2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef __LIB_UTILS_COMPAT_H
18 #define __LIB_UTILS_COMPAT_H
22 /* Compatibility definitions for non-Linux (i.e., BSD-based) hosts. */
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 */
28 typedef off_t off64_t;
30 static inline off64_t lseek64(int fd, off64_t offset, int whence) {
31 return lseek(fd, offset, whence);
35 static inline ssize_t pread64(int fd, void* buf, size_t nbytes, off64_t offset) {
36 return pread(fd, buf, nbytes, offset);
40 #endif /* !HAVE_OFF64_T */
44 # define ZD_TYPE ssize_t
51 * TEMP_FAILURE_RETRY is defined by some, but not all, versions of
52 * <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
53 * not already defined, then define it here.
55 #ifndef TEMP_FAILURE_RETRY
56 /* Used to retry syscalls that can return EINTR. */
57 #define TEMP_FAILURE_RETRY(exp) ({ \
61 } while (_rc == -1 && errno == EINTR); \
65 #endif /* __LIB_UTILS_COMPAT_H */