libopkg/opkg_upgrade.c

   1 /* opkg_upgrade.c - the opkg package management system
   2
   3    Carl D. Worth
   4    Copyright (C) 2001 University of Southern California
   5
   6    Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17 */
  18
  19 #include "includes.h"
  20 #include "opkg_install.h"
  21 #include "opkg_message.h"
  22
  23 int opkg_upgrade_pkg(opkg_conf_t *conf, pkg_t *old)
  24 {
  25      pkg_t *new;
  26      int cmp;
  27      char *old_version, *new_version;
  28
  29      if (old->state_flag & SF_HOLD) {
  30           opkg_message(conf, OPKG_NOTICE,
  31                        "Not upgrading package %s which is marked "
  32                        "hold (flags=%#x)\n", old->name, old->state_flag);
  33           return 0;
  34      }
  35
  36      new = pkg_hash_fetch_best_installation_candidate_by_name(conf, old->name, NULL);
  37      if (new == NULL) {
  38           old_version = pkg_version_str_alloc(old);
  39           opkg_message(conf, OPKG_NOTICE,
  40                        "Assuming locally installed package %s (%s) "
  41                        "is up to date.\n", old->name, old_version);
  42           free(old_version);
  43           return 0;
  44      }
  45
  46      old_version = pkg_version_str_alloc(old);
  47      new_version = pkg_version_str_alloc(new);
  48
  49      cmp = pkg_compare_versions(old, new);
  50      opkg_message(conf, OPKG_DEBUG,
  51                   "comparing visible versions of pkg %s:"
  52                   "\n\t%s is installed "
  53                   "\n\t%s is available "
  54                   "\n\t%d was comparison result\n",
  55                   old->name, old_version, new_version, cmp);
  56      if (cmp == 0) {
  57           opkg_message(conf, OPKG_INFO,
  58                        "Package %s (%s) installed in %s is up to date.\n",
  59                        old->name, old_version, old->dest->name);
  60           free(old_version);
  61           free(new_version);
  62           return 0;
  63      } else if (cmp > 0) {
  64           opkg_message(conf, OPKG_NOTICE,
  65                        "Not downgrading package %s on %s from %s to %s.\n",
  66                        old->name, old->dest->name, old_version, new_version);
  67           free(old_version);
  68           free(new_version);
  69           return 0;
  70      } else if (cmp < 0) {
  71           new->dest = old->dest;
  72           old->state_want = SW_DEINSTALL;
  73      }
  74
  75     free(old_version);
  76     free(new_version);
  77     new->state_flag |= SF_USER;
  78     return opkg_install_pkg(conf, new,1);
  79 }
  80
  81
  82 static void pkg_hash_check_installed_pkg_helper(const char *pkg_name, void *entry, void *data) {
  83     struct active_list * head = (struct active_list *) data;
  84     abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
  85     pkg_vec_t *pkg_vec = ab_pkg->pkgs;
  86     int j;
  87     if (pkg_vec) {
  88         for (j = 0; j < pkg_vec->len; j++) {
  89             pkg_t *pkg = pkg_vec->pkgs[j];
  90             if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
  91                 active_list_add(head, &pkg->list);
  92             }
  93         }
  94     }
  95 }
  96
  97 struct active_list * prepare_upgrade_list (opkg_conf_t *conf) {
  98     struct active_list * head = active_list_head_new();
  99     struct active_list * all = active_list_head_new();
 100     struct active_list *node=NULL;
 101
 102     /* ensure all data is valid */
 103     pkg_info_preinstall_check (conf);
 104
 105     hash_table_foreach(&conf->pkg_hash, pkg_hash_check_installed_pkg_helper, all);
 106     for (node=active_list_next(all,all); node; node = active_list_next(all, node)) {
 107         pkg_t *old, *new;
 108         int cmp;
 109
 110         old = list_entry(node, pkg_t, list);
 111         new = pkg_hash_fetch_best_installation_candidate_by_name(conf, old->name, NULL);
 112
 113         if (new == NULL)
 114             continue;
 115
 116         cmp = pkg_compare_versions(old, new);
 117
 118         if ( cmp < 0 ) {
 119            node = active_list_move_node(all, head, &old->list);
 120         }
 121     }
 122     active_list_head_delete(all);
 123     return head;
 124 }