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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-01-08 17:30:07 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-01-11 18:17:33 -0500
commit4968105790c65af58d4ab42bffa2a4bedc0be8ee (patch)
tree671df60ccecab777fe10672b115bfe870bbd5bde /src/shared
parent87b934960ab514dec4b96ed4ef23c40bc61d3ceb (diff)
Simplify execute_directory()
Remove the optional sepearate opening of the directory, it would be just too complicated with the change to multiple directories. Move the middle of execute_directory() to a seperate function to make it easier to grok.
Diffstat (limited to 'src/shared')
-rw-r--r--src/shared/util.c163
-rw-r--r--src/shared/util.h2
2 files changed, 80 insertions, 85 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index 7d753e448a..06bd1b9f04 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4037,117 +4037,112 @@ bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) {
return endswith(de->d_name, suffix);
}
-void execute_directory(const char *directory, DIR *d, usec_t timeout, char *argv[]) {
- pid_t executor_pid;
- int r;
+static int do_execute(const char *directory, usec_t timeout, char *argv[]) {
+ _cleanup_hashmap_free_free_ Hashmap *pids = NULL;
+ _cleanup_closedir_ DIR *d;
+ struct dirent *de;
- assert(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 */
- /* Executes all binaries in a directory in parallel and waits
- * for them to finish. Optionally a timeout is applied. */
+ reset_all_signal_handlers();
+ reset_signal_mask();
- executor_pid = fork();
- if (executor_pid < 0) {
- log_error_errno(errno, "Failed to fork: %m");
- return;
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
- } else if (executor_pid == 0) {
- _cleanup_hashmap_free_free_ Hashmap *pids = NULL;
- _cleanup_closedir_ DIR *_d = NULL;
- struct dirent *de;
+ d = opendir(directory);
+ if (!d) {
+ if (errno == ENOENT)
+ return 0;
- /* We fork this all off from a child process so that
- * we can somewhat cleanly make use of SIGALRM to set
- * a time limit */
+ return log_error_errno(errno, "Failed to open directory %s: %m", directory);
+ }
- reset_all_signal_handlers();
- reset_signal_mask();
+ pids = hashmap_new(NULL);
+ if (!pids)
+ return log_oom();
- assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+ FOREACH_DIRENT(de, d, break) {
+ _cleanup_free_ char *path = NULL;
+ pid_t pid;
+ int r;
- if (!d) {
- d = _d = opendir(directory);
- if (!d) {
- if (errno == ENOENT)
- _exit(EXIT_SUCCESS);
+ if (!dirent_is_file(de))
+ continue;
- log_error_errno(errno, "Failed to enumerate directory %s: %m", directory);
- _exit(EXIT_FAILURE);
- }
- }
+ path = strjoin(directory, "/", de->d_name, NULL);
+ if (!path)
+ return log_oom();
- pids = hashmap_new(NULL);
- if (!pids) {
- log_oom();
- _exit(EXIT_FAILURE);
- }
+ pid = fork();
+ if (pid < 0) {
+ log_error_errno(errno, "Failed to fork: %m");
+ continue;
+ } else if (pid == 0) {
+ char *_argv[2];
- FOREACH_DIRENT(de, d, break) {
- _cleanup_free_ char *path = NULL;
- pid_t pid;
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
- if (!dirent_is_file(de))
- continue;
+ if (!argv) {
+ _argv[0] = path;
+ _argv[1] = NULL;
+ argv = _argv;
+ } else
+ argv[0] = path;
- path = strjoin(directory, "/", de->d_name, NULL);
- if (!path) {
- log_oom();
- _exit(EXIT_FAILURE);
- }
+ 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;
+ path = NULL;
+ }
- execv(path, argv);
- log_error_errno(errno, "Failed to execute %s: %m", path);
- _exit(EXIT_FAILURE);
- }
+ /* Abort execution of this process after the timout. We simply
+ * rely on SIGALRM as default action terminating the process,
+ * and turn on alarm(). */
- log_debug("Spawned %s as " PID_FMT ".", path, pid);
+ if (timeout != USEC_INFINITY)
+ alarm((timeout + USEC_PER_SEC - 1) / USEC_PER_SEC);
- r = hashmap_put(pids, UINT_TO_PTR(pid), path);
- if (r < 0) {
- log_oom();
- _exit(EXIT_FAILURE);
- }
+ while (!hashmap_isempty(pids)) {
+ _cleanup_free_ char *path = NULL;
+ pid_t pid;
- path = NULL;
- }
+ pid = PTR_TO_UINT(hashmap_first_key(pids));
+ assert(pid > 0);
+
+ path = hashmap_remove(pids, UINT_TO_PTR(pid));
+ assert(path);
- /* Abort execution of this process after the
- * timout. We simply rely on SIGALRM as default action
- * terminating the process, and turn on alarm(). */
+ wait_for_terminate_and_warn(path, pid, true);
+ }
- if (timeout != USEC_INFINITY)
- alarm((timeout + USEC_PER_SEC - 1) / USEC_PER_SEC);
+ return 0;
+}
- while (!hashmap_isempty(pids)) {
- _cleanup_free_ char *path = NULL;
- pid_t pid;
+void execute_directory(const char *directory, usec_t timeout, char *argv[]) {
+ pid_t executor_pid;
+ int r;
- pid = PTR_TO_UINT(hashmap_first_key(pids));
- assert(pid > 0);
+ assert(directory);
- path = hashmap_remove(pids, UINT_TO_PTR(pid));
- assert(path);
+ /* Executes all binaries in the directory in parallel and waits
+ * for them to finish. Optionally a timeout is applied. */
- wait_for_terminate_and_warn(path, pid, true);
- }
+ executor_pid = fork();
+ if (executor_pid < 0) {
+ log_error_errno(errno, "Failed to fork: %m");
+ return;
- _exit(EXIT_SUCCESS);
+ } else if (executor_pid == 0) {
+ r = do_execute(directory, timeout, argv);
+ _exit(r < 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}
wait_for_terminate_and_warn(directory, executor_pid, true);
diff --git a/src/shared/util.h b/src/shared/util.h
index 3b3035a1c7..3d31cb3f04 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, DIR *_d, usec_t timeout, char *argv[]);
+void execute_directory(const char *directory, usec_t timeout, char *argv[]);
int kill_and_sigcont(pid_t pid, int sig);