linux.git/ipc/util.c, branch v2.6.29

sanitize audit_ipc_set_perm()

2009-01-04T20:14:40+00:00

* get rid of allocations
* make it return void
* simplify callers

Signed-off-by: Al Viro

sanitize audit_ipc_obj()

2009-01-04T20:14:39+00:00

* get rid of allocations
* make it return void
* simplify callers

Signed-off-by: Al Viro

Merge branch 'master' into next

2008-12-04T06:16:36+00:00

Conflicts:
	fs/nfsd/nfs4recover.c

Manually fixed above to use new creds API functions, e.g.
nfs4_save_creds().

Signed-off-by: James Morris

sysvipc: fix the ipc structures initialization

2008-11-20T02:49:57+00:00

A problem was found while reviewing the code after Bugzilla bug
http://bugzilla.kernel.org/show_bug.cgi?id=11796.

In ipc_addid(), the newly allocated ipc structure is inserted into the
ipcs tree (i.e made visible to readers) without locking it.  This is not
correct since its initialization continues after it has been inserted in
the tree.

This patch moves the ipc structure lock initialization + locking before
the actual insertion.

Signed-off-by: Nadia Derbey 
Reported-by: Clement Calmels 
Cc: Manfred Spraul 
Cc: 		[2.6.27.x]
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

CRED: Wrap task credential accesses in the SYSV IPC subsystem

2008-11-13T23:39:06+00:00

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells 
Reviewed-by: James Morris 
Acked-by: Serge Hallyn 
Signed-off-by: James Morris

ipc: get rid of ipc_lock_down()

2008-07-25T17:53:42+00:00

Remove the ipc_lock_down() routines: they used to call idr_find() locklessly
(given that the ipc ids lock was already held), so they are not needed
anymore.

Signed-off-by: Nadia Derbey 
Acked-by: "Paul E. McKenney" 
Cc: Manfred Spraul 
Cc: Jim Houston 
Cc: Pierre Peiffer 
Acked-by: Rik van Riel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ipc: call idr_find() without locking in ipc_lock()

2008-07-25T17:53:42+00:00

Call idr_find() locklessly from ipc_lock(), since the idr tree is now RCU
protected.

Signed-off-by: Nadia Derbey 
Acked-by: "Paul E. McKenney" 
Cc: Manfred Spraul 
Cc: Jim Houston 
Cc: Pierre Peiffer 
Acked-by: Rik van Riel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sysvipc: use non-racy method for proc entries creation

2008-04-29T15:06:20+00:00

Use proc_create_data() to make sure that ->proc_fops and ->data be setup
before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev 
Cc: Alexey Dobriyan 
Cc: "Eric W. Biederman" 
Cc: Nadia Derbey 
Cc: Pierre Peiffer 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ipc: add definitions of USHORT_MAX and others

2008-04-29T15:06:14+00:00

Add definitions of USHORT_MAX and others into kernel.  ipc uses it and slub
implementation might also use it.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Zhang Yanmin 
Reviewed-by: Christoph Lameter 
Cc: Nadia Derbey 
Cc: "Pierre Peiffer" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

IPC: consolidate all xxxctl_down() functions

2008-04-29T15:06:14+00:00

semctl_down(), msgctl_down() and shmctl_down() are used to handle the same set
of commands for each kind of IPC.  They all start to do the same job (they
retrieve the ipc and do some permission checks) before handling the commands
on their own.

This patch proposes to consolidate this by moving these same pieces of code
into one common function called ipcctl_pre_down().

It simplifies a little these xxxctl_down() functions and increases a little
the maintainability.

Signed-off-by: Pierre Peiffer 
Acked-by: Serge Hallyn 
Cc: Nadia Derbey 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds