1/* $NetBSD: linux_oldmmap.c,v 1.72 2009/08/18 02:04:14 christos Exp $ */
2
3/*-
4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Frank van der Linden and Eric Haszlakiewicz.
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: linux_oldmmap.c,v 1.72 2009/08/18 02:04:14 christos Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/mount.h>
38
39#include <sys/sched.h>
40#include <sys/syscallargs.h>
41
42#include <uvm/uvm_param.h>
43
44#ifdef __amd64__
45#include <compat/netbsd32/netbsd32.h>
46
47#include <compat/linux32/common/linux32_types.h>
48#include <compat/linux32/common/linux32_machdep.h>
49#endif
50
51#include <compat/linux/common/linux_types.h>
52#include <compat/linux/common/linux_mmap.h>
53#include <compat/linux/common/linux_oldmmap.h>
54#include <compat/linux/common/linux_signal.h>
55#include <compat/linux/common/linux_ipc.h>
56#include <compat/linux/common/linux_sem.h>
57
58#include <compat/linux/linux_syscallargs.h>
59
60/* Used on: arm, i386, m68k */
61/* Used for linux32 on: amd64 */
62/* Not used on: alpha, mips, pcc, sparc, sparc64 */
63
64#undef DPRINTF
65#ifdef DEBUG_LINUX
66#define DPRINTF(a) uprintf a
67#else
68#define DPRINTF(a)
69#endif
70
71/*
72 * Linux wants to pass everything to a syscall in registers.
73 * However mmap() has 6 of them. Oops: out of register error.
74 * They just pass everything in a structure.
75 */
76int
77linux_sys_old_mmap(struct lwp *l, const struct linux_sys_old_mmap_args *uap, register_t *retval)
78{
79 /* {
80 syscallarg(struct linux_oldmmap *) lmp;
81 } */
82 struct linux_oldmmap lmap;
83 struct linux_sys_mmap_args nlmap;
84 int error;
85
86 if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap)))
87 return error;
88
89 if (lmap.lm_offset & PAGE_MASK) {
90 DPRINTF(("old_mmap: 0x%x\n", lmap.lm_offset));
91 return EINVAL;
92 }
93
94 SCARG(&nlmap,addr) = lmap.lm_addr;
95 SCARG(&nlmap,len) = lmap.lm_len;
96 SCARG(&nlmap,prot) = lmap.lm_prot;
97 SCARG(&nlmap,flags) = lmap.lm_flags;
98 SCARG(&nlmap,fd) = lmap.lm_fd;
99 SCARG(&nlmap,offset) = lmap.lm_offset;
100 error = linux_sys_mmap(l, &nlmap, retval);
101 DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u) = %d\n",
102 lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags,
103 lmap.lm_fd, lmap.lm_offset, error));
104 return error;
105}
106
107