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dff8da6b | 1 | /* Copyright (C) 1995-2024 Free Software Foundation, Inc. |
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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 | |
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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. | |
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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. |
0482576e | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
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17 | |
18 | #ifndef _SYS_SHM_H | |
19 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." | |
20 | #endif | |
21 | ||
0ed99ce4 | 22 | #include <bits/types.h> |
2a4b25fa | 23 | #include <bits/wordsize.h> |
8c8d2a8a | 24 | #include <bits/shmlba.h> |
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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 */ | |
4f5ac20b | 34 | #define SHM_EXEC 0100000 /* execution access */ |
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35 | |
36 | /* Commands for `shmctl'. */ | |
37 | #define SHM_LOCK 11 /* lock segment (root only) */ | |
38 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ | |
39 | ||
7543b60c UD |
40 | __BEGIN_DECLS |
41 | ||
0ed99ce4 | 42 | /* Type to count number of attaches. */ |
729f3402 JM |
43 | typedef __syscall_ulong_t shmatt_t; |
44 | ||
380b7ced | 45 | #include <bits/types/struct_shmid_ds.h> |
47f24c21 | 46 | #include <bits/types/struct_shmid64_ds.h> |
0482576e | 47 | |
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48 | #ifdef __USE_MISC |
49 | ||
50 | /* ipcs ctl commands */ | |
51 | # define SHM_STAT 13 | |
52 | # define SHM_INFO 14 | |
f2857da7 | 53 | # define SHM_STAT_ANY 15 |
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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 */ | |
48f936a2 | 58 | # define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ |
2b7e8613 | 59 | # define SHM_NORESERVE 010000 /* don't check for reservations */ |
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60 | |
61 | struct shminfo | |
62 | { | |
729f3402 JM |
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; | |
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72 | }; |
73 | ||
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74 | struct shm_info |
75 | { | |
76 | int used_ids; | |
729f3402 JM |
77 | __syscall_ulong_t shm_tot; /* total allocated shm */ |
78 | __syscall_ulong_t shm_rss; /* total resident shm */ | |
79 | __syscall_ulong_t shm_swp; /* total swapped shm */ | |
80 | __syscall_ulong_t swap_attempts; | |
81 | __syscall_ulong_t swap_successes; | |
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82 | }; |
83 | ||
84 | #endif /* __USE_MISC */ | |
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85 | |
86 | __END_DECLS |