Control Requirements

 

Table 43: Control requirements for manipulating semaphores.

	CONTROL REQUIREMENT(S)
CALL(S)	CLASS	PERM	SSID	TSID
semget	sem	create	current	sem
semop (sem_op==0)	sem	read	current	sem
semop (sem_op!=0)	sem	write	current	sem
semctl.SEM_STAT,	sem	getattr	current	sem
IPC_STAT,
IPC_GETNCNT,
IPC_GETPID
IPC_GETZCNT
semctl.IPC_SET	sem	setattr	current	sem
semctl.IPC_RMID	sem	destroy	current	sem
semctl.IPC_GETALL,	sem	read	current	sem
IPC_GETVAL
semctl.IPC_SETALL,	sem	write	current	sem
IPC_SETVAL

 

 

Table 44: Control requirements for manipulating message queues.

	CONTROL REQUIREMENT(S)
CALL(S)	CLASS	PERM	SSID	TSID
msgget	msgq	create	current	msgq
msgsnd	msgq	enqueue	current	msgq
	msg	send	current	msg
msgrcv	msgq	dequeue	current	msgq
	msg	recv	current	msg
msgctl.MSG_STAT,	msgq	getattr	current	msgq
IPC_STAT
msgctl.IPC_SET	msgq	setattr	current	msgq
msgctl.IPC_RMID	msgq	destroy	current	msgq

 

 

Table 45: Control requirements for manipulating shared memory.

	CONTROL REQUIREMENT(S)
CALL(S)	CLASS	PERM	SSID	TSID
shmget	shm	create	current	shm
shmat (SHM_RDONLY)	shm	attach	current	shm
shmat (!SHM_RDONLY)	shm	attach	current	shm
	shm	write	current	shm
shmctl.SHM_STAT,	shm	getattr	current	shm
IPC_STAT
shmctl.IPC_SET	shm	setattr	current	shm
shmctl.IPC_RMID	shm	destroy	current	shm
shmctl.SHM_LOCK,	shm	lock	current	shm
SHM_UNLOCK

 

The control requirements for the System V IPC system calls are shown in Table 43, Table 44, and Table 45.