From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 18 Oct 2008 20:47:46 +0000 (-0400)
Subject: libblkid: Refuse to create a device structure for a non-existent device
X-Git-Tag: v1.41.4~49
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fe144e11e961a8fb2c568f486bd5bcd49582e24f;p=thirdparty%2Fe2fsprogs.git

libblkid: Refuse to create a device structure for a non-existent device

Fix blkid_get_dev() so it will never return a device structure if the
device file doesn't exist.

Addresses-Debian-Bug: #502541

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/lib/blkid/devname.c b/lib/blkid/devname.c
index f0e127cf1..e338c950c 100644
--- a/lib/blkid/devname.c
+++ b/lib/blkid/devname.c
@@ -65,6 +65,8 @@ blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, int flags)
 	}
 
 	if (!dev && (flags & BLKID_DEV_CREATE)) {
+		if (access(devname, F_OK) < 0)
+			return NULL;
 		dev = blkid_new_dev();
 		if (!dev)
 			return NULL;