[dm-devel] [PATCH 31/78] multipath: check for running daemon when called with '-u'

[Hannes Reinecke]

When multipath is called to check for a valid device it really
should check if the daemon is running. Otherwise it'll blindly
assume the device to be eligible for multipathing even though
the daemon isn't running.

Signed-off-by: Hannes Reinecke <hare at suse.de>
---
 multipath/main.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/multipath/main.c b/multipath/main.c
index 08ba66c..ce8fb5b 100644
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -56,6 +56,7 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <wwids.h>
+#include <uxsock.h>
 #include "dev_t.h"
 
 int logsink;
@@ -622,6 +623,18 @@ main (int argc, char *argv[])
 		condlog(0, "the -c option requires a path to check");
 		goto out;
 	}
+	if (conf->cmd == CMD_VALID_PATH &&
+	    conf->dev_type == DEV_UEVENT) {
+		int fd;
+
+		fd = ux_socket_connect(DEFAULT_SOCKET);
+		if (fd == -1) {
+			printf("%s is not a valid multipath device path\n",
+				conf->dev);
+			goto out;
+		}
+		close(fd);
+	}
 	if (conf->cmd == CMD_REMOVE_WWID && !conf->dev) {
 		condlog(0, "the -w option requires a device");
 		goto out;
-- 
1.8.4.5