/*
* Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <sys/cdefs.h>
#if __DARWIN_UNIX03
#include <sys/mman.h>
#include <mach/vm_param.h>
#include <errno.h>
#include <mach/mach_init.h>
#include "stack_logging_internal.h"
void *__mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
/*
* mmap stub, with preemptory failures due to extra parameter checking
* mandated for conformance.
*
* This is for UNIX03 only.
*/
void *
mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)
{
/*
* Preemptory failures:
*
* o off is not a multiple of the page size
* [ This is enforced by the kernel with MAP_UNIX03 ]
* o flags does not contain either MAP_PRIVATE or MAP_SHARED
* o len is zero
*
* Now enforced by the kernel when the MAP_UNIX03 flag is provided.
*/
extern void cerror_nocancel(int);
if ((((flags & MAP_PRIVATE) != MAP_PRIVATE) &&
((flags & MAP_SHARED) != MAP_SHARED)) ||
(len == 0)) {
cerror_nocancel(EINVAL);
return MAP_FAILED;
}
void *ptr = __mmap(addr, len, prot, flags | MAP_UNIX03, fildes, off);
if (__syscall_logger) {
int stackLoggingFlags = stack_logging_type_vm_allocate;
if (flags & MAP_ANON) {
stackLoggingFlags |= (fildes & VM_FLAGS_ALIAS_MASK);
} else {
stackLoggingFlags |= stack_logging_type_mapped_file_or_shared_mem;
}
__syscall_logger(stackLoggingFlags, (uintptr_t)mach_task_self(), (uintptr_t)len, 0, (uintptr_t)ptr, 0);
}
return ptr;
}
#endif /* __DARWIN_UNIX03 */