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#include <mach/mach_init.h> 32#include "stack_logging_internal.h" 33 34void *__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 */ 42void * 43mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off) 44{ 45 /* 46 * Preemptory failures: 47 * 48 * o off is not a multiple of the page size 49 * o flags does not contain either MAP_PRIVATE or MAP_SHARED 50 * o len is zero 51 */ 52 extern void cerror_nocancel(int); 53 if ((off & PAGE_MASK) || 54 (((flags & MAP_PRIVATE) != MAP_PRIVATE) && 55 ((flags & MAP_SHARED) != MAP_SHARED)) || 56 (len == 0)) { 57 cerror_nocancel(EINVAL); 58 return(MAP_FAILED); 59 } 60 61 void *ptr = __mmap(addr, len, prot, flags, fildes, off); 62 63 if (__syscall_logger) { 64 int stackLoggingFlags = stack_logging_type_vm_allocate; 65 if (flags & MAP_ANON) { 66 stackLoggingFlags |= (fildes & VM_FLAGS_ALIAS_MASK); 67 } else { 68 stackLoggingFlags |= stack_logging_type_mapped_file_or_shared_mem; 69 } 70 __syscall_logger(stackLoggingFlags, (uintptr_t)mach_task_self(), (uintptr_t)len, 0, (uintptr_t)ptr, 0); 71 } 72 73 return ptr; 74} 75 76#endif /* __DARWIN_UNIX03 */ 77