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authorAnand Jain <[email protected]>2016-02-13 10:01:37 +0800
committerDavid Sterba <[email protected]>2016-04-28 10:59:13 +0200
commitb3d1b1532ff9620ff5dba891a96f3e912005eb10 (patch)
tree50ca54581e2527399b16d4b7b6825a99ab5d617b
parent24fc572fe456c02ff4136c07861a3edd4b8de683 (diff)
btrfs: enhance btrfs_find_device_by_user_input() to check device path
The operation of device replace and device delete follows same steps upto some depth with in btrfs kernel, however they don't share codes. This enhancement will help replace and delete to share codes. Signed-off-by: Anand Jain <[email protected]> Signed-off-by: David Sterba <[email protected]>
-rw-r--r--fs/btrfs/dev-replace.c4
-rw-r--r--fs/btrfs/volumes.c3
2 files changed, 3 insertions, 4 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 7ad8ae994ca0..fdd2880707df 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -320,10 +320,6 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
return -EINVAL;
}
- if ((args->start.srcdevid == 0 && args->start.srcdev_name[0] == '\0') ||
- args->start.tgtdev_name[0] == '\0')
- return -EINVAL;
-
/* the disk copy procedure reuses the scrub code */
mutex_lock(&fs_info->volume_mutex);
ret = btrfs_find_device_by_user_input(root, args->start.srcdevid,
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 40bbe0a2715b..d74260567bea 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2113,6 +2113,9 @@ int btrfs_find_device_by_user_input(struct btrfs_root *root, u64 srcdevid,
if (!*device)
ret = -ENOENT;
} else {
+ if (!srcdev_name || !srcdev_name[0])
+ return -EINVAL;
+
ret = btrfs_find_device_missing_or_by_path(root, srcdev_name,
device);
}