From a95f038521d31e0158fc4115651d035e7482e1a2 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Thu, 21 Apr 2011 14:05:34 +0200
Subject: [PATCH] udevd, udev-event: sync waitpid() error handling

---
 NEWS              |  3 ++-
 udev/udev-event.c | 14 ++++++++++----
 udev/udevd.c      | 31 ++++++++++++++++++-------------
 3 files changed, 30 insertions(+), 18 deletions(-)

diff --git a/NEWS b/NEWS
index 27be44c5a..89b5b9c39 100644
--- a/NEWS
+++ b/NEWS
@@ -2,11 +2,12 @@ udev 168
 ========
 Bugfixes.
 
-warning if /run is not writable.
+warning if /run is not writable
 
 udevadm control --exit
 
 udevadm info --cleanup-db
+if used, OPTIONS+="db_persist" needed for LVM
 
 systemd netlink socket activation
 stop socket or mask on rpm update
diff --git a/udev/udev-event.c b/udev/udev-event.c
index ef21ce8f6..4af3e08f6 100644
--- a/udev/udev-event.c
+++ b/udev/udev-event.c
@@ -660,7 +660,7 @@ static int spawn_wait(struct udev_event *event, const char *cmd, pid_t pid)
 			goto out;
 		}
 		if (fdcount == 0) {
-			err(udev, "timeout: killing '%s'[%u]\n", cmd, pid);
+			err(udev, "timeout: killing '%s' [%u]\n", cmd, pid);
 			kill(pid, SIGKILL);
 		}
 
@@ -681,14 +681,20 @@ static int spawn_wait(struct udev_event *event, const char *cmd, pid_t pid)
 				if (waitpid(pid, &status, WNOHANG) < 0)
 					break;
 				if (WIFEXITED(status)) {
-					info(udev, "'%s'[%u] returned with exitcode %i\n", cmd, pid, WEXITSTATUS(status));
+					info(udev, "'%s' [%u] exit with return code %i\n", cmd, pid, WEXITSTATUS(status));
 					if (WEXITSTATUS(status) != 0)
 						err = -1;
 				} else if (WIFSIGNALED(status)) {
-					err(udev, "'%s'[%u] terminated by signal %i\n", cmd, pid, WTERMSIG(status));
+					err(udev, "'%s' [%u] terminated by signal %i (%s)\n", cmd, pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
+					err = -1;
+				} else if (WIFSTOPPED(status)) {
+					err(udev, "'%s' [%u] stopped\n", cmd, pid);
+					err = -1;
+				} else if (WIFCONTINUED(status)) {
+					err(udev, "'%s' [%u] continued\n", cmd, pid);
 					err = -1;
 				} else {
-					err(udev, "'%s'[%u] unexpected exit with status 0x%04x\n", cmd, pid, status);
+					err(udev, "'%s' [%u] exit with status 0x%04x\n", cmd, pid, status);
 					err = -1;
 				}
 				pid = 0;
diff --git a/udev/udevd.c b/udev/udevd.c
index 0e73f8106..be4b071eb 100644
--- a/udev/udevd.c
+++ b/udev/udevd.c
@@ -809,24 +809,29 @@ static void handle_signal(struct udev *udev, int signo)
 
 				if (worker->pid != pid)
 					continue;
-
 				info(udev, "worker [%u] exit\n", pid);
-				if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
-					if (WEXITSTATUS(status))
-						err(udev, "worker [%u] unexpectedly returned with status %d\n", pid, WEXITSTATUS(status));
-					else if (WIFSIGNALED(status))
-					  err(udev, "worker [%u] killed by signal %d (%s)\n", pid, 
-					      WTERMSIG(status), strsignal(WTERMSIG(status)));
-					else if (WIFSTOPPED(status))
-						err(udev, "worker [%u] unexpectedly stopped\n", pid);
-					else if (WIFCONTINUED(status))
-						err(udev, "worker [%u] continued\n", pid);
 
+				if (WIFEXITED(status)) {
+					if (WEXITSTATUS(status) != 0)
+						err(udev, "worker [%u] exit with return code %i\n", pid, WEXITSTATUS(status));
+				} else if (WIFSIGNALED(status)) {
+					err(udev, "worker [%u] terminated by signal %i (%s)\n",
+					    pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
+				} else if (WIFSTOPPED(status)) {
+					err(udev, "worker [%u] stopped\n", pid);
+				} else if (WIFCONTINUED(status)) {
+					err(udev, "worker [%u] continued\n", pid);
+				} else {
+					err(udev, "worker [%u] exit with status 0x%04x\n", pid, status);
+				}
+
+				if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
 					if (worker->event != NULL) {
-						err(udev, "worker [%u] failed while handling '%s'\n", pid, worker->event->devpath);
+						err(udev, "worker [%u] failed while handling '%s'\n",
+						    pid, worker->event->devpath);
 						worker->event->exitcode = -32;
 						event_queue_delete(worker->event, true);
-						/* drop reference from running event */
+						/* drop reference taken for state 'running' */
 						worker_unref(worker);
 					}
 				}
-- 
2.30.2