ipc_lock_object

Name:ipc_lock_object

Proto:static inline void ipc_lock_object(struct kern_ipc_perm *perm)

Type:void

Parameter:

Type	Parameter	Name
struct kern_ipc_perm *	perm

209

spin_lock( & lock)

**Caller**
Name	Describe
ipc_findkey	pc_findkey - find a key in an ipc identifier set@ids: ipc identifier set@key: key to find* Returns the locked pointer to the ipc structure if found or NULL* otherwise. If key is found ipc points to the owning ipc structure* Called with writer ipc_ids
sysvipc_find_ipc	This routine locks the ipc structure found at least at position pos.
msgctl_down	This function handles some msgctl commands which require the rwsem* to be held in write mode.* NOTE: no locks must be held, the rwsem is taken inside this function.
msgctl_stat
do_msgsnd
do_msgrcv
sem_lock	If the request contains only one semaphore operation, and there are* no complex transactions pending, lock only the semaphore involved
semctl_stat
shm_lock	shm_lock_(check_) routines are called in the paths where the rwsem* is not necessarily held.
shm_lock_by_ptr
shmctl_down	This function handles some shmctl commands which require the rwsem* to be held in write mode.* NOTE: no locks must be held, the rwsem is taken inside this function.
shmctl_stat
shmctl_do_lock
do_shmat	Fix shmaddr, allocate descriptor, map shm, add attach descriptor to lists.* NOTE! Despite the name, this is NOT a direct system call entrypoint. The* "raddr" thing points to kernel space, and there has to be a wrapper around* this.
free_ipcs	_ipcs - free all ipcs of one type@ns: the namespace to remove the ipcs from@ids: the table of ipcs to free@free: the function called to free each individual ipc Called for each kind of ipc when an ipc_namespace exits.

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