1 | /* Copyright (C) 1995-2022 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 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. |
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 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifndef _SYS_SHM_H |
19 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." |
20 | #endif |
21 | |
22 | #include <bits/types.h> |
23 | #include <bits/wordsize.h> |
24 | #include <bits/shmlba.h> |
25 | |
26 | /* Permission flag for shmget. */ |
27 | #define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ |
28 | #define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ |
29 | |
30 | /* Flags for `shmat'. */ |
31 | #define SHM_RDONLY 010000 /* attach read-only else read-write */ |
32 | #define SHM_RND 020000 /* round attach address to SHMLBA */ |
33 | #define SHM_REMAP 040000 /* take-over region on attach */ |
34 | #define SHM_EXEC 0100000 /* execution access */ |
35 | |
36 | /* Commands for `shmctl'. */ |
37 | #define SHM_LOCK 11 /* lock segment (root only) */ |
38 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ |
39 | |
40 | __BEGIN_DECLS |
41 | |
42 | /* Type to count number of attaches. */ |
43 | typedef __syscall_ulong_t shmatt_t; |
44 | |
45 | #include <bits/types/struct_shmid_ds.h> |
46 | #include <bits/types/struct_shmid64_ds.h> |
47 | |
48 | #ifdef __USE_MISC |
49 | |
50 | /* ipcs ctl commands */ |
51 | # define SHM_STAT 13 |
52 | # define SHM_INFO 14 |
53 | # define SHM_STAT_ANY 15 |
54 | |
55 | /* shm_mode upper byte flags */ |
56 | # define SHM_DEST 01000 /* segment will be destroyed on last detach */ |
57 | # define SHM_LOCKED 02000 /* segment will not be swapped */ |
58 | # define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ |
59 | # define SHM_NORESERVE 010000 /* don't check for reservations */ |
60 | |
61 | struct shminfo |
62 | { |
63 | __syscall_ulong_t shmmax; |
64 | __syscall_ulong_t shmmin; |
65 | __syscall_ulong_t shmmni; |
66 | __syscall_ulong_t shmseg; |
67 | __syscall_ulong_t shmall; |
68 | __syscall_ulong_t __glibc_reserved1; |
69 | __syscall_ulong_t __glibc_reserved2; |
70 | __syscall_ulong_t __glibc_reserved3; |
71 | __syscall_ulong_t __glibc_reserved4; |
72 | }; |
73 | |
74 | struct shm_info |
75 | { |
76 | int used_ids; |
77 | __syscall_ulong_t shm_tot; /* total allocated shm */ |
78 | __syscall_ulong_t ; /* total resident shm */ |
79 | __syscall_ulong_t shm_swp; /* total swapped shm */ |
80 | __syscall_ulong_t swap_attempts; |
81 | __syscall_ulong_t swap_successes; |
82 | }; |
83 | |
84 | #endif /* __USE_MISC */ |
85 | |
86 | __END_DECLS |
87 | |