projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 6d2010ae A |
1 | /* |
| 2 | * Copyright (c) 2004 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 0a7de745 | 5 | * |
| 6d2010ae A |
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. | |
| 0a7de745 | 12 | * |
| 6d2010ae A |
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. | |
| 0a7de745 | 20 | * |
| 6d2010ae A |
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> | |
| 39236c6e A |
31 | #include <mach/mach_init.h> |
| 32 | #include "stack_logging_internal.h" | |
| 6d2010ae A |
33 | |
| 34 | void *__mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off); | |
| 35 | ||
| 36 | /* | |
| 37 | * mmap stub, with preemptory failures due to extra parameter checking | |
| 38 | * mandated for conformance. | |
| 39 | * | |
| 40 | * This is for UNIX03 only. | |
| 41 | */ | |
| 42 | void * | |
| 43 | mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off) | |
| 44 | { | |
| 45 | /* | |
| 46 | * Preemptory failures: | |
| 0a7de745 | 47 | * |
| 6d2010ae | 48 | * o off is not a multiple of the page size |
| f427ee49 | 49 | * [ This is enforced by the kernel with MAP_UNIX03 ] |
| 6d2010ae A |
50 | * o flags does not contain either MAP_PRIVATE or MAP_SHARED |
| 51 | * o len is zero | |
| f427ee49 A |
52 | * |
| 53 | * Now enforced by the kernel when the MAP_UNIX03 flag is provided. | |
| 6d2010ae | 54 | */ |
| 39236c6e | 55 | extern void cerror_nocancel(int); |
| f427ee49 | 56 | if ((((flags & MAP_PRIVATE) != MAP_PRIVATE) && |
| 0a7de745 | 57 | ((flags & MAP_SHARED) != MAP_SHARED)) || |
| 6d2010ae | 58 | (len == 0)) { |
| 39236c6e | 59 | cerror_nocancel(EINVAL); |
| 0a7de745 | 60 | return MAP_FAILED; |
| 6d2010ae A |
61 | } |
| 62 | ||
| f427ee49 | 63 | void *ptr = __mmap(addr, len, prot, flags | MAP_UNIX03, fildes, off); |
| 0a7de745 | 64 | |
| 39236c6e A |
65 | if (__syscall_logger) { |
| 66 | int stackLoggingFlags = stack_logging_type_vm_allocate; | |
| 67 | if (flags & MAP_ANON) { | |
| 68 | stackLoggingFlags |= (fildes & VM_FLAGS_ALIAS_MASK); | |
| 69 | } else { | |
| 70 | stackLoggingFlags |= stack_logging_type_mapped_file_or_shared_mem; | |
| 71 | } | |
| 72 | __syscall_logger(stackLoggingFlags, (uintptr_t)mach_task_self(), (uintptr_t)len, 0, (uintptr_t)ptr, 0); | |
| 73 | } | |
| 74 | ||
| 75 | return ptr; | |
| 6d2010ae A |
76 | } |
| 77 | ||
| 78 | #endif /* __DARWIN_UNIX03 */ |