projects / thirdparty / glibc.git / blame
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|---|---|---|
| 0482576e UD |
1 | /* Copyright (C) 1995, 1996, 1997, 2000 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 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. | |
| 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 | Library General Public License for more details. | |
| 13 | ||
| 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. */ | |
| 18 | ||
| 19 | #ifndef _SYS_SHM_H | |
| 20 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." | |
| 21 | #endif | |
| 22 | ||
| 0ed99ce4 | 23 | #include <bits/types.h> |
| 0482576e UD |
24 | |
| 25 | /* Permission flag for shmget. */ | |
| 26 | #define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ | |
| 27 | #define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ | |
| 28 | ||
| 29 | /* Flags for `shmat'. */ | |
| 30 | #define SHM_RDONLY 010000 /* attach read-only else read-write */ | |
| 31 | #define SHM_RND 020000 /* round attach address to SHMLBA */ | |
| 32 | #define SHM_REMAP 040000 /* take-over region on attach */ | |
| 33 | ||
| 34 | /* Commands for `shmctl'. */ | |
| 35 | #define SHM_LOCK 11 /* lock segment (root only) */ | |
| 36 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ | |
| 37 | ||
| 38 | ||
| 0ed99ce4 UD |
39 | /* Type to count number of attaches. */ |
| 40 | typedef unsigned long int shmatt_t; | |
| 41 | ||
| 0482576e UD |
42 | /* Data structure describing a set of semaphores. */ |
| 43 | struct shmid_ds | |
| 44 | { | |
| 45 | struct ipc_perm shm_perm; /* operation permission struct */ | |
| 46 | size_t shm_segsz; /* size of segment in bytes */ | |
| 47 | __time_t shm_atime; /* time of last shmat() */ | |
| 48 | unsigned long int __unused1; | |
| 49 | __time_t shm_dtime; /* time of last shmdt() */ | |
| 50 | unsigned long int __unused2; | |
| 51 | __time_t shm_ctime; /* time of last change by shmctl() */ | |
| 52 | unsigned long int __unused3; | |
| 0ed99ce4 UD |
53 | __pid_t shm_cpid; /* pid of creator */ |
| 54 | __pid_t shm_lpid; /* pid of last shmop */ | |
| 55 | shmatt_t shm_nattch; /* number of current attaches */ | |
| 0482576e UD |
56 | unsigned long int __unused4; |
| 57 | unsigned long int __unused5; | |
| 58 | }; | |
| 59 | ||
| 0482576e UD |
60 | #ifdef __USE_MISC |
| 61 | ||
| 62 | /* ipcs ctl commands */ | |
| 63 | # define SHM_STAT 13 | |
| 64 | # define SHM_INFO 14 | |
| 65 | ||
| 66 | /* shm_mode upper byte flags */ | |
| 67 | # define SHM_DEST 01000 /* segment will be destroyed on last detach */ | |
| 68 | # define SHM_LOCKED 02000 /* segment will not be swapped */ | |
| 69 | ||
| 70 | struct shminfo | |
| 71 | { | |
| 72 | unsigned long int shmmax; | |
| 73 | unsigned long int shmmin; | |
| 74 | unsigned long int shmmni; | |
| 75 | unsigned long int shmseg; | |
| 76 | unsigned long int shmall; | |
| 77 | unsigned long int __unused1; | |
| 78 | unsigned long int __unused2; | |
| 79 | unsigned long int __unused3; | |
| 80 | unsigned long int __unused4; | |
| 81 | }; | |
| 82 | ||
| 0482576e UD |
83 | struct shm_info |
| 84 | { | |
| 85 | int used_ids; | |
| 86 | unsigned long int shm_tot; /* total allocated shm */ | |
| 87 | unsigned long int shm_rss; /* total resident shm */ | |
| 88 | unsigned long int shm_swp; /* total swapped shm */ | |
| 89 | unsigned long int swap_attempts; | |
| 90 | unsigned long int swap_successes; | |
| 91 | }; | |
| 92 | ||
| 93 | #endif /* __USE_MISC */ |