1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef __LIB_UTILS_COMPAT_H
18#define __LIB_UTILS_COMPAT_H
19
20#include <unistd.h>
21
22/* Compatibility definitions for non-Linux (i.e., BSD-based) hosts. */
23#ifndef HAVE_OFF64_T
24#if _FILE_OFFSET_BITS < 64
25#error "_FILE_OFFSET_BITS < 64; large files are not supported on this platform"
26#endif /* _FILE_OFFSET_BITS < 64 */
27
28typedef off_t off64_t;
29
30static inline off64_t lseek64(int fd, off64_t offset, int whence) {
31    return lseek(fd, offset, whence);
32}
33
34#ifdef HAVE_PREAD
35static inline ssize_t pread64(int fd, void* buf, size_t nbytes, off64_t offset) {
36    return pread(fd, buf, nbytes, offset);
37}
38#endif
39
40#endif /* !HAVE_OFF64_T */
41
42#endif /* __LIB_UTILS_COMPAT_H */
43