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 #include "libbb/libbb.h"
  32
  33 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name);
  34
  35 /*
  36  * this will talk to both feeds-lists files and installed status files
  37  * example api:
  38  *
  39  * hash_table_t hash;
  40  * pkg_hash_init(name, &hash, 1000);
  41  * pkg_hash_add_from_file(<feed filename>);
  42  *
  43  * the query function is just there as a shell to prove to me that this
  44  * sort of works, but isn't far from doing something useful
  45  *
  46  * -sma, 12/21/01
  47  * modified: CDW 3 Jan. 2002
  48  */
  49
  50
  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      list_for_each_entry(l , &conf->arch_list.head, node) {
  98           nv_pair_t *nv = (nv_pair_t *)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      }
 109
 110      return xstrdup(def_arch);
 111 }
 112
 113 int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
 114                            pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
 115 {
 116         hash_table_t *hash = &conf->pkg_hash;
 117         pkg_t *pkg;
 118         FILE *fp;
 119         char *buf;
 120         const size_t len = 4096;
 121         int ret = 0;
 122
 123         fp = fopen(file_name, "r");
 124         if (fp == NULL) {
 125                 fprintf(stderr, "%s: fopen(%s): %s\n",
 126                              __FUNCTION__, file_name, strerror(errno));
 127                 return -1;
 128         }
 129
 130         buf = xmalloc(len);
 131
 132         do {
 133                 pkg = pkg_new();
 134                 pkg->src = src;
 135                 pkg->dest = dest;
 136
 137                 ret = pkg_parse_from_stream_nomalloc(pkg, fp, PFM_ALL,
 138                                 &buf, len);
 139                 if (ret) {
 140                         pkg_deinit (pkg);
 141                         free(pkg);
 142                         if (ret == -1)
 143                                 break;
 144                         continue;
 145                 }
 146
 147                 if (!pkg->architecture) {
 148                         char *version_str = pkg_version_str_alloc(pkg);
 149                         pkg->architecture = pkg_get_default_arch(conf);
 150                         opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
 151                         pkg->name, version_str, pkg->architecture);
 152                         free(version_str);
 153                 }
 154
 155                 hash_insert_pkg(hash, pkg, is_status_file, conf);
 156
 157         } while (!feof(fp));
 158
 159         free(buf);
 160         fclose(fp);
 161
 162         return ret;
 163 }
 164
 165 abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
 166 {
 167   return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
 168 }
 169
 170 abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
 171 {
 172     abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
 173     if (apkg)
 174        return NULL;
 175     return apkg->provided_by;
 176 }
 177
 178
 179 pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg,
 180                                                   int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet, int *err)
 181 {
 182      int i;
 183      int nprovides = 0;
 184      int nmatching = 0;
 185      pkg_vec_t *matching_pkgs = pkg_vec_alloc();
 186      abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
 187      abstract_pkg_vec_t *provided_apkg_vec;
 188      abstract_pkg_t **provided_apkgs;
 189      abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
 190      pkg_t *latest_installed_parent = NULL;
 191      pkg_t *latest_matching = NULL;
 192      pkg_t *priorized_matching = NULL;
 193      pkg_t *held_pkg = NULL;
 194      pkg_t *good_pkg_by_name = NULL;
 195
 196      if (err)
 197        *err = 0;
 198
 199      if (apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
 200           return NULL;
 201
 202      opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
 203
 204      provided_apkg_vec = apkg->provided_by;
 205      nprovides = provided_apkg_vec->len;
 206      provided_apkgs = provided_apkg_vec->pkgs;
 207      if (nprovides > 1)
 208           opkg_message(conf, OPKG_DEBUG, " apkg=%s nprovides=%d\n", apkg->name, nprovides);
 209
 210      /* accumulate all the providers */
 211      for (i = 0; i < nprovides; i++) {
 212           abstract_pkg_t *provider_apkg = provided_apkgs[i];
 213           opkg_message(conf, OPKG_DEBUG, " adding %s to providers\n", provider_apkg->name);
 214           abstract_pkg_vec_insert(providers, provider_apkg);
 215      }
 216      nprovides = providers->len;
 217
 218      for (i = 0; i < nprovides; i++) {
 219           abstract_pkg_t *provider_apkg = abstract_pkg_vec_get(providers, i);
 220           abstract_pkg_t *replacement_apkg = NULL;
 221           pkg_vec_t *vec;
 222
 223           if (provider_apkg->replaced_by && provider_apkg->replaced_by->len) {
 224                replacement_apkg = provider_apkg->replaced_by->pkgs[0];
 225                if (provider_apkg->replaced_by->len > 1) {
 226                     opkg_message(conf, OPKG_NOTICE, "Multiple replacers for %s, using first one (%s)\n",
 227                                  provider_apkg->name, replacement_apkg->name);
 228                }
 229           }
 230
 231           if (replacement_apkg)
 232                opkg_message(conf, OPKG_DEBUG, "   replacement_apkg=%s for provider_apkg=%s\n",
 233                             replacement_apkg->name, provider_apkg->name);
 234
 235           if (replacement_apkg && (replacement_apkg != provider_apkg)) {
 236                if (abstract_pkg_vec_contains(providers, replacement_apkg))
 237                     continue;
 238                else
 239                     provider_apkg = replacement_apkg;
 240           }
 241
 242           if (!(vec = provider_apkg->pkgs)) {
 243                opkg_message(conf, OPKG_DEBUG, "   no pkgs for provider_apkg %s\n", provider_apkg->name);
 244                continue;
 245           }
 246
 247
 248           /* now check for supported architecture */
 249           {
 250                int max_count = 0;
 251                int i;
 252
 253                /* count packages matching max arch priority and keep track of last one */
 254                for (i = 0; i < vec->len; i++) {
 255                     pkg_t *maybe = vec->pkgs[i];
 256                     opkg_message(conf, OPKG_DEBUG, "  %s arch=%s arch_priority=%d version=%s  \n",
 257                                  maybe->name, maybe->architecture, maybe->arch_priority, maybe->version);
 258                     /* We make sure not to add the same package twice. Need to search for the reason why
 259                        they show up twice sometimes. */
 260                     if ((maybe->arch_priority > 0) && (! pkg_vec_contains(matching_pkgs, maybe))) {
 261                          max_count++;
 262                          abstract_pkg_vec_insert(matching_apkgs, maybe->parent);
 263                          pkg_vec_insert(matching_pkgs, maybe);
 264                     }
 265                }
 266
 267                 if (vec->len > 0 && matching_pkgs->len < 1)
 268                 {
 269                   opkg_message (conf, OPKG_ERROR, "Packages were found, but none compatible with the architectures configured\n");
 270                   if (err)
 271                     *err = OPKG_PKG_HAS_NO_AVAILABLE_ARCH;
 272                 }
 273           }
 274      }
 275
 276      if (matching_pkgs->len > 1)
 277           pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
 278      if (matching_apkgs->len > 1)
 279           abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
 280
 281 /* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
 282    needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
 283 /* The problem is what to do when there are more than a mathing package, with the same name and several version ?
 284    Until now I always got the latest, but that breaks the downgrade option.
 285    If I stop at the first one, I would probably miss the new ones
 286    Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
 287    or from a Packages feed.
 288    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*/
 289 /*Pigi*/
 290
 291      for (i = 0; i < matching_pkgs->len; i++) {
 292           pkg_t *matching = matching_pkgs->pkgs[i];
 293           if (constraint_fcn(matching, cdata)) {  /* We found it */
 294              opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
 295              good_pkg_by_name = matching;
 296              if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
 297                 break;
 298           }
 299      }
 300
 301
 302      for (i = 0; i < matching_pkgs->len; i++) {
 303           pkg_t *matching = matching_pkgs->pkgs[i];
 304           latest_matching = matching;
 305           if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
 306                latest_installed_parent = matching;
 307           if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
 308                if (held_pkg)
 309                     opkg_message(conf, OPKG_NOTICE, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
 310                                  held_pkg->name, matching->name);
 311                held_pkg = matching;
 312           }
 313      }
 314
 315      if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
 316           int prio = 0;
 317           for (i = 0; i < matching_pkgs->len; i++) {
 318               pkg_t *matching = matching_pkgs->pkgs[i];
 319                   if (matching->arch_priority > prio) {
 320                       priorized_matching = matching;
 321                       prio = matching->arch_priority;
 322                       opkg_message(conf, OPKG_DEBUG, "Match with priority %i    %s\n", prio, matching->name);
 323                   }
 324               }
 325
 326           }
 327
 328      if (conf->verbosity >= OPKG_INFO && matching_apkgs->len > 1) {
 329           opkg_message(conf, OPKG_INFO, "%s: for apkg=%s, %d matching pkgs\n",
 330                        __FUNCTION__, apkg->name, matching_pkgs->len);
 331           for (i = 0; i < matching_pkgs->len; i++) {
 332                pkg_t *matching = matching_pkgs->pkgs[i];
 333                opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
 334                             matching->name, matching->version, matching->architecture);
 335           }
 336      }
 337
 338      nmatching = matching_apkgs->len;
 339
 340      pkg_vec_free(matching_pkgs);
 341      abstract_pkg_vec_free(matching_apkgs);
 342      abstract_pkg_vec_free(providers);
 343
 344      if (good_pkg_by_name) {   /* We found a good candidate, we will install it */
 345           return good_pkg_by_name;
 346      }
 347      if (held_pkg) {
 348           opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
 349           return held_pkg;
 350      }
 351      if (latest_installed_parent) {
 352           opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
 353           return latest_installed_parent;
 354      }
 355      if (priorized_matching) {
 356           opkg_message(conf, OPKG_INFO, "  using priorized matching %s %s %s\n",
 357                        priorized_matching->name, priorized_matching->version, priorized_matching->architecture);
 358           return priorized_matching;
 359      }
 360      if (nmatching > 1) {
 361           opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
 362           return NULL;
 363      }
 364      if (latest_matching) {
 365           opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
 366                        latest_matching->name, latest_matching->version, latest_matching->architecture);
 367           return latest_matching;
 368      }
 369      return NULL;
 370 }
 371
 372 static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
 373 {
 374      const char *name = (const char *)cdata;
 375      if (strcmp(pkg->name, name) == 0)
 376           return 1;
 377      else
 378           return 0;
 379 }
 380
 381 pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name, int *err)
 382 {
 383      hash_table_t *hash = &conf->pkg_hash;
 384      abstract_pkg_t *apkg = NULL;
 385      pkg_t *ret;
 386
 387      if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
 388           return NULL;
 389
 390      ret = pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0, err);
 391
 392      return ret;
 393 }
 394
 395
 396 pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash,
 397                                        const char *pkg_name,
 398                                        const char * version)
 399 {
 400     pkg_vec_t * vec;
 401     int i;
 402     char *version_str = NULL;
 403
 404     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
 405         return NULL;
 406
 407     for(i = 0; i < vec->len; i++) {
 408         version_str = pkg_version_str_alloc(vec->pkgs[i]);
 409         if(!strcmp(version_str, version)) {
 410             free(version_str);
 411             break;
 412         }
 413         free(version_str);
 414     }
 415
 416     if(i == vec->len)
 417         return NULL;
 418
 419     return vec->pkgs[i];
 420 }
 421
 422 pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
 423                                              const char *pkg_name,
 424                                              pkg_dest_t *dest)
 425 {
 426     pkg_vec_t * vec;
 427     int i;
 428
 429     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
 430         return NULL;
 431     }
 432
 433     for(i = 0; i < vec->len; i++)
 434         if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
 435             return vec->pkgs[i];
 436         }
 437     return NULL;
 438 }
 439
 440 pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
 441                                         const char *pkg_name)
 442 {
 443     pkg_vec_t * vec;
 444     int i;
 445
 446     if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
 447         return NULL;
 448     }
 449
 450     for(i = 0; i < vec->len; i++)
 451         if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
 452             return vec->pkgs[i];
 453         }
 454
 455     return NULL;
 456 }
 457
 458 pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
 459 {
 460     abstract_pkg_t * ab_pkg;
 461
 462     if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
 463        return NULL;
 464     }
 465
 466     if (ab_pkg->pkgs) {
 467       return ab_pkg->pkgs;
 468     } else if (ab_pkg->provided_by) {
 469       abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
 470       if (abpkg != NULL){
 471           return abpkg->pkgs;
 472       } else {
 473           return ab_pkg->pkgs;
 474       }
 475     } else {
 476       return NULL;
 477     }
 478 }
 479
 480
 481 static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
 482 {
 483   int j;
 484   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 485   pkg_vec_t *all = (pkg_vec_t *)data;
 486   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 487   if (pkg_vec) {
 488     for (j = 0; j < pkg_vec->len; j++) {
 489       pkg_t *pkg = pkg_vec->pkgs[j];
 490       pkg_vec_insert(all, pkg);
 491     }
 492   }
 493 }
 494
 495 void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
 496 {
 497     hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
 498 }
 499
 500 static void pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry, void *data)
 501 {
 502   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 503   pkg_vec_t *all = (pkg_vec_t *)data;
 504   pkg_vec_t *pkg_vec = ab_pkg->pkgs;
 505   int j;
 506   if (pkg_vec) {
 507     for (j = 0; j < pkg_vec->len; j++) {
 508       pkg_t *pkg = pkg_vec->pkgs[j];
 509       if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
 510         pkg_vec_insert(all, pkg);
 511       }
 512     }
 513   }
 514 }
 515 void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *all)
 516 {
 517     hash_table_foreach(hash, pkg_hash_fetch_all_installed_helper, all);
 518 }
 519
 520 static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
 521 {
 522   int i;
 523   pkg_t *pkg;
 524   abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
 525   opkg_conf_t *conf = (opkg_conf_t *)data;
 526   abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
 527   fprintf(stdout, "%s\n", ab_pkg->name);
 528   i = 0;
 529   if (dependents != NULL)
 530     while (dependents [i] != NULL)
 531       printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
 532   dependents = ab_pkg->provided_by->pkgs;
 533   i = 0;
 534   if (dependents != NULL)
 535     while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
 536       printf ("\tprovided by - %s\n", dependents [i ++]->name);
 537   pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name, NULL);
 538   if (pkg) {
 539     i = 0;
 540     while (i < pkg->depends_count)
 541       printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);
 542   }
 543 }
 544 void pkg_hash_dump(hash_table_t *hash, void *data)
 545 {
 546
 547   printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
 548   hash_table_foreach(hash, pkg_hash_dump_helper, data);
 549   printf ("\n+=+%s+=+\n\n", __FUNCTION__);
 550 }
 551
 552 abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 553 {
 554   abstract_pkg_t * ab_pkg;
 555
 556   if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
 557     ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
 558
 559   return ab_pkg;
 560 }
 561
 562 pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
 563 {
 564      abstract_pkg_t * ab_pkg;
 565      int arch_priority;
 566
 567      if(!pkg)
 568           return pkg;
 569
 570      arch_priority = pkg->arch_priority;
 571
 572      buildDepends(hash, pkg);
 573
 574      ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
 575
 576      if (set_status) {
 577           if (pkg->state_status == SS_INSTALLED) {
 578                ab_pkg->state_status = SS_INSTALLED;
 579           } else if (pkg->state_status == SS_UNPACKED) {
 580                ab_pkg->state_status = SS_UNPACKED;
 581           }
 582      }
 583
 584      if(!ab_pkg->pkgs)
 585           ab_pkg->pkgs = pkg_vec_alloc();
 586
 587      buildProvides(hash, ab_pkg, pkg);
 588
 589      /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
 590      buildConflicts(hash, ab_pkg, pkg);
 591
 592      buildReplaces(hash, ab_pkg, pkg);
 593
 594      buildDependedUponBy(pkg, ab_pkg);
 595
 596      /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
 597      pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
 598      pkg->parent = ab_pkg;
 599
 600      return pkg;
 601 }
 602
 603 /*
 604  * this will assume that we've already determined that
 605  * the abstract pkg doesn't exist, 'cause we should know these things...
 606  */
 607 static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
 608 {
 609   abstract_pkg_t * ab_pkg;
 610
 611   ab_pkg = abstract_pkg_new();
 612   if (ab_pkg == NULL) { return NULL; }
 613
 614   ab_pkg->name = xstrdup(pkg_name);
 615   hash_table_insert(hash, pkg_name, ab_pkg);
 616
 617   return ab_pkg;
 618 }
 619
 620
 621 pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
 622 {
 623      hash_table_t *file_hash = &conf->file_hash;
 624
 625      return hash_table_get(file_hash, file_name);
 626 }
 627
 628 int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
 629 {
 630      hash_table_t *file_hash = &conf->file_hash;
 631      pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
 632      int file_name_len = strlen(file_name);
 633
 634      if (file_name[file_name_len -1] == '/')
 635           return 0;
 636
 637      if (conf->offline_root) {
 638           int len = strlen(conf->offline_root);
 639           if (strncmp(file_name, conf->offline_root, len) == 0) {
 640                file_name += len;
 641           }
 642      }
 643
 644      // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
 645      hash_table_insert(file_hash, file_name, owning_pkg);
 646      if (old_owning_pkg) {
 647           pkg_get_installed_files(old_owning_pkg);
 648           str_list_remove_elt(old_owning_pkg->installed_files, file_name);
 649           pkg_free_installed_files(old_owning_pkg);
 650           /* mark this package to have its filelist written */
 651           old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 652           owning_pkg->state_flag |= SF_FILELIST_CHANGED;
 653
 654      }
 655      return 0;
 656 }
 657
 658