-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <stdio.h>
#include "user-util.h"
#include "util.h"
-static int user_runtime_dir(char **ret, const char *suffix) {
+int xdg_user_runtime_dir(char **ret, const char *suffix) {
const char *e;
char *j;
return 0;
}
-static int user_config_dir(char **ret, const char *suffix) {
+int xdg_user_config_dir(char **ret, const char *suffix) {
const char *e;
char *j;
int r;
return 0;
}
-static int user_data_dir(char **ret, const char *suffix) {
+int xdg_user_data_dir(char **ret, const char *suffix) {
const char *e;
char *j;
int r;
return 1;
}
-static char** user_dirs(
- const char *persistent_config,
- const char *runtime_config,
- const char *generator,
- const char *generator_early,
- const char *generator_late,
- const char *transient,
- const char *persistent_control,
- const char *runtime_control) {
-
- const char * const config_unit_paths[] = {
- USER_CONFIG_UNIT_PATH,
- "/etc/systemd/user",
- NULL
- };
-
- const char * const data_unit_paths[] = {
- "/usr/local/lib/systemd/user",
- "/usr/local/share/systemd/user",
- USER_DATA_UNIT_PATH,
- "/usr/lib/systemd/user",
- "/usr/share/systemd/user",
- NULL
- };
-
- _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
- _cleanup_free_ char *data_home = NULL;
- _cleanup_strv_free_ char **res = NULL;
- const char *e;
- char **tmp;
- int r;
-
+static const char* const user_data_unit_paths[] = {
+ "/usr/local/lib/systemd/user",
+ "/usr/local/share/systemd/user",
+ USER_DATA_UNIT_PATH,
+ "/usr/lib/systemd/user",
+ "/usr/share/systemd/user",
+ NULL
+};
+
+static const char* const user_config_unit_paths[] = {
+ USER_CONFIG_UNIT_PATH,
+ "/etc/systemd/user",
+ NULL
+};
+
+int xdg_user_dirs(char ***ret_config_dirs, char ***ret_data_dirs) {
/* Implement the mechanisms defined in
*
* http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
* want to encourage that distributors ship their unit files
* as data, and allow overriding as configuration.
*/
+ const char *e;
+ _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
e = getenv("XDG_CONFIG_DIRS");
if (e) {
config_dirs = strv_split(e, ":");
if (!config_dirs)
- return NULL;
+ return -ENOMEM;
}
- r = user_data_dir(&data_home, "/systemd/user");
- if (r < 0 && r != -ENXIO)
- return NULL;
-
e = getenv("XDG_DATA_DIRS");
if (e)
data_dirs = strv_split(e, ":");
"/usr/share",
NULL);
if (!data_dirs)
+ return -ENOMEM;
+
+ *ret_config_dirs = config_dirs;
+ *ret_data_dirs = data_dirs;
+ config_dirs = data_dirs = NULL;
+ return 0;
+}
+
+static char** user_dirs(
+ const char *persistent_config,
+ const char *runtime_config,
+ const char *global_persistent_config,
+ const char *global_runtime_config,
+ const char *generator,
+ const char *generator_early,
+ const char *generator_late,
+ const char *transient,
+ const char *persistent_control,
+ const char *runtime_control) {
+
+ _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
+ _cleanup_free_ char *data_home = NULL;
+ _cleanup_strv_free_ char **res = NULL;
+ int r;
+
+ r = xdg_user_dirs(&config_dirs, &data_dirs);
+ if (r < 0)
+ return NULL;
+
+ r = xdg_user_data_dir(&data_home, "/systemd/user");
+ if (r < 0 && r != -ENXIO)
return NULL;
/* Now merge everything we found. */
if (strv_extend(&res, persistent_config) < 0)
return NULL;
- if (strv_extend_strv(&res, (char**) config_unit_paths, false) < 0)
+ /* global config has lower priority than the user config of the same type */
+ if (strv_extend(&res, global_persistent_config) < 0)
+ return NULL;
+
+ if (strv_extend_strv(&res, (char**) user_config_unit_paths, false) < 0)
return NULL;
if (strv_extend(&res, runtime_config) < 0)
return NULL;
+ if (strv_extend(&res, global_runtime_config) < 0)
+ return NULL;
+
if (strv_extend(&res, generator) < 0)
return NULL;
if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0)
return NULL;
- if (strv_extend_strv(&res, (char**) data_unit_paths, false) < 0)
+ if (strv_extend_strv(&res, (char**) user_data_unit_paths, false) < 0)
return NULL;
if (strv_extend(&res, generator_late) < 0)
if (path_strv_make_absolute_cwd(res) < 0)
return NULL;
- tmp = res;
- res = NULL;
+ return TAKE_PTR(res);
+}
+
+bool path_is_user_data_dir(const char *path) {
+ assert(path);
+
+ return strv_contains((char**) user_data_unit_paths, path);
+}
+
+bool path_is_user_config_dir(const char *path) {
+ assert(path);
- return tmp;
+ return strv_contains((char**) user_config_unit_paths, path);
}
static int acquire_generator_dirs(
char **generator_early,
char **generator_late) {
- _cleanup_(rmdir_and_freep) char *t = NULL;
_cleanup_free_ char *x = NULL, *y = NULL, *z = NULL;
const char *prefix;
if (tempdir)
prefix = tempdir;
-
else if (scope == UNIT_FILE_SYSTEM)
prefix = "/run/systemd";
-
- else if (scope == UNIT_FILE_USER) {
+ else {
+ /* UNIT_FILE_USER */
const char *e;
e = getenv("XDG_RUNTIME_DIR");
if (!z)
return -ENOMEM;
- *generator = x;
- *generator_early = y;
- *generator_late = z;
+ *generator = TAKE_PTR(x);
+ *generator_early = TAKE_PTR(y);
+ *generator_late = TAKE_PTR(z);
- x = y = z = NULL;
return 0;
}
else if (scope == UNIT_FILE_SYSTEM)
transient = strdup("/run/systemd/transient");
else
- return user_runtime_dir(ret, "/systemd/transient");
+ return xdg_user_runtime_dir(ret, "/systemd/transient");
if (!transient)
return -ENOMEM;
break;
case UNIT_FILE_USER:
- r = user_config_dir(&a, "/systemd/user");
+ r = xdg_user_config_dir(&a, "/systemd/user");
if (r < 0 && r != -ENXIO)
return r;
- r = user_runtime_dir(runtime, "/systemd/user");
+ r = xdg_user_runtime_dir(runtime, "/systemd/user");
if (r < 0) {
if (r != -ENXIO)
return r;
*runtime = NULL;
}
- *persistent = a;
- a = NULL;
+ *persistent = TAKE_PTR(a);
return 0;
if (!a || !b)
return -ENOMEM;
- *persistent = a;
- *runtime = b;
- a = b = NULL;
+ *persistent = TAKE_PTR(a);
+ *runtime = TAKE_PTR(b);
return 0;
}
if (!b)
return -ENOMEM;
- *runtime = b;
- b = NULL;
+ *runtime = TAKE_PTR(b);
break;
}
case UNIT_FILE_USER:
- r = user_config_dir(&a, "/systemd/system.control");
+ r = xdg_user_config_dir(&a, "/systemd/user.control");
if (r < 0 && r != -ENXIO)
return r;
- r = user_runtime_dir(runtime, "/systemd/system.control");
+ r = xdg_user_runtime_dir(runtime, "/systemd/user.control");
if (r < 0) {
if (r != -ENXIO)
return r;
assert_not_reached("Hmm, unexpected scope value.");
}
- *persistent = a;
- a = NULL;
+ *persistent = TAKE_PTR(a);
return 0;
}
_cleanup_free_ char
*root = NULL,
*persistent_config = NULL, *runtime_config = NULL,
+ *global_persistent_config = NULL, *global_runtime_config = NULL,
*generator = NULL, *generator_early = NULL, *generator_late = NULL,
*transient = NULL,
*persistent_control = NULL, *runtime_control = NULL;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
- if (!isempty(root_dir) && !path_equal(root_dir, "/")) {
+#if HAVE_SPLIT_USR
+ flags |= LOOKUP_PATHS_SPLIT_USR;
+#endif
+
+ if (!empty_or_root(root_dir)) {
if (scope == UNIT_FILE_USER)
return -EINVAL;
if (r < 0)
return r;
+ if (scope == UNIT_FILE_USER) {
+ r = acquire_config_dirs(UNIT_FILE_GLOBAL, &global_persistent_config, &global_runtime_config);
+ if (r < 0)
+ return r;
+ }
+
if ((flags & LOOKUP_PATHS_EXCLUDE_GENERATED) == 0) {
/* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */
r = acquire_generator_dirs(scope, tempdir,
&generator, &generator_early, &generator_late);
- if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO)
+ if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO))
return r;
}
/* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */
r = acquire_transient_dir(scope, tempdir, &transient);
- if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO)
+ if (r < 0 && !IN_SET(r, -EOPNOTSUPP, -ENXIO))
return r;
/* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_control to NULL */
"/usr/local/lib/systemd/system",
SYSTEM_DATA_UNIT_PATH,
"/usr/lib/systemd/system",
-#ifdef HAVE_SPLIT_USR
- "/lib/systemd/system",
-#endif
+ STRV_IFNOTNULL(flags & LOOKUP_PATHS_SPLIT_USR ? "/lib/systemd/system" : NULL),
STRV_IFNOTNULL(generator_late),
NULL);
break;
runtime_config,
"/run/systemd/user",
STRV_IFNOTNULL(generator),
- "/usr/local/lib/systemd/user",
"/usr/local/share/systemd/user",
+ "/usr/share/systemd/user",
+ "/usr/local/lib/systemd/user",
USER_DATA_UNIT_PATH,
"/usr/lib/systemd/user",
- "/usr/share/systemd/user",
STRV_IFNOTNULL(generator_late),
NULL);
break;
case UNIT_FILE_USER:
add = user_dirs(persistent_config, runtime_config,
+ global_persistent_config, global_runtime_config,
generator, generator_early, generator_late,
transient,
- persistent_config, runtime_control);
+ persistent_control, runtime_control);
break;
default:
r = strv_extend_strv(&paths, add, true);
if (r < 0)
return r;
- } else {
+ } else
/* Small optimization: if paths is NULL (and it usually is), we can simply assign 'add' to it,
* and don't have to copy anything */
- paths = add;
- add = NULL;
- }
+ paths = TAKE_PTR(add);
}
r = patch_root_prefix(&persistent_config, root);
p->search_path = strv_uniq(paths);
paths = NULL;
- p->persistent_config = persistent_config;
- p->runtime_config = runtime_config;
- persistent_config = runtime_config = NULL;
-
- p->generator = generator;
- p->generator_early = generator_early;
- p->generator_late = generator_late;
- generator = generator_early = generator_late = NULL;
+ p->persistent_config = TAKE_PTR(persistent_config);
+ p->runtime_config = TAKE_PTR(runtime_config);
- p->transient = transient;
- transient = NULL;
+ p->generator = TAKE_PTR(generator);
+ p->generator_early = TAKE_PTR(generator_early);
+ p->generator_late = TAKE_PTR(generator_late);
- p->persistent_control = persistent_control;
- p->runtime_control = runtime_control;
- persistent_control = runtime_control = NULL;
+ p->transient = TAKE_PTR(transient);
- p->root_dir = root;
- root = NULL;
+ p->persistent_control = TAKE_PTR(persistent_control);
+ p->runtime_control = TAKE_PTR(runtime_control);
- p->temporary_dir = tempdir;
- tempdir = NULL;
+ p->root_dir = TAKE_PTR(root);
+ p->temporary_dir = TAKE_PTR(tempdir);
return 0;
}
int lookup_paths_reduce(LookupPaths *p) {
_cleanup_free_ struct stat *stats = NULL;
size_t n_stats = 0, allocated = 0;
- unsigned c = 0;
+ size_t c = 0;
int r;
assert(p);
/* Drop duplicates and non-existing directories from the search path. We figure out whether two directories are
- * the same by comparing their device and inode numbers. Note one special tweak: when we have a root path set,
- * we do not follow symlinks when retrieving them, because the kernel wouldn't take the root prefix into
- * account when following symlinks. When we have no root path set this restriction does not apply however. */
+ * the same by comparing their device and inode numbers. */
if (!p->search_path)
return 0;
while (p->search_path[c]) {
struct stat st;
- unsigned k;
+ size_t k;
- if (p->root_dir)
- r = lstat(p->search_path[c], &st);
- else
- r = stat(p->search_path[c], &st);
- if (r < 0) {
- if (errno == ENOENT)
- goto remove_item;
+ /* Never strip the transient and control directories from the path */
+ if (path_equal_ptr(p->search_path[c], p->transient) ||
+ path_equal_ptr(p->search_path[c], p->persistent_control) ||
+ path_equal_ptr(p->search_path[c], p->runtime_control)) {
+ c++;
+ continue;
+ }
+ r = chase_symlinks_and_stat(p->search_path[c], p->root_dir, 0, NULL, &st);
+ if (r == -ENOENT)
+ goto remove_item;
+ if (r < 0) {
/* If something we don't grok happened, let's better leave it in. */
- log_debug_errno(errno, "Failed to stat %s: %m", p->search_path[c]);
+ log_debug_errno(r, "Failed to chase and stat %s: %m", p->search_path[c]);
c++;
continue;
}
- for (k = 0; k < n_stats; k++) {
+ for (k = 0; k < n_stats; k++)
if (stats[k].st_dev == st.st_dev &&
stats[k].st_ino == st.st_ino)
break;
- }
if (k < n_stats) /* Is there already an entry with the same device/inode? */
goto remove_item;
/* Flush the generated unit files in full */
if (p->generator)
- (void) rm_rf(p->generator, REMOVE_ROOT);
+ (void) rm_rf(p->generator, REMOVE_ROOT|REMOVE_PHYSICAL);
if (p->generator_early)
- (void) rm_rf(p->generator_early, REMOVE_ROOT);
+ (void) rm_rf(p->generator_early, REMOVE_ROOT|REMOVE_PHYSICAL);
if (p->generator_late)
- (void) rm_rf(p->generator_late, REMOVE_ROOT);
+ (void) rm_rf(p->generator_late, REMOVE_ROOT|REMOVE_PHYSICAL);
if (p->temporary_dir)
- (void) rm_rf(p->temporary_dir, REMOVE_ROOT);
+ (void) rm_rf(p->temporary_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
}
char **generator_binary_paths(UnitFileScope scope) {
projects / thirdparty / systemd.git / blobdiff