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Diffstat (limited to 'src/udev/udevd.c')
-rw-r--r--src/udev/udevd.c113
1 files changed, 66 insertions, 47 deletions
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index c205f1d5ec..d0b8bad48e 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -327,6 +327,7 @@ static void worker_spawn(Manager *manager, struct event *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);
@@ -334,7 +335,9 @@ static void worker_spawn(Manager *manager, struct event *event) {
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) {
@@ -346,7 +349,6 @@ static void worker_spawn(Manager *manager, struct event *event) {
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;
@@ -396,7 +398,7 @@ static void worker_spawn(Manager *manager, struct event *event) {
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;
@@ -528,7 +530,6 @@ out:
default:
{
struct worker *worker;
- int r;
r = worker_new(&worker, manager, worker_monitor, pid);
if (r < 0)
@@ -1090,7 +1091,7 @@ static int synthesize_change(struct udev_device *dev) {
*/
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;
@@ -1105,7 +1106,7 @@ static int synthesize_change(struct udev_device *dev) {
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;
@@ -1113,7 +1114,7 @@ static int synthesize_change(struct udev_device *dev) {
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;
}
@@ -1357,6 +1358,7 @@ static int listen_fds(int *rctrl, int *rnetlink) {
* 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);
@@ -1376,26 +1378,29 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
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;
}
static void help(void) {
@@ -1431,7 +1436,7 @@ static int parse_argv(int argc, char *argv[]) {
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) {
@@ -1607,8 +1612,42 @@ static int manager_new(Manager **ret, int fd_ctrl, int fd_uevent, const char *cg
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;
@@ -1624,8 +1663,10 @@ int main(int argc, char *argv[]) {
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");
@@ -1672,8 +1713,12 @@ int main(int argc, char *argv[]) {
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)
+ 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);
@@ -1706,38 +1751,12 @@ int main(int argc, char *argv[]) {
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;
- }
-
- 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;
+ write_string_file("/proc/self/oom_score_adj", "-1000", 0);
}
- 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;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-04-23 09:14:19 +0000