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1/* Copyright (C) 1995-2019 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 <http://www.gnu.org/licenses/>. */
17
18#ifndef _SYS_SHM_H
19# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
20#endif
21
22#include <bits/types.h>
23
24/* Flags for `shmat'. */
25#define SHM_RDONLY 010000 /* attach read-only else read-write */
26#define SHM_RND 020000 /* round attach address to SHMLBA */
27#define SHM_REMAP 040000 /* take-over region on attach */
28
29/* Commands for `shmctl'. */
30#define SHM_LOCK 11 /* lock segment (root only) */
31#define SHM_UNLOCK 12 /* unlock segment (root only) */
32
33__BEGIN_DECLS
34
35/* Segment low boundary address multiple. */
36#define SHMLBA (__getpagesize ())
37extern int __getpagesize (void) __THROW __attribute__ ((__const__));
38
39
40/* Type to count number of attaches. */
41typedef unsigned short int shmatt_t;
42
43/* Data structure describing a shared memory segment. */
44struct shmid_ds
45 {
46 struct ipc_perm shm_perm; /* operation permission struct */
47 size_t shm_segsz; /* size of segment in bytes */
48 __time_t shm_atime; /* time of last shmat() */
49 __time_t shm_dtime; /* time of last shmdt() */
50 __time_t shm_ctime; /* time of last change by shmctl() */
51 __pid_t shm_cpid; /* pid of creator */
52 __pid_t shm_lpid; /* pid of last shmop */
53 shmatt_t shm_nattch; /* number of current attaches */
54 };
55
56__END_DECLS
57

Warning: That file was not part of the compilation database. It may have many parsing errors.