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| author | Sage Weil <sage@newdream.net> | 2010-10-29 15:46:43 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-10-29 21:42:10 -0400 |
| commit | 4260f7c7516f4c209cf0ca34fda99cc9a0847772 (patch) | |
| tree | 7feb5ab81d074b17a7c5b12bcc019c2e1bb010e2 /fs/btrfs/ctree.h | |
| parent | 531cb13f1e417c060b54f979e1659ecd69bea650 (diff) | |
| download | lwn-4260f7c7516f4c209cf0ca34fda99cc9a0847772.tar.gz lwn-4260f7c7516f4c209cf0ca34fda99cc9a0847772.zip | |
Btrfs: allow subvol deletion by unprivileged user with -o user_subvol_rm_allowed
Add a mount option user_subvol_rm_allowed that allows users to delete a
(potentially non-empty!) subvol when they would otherwise we allowed to do
an rmdir(2). We duplicate the may_delete() checks from the core VFS code
to implement identical security checks (minus the directory size check).
We additionally require that the user has write+exec permission on the
subvol root inode.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index e5d66b13c175..8db9234f6b41 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1234,6 +1234,7 @@ struct btrfs_root { #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) +#define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |