linux-toradex.git/include/linux/coda_psdev.h, branch v4.6-rc6

coda: Restrict coda messages to the initial user namespace

2013-02-13T14:00:53+00:00

Remove the slight chance that uids and gids in coda messages will be
interpreted in the wrong user namespace.

- Only allow processes in the initial user namespace to open the coda
  character device to communicate with coda filesystems.
- Explicitly convert the uids in the coda header into the initial user
  namespace.
- In coda_vattr_to_attr make kuids and kgids from the initial user
  namespace uids and gids in struct coda_vattr that just came from
  userspace.
- In coda_iattr_to_vattr convert kuids and kgids into uids and gids
  in the intial user namespace and store them in struct coda_vattr for
  sending to coda userspace programs.

Nothing needs to be changed with mounts as coda does not support
being mounted in anything other than the initial user namespace.

Cc: Jan Harkes 
Signed-off-by: "Eric W. Biederman"

UAPI: (Scripted) Disintegrate include/linux

2012-10-13T09:46:48+00:00

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Michael Kerrisk 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones

Coda: replace BKL with mutex

2010-10-25T15:02:40+00:00

Replace the BKL with a mutex to protect the venus_comm structure which
binds the mountpoint with the character device and holds the upcall
queues.

Signed-off-by: Yoshihisa Abe 
Signed-off-by: Jan Harkes 
Signed-off-by: Linus Torvalds

Coda: push BKL regions into coda_upcall()

2010-10-25T15:02:40+00:00

Now that shared inode state is locked using the cii->c_lock, the BKL is
only used to protect the upcall queues used to communicate with the
userspace cache manager. The remaining state is all local and we can
push the lock further down into coda_upcall().

Signed-off-by: Yoshihisa Abe 
Signed-off-by: Jan Harkes 
Signed-off-by: Linus Torvalds

coda: fixup clash with block layer REQ_* defines

2010-08-07T16:53:13+00:00

CODA should not be using defines in the global name space of
that nature, prefix them with CODA_.

Signed-off-by: Jens Axboe

coda: move backing-dev.h kernel include inside KERNEL

2010-04-28T07:20:33+00:00

Otherwise we must export backing-dev.h as well, which doesn't make
any sense.

Signed-off-by: Jens Axboe

coda: add bdi backing to mount session

2010-04-22T10:12:40+00:00

This ensures that dirty data gets flushed properly.

Signed-off-by: Jens Axboe

headers_check fix cleanup: linux/coda_psdev.h

2009-02-03T14:02:24+00:00

These are only for kernel internals as pointed by Arnd Bergmann:
  struct kstatfs
  struct venus_comm
  coda_vcp()

Signed-off-by: Jaswinder Singh Rajput

headers_check fix: linux/coda_psdev.h

2009-02-02T16:10:10+00:00

fix the following 'make headers_check' warning:

  usr/include/linux/coda_psdev.h:90: extern's make no sense in userspace

Signed-off-by: Jaswinder Singh Rajput

coda: remove CODA_STORE/CODA_RELEASE upcalls

2007-07-22T00:49:14+00:00

This is an variation on the patch sent by Christoph Hellwig which kills
file_count abuse by the Coda kernel module by moving the coda_flush
functionality into coda_release.  However part of reason we were using the
coda_flush callback was to allow Coda to pass errors that occur during
writeback from the userspace cache manager back to close().

As Al Viro explained on linux-fsdevel, it is impossible to guarantee that
such errors can in fact be returned back to the caller.  There are many
cases where the last reference to a file is not released by the close
system call and it is also impossible to pick some close as a 'last-close'
and delay it until all other references have been destroyed.

The CODA_STORE/CODA_RELEASE upcall combination is clearly a broken design,
and it is better to remove it completely.

Signed-off-by: Jan Harkes 
Cc: Christoph Hellwig 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds