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
  24 opkg_upgrade_pkg(opkg_conf_t *conf, pkg_t *old)
  25 {
  26      pkg_t *new;
  27      int cmp;
  28      char *old_version, *new_version;
  29
  30      if (old->state_flag & SF_HOLD) {
  31           opkg_message(conf, OPKG_NOTICE,
  32                        "Not upgrading package %s which is marked "
  33                        "hold (flags=%#x)\n", old->name, old->state_flag);
  34           return 0;
  35      }
  36
  37      new = pkg_hash_fetch_best_installation_candidate_by_name(conf, old->name, NULL);
  38      if (new == NULL) {
  39           old_version = pkg_version_str_alloc(old);
  40           opkg_message(conf, OPKG_NOTICE,
  41                        "Assuming locally installed package %s (%s) "
  42                        "is up to date.\n", old->name, old_version);
  43           free(old_version);
  44           return 0;
  45      }
  46
  47      old_version = pkg_version_str_alloc(old);
  48      new_version = pkg_version_str_alloc(new);
  49
  50      cmp = pkg_compare_versions(old, new);
  51      opkg_message(conf, OPKG_DEBUG,
  52                   "comparing visible versions of pkg %s:"
  53                   "\n\t%s is installed "
  54                   "\n\t%s is available "
  55                   "\n\t%d was comparison result\n",
  56                   old->name, old_version, new_version, cmp);
  57      if (cmp == 0) {
  58           opkg_message(conf, OPKG_INFO,
  59                        "Package %s (%s) installed in %s is up to date.\n",
  60                        old->name, old_version, old->dest->name);
  61           free(old_version);
  62           free(new_version);
  63           return 0;
  64      } else if (cmp > 0) {
  65           opkg_message(conf, OPKG_NOTICE,
  66                        "Not downgrading package %s on %s from %s to %s.\n",
  67                        old->name, old->dest->name, old_version, new_version);
  68           free(old_version);
  69           free(new_version);
  70           return 0;
  71      } else if (cmp < 0) {
  72           new->dest = old->dest;
  73           old->state_want = SW_DEINSTALL;
  74      }
  75
  76     free(old_version);
  77     free(new_version);
  78     new->state_flag |= SF_USER;
  79     return opkg_install_pkg(conf, new,1);
  80 }
  81
  82
  83 static void
  84 pkg_hash_check_installed_pkg_helper(const char *pkg_name, void *entry,
  85                 void *data)
  86 {
  87         struct active_list *head = (struct active_list *) data;
  88         abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
  89         pkg_vec_t *pkg_vec = ab_pkg->pkgs;
  90         int j;
  91
  92         if (!pkg_vec)
  93                 return;
  94
  95         for (j = 0; j < pkg_vec->len; j++) {
  96                 pkg_t *pkg = pkg_vec->pkgs[j];
  97                 if (pkg->state_status == SS_INSTALLED
  98                                 || pkg->state_status == SS_UNPACKED)
  99                         active_list_add(head, &pkg->list);
 100         }
 101 }
 102
 103 struct active_list *
 104 prepare_upgrade_list(opkg_conf_t *conf)
 105 {
 106     struct active_list *head = active_list_head_new();
 107     struct active_list *all = active_list_head_new();
 108     struct active_list *node=NULL;
 109
 110     /* ensure all data is valid */
 111     pkg_info_preinstall_check (conf);
 112
 113     hash_table_foreach(&conf->pkg_hash, pkg_hash_check_installed_pkg_helper, all);
 114     for (node=active_list_next(all,all); node; node = active_list_next(all, node)) {
 115         pkg_t *old, *new;
 116         int cmp;
 117
 118         old = list_entry(node, pkg_t, list);
 119         new = pkg_hash_fetch_best_installation_candidate_by_name(conf, old->name, NULL);
 120
 121         if (new == NULL)
 122             continue;
 123
 124         cmp = pkg_compare_versions(old, new);
 125
 126         if ( cmp < 0 ) {
 127            node = active_list_move_node(all, head, &old->list);
 128         }
 129     }
 130     active_list_head_delete(all);
 131     return head;
 132 }