1/*
2 * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24#include <sys/cdefs.h>
25
26#if __DARWIN_UNIX03
27
28#include <sys/mman.h>
29#include <mach/vm_param.h>
30#include <errno.h>
31
32void *__mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
33
34/*
35 * mmap stub, with preemptory failures due to extra parameter checking
36 * mandated for conformance.
37 *
38 * This is for UNIX03 only.
39 */
40void *
41mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
42{
43	/*
44	 * Preemptory failures:
45	 *
46	 * o	off is not a multiple of the page size
47	 * o	flags does not contain either MAP_PRIVATE or MAP_SHARED
48	 * o	len is zero
49	 */
50	extern void cthread_set_errno_self(int);
51	if ((off & PAGE_MASK) ||
52	    (((flags & MAP_PRIVATE) != MAP_PRIVATE) &&
53	     ((flags & MAP_SHARED) != MAP_SHARED)) ||
54	    (len == 0)) {
55		cthread_set_errno_self(EINVAL);
56		return(MAP_FAILED);
57	}
58
59	return(__mmap(addr, len, prot, flags, fildes, off));
60}
61
62#endif /* __DARWIN_UNIX03 */
63