netbsd32_execve.c revision 1.32 
1/*	$NetBSD: netbsd32_execve.c,v 1.32 2008/05/29 14:51:26 mrg Exp $	*/
2
3/*
4 * Copyright (c) 1998, 2001 Matthew R. Green
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30
31__KERNEL_RCSID(0, "$NetBSD: netbsd32_execve.c,v 1.32 2008/05/29 14:51:26 mrg Exp $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/mount.h>
36#include <sys/stat.h>
37#include <sys/vnode.h>
38#include <sys/file.h>
39#include <sys/filedesc.h>
40#include <sys/syscallargs.h>
41#include <sys/proc.h>
42#include <sys/exec.h>
43
44#include <compat/netbsd32/netbsd32.h>
45#include <compat/netbsd32/netbsd32_syscall.h>
46#include <compat/netbsd32/netbsd32_syscallargs.h>
47
48static int
49netbsd32_execve_fetch_element(char * const *array, size_t index, char **value)
50{
51	int error;
52	netbsd32_charp const *a32 = (void const *)array;
53	netbsd32_charp e;
54
55	error = copyin(a32 + index, &e, sizeof(e));
56	if (error)
57		return error;
58	*value = (char *)NETBSD32PTR64(e);
59	return 0;
60}
61
62int
63netbsd32_execve(struct lwp *l, const struct netbsd32_execve_args *uap, register_t *retval)
64{
65	/* {
66		syscallarg(const netbsd32_charp) path;
67		syscallarg(netbsd32_charpp) argp;
68		syscallarg(netbsd32_charpp) envp;
69	} */
70	const char *path = SCARG_P32(uap, path);
71
72	return execve1(l, path, SCARG_P32(uap, argp),
73	    SCARG_P32(uap, envp), netbsd32_execve_fetch_element);
74}
75