ipc(2) — Linux manual page

ipc(2)                     System Calls Manual                    ipc(2)

NAME         top

       ipc - System V IPC system calls

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #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         top

       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         top

       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         top

       Linux.

SEE ALSO         top

       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)

COLOPHON         top

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Linux man-pages 6.9.1          2024-05-02                         ipc(2)

Pages that refer to this page: semctl(2),  syscalls(2),  unimplemented(2),  seccomp_syscall_resolve_name(3),  sysvipc(7)

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