[PATCH] trivial cleanups and change some comments

2 files changed, 13 insertions, 6 deletions

diff --git a/udev.c b/udev.c
index 847cc5da..ca79bb4e 100644
--- a/udev.c
+++ b/udev.c
@@ -111,17 +111,22 @@ int main(int argc, char *argv[], char *envp[])
 	act.sa_handler = (void (*) (int))sig_handler;
 	sigemptyset (&act.sa_mask);
 	act.sa_flags = 0;
-	/* alarm must not restart syscalls*/
 	sigaction(SIGALRM, &act, NULL);
 	sigaction(SIGINT, &act, NULL);
 	sigaction(SIGTERM, &act, NULL);
 
-	/* trigger timeout to interrupt blocking syscalls */
+	/* trigger timeout to prevent hanging processes */
 	alarm(ALARM_TIMEOUT);
 
+	action = getenv("ACTION");
+	devpath = getenv("DEVPATH");
+	subsystem = getenv("SUBSYSTEM");
+	/* older kernels passed the SUBSYSTEM only as argument */
+	if (!subsystem && argc == 2)
+		subsystem = argv[1];
 	udev_init_device(&udev, devpath, subsystem);
 
-	if (strstr(argv[0], "udevstart") || (argv[1] != NULL && strstr(argv[1], "udevstart"))) {
+	if (strstr(argv[0], "udevstart") || (argc == 2 && strstr(argv[1], "udevstart"))) {
 		dbg("udevstart");
 
 		/* disable all logging, as it's much too slow on some facilities */
diff --git a/udev.h b/udev.h
index 2c5270a4..0703b884 100644
--- a/udev.h
+++ b/udev.h
@@ -50,14 +50,17 @@
 struct udevice {
 	char devpath[DEVPATH_SIZE];
 	char subsystem[SUBSYSTEM_SIZE];
+
 	char name[NAME_SIZE];
+	char symlink[NAME_SIZE];
 	char owner[OWNER_SIZE];
 	char group[GROUP_SIZE];
+	mode_t mode;
 	char type;
 	int major;
 	int minor;
-	mode_t mode;
-	char symlink[NAME_SIZE];
+
+	char devname[NAME_SIZE];
 	int partitions;
 	int ignore_remove;
 	int config_line;
@@ -67,7 +70,6 @@ struct udevice {
 	char program_result[NAME_SIZE];
 	char kernel_number[NAME_SIZE];
 	char kernel_name[NAME_SIZE];
-	char devname[NAME_SIZE];
 	int test_run;
 };