1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
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 General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
31 #include "path-lookup.h"
33 int session_config_home(char **config_home) {
36 if ((e = getenv("XDG_CONFIG_HOME"))) {
37 if (asprintf(config_home, "%s/systemd/session", e) < 0)
44 if ((home = getenv("HOME"))) {
45 if (asprintf(config_home, "%s/.config/systemd/session", home) < 0)
55 static char** session_dirs(void) {
57 char *config_home = NULL, *data_home = NULL;
58 char **config_dirs = NULL, **data_dirs = NULL;
61 /* Implement the mechanisms defined in
63 * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
65 * We look in both the config and the data dirs because we
66 * want to encourage that distributors ship their unit files
67 * as data, and allow overriding as configuration.
70 if (session_config_home(&config_home) < 0)
73 home = getenv("HOME");
75 if ((e = getenv("XDG_CONFIG_DIRS")))
76 if (!(config_dirs = strv_split(e, ":")))
79 /* We don't treat /etc/xdg/systemd here as the spec
80 * suggests because we assume that that is a link to
81 * /etc/systemd/ anyway. */
83 if ((e = getenv("XDG_DATA_HOME"))) {
84 if (asprintf(&data_home, "%s/systemd/session", e) < 0)
88 if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
91 /* There is really no need for two unit dirs in $HOME,
92 * except to be fully compliant with the XDG spec. We
93 * now try to link the two dirs, so that we can
94 * minimize disk seeks a little. Further down we'll
95 * then filter out this link, if it is actually is
98 mkdir_parents(data_home, 0777);
99 (void) symlink("../../../.config/systemd/session", data_home);
102 if ((e = getenv("XDG_DATA_DIRS")))
103 data_dirs = strv_split(e, ":");
105 data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
110 /* Now merge everything we found. */
112 if (!(t = strv_append(r, config_home)))
118 if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
123 if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
129 if (!(t = strv_append(r, data_home)))
135 if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
140 if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
145 if (!strv_path_make_absolute_cwd(r))
150 strv_free(config_dirs);
152 strv_free(data_dirs);
162 int lookup_paths_init(LookupPaths *p, ManagerRunningAs running_as) {
168 /* First priority is whatever has been passed to us via env
170 if ((e = getenv("SYSTEMD_UNIT_PATH")))
171 if (!(p->unit_path = split_path_and_make_absolute(e)))
174 if (strv_isempty(p->unit_path)) {
176 /* Nothing is set, so let's figure something out. */
177 strv_free(p->unit_path);
179 if (running_as == MANAGER_SESSION) {
180 if (!(p->unit_path = session_dirs()))
183 if (!(p->unit_path = strv_new(
184 SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
185 "/usr/local/share/systemd/system",
186 "/usr/share/systemd/system",
187 SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
192 if (running_as == MANAGER_SYSTEM) {
193 /* /etc/init.d/ compatibility does not matter to users */
195 if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
196 if (!(p->sysvinit_path = split_path_and_make_absolute(e)))
199 if (strv_isempty(p->sysvinit_path)) {
200 strv_free(p->sysvinit_path);
202 if (!(p->sysvinit_path = strv_new(
203 SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
208 if ((e = getenv("SYSTEMD_SYSVRCND_PATH")))
209 if (!(p->sysvrcnd_path = split_path_and_make_absolute(e)))
212 if (strv_isempty(p->sysvrcnd_path)) {
213 strv_free(p->sysvrcnd_path);
215 if (!(p->sysvrcnd_path = strv_new(
216 SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */
223 if (!strv_path_canonicalize(p->unit_path))
226 if (p->sysvinit_path)
227 if (!strv_path_canonicalize(p->sysvinit_path))
230 if (p->sysvrcnd_path)
231 if (!strv_path_canonicalize(p->sysvrcnd_path))
234 strv_uniq(p->unit_path);
235 strv_uniq(p->sysvinit_path);
236 strv_uniq(p->sysvrcnd_path);
238 if (!strv_isempty(p->unit_path)) {
240 if (!(t = strv_join(p->unit_path, "\n\t")))
242 log_debug("Looking for unit files in:\n\t%s", t);
245 log_debug("Ignoring unit files.");
246 strv_free(p->unit_path);
250 if (!strv_isempty(p->sysvinit_path)) {
252 if (!(t = strv_join(p->sysvinit_path, "\n\t")))
255 log_debug("Looking for SysV init scripts in:\n\t%s", t);
258 log_debug("Ignoring SysV init scripts.");
259 strv_free(p->sysvinit_path);
260 p->sysvinit_path = NULL;
263 if (!strv_isempty(p->sysvrcnd_path)) {
265 if (!(t = strv_join(p->sysvrcnd_path, "\n\t")))
268 log_debug("Looking for SysV rcN.d links in:\n\t%s", t);
271 log_debug("Ignoring SysV rcN.d links.");
272 strv_free(p->sysvrcnd_path);
273 p->sysvrcnd_path = NULL;
279 void lookup_paths_free(LookupPaths *p) {
282 strv_free(p->unit_path);
283 strv_free(p->sysvinit_path);
284 strv_free(p->sysvrcnd_path);
286 p->unit_path = p->sysvinit_path = p->sysvrcnd_path = NULL;