ipc(2) — Linux manual page


IPC(2)                  Linux Programmer's Manual                 IPC(2)

NAME         top

       ipc - System V IPC system calls

SYNOPSIS         top

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

       Note: There is no glibc wrapper for this system call; see NOTES.

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().

CONFORMING TO         top

       ipc() is Linux-specific, and should not be used in programs
       intended to be portable.

NOTES         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.

       Glibc does not provide a wrapper for this system call; in the
       unlikely event that you want to call it directly, you can do so
       using syscall(2).

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

       This page is part of release 5.11 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at

Linux                          2021-03-22                         IPC(2)

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