[dm-devel] [PATCH 1/6] Fix for uevent devpath handling

[Benjamin Marzinski <bmarzins redhat com>]

This is necessary to make uevents work on fedora, since devpath appears as
something like:
'/devices/pci0000:00/0000:00:0a.0/0000:06:00.0/host11/rport-11:0-1/target11:0:1/11:0:1:0/block/sdi'

It simply strips off the everything up to the /block.

Signed-off-by: Benjamin Marzinski <bmarzins redhat com>
---
 multipathd/main.c |   12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

Index: multipath-tools-081203/multipathd/main.c
===================================================================
--- multipath-tools-081203.orig/multipathd/main.c
+++ multipath-tools-081203/multipathd/main.c
@@ -603,14 +603,20 @@ uxsock_trigger (char * str, char ** repl
 static int
 uev_discard(char * devpath)
 {
+	char *tmp;
 	char a[10], b[10];
 
 	/*
 	 * keep only block devices, discard partitions
 	 */
-	if (sscanf(devpath, "/block/%10s", a) != 1 ||
-	    sscanf(devpath, "/block/%10[^/]/%10s", a, b) == 2) {
-		condlog(4, "discard event on %s", devpath);
+	tmp = strstr(devpath, "/block/");
+	if (tmp == NULL){
+		condlog(0, "no /block/ in '%s'", devpath);
+		return 1;
+	}
+	if (sscanf(tmp, "/block/%10s", a) != 1 ||
+	    sscanf(tmp, "/block/%10[^/]/%10s", a, b) == 2) {
+		condlog(0, "discard event on %s", devpath);
 		return 1;
 	}
 	return 0;