mdmon: expand permissible container device names

Allow any path that dereferences to an md device to be used in addition
to the current symbolic md device names.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 18 insertions, 3 deletions

diff --git a/mdmon.c b/mdmon.c
index d39b88cb..5aad763 100644
--- a/mdmon.c
+++ b/mdmon.c
@@ -306,9 +306,24 @@ int main(int argc, char *argv[])
 		usage();
 	}
 
-	devnum = devname2devnum(container_name);
-	devname = devnum2devname(devnum);
-	if (strcmp(container_name, devname) != 0) {
+	if (strncmp(container_name, "md", 2) == 0) {
+		devnum = devname2devnum(container_name);
+		devname = devnum2devname(devnum);
+		if (strcmp(container_name, devname) != 0)
+			devname = NULL;
+	} else {
+		struct stat st;
+
+		devnum = NoMdDev;
+		if (stat(container_name, &st) == 0)
+			devnum = stat2devnum(&st);
+		if (devnum == NoMdDev)
+			devname = NULL;
+		else
+			devname = devnum2devname(devnum);
+	}
+
+	if (!devname) {
 		fprintf(stderr, "mdmon: %s is not a valid md device name\n",
 			container_name);
 		exit(1);