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(parent: 0660b5a) | patch
Btrfs: prevent loops in the directory tree when creating snapshots
authorChris Mason <chris.mason@oracle.com>
Tue, 18 Nov 2008 02:14:24 +0000 (21:14 -0500)
committerChris Mason <chris.mason@oracle.com>
Tue, 18 Nov 2008 02:14:24 +0000 (21:14 -0500)
commitea9e8b11bd1252dcbc23afefcf1a52ec6aa3c113
tree3573c8d79e1936e8c921a3be77abda35124e0d78tree | snapshot
parent0660b5af3f7ac0fac69de975914e1f4a3a586fb3commit | diff
Btrfs: prevent loops in the directory tree when creating snapshots

For a directory tree:

/mnt/subvolA/subvolB

btrfsctl -s /mnt/subvolA/subvolB /mnt

Will create a directory loop with subvolA under subvolB.  This
commit uses the forward refs for each subvol and snapshot to error out
before creating the loop.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/ctree.h diff | blob | history
fs/btrfs/disk-io.c diff | blob | history
fs/btrfs/ioctl.c diff | blob | history
fs/btrfs/root-tree.c diff | blob | history
John Crispins staging tree