projects / thirdparty / glibc.git / blame
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|---|---|---|
| 5107cf1d | 1 | /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
| 6d52618b UD |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
| 60478656 | 4 | |
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5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public License as | |
| 7 | published by the Free Software Foundation; either version 2 of the | |
| 8 | License, or (at your option) any later version. | |
| 60478656 | 9 | |
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10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Library General Public License for more details. | |
| 60478656 | 14 | |
| 6d52618b UD |
15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 18 | Boston, MA 02111-1307, USA. */ | |
| 60478656 | 19 | |
| 5107cf1d UD |
20 | #ifndef _SYS_SHM_H |
| 21 | #error "Never use <bits/shm.h> directly; include <sys/shm.h> instead." | |
| 22 | #endif | |
| 23 | ||
| 60478656 RM |
24 | |
| 25 | #include <features.h> | |
| 26 | #include <sys/types.h> | |
| 27 | ||
| 28 | /* Flags for `shmat'. */ | |
| 29 | #define SHM_RDONLY 010000 /* attach read-only else read-write */ | |
| 30 | #define SHM_RND 020000 /* round attach address to SHMLBA */ | |
| 31 | #define SHM_REMAP 040000 /* take-over region on attach */ | |
| 32 | ||
| 33 | /* Commands for `shmctl'. */ | |
| 34 | #define SHM_LOCK 11 /* lock segment (root only) */ | |
| 35 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ | |
| 36 | ||
| 37 | ||
| 38 | __BEGIN_DECLS | |
| 39 | ||
| 40 | /* Data structure describing a set of semaphores. */ | |
| 41 | struct shmid_ds | |
| 42 | { | |
| 6d52618b | 43 | struct ipc_perm sem_perm; /* operation permission struct */ |
| 60478656 RM |
44 | int shm_segsz; /* size of segment in bytes */ |
| 45 | __time_t sem_atime; /* time of last shmat() */ | |
| 46 | __time_t sem_dtime; /* time of last shmdt() */ | |
| 47 | __time_t sem_ctime; /* time of last change by shmctl() */ | |
| 48 | __pid_t shm_cpid; /* pid of creator */ | |
| 49 | __pid_t shm_lpid; /* pid of last shmop */ | |
| 50 | unsigned short int shm_nattch; /* number of current attaches */ | |
| 51 | }; | |
| 52 | ||
| 53 | __END_DECLS |