ipc(2)                        System Calls Manual                       ipc(2)

NAME
       ipc - System V IPC system calls

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <linux/ipc.h>        /* Definition of needed constants */
       #include <sys/syscall.h>      /* Definition of SYS_* constants */
       #include <unistd.h>

       int syscall(SYS_ipc, unsigned int call, int first,
                   unsigned long second, unsigned long third, void *ptr,
                   long fifth);

       Note: glibc provides no wrapper for ipc(), necessitating the use of
       syscall(2).

DESCRIPTION
       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-space programs should call the appropriate functions by their
       usual names.  Only standard library implementors and kernel hackers
       need to know about ipc().

VERSIONS
       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 calls.

STANDARDS
       Linux.

SEE ALSO
       msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2),
       semop(2), semtimedop(2), shmat(2), shmctl(2), shmdt(2), shmget(2),
       sysvipc(7)

Linux man-pages 6.7               2023-10-31                            ipc(2)