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 int pkg_hash_init(const char *name, hash_table_t *hash, int len)
  51 {
  52   return hash_table_init(name, hash, len);
  53 }
  54
  55 void free_pkgs (const char *key, void *entry, void *data)
  56 {
  57   int i;
  58   abstract_pkg_t *ab_pkg;
  59
  60   /* each entry in the hash table is an abstract package, which contains a list
  61    * of packages that provide the abstract package */
  62
  63   ab_pkg = (abstract_pkg_t*) entry;
  64
  65   if (ab_pkg->pkgs)
  66   {
  67     for (i = 0; i < ab_pkg->pkgs->len; i++)
  68     {
  69       pkg_deinit (ab_pkg->pkgs->pkgs[i]);
  70       free (ab_pkg->pkgs->pkgs[i]);
  71     }
  72   }
  73
  74   abstract_pkg_vec_free (ab_pkg->provided_by);
  75   abstract_pkg_vec_free (ab_pkg->replaced_by);
  76   pkg_vec_free (ab_pkg->pkgs);
  77   free (ab_pkg->depended_upon_by);
  78   free (ab_pkg->name);
  79   free (ab_pkg);
  80 }
  81
  82 void pkg_hash_deinit(hash_table_t *hash)
  83 {
  84   hash_table_foreach (hash, free_pkgs, NULL);
  85   hash_table_deinit(hash);
  86 }
  87
  88
  89 /* Find the default arch for a given package status file if none is given. */
  90 static char *pkg_get_default_arch(opkg_conf_t *conf)
  91 {
  92      nv_pair_list_elt_t *l;
  93      char *def_arch = HOST_CPU_STR;             /* Default arch */
  94      int def_prio = 0;                          /* Other archs override this */
  95
  96      list_for_each_entry(l , &conf->arch_list.head, node) {
  97           nv_pair_t *nv = (nv_pair_t *)l->data;
  98           int priority = strtol(nv->value, NULL, 0);
  99
 100           /* Check if this arch has higher priority, and is valid */
 101           if ((priority > def_prio) &&
 102               (strcmp(nv->name, "all")) && (strcmp(nv->name, "noarch"))) {
 103                /* Our new default */
 104                def_prio = priority;
 105                def_arch = nv->name;
 106           }
 107      }
 108
 109      return strdup(def_arch);
 110 }
 111
 112 int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
 113                            pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 114 {
 115      hash_table_t *hash = &conf->pkg_hash;
 116      char **raw;
 117      char **raw_start;
 118      pkg_t *pkg;
 119
 120      raw = raw_start = read_raw_pkgs_from_file(file_name);
 121      if (!raw)
 122         return -ENOMEM;
 123
 124      while(*raw){         /* don't worry, we'll increment raw in the parsing function */
 125           pkg = pkg_new();
 126           if (!pkg)
 127                return -ENOMEM;
 128
 129           if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
 130                if (!pkg->architecture) {
 131                     char *version_str = pkg_version_str_alloc(pkg);
 132                     pkg->architecture = pkg_get_default_arch(conf);
 133                     opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
 134                                  pkg->name, version_str, pkg->architecture);
 135                     free(version_str);
 136                }
 137                hash_insert_pkg(hash, pkg, is_status_file,conf);
 138           } else {
 139                pkg_deinit (pkg);
 140                free(pkg);
 141           }
 142      }
 143
 144      /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
 145         memory after read_raw_pkgs_from_file */
 146      raw = raw_start;
 147      while (*raw) {
 148           free(*raw++);
 149      }
 150      free(raw_start);
 151      return 0;
 152 }
 153
 154 abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
 155 {
 156   return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
 157 }
 158
 159 abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
 160 {
 161     abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
 162     if (apkg)
 163        return NULL;
 164     return apkg->provided_by;
 165 }
 166
 167
 168 pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg,
 169                                                   int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet, int *err)
 170 {
 171      int i;
 172      int nprovides = 0;
 173      int nmatching = 0;
 174      pkg_vec_t *matching_pkgs = pkg_vec_alloc();
 175      abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
 176      abstract_pkg_vec_t *provided_apkg_vec;
 177      abstract_pkg_t **provided_apkgs;
 178      abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
 179      pkg_t *latest_installed_parent = NULL;
 180      pkg_t *latest_matching = NULL;
 181      pkg_t *held_pkg = NULL;
 182      pkg_t *good_pkg_by_name = NULL;
 183
 184      if (err)
 185        *err = 0;
 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                 if (vec->len > 0 && matching_pkgs->len < 1)
 255                 {
 256                   opkg_message (conf, OPKG_ERROR, "Packages were found, but none compatible with the architectures configured\n");
 257                   if (err)
 258                     *err = OPKG_PKG_HAS_NO_AVAILABLE_ARCH;
 259                 }
 260           }
 261      }
 262
 263      if (matching_pkgs->len > 1)
 264           pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
 265      if (matching_apkgs->len > 1)
 266           abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 267
 268 /* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
 269    needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
 270 /* The problem is what to do when there are more than a mathing package, with the same name and several version ?
 271    Until now I always got the latest, but that breaks the downgrade option.
 272    If I stop at the first one, I would probably miss the new ones
 273    Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
 274    or from a Packages feed.
 275    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*/
 276 /*Pigi*/
 277
 278      for (i = 0; i < matching_pkgs->len; i++) {
 279           pkg_t *matching = matching_pkgs->pkgs[i];
 280           if (constraint_fcn(matching, cdata)) {  /* We found it */
 281              opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
 282              good_pkg_by_name = matching;
 283              if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
 284                 break;
 285           }
 286      }
 287
 288
 289      for (i = 0; i < matching_pkgs->len; i++) {
 290           pkg_t *matching = matching_pkgs->pkgs[i];
 291           latest_matching = matching;
 292           if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
 293                latest_installed_parent = matching;
 294           if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
 295                if (held_pkg)
 296                     opkg_message(conf, OPKG_NOTICE, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
 297                                  held_pkg->name, matching->name);
 298                held_pkg = matching;
 299           }
 300      }
 301
 302      if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
 303           opkg_message(conf, OPKG_ERROR, "Package=%s, %d matching providers\n",
 304                        apkg->name, matching_apkgs->len);
 305           for (i = 0; i < matching_apkgs->len; i++) {
 306               abstract_pkg_t *matching = matching_apkgs->pkgs[i];
 307               opkg_message(conf, OPKG_ERROR, "    %s\n", matching->name);
 308           }
 309           opkg_message(conf, OPKG_ERROR, "Please select one with opkg install or opkg flag prefer\n");
 310      }
 311
 312      if (matching_apkgs->len > 1 && conf->verbosity > 1) {
 313           opkg_message(conf, OPKG_NOTICE, "%s: for apkg=%s, %d matching pkgs\n",
 314                        __FUNCTION__, apkg->name, matching_pkgs->len);
 315           for (i = 0; i < matching_pkgs->len; i++) {
 316                pkg_t *matching = matching_pkgs->pkgs[i];
 317                opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
 318                             matching->name, matching->version, matching->architecture);
 319           }
 320      }
 321
 322      nmatching = matching_apkgs->len;
 323
 324      pkg_vec_free(matching_pkgs);
 325      abstract_pkg_vec_free(matching_apkgs);
 326      abstract_pkg_vec_free(providers);
 327
 328      if (good_pkg_by_name) {   /* We found a good candidate, we will install it */
 329           return good_pkg_by_name;
 330      }
 331      if (held_pkg) {
 332           opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
 333           return held_pkg;
 334      }
 335      if (latest_installed_parent) {
 336           opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
 337           return latest_installed_parent;
 338      }
 339      if (nmatching > 1) {
 340           opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
 341           return NULL;
 342      }
 343      if (latest_matching) {
 344           opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
 345                        latest_matching->name, latest_matching->version, latest_matching->architecture);
 346           return latest_matching;
 347      }
 348      return NULL;
 349 }
 350
 351 static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
 352 {
 353      const char *name = (const char *)cdata;
 354      if (strcmp(pkg->name, name) == 0)
 355           return 1;
 356      else
 357           return 0;
 358 }
 359
 360 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name, int *err)
 361 {
 362      hash_table_t *hash = &conf->pkg_hash;
 363      abstract_pkg_t *apkg = NULL;
 364      pkg_t *ret;
 365
 366      if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
 367           return NULL;
 368
 369      ret = pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0, err);
 370
 371      return ret;
 372 }
 373
 374
 375 pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash,
 376                                        const char *pkg_name,
 377                                        const char * version)
 378 {
 379     pkg_vec_t * vec;
 380     register int i;
 381     char *version_str = NULL;
 382
 383     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
 384         return NULL;
 385
 386     for(i = 0; i < vec->len; i++) {
 387         version_str = pkg_version_str_alloc(vec->pkgs[i]);
 388         if(!strcmp(version_str, version)) {
 389             free(version_str);
 390             break;
 391         }
 392         free(version_str);
 393     }
 394
 395     if(i == vec->len)
 396         return NULL;
 397
 398     return vec->pkgs[i];
 399 }
 400
 401 pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
 402                                              const char *pkg_name,
 403                                              pkg_dest_t *dest)
 404 {
 405     pkg_vec_t * vec;
 406     register int i;
 407
 408     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
 409         return NULL;
 410     }
 411
 412     for(i = 0; i < vec->len; i++)
 413         if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
 414             return vec->pkgs[i];
 415         }
 416     return NULL;
 417 }
 418
 419 pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
 420                                         const char *pkg_name)
 421 {
 422     pkg_vec_t * vec;
 423     register int i;
 424
 425     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
 426         return NULL;
 427     }
 428
 429     for(i = 0; i < vec->len; i++)
 430         if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
 431             return vec->pkgs[i];
 432         }
 433
 434     return NULL;
 435 }
 436
 437 pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
 438 {
 439     abstract_pkg_t * ab_pkg;
 440
 441     if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
 442        return NULL;
 443     }
 444
 445     if (ab_pkg->pkgs) {
 446       return ab_pkg->pkgs;
 447     } else if (ab_pkg->provided_by) {
 448       abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 449       if (abpkg != NULL){
 450           return abpkg->pkgs;
 451       } else {
 452           return ab_pkg->pkgs;
 453       }
 454     } else {
 455       return NULL;
 456     }
 457 }
 458
 459
 460 static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 461 {
 462   int j;
 463   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 464   pkg_vec_t *all = (pkg_vec_t *)data;
 465   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 466   if (pkg_vec) {
 467     for (j = 0; j < pkg_vec->len; j++) {
 468       pkg_t *pkg = pkg_vec->pkgs[j];
 469       pkg_vec_insert(all, pkg);
 470     }
 471   }
 472 }
 473
 474 void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
 475 {
 476     hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
 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 }
 498
 499 static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
 500 {
 501   int i;
 502   pkg_t *pkg;
 503   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 504   opkg_conf_t *conf = (opkg_conf_t *)data;
 505   abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
 506   fprintf(stdout, "%s\n", ab_pkg->name);
 507   i = 0;
 508   if (dependents != NULL)
 509     while (dependents [i] != NULL)
 510       printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
 511   dependents = ab_pkg->provided_by->pkgs;
 512   i = 0;
 513   if (dependents != NULL)
 514     while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
 515       printf ("\tprovided by - %s\n", dependents [i ++]->name);
 516   pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name, NULL);
 517   if (pkg) {
 518     i = 0;
 519     while (i < pkg->depends_count)
 520       printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);
 521   }
 522 }
 523 void pkg_hash_dump(hash_table_t *hash, void *data)
 524 {
 525
 526   printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
 527   hash_table_foreach(hash, pkg_hash_dump_helper, data);
 528   printf ("\n+=+%s+=+\n\n", __FUNCTION__);
 529 }
 530
 531 abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 532 {
 533   abstract_pkg_t * ab_pkg;
 534
 535   if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
 536     ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
 537
 538   return ab_pkg;
 539 }
 540
 541 pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
 542 {
 543      abstract_pkg_t * ab_pkg;
 544      int arch_priority;
 545
 546      if(!pkg)
 547           return pkg;
 548
 549      arch_priority = pkg->arch_priority;
 550
 551      if (buildDepends(hash, pkg)<0){
 552         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 553         return NULL;
 554      }
 555      ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
 556
 557      if (set_status) {
 558           if (pkg->state_status == SS_INSTALLED) {
 559                ab_pkg->state_status = SS_INSTALLED;
 560           } else if (pkg->state_status == SS_UNPACKED) {
 561                ab_pkg->state_status = SS_UNPACKED;
 562           }
 563      }
 564
 565      if(!ab_pkg->pkgs)
 566           ab_pkg->pkgs = pkg_vec_alloc();
 567
 568      /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
 569      pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
 570      pkg->parent = ab_pkg;
 571
 572      if (buildProvides(hash, ab_pkg, pkg)<0){
 573         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 574         return NULL;
 575      }
 576      /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
 577      if (buildConflicts(hash, ab_pkg, pkg)<0){
 578         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 579         return NULL;
 580      }
 581      if (buildReplaces(hash, ab_pkg, pkg)<0) {
 582         fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
 583         return NULL;
 584      }
 585
 586      buildDependedUponBy(pkg, ab_pkg);
 587      return pkg;
 588 }
 589
 590 /*
 591  * this will assume that we've already determined that
 592  * the abstract pkg doesn't exist, 'cause we should know these things...
 593  */
 594 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 595 {
 596   abstract_pkg_t * ab_pkg;
 597
 598   ab_pkg = abstract_pkg_new();
 599   if (ab_pkg == NULL) { return NULL; }
 600
 601   ab_pkg->name = strdup(pkg_name);
 602   hash_table_insert(hash, pkg_name, ab_pkg);
 603
 604   return ab_pkg;
 605 }
 606
 607
 608 pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
 609 {
 610      hash_table_t *file_hash = &conf->file_hash;
 611
 612      return hash_table_get(file_hash, file_name);
 613 }
 614
 615 int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
 616 {
 617      hash_table_t *file_hash = &conf->file_hash;
 618      pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
 619      int file_name_len = strlen(file_name);
 620
 621      if (file_name[file_name_len -1] == '/')
 622           return 0;
 623
 624      if (conf->offline_root) {
 625           int len = strlen(conf->offline_root);
 626           if (strncmp(file_name, conf->offline_root, len) == 0) {
 627                file_name += len;
 628           }
 629      }
 630
 631      // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
 632      hash_table_insert(file_hash, file_name, owning_pkg);
 633      if (old_owning_pkg) {
 634           pkg_get_installed_files(old_owning_pkg);
 635           str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 636           pkg_free_installed_files(old_owning_pkg);
 637           /* mark this package to have its filelist written */
 638           old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 639           owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 640
 641      }
 642      return 0;
 643 }
 644
 645