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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 4.09 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/.



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