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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 3.65 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



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