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Diffstat (limited to 'src/udev')
-rw-r--r--src/udev/udevd.c105
1 files changed, 54 insertions, 51 deletions
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index a90e4d4bf6..318d769114 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -51,7 +51,6 @@
#include "formats-util.h"
#include "hashmap.h"
-static struct udev_rules *rules;
static int worker_watch[2] = { -1, -1 };
static int fd_signal = -1;
static int fd_ep = -1;
@@ -64,13 +63,14 @@ static int arg_exec_delay;
static usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC;
static usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;
static sigset_t sigmask_orig;
-static UDEV_LIST(event_list);
-static char *udev_cgroup;
typedef struct Manager {
struct udev *udev;
Hashmap *workers;
+ struct udev_list_node events;
+ char *cgroup;
+ struct udev_rules *rules;
struct udev_list properties;
struct udev_monitor *monitor;
@@ -111,7 +111,7 @@ static inline struct event *node_to_event(struct udev_list_node *node) {
return container_of(node, struct event, node);
}
-static void event_queue_cleanup(struct udev *udev, enum event_state type);
+static void event_queue_cleanup(Manager *manager, enum event_state type);
enum worker_state {
WORKER_UNDEF,
@@ -249,7 +249,7 @@ static void worker_spawn(Manager *manager, struct event *event) {
event->dev = NULL;
manager_workers_free(manager);
- event_queue_cleanup(udev, EVENT_UNDEF);
+ event_queue_cleanup(manager, EVENT_UNDEF);
udev_monitor_unref(manager->monitor);
udev_ctrl_unref(manager->ctrl);
close(fd_signal);
@@ -343,7 +343,7 @@ static void worker_spawn(Manager *manager, struct event *event) {
udev_event_execute_rules(udev_event,
arg_event_timeout_usec, arg_event_timeout_warn_usec,
&manager->properties,
- rules,
+ manager->rules,
&sigmask_orig);
udev_event_execute_run(udev_event,
@@ -424,7 +424,7 @@ out:
safe_close(fd_ep);
close(fd_inotify);
close(worker_watch[WRITE_END]);
- udev_rules_unref(rules);
+ udev_rules_unref(manager->rules);
udev_builtin_exit(udev);
udev_unref(udev);
log_close();
@@ -486,9 +486,12 @@ static void event_run(Manager *manager, struct event *event) {
worker_spawn(manager, event);
}
-static int event_queue_insert(struct udev_device *dev) {
+static int event_queue_insert(Manager *manager, struct udev_device *dev) {
struct event *event;
+ assert(manager);
+ assert(dev);
+
event = new0(struct event, 1);
if (event == NULL)
return -1;
@@ -509,7 +512,7 @@ static int event_queue_insert(struct udev_device *dev) {
udev_device_get_action(dev), udev_device_get_subsystem(dev));
event->state = EVENT_QUEUED;
- udev_list_node_append(&event->node, &event_list);
+ udev_list_node_append(&event->node, &manager->events);
return 0;
}
@@ -529,12 +532,12 @@ static void manager_kill_workers(Manager *manager) {
}
/* lookup event for identical, parent, child device */
-static bool is_devpath_busy(struct event *event) {
+static bool is_devpath_busy(Manager *manager, struct event *event) {
struct udev_list_node *loop;
size_t common;
/* check if queue contains events we depend on */
- udev_list_node_foreach(loop, &event_list) {
+ udev_list_node_foreach(loop, &manager->events) {
struct event *loop_event = node_to_event(loop);
/* we already found a later event, earlier can not block us, no need to check again */
@@ -605,24 +608,24 @@ static void event_queue_start(Manager *manager) {
assert(manager);
- udev_list_node_foreach(loop, &event_list) {
+ udev_list_node_foreach(loop, &manager->events) {
struct event *event = node_to_event(loop);
if (event->state != EVENT_QUEUED)
continue;
/* do not start event if parent or child event is still running */
- if (is_devpath_busy(event))
+ if (is_devpath_busy(manager, event))
continue;
event_run(manager, event);
}
}
-static void event_queue_cleanup(struct udev *udev, enum event_state match_type) {
+static void event_queue_cleanup(Manager *manager, enum event_state match_type) {
struct udev_list_node *loop, *tmp;
- udev_list_node_foreach_safe(loop, tmp, &event_list) {
+ udev_list_node_foreach_safe(loop, tmp, &manager->events) {
struct event *event = node_to_event(loop);
if (match_type != EVENT_UNDEF && match_type != event->state)
@@ -708,7 +711,7 @@ static int on_uevent(sd_event_source *s, int fd, uint32_t revents, void *userdat
dev = udev_monitor_receive_device(manager->monitor);
if (dev) {
udev_device_ensure_usec_initialized(dev, NULL);
- r = event_queue_insert(dev);
+ r = event_queue_insert(manager, dev);
if (r < 0)
udev_device_unref(dev);
}
@@ -716,10 +719,12 @@ static int on_uevent(sd_event_source *s, int fd, uint32_t revents, void *userdat
return 1;
}
-static void event_queue_update(void) {
+static void event_queue_update(Manager *manager) {
int r;
- if (!udev_list_node_is_empty(&event_list)) {
+ assert(manager);
+
+ if (!udev_list_node_is_empty(&manager->events)) {
r = touch("/run/udev/queue");
if (r < 0)
log_warning_errno(r, "could not touch /run/udev/queue: %m");
@@ -806,7 +811,7 @@ static int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userd
/* tell settle that we are busy or idle, this needs to be before the
* PING handling
*/
- event_queue_update();
+ event_queue_update(manager);
}
if (udev_ctrl_get_exit(ctrl_msg) > 0) {
@@ -1219,12 +1224,15 @@ static void manager_free(Manager *manager) {
udev_unref(manager->udev);
manager_workers_free(manager);
+ event_queue_cleanup(manager, EVENT_UNDEF);
udev_monitor_unref(manager->monitor);
udev_ctrl_unref(manager->ctrl);
udev_ctrl_connection_unref(manager->ctrl_conn_blocking);
udev_list_cleanup(&manager->properties);
+ udev_rules_unref(manager->rules);
+ free(manager->cgroup);
free(manager);
}
@@ -1244,6 +1252,13 @@ static int manager_new(Manager **ret) {
if (!manager->udev)
return log_error_errno(errno, "could not allocate udev context: %m");
+ manager->rules = udev_rules_new(manager->udev, arg_resolve_names);
+ if (!manager->rules)
+ return log_error_errno(ENOMEM, "error reading rules");
+
+ udev_list_node_init(&manager->events);
+ udev_list_init(manager->udev, &manager->properties, true);
+
*ret = manager;
manager = NULL;
@@ -1267,10 +1282,6 @@ int main(int argc, char *argv[]) {
log_parse_environment();
log_open();
- r = manager_new(&manager);
- if (r < 0)
- goto exit;
-
r = parse_argv(argc, argv);
if (r <= 0)
goto exit;
@@ -1302,8 +1313,6 @@ int main(int argc, char *argv[]) {
umask(022);
- udev_list_init(manager->udev, &manager->properties, true);
-
r = mkdir("/run/udev", 0755);
if (r < 0 && errno != EEXIST) {
r = log_error_errno(errno, "could not create /run/udev: %m");
@@ -1312,6 +1321,10 @@ int main(int argc, char *argv[]) {
dev_setup(NULL);
+ r = manager_new(&manager);
+ if (r < 0)
+ goto exit;
+
/* before opening new files, make sure std{in,out,err} fds are in a sane state */
if (arg_daemonize) {
int fd;
@@ -1344,8 +1357,8 @@ int main(int argc, char *argv[]) {
}
/* get our own cgroup, we regularly kill everything udev has left behind */
- if (cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0)
- udev_cgroup = NULL;
+ if (cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &manager->cgroup) < 0)
+ manager->cgroup = NULL;
} else {
/* open control and netlink socket */
manager->ctrl = udev_ctrl_new(manager->udev);
@@ -1379,13 +1392,7 @@ int main(int argc, char *argv[]) {
udev_builtin_init(manager->udev);
- rules = udev_rules_new(manager->udev, arg_resolve_names);
- if (!rules) {
- r = log_error_errno(ENOMEM, "error reading rules");
- goto exit;
- }
-
- r = udev_rules_apply_static_dev_perms(rules);
+ 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");
@@ -1421,8 +1428,6 @@ int main(int argc, char *argv[]) {
}
log_debug("set children_max to %u", arg_children_max);
- udev_list_node_init(&event_list);
-
fd_inotify = udev_watch_init(manager->udev);
if (fd_inotify < 0) {
r = log_error_errno(ENOMEM, "error initializing inotify");
@@ -1495,29 +1500,29 @@ int main(int argc, char *argv[]) {
}
/* discard queued events and kill workers */
- event_queue_cleanup(manager->udev, EVENT_QUEUED);
+ event_queue_cleanup(manager, EVENT_QUEUED);
manager_kill_workers(manager);
/* exit after all has cleaned up */
- if (udev_list_node_is_empty(&event_list) && hashmap_isempty(manager->workers))
+ if (udev_list_node_is_empty(&manager->events) && hashmap_isempty(manager->workers))
break;
/* timeout at exit for workers to finish */
timeout = 30 * MSEC_PER_SEC;
- } else if (udev_list_node_is_empty(&event_list) && hashmap_isempty(manager->workers)) {
+ } else if (udev_list_node_is_empty(&manager->events) && hashmap_isempty(manager->workers)) {
/* we are idle */
timeout = -1;
/* cleanup possible left-over processes in our cgroup */
- if (udev_cgroup)
- cg_kill(SYSTEMD_CGROUP_CONTROLLER, udev_cgroup, SIGKILL, false, true, NULL);
+ if (manager->cgroup)
+ cg_kill(SYSTEMD_CGROUP_CONTROLLER, manager->cgroup, SIGKILL, false, true, NULL);
} else {
/* kill idle or hanging workers */
timeout = 3 * MSEC_PER_SEC;
}
/* tell settle that we are busy or idle */
- event_queue_update();
+ event_queue_update(manager);
fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), timeout);
if (fdcount < 0)
@@ -1534,7 +1539,7 @@ int main(int argc, char *argv[]) {
}
/* kill idle workers */
- if (udev_list_node_is_empty(&event_list)) {
+ if (udev_list_node_is_empty(&manager->events)) {
log_debug("cleanup idle workers");
manager_kill_workers(manager);
}
@@ -1583,7 +1588,7 @@ int main(int argc, char *argv[]) {
/* check for changed config, every 3 seconds at most */
if ((now(CLOCK_MONOTONIC) - last_usec) > 3 * USEC_PER_SEC) {
- if (udev_rules_check_timestamp(rules))
+ if (udev_rules_check_timestamp(manager->rules))
manager->reload = true;
if (udev_builtin_validate(manager->udev))
manager->reload = true;
@@ -1594,7 +1599,7 @@ int main(int argc, char *argv[]) {
/* reload requested, HUP signal received, rules changed, builtin changed */
if (manager->reload) {
manager_kill_workers(manager);
- rules = udev_rules_unref(rules);
+ manager->rules = udev_rules_unref(manager->rules);
udev_builtin_exit(manager->udev);
manager->reload = false;
}
@@ -1608,11 +1613,11 @@ int main(int argc, char *argv[]) {
on_uevent(NULL, fd_netlink, 0, manager);
/* start new events */
- if (!udev_list_node_is_empty(&event_list) && !manager->exit && !manager->stop_exec_queue) {
+ if (!udev_list_node_is_empty(&manager->events) && !manager->exit && !manager->stop_exec_queue) {
udev_builtin_init(manager->udev);
- if (rules == NULL)
- rules = udev_rules_new(manager->udev, arg_resolve_names);
- if (rules != NULL)
+ if (!manager->rules)
+ manager->rules = udev_rules_new(manager->udev, arg_resolve_names);
+ if (manager->rules)
event_queue_start(manager);
}
@@ -1660,8 +1665,6 @@ exit:
exit_daemonize:
if (fd_ep >= 0)
close(fd_ep);
- event_queue_cleanup(manager->udev, EVENT_UNDEF);
- udev_rules_unref(rules);
udev_builtin_exit(manager->udev);
if (fd_signal >= 0)
close(fd_signal);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 00:58:51 +0000