ipc (2) - Linux Man Pages
ipc: System V IPC system calls
ipc - 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.
NOTESOn 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 calls.
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