[PATCH v2 0/9] add [GET/SET]_COMPRESSION ioctl support

[David Disseldorp]

This patch series adds support for the FSCTL_GET_COMPRESSION and
FSCTL_SET_COMPRESSION ioctls, as well as the reporting of the current
compression state via the FILE_ATTRIBUTE_COMPRESSED flag.

Hooks are added to the btrfs VFS module, which translates such requests
into corresponding FS_IOC_GETFLAGS and FS_IOC_SETFLAGS ioctls.

Changes since v1 following feedback from Jeremy (thanks Jeremy!):
- Only use smb_fname and fsp args with GET_COMPRESSION. The smb_fname
  argument is only needed for the dosmode() code-path, fsp is used
  everywhere else.
- Add an extra SetInfo(FILE_ATTRIBUTE_COMPRESSED) test.

Cheers, David

==

 docs-xml/manpages/vfs_full_audit.8.xml |   2 ++
 examples/VFS/skel_opaque.c             |  19 ++++++++++++++++++
 examples/VFS/skel_transparent.c        |  21 ++++++++++++++++++++
 source3/include/vfs.h                  |  19 ++++++++++++++++++
 source3/include/vfs_macros.h           |  12 ++++++++++-
 source3/modules/vfs_btrfs.c            | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 source3/modules/vfs_default.c          |  19 ++++++++++++++++++
 source3/modules/vfs_full_audit.c       |  40 +++++++++++++++++++++++++++++++++++++
 source3/modules/vfs_time_audit.c       |  53 +++++++++++++++++++++++++++++++++++++++++++++++++
 source3/smbd/dosmode.c                 |  90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------
 source3/smbd/open.c                    |  12 +++++++++++
 source3/smbd/smb2_ioctl_filesys.c      | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 source3/smbd/vfs.c                     |  21 ++++++++++++++++++++
 source3/wscript                        |   2 +-
 source4/torture/smb2/ioctl.c           | 144 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------
 15 files changed, 677 insertions(+), 28 deletions(-)