X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevd.c;h=2129d3c66a3751c906ecf3e908ae10b737c67876;hp=8a352e1eb9f52b07f4d9b6cd71d09e16e94eb158;hb=750d10daacfc0285f83204161811f5e2ea531712;hpb=f5f0c34f6dc32769fd788560ce0d0cac843872b2

diff --git a/udevd.c b/udevd.c
index 8a352e1eb..2129d3c66 100644
--- a/udevd.c
+++ b/udevd.c
@@ -100,6 +100,13 @@ static int udev_event_process(struct uevent_msg *msg)
 	act.sa_flags = 0;
 	sigaction(SIGALRM, &act, NULL);
 
+	/* reset to default */
+	act.sa_handler = SIG_DFL;
+	sigaction(SIGINT, &act, NULL);
+	sigaction(SIGTERM, &act, NULL);
+	sigaction(SIGCHLD, &act, NULL);
+	sigaction(SIGHUP, &act, NULL);
+
 	/* trigger timeout to prevent hanging processes */
 	alarm(UDEV_ALARM_TIMEOUT);
 
@@ -117,9 +124,10 @@ static int udev_event_process(struct uevent_msg *msg)
 	retval = udev_device_event(&rules, udev);
 
 	/* run programs collected by RUN-key*/
-	if (retval == 0) {
+	if (retval == 0 && !udev->ignore_device && udev_run) {
 		struct name_entry *name_loop;
 
+		dbg("executing run list");
 		list_for_each_entry(name_loop, &udev->run_list, node) {
 			if (strncmp(name_loop->name, "socket:", strlen("socket:")) == 0)
 				pass_env_to_socket(&name_loop->name[strlen("socket:")], msg->devpath, msg->action);
@@ -127,7 +135,7 @@ static int udev_event_process(struct uevent_msg *msg)
 				char program[PATH_SIZE];
 
 				strlcpy(program, name_loop->name, sizeof(program));
-				apply_format(udev, program, sizeof(program));
+				udev_rules_apply_format(udev, program, sizeof(program));
 				if (run_program(program, udev->dev->subsystem, NULL, 0, NULL,
 						(udev_log_priority >= LOG_INFO)))
 					retval = -1;
@@ -199,6 +207,10 @@ static void export_event_state(struct uevent_msg *msg, enum event_state state)
 			if (loop_msg->devpath && strcmp(loop_msg->devpath, msg->devpath) == 0)
 				return;
 
+		list_for_each_entry(loop_msg, &exec_list, node)
+			if (loop_msg->devpath && strcmp(loop_msg->devpath, msg->devpath) == 0)
+				return;
+
 		/* move failed events to the failed directory */
 		if (state == EVENT_FAILED) {
 			create_path(filename_failed);
@@ -267,8 +279,23 @@ static void udev_event_run(struct uevent_msg *msg)
 
 static void msg_queue_insert(struct uevent_msg *msg)
 {
+	char filename[PATH_SIZE];
+	int fd;
+
 	msg->queue_time = time(NULL);
 
+	strlcpy(filename, udev_root, sizeof(filename));
+	strlcat(filename, "/" EVENT_SEQNUM, sizeof(filename));
+	fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
+	if (fd > 0) {
+		char str[32];
+		int len;
+
+		len = sprintf(str, "%llu\n", msg->seqnum);
+		write(fd, str, len);
+		close(fd);
+	}
+
 	export_event_state(msg, EVENT_QUEUED);
 
 	/* run all events with a timeout set immediately */
@@ -526,7 +553,6 @@ static struct uevent_msg *get_msg_from_envbuf(const char *buf, int buf_size)
 		free(msg);
 		return NULL;
 	}
-
 	return msg;
 }
 
@@ -580,7 +606,6 @@ static struct uevent_msg *get_udevd_msg(void)
 
 	switch (usend_msg.type) {
 	case UDEVD_UEVENT_UDEVSEND:
-	case UDEVD_UEVENT_INITSEND:
 		info("udevd event message received");
 		envbuf_size = size - offsetof(struct udevd_msg, envbuf);
 		dbg("envbuf_size=%i", envbuf_size);
@@ -911,12 +936,24 @@ int main(int argc, char *argv[], char *envp[])
 		err("error getting pipes: %s", strerror(errno));
 		goto exit;
 	}
-	retval = fcntl(signal_pipe[READ_END], F_SETFL, O_NONBLOCK);
+
+	retval = fcntl(signal_pipe[READ_END], F_GETFL, 0);
 	if (retval < 0) {
 		err("error fcntl on read pipe: %s", strerror(errno));
 		goto exit;
 	}
-	retval = fcntl(signal_pipe[WRITE_END], F_SETFL, O_NONBLOCK);
+	retval = fcntl(signal_pipe[READ_END], F_SETFL, retval | O_NONBLOCK);
+	if (retval < 0) {
+		err("error fcntl on read pipe: %s", strerror(errno));
+		goto exit;
+	}
+
+	retval = fcntl(signal_pipe[WRITE_END], F_GETFL, 0);
+	if (retval < 0) {
+		err("error fcntl on write pipe: %s", strerror(errno));
+		goto exit;
+	}
+	retval = fcntl(signal_pipe[WRITE_END], F_SETFL, retval | O_NONBLOCK);
 	if (retval < 0) {
 		err("error fcntl on write pipe: %s", strerror(errno));
 		goto exit;
@@ -934,8 +971,12 @@ int main(int argc, char *argv[], char *envp[])
 
 	/* watch rules directory */
 	inotify_fd = inotify_init();
-	if (inotify_fd > 0)
+	if (inotify_fd >= 0)
 		inotify_add_watch(inotify_fd, udev_rules_filename, IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
+	else if (errno == ENOSYS)
+		err("the kernel does not support inotify, udevd can't monitor configuration file changes");
+	else
+		err("inotify_init failed: %s", strerror(errno));
 
 	/* maximum limit of forked childs */
 	value = getenv("UDEVD_MAX_CHILDS");