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c2fabc3a | 1 | /* Copyright (C) 1995,1996,1997,2000,2001,2002,2003 Free Software Foundation, Inc. |
f21acc89 | 2 | This file is part of the GNU C Library. |
f21acc89 UD |
3 | |
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. | |
f21acc89 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
f21acc89 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
f21acc89 | 18 | |
f4017d20 UD |
19 | #ifndef _SYS_SHM_H |
20 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." | |
21 | #endif | |
f21acc89 | 22 | |
b7dd38e6 | 23 | #include <bits/types.h> |
f21acc89 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 | ||
ed5294d5 | 38 | /* Segment low boundary address multiple. */ |
c2fabc3a | 39 | #define SHMLBA 0x40000 |
ed5294d5 UD |
40 | |
41 | ||
b7dd38e6 AJ |
42 | /* Type to count number of attaches. */ |
43 | typedef unsigned long int shmatt_t; | |
f21acc89 | 44 | |
f21acc89 UD |
45 | /* Data structure describing a set of semaphores. */ |
46 | struct shmid_ds | |
f4017d20 UD |
47 | { |
48 | struct ipc_perm shm_perm; /* operation permission struct */ | |
b7dd38e6 | 49 | size_t shm_segsz; /* size of segment in bytes */ |
f4017d20 UD |
50 | __time_t shm_atime; /* time of last shmat() */ |
51 | __time_t shm_dtime; /* time of last shmdt() */ | |
52 | __time_t shm_ctime; /* time of last change by shmctl() */ | |
b7dd38e6 AJ |
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 */ | |
56 | unsigned long int __unused1; | |
57 | unsigned long int __unused2; | |
f4017d20 | 58 | }; |
f21acc89 UD |
59 | |
60 | #ifdef __USE_MISC | |
61 | ||
62 | /* ipcs ctl commands */ | |
b7dd38e6 AJ |
63 | # define SHM_STAT 13 |
64 | # define SHM_INFO 14 | |
f21acc89 UD |
65 | |
66 | /* shm_mode upper byte flags */ | |
f4017d20 UD |
67 | # define SHM_DEST 01000 /* segment will be destroyed on last detach */ |
68 | # define SHM_LOCKED 02000 /* segment will not be swapped */ | |
48f936a2 | 69 | # define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ |
f21acc89 | 70 | |
b7dd38e6 | 71 | struct shminfo |
f4017d20 | 72 | { |
b7dd38e6 AJ |
73 | unsigned long int shmmax; |
74 | unsigned long int shmmin; | |
75 | unsigned long int shmmni; | |
76 | unsigned long int shmseg; | |
77 | unsigned long int shmall; | |
78 | unsigned long int __unused1; | |
79 | unsigned long int __unused2; | |
80 | unsigned long int __unused3; | |
81 | unsigned long int __unused4; | |
f4017d20 | 82 | }; |
f21acc89 UD |
83 | |
84 | struct shm_info | |
f4017d20 | 85 | { |
b7dd38e6 AJ |
86 | int used_ids; |
87 | unsigned long int shm_tot; /* total allocated shm */ | |
88 | unsigned long int shm_rss; /* total resident shm */ | |
89 | unsigned long int shm_swp; /* total swapped shm */ | |
90 | unsigned long int swap_attempts; | |
91 | unsigned long int swap_successes; | |
f4017d20 | 92 | }; |
f21acc89 UD |
93 | |
94 | #endif /* __USE_MISC */ |