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ipc

SYSNOPSIS

int sys_ipc (uint call, int first, int second, int third, void *ptr);

PARAMETERS

call: [in] the ipc call to perform.

first, second, third: parameters. Depend on call.

ptr: [in] pointer to a buffer.

DESCRIPTION

This is an in kernel wrapper for other ipc calls. call can take the following values:

SEMOP

sys_semop(first, (struct sembuf *)ptr, second);

SEMGET

sys_semget (first, second, third);

SEMCTL

sys_semctl (first, second, third, ptr);

MSGSND

sys_msgsnd (first, (struct msgbuf *) ptr, second, third);

MSGRCV

This one is a little tricky...

struct ipc_kludge tmp; if (!ptr) return -EINVAL;

memcpy_fromfs (&tmp,(struct ipc_kludge *) ptr, sizeof (tmp));

return sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp, third);

MSGGET

sys_msgget ((key_t) first, second);

MSGCTL

sys_msgctl (first, second, (struct msqid_ds *) ptr);

SHMAT

sys_shmat (first, (char *) ptr, second, (ulong *) third);

SHMDT

sys_shmdt ((char *)ptr);

SHMGET

sys_shmget (first, second, third);

SHMCTL

sys_shmctl (first, second, (struct shmid_ds *) ptr);

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