diff options
Diffstat (limited to 'drivers/md/dm-thin.c')
| -rw-r--r-- | drivers/md/dm-thin.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 18d6a8a10d5d..aa7795990989 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -3292,6 +3292,13 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv) as.argc = argc; as.argv = argv; + /* make sure metadata and data are different devices */ + if (!strcmp(argv[0], argv[1])) { + ti->error = "Error setting metadata or data device"; + r = -EINVAL; + goto out_unlock; + } + /* * Set default pool features. */ @@ -4173,6 +4180,12 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) tc->sort_bio_list = RB_ROOT; if (argc == 3) { + if (!strcmp(argv[0], argv[2])) { + ti->error = "Error setting origin device"; + r = -EINVAL; + goto bad_origin_dev; + } + r = dm_get_device(ti, argv[2], FMODE_READ, &origin_dev); if (r) { ti->error = "Error opening origin device"; |