1ipc(2)                        System Calls Manual                       ipc(2)
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NAME

6       ipc - System V IPC system calls
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <linux/ipc.h>        /* Definition of needed constants */
13       #include <sys/syscall.h>      /* Definition of SYS_* constants */
14       #include <unistd.h>
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16       int syscall(SYS_ipc, unsigned int call, int first,
17                   unsigned long second, unsigned long third, void *ptr,
18                   long fifth);
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20       Note:  glibc  provides  no  wrapper for ipc(), necessitating the use of
21       syscall(2).
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DESCRIPTION

24       ipc() is a common kernel entry point for the  System V  IPC  calls  for
25       messages,  semaphores,  and  shared  memory.  call determines which IPC
26       function to invoke; the other arguments are passed through to  the  ap‐
27       propriate call.
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29       User-space  programs  should  call  the  appropriate functions by their
30       usual names.  Only standard library  implementors  and  kernel  hackers
31       need to know about ipc().
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VERSIONS

34       On some architectures—for example x86-64 and ARM—there is no ipc() sys‐
35       tem call; instead, msgctl(2), semctl(2), shmctl(2), and  so  on  really
36       are implemented as separate system calls.
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STANDARDS

39       Linux.
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SEE ALSO

42       msgctl(2),  msgget(2),  msgrcv(2), msgsnd(2), semctl(2), semget(2), se‐
43       mop(2),  semtimedop(2),  shmat(2),  shmctl(2),   shmdt(2),   shmget(2),
44       sysvipc(7)
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48Linux man-pages 6.05              2023-03-30                            ipc(2)
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