btrfs-progs: Check for open failure in btrfs_scan_lblkid()

open can fail, of course.

Resolves-Coverity-CID: 1125925
Resolves-Coverity-CID: 1125930
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/utils.c b/utils.c
index 9f476efd..3c74f690 100644
--- a/utils.c
+++ b/utils.c
@@ -1978,12 +1978,16 @@ int btrfs_scan_lblkid(int update_kernel)
 		dev = blkid_verify(cache, dev);
 		if (!dev)
 			continue;
-		/* if we are here its definitly a btrfs disk*/
+		/* if we are here its definitely a btrfs disk*/
 		strncpy(path, blkid_dev_devname(dev), PATH_MAX);
 		if (test_skip_this_disk(path))
 			continue;
 
 		fd = open(path, O_RDONLY);
+		if (fd < 0) {
+			printf("ERROR: could not open %s\n", path);
+			continue;
+		}
 		btrfs_scan_one_device(fd, path, &tmp_devices,
 				&num_devices, BTRFS_SUPER_INFO_OFFSET);
 		close(fd);