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   abstract_pkg_vec_free (ab_pkg->replaced_by);
  77   pkg_vec_free (ab_pkg->pkgs);
  78   free (ab_pkg->depended_upon_by);
  79   free (ab_pkg->name);
  80   free (ab_pkg);
  81 }
  82
  83 void pkg_hash_deinit(hash_table_t *hash)
  84 {
  85   hash_table_foreach (hash, free_pkgs, NULL);
  86   hash_table_deinit(hash);
  87 }
  88
  89
  90 /* Find the default arch for a given package status file if none is given. */
  91 static char *pkg_get_default_arch(opkg_conf_t *conf)
  92 {
  93      nv_pair_list_elt_t *l;
  94      char *def_arch = HOST_CPU_STR;             /* Default arch */
  95      int def_prio = 0;                          /* Other archs override this */
  96
  97      l = conf->arch_list.head;
  98
  99      while (l) {
 100           nv_pair_t *nv = l->data;
 101           int priority = strtol(nv->value, NULL, 0);
 102
 103           /* Check if this arch has higher priority, and is valid */
 104           if ((priority > def_prio) &&
 105               (strcmp(nv->name, "all")) && (strcmp(nv->name, "noarch"))) {
 106                /* Our new default */
 107                def_prio = priority;
 108                def_arch = nv->name;
 109           }
 110           l = l->next;
 111      }
 112
 113      return strdup(def_arch);
 114 }
 115
 116 int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
 117                            pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 118 {
 119      hash_table_t *hash = &conf->pkg_hash;
 120      char **raw;
 121      char **raw_start;
 122      pkg_t *pkg;
 123
 124      raw = raw_start = read_raw_pkgs_from_file(file_name);
 125      if (!raw)
 126         return -ENOMEM;
 127
 128      while(*raw){         /* don't worry, we'll increment raw in the parsing function */
 129           pkg = pkg_new();
 130           if (!pkg)
 131                return -ENOMEM;
 132
 133           if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
 134                if (!pkg->architecture) {
 135                     char *version_str = pkg_version_str_alloc(pkg);
 136                     pkg->architecture = pkg_get_default_arch(conf);
 137                     opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
 138                                  pkg->name, version_str, pkg->architecture);
 139                     free(version_str);
 140                }
 141                hash_insert_pkg(hash, pkg, is_status_file,conf);
 142           } else {
 143                free(pkg);
 144           }
 145      }
 146
 147      /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
 148         memory after read_raw_pkgs_from_file */
 149      raw = raw_start;
 150      while (*raw) {
 151           free(*raw++);
 152      }
 153      free(raw_start);
 154      return 0;
 155 }
 156
 157 abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
 158 {
 159   return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
 160 }
 161
 162 abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
 163 {
 164     abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
 165     if (apkg)
 166        return NULL;
 167     return apkg->provided_by;
 168 }
 169
 170
 171 pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg,
 172                                                   int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet)
 173 {
 174      int i;
 175      int nprovides = 0;
 176      int nmatching = 0;
 177      pkg_vec_t *matching_pkgs = pkg_vec_alloc();
 178      abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
 179      abstract_pkg_vec_t *provided_apkg_vec;
 180      abstract_pkg_t **provided_apkgs;
 181      abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
 182      pkg_t *latest_installed_parent = NULL;
 183      pkg_t *latest_matching = NULL;
 184      pkg_t *held_pkg = NULL;
 185      pkg_t *good_pkg_by_name = NULL;
 186
 187      if (matching_apkgs == NULL || providers == NULL ||
 188          apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
 189           return NULL;
 190
 191      opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
 192
 193      provided_apkg_vec = apkg->provided_by;
 194      nprovides = provided_apkg_vec->len;
 195      provided_apkgs = provided_apkg_vec->pkgs;
 196      if (nprovides > 1)
 197           opkg_message(conf, OPKG_DEBUG, " apkg=%s nprovides=%d\n", apkg->name, nprovides);
 198
 199      /* accumulate all the providers */
 200      for (i = 0; i < nprovides; i++) {
 201           abstract_pkg_t *provider_apkg = provided_apkgs[i];
 202           opkg_message(conf, OPKG_DEBUG, " adding %s to providers\n", provider_apkg->name);
 203           abstract_pkg_vec_insert(providers, provider_apkg);
 204      }
 205      nprovides = providers->len;
 206
 207      for (i = 0; i < nprovides; i++) {
 208           abstract_pkg_t *provider_apkg = abstract_pkg_vec_get(providers, i);
 209           abstract_pkg_t *replacement_apkg = NULL;
 210           pkg_vec_t *vec;
 211
 212           if (provider_apkg->replaced_by && provider_apkg->replaced_by->len) {
 213                replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 214                if (provider_apkg->replaced_by->len > 1) {
 215                     opkg_message(conf, OPKG_NOTICE, "Multiple replacers for %s, using first one (%s)\n",
 216                                  provider_apkg->name, replacement_apkg->name);
 217                }
 218           }
 219
 220           if (replacement_apkg)
 221                opkg_message(conf, OPKG_DEBUG, "   replacement_apkg=%s for provider_apkg=%s\n",
 222                             replacement_apkg->name, provider_apkg->name);
 223
 224           if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 225                if (abstract_pkg_vec_contains(providers, replacement_apkg))
 226                     continue;
 227                else
 228                     provider_apkg = replacement_apkg;
 229           }
 230
 231           if (!(vec = provider_apkg->pkgs)) {
 232                opkg_message(conf, OPKG_DEBUG, "   no pkgs for provider_apkg %s\n", provider_apkg->name);
 233                continue;
 234           }
 235
 236
 237           /* now check for supported architecture */
 238           {
 239                int max_count = 0;
 240                int i;
 241
 242                /* count packages matching max arch priority and keep track of last one */
 243                for (i = 0; i < vec->len; i++) {
 244                     pkg_t *maybe = vec->pkgs[i];
 245                     opkg_message(conf, OPKG_DEBUG, "  %s arch=%s arch_priority=%d version=%s  \n",
 246                                  maybe->name, maybe->architecture, maybe->arch_priority, maybe->version);
 247                     if (maybe->arch_priority > 0)  {
 248                          max_count++;
 249                          abstract_pkg_vec_insert(matching_apkgs, maybe->parent);
 250                          pkg_vec_insert(matching_pkgs, maybe);
 251                     }
 252                }
 253           }
 254      }
 255
 256      if (matching_pkgs->len > 1)
 257           pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
 258      if (matching_apkgs->len > 1)
 259           abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 260
 261 /* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
 262    needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
 263 /* The problem is what to do when there are more than a mathing package, with the same name and several version ?
 264    Until now I always got the latest, but that breaks the downgrade option.
 265    If I stop at the first one, I would probably miss the new ones
 266    Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
 267    or from a Packages feed.
 268    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*/
 269 /*Pigi*/
 270
 271      for (i = 0; i < matching_pkgs->len; i++) {
 272           pkg_t *matching = matching_pkgs->pkgs[i];
 273           if (constraint_fcn(matching, cdata)) {  /* We found it */
 274              opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
 275              good_pkg_by_name = matching;
 276              if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
 277                 break;
 278           }
 279      }
 280
 281
 282      for (i = 0; i < matching_pkgs->len; i++) {
 283           pkg_t *matching = matching_pkgs->pkgs[i];
 284           latest_matching = matching;
 285           if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
 286                latest_installed_parent = matching;
 287           if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
 288                if (held_pkg)
 289                     opkg_message(conf, OPKG_ERROR, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
 290                                  held_pkg->name, matching->name);
 291                held_pkg = matching;
 292           }
 293      }
 294
 295      if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
 296           opkg_message(conf, OPKG_ERROR, "Package=%s, %d matching providers\n",
 297                        apkg->name, matching_apkgs->len);
 298           for (i = 0; i < matching_apkgs->len; i++) {
 299               abstract_pkg_t *matching = matching_apkgs->pkgs[i];
 300               opkg_message(conf, OPKG_ERROR, "    %s\n", matching->name);
 301           }
 302           opkg_message(conf, OPKG_ERROR, "Please select one with opkg install or opkg flag prefer\n");
 303      }
 304
 305      if (matching_apkgs->len > 1 && conf->verbosity > 1) {
 306           opkg_message(conf, OPKG_NOTICE, "%s: for apkg=%s, %d matching pkgs\n",
 307                        __FUNCTION__, apkg->name, matching_pkgs->len);
 308           for (i = 0; i < matching_pkgs->len; i++) {
 309                pkg_t *matching = matching_pkgs->pkgs[i];
 310                opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
 311                             matching->name, matching->version, matching->architecture);
 312           }
 313      }
 314
 315      nmatching = matching_apkgs->len;
 316
 317      pkg_vec_free(matching_pkgs);
 318      abstract_pkg_vec_free(matching_apkgs);
 319      abstract_pkg_vec_free(providers);
 320
 321      if (good_pkg_by_name) {   /* We found a good candidate, we will install it */
 322           return good_pkg_by_name;
 323      }
 324      if (held_pkg) {
 325           opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
 326           return held_pkg;
 327      }
 328      if (latest_installed_parent) {
 329           opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
 330           return latest_installed_parent;
 331      }
 332      if (nmatching > 1) {
 333           opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
 334           return NULL;
 335      }
 336      if (latest_matching) {
 337           opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
 338                        latest_matching->name, latest_matching->version, latest_matching->architecture);
 339           return latest_matching;
 340      }
 341      return NULL;
 342 }
 343
 344 static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
 345 {
 346      const char *name = (const char *)cdata;
 347      if (strcmp(pkg->name, name) == 0)
 348           return 1;
 349      else
 350           return 0;
 351 }
 352
 353 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name)
 354 {
 355      hash_table_t *hash = &conf->pkg_hash;
 356      abstract_pkg_t *apkg = NULL;
 357
 358      if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
 359           return NULL;
 360
 361      return pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0);
 362 }
 363
 364
 365 pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash,
 366                                        const char *pkg_name,
 367                                        const char * version)
 368 {
 369     pkg_vec_t * vec;
 370     register int i;
 371     char *version_str = NULL;
 372
 373     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
 374         return NULL;
 375
 376     for(i = 0; i < vec->len; i++) {
 377         version_str = pkg_version_str_alloc(vec->pkgs[i]);
 378         if(!strcmp(version_str, version)) {
 379             free(version_str);
 380             break;
 381         }
 382         free(version_str);
 383     }
 384
 385     if(i == vec->len)
 386         return NULL;
 387
 388     return vec->pkgs[i];
 389 }
 390
 391 pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
 392                                              const char *pkg_name,
 393                                              pkg_dest_t *dest)
 394 {
 395     pkg_vec_t * vec;
 396     register int i;
 397
 398     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
 399         return NULL;
 400     }
 401
 402     for(i = 0; i < vec->len; i++)
 403         if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
 404             return vec->pkgs[i];
 405         }
 406     return NULL;
 407 }
 408
 409 pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
 410                                         const char *pkg_name)
 411 {
 412     pkg_vec_t * vec;
 413     register int i;
 414
 415     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
 416         return NULL;
 417     }
 418
 419     for(i = 0; i < vec->len; i++)
 420         if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
 421             return vec->pkgs[i];
 422         }
 423
 424     return NULL;
 425 }
 426
 427 pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
 428 {
 429     abstract_pkg_t * ab_pkg;
 430
 431     if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
 432        return NULL;
 433     }
 434
 435     if (ab_pkg->pkgs) {
 436       return ab_pkg->pkgs;
 437     } else if (ab_pkg->provided_by) {
 438       abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 439       if (abpkg != NULL){
 440           return abpkg->pkgs;
 441       } else {
 442           return ab_pkg->pkgs;
 443       }
 444     } else {
 445       return NULL;
 446     }
 447 }
 448
 449 static int pkg_compare_names(const void *p1, const void *p2)
 450 {
 451   const pkg_t *pkg1 = *(const pkg_t **)p1;
 452   const pkg_t *pkg2 = *(const pkg_t **)p2;
 453   if (pkg1->name == NULL)
 454     return 1;
 455   if (pkg2->name == NULL)
 456     return -1;
 457   return(strcmp(pkg1->name, pkg2->name));
 458 }
 459
 460
 461 static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 462 {
 463   int j;
 464   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 465   pkg_vec_t *all = (pkg_vec_t *)data;
 466   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 467   if (pkg_vec) {
 468     for (j = 0; j < pkg_vec->len; j++) {
 469       pkg_t *pkg = pkg_vec->pkgs[j];
 470       pkg_vec_insert(all, pkg);
 471     }
 472   }
 473 }
 474
 475 void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
 476 {
 477     hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
 478     qsort(all->pkgs, all->len, sizeof(pkg_t *), pkg_compare_names);
 479 }
 480
 481 static void pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry, void *data)
 482 {
 483   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 484   pkg_vec_t *all = (pkg_vec_t *)data;
 485   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 486   int j;
 487   if (pkg_vec) {
 488     for (j = 0; j < pkg_vec->len; j++) {
 489       pkg_t *pkg = pkg_vec->pkgs[j];
 490       if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
 491         pkg_vec_insert(all, pkg);
 492       }
 493     }
 494   }
 495 }
 496 void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *all)
 497 {
 498     hash_table_foreach(hash, pkg_hash_fetch_all_installed_helper, all);
 499     qsort(all->pkgs, all->len, sizeof(void*), pkg_compare_names);
 500 }
 501
 502 static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
 503 {
 504   int i;
 505   pkg_t *pkg;
 506   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 507   opkg_conf_t *conf = (opkg_conf_t *)data;
 508   abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
 509   fprintf(stdout, "%s\n", ab_pkg->name);
 510   i = 0;
 511   if (dependents != NULL)
 512     while (dependents [i] != NULL)
 513       printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
 514   dependents = ab_pkg->provided_by->pkgs;
 515   i = 0;
 516   if (dependents != NULL)
 517     while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
 518       printf ("\tprovided by - %s\n", dependents [i ++]->name);
 519   pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name);
 520   if (pkg) {
 521     i = 0;
 522     while (i < pkg->depends_count)
 523       printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);
 524   }
 525 }
 526 void pkg_hash_dump(hash_table_t *hash, void *data)
 527 {
 528
 529   printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
 530   hash_table_foreach(hash, pkg_hash_dump_helper, data);
 531   printf ("\n+=+%s+=+\n\n", __FUNCTION__);
 532 }
 533
 534 abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 535 {
 536   abstract_pkg_t * ab_pkg;
 537
 538   if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
 539     ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
 540
 541   return ab_pkg;
 542 }
 543
 544 pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
 545 {
 546      abstract_pkg_t * ab_pkg;
 547      int arch_priority;
 548
 549      if(!pkg)
 550           return pkg;
 551
 552      arch_priority = pkg->arch_priority;
 553
 554      if (buildDepends(hash, pkg)<0){
 555         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 556         return NULL;
 557      }
 558      ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
 559
 560      if (set_status) {
 561           if (pkg->state_status == SS_INSTALLED) {
 562                ab_pkg->state_status = SS_INSTALLED;
 563           } else if (pkg->state_status == SS_UNPACKED) {
 564                ab_pkg->state_status = SS_UNPACKED;
 565           }
 566      }
 567
 568      if(!ab_pkg->pkgs)
 569           ab_pkg->pkgs = pkg_vec_alloc();
 570
 571      /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
 572      pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
 573      pkg->parent = ab_pkg;
 574
 575      if (buildProvides(hash, ab_pkg, pkg)<0){
 576         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 577         return NULL;
 578      }
 579      /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
 580      if (buildConflicts(hash, ab_pkg, pkg)<0){
 581         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 582         return NULL;
 583      }
 584      if (buildReplaces(hash, ab_pkg, pkg)<0) {
 585         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 586         return NULL;
 587      }
 588
 589      buildDependedUponBy(pkg, ab_pkg);
 590      return pkg;
 591 }
 592
 593 /*
 594  * this will assume that we've already determined that
 595  * the abstract pkg doesn't exist, 'cause we should know these things...
 596  */
 597 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 598 {
 599   abstract_pkg_t * ab_pkg;
 600
 601   ab_pkg = abstract_pkg_new();
 602   if (ab_pkg == NULL) { return NULL; }
 603
 604   ab_pkg->name = strdup(pkg_name);
 605   hash_table_insert(hash, pkg_name, ab_pkg);
 606
 607   return ab_pkg;
 608 }
 609
 610
 611 pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
 612 {
 613      hash_table_t *file_hash = &conf->file_hash;
 614
 615      return hash_table_get(file_hash, file_name);
 616 }
 617
 618 int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
 619 {
 620      hash_table_t *file_hash = &conf->file_hash;
 621      pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
 622      int file_name_len = strlen(file_name);
 623
 624      if (file_name[file_name_len -1] == '/')
 625           return 0;
 626
 627      if (conf->offline_root) {
 628           int len = strlen(conf->offline_root);
 629           if (strncmp(file_name, conf->offline_root, len) == 0) {
 630                file_name += len;
 631           }
 632      }
 633
 634      // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
 635      hash_table_insert(file_hash, file_name, owning_pkg);
 636      if (old_owning_pkg) {
 637           str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 638           /* mark this package to have its filelist written */
 639           old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 640           owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 641      }
 642      return 0;
 643 }
 644
 645