From: Eric Sandeen <sandeen@redhat.com>
Date: Tue, 19 Jun 2018 20:43:02 +0000 (-0500)
Subject: mkfs: check config realpath for errors
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=febdf6d9436ae279082d97fa74367b7e0c8cf08a;p=thirdparty%2Fxfsprogs-dev.git

mkfs: check config realpath for errors

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---

diff --git a/mkfs/config.c b/mkfs/config.c
index 3a389adee..9954691b0 100644
--- a/mkfs/config.c
+++ b/mkfs/config.c
@@ -573,7 +573,8 @@ open_config_file(
 			goto out;
 		}
 		/* Get absolute path to this file */
-		realpath(config_file, *fpath);
+		if (!realpath(config_file, *fpath))
+			goto out;
 		fd = openat(AT_FDCWD, config_file, O_NOFOLLOW, O_RDONLY);
 	}