fs.h revision 9685194fc94510a33201aee9b80c23f206ccfe67
1/* 2 * Copyright (C) 2012 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 __CUTILS_FS_H 18#define __CUTILS_FS_H 19 20#include <sys/types.h> 21 22#ifdef __cplusplus 23extern "C" { 24#endif 25 26/* 27 * Ensure that directory exists with given mode and owners. 28 */ 29extern int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid); 30 31/* 32 * Read single plaintext integer from given file, correctly handling files 33 * partially written with fs_write_atomic_int(). 34 */ 35extern int fs_read_atomic_int(const char* path, int* value); 36 37/* 38 * Write single plaintext integer to given file, creating backup while 39 * in progress. 40 */ 41extern int fs_write_atomic_int(const char* path, int value); 42 43#ifdef __cplusplus 44} 45#endif 46 47#endif /* __CUTILS_FS_H */ 48