Re: [PATCH RFC -next 00/12] landlock: Add READ_METADATA and WRITE_METADATA access rights

On Fri, Sep 25, 2026 at 11:33 AM Christian Brauner [off-list ref] wrote:

On Thu, Sep 24, 2026 at 06:48:19PM +0800, Cai Xinchen wrote:

quoted

This series adds two new Landlock filesystem access rights,
LANDLOCK_ACCESS_FS_READ_METADATA and LANDLOCK_ACCESS_FS_WRITE_METADATA,
which control access to file and directory metadata such as inode
attributes (mode, ownership, timestamps), extended attributes and POSIX
ACLs.  It picks up the work from the "landlock: add chmod and chown
support" series [1] and follows the coarse-grained grouping discussed in
that thread [2]: instead of separate chmod/chown rights, metadata
operations are grouped into one read and one write right.

This is mostly fine for me. @Michael, for the fs side of things I would
give you a stable branch vfs-7.*.shared.landlock.path that you can pull
once this is ready.

This is in my queue, but I haven't reviewed the changes yet.

@Christian, I'm guessing you will merge patches 1/12, 3/13, and 4/12
since those are the VFS changes?  Once you have a branch for that, and
we have all the necessary ACKs, I'll merge the LSM changes in 2/12,
5/12, 6/12, and 7/12 and then Mickaël can merge the Landlock patches.

Are we all okay with that?

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