1 | /* $NetBSD: sysv_sem_14.c,v 1.16 2011/01/19 10:21:16 tsutsui 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_sem_14.c,v 1.16 2011/01/19 10:21:16 tsutsui 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/sem.h> |
41 | |
42 | #ifndef SYSVSEM |
43 | #define SYSVSEM |
44 | #endif |
45 | |
46 | #include <sys/syscallargs.h> |
47 | |
48 | #include <compat/sys/sem.h> |
49 | |
50 | |
51 | int |
52 | compat_14_sys___semctl(struct lwp *l, const struct compat_14_sys___semctl_args *uap, register_t *retval) |
53 | { |
54 | /* { |
55 | syscallarg(int) semid; |
56 | syscallarg(int) semnum; |
57 | syscallarg(int) cmd; |
58 | syscallarg(union __semun *) arg; |
59 | } */ |
60 | union __semun arg; |
61 | struct semid_ds sembuf; |
62 | struct semid_ds14 osembuf; |
63 | int cmd, error; |
64 | void *pass_arg; |
65 | |
66 | cmd = SCARG(uap, cmd); |
67 | |
68 | pass_arg = get_semctl_arg(cmd, &sembuf, &arg); |
69 | |
70 | if (pass_arg != NULL) { |
71 | error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); |
72 | if (error) |
73 | return (error); |
74 | if (cmd == IPC_SET) { |
75 | error = copyin(arg.buf, &osembuf, sizeof(osembuf)); |
76 | if (error) |
77 | return (error); |
78 | __semid_ds14_to_native(&osembuf, &sembuf); |
79 | } |
80 | } |
81 | |
82 | error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, |
83 | pass_arg, retval); |
84 | |
85 | if (error == 0 && cmd == IPC_STAT) { |
86 | __native_to_semid_ds14(&sembuf, &osembuf); |
87 | error = copyout(&osembuf, arg.buf, sizeof(osembuf)); |
88 | } |
89 | |
90 | return (error); |
91 | } |
92 | |