diff options
Diffstat (limited to 'udev')
| -rw-r--r-- | udev/Makefile.am | 1 | ||||
| -rw-r--r-- | udev/udev.h | 3 | ||||
| -rw-r--r-- | udev/udevd.c | 64 |
3 files changed, 42 insertions, 26 deletions
diff --git a/udev/Makefile.am b/udev/Makefile.am index 84a4451446..fc97aad044 100644 --- a/udev/Makefile.am +++ b/udev/Makefile.am @@ -21,7 +21,6 @@ common_files = \ udev-rules.c \ udev-rules-parse.c \ udev-util.c \ - list.h \ lib/libudev.h \ lib/libudev-private.h \ lib/libudev.c \ diff --git a/udev/udev.h b/udev/udev.h index e5c7cd192f..5030972d9b 100644 --- a/udev/udev.h +++ b/udev/udev.h @@ -25,7 +25,6 @@ #include "udev-sysdeps.h" #include "lib/libudev.h" #include "lib/libudev-private.h" -#include "list.h" #define ALLOWED_CHARS "#+-.:=@_" #define ALLOWED_CHARS_FILE ALLOWED_CHARS "/" @@ -86,7 +85,7 @@ struct udev_event { int ignore_device; int test; - struct list_head node; + struct udev_list_node node; pid_t pid; int exitstatus; time_t queue_time; diff --git a/udev/udevd.c b/udev/udevd.c index 0c82e56dc5..576f9e8233 100644 --- a/udev/udevd.c +++ b/udev/udevd.c @@ -72,8 +72,8 @@ static int run_exec_q; static int stop_exec_q; static int max_childs; -static LIST_HEAD(exec_list); -static LIST_HEAD(running_list); +static struct udev_list_node exec_list; +static struct udev_list_node running_list; enum event_state { EVENT_QUEUED, @@ -81,6 +81,15 @@ enum event_state { EVENT_FAILED, }; +static struct udev_event *node_to_event(struct udev_list_node *node) +{ + char *event; + + event = (char *)node; + event -= offsetof(struct udev_event, node); + return (struct udev_event *)event; +} + static void export_event_state(struct udev_event *event, enum event_state state) { char filename[UTIL_PATH_SIZE]; @@ -144,7 +153,7 @@ static void export_event_state(struct udev_event *event, enum event_state state) static void event_queue_delete(struct udev_event *event) { - list_del(&event->node); + udev_list_node_remove(&event->node); /* mark as failed, if "add" event returns non-zero */ if (event->exitstatus && strcmp(udev_device_get_action(event->dev), "add") == 0) @@ -255,7 +264,7 @@ static void event_queue_insert(struct udev_event *event) /* run one event after the other in debug mode */ if (debug_trace) { - list_add_tail(&event->node, &running_list); + udev_list_node_append(&event->node, &running_list); event_fork(event); waitpid(event->pid, NULL, 0); event_queue_delete(event); @@ -264,12 +273,12 @@ static void event_queue_insert(struct udev_event *event) /* run all events with a timeout set immediately */ if (udev_device_get_timeout(event->dev) > 0) { - list_add_tail(&event->node, &running_list); + udev_list_node_append(&event->node, &running_list); event_fork(event); return; } - list_add_tail(&event->node, &exec_list); + udev_list_node_append(&event->node, &exec_list); run_exec_q = 1; } @@ -324,11 +333,13 @@ static int compare_devpath(const char *running, const char *waiting) /* lookup event for identical, parent, child, or physical device */ static int devpath_busy(struct udev_event *event, int limit) { - struct udev_event *loop_event; + struct udev_list_node *loop; int childs_count = 0; /* check exec-queue which may still contain delayed events we depend on */ - list_for_each_entry(loop_event, &exec_list, node) { + udev_list_node_foreach(loop, &exec_list) { + struct udev_event *loop_event = node_to_event(loop); + /* skip ourself and all later events */ if (udev_device_get_seqnum(loop_event->dev) >= udev_device_get_seqnum(event->dev)) break; @@ -372,8 +383,8 @@ static int devpath_busy(struct udev_event *event, int limit) } /* check run queue for still running events */ - list_for_each_entry(loop_event, &running_list, node) { - childs_count++; + udev_list_node_foreach(loop, &running_list) { + struct udev_event *loop_event = node_to_event(loop); if (childs_count++ >= limit) { info(event->udev, "%llu, maximum number (%i) of childs reached\n", @@ -424,13 +435,15 @@ static int devpath_busy(struct udev_event *event, int limit) /* serializes events for the identical and parent and child devices */ static void event_queue_manager(struct udev *udev) { - struct udev_event *loop_event; - struct udev_event *tmp_event; + struct udev_list_node *loop; + struct udev_list_node *tmp; - if (list_empty(&exec_list)) + if (udev_list_is_empty(&exec_list)) return; - list_for_each_entry_safe(loop_event, tmp_event, &exec_list, node) { + udev_list_node_foreach_safe(loop, tmp, &exec_list) { + struct udev_event *loop_event = node_to_event(loop); + /* serialize and wait for parent or child events */ if (devpath_busy(loop_event, max_childs) != 0) { dbg(udev, "delay seq %llu (%s)\n", @@ -440,7 +453,8 @@ static void event_queue_manager(struct udev *udev) } /* move event to run list */ - list_move_tail(&loop_event->node, &running_list); + udev_list_node_remove(&loop_event->node); + udev_list_node_append(&loop_event->node, &running_list); event_fork(loop_event); dbg(udev, "moved seq %llu to running list\n", udev_device_get_seqnum(loop_event->dev)); } @@ -537,16 +551,18 @@ static void asmlinkage sig_handler(int signum) static void udev_done(int pid, int exitstatus) { + struct udev_list_node *loop; + /* find event associated with pid and delete it */ - struct udev_event *event; + udev_list_node_foreach(loop, &running_list) { + struct udev_event *loop_event = node_to_event(loop); - list_for_each_entry(event, &running_list, node) { - if (event->pid == pid) { - info(event->udev, "seq %llu cleanup, pid [%d], status %i, %ld seconds old\n", - udev_device_get_seqnum(event->dev), event->pid, - exitstatus, time(NULL) - event->queue_time); - event->exitstatus = exitstatus; - event_queue_delete(event); + if (loop_event->pid == pid) { + info(loop_event->udev, "seq %llu cleanup, pid [%d], status %i, %ld seconds old\n", + udev_device_get_seqnum(loop_event->dev), loop_event->pid, + exitstatus, time(NULL) - loop_event->queue_time); + loop_event->exitstatus = exitstatus; + event_queue_delete(loop_event); /* there may be events waiting with the same devpath */ run_exec_q = 1; @@ -733,6 +749,8 @@ int main(int argc, char *argv[]) goto exit; } + udev_list_init(&running_list); + udev_list_init(&exec_list); udev_rules_init(udev, &rules, 1); export_initial_seqnum(udev); |