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0ed99ce4 | 1 | /* Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. |
6d52618b | 2 | This file is part of the GNU C Library. |
60478656 | 3 | |
6d52618b UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
60478656 | 8 | |
6d52618b UD |
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 | Library General Public License for more details. | |
60478656 | 13 | |
6d52618b UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
60478656 | 18 | |
5107cf1d | 19 | #ifndef _SYS_SHM_H |
f4017d20 | 20 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." |
5107cf1d UD |
21 | #endif |
22 | ||
0ed99ce4 | 23 | #include <bits/types.h> |
60478656 RM |
24 | |
25 | /* Flags for `shmat'. */ | |
26 | #define SHM_RDONLY 010000 /* attach read-only else read-write */ | |
27 | #define SHM_RND 020000 /* round attach address to SHMLBA */ | |
28 | #define SHM_REMAP 040000 /* take-over region on attach */ | |
29 | ||
30 | /* Commands for `shmctl'. */ | |
31 | #define SHM_LOCK 11 /* lock segment (root only) */ | |
32 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ | |
33 | ||
34 | ||
0ed99ce4 UD |
35 | /* Type to count number of attaches. */ |
36 | typedef unsigned short int shmatt_t; | |
37 | ||
60478656 RM |
38 | /* Data structure describing a set of semaphores. */ |
39 | struct shmid_ds | |
f4017d20 UD |
40 | { |
41 | struct ipc_perm sem_perm; /* operation permission struct */ | |
42 | int shm_segsz; /* size of segment in bytes */ | |
43 | __time_t sem_atime; /* time of last shmat() */ | |
44 | __time_t sem_dtime; /* time of last shmdt() */ | |
45 | __time_t sem_ctime; /* time of last change by shmctl() */ | |
46 | __pid_t shm_cpid; /* pid of creator */ | |
47 | __pid_t shm_lpid; /* pid of last shmop */ | |
0ed99ce4 | 48 | shmatt_t shm_nattch; /* number of current attaches */ |
f4017d20 | 49 | }; |