go to
> msgctl(2)
> msgget(2)
> msgrcv(2)
> msgsnd(2)
> semctl(2)
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man page of ipc

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);
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 a few architectures, for example ia64, there is no ipc() system call; instead msgctl(2), semctl(2), shmctl(2), and so on really are implemented as separate system calls.


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 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at //www.kernel.org/doc/man-pages/. IPC(2)

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