IPC(2)                    (2019-08-02)                     IPC(2)

     NAME
          ipc - System V IPC system calls

     SYNOPSIS
          int ipc(unsigned int call, int first, int second
                  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-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
          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), sysvipc(7)

     COLOPHON
          This page is part of release 5.10 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/.

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