函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:ipc\util.h Create Date:2022-07-27 18:14:10
Last Modify:2022-05-20 10:36:20 Copyright©Brick
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函数名称:ipc_unlock_object

函数原型:static inline void ipc_unlock_object(struct kern_ipc_perm *perm)

返回类型:void

参数:

类型参数名称
struct kern_ipc_perm *perm
214  自旋锁解锁
调用者
名称描述
newquewque - Create a new msg queue*@ns: namespace*@params: ptr to the structure that contains the key and msgflg* Called with msg_ids.rwsem held (writer)
freequeque() wakes up waiters on the sender and receiver waiting queue,* removes the message queue from message queue ID IDR, and cleans up all the* messages associated with this queue.* msg_ids.rwsem (writer) and the spinlock for this message queue are held
msgctl_downThis 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_lockIf the request contains only one semaphore operation, and there are* no complex transactions pending, lock only the semaphore involved
sem_unlock
semctl_stat
shm_lockshm_lock_(check_) routines are called in the paths where the rwsem* is not necessarily held.
newsegwseg - Create a new shared memory segment*@ns: namespace*@params: ptr to the structure that contains key, size and shmflg* Called with shm_ids.rwsem held as a writer.
shmctl_downThis 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_shmatFix 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.
ipc_unlock