n",
 290                                          provider_apkg->name,
 291                                          replacement_apkg->name);
 292                         }
 293                 }
 294
 295                 if (replacement_apkg)
 296                         opkg_msg(DEBUG,
 297                                  "replacement_apkg=%s for provider_apkg=%s.\n",
 298                                  replacement_apkg->name, provider_apkg->name);
 299
 300                 if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 301                         if (abstract_pkg_vec_contains
 302                             (providers, replacement_apkg))
 303                                 continue;
 304                         else
 305                                 provider_apkg = replacement_apkg;
 306                 }
 307
 308                 if (!(vec = provider_apkg->pkgs)) {
 309                         opkg_msg(DEBUG, "No pkgs for provider_apkg %s.\n",
 310                                  provider_apkg->name);
 311                         continue;
 312                 }
 313
 314                 /* now check for supported architecture */
 315                 {
 316                         int max_count = 0;
 317
 318                         /* count packages matching max arch priority and keep track of last one */
 319                         for (j = 0; j < vec->len; j++) {
 320                                 pkg_t *maybe = vec->pkgs[j];
 321                                 arch_priority = pkg_get_arch_priority(maybe);
 322
 323                                 opkg_msg(DEBUG,
 324                                          "%s arch=%s arch_priority=%d version=%s.\n",
 325                                          maybe->name, pkg_get_architecture(maybe),
 326                                          arch_priority, pkg_get_string(maybe, PKG_VERSION));
 327                                 /* We make sure not to add the same package twice. Need to search for the reason why
 328                                    they show up twice sometimes. */
 329                                 if ((arch_priority > 0)
 330                                     &&
 331                                     (!pkg_vec_contains(matching_pkgs, maybe))) {
 332                                         max_count++;
 333                                         abstract_pkg_vec_insert(matching_apkgs,
 334                                                                 maybe->parent);
 335                                         pkg_vec_insert(matching_pkgs, maybe);
 336                                 }
 337                         }
 338
 339                         if (vec->len > 0 && matching_pkgs->len < 1)
 340                                 wrong_arch_found = 1;
 341                 }
 342         }
 343
 344         if (matching_pkgs->len < 1) {
 345                 if (wrong_arch_found)
 346                         opkg_msg(ERROR, "Packages for %s found, but"
 347                                  " incompatible with the architectures configured\n",
 348                                  apkg->name);
 349                 pkg_vec_free(matching_pkgs);
 350                 abstract_pkg_vec_free(matching_apkgs);
 351                 abstract_pkg_vec_free(providers);
 352                 return NULL;
 353         }
 354
 355         if (matching_pkgs->len > 1)
 356                 pkg_vec_sort(matching_pkgs,
 357                              pkg_name_version_and_architecture_compare);
 358         if (matching_apkgs->len > 1)
 359                 abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 360
 361         for (i = 0; i < matching_pkgs->len; i++) {
 362                 pkg_t *matching = matching_pkgs->pkgs[i];
 363                 if (constraint_fcn(matching, cdata)) {
 364                         opkg_msg(DEBUG, "Candidate: %s %s.\n",
 365                                  matching->name, pkg_get_string(matching, PKG_VERSION));
 366                         good_pkg_by_name = matching;
 367                         /* It has been provided by hand, so it is what user want */
 368                         if (matching->provided_by_hand == 1)
 369                                 break;
 370                 }
 371         }
 372
 373         for (i = 0; i < matching_pkgs->len; i++) {
 374                 pkg_t *matching = matching_pkgs->pkgs[i];
 375                 latest_matching = matching;
 376                 if (matching->parent->state_status == SS_INSTALLED
 377                     || matching->parent->state_status == SS_UNPACKED)
 378                         latest_installed_parent = matching;
 379                 if (matching->state_flag & (SF_HOLD | SF_PREFER)) {
 380                         if (held_pkg)
 381                                 opkg_msg(NOTICE,
 382                                          "Multiple packages (%s and %s) providing"
 383                                          " same name marked HOLD or PREFER. "
 384                                          "Using latest.\n", held_pkg->name,
 385                                          matching->name);
 386                         held_pkg = matching;
 387                 }
 388         }
 389
 390         if (!good_pkg_by_name && !held_pkg && !latest_installed_parent
 391             && matching_apkgs->len > 1 && !quiet) {
 392                 int prio = 0;
 393                 for (i = 0; i < matching_pkgs->len; i++) {
 394                         pkg_t *matching = matching_pkgs->pkgs[i];
 395                         arch_priority = pkg_get_arch_priority(matching);
 396                         if (arch_priority > prio) {
 397                                 priorized_matching = matching;
 398                                 prio = arch_priority;
 399                                 opkg_msg(DEBUG, "Match %s with priority %i.\n",
 400                                          matching->name, prio);
 401                         }
 402                 }
 403
 404         }
 405
 406         if (conf->verbosity >= INFO && matching_apkgs->len > 1) {
 407                 opkg_msg(INFO, "%d matching pkgs for apkg=%s:\n",
 408                          matching_pkgs->len, apkg->name);
 409                 for (i = 0; i < matching_pkgs->len; i++) {
 410                         pkg_t *matching = matching_pkgs->pkgs[i];
 411                         opkg_msg(INFO, "%s %s %s\n",
 412                                  matching->name, pkg_get_string(matching, PKG_VERSION),
 413                                  pkg_get_architecture(matching));
 414                 }
 415         }
 416
 417         nmatching = matching_apkgs->len;
 418
 419         pkg_vec_free(matching_pkgs);
 420         abstract_pkg_vec_free(matching_apkgs);
 421         abstract_pkg_vec_free(providers);
 422
 423         if (good_pkg_by_name) { /* We found a good candidate, we will install it */
 424                 return good_pkg_by_name;
 425         }
 426         if (held_pkg) {
 427                 opkg_msg(INFO, "Using held package %s.\n", held_pkg->name);
 428                 return held_pkg;
 429         }
 430         if (latest_installed_parent) {
 431                 opkg_msg(INFO,
 432                          "Using latest version of installed package %s.\n",
 433                          latest_installed_parent->name);
 434                 return latest_installed_parent;
 435         }
 436         if (priorized_matching) {
 437                 opkg_msg(INFO, "Using priorized matching %s %s %s.\n",
 438                          priorized_matching->name, pkg_get_string(priorized_matching, PKG_VERSION),
 439                          pkg_get_architecture(priorized_matching));
 440                 return priorized_matching;
 441         }
 442         if (nmatching > 1) {
 443                 opkg_msg(INFO, "No matching pkg out of %d matching_apkgs.\n",
 444                          nmatching);
 445                 return NULL;
 446         }
 447         if (latest_matching) {
 448                 opkg_msg(INFO, "Using latest matching %s %s %s.\n",
 449                          latest_matching->name, pkg_get_string(latest_matching, PKG_VERSION),
 450                          pkg_get_architecture(latest_matching));
 451                 return latest_matching;
 452         }
 453         return NULL;
 454 }
 455
 456 static int pkg_name_constraint_fcn(pkg_t * pkg, void *cdata)
 457 {
 458         const char *name = (const char *)cdata;
 459
 460         if (strcmp(pkg->name, name) == 0)
 461                 return 1;
 462         else
 463                 return 0;
 464 }
 465
 466 static pkg_vec_t *pkg_vec_fetch_by_name(const char *pkg_name)
 467 {
 468         abstract_pkg_t *ab_pkg;
 469
 470         if (!(ab_pkg = abstract_pkg_fetch_by_name(pkg_name)))
 471                 return NULL;
 472
 473         if (ab_pkg->pkgs)
 474                 return ab_pkg->pkgs;
 475
 476         if (ab_pkg->provided_by) {
 477                 abstract_pkg_t *abpkg =
 478                     abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 479                 if (abpkg != NULL)
 480                         return abpkg->pkgs;
 481                 else
 482                         return ab_pkg->pkgs;
 483         }
 484
 485         return NULL;
 486 }
 487
 488 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(const char *name)
 489 {
 490         abstract_pkg_t *apkg = NULL;
 491
 492         if (!(apkg = abstract_pkg_fetch_by_name(name)))
 493                 return NULL;
 494
 495         return pkg_hash_fetch_best_installation_candidate(apkg,
 496                                                           pkg_name_constraint_fcn,
 497                                                           apkg->name, 0);
 498 }
 499
 500 pkg_t *pkg_hash_fetch_by_name_version(const char *pkg_name, const char *version)
 501 {
 502         pkg_vec_t *vec;
 503         int i;
 504         char *version_str = NULL;
 505
 506         if (!(vec = pkg_vec_fetch_by_name(pkg_name)))
 507                 return NULL;
 508
 509         for (i = 0; i < vec->len; i++) {
 510                 version_str = pkg_version_str_alloc(vec->pkgs[i]);
 511                 if (!strcmp(version_str, version)) {
 512                         free(version_str);
 513                         break;
 514                 }
 515                 free(version_str);
 516         }
 517
 518         if (i == vec->len)
 519                 return NULL;
 520
 521         return vec->pkgs[i];
 522 }
 523
 524 pkg_t *pkg_hash_fetch_installed_by_name_dest(const char *pkg_name,
 525                                              pkg_dest_t * dest)
 526 {
 527         pkg_vec_t *vec;
 528         int i;
 529
 530         if (!(vec = pkg_vec_fetch_by_name(pkg_name))) {
 531                 return NULL;
 532         }
 533
 534         for (i = 0; i < vec->len; i++)
 535                 if ((vec->pkgs[i]->state_status == SS_INSTALLED
 536                      || vec->pkgs[i]->state_status == SS_UNPACKED)
 537                     && vec->pkgs[i]->dest == dest) {
 538                         return vec->pkgs[i];
 539                 }
 540
 541         return NULL;
 542 }
 543
 544 pkg_t *pkg_hash_fetch_installed_by_name(const char *pkg_name)
 545 {
 546         pkg_vec_t *vec;
 547         int i;
 548
 549         if (!(vec = pkg_vec_fetch_by_name(pkg_name))) {
 550                 return NULL;
 551         }
 552
 553         for (i = 0; i < vec->len; i++) {
 554                 if (vec->pkgs[i]->state_status == SS_INSTALLED
 555                     || vec->pkgs[i]->state_status == SS_UNPACKED) {
 556                         return vec->pkgs[i];
 557                 }
 558         }
 559
 560         return NULL;
 561 }
 562
 563 static void
 564 pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 565 {
 566         int j;
 567         abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
 568         pkg_vec_t *all = (pkg_vec_t *) data;
 569         pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 570
 571         if (!pkg_vec)
 572                 return;
 573
 574         for (j = 0; j < pkg_vec->len; j++) {
 575                 pkg_t *pkg = pkg_vec->pkgs[j];
 576                 pkg_vec_insert(all, pkg);
 577         }
 578 }
 579
 580 void pkg_hash_fetch_available(pkg_vec_t * all)
 581 {
 582         hash_table_foreach(&conf->pkg_hash, pkg_hash_fetch_available_helper,
 583                            all);
 584 }
 585
 586 static void
 587 pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry,
 588                                     void *data)
 589 {
 590         abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
 591         pkg_vec_t *all = (pkg_vec_t *) data;
 592         pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 593         int j;
 594
 595         if (!pkg_vec)
 596                 return;
 597
 598         for (j = 0; j < pkg_vec->len; j++) {
 599                 pkg_t *pkg = pkg_vec->pkgs[j];
 600                 if (pkg->state_status == SS_INSTALLED
 601                     || pkg->state_status == SS_UNPACKED)
 602                         pkg_vec_insert(all, pkg);
 603         }
 604 }
 605
 606 void pkg_hash_fetch_all_installed(pkg_vec_t * all)
 607 {
 608         hash_table_foreach(&conf->pkg_hash, pkg_hash_fetch_all_installed_helper,
 609                            all);
 610 }
 611
 612 /*
 613  * This assumes that the abstract pkg doesn't exist.
 614  */
 615 static abstract_pkg_t *add_new_abstract_pkg_by_name(const char *pkg_name)
 616 {
 617         abstract_pkg_t *ab_pkg;
 618
 619         ab_pkg = abstract_pkg_new();
 620
 621         ab_pkg->name = xstrdup(pkg_name);
 622         hash_table_insert(&conf->pkg_hash, pkg_name, ab_pkg);
 623
 624         return ab_pkg;
 625 }
 626
 627 abstract_pkg_t *ensure_abstract_pkg_by_name(const char *pkg_name)
 628 {
 629         abstract_pkg_t *ab_pkg;
 630
 631         if (!(ab_pkg = abstract_pkg_fetch_by_name(pkg_name)))
 632                 ab_pkg = add_new_abstract_pkg_by_name(pkg_name);
 633
 634         return ab_pkg;
 635 }
 636
 637 void hash_insert_pkg(pkg_t * pkg, int set_status)
 638 {
 639         abstract_pkg_t *ab_pkg;
 640
 641         ab_pkg = ensure_abstract_pkg_by_name(pkg->name);
 642         if (!ab_pkg->pkgs)
 643                 ab_pkg->pkgs = pkg_vec_alloc();
 644
 645         if (pkg->state_status == SS_INSTALLED) {
 646                 ab_pkg->state_status = SS_INSTALLED;
 647         } else if (pkg->state_status == SS_UNPACKED) {
 648                 ab_pkg->state_status = SS_UNPACKED;
 649         }
 650
 651         buildDepends(pkg);
 652
 653         buildProvides(ab_pkg, pkg);
 654
 655         init_providelist(pkg, NULL);
 656
 657         /* Need to build the conflicts graph before replaces for correct
 658          * calculation of replaced_by relation.
 659          */
 660         buildConflicts(pkg);
 661
 662         buildReplaces(ab_pkg, pkg);
 663
 664         buildDependedUponBy(pkg, ab_pkg);
 665
 666         pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status);
 667         pkg->parent = ab_pkg;
 668 }
 669
 670 static const char *strip_offline_root(const char *file_name)
 671 {
 672         unsigned int len;
 673
 674         if (conf->offline_root) {
 675                 len = strlen(conf->offline_root);
 676                 if (strncmp(file_name, conf->offline_root, len) == 0)
 677                         file_name += len;
 678         }
 679
 680         return file_name;
 681 }
 682
 683 void file_hash_remove(const char *file_name)
 684 {
 685         file_name = strip_offline_root(file_name);
 686         hash_table_remove(&conf->file_hash, file_name);
 687 }
 688
 689 pkg_t *file_hash_get_file_owner(const char *file_name)
 690 {
 691         file_name = strip_offline_root(file_name);
 692         return hash_table_get(&conf->file_hash, file_name);
 693 }
 694
 695 void file_hash_set_file_owner(const char *file_name, pkg_t * owning_pkg)
 696 {
 697         pkg_t *old_owning_pkg;
 698         int file_name_len = strlen(file_name);
 699
 700         if (file_name[file_name_len - 1] == '/')
 701                 return;
 702
 703         file_name = strip_offline_root(file_name);
 704
 705         old_owning_pkg = hash_table_get(&conf->file_hash, file_name);
 706         hash_table_insert(&conf->file_hash, file_name, owning_pkg);
 707
 708         if (old_owning_pkg) {
 709                 pkg_get_installed_files(old_owning_pkg);
 710                 str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 711                 pkg_free_installed_files(old_owning_pkg);
 712
 713                 /* mark this package to have its filelist written */
 714                 old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 715                 owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 716         }
 717 }