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(Unit *u, const char *path, UnitDependency dependency, char ***strv) {
35 _cleanup_closedir_ DIR *d = NULL;
41 /* The config directories are special, since the order of the
44 r = strv_extend(strv, path);
61 union dirent_storage buf;
62 _cleanup_free_ char *f = NULL;
65 k = readdir_r(d, &buf.de, &de);
67 log_error("Failed to read directory %s: %s", path, strerror(k));
74 if (ignore_file(de->d_name))
77 f = strjoin(path, "/", de->d_name, NULL);
81 r = unit_add_dependency_by_name(u, dependency, de->d_name, f, true);
83 log_error("Cannot add dependency %s to %s, ignoring: %s", de->d_name, u->id, strerror(-r));
89 static int process_dir(Unit *u, const char *unit_path, const char *name, const char *suffix, UnitDependency dependency, char ***strv) {
98 path = strjoin(unit_path, "/", name, suffix, NULL);
102 if (u->manager->unit_path_cache &&
103 !set_get(u->manager->unit_path_cache, path))
106 r = iterate_dir(u, path, dependency, strv);
114 /* Also try the template dir */
116 template = unit_name_template(name);
120 path = strjoin(unit_path, "/", template, suffix, NULL);
126 if (u->manager->unit_path_cache &&
127 !set_get(u->manager->unit_path_cache, path))
130 r = iterate_dir(u, path, dependency, strv);
140 char **unit_find_dropin_paths(Unit *u) {
143 _cleanup_strv_free_ char **strv = NULL;
144 char **configs = NULL;
149 SET_FOREACH(t, u->names, i) {
152 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
153 /* This loads the drop-in config snippets */
154 r = process_dir(u, *p, t, ".d", _UNIT_DEPENDENCY_INVALID, &strv);
160 if (!strv_isempty(strv)) {
161 r = conf_files_list_strv(&configs, ".conf", NULL, (const char**) strv);
163 log_error("Failed to get list of configuration files: %s", strerror(-r));
173 int unit_load_dropin(Unit *u) {
180 /* Load dependencies from supplementary drop-in directories */
182 SET_FOREACH(t, u->names, i) {
185 STRV_FOREACH(p, u->manager->lookup_paths.unit_path) {
186 r = process_dir(u, *p, t, ".wants", UNIT_WANTS, NULL);
190 r = process_dir(u, *p, t, ".requires", UNIT_REQUIRES, NULL);
196 u->dropin_paths = unit_find_dropin_paths(u);
197 if (! u->dropin_paths)
200 STRV_FOREACH(f, u->dropin_paths) {
201 r = config_parse(u->id, *f, NULL,
202 UNIT_VTABLE(u)->sections, config_item_perf_lookup,
203 (void*) load_fragment_gperf_lookup, false, u);
208 u->dropin_mtime = now(CLOCK_REALTIME);