+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
#include <string.h>
#include "alloc-util.h"
+#include "fileio.h"
+#include "fs-util.h"
#include "install.h"
#include "log.h"
#include "macro.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.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;
assert(ret);
if (e)
j = strappend(e, suffix);
else {
- const char *home;
+ _cleanup_free_ char *home = NULL;
- home = getenv("HOME");
- if (!home)
- return -ENXIO;
+ r = get_home_dir(&home);
+ if (r < 0)
+ return r;
- j = strjoin(home, "/.config", suffix, NULL);
+ j = strjoin(home, "/.config", suffix);
}
if (!j)
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;
assert(ret);
assert(suffix);
/* We don't treat /etc/xdg/systemd here as the spec
- * suggests because we assume that that is a link to
+ * suggests because we assume that is a link to
* /etc/systemd/ anyway. */
e = getenv("XDG_DATA_HOME");
if (e)
j = strappend(e, suffix);
else {
- const char *home;
-
- home = getenv("HOME");
- if (!home)
- return -ENXIO;
+ _cleanup_free_ char *home = NULL;
+ r = get_home_dir(&home);
+ if (r < 0)
+ return r;
- j = strjoin(home, "/.local/share", suffix, NULL);
+ j = strjoin(home, "/.local/share", suffix);
}
if (!j)
return -ENOMEM;
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
- };
-
- const char *e;
- _cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
- _cleanup_free_ char *data_home = NULL;
- _cleanup_free_ char **res = NULL;
- 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, generator_early) < 0)
return NULL;
- if (!strv_isempty(config_dirs))
- if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0)
- return NULL;
+ if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0)
+ return NULL;
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(&res, data_home) < 0)
return NULL;
- if (!strv_isempty(data_dirs))
- if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 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 tmp;
+ 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 strv_contains((char**) user_config_unit_paths, path);
}
static int acquire_generator_dirs(
UnitFileScope scope,
+ const char *tempdir,
char **generator,
char **generator_early,
char **generator_late) {
assert(generator);
assert(generator_early);
assert(generator_late);
+ assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL));
- switch (scope) {
+ if (scope == UNIT_FILE_GLOBAL)
+ return -EOPNOTSUPP;
- case UNIT_FILE_SYSTEM:
- prefix = "/run/systemd/";
- break;
+ if (tempdir)
+ prefix = tempdir;
+
+ else if (scope == UNIT_FILE_SYSTEM)
+ prefix = "/run/systemd";
- case UNIT_FILE_USER: {
+ else if (scope == UNIT_FILE_USER) {
const char *e;
e = getenv("XDG_RUNTIME_DIR");
if (!e)
return -ENXIO;
- prefix = strjoina(e, "/systemd/", NULL);
- break;
+ prefix = strjoina(e, "/systemd");
}
- case UNIT_FILE_GLOBAL:
- return -EOPNOTSUPP;
-
- default:
- assert_not_reached("Hmm, unexpected scope value.");
- }
-
- x = strappend(prefix, "generator");
+ x = strappend(prefix, "/generator");
if (!x)
return -ENOMEM;
- y = strappend(prefix, "generator.early");
+ y = strappend(prefix, "/generator.early");
if (!y)
return -ENOMEM;
- z = strappend(prefix, "generator.late");
+ z = strappend(prefix, "/generator.late");
if (!z)
return -ENOMEM;
return 0;
}
-static int acquire_transient_dir(UnitFileScope scope, char **ret) {
- assert(ret);
-
- switch (scope) {
-
- case UNIT_FILE_SYSTEM: {
- char *transient;
-
- transient = strdup("/run/systemd/transient");
- if (!transient)
- return -ENOMEM;
+static int acquire_transient_dir(
+ UnitFileScope scope,
+ const char *tempdir,
+ char **ret) {
- *ret = transient;
- return 0;
- }
+ char *transient;
- case UNIT_FILE_USER:
- return user_runtime_dir(ret, "/systemd/transient");
+ assert(ret);
+ assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL));
- case UNIT_FILE_GLOBAL:
+ if (scope == UNIT_FILE_GLOBAL)
return -EOPNOTSUPP;
- default:
- assert_not_reached("Hmm, unexpected scope value.");
- }
+ if (tempdir)
+ transient = strjoin(tempdir, "/transient");
+ else if (scope == UNIT_FILE_SYSTEM)
+ transient = strdup("/run/systemd/transient");
+ else
+ return xdg_user_runtime_dir(ret, "/systemd/transient");
+
+ if (!transient)
+ return -ENOMEM;
+ *ret = transient;
+ return 0;
}
static int acquire_config_dirs(UnitFileScope scope, char **persistent, char **runtime) {
break;
case UNIT_FILE_USER:
- r = user_config_dir(&a, "/systemd/user");
- if (r < 0)
+ r = xdg_user_config_dir(&a, "/systemd/user");
+ if (r < 0 && r != -ENXIO)
return r;
- r = user_runtime_dir(runtime, "/systemd/user");
- if (r < 0)
- return r;
+ r = xdg_user_runtime_dir(runtime, "/systemd/user");
+ if (r < 0) {
+ if (r != -ENXIO)
+ return r;
+
+ /* If XDG_RUNTIME_DIR is not set, don't consider that fatal, simply initialize the runtime
+ * directory to NULL */
+ *runtime = NULL;
+ }
- *persistent = a;
- a = NULL;
+ *persistent = TAKE_PTR(a);
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");
- if (r < 0)
+ r = xdg_user_config_dir(&a, "/systemd/user.control");
+ if (r < 0 && r != -ENXIO)
return r;
- r = user_runtime_dir(runtime, "/systemd/system.control");
- if (r < 0)
- return r;
+ r = xdg_user_runtime_dir(runtime, "/systemd/user.control");
+ if (r < 0) {
+ if (r != -ENXIO)
+ return r;
+
+ /* If XDG_RUNTIME_DIR is not set, don't consider this fatal, simply initialize the directory to
+ * NULL */
+ *runtime = NULL;
+ }
break;
assert_not_reached("Hmm, unexpected scope value.");
}
- *persistent = a;
- a = NULL;
+ *persistent = TAKE_PTR(a);
return 0;
}
LookupPathsFlags flags,
const char *root_dir) {
+ _cleanup_(rmdir_and_freep) char *tempdir = NULL;
_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;
bool append = false; /* Add items from SYSTEMD_UNIT_PATH before normal directories */
- char **l = NULL;
+ _cleanup_strv_free_ char **paths = NULL;
const char *e;
int r;
return -ENOMEM;
}
+ if (flags & LOOKUP_PATHS_TEMPORARY_GENERATED) {
+ r = mkdtemp_malloc("/tmp/systemd-temporary-XXXXXX", &tempdir);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create temporary directory: %m");
+ }
+
+ /* Note: when XDG_RUNTIME_DIR is not set this will not return -ENXIO, but simply set runtime_config to NULL */
r = acquire_config_dirs(scope, &persistent_config, &runtime_config);
- if (r < 0 && r != -ENXIO)
+ 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) {
- r = acquire_generator_dirs(scope, &generator, &generator_early, &generator_late);
- if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO)
+ /* 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 && !IN_SET(r, -EOPNOTSUPP, -ENXIO))
return r;
}
- r = acquire_transient_dir(scope, &transient);
- if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO)
+ /* Note: if XDG_RUNTIME_DIR is not set, this will fail completely with ENXIO */
+ r = acquire_transient_dir(scope, tempdir, &transient);
+ 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 */
r = acquire_control_dirs(scope, &persistent_control, &runtime_control);
- if (r < 0 && r != -EOPNOTSUPP && r != -ENXIO)
+ if (r < 0 && r != -EOPNOTSUPP)
return r;
/* First priority is whatever has been passed to us via env vars */
append = true;
}
- /* FIXME: empty components in other places should be
- * rejected. */
+ /* FIXME: empty components in other places should be rejected. */
- r = path_split_and_make_absolute(e, &l);
+ r = path_split_and_make_absolute(e, &paths);
if (r < 0)
return r;
- } else
- l = NULL;
+ }
- if (!l || append) {
+ if (!paths || append) {
/* Let's figure something out. */
_cleanup_strv_free_ char **add = NULL;
"/usr/local/lib/systemd/system",
SYSTEM_DATA_UNIT_PATH,
"/usr/lib/systemd/system",
-#ifdef HAVE_SPLIT_USR
+#if HAVE_SPLIT_USR
"/lib/systemd/system",
#endif
STRV_IFNOTNULL(generator_late),
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:
if (!add)
return -ENOMEM;
- if (l) {
- r = strv_extend_strv(&l, add, false);
+ if (paths) {
+ r = strv_extend_strv(&paths, add, true);
if (r < 0)
return r;
} else {
- l = add;
+ /* 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;
}
}
if (r < 0)
return r;
- r = patch_root_prefix_strv(l, root);
+ r = patch_root_prefix_strv(paths, root);
if (r < 0)
return -ENOMEM;
- p->search_path = strv_uniq(l);
- l = NULL;
+ p->search_path = strv_uniq(paths);
+ paths = NULL;
p->persistent_config = persistent_config;
p->runtime_config = runtime_config;
p->root_dir = root;
root = NULL;
+ p->temporary_dir = tempdir;
+ tempdir = NULL;
+
return 0;
}
p->runtime_control = mfree(p->runtime_control);
p->root_dir = mfree(p->root_dir);
+ p->temporary_dir = mfree(p->temporary_dir);
}
int lookup_paths_reduce(LookupPaths *p) {
struct stat st;
unsigned k;
+ /* 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;
+ }
+
if (p->root_dir)
r = lstat(p->search_path[c], &st);
else
(void) rm_rf(p->generator_early, REMOVE_ROOT);
if (p->generator_late)
(void) rm_rf(p->generator_late, REMOVE_ROOT);
+
+ if (p->temporary_dir)
+ (void) rm_rf(p->temporary_dir, REMOVE_ROOT);
}
char **generator_binary_paths(UnitFileScope scope) {
projects / thirdparty / systemd.git / blobdiff