[Qemu-devel] [PATCH v6 0/4] 9p: Fix file ID collisions

[Christian Schoenebeck via Qemu-devel <qemu-devel@nongnu.org>]

This is v6 of a proposed patch set for fixing file ID collisions with 9pfs.

v5->v6:

  * Rebased to https://github.com/gkurz/qemu/commits/9p-next
    (SHA1 177fd3b6a8).

  * Replaced previous boolean option 'remap_inodes' by tertiary option
    'multidevs=remap|forbid|warn', where 'warn' is the new/old default
    behaviour for not breaking existing installations:
    https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg07098.html

  * Dropped incomplete fix in v9fs_do_readdir() which aimed to prevent
    exposing info outside export root with '..' entry. Postponed this
    fix for now for the reasons described:
    https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg01862.html

Christian Schoenebeck (4):
  9p: Treat multiple devices on one export as an error
  9p: Added virtfs option 'multidevs=remap|forbid|warn'
  9p: stat_to_qid: implement slow path
  9p: Use variable length suffixes for inode remapping

 fsdev/file-op-9p.h      |   5 +
 fsdev/qemu-fsdev-opts.c |   7 +-
 fsdev/qemu-fsdev.c      |  11 ++
 hw/9pfs/9p.c            | 488 +++++++++++++++++++++++++++++++++++++++++++++---
 hw/9pfs/9p.h            |  51 +++++
 qemu-options.hx         |  33 +++-
 vl.c                    |   6 +-
 7 files changed, 565 insertions(+), 36 deletions(-)

-- 
2.11.0