1 /* $NetBSD: darwin_unistd.c,v 1.11 2008/04/28 20:23:41 martin Exp $ */
2
3 /*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Emmanuel Dreyfus.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: darwin_unistd.c,v 1.11 2008/04/28 20:23:41 martin Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/proc.h>
38 #include <sys/mount.h>
39 #include <sys/endian.h>
40 #include <sys/syscallargs.h>
41
42 #include <compat/sys/signal.h>
43
44 #include <compat/mach/mach_types.h>
45 #include <compat/mach/mach_vm.h>
46
47 #include <compat/darwin/darwin_audit.h>
48 #include <compat/darwin/darwin_syscallargs.h>
49
50 int
51 darwin_sys_lseek(struct lwp *l, const struct darwin_sys_lseek_args *uap, register_t *retval)
52 {
53 struct sys_lseek_args cup;
54 union {
55 off_t o;
56 u_long l[2];
57 } off;
58
59 SCARG(&cup, fd) = SCARG(uap, fd);
60 SCARG(&cup, whence) = SCARG(uap, whence);
61
62 /*
63 * NetBSD pads the syscallarg structure because of the
64 * off_t argument, Darwin does not. In order to get the off_t
65 * argument going through our syscall machinery, we declare
66 * it as two long arguments, and we reassemble them here.
67 */
68 off.l[_QUAD_LOWWORD] = (u_long)SCARG(uap, off2);
69 off.l[_QUAD_HIGHWORD] = (u_long)SCARG(uap, off1);
70
71 SCARG(&cup, offset) = off.o;
72
73 return sys_lseek(l, &cup, retval);
74 }
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