1 /* $NetBSD: sysv_msg_14.c,v 1.17 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_msg_14.c,v 1.17 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/msg.h>
42
43 #include <compat/sys/msg.h>
44
45 #ifndef SYSVMSG
46 #define SYSVMSG
47 #endif
48
49 #include <sys/syscallargs.h>
50
51 static void msqid_ds14_to_native(struct msqid_ds14 *, struct msqid_ds *);
52 static void native_to_msqid_ds14(struct msqid_ds *, struct msqid_ds14 *);
53
54 static void
55 msqid_ds14_to_native(struct msqid_ds14 *omsqbuf, struct msqid_ds *msqbuf)
56 {
57
58 ipc_perm14_to_native(&omsqbuf->msg_perm, &msqbuf->msg_perm);
59
60 #define CVT(x) msqbuf->x = omsqbuf->x
61 CVT(msg_qnum);
62 CVT(msg_qbytes);
63 CVT(msg_lspid);
64 CVT(msg_lrpid);
65 CVT(msg_stime);
66 CVT(msg_rtime);
67 CVT(msg_ctime);
68 #undef CVT
69 }
70
71 static void
72 native_to_msqid_ds14(struct msqid_ds *msqbuf, struct msqid_ds14 *omsqbuf)
73 {
74
75 native_to_ipc_perm14(&msqbuf->msg_perm, &omsqbuf->msg_perm);
76
77 #define CVT(x) omsqbuf->x = msqbuf->x
78 CVT(msg_qnum);
79 CVT(msg_qbytes);
80 CVT(msg_lspid);
81 CVT(msg_lrpid);
82 CVT(msg_stime);
83 CVT(msg_rtime);
84 CVT(msg_ctime);
85 #undef CVT
86
87 /*
88 * Not part of the API, but some programs might look at it.
89 */
90 omsqbuf->msg_cbytes = msqbuf->_msg_cbytes;
91 }
92
93 int
94 compat_14_sys_msgctl(struct lwp *l, const struct compat_14_sys_msgctl_args *uap, register_t *retval)
95 {
96 /* {
97 syscallarg(int) msqid;
98 syscallarg(int) cmd;
99 syscallarg(struct msqid_ds14 *) buf;
100 } */
101 struct msqid_ds msqbuf;
102 struct msqid_ds14 omsqbuf;
103 int cmd, error;
104
105 cmd = SCARG(uap, cmd);
106
107 if (cmd == IPC_SET) {
108 error = copyin(SCARG(uap, buf), &omsqbuf, sizeof(omsqbuf));
109 if (error)
110 return (error);
111 msqid_ds14_to_native(&omsqbuf, &msqbuf);
112 }
113
114 error = msgctl1(l, SCARG(uap, msqid), cmd,
115 (cmd == IPC_SET || cmd == IPC_STAT) ? &msqbuf : NULL);
116
117 if (error == 0 && cmd == IPC_STAT) {
118 native_to_msqid_ds14(&msqbuf, &omsqbuf);
119 error = copyout(&omsqbuf, SCARG(uap, buf), sizeof(omsqbuf));
120 }
121
122 return (error);
123 }
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