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-rw-r--r--src/shared/path-lookup.c128
-rw-r--r--src/shared/path-lookup.h2
-rw-r--r--src/shared/util.c122
-rw-r--r--src/shared/util.h2
4 files changed, 158 insertions, 96 deletions
diff --git a/src/shared/path-lookup.c b/src/shared/path-lookup.c
index 051f1a4835..1e5bb858e8 100644
--- a/src/shared/path-lookup.c
+++ b/src/shared/path-lookup.c
@@ -78,6 +78,33 @@ int user_runtime_dir(char **runtime_dir) {
return 0;
}
+static int user_data_home_dir(char **dir, const char *suffix) {
+ const char *e;
+ char *res;
+
+ /* We don't treat /etc/xdg/systemd here as the spec
+ * suggests because we assume that that is a link to
+ * /etc/systemd/ anyway. */
+
+ e = getenv("XDG_DATA_HOME");
+ if (e)
+ res = strappend(e, suffix);
+ else {
+ const char *home;
+
+ home = getenv("HOME");
+ if (home)
+ res = strjoin(home, "/.local/share", suffix, NULL);
+ else
+ return 0;
+ }
+ if (!res)
+ return -ENOMEM;
+
+ *dir = res;
+ return 0;
+}
+
static char** user_dirs(
const char *generator,
const char *generator_early,
@@ -100,10 +127,12 @@ static char** user_dirs(
NULL
};
- const char *home, *e;
+ const char *e;
_cleanup_free_ char *config_home = NULL, *runtime_dir = NULL, *data_home = NULL;
_cleanup_strv_free_ char **config_dirs = NULL, **data_dirs = NULL;
- char **r = NULL;
+ _cleanup_free_ char **res = NULL;
+ char **tmp;
+ int r;
/* Implement the mechanisms defined in
*
@@ -115,33 +144,21 @@ static char** user_dirs(
*/
if (user_config_home(&config_home) < 0)
- goto fail;
+ return NULL;
if (user_runtime_dir(&runtime_dir) < 0)
- goto fail;
-
- home = getenv("HOME");
+ return NULL;
e = getenv("XDG_CONFIG_DIRS");
if (e) {
config_dirs = strv_split(e, ":");
if (!config_dirs)
- goto fail;
+ return NULL;
}
- /* We don't treat /etc/xdg/systemd here as the spec
- * suggests because we assume that that is a link to
- * /etc/systemd/ anyway. */
-
- e = getenv("XDG_DATA_HOME");
- if (e) {
- if (asprintf(&data_home, "%s/systemd/user", e) < 0)
- goto fail;
-
- } else if (home) {
- if (asprintf(&data_home, "%s/.local/share/systemd/user", home) < 0)
- goto fail;
- }
+ r = user_data_home_dir(&data_home, "/systemd/user");
+ if (r < 0)
+ return NULL;
e = getenv("XDG_DATA_DIRS");
if (e)
@@ -151,58 +168,71 @@ static char** user_dirs(
"/usr/share",
NULL);
if (!data_dirs)
- goto fail;
+ return NULL;
/* Now merge everything we found. */
if (generator_early)
- if (strv_extend(&r, generator_early) < 0)
- goto fail;
+ if (strv_extend(&res, generator_early) < 0)
+ return NULL;
if (config_home)
- if (strv_extend(&r, config_home) < 0)
- goto fail;
+ if (strv_extend(&res, config_home) < 0)
+ return NULL;
if (!strv_isempty(config_dirs))
- if (strv_extend_strv_concat(&r, config_dirs, "/systemd/user") < 0)
- goto fail;
+ if (strv_extend_strv_concat(&res, config_dirs, "/systemd/user") < 0)
+ return NULL;
- if (strv_extend_strv(&r, (char**) config_unit_paths) < 0)
- goto fail;
+ if (strv_extend_strv(&res, (char**) config_unit_paths) < 0)
+ return NULL;
if (runtime_dir)
- if (strv_extend(&r, runtime_dir) < 0)
- goto fail;
+ if (strv_extend(&res, runtime_dir) < 0)
+ return NULL;
- if (strv_extend(&r, runtime_unit_path) < 0)
- goto fail;
+ if (strv_extend(&res, runtime_unit_path) < 0)
+ return NULL;
if (generator)
- if (strv_extend(&r, generator) < 0)
- goto fail;
+ if (strv_extend(&res, generator) < 0)
+ return NULL;
if (data_home)
- if (strv_extend(&r, data_home) < 0)
- goto fail;
+ if (strv_extend(&res, data_home) < 0)
+ return NULL;
if (!strv_isempty(data_dirs))
- if (strv_extend_strv_concat(&r, data_dirs, "/systemd/user") < 0)
- goto fail;
+ if (strv_extend_strv_concat(&res, data_dirs, "/systemd/user") < 0)
+ return NULL;
- if (strv_extend_strv(&r, (char**) data_unit_paths) < 0)
- goto fail;
+ if (strv_extend_strv(&res, (char**) data_unit_paths) < 0)
+ return NULL;
if (generator_late)
- if (strv_extend(&r, generator_late) < 0)
- goto fail;
+ if (strv_extend(&res, generator_late) < 0)
+ return NULL;
- if (!path_strv_make_absolute_cwd(r))
- goto fail;
+ if (!path_strv_make_absolute_cwd(res))
+ return NULL;
- return r;
+ tmp = res;
+ res = NULL;
+ return tmp;
+}
-fail:
- strv_free(r);
- return NULL;
+char **generator_paths(SystemdRunningAs running_as) {
+ if (running_as == SYSTEMD_USER)
+ return strv_new("/etc/systemd/user-generators",
+ "/run/systemd/user-generators",
+ "/usr/local/lib/systemd/user-generators",
+ USER_GENERATOR_PATH,
+ NULL);
+ else
+ return strv_new("/etc/systemd/system-generators",
+ "/run/systemd/system-generators",
+ "/usr/local/lib/systemd/system-generators",
+ SYSTEM_GENERATOR_PATH,
+ NULL);
}
int lookup_paths_init(
diff --git a/src/shared/path-lookup.h b/src/shared/path-lookup.h
index 655e4549ca..2ec888da81 100644
--- a/src/shared/path-lookup.h
+++ b/src/shared/path-lookup.h
@@ -42,6 +42,8 @@ typedef enum SystemdRunningAs {
int user_config_home(char **config_home);
int user_runtime_dir(char **runtime_dir);
+char **generator_paths(SystemdRunningAs running_as);
+
int lookup_paths_init(LookupPaths *p,
SystemdRunningAs running_as,
bool personal,
diff --git a/src/shared/util.c b/src/shared/util.c
index 06bd1b9f04..6520e511f0 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4037,10 +4037,10 @@ bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) {
return endswith(de->d_name, suffix);
}
-static int do_execute(const char *directory, usec_t timeout, char *argv[]) {
+static int do_execute(char **directories, usec_t timeout, char *argv[]) {
_cleanup_hashmap_free_free_ Hashmap *pids = NULL;
- _cleanup_closedir_ DIR *d;
- struct dirent *de;
+ _cleanup_set_free_free_ Set *seen = NULL;
+ char **directory;
/* We fork this all off from a child process so that we can
* somewhat cleanly make use of SIGALRM to set a time limit */
@@ -4050,57 +4050,80 @@ static int do_execute(const char *directory, usec_t timeout, char *argv[]) {
assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
- d = opendir(directory);
- if (!d) {
- if (errno == ENOENT)
- return 0;
-
- return log_error_errno(errno, "Failed to open directory %s: %m", directory);
- }
-
pids = hashmap_new(NULL);
if (!pids)
return log_oom();
- FOREACH_DIRENT(de, d, break) {
- _cleanup_free_ char *path = NULL;
- pid_t pid;
- int r;
+ seen = set_new(&string_hash_ops);
+ if (!seen)
+ return log_oom();
- if (!dirent_is_file(de))
- continue;
+ STRV_FOREACH(directory, directories) {
+ _cleanup_closedir_ DIR *d;
+ struct dirent *de;
- path = strjoin(directory, "/", de->d_name, NULL);
- if (!path)
- return log_oom();
+ d = opendir(*directory);
+ if (!d) {
+ if (errno == ENOENT)
+ continue;
- pid = fork();
- if (pid < 0) {
- log_error_errno(errno, "Failed to fork: %m");
- continue;
- } else if (pid == 0) {
- char *_argv[2];
+ return log_error_errno(errno, "Failed to open directory %s: %m", *directory);
+ }
- assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+ FOREACH_DIRENT(de, d, break) {
+ _cleanup_free_ char *path = NULL;
+ pid_t pid;
+ int r;
- if (!argv) {
- _argv[0] = path;
- _argv[1] = NULL;
- argv = _argv;
+ if (!dirent_is_file(de))
+ continue;
+
+ if (set_contains(seen, de->d_name)) {
+ log_debug("%1$s/%2$s skipped (%2$s was already seen).", *directory, de->d_name);
+ continue;
+ }
+
+ r = set_put_strdup(seen, de->d_name);
+ if (r < 0)
+ return log_oom();
+
+ path = strjoin(*directory, "/", de->d_name, NULL);
+ if (!path)
+ return log_oom();
+
+ if (null_or_empty_path(path)) {
+ log_debug("%s is empty (a mask).", path);
+ continue;
} else
- argv[0] = path;
+ log_debug("%s will be executed.", path);
- execv(path, argv);
- return log_error_errno(errno, "Failed to execute %s: %m", path);
- }
+ pid = fork();
+ if (pid < 0) {
+ log_error_errno(errno, "Failed to fork: %m");
+ continue;
+ } else if (pid == 0) {
+ char *_argv[2];
- log_debug("Spawned %s as " PID_FMT ".", path, pid);
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
- r = hashmap_put(pids, UINT_TO_PTR(pid), path);
- if (r < 0)
- return log_oom();
+ if (!argv) {
+ _argv[0] = path;
+ _argv[1] = NULL;
+ argv = _argv;
+ } else
+ argv[0] = path;
+
+ execv(path, argv);
+ return log_error_errno(errno, "Failed to execute %s: %m", path);
+ }
+
+ log_debug("Spawned %s as " PID_FMT ".", path, pid);
- path = NULL;
+ r = hashmap_put(pids, UINT_TO_PTR(pid), path);
+ if (r < 0)
+ return log_oom();
+ path = NULL;
+ }
}
/* Abort execution of this process after the timout. We simply
@@ -4126,14 +4149,21 @@ static int do_execute(const char *directory, usec_t timeout, char *argv[]) {
return 0;
}
-void execute_directory(const char *directory, usec_t timeout, char *argv[]) {
+void execute_directories(const char* const* directories, usec_t timeout, char *argv[]) {
pid_t executor_pid;
int r;
+ char *name;
+ char **dirs = (char**) directories;
+
+ assert(!strv_isempty(dirs));
- assert(directory);
+ name = basename(dirs[0]);
+ assert(!isempty(name));
- /* Executes all binaries in the directory in parallel and waits
- * for them to finish. Optionally a timeout is applied. */
+ /* Executes all binaries in the directories in parallel and waits
+ * for them to finish. Optionally a timeout is applied. If a file
+ * with the same name exists in more than one directory, the
+ * earliest one wins. */
executor_pid = fork();
if (executor_pid < 0) {
@@ -4141,11 +4171,11 @@ void execute_directory(const char *directory, usec_t timeout, char *argv[]) {
return;
} else if (executor_pid == 0) {
- r = do_execute(directory, timeout, argv);
+ r = do_execute(dirs, timeout, argv);
_exit(r < 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}
- wait_for_terminate_and_warn(directory, executor_pid, true);
+ wait_for_terminate_and_warn(name, executor_pid, true);
}
int kill_and_sigcont(pid_t pid, int sig) {
diff --git a/src/shared/util.h b/src/shared/util.h
index 3d31cb3f04..141a3feab6 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -534,7 +534,7 @@ bool tty_is_console(const char *tty) _pure_;
int vtnr_from_tty(const char *tty);
const char *default_term_for_tty(const char *tty);
-void execute_directory(const char *directory, usec_t timeout, char *argv[]);
+void execute_directories(const char* const* directories, usec_t timeout, char *argv[]);
int kill_and_sigcont(pid_t pid, int sig);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 11:14:18 +0000