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 | */ |
76 | int |
77 | linux_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 | |