IPCSection: Linux Programmer's Manual (2)
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NAMEipc - System V IPC system calls
int ipc(unsigned int call, int first, int second, int third, void *ptr, long fifth);
DESCRIPTIONipc() is a common kernel entry point for the System V IPC calls for messages, semaphores, and shared memory. call determines which IPC function to invoke; the other arguments are passed through to the appropriate call.
CONFORMING TOipc() is Linux specific, and should not be used in programs intended to be portable.
SEE ALSOmsgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), shmat(2), shmctl(2), shmdt(2), shmget(2)