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 <stdio.h>
20 #include <stdlib.h>
21
22 #include "opkg_install.h"
23 #include "opkg_upgrade.h"
24 #include "opkg_message.h"
25
opkg_upgrade_pkg(pkg_t * old)26 int opkg_upgrade_pkg(pkg_t * old)
27 {
28 pkg_t *new;
29 int cmp;
30 char *old_version, *new_version;
31
32 if (old->state_flag & SF_HOLD) {
33 opkg_msg(NOTICE, "Not upgrading package %s which is marked "
34 "hold (flags=%#x).\n", old->name, old->state_flag);
35 return 0;
36 }
37
38 new = pkg_hash_fetch_best_installation_candidate_by_name(old->name);
39 if (new == NULL) {
40 old_version = pkg_version_str_alloc(old);
41 opkg_msg(NOTICE, "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_msg(DEBUG, "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_msg(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_msg(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(new, 1);
79 }
80
81 static void
pkg_hash_check_installed_pkg_helper(const char * pkg_name,void * entry,void * data)82 pkg_hash_check_installed_pkg_helper(const char *pkg_name, void *entry,
83 void *data)
84 {
85 struct active_list *item, *head = (struct active_list *)data;
86 abstract_pkg_t *ab_pkg = (abstract_pkg_t *) entry;
87 pkg_vec_t *pkg_vec = ab_pkg->pkgs;
88 int j;
89
90 if (!pkg_vec)
91 return;
92
93 for (j = 0; j < pkg_vec->len; j++) {
94 pkg_t *pkg = pkg_vec->pkgs[j];
95 if (pkg->state_status == SS_INSTALLED
96 || pkg->state_status == SS_UNPACKED) {
97 item = active_list_head_new();
98 item->pkg = pkg;
99 active_list_add(head, item);
100 }
101 }
102 }
103
prepare_upgrade_list(void)104 struct active_list *prepare_upgrade_list(void)
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();
112
113 hash_table_foreach(&conf->pkg_hash, pkg_hash_check_installed_pkg_helper,
114 all);
115 for (node = active_list_next(all, all); node;
116 node = active_list_next(all, node)) {
117 pkg_t *old, *new;
118 int cmp;
119
120 old = node->pkg;
121 new =
122 pkg_hash_fetch_best_installation_candidate_by_name(old->
123 name);
124
125 if (new == NULL)
126 continue;
127
128 cmp = pkg_compare_versions(old, new);
129
130 if (cmp < 0) {
131 node = active_list_move_node(all, head, node);
132 }
133 }
134 active_list_head_delete(all);
135 return head;
136 }
137