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



NAME
       ipc - System V IPC system calls

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

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

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

NOTES
       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.

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)

COLOPHON
       This page is part of release 4.10 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
       https://www.kernel.org/doc/man-pages/.



Linux				  2012-10-16				IPC(2)