platform_bionic/libc/include/sys/mman.h
Elliott Hughes 0d1a8a5b0b Reland "Retire GCC FORTIFY."
This reverts commit 4dbe8fc22f.

The angler/bullhead builds are now dead, so this can go in.

Bug: https://issuetracker.google.com/74404306
Change-Id: I130cdcd6375b6125cb8a1e63a4a540b0dbe41ceb
2018-07-24 19:36:51 +00:00

104 lines
3.9 KiB
C

/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SYS_MMAN_H_
#define _SYS_MMAN_H_
#include <sys/cdefs.h>
#include <sys/types.h>
#include <asm/mman.h>
__BEGIN_DECLS
#ifndef MAP_ANON
#define MAP_ANON MAP_ANONYMOUS
#endif
#define MAP_FAILED __BIONIC_CAST(reinterpret_cast, void*, -1)
#define MREMAP_MAYMOVE 1
#define MREMAP_FIXED 2
/*
* See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md
*
* mmap64 wasn't really around until L, but we added an inline for it since it
* allows a lot more code to compile with _FILE_OFFSET_BITS=64.
*
* GCC removes the static inline unless it is explicitly used. We can get around
* this with __attribute__((used)), but that needlessly adds a definition of
* mmap64 to every translation unit that includes this header. Instead, just
* preserve the old behavior for GCC and emit a useful diagnostic.
*/
#if defined(__USE_FILE_OFFSET64)
void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset) __RENAME(mmap64);
#else
void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset);
#endif
#if __ANDROID_API__ >= __ANDROID_API_L__
void* mmap64(void* __addr, size_t __size, int __prot, int __flags, int __fd, off64_t __offset) __INTRODUCED_IN(21);
#endif
int munmap(void* __addr, size_t __size);
int msync(void* __addr, size_t __size, int __flags);
int mprotect(void* __addr, size_t __size, int __prot);
void* mremap(void* __old_addr, size_t __old_size, size_t __new_size, int __flags, ...);
int mlockall(int __flags) __INTRODUCED_IN(17);
int munlockall(void) __INTRODUCED_IN(17);
int mlock(const void* __addr, size_t __size);
int munlock(const void* __addr, size_t __size);
int mincore(void* __addr, size_t __size, unsigned char* __vector);
int madvise(void* __addr, size_t __size, int __advice);
#if __ANDROID_API__ >= __ANDROID_API_M__
/*
* Some third-party code uses the existence of POSIX_MADV_NORMAL to detect the
* availability of posix_madvise. This is not correct, since having up-to-date
* UAPI headers says nothing about the C library, but for the time being we
* don't want to harm adoption of the unified headers.
*
* https://github.com/android-ndk/ndk/issues/395
*/
#define POSIX_MADV_NORMAL MADV_NORMAL
#define POSIX_MADV_RANDOM MADV_RANDOM
#define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
#define POSIX_MADV_WILLNEED MADV_WILLNEED
#define POSIX_MADV_DONTNEED MADV_DONTNEED
#endif
int posix_madvise(void* __addr, size_t __size, int __advice) __INTRODUCED_IN(23);
__END_DECLS
#include <android/legacy_sys_mman_inlines.h>
#endif