namespaces: mqueue ns: move mqueue_mnt into struct ipc_namespace

Move mqueue vfsmount plus a few tunables into the ipc_namespace struct.
The CONFIG_IPC_NS boolean and the ipc_namespace struct will serve both the
posix message queue namespaces and the SYSV ipc namespaces.

The sysctl code will be fixed separately in patch 3.  After just this
patch, making a change to posix mqueue tunables always changes the values
in the initial ipc namespace.

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Serge E. Hallyn
2009-04-06 19:01:08 -07:00
committed by Linus Torvalds
parent 909e6d9479
commit 614b84cf4e
7 changed files with 145 additions and 71 deletions

View File

@@ -13,10 +13,32 @@
#include <linux/security.h>
#include <linux/slab.h>
#include <linux/ipc.h>
#include <linux/ipc_namespace.h>
#include <asm/uaccess.h>
#include "util.h"
/*
* The next 2 defines are here bc this is the only file
* compiled when either CONFIG_SYSVIPC and CONFIG_POSIX_MQUEUE
* and not CONFIG_IPC_NS.
*/
struct ipc_namespace init_ipc_ns = {
.kref = {
/* It's not for this patch to change, but should this be 1? */
.refcount = ATOMIC_INIT(2),
},
#ifdef CONFIG_POSIX_MQUEUE
.mq_mnt = NULL,
.mq_queues_count = 0,
.mq_queues_max = DFLT_QUEUESMAX,
.mq_msg_max = DFLT_MSGMAX,
.mq_msgsize_max = DFLT_MSGSIZEMAX,
#endif
};
atomic_t nr_ipc_ns = ATOMIC_INIT(1);
struct msg_msgseg {
struct msg_msgseg* next;
/* the next part of the message follows immediately */