projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 1995-2016 Free Software Foundation, Inc. |
| 6d52618b | 2 | This file is part of the GNU C Library. |
| 60478656 | 3 | |
| 6d52618b | 4 | The GNU C Library is free software; you can redistribute it and/or |
| 41bdb6e2 AJ |
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. | |
| 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 | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 60478656 | 13 | |
| 41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 60478656 | 17 | |
| 5107cf1d | 18 | #ifndef _SYS_SHM_H |
| f4017d20 | 19 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." |
| 5107cf1d UD |
20 | #endif |
| 21 | ||
| 0ed99ce4 | 22 | #include <bits/types.h> |
| 60478656 RM |
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 | ||
| 2566e5f3 UD |
33 | __BEGIN_DECLS |
| 34 | ||
| ed5294d5 UD |
35 | /* Segment low boundary address multiple. */ |
| 36 | #define SHMLBA (__getpagesize ()) | |
| 37 | extern int __getpagesize (void) __THROW __attribute__ ((__const__)); | |
| 38 | ||
| 60478656 | 39 | |
| 0ed99ce4 UD |
40 | /* Type to count number of attaches. */ |
| 41 | typedef unsigned short int shmatt_t; | |
| 42 | ||
| a0f6c236 | 43 | /* Data structure describing a shared memory segment. */ |
| 60478656 | 44 | struct shmid_ds |
| f4017d20 | 45 | { |
| 924c3f59 | 46 | struct ipc_perm shm_perm; /* operation permission struct */ |
| f4017d20 | 47 | int shm_segsz; /* size of segment in bytes */ |
| 924c3f59 UD |
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() */ | |
| f4017d20 UD |
51 | __pid_t shm_cpid; /* pid of creator */ |
| 52 | __pid_t shm_lpid; /* pid of last shmop */ | |
| 0ed99ce4 | 53 | shmatt_t shm_nattch; /* number of current attaches */ |
| f4017d20 | 54 | }; |
| 2566e5f3 UD |
55 | |
| 56 | __END_DECLS |