sysv_shm_14.c revision 1.11.28.1 1 /* $NetBSD: sysv_shm_14.c,v 1.11.28.1 2007/12/08 17:56:35 ad 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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_14.c,v 1.11.28.1 2007/12/08 17:56:35 ad Exp $");
42
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/signal.h>
46 #include <sys/proc.h>
47 #include <sys/mount.h>
48 #include <sys/shm.h>
49
50 #ifndef SYSVSHM
51 #define SYSVSHM
52 #endif
53
54 #include <sys/syscallargs.h>
55
56 #include <compat/sys/shm.h>
57
58 static void shmid_ds14_to_native(struct shmid_ds14 *, struct shmid_ds *);
59 static void native_to_shmid_ds14(struct shmid_ds *, struct shmid_ds14 *);
60
61 static void
62 shmid_ds14_to_native(oshmbuf, shmbuf)
63 struct shmid_ds14 *oshmbuf;
64 struct shmid_ds *shmbuf;
65 {
66
67 ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm);
68
69 #define CVT(x) shmbuf->x = oshmbuf->x
70 CVT(shm_segsz);
71 CVT(shm_lpid);
72 CVT(shm_cpid);
73 CVT(shm_nattch);
74 CVT(shm_atime);
75 CVT(shm_dtime);
76 CVT(shm_ctime);
77 #undef CVT
78 }
79
80 static void
81 native_to_shmid_ds14(shmbuf, oshmbuf)
82 struct shmid_ds *shmbuf;
83 struct shmid_ds14 *oshmbuf;
84 {
85
86 native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm);
87
88 #define CVT(x) oshmbuf->x = shmbuf->x
89 CVT(shm_segsz);
90 CVT(shm_lpid);
91 CVT(shm_cpid);
92 CVT(shm_nattch);
93 CVT(shm_atime);
94 CVT(shm_dtime);
95 CVT(shm_ctime);
96 #undef CVT
97 }
98
99 int
100 compat_14_sys_shmctl(struct lwp *l, void *v, register_t *retval)
101 {
102 struct compat_14_sys_shmctl_args /* {
103 syscallarg(int) shmid;
104 syscallarg(int) cmd;
105 syscallarg(struct shmid_ds14 *) buf;
106 } */ *uap = v;
107 struct shmid_ds shmbuf;
108 struct shmid_ds14 oshmbuf;
109 int cmd, error;
110
111 cmd = SCARG(uap, cmd);
112
113 if (cmd == IPC_SET) {
114 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf));
115 if (error)
116 return (error);
117 shmid_ds14_to_native(&oshmbuf, &shmbuf);
118 }
119
120 error = shmctl1(l, SCARG(uap, shmid), cmd,
121 (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL);
122
123 if (error == 0 && cmd == IPC_STAT) {
124 native_to_shmid_ds14(&shmbuf, &oshmbuf);
125 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf));
126 }
127
128 return (error);
129 }
130