Scrub can be invoked to scrub only a single device of a (mounted) filesystem.
The code determines whether the given path is a mountpoint of a filesystem
by issueing a btrfs-specific ioctl to it. Only in case of EINVAL it assumed
it may be a device, all other errnos just caused it fail, but some devices
(correctly) return ENOTTY. This patch adds this to the error check.
Signed-off-by: Arne Jansen <sensille@xxxxxxx>
---
scrub.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/scrub.c b/scrub.c
index 9dca5f6..ca7cce7 100644
--- a/scrub.c
+++ b/scrub.c
@@ -987,7 +987,7 @@ static int scrub_fs_info(int fd, char *path,
memset(fi_args, 0, sizeof(*fi_args));
ret = ioctl(fd, BTRFS_IOC_FS_INFO, fi_args);
- if (ret && errno == EINVAL) {
+ if (ret && (errno == EINVAL || errno == ENOTTY)) {
/* path is no mounted btrfs. try if it's a device */
ret = check_mounted_where(fd, path, mp, sizeof(mp),
&fs_devices_mnt);
--
1.7.3.4
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