udevd: make udev_ctrl_connection global
This allows us to simplify the ctrl_msg handler. Eventually all this global state should move to a Manager object or so.
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eacd853425
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@ -30,6 +30,8 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_enumerate*, udev_enumerate_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_event*, udev_event_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_rules*, udev_rules_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl*, udev_ctrl_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl_connection*, udev_ctrl_connection_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl_msg*, udev_ctrl_msg_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
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#define _cleanup_udev_unref_ _cleanup_(udev_unrefp)
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@ -38,5 +40,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
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#define _cleanup_udev_event_unref_ _cleanup_(udev_event_unrefp)
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#define _cleanup_udev_rules_unref_ _cleanup_(udev_rules_unrefp)
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#define _cleanup_udev_ctrl_unref_ _cleanup_(udev_ctrl_unrefp)
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#define _cleanup_udev_ctrl_connection_unref_ _cleanup_(udev_ctrl_connection_unrefp)
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#define _cleanup_udev_ctrl_msg_unref_ _cleanup_(udev_ctrl_msg_unrefp)
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#define _cleanup_udev_monitor_unref_ _cleanup_(udev_monitor_unrefp)
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#define _cleanup_udev_list_cleanup_ _cleanup_(udev_list_cleanup)
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@ -53,6 +53,7 @@
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static struct udev_rules *rules;
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static struct udev_ctrl *udev_ctrl;
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static struct udev_ctrl_connection *udev_ctrl_conn;
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static struct udev_monitor *monitor;
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static int worker_watch[2] = { -1, -1 };
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static int fd_signal = -1;
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@ -500,7 +501,7 @@ static int event_queue_insert(struct udev_device *dev) {
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return 0;
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}
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static void worker_kill(struct udev *udev) {
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static void worker_kill(void) {
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struct worker *worker;
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Iterator i;
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@ -677,26 +678,27 @@ static void worker_returned(int fd_worker) {
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}
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/* receive the udevd message from userspace */
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static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
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struct udev *udev = udev_ctrl_get_udev(uctrl);
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struct udev_ctrl_connection *ctrl_conn;
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struct udev_ctrl_msg *ctrl_msg = NULL;
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static void handle_ctrl_msg(struct udev_ctrl *uctrl) {
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_cleanup_udev_ctrl_connection_unref_ struct udev_ctrl_connection *ctrl_conn = NULL;
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_cleanup_udev_ctrl_msg_unref_ struct udev_ctrl_msg *ctrl_msg = NULL;
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const char *str;
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int i;
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assert(uctrl);
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ctrl_conn = udev_ctrl_get_connection(uctrl);
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if (ctrl_conn == NULL)
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goto out;
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if (!ctrl_conn)
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return;
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ctrl_msg = udev_ctrl_receive_msg(ctrl_conn);
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if (ctrl_msg == NULL)
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goto out;
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if (!ctrl_msg)
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return;
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i = udev_ctrl_get_set_log_level(ctrl_msg);
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if (i >= 0) {
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log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);
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log_set_max_level(i);
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worker_kill(udev);
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worker_kill();
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}
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if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {
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@ -738,7 +740,7 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
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}
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free(key);
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}
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worker_kill(udev);
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worker_kill();
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}
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i = udev_ctrl_get_set_children_max(ctrl_msg);
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@ -754,11 +756,10 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
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log_debug("udevd message (EXIT) received");
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udev_exit = true;
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/* keep reference to block the client until we exit */
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udev_ctrl_connection_ref(ctrl_conn);
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udev_ctrl_conn = udev_ctrl_connection_ref(ctrl_conn);
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}
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out:
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udev_ctrl_msg_unref(ctrl_msg);
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return udev_ctrl_connection_unref(ctrl_conn);
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return;
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}
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static int synthesize_change(struct udev_device *dev) {
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@ -1158,7 +1159,6 @@ int main(int argc, char *argv[]) {
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struct epoll_event ep_signal = { .events = EPOLLIN };
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struct epoll_event ep_netlink = { .events = EPOLLIN };
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struct epoll_event ep_worker = { .events = EPOLLIN };
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struct udev_ctrl_connection *ctrl_conn = NULL;
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int r = 0, one = 1;
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udev = udev_new();
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@ -1397,7 +1397,7 @@ int main(int argc, char *argv[]) {
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/* discard queued events and kill workers */
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event_queue_cleanup(udev, EVENT_QUEUED);
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worker_kill(udev);
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worker_kill();
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/* exit after all has cleaned up */
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if (udev_list_node_is_empty(&event_list) && hashmap_isempty(workers))
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@ -1437,7 +1437,7 @@ int main(int argc, char *argv[]) {
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/* kill idle workers */
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if (udev_list_node_is_empty(&event_list)) {
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log_debug("cleanup idle workers");
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worker_kill(udev);
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worker_kill();
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}
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/* check for hanging events */
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@ -1494,7 +1494,7 @@ int main(int argc, char *argv[]) {
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/* reload requested, HUP signal received, rules changed, builtin changed */
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if (reload) {
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worker_kill(udev);
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worker_kill();
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rules = udev_rules_unref(rules);
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udev_builtin_exit(udev);
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reload = false;
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@ -1569,7 +1569,7 @@ int main(int argc, char *argv[]) {
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* exit.
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*/
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if (is_ctrl)
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ctrl_conn = handle_ctrl_msg(udev_ctrl);
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handle_ctrl_msg(udev_ctrl);
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}
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exit:
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@ -1589,7 +1589,7 @@ exit_daemonize:
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if (worker_watch[WRITE_END] >= 0)
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close(worker_watch[WRITE_END]);
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udev_monitor_unref(monitor);
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udev_ctrl_connection_unref(ctrl_conn);
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udev_ctrl_connection_unref(udev_ctrl_conn);
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udev_ctrl_unref(udev_ctrl);
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udev_list_cleanup(&properties_list);
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mac_selinux_finish();
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