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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/ipc.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/ipc.h

     1	/* Copyright (C) 1995-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	#ifndef _SYS_IPC_H
    19	# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
    20	#endif
    21	
    22	#include <bits/types.h>
    23	
    24	/* Mode bits for `msgget', `semget', and `shmget'.  */
    25	#define IPC_CREAT	01000		/* Create key if key does not exist. */
    26	#define IPC_EXCL	02000		/* Fail if key exists.  */
    27	#define IPC_NOWAIT	04000		/* Return error on wait.  */
    28	
    29	/* Control commands for `msgctl', `semctl', and `shmctl'.  */
    30	#define IPC_RMID	0		/* Remove identifier.  */
    31	#define IPC_SET		1		/* Set `ipc_perm' options.  */
    32	#define IPC_STAT	2		/* Get `ipc_perm' options.  */
    33	#ifdef __USE_GNU
    34	# define IPC_INFO	3		/* See ipcs.  */
    35	#endif
    36	
    37	/* Special key values.  */
    38	#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
    39	
    40	#include <bits/ipc-perm.h>