plucky (2) ipc.2.gz

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)