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,
111 path = strjoin(unit_path, "/", name, suffix, NULL);
115 if (u->manager->unit_path_cache &&
116 !set_get(u->manager->unit_path_cache, path))
119 r = iterate_dir(u, path, dependency, strv);
127 /* Also try the template dir */
129 template = unit_name_template(name);
133 path = strjoin(unit_path, "/", template, suffix, NULL);
139 if (u->manager->unit_path_cache &&
140 !set_get(u->manager->unit_path_cache, path))
143 r = iterate_dir(u, path, dependency, strv);
153 char **unit_find_dropin_paths(Unit *u) {
154 _cleanup_strv_free_ char **strv = NULL;
155 char **configs = NULL;
162 SET_FOREACH(t, u->names, i) {
165 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
166 /* This loads the drop-in config snippets */
167 r = process_dir(u, *p, t, ".d", _UNIT_DEPENDENCY_INVALID, &strv);
173 if (strv_isempty(strv))
176 r = conf_files_list_strv(&configs, ".conf", NULL, (const char**) strv);
178 log_error("Failed to get list of configuration files: %s", strerror(-r));
186 int unit_load_dropin(Unit *u) {
193 /* Load dependencies from supplementary drop-in directories */
195 SET_FOREACH(t, u->names, i) {
198 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
199 r = process_dir(u, *p, t, ".wants", UNIT_WANTS, NULL);
203 r = process_dir(u, *p, t, ".requires", UNIT_REQUIRES, NULL);
209 u->dropin_paths = unit_find_dropin_paths(u);
210 if (! u->dropin_paths)
213 STRV_FOREACH(f, u->dropin_paths) {
214 r = config_parse(u->id, *f, NULL,
215 UNIT_VTABLE(u)->sections, config_item_perf_lookup,
216 (void*) load_fragment_gperf_lookup, false, false, u);
221 u->dropin_mtime = now(CLOCK_REALTIME);