1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_MMAN_H_ 30 #define _SYS_MMAN_H_ 31 32 #include <sys/cdefs.h> 33 #include <sys/types.h> 34 #include <asm/mman.h> 35 36 __BEGIN_DECLS 37 38 #ifndef MAP_ANON 39 #define MAP_ANON MAP_ANONYMOUS 40 #endif 41 42 #define MAP_FAILED __BIONIC_CAST(reinterpret_cast, void*, -1) 43 44 #define MREMAP_MAYMOVE 1 45 #define MREMAP_FIXED 2 46 47 /* 48 * See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md 49 * 50 * mmap64 wasn't really around until L, but we added an inline for it since it 51 * allows a lot more code to compile with _FILE_OFFSET_BITS=64. 52 * 53 * GCC removes the static inline unless it is explicitly used. We can get around 54 * this with __attribute__((used)), but that needlessly adds a definition of 55 * mmap64 to every translation unit that includes this header. Instead, just 56 * preserve the old behavior for GCC and emit a useful diagnostic. 57 */ 58 #if defined(__USE_FILE_OFFSET64) 59 void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset) __RENAME(mmap64); 60 #else 61 void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset); 62 #endif 63 64 #if __ANDROID_API__ >= __ANDROID_API_L__ 65 void* mmap64(void* __addr, size_t __size, int __prot, int __flags, int __fd, off64_t __offset) __INTRODUCED_IN(21); 66 #endif 67 68 int munmap(void* __addr, size_t __size); 69 int msync(void* __addr, size_t __size, int __flags); 70 int mprotect(void* __addr, size_t __size, int __prot); 71 void* mremap(void* __old_addr, size_t __old_size, size_t __new_size, int __flags, ...); 72 73 int mlockall(int __flags) __INTRODUCED_IN(17); 74 int munlockall(void) __INTRODUCED_IN(17); 75 76 int mlock(const void* __addr, size_t __size); 77 int munlock(const void* __addr, size_t __size); 78 79 int mincore(void* __addr, size_t __size, unsigned char* __vector); 80 81 int madvise(void* __addr, size_t __size, int __advice); 82 83 #if __ANDROID_API__ >= __ANDROID_API_M__ 84 /* 85 * Some third-party code uses the existence of POSIX_MADV_NORMAL to detect the 86 * availability of posix_madvise. This is not correct, since having up-to-date 87 * UAPI headers says nothing about the C library, but for the time being we 88 * don't want to harm adoption of the unified headers. 89 * 90 * https://github.com/android-ndk/ndk/issues/395 91 */ 92 #define POSIX_MADV_NORMAL MADV_NORMAL 93 #define POSIX_MADV_RANDOM MADV_RANDOM 94 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL 95 #define POSIX_MADV_WILLNEED MADV_WILLNEED 96 #define POSIX_MADV_DONTNEED MADV_DONTNEED 97 #endif 98 int posix_madvise(void* __addr, size_t __size, int __advice) __INTRODUCED_IN(23); 99 100 __END_DECLS 101 102 #include <android/legacy_sys_mman_inlines.h> 103 104 #endif 105