[v2,0/5] Prepare for fsnotify pre-content permission events

Message

Amir Goldstein Dec. 10, 2023, 2:18 p.m. UTC

Hi Christian,

This v2 of pre-content event prep patches addresses some comments and
replaces the v1 patches [1] that are currently applied to vfs.rw.

I started with a new cleanup patch for ssize_t return type that you
suggested.

Patch 2 has a fix for a build error reported by kernel tests robot
(moved MAX_RW_COUNT capping to splice_file_range()), so I did not
retain the RVBs for this patch.

Patches 3,4 are unchanged and retain their RVBs.

Patch 5 changes the fsnotify hook name, so RBVs not retained.

Thanks,
Amir.

Changes since v1 [1]:
- Move MAX_RW_COUNT capping to splice_file_range() to fix build error
- Cleanup splice helpers return type
- Change fsnotify hook name to fsnotify_file_area_perm()
- Add RVBs

[1] https://lore.kernel.org/r/[e-mail]/

Amir Goldstein (5):
  splice: return type ssize_t from all helpers
  fs: use splice_copy_file_range() inline helper
  fsnotify: split fsnotify_perm() into two hooks
  fsnotify: assert that file_start_write() is not held in permission
    hooks
  fsnotify: optionally pass access range in file permission hooks

 fs/ceph/file.c           |  4 +--
 fs/fuse/file.c           |  5 +--
 fs/nfs/nfs4file.c        |  5 +--
 fs/open.c                |  4 +++
 fs/overlayfs/copy_up.c   |  2 +-
 fs/read_write.c          | 46 ++++++---------------------
 fs/readdir.c             |  4 +++
 fs/remap_range.c         |  8 ++++-
 fs/smb/client/cifsfs.c   |  5 +--
 fs/splice.c              | 69 ++++++++++++++++++++--------------------
 include/linux/fs.h       |  3 --
 include/linux/fsnotify.h | 50 ++++++++++++++++++++---------
 include/linux/splice.h   | 50 ++++++++++++++++-------------
 io_uring/splice.c        |  4 +--
 security/security.c      | 10 ++----
 15 files changed, 138 insertions(+), 131 deletions(-)