1 /* $NetBSD: sysv_sem_14.c,v 1.17 2019/01/27 02:08:39 pgoyette 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 1.17 2019/01/27 02:08:39 pgoyette Exp $");
35
36 #if defined(_KERNEL_OPT)
37 #include "opt_compat_netbsd.h"
38 #endif
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/signal.h>
43 #include <sys/proc.h>
44 #include <sys/sem.h>
45
46 #ifndef SYSVSEM
47 #define SYSVSEM
48 #endif
49
50 #include <sys/syscallargs.h>
51
52 #include <compat/sys/sem.h>
53
54
55 int
compat_14_sys___semctl(struct lwp * l,const struct compat_14_sys___semctl_args * uap,register_t * retval)56 compat_14_sys___semctl(struct lwp *l, const struct compat_14_sys___semctl_args *uap, register_t *retval)
57 {
58 /* {
59 syscallarg(int) semid;
60 syscallarg(int) semnum;
61 syscallarg(int) cmd;
62 syscallarg(union __semun *) arg;
63 } */
64 union __semun arg;
65 struct semid_ds sembuf;
66 struct semid_ds14 osembuf;
67 int cmd, error;
68 void *pass_arg;
69
70 cmd = SCARG(uap, cmd);
71
72 pass_arg = get_semctl_arg(cmd, &sembuf, &arg);
73
74 if (pass_arg != NULL) {
75 error = copyin(SCARG(uap, arg), &arg, sizeof(arg));
76 if (error)
77 return (error);
78 if (cmd == IPC_SET) {
79 error = copyin(arg.buf, &osembuf, sizeof(osembuf));
80 if (error)
81 return (error);
82 __semid_ds14_to_native(&osembuf, &sembuf);
83 }
84 }
85
86 error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd,
87 pass_arg, retval);
88
89 if (error == 0 && cmd == IPC_STAT) {
90 __native_to_semid_ds14(&sembuf, &osembuf);
91 error = copyout(&osembuf, arg.buf, sizeof(osembuf));
92 }
93
94 return (error);
95 }
96