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 "includes.h"
  19 #include <errno.h>
  20 #include <ctype.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include "hash_table.h"
  25 #include "pkg.h"
  26 #include "opkg_message.h"
  27 #include "pkg_vec.h"
  28 #include "pkg_hash.h"
  29 #include "pkg_parse.h"
  30 #include "opkg_utils.h"
  31
  32 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name);
  33
  34 /*
  35  * this will talk to both feeds-lists files and installed status files
  36  * example api:
  37  *
  38  * hash_table_t hash;
  39  * pkg_hash_init(name, &hash, 1000);
  40  * pkg_hash_add_from_file(<feed filename>);
  41  *
  42  * the query function is just there as a shell to prove to me that this
  43  * sort of works, but isn't far from doing something useful
  44  *
  45  * -sma, 12/21/01
  46  * modified: CDW 3 Jan. 2002
  47  */
  48
  49
  50 \f
  51 int pkg_hash_init(const char *name, hash_table_t *hash, int len)
  52 {
  53   return hash_table_init(name, hash, len);
  54 }
  55
  56 void free_pkgs (const char *key, void *entry, void *data)
  57 {
  58   int i;
  59   abstract_pkg_t *ab_pkg;
  60
  61   /* each entry in the hash table is an abstract package, which contains a list
  62    * of packages that provide the abstract package */
  63
  64   ab_pkg = (abstract_pkg_t*) entry;
  65
  66   if (ab_pkg->pkgs)
  67   {
  68     for (i = 0; i < ab_pkg->pkgs->len; i++)
  69     {
  70       pkg_deinit (ab_pkg->pkgs->pkgs[i]);
  71       free (ab_pkg->pkgs->pkgs[i]);
  72     }
  73   }
  74
  75   abstract_pkg_vec_free (ab_pkg->provided_by);
  76   pkg_vec_free (ab_pkg->pkgs);
  77   free (ab_pkg->name);
  78   free (ab_pkg);
  79 }
  80
  81 void pkg_hash_deinit(hash_table_t *hash)
  82 {
  83   hash_table_foreach (hash, free_pkgs, NULL);
  84   hash_table_deinit(hash);
  85 }
  86
  87
  88 /* Find the default arch for a given package status file if none is given. */
  89 static char *pkg_get_default_arch(opkg_conf_t *conf)
  90 {
  91      nv_pair_list_elt_t *l;
  92      char *def_arch = HOST_CPU_STR;             /* Default arch */
  93      int def_prio = 0;                          /* Other archs override this */
  94
  95      l = conf->arch_list.head;
  96
  97      while (l) {
  98           nv_pair_t *nv = l->data;
  99           int priority = strtol(nv->value, NULL, 0);
 100
 101           /* Check if this arch has higher priority, and is valid */
 102           if ((priority > def_prio) &&
 103               (strcmp(nv->name, "all")) && (strcmp(nv->name, "noarch"))) {
 104                /* Our new default */
 105                def_prio = priority;
 106                def_arch = nv->name;
 107           }
 108           l = l->next;
 109      }
 110
 111      return strdup(def_arch);
 112 }
 113
 114 int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
 115                            pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 116 {
 117      hash_table_t *hash = &conf->pkg_hash;
 118      char **raw;
 119      char **raw_start;
 120      pkg_t *pkg;
 121
 122      raw = raw_start = read_raw_pkgs_from_file(file_name);
 123      if (!raw)
 124         return -ENOMEM;
 125
 126      while(*raw){         /* don't worry, we'll increment raw in the parsing function */
 127           pkg = pkg_new();
 128           if (!pkg)
 129                return -ENOMEM;
 130
 131           if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
 132                if (!pkg->architecture) {
 133                     char *version_str = pkg_version_str_alloc(pkg);
 134                     pkg->architecture = pkg_get_default_arch(conf);
 135                     opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
 136                                  pkg->name, version_str, pkg->architecture);
 137                     free(version_str);
 138                }
 139                hash_insert_pkg(hash, pkg, is_status_file,conf);
 140           } else {
 141                free(pkg);
 142           }
 143      }
 144
 145      /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
 146         memory after read_raw_pkgs_from_file */
 147      raw = raw_start;
 148      while (*raw) {
 149           free(*raw++);
 150      }
 151      free(raw_start);
 152      return 0;
 153 }
 154
 155 abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
 156 {
 157   return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
 158 }
 159
 160 abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
 161 {
 162     abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
 163     if (apkg)
 164        return NULL;
 165     return apkg->provided_by;
 166 }
 167
 168
 169 pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg,
 170                                                   int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet)
 171 {
 172      int i;
 173      int nprovides = 0;
 174      int nmatching = 0;
 175      pkg_vec_t *matching_pkgs = pkg_vec_alloc();
 176      abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
 177      abstract_pkg_vec_t *provided_apkg_vec;
 178      abstract_pkg_t **provided_apkgs;
 179      abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
 180      pkg_t *latest_installed_parent = NULL;
 181      pkg_t *latest_matching = NULL;
 182      pkg_t *held_pkg = NULL;
 183      pkg_t *good_pkg_by_name = NULL;
 184
 185      if (matching_apkgs == NULL || providers == NULL ||
 186          apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
 187           return NULL;
 188
 189      opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
 190
 191      provided_apkg_vec = apkg->provided_by;
 192      nprovides = provided_apkg_vec->len;
 193      provided_apkgs = provided_apkg_vec->pkgs;
 194      if (nprovides > 1)
 195           opkg_message(conf, OPKG_DEBUG, " apkg=%s nprovides=%d\n", apkg->name, nprovides);
 196
 197      /* accumulate all the providers */
 198      for (i = 0; i < nprovides; i++) {
 199           abstract_pkg_t *provider_apkg = provided_apkgs[i];
 200           opkg_message(conf, OPKG_DEBUG, " adding %s to providers\n", provider_apkg->name);
 201           abstract_pkg_vec_insert(providers, provider_apkg);
 202      }
 203      nprovides = providers->len;
 204
 205      for (i = 0; i < nprovides; i++) {
 206           abstract_pkg_t *provider_apkg = abstract_pkg_vec_get(providers, i);
 207           abstract_pkg_t *replacement_apkg = NULL;
 208           pkg_vec_t *vec;
 209
 210           if (provider_apkg->replaced_by && provider_apkg->replaced_by->len) {
 211                replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 212                if (provider_apkg->replaced_by->len > 1) {
 213                     opkg_message(conf, OPKG_NOTICE, "Multiple replacers for %s, using first one (%s)\n",
 214                                  provider_apkg->name, replacement_apkg->name);
 215                }
 216           }
 217
 218           if (replacement_apkg)
 219                opkg_message(conf, OPKG_DEBUG, "   replacement_apkg=%s for provider_apkg=%s\n",
 220                             replacement_apkg->name, provider_apkg->name);
 221
 222           if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 223                if (abstract_pkg_vec_contains(providers, replacement_apkg))
 224                     continue;
 225                else
 226                     provider_apkg = replacement_apkg;
 227           }
 228
 229           if (!(vec = provider_apkg->pkgs)) {
 230                opkg_message(conf, OPKG_DEBUG, "   no pkgs for provider_apkg %s\n", provider_apkg->name);
 231                continue;
 232           }
 233
 234
 235           /* now check for supported architecture */
 236           {
 237                int max_count = 0;
 238                int i;
 239
 240                /* count packages matching max arch priority and keep track of last one */
 241                for (i = 0; i < vec->len; i++) {
 242                     pkg_t *maybe = vec->pkgs[i];
 243                     opkg_message(conf, OPKG_DEBUG, "  %s arch=%s arch_priority=%d version=%s  \n",
 244                                  maybe->name, maybe->architecture, maybe->arch_priority, maybe->version);
 245                     if (maybe->arch_priority > 0)  {
 246                          max_count++;
 247                          abstract_pkg_vec_insert(matching_apkgs, maybe->parent);
 248                          pkg_vec_insert(matching_pkgs, maybe);
 249                     }
 250                }
 251           }
 252      }
 253
 254      if (matching_pkgs->len > 1)
 255           pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
 256      if (matching_apkgs->len > 1)
 257           abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 258
 259 /* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
 260    needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
 261 /* The problem is what to do when there are more than a mathing package, with the same name and several version ?
 262    Until now I always got the latest, but that breaks the downgrade option.
 263    If I stop at the first one, I would probably miss the new ones
 264    Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
 265    or from a Packages feed.
 266    It it is from a file it always need to be checked whatever version I have in feeds or everywhere, according to force-down or whatever options*/
 267 /*Pigi*/
 268
 269      for (i = 0; i < matching_pkgs->len; i++) {
 270           pkg_t *matching = matching_pkgs->pkgs[i];
 271           if (constraint_fcn(matching, cdata)) {  /* We found it */
 272              opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
 273              good_pkg_by_name = matching;
 274              if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
 275                 break;
 276           }
 277      }
 278
 279
 280      for (i = 0; i < matching_pkgs->len; i++) {
 281           pkg_t *matching = matching_pkgs->pkgs[i];
 282           latest_matching = matching;
 283           if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
 284                latest_installed_parent = matching;
 285           if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
 286                if (held_pkg)
 287                     opkg_message(conf, OPKG_ERROR, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
 288                                  held_pkg->name, matching->name);
 289                held_pkg = matching;
 290           }
 291      }
 292
 293      if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
 294           opkg_message(conf, OPKG_ERROR, "Package=%s, %d matching providers\n",
 295                        apkg->name, matching_apkgs->len);
 296           for (i = 0; i < matching_apkgs->len; i++) {
 297               abstract_pkg_t *matching = matching_apkgs->pkgs[i];
 298               opkg_message(conf, OPKG_ERROR, "    %s\n", matching->name);
 299           }
 300           opkg_message(conf, OPKG_ERROR, "Please select one with opkg install or opkg flag prefer\n");
 301      }
 302
 303      if (matching_apkgs->len > 1 && conf->verbosity > 1) {
 304           opkg_message(conf, OPKG_NOTICE, "%s: for apkg=%s, %d matching pkgs\n",
 305                        __FUNCTION__, apkg->name, matching_pkgs->len);
 306           for (i = 0; i < matching_pkgs->len; i++) {
 307                pkg_t *matching = matching_pkgs->pkgs[i];
 308                opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
 309                             matching->name, matching->version, matching->architecture);
 310           }
 311      }
 312
 313      nmatching = matching_apkgs->len;
 314
 315      pkg_vec_free(matching_pkgs);
 316      abstract_pkg_vec_free(matching_apkgs);
 317      abstract_pkg_vec_free(providers);
 318
 319      if (good_pkg_by_name) {   /* We found a good candidate, we will install it */
 320           return good_pkg_by_name;
 321      }
 322      if (held_pkg) {
 323           opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
 324           return held_pkg;
 325      }
 326      if (latest_installed_parent) {
 327           opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
 328           return latest_installed_parent;
 329      }
 330      if (nmatching > 1) {
 331           opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
 332           return NULL;
 333      }
 334      if (latest_matching) {
 335           opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
 336                        latest_matching->name, latest_matching->version, latest_matching->architecture);
 337           return latest_matching;
 338      }
 339      return NULL;
 340 }
 341
 342 static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
 343 {
 344      const char *name = (const char *)cdata;
 345      if (strcmp(pkg->name, name) == 0)
 346           return 1;
 347      else
 348           return 0;
 349 }
 350
 351 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name)
 352 {
 353      hash_table_t *hash = &conf->pkg_hash;
 354      abstract_pkg_t *apkg = NULL;
 355
 356      if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
 357           return NULL;
 358
 359      return pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0);
 360 }
 361
 362
 363 pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash,
 364                                        const char *pkg_name,
 365                                        const char * version)
 366 {
 367     pkg_vec_t * vec;
 368     register int i;
 369     char *version_str = NULL;
 370
 371     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
 372         return NULL;
 373
 374     for(i = 0; i < vec->len; i++) {
 375         version_str = pkg_version_str_alloc(vec->pkgs[i]);
 376         if(!strcmp(version_str, version)) {
 377             free(version_str);
 378             break;
 379         }
 380         free(version_str);
 381     }
 382
 383     if(i == vec->len)
 384         return NULL;
 385
 386     return vec->pkgs[i];
 387 }
 388
 389 pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
 390                                              const char *pkg_name,
 391                                              pkg_dest_t *dest)
 392 {
 393     pkg_vec_t * vec;
 394     register int i;
 395
 396     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
 397         return NULL;
 398     }
 399
 400     for(i = 0; i < vec->len; i++)
 401         if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
 402             return vec->pkgs[i];
 403         }
 404     return NULL;
 405 }
 406
 407 pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
 408                                         const char *pkg_name)
 409 {
 410     pkg_vec_t * vec;
 411     register int i;
 412
 413     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
 414         return NULL;
 415     }
 416
 417     for(i = 0; i < vec->len; i++)
 418         if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
 419             return vec->pkgs[i];
 420         }
 421
 422     return NULL;
 423 }
 424
 425 pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
 426 {
 427     abstract_pkg_t * ab_pkg;
 428
 429     if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
 430        return NULL;
 431     }
 432
 433     if (ab_pkg->pkgs) {
 434       return ab_pkg->pkgs;
 435     } else if (ab_pkg->provided_by) {
 436       abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 437       if (abpkg != NULL){
 438           return abpkg->pkgs;
 439       } else {
 440           return ab_pkg->pkgs;
 441       }
 442     } else {
 443       return NULL;
 444     }
 445 }
 446
 447 static int pkg_compare_names(const void *p1, const void *p2)
 448 {
 449   const pkg_t *pkg1 = *(const pkg_t **)p1;
 450   const pkg_t *pkg2 = *(const pkg_t **)p2;
 451   if (pkg1->name == NULL)
 452     return 1;
 453   if (pkg2->name == NULL)
 454     return -1;
 455   return(strcmp(pkg1->name, pkg2->name));
 456 }
 457
 458
 459 static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 460 {
 461   int j;
 462   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 463   pkg_vec_t *all = (pkg_vec_t *)data;
 464   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 465   if (pkg_vec) {
 466     for (j = 0; j < pkg_vec->len; j++) {
 467       pkg_t *pkg = pkg_vec->pkgs[j];
 468       pkg_vec_insert(all, pkg);
 469     }
 470   }
 471 }
 472
 473 void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
 474 {
 475     hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
 476     qsort(all->pkgs, all->len, sizeof(pkg_t *), pkg_compare_names);
 477 }
 478
 479 static void pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry, void *data)
 480 {
 481   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 482   pkg_vec_t *all = (pkg_vec_t *)data;
 483   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 484   int j;
 485   if (pkg_vec) {
 486     for (j = 0; j < pkg_vec->len; j++) {
 487       pkg_t *pkg = pkg_vec->pkgs[j];
 488       if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
 489         pkg_vec_insert(all, pkg);
 490       }
 491     }
 492   }
 493 }
 494 void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *all)
 495 {
 496     hash_table_foreach(hash, pkg_hash_fetch_all_installed_helper, all);
 497     qsort(all->pkgs, all->len, sizeof(void*), pkg_compare_names);
 498 }
 499
 500 static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
 501 {
 502   int i;
 503   pkg_t *pkg;
 504   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 505   opkg_conf_t *conf = (opkg_conf_t *)data;
 506   abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
 507   fprintf(stdout, "%s\n", ab_pkg->name);
 508   i = 0;
 509   if (dependents != NULL)
 510     while (dependents [i] != NULL)
 511       printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
 512   dependents = ab_pkg->provided_by->pkgs;
 513   i = 0;
 514   if (dependents != NULL)
 515     while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
 516       printf ("\tprovided by - %s\n", dependents [i ++]->name);
 517   pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name);
 518   if (pkg) {
 519     i = 0;
 520     while (i < pkg->depends_count)
 521       printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);
 522   }
 523 }
 524 void pkg_hash_dump(hash_table_t *hash, void *data)
 525 {
 526
 527   printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
 528   hash_table_foreach(hash, pkg_hash_dump_helper, data);
 529   printf ("\n+=+%s+=+\n\n", __FUNCTION__);
 530 }
 531
 532 abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 533 {
 534   abstract_pkg_t * ab_pkg;
 535
 536   if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
 537     ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
 538
 539   return ab_pkg;
 540 }
 541
 542 pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
 543 {
 544      abstract_pkg_t * ab_pkg;
 545      int arch_priority;
 546
 547      if(!pkg)
 548           return pkg;
 549
 550      arch_priority = pkg->arch_priority;
 551
 552      if (buildDepends(hash, pkg)<0){
 553         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 554         return NULL;
 555      }
 556      ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
 557
 558      if (set_status) {
 559           if (pkg->state_status == SS_INSTALLED) {
 560                ab_pkg->state_status = SS_INSTALLED;
 561           } else if (pkg->state_status == SS_UNPACKED) {
 562                ab_pkg->state_status = SS_UNPACKED;
 563           }
 564      }
 565
 566      if(!ab_pkg->pkgs)
 567           ab_pkg->pkgs = pkg_vec_alloc();
 568
 569      /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
 570      pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
 571      pkg->parent = ab_pkg;
 572
 573      if (buildProvides(hash, ab_pkg, pkg)<0){
 574         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 575         return NULL;
 576      }
 577      /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
 578      if (buildConflicts(hash, ab_pkg, pkg)<0){
 579         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 580         return NULL;
 581      }
 582      if (buildReplaces(hash, ab_pkg, pkg)<0) {
 583         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 584         return NULL;
 585      }
 586
 587      buildDependedUponBy(pkg, ab_pkg);
 588      return pkg;
 589 }
 590
 591 /*
 592  * this will assume that we've already determined that
 593  * the abstract pkg doesn't exist, 'cause we should know these things...
 594  */
 595 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 596 {
 597   abstract_pkg_t * ab_pkg;
 598
 599   ab_pkg = abstract_pkg_new();
 600   if (ab_pkg == NULL) { return NULL; }
 601
 602   ab_pkg->name = strdup(pkg_name);
 603   hash_table_insert(hash, pkg_name, ab_pkg);
 604
 605   return ab_pkg;
 606 }
 607
 608
 609 pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
 610 {
 611      hash_table_t *file_hash = &conf->file_hash;
 612
 613      return hash_table_get(file_hash, file_name);
 614 }
 615
 616 int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
 617 {
 618      hash_table_t *file_hash = &conf->file_hash;
 619      pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
 620      int file_name_len = strlen(file_name);
 621
 622      if (file_name[file_name_len -1] == '/')
 623           return 0;
 624
 625      if (conf->offline_root) {
 626           int len = strlen(conf->offline_root);
 627           if (strncmp(file_name, conf->offline_root, len) == 0) {
 628                file_name += len;
 629           }
 630      }
 631
 632      // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
 633      hash_table_insert(file_hash, file_name, owning_pkg);
 634      if (old_owning_pkg) {
 635           str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 636           /* mark this package to have its filelist written */
 637           old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 638           owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 639      }
 640      return 0;
 641 }
 642
 643