1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "load-dropin.h"
29 #include "unit-name.h"
30 #include "conf-parser.h"
31 #include "load-fragment.h"
32 #include "conf-files.h"
34 static int iterate_dir(
37 UnitDependency dependency,
40 _cleanup_closedir_ DIR *d = NULL;
46 /* The config directories are special, since the order of the
49 r = strv_extend(strv, path);
66 _cleanup_free_ char *f = NULL;
71 if (!de && errno != 0) {
73 log_error("Failed to read directory %s: %s", path, strerror(k));
80 if (ignore_file(de->d_name))
83 f = strjoin(path, "/", de->d_name, NULL);
87 r = unit_add_dependency_by_name(u, dependency, de->d_name, f, true);
89 log_error("Cannot add dependency %s to %s, ignoring: %s", de->d_name, u->id, strerror(-r));
95 static int process_dir(
97 const char *unit_path,
100 UnitDependency dependency,
103 _cleanup_free_ char *path = NULL;
111 path = strjoin(unit_path, "/", name, suffix, NULL);
115 if (!u->manager->unit_path_cache || set_get(u->manager->unit_path_cache, path)) {
116 r = iterate_dir(u, path, dependency, strv);
122 _cleanup_free_ char *template = NULL, *p = NULL;
123 /* Also try the template dir */
125 template = unit_name_template(name);
129 p = strjoin(unit_path, "/", template, suffix, NULL);
133 if (!u->manager->unit_path_cache || set_get(u->manager->unit_path_cache, p)) {
134 r = iterate_dir(u, p, dependency, strv);
143 char **unit_find_dropin_paths(Unit *u) {
144 _cleanup_strv_free_ char **strv = NULL;
145 char **configs = NULL;
152 SET_FOREACH(t, u->names, i) {
155 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
156 /* This loads the drop-in config snippets */
157 r = process_dir(u, *p, t, ".d", _UNIT_DEPENDENCY_INVALID, &strv);
163 if (strv_isempty(strv))
166 r = conf_files_list_strv(&configs, ".conf", NULL, (const char**) strv);
168 log_error("Failed to get list of configuration files: %s", strerror(-r));
176 int unit_load_dropin(Unit *u) {
183 /* Load dependencies from supplementary drop-in directories */
185 SET_FOREACH(t, u->names, i) {
188 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
189 r = process_dir(u, *p, t, ".wants", UNIT_WANTS, NULL);
193 r = process_dir(u, *p, t, ".requires", UNIT_REQUIRES, NULL);
199 u->dropin_paths = unit_find_dropin_paths(u);
200 if (! u->dropin_paths)
203 STRV_FOREACH(f, u->dropin_paths) {
204 r = config_parse(u->id, *f, NULL,
205 UNIT_VTABLE(u)->sections, config_item_perf_lookup,
206 (void*) load_fragment_gperf_lookup, false, false, u);
211 u->dropin_mtime = now(CLOCK_REALTIME);