From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 8 Dec 2008 14:34:28 +0000 (+0100)
Subject: blkid: Refuse to create a device structure for a non-existent device
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1de91705bd6bb477e5d371f056445b746977311e;p=util-linux

blkid: 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.

[kzak@redhat.com: port from e2fsprogs to util-linux-ng tree]

Addresses-Debian-Bug: #502541
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libs/blkid/src/devname.c b/libs/blkid/src/devname.c
index a9e01cd4..101055d8 100644
--- a/libs/blkid/src/devname.c
+++ b/libs/blkid/src/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;