user/sven/linux-bitkeeper.git/ipc/msg.c, branch master

Audit IPC object owner/permission changes.

2005-03-01T09:15:37Z

Add linked list of auxiliary data to audit_context Add callbacks in IPC_SET functions to record requested changes. Signed-off-by: David Woodhouse

[PATCH] RCU: eliminating explicit memory barriers from SysV IPC

2004-10-28T01:28:37Z

This patch uses the rcu_assign_pointer() API to eliminate a number of explicit memory barriers from the SysV IPC code that uses RCU. It also restructures the ipc_ids structure so that the array size is stored in the same memory block as the array itself (see the new struct ipc_id_ary). This prevents the race that the earlier code was subject to, where a reader could see a mismatch between the size and the actual array. With the size stored with the array, the possibility of mismatch is eliminated -- with out the need for careful ordering and explicit memory barriers. This has been tested successfully on i386 and ppc64. Signed-off-by: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] add missing linux/syscalls.h includes

2004-10-18T15:54:02Z

I found that the prototypes for sys_waitid and sys_fcntl in don't match the implementation. In order to keep all prototypes in sync in the future, now include the header from each file implementing any syscall. Signed-off-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] cleanup of ipc/msg.c

2004-08-23T05:41:21Z

Attached is a cleanup of the main loops in sys_msgrcv and sys_msgsnd, based on ipc_lock_by_ptr(). Most backward gotos are gone, instead normal "for(;;)" loops until a suitable message is found. Description: - General cleanup of sys_msgrcv and sys_msgsnd: the function were too convoluted. - Enable lockless receive, update comments. - Use ipc_getref for sys_msgsnd(), it's better than rechecking that the msqid is still valid. Signed-Off-By: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] ipc: Add refcount to ipc_rcu_alloc

2004-08-23T05:40:37Z

The lifetime of the ipc objects (sem array, msg queue, shm mapping) is controlled by kern_ipc_perms->lock - a spinlock. There is no simple way to reacquire this spinlock after it was dropped to schedule()/kmalloc/copy_{to,from}_user/whatever. The attached patch adds a reference count as a preparation to get rid of sem_revalidate(). Signed-Off-By: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] sparse: NULL vs 0 - the rest of it

2004-06-30T08:52:08Z

[PATCH] sparse: ipc __user annotation

2004-05-29T04:12:47Z

[PATCH] posix message queues: code move

2004-04-12T05:53:50Z

From: Manfred Spraul cleanup of sysv ipc as a preparation for posix message queues: - replace !CONFIG_SYSVIPC wrappers for copy_semundo and exit_sem with static inline wrappers. Now the whole ipc/util.c file is only used if CONFIG_SYSVIPC is set, use makefile magic instead of #ifdef. - remove the prototypes for copy_semundo and exit_sem from kernel/fork.c - they belong into a header file. - create a new msgutil.c with the helper functions for message queues. - cleanup the helper functions: run Lindent, add __user tags.

[PATCH] Fix error checking in IPC_SET

2004-01-26T00:52:24Z

The LSM changes broke the error checking for queue lengths in IPC_SET. The LSM check would set set err to 0, but the next check expected it to still be -EPERM. Result was that no error was reported, but the new parameters weren't correctly set.

[PATCH] ipc msg race fix

2003-10-22T01:23:17Z

Backport this fix from 2.4