IPC(2) Linux Programmer's Manual IPC(2)
ipc - System V IPC system calls
int ipc(unsigned int call, int first, int second, int third,
void *ptr, long fifth);
ipc() 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.
User programs should call the appropriate functions by their usual names. Only standard
library implementors and kernel hackers need to know about ipc().
ipc() is Linux-specific, and should not be used in programs intended to be portable.
On some architectures--for example x86-64 and ARM--there is no ipc() system call; instead
msgctl(2), semctl(2), shmctl(2), and so on really are implemented as separate system
msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), semtimedop(2),
shmat(2), shmctl(2), shmdt(2), shmget(2)
This page is part of release 3.55 of the Linux man-pages project. A description of the
project, and information about reporting bugs, can be found at
Linux 2012-10-16 IPC(2)