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namespaces: mqueue ns: move mqueue_mnt into struct ipc_namespace

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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 <[email protected]>
Signed-off-by: Serge E. Hallyn <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Serge E. Hallyn 2009-04-06 19:01:08 -07:00 • committed by Linus Torvalds
commit 614b84cf4e
7 changed files with 145 additions and 71 deletions
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16
ipc/util.h
View file

@ -20,6 +20,13 @@ void shm_init (void);
struct ipc_namespace;
#ifdef CONFIG_POSIX_MQUEUE
void mq_exit_ns(struct ipc_namespace *ns);
#else
static inline void mq_exit_ns(struct ipc_namespace *ns) { }
#endif
#ifdef CONFIG_SYSVIPC
void sem_init_ns(struct ipc_namespace *ns);
void msg_init_ns(struct ipc_namespace *ns);
void shm_init_ns(struct ipc_namespace *ns);
@ -27,6 +34,15 @@ void shm_init_ns(struct ipc_namespace *ns);
void sem_exit_ns(struct ipc_namespace *ns);
void msg_exit_ns(struct ipc_namespace *ns);
void shm_exit_ns(struct ipc_namespace *ns);
#else
static inline void sem_init_ns(struct ipc_namespace *ns) { }
static inline void msg_init_ns(struct ipc_namespace *ns) { }
static inline void shm_init_ns(struct ipc_namespace *ns) { }
static inline void sem_exit_ns(struct ipc_namespace *ns) { }
static inline void msg_exit_ns(struct ipc_namespace *ns) { }
static inline void shm_exit_ns(struct ipc_namespace *ns) { }
#endif
/*
* Structure that holds the parameters needed by the ipc operations