1 /* $NetBSD: sysv_shm_14.c,v 1.15 2008/04/28 20:23:41 martin Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_14.c,v 1.15 2008/04/28 20:23:41 martin Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/signal.h>
39 #include <sys/proc.h>
40 #include <sys/mount.h>
41 #include <sys/shm.h>
42
43 #ifndef SYSVSHM
44 #define SYSVSHM
45 #endif
46
47 #include <sys/syscallargs.h>
48
49 #include <compat/sys/shm.h>
50
51 static void shmid_ds14_to_native(struct shmid_ds14 *, struct shmid_ds *);
52 static void native_to_shmid_ds14(struct shmid_ds *, struct shmid_ds14 *);
53
54 static void
55 shmid_ds14_to_native(struct shmid_ds14 *oshmbuf, struct shmid_ds *shmbuf)
56 {
57
58 ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm);
59
60 #define CVT(x) shmbuf->x = oshmbuf->x
61 CVT(shm_segsz);
62 CVT(shm_lpid);
63 CVT(shm_cpid);
64 CVT(shm_nattch);
65 CVT(shm_atime);
66 CVT(shm_dtime);
67 CVT(shm_ctime);
68 #undef CVT
69 }
70
71 static void
72 native_to_shmid_ds14(struct shmid_ds *shmbuf, struct shmid_ds14 *oshmbuf)
73 {
74
75 native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm);
76
77 #define CVT(x) oshmbuf->x = shmbuf->x
78 CVT(shm_segsz);
79 CVT(shm_lpid);
80 CVT(shm_cpid);
81 CVT(shm_nattch);
82 CVT(shm_atime);
83 CVT(shm_dtime);
84 CVT(shm_ctime);
85 #undef CVT
86 }
87
88 int
89 compat_14_sys_shmctl(struct lwp *l, const struct compat_14_sys_shmctl_args *uap, register_t *retval)
90 {
91 /* {
92 syscallarg(int) shmid;
93 syscallarg(int) cmd;
94 syscallarg(struct shmid_ds14 *) buf;
95 } */
96 struct shmid_ds shmbuf;
97 struct shmid_ds14 oshmbuf;
98 int cmd, error;
99
100 cmd = SCARG(uap, cmd);
101
102 if (cmd == IPC_SET) {
103 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
104 if (error)
105 return (error);
106 shmid_ds14_to_native(&oshmbuf, &shmbuf);
107 }
108
109 error = shmctl1(l, SCARG(uap, shmid), cmd,
110 (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
111
112 if (error == 0 && cmd == IPC_STAT) {
113 native_to_shmid_ds14(&shmbuf, &oshmbuf);
114 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
115 }
116
117 return (error);
118 }
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