* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <stddef.h>
-#include <signal.h>
-#include <unistd.h>
#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
-#include <stdbool.h>
#include <string.h>
-#include <fcntl.h>
-#include <getopt.h>
+#include <sys/epoll.h>
#include <sys/file.h>
-#include <sys/time.h>
+#include <sys/inotify.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
#include <sys/prctl.h>
-#include <sys/socket.h>
#include <sys/signalfd.h>
-#include <sys/epoll.h>
-#include <sys/mount.h>
-#include <sys/wait.h>
+#include <sys/socket.h>
#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <sys/inotify.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <unistd.h>
#include "sd-daemon.h"
#include "sd-event.h"
-#include "signal-util.h"
-#include "event-util.h"
-#include "netlink-util.h"
#include "cgroup-util.h"
-#include "process-util.h"
+#include "cpu-set-util.h"
#include "dev-setup.h"
+#include "event-util.h"
#include "fileio.h"
-#include "selinux-util.h"
-#include "udev.h"
-#include "udev-util.h"
#include "formats-util.h"
#include "hashmap.h"
+#include "netlink-util.h"
+#include "process-util.h"
+#include "selinux-util.h"
+#include "signal-util.h"
+#include "string-util.h"
+#include "terminal-util.h"
+#include "udev-util.h"
+#include "udev.h"
static bool arg_debug = false;
static int arg_daemonize = false;
static void worker_attach_event(struct worker *worker, struct event *event) {
sd_event *e;
uint64_t usec;
- int r;
assert(worker);
assert(worker->manager);
e = worker->manager->event;
- r = sd_event_now(e, clock_boottime_or_monotonic(), &usec);
- if (r < 0)
- return;
+ assert_se(sd_event_now(e, clock_boottime_or_monotonic(), &usec) >= 0);
(void) sd_event_add_time(e, &event->timeout_warning, clock_boottime_or_monotonic(),
usec + arg_event_timeout_warn_usec, USEC_PER_SEC, on_event_timeout_warning, event);
struct udev *udev = event->udev;
_cleanup_udev_monitor_unref_ struct udev_monitor *worker_monitor = NULL;
pid_t pid;
+ int r = 0;
/* listen for new events */
worker_monitor = udev_monitor_new_from_netlink(udev, NULL);
return;
/* allow the main daemon netlink address to send devices to the worker */
udev_monitor_allow_unicast_sender(worker_monitor, manager->monitor);
- udev_monitor_enable_receiving(worker_monitor);
+ r = udev_monitor_enable_receiving(worker_monitor);
+ if (r < 0)
+ log_error_errno(r, "worker: could not enable receiving of device: %m");
pid = fork();
switch (pid) {
struct epoll_event ep_signal = { .events = EPOLLIN };
struct epoll_event ep_monitor = { .events = EPOLLIN };
sigset_t mask;
- int r = 0;
/* take initial device from queue */
dev = event->dev;
prctl(PR_SET_PDEATHSIG, SIGTERM);
/* reset OOM score, we only protect the main daemon */
- write_string_file("/proc/self/oom_score_adj", "0");
+ write_string_file("/proc/self/oom_score_adj", "0", 0);
for (;;) {
struct udev_event *udev_event;
if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) {
log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d));
fd_lock = safe_close(fd_lock);
- r = -EAGAIN;
goto skip;
}
}
default:
{
struct worker *worker;
- int r;
r = worker_new(&worker, manager, worker_monitor, pid);
if (r < 0)
"STATUS=Starting shutdown...");
/* close sources of new events and discard buffered events */
- manager->ctrl = udev_ctrl_unref(manager->ctrl);
manager->ctrl_event = sd_event_source_unref(manager->ctrl_event);
+ manager->ctrl = udev_ctrl_unref(manager->ctrl);
- manager->fd_inotify = safe_close(manager->fd_inotify);
manager->inotify_event = sd_event_source_unref(manager->inotify_event);
+ manager->fd_inotify = safe_close(manager->fd_inotify);
- manager->monitor = udev_monitor_unref(manager->monitor);
manager->uevent_event = sd_event_source_unref(manager->uevent_event);
+ manager->monitor = udev_monitor_unref(manager->monitor);
/* discard queued events and kill workers */
event_queue_cleanup(manager, EVENT_QUEUED);
manager_kill_workers(manager);
- r = sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec);
- if (r < 0)
- return;
+ assert_se(sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec) >= 0);
r = sd_event_add_time(manager->event, NULL, clock_boottime_or_monotonic(),
usec + 30 * USEC_PER_SEC, USEC_PER_SEC, on_exit_timeout, manager);
static void event_queue_start(Manager *manager) {
struct udev_list_node *loop;
usec_t usec;
- int r;
assert(manager);
manager->exit || manager->stop_exec_queue)
return;
- r = sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec);
- if (r >= 0) {
- /* check for changed config, every 3 seconds at most */
- if (manager->last_usec == 0 ||
- (usec - manager->last_usec) > 3 * USEC_PER_SEC) {
- if (udev_rules_check_timestamp(manager->rules) ||
- udev_builtin_validate(manager->udev))
- manager_reload(manager);
+ assert_se(sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec) >= 0);
+ /* check for changed config, every 3 seconds at most */
+ if (manager->last_usec == 0 ||
+ (usec - manager->last_usec) > 3 * USEC_PER_SEC) {
+ if (udev_rules_check_timestamp(manager->rules) ||
+ udev_builtin_validate(manager->udev))
+ manager_reload(manager);
- manager->last_usec = usec;
- }
+ manager->last_usec = usec;
}
udev_builtin_init(manager->udev);
*/
log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);
- write_string_file(filename, "change");
+ write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
log_debug("device %s closed, synthesising partition '%s' 'change'",
udev_device_get_devnode(dev), udev_device_get_devnode(d));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL);
- write_string_file(filename, "change");
+ write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
}
return 0;
log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);
- write_string_file(filename, "change");
+ write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
return 0;
}
* udev.event-timeout=<number of seconds> seconds to wait before terminating an event
*/
static int parse_proc_cmdline_item(const char *key, const char *value) {
+ const char *full_key = key;
int r;
assert(key);
int prio;
prio = util_log_priority(value);
+ if (prio < 0)
+ goto invalid;
log_set_max_level(prio);
} else if (streq(key, "children-max")) {
r = safe_atou(value, &arg_children_max);
if (r < 0)
- log_warning("invalid udev.children-max ignored: %s", value);
+ goto invalid;
} else if (streq(key, "exec-delay")) {
r = safe_atoi(value, &arg_exec_delay);
if (r < 0)
- log_warning("invalid udev.exec-delay ignored: %s", value);
+ goto invalid;
} else if (streq(key, "event-timeout")) {
r = safe_atou64(value, &arg_event_timeout_usec);
if (r < 0)
- log_warning("invalid udev.event-timeout ignored: %s", value);
- else {
- arg_event_timeout_usec *= USEC_PER_SEC;
- arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
- }
+ goto invalid;
+ arg_event_timeout_usec *= USEC_PER_SEC;
+ arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
}
+ return 0;
+invalid:
+ log_warning("invalid %s ignored: %s", full_key, value);
return 0;
}
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "c:de:Dt:N:hV", options, NULL)) >= 0) {
int r;
switch (c) {
udev_watch_restore(manager->udev);
/* block and listen to all signals on signalfd */
- assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) == 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0);
r = sd_event_default(&manager->event);
if (r < 0)
return 0;
}
-int main(int argc, char *argv[]) {
+static int run(int fd_ctrl, int fd_uevent, const char *cgroup) {
_cleanup_(manager_freep) Manager *manager = NULL;
+ int r;
+
+ r = manager_new(&manager, fd_ctrl, fd_uevent, cgroup);
+ if (r < 0) {
+ r = log_error_errno(r, "failed to allocate manager object: %m");
+ goto exit;
+ }
+
+ r = udev_rules_apply_static_dev_perms(manager->rules);
+ if (r < 0)
+ log_error_errno(r, "failed to apply permissions on static device nodes: %m");
+
+ (void) sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing...");
+
+ r = sd_event_loop(manager->event);
+ if (r < 0) {
+ log_error_errno(r, "event loop failed: %m");
+ goto exit;
+ }
+
+ sd_event_get_exit_code(manager->event, &r);
+
+exit:
+ sd_notify(false,
+ "STOPPING=1\n"
+ "STATUS=Shutting down...");
+ if (manager)
+ udev_ctrl_cleanup(manager->ctrl);
+ return r;
+}
+
+int main(int argc, char *argv[]) {
_cleanup_free_ char *cgroup = NULL;
int r, fd_ctrl, fd_uevent;
if (r < 0)
log_warning_errno(r, "failed to parse kernel command line, ignoring: %m");
- if (arg_debug)
+ if (arg_debug) {
+ log_set_target(LOG_TARGET_CONSOLE);
log_set_max_level(LOG_DEBUG);
+ }
if (getuid() != 0) {
r = log_error_errno(EPERM, "root privileges required");
arg_children_max = 8;
- if (sched_getaffinity(0, sizeof (cpu_set), &cpu_set) == 0) {
+ if (sched_getaffinity(0, sizeof(cpu_set), &cpu_set) == 0)
arg_children_max += CPU_COUNT(&cpu_set) * 2;
- }
log_debug("set children_max to %u", arg_children_max);
}
we only do this on systemd systems, and only if we are directly spawned
by PID1. otherwise we are not guaranteed to have a dedicated cgroup */
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &cgroup);
- if (r < 0)
- log_warning_errno(r, "failed to get cgroup: %m");
+ if (r < 0) {
+ if (r == -ENOENT || r == -ENOEXEC)
+ log_debug_errno(r, "did not find dedicated cgroup: %m");
+ else
+ log_warning_errno(r, "failed to get cgroup: %m");
+ }
}
r = listen_fds(&fd_ctrl, &fd_uevent);
log_info("starting version " VERSION);
+ /* connect /dev/null to stdin, stdout, stderr */
+ if (log_get_max_level() < LOG_DEBUG)
+ (void) make_null_stdio();
+
pid = fork();
switch (pid) {
case 0:
setsid();
- write_string_file("/proc/self/oom_score_adj", "-1000");
- }
-
- r = manager_new(&manager, fd_ctrl, fd_uevent, cgroup);
- if (r < 0) {
- r = log_error_errno(r, "failed to allocate manager object: %m");
- goto exit;
+ write_string_file("/proc/self/oom_score_adj", "-1000", 0);
}
- r = udev_rules_apply_static_dev_perms(manager->rules);
- if (r < 0)
- log_error_errno(r, "failed to apply permissions on static device nodes: %m");
-
- (void) sd_notify(false,
- "READY=1\n"
- "STATUS=Processing...");
-
- r = sd_event_loop(manager->event);
- if (r < 0) {
- log_error_errno(r, "event loop failed: %m");
- goto exit;
- }
-
- sd_event_get_exit_code(manager->event, &r);
+ r = run(fd_ctrl, fd_uevent, cgroup);
exit:
- sd_notify(false,
- "STOPPING=1\n"
- "STATUS=Shutting down...");
-
- if (manager)
- udev_ctrl_cleanup(manager->ctrl);
mac_selinux_finish();
log_close();
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;