1 /* $NetBSD: linux_oldmmap.c,v 1.63 2004/08/24 17:41:54 jdolecek 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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: linux_oldmmap.c,v 1.63 2004/08/24 17:41:54 jdolecek Exp $");
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/mount.h>
45
46 #include <sys/sa.h>
47 #include <sys/syscallargs.h>
48
49 #include <uvm/uvm_param.h>
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
56 #include <compat/linux/linux_syscallargs.h>
57
58 /* Used on: arm, i386, m68k */
59 /* Not used on: alpha, mips, pcc, sparc, sparc64 */
60
61 #undef DPRINTF
62 #ifdef DEBUG_LINUX
63 #define DPRINTF(a) uprintf a
64 #else
65 #define DPRINTF(a)
66 #endif
67
68 /*
69 * Linux wants to pass everything to a syscall in registers.
70 * However mmap() has 6 of them. Oops: out of register error.
71 * They just pass everything in a structure.
72 */
73 int
74 linux_sys_old_mmap(l, v, retval)
75 struct lwp *l;
76 void *v;
77 register_t *retval;
78 {
79 struct linux_sys_old_mmap_args /* {
80 syscallarg(struct linux_oldmmap *) lmp;
81 } */ *uap = v;
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 return EINVAL;
91
92 SCARG(&nlmap,addr) = lmap.lm_addr;
93 SCARG(&nlmap,len) = lmap.lm_len;
94 SCARG(&nlmap,prot) = lmap.lm_prot;
95 SCARG(&nlmap,flags) = lmap.lm_flags;
96 SCARG(&nlmap,fd) = lmap.lm_fd;
97 SCARG(&nlmap,offset) = lmap.lm_offset;
98 DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u)\n",
99 lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags,
100 lmap.lm_fd, lmap.lm_offset));
101 return linux_sys_mmap(l, &nlmap, retval);
102 }
103
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