From: Karel Zak <kzak@redhat.com>
Date: Wed, 3 Apr 2013 11:32:39 +0000 (+0200)
Subject: lib/canonicalize: don't use /dev/mapper/<name> if the node does not exist
X-Git-Tag: v2.23-rc2~83
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4e5262e450a7ca2835d6c64edef8df0ad24f75a9;p=thirdparty%2Futil-linux.git

lib/canonicalize: don't use /dev/mapper/<name> if the node does not exist

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/lib/canonicalize.c b/lib/canonicalize.c
index 1e8aff4f2b..b70acd18c6 100644
--- a/lib/canonicalize.c
+++ b/lib/canonicalize.c
@@ -159,7 +159,9 @@ canonicalize_dm_name(const char *ptname)
 	if (fgets(name, sizeof(name), f) && (sz = strlen(name)) > 1) {
 		name[sz - 1] = '\0';
 		snprintf(path, sizeof(path), "/dev/mapper/%s", name);
-		res = strdup(path);
+
+		if (access(path, F_OK) == 0)
+			res = strdup(path);
 	}
 	fclose(f);
 	return res;