[PATCH] udev - allow all files in a directory as the config

I was on the train for 5 hours today and the TODO is almost empty :)
So, at least four people wanted this feature, then here is a actual
working patch.

We may specify now in udev.conf:

  udev_rules="/etc/udev/"

and udev will scan the whole directory for files ending with *.rules,
sort it in lexical order and create our rule list from all of the files.
A plain given file will still work and the same applies to the *.permissions.

I sort the files in our usual linked list, cause klibc has no scandir().

1 files changed, 6 insertions, 2 deletions

diff --git a/udev.c b/udev.c
index 8c91ac62..1c65f2e5 100644
--- a/udev.c
+++ b/udev.c
@@ -111,13 +111,13 @@ static int udev_hotplug(int argc, char **argv)
 
 	action = get_action();
 	if (!action) {
-		dbg ("no action?");
+		dbg("no action?");
 		goto exit;
 	}
 
 	devpath = get_devpath();
 	if (!devpath) {
-		dbg ("no devpath?");
+		dbg("no devpath?");
 		goto exit;
 	}
 	dbg("looking at '%s'", devpath);
@@ -131,6 +131,10 @@ static int udev_hotplug(int argc, char **argv)
 
 	/* skip blacklisted subsystems */
 	subsystem = argv[1];
+	if (!subsystem) {
+		dbg("no subsystem?");
+		goto exit;
+	}
 	i = 0;
 	while (subsystem_blacklist[i][0] != '\0') {
 		if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {