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authorTom Gundersen <teg@jklm.no>2015-05-11 22:17:49 +0200
committerTom Gundersen <teg@jklm.no>2015-05-12 00:43:45 +0200
commite4f66b7773ae21278bf6b9c02a3282eec5996266 (patch)
tree48c359276781ad29207177415254e058fa24b518 /src
parenteacd8534257516e4fea049c7562f05349529c476 (diff)
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.
Diffstat (limited to 'src')
-rw-r--r--src/shared/udev-util.h4
-rw-r--r--src/udev/udevd.c42
2 files changed, 25 insertions, 21 deletions
diff --git a/src/shared/udev-util.h b/src/shared/udev-util.h
index 5f09ce181f..f758ce13e4 100644
--- a/src/shared/udev-util.h
+++ b/src/shared/udev-util.h
@@ -30,6 +30,8 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_enumerate*, udev_enumerate_unref);
DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_event*, udev_event_unref);
DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_rules*, udev_rules_unref);
DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl*, udev_ctrl_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl_connection*, udev_ctrl_connection_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_ctrl_msg*, udev_ctrl_msg_unref);
DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
#define _cleanup_udev_unref_ _cleanup_(udev_unrefp)
@@ -38,5 +40,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
#define _cleanup_udev_event_unref_ _cleanup_(udev_event_unrefp)
#define _cleanup_udev_rules_unref_ _cleanup_(udev_rules_unrefp)
#define _cleanup_udev_ctrl_unref_ _cleanup_(udev_ctrl_unrefp)
+#define _cleanup_udev_ctrl_connection_unref_ _cleanup_(udev_ctrl_connection_unrefp)
+#define _cleanup_udev_ctrl_msg_unref_ _cleanup_(udev_ctrl_msg_unrefp)
#define _cleanup_udev_monitor_unref_ _cleanup_(udev_monitor_unrefp)
#define _cleanup_udev_list_cleanup_ _cleanup_(udev_list_cleanup)
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index ff36aaf2f1..27d8b125ca 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -53,6 +53,7 @@
static struct udev_rules *rules;
static struct udev_ctrl *udev_ctrl;
+static struct udev_ctrl_connection *udev_ctrl_conn;
static struct udev_monitor *monitor;
static int worker_watch[2] = { -1, -1 };
static int fd_signal = -1;
@@ -500,7 +501,7 @@ static int event_queue_insert(struct udev_device *dev) {
return 0;
}
-static void worker_kill(struct udev *udev) {
+static void worker_kill(void) {
struct worker *worker;
Iterator i;
@@ -677,26 +678,27 @@ static void worker_returned(int fd_worker) {
}
/* receive the udevd message from userspace */
-static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
- struct udev *udev = udev_ctrl_get_udev(uctrl);
- struct udev_ctrl_connection *ctrl_conn;
- struct udev_ctrl_msg *ctrl_msg = NULL;
+static void handle_ctrl_msg(struct udev_ctrl *uctrl) {
+ _cleanup_udev_ctrl_connection_unref_ struct udev_ctrl_connection *ctrl_conn = NULL;
+ _cleanup_udev_ctrl_msg_unref_ struct udev_ctrl_msg *ctrl_msg = NULL;
const char *str;
int i;
+ assert(uctrl);
+
ctrl_conn = udev_ctrl_get_connection(uctrl);
- if (ctrl_conn == NULL)
- goto out;
+ if (!ctrl_conn)
+ return;
ctrl_msg = udev_ctrl_receive_msg(ctrl_conn);
- if (ctrl_msg == NULL)
- goto out;
+ if (!ctrl_msg)
+ return;
i = udev_ctrl_get_set_log_level(ctrl_msg);
if (i >= 0) {
log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);
log_set_max_level(i);
- worker_kill(udev);
+ worker_kill();
}
if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {
@@ -738,7 +740,7 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
}
free(key);
}
- worker_kill(udev);
+ worker_kill();
}
i = udev_ctrl_get_set_children_max(ctrl_msg);
@@ -754,11 +756,10 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
log_debug("udevd message (EXIT) received");
udev_exit = true;
/* keep reference to block the client until we exit */
- udev_ctrl_connection_ref(ctrl_conn);
+ udev_ctrl_conn = udev_ctrl_connection_ref(ctrl_conn);
}
-out:
- udev_ctrl_msg_unref(ctrl_msg);
- return udev_ctrl_connection_unref(ctrl_conn);
+
+ return;
}
static int synthesize_change(struct udev_device *dev) {
@@ -1158,7 +1159,6 @@ int main(int argc, char *argv[]) {
struct epoll_event ep_signal = { .events = EPOLLIN };
struct epoll_event ep_netlink = { .events = EPOLLIN };
struct epoll_event ep_worker = { .events = EPOLLIN };
- struct udev_ctrl_connection *ctrl_conn = NULL;
int r = 0, one = 1;
udev = udev_new();
@@ -1397,7 +1397,7 @@ int main(int argc, char *argv[]) {
/* discard queued events and kill workers */
event_queue_cleanup(udev, EVENT_QUEUED);
- worker_kill(udev);
+ worker_kill();
/* exit after all has cleaned up */
if (udev_list_node_is_empty(&event_list) && hashmap_isempty(workers))
@@ -1437,7 +1437,7 @@ int main(int argc, char *argv[]) {
/* kill idle workers */
if (udev_list_node_is_empty(&event_list)) {
log_debug("cleanup idle workers");
- worker_kill(udev);
+ worker_kill();
}
/* check for hanging events */
@@ -1494,7 +1494,7 @@ int main(int argc, char *argv[]) {
/* reload requested, HUP signal received, rules changed, builtin changed */
if (reload) {
- worker_kill(udev);
+ worker_kill();
rules = udev_rules_unref(rules);
udev_builtin_exit(udev);
reload = false;
@@ -1569,7 +1569,7 @@ int main(int argc, char *argv[]) {
* exit.
*/
if (is_ctrl)
- ctrl_conn = handle_ctrl_msg(udev_ctrl);
+ handle_ctrl_msg(udev_ctrl);
}
exit:
@@ -1589,7 +1589,7 @@ exit_daemonize:
if (worker_watch[WRITE_END] >= 0)
close(worker_watch[WRITE_END]);
udev_monitor_unref(monitor);
- udev_ctrl_connection_unref(ctrl_conn);
+ udev_ctrl_connection_unref(udev_ctrl_conn);
udev_ctrl_unref(udev_ctrl);
udev_list_cleanup(&properties_list);
mac_selinux_finish();