1 /* $NetBSD: shm.h,v 1.8 2019/02/21 03:37:19 mrg Exp $ */
2
3 /*
4 * Copyright (c) 1994 Adam Glass
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Adam Glass.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * As defined+described in "X/Open System Interfaces and Headers"
35 * Issue 4, p. XXX
36 */
37
38 #ifndef _COMPAT_SYS_SHM_H_
39 #define _COMPAT_SYS_SHM_H_
40
41 #include <compat/sys/ipc.h>
42
43 struct shmid_ds14 {
44 struct ipc_perm14 shm_perm; /* operation permission structure */
45 int shm_segsz; /* size of segment in bytes */
46 pid_t shm_lpid; /* process ID of last shm op */
47 pid_t shm_cpid; /* process ID of creator */
48 short shm_nattch; /* number of current attaches */
49 int32_t shm_atime; /* time of last shmat() */
50 int32_t shm_dtime; /* time of last shmdt() */
51 int32_t shm_ctime; /* time of last change by shmctl() */
52 void *shm_internal; /* sysv stupidity */
53 };
54
55 struct shmid_ds13 {
56 struct ipc_perm shm_perm; /* operation permission structure */
57 size_t shm_segsz; /* size of segment in bytes */
58 pid_t shm_lpid; /* process ID of last shm operation */
59 pid_t shm_cpid; /* process ID of creator */
60 shmatt_t shm_nattch; /* number of current attaches */
61 int32_t shm_atime; /* time of last shmat() */
62 int32_t shm_dtime; /* time of last shmdt() */
63 int32_t shm_ctime; /* time of last change by shmctl() */
64
65 /*
66 * These members are private and used only in the internal
67 * implementation of this interface.
68 */
69 void *_shm_internal;
70 };
71
72 /* Warning: 64-bit structure padding is needed here */
73 struct shmid_ds_sysctl50 {
74 struct ipc_perm_sysctl shm_perm;
75 uint64_t shm_segsz;
76 pid_t shm_lpid;
77 pid_t shm_cpid;
78 int32_t shm_atime;
79 int32_t shm_dtime;
80 int32_t shm_ctime;
81 uint32_t shm_nattch;
82 };
83 struct shm_sysctl_info50 {
84 struct shminfo shminfo;
85 struct shmid_ds_sysctl50 shmids[1];
86 };
87
88 __BEGIN_DECLS
89 static __inline void __shmid_ds14_to_native(const struct shmid_ds14 *, struct shmid_ds *);
90 static __inline void __native_to_shmid_ds14(const struct shmid_ds *, struct shmid_ds14 *);
91 static __inline void __shmid_ds13_to_native(const struct shmid_ds13 *, struct shmid_ds *);
92 static __inline void __native_to_shmid_ds13(const struct shmid_ds *, struct shmid_ds13 *);
93 static __inline void
__shmid_ds14_to_native(const struct shmid_ds14 * oshmbuf,struct shmid_ds * shmbuf)94 __shmid_ds14_to_native(const struct shmid_ds14 *oshmbuf, struct shmid_ds *shmbuf)
95 {
96
97 __ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm);
98
99 #define CVT(x) shmbuf->x = oshmbuf->x
100 CVT(shm_segsz);
101 CVT(shm_lpid);
102 CVT(shm_cpid);
103 CVT(shm_nattch);
104 CVT(shm_atime);
105 CVT(shm_dtime);
106 CVT(shm_ctime);
107 #undef CVT
108 }
109
110 static __inline void
__native_to_shmid_ds14(const struct shmid_ds * shmbuf,struct shmid_ds14 * oshmbuf)111 __native_to_shmid_ds14(const struct shmid_ds *shmbuf, struct shmid_ds14 *oshmbuf)
112 {
113
114 memset(oshmbuf, 0, sizeof *oshmbuf);
115 __native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm);
116
117 #define CVT(x) oshmbuf->x = shmbuf->x
118 #define CVTI(x) oshmbuf->x = (int)shmbuf->x
119 CVTI(shm_segsz);
120 CVT(shm_lpid);
121 CVT(shm_cpid);
122 CVT(shm_nattch);
123 CVTI(shm_atime);
124 CVTI(shm_dtime);
125 CVTI(shm_ctime);
126 #undef CVT
127 #undef CVTI
128 }
129
130 static __inline void
__shmid_ds13_to_native(const struct shmid_ds13 * oshmbuf,struct shmid_ds * shmbuf)131 __shmid_ds13_to_native(const struct shmid_ds13 *oshmbuf, struct shmid_ds *shmbuf)
132 {
133
134 shmbuf->shm_perm = oshmbuf->shm_perm;
135
136 #define CVT(x) shmbuf->x = oshmbuf->x
137 CVT(shm_segsz);
138 CVT(shm_lpid);
139 CVT(shm_cpid);
140 CVT(shm_nattch);
141 CVT(shm_atime);
142 CVT(shm_dtime);
143 CVT(shm_ctime);
144 #undef CVT
145 }
146
147 static __inline void
__native_to_shmid_ds13(const struct shmid_ds * shmbuf,struct shmid_ds13 * oshmbuf)148 __native_to_shmid_ds13(const struct shmid_ds *shmbuf, struct shmid_ds13 *oshmbuf)
149 {
150
151 memset(oshmbuf, 0, sizeof *oshmbuf);
152 oshmbuf->shm_perm = shmbuf->shm_perm;
153
154 #define CVT(x) oshmbuf->x = shmbuf->x
155 #define CVTI(x) oshmbuf->x = (int)shmbuf->x
156 CVT(shm_segsz);
157 CVT(shm_lpid);
158 CVT(shm_cpid);
159 CVT(shm_nattch);
160 CVTI(shm_atime);
161 CVTI(shm_dtime);
162 CVTI(shm_ctime);
163 #undef CVT
164 #undef CVTI
165 }
166
167 int __shmctl13(int, int, struct shmid_ds13 *);
168 int __shmctl14(int, int, struct shmid_ds14 *);
169 int __shmctl50(int, int, struct shmid_ds *);
170 __END_DECLS
171
172 #endif /* !_COMPAT_SYS_SHM_H_ */
173