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| author | Li Zefan <lizf@cn.fujitsu.com> | 2010-12-20 16:30:25 +0800 |
|---|---|---|
| committer | Li Zefan <lizf@cn.fujitsu.com> | 2010-12-23 08:49:19 +0800 |
| commit | 0caa102da82799efaba88e234484786a9591c797 (patch) | |
| tree | 748bb0d8054bb85256904ffe29913277e5b80684 /virt | |
| parent | b83cc9693f39689490970c19f6c5b866f6719a70 (diff) | |
Btrfs: Add BTRFS_IOC_SUBVOL_GETFLAGS/SETFLAGS ioctls
This allows us to set a snapshot or a subvolume readonly or writable
on the fly.
Usage:
Set BTRFS_SUBVOL_RDONLY of btrfs_ioctl_vol_arg_v2->flags, and then
call ioctl(BTRFS_IOCTL_SUBVOL_SETFLAGS);
Changelog for v3:
- Change to pass __u64 as ioctl parameter.
Changelog for v2:
- Add _GETFLAGS ioctl.
- Check if the passed fd is the root of a subvolume.
- Change the name from _SNAP_SETFLAGS to _SUBVOL_SETFLAGS.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions