android_system_core/include/cutils/fs.h
Jeff Sharkey 9685194fc9 File-system utilities for installd and zygote.
Bug: 7008879
Change-Id: Ia54b8d4ad434e8973f235e2a4728651814bef8a9
2012-08-30 10:29:41 -07:00

47 lines
1.3 KiB
C

/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __CUTILS_FS_H
#define __CUTILS_FS_H
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Ensure that directory exists with given mode and owners.
*/
extern int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid);
/*
* Read single plaintext integer from given file, correctly handling files
* partially written with fs_write_atomic_int().
*/
extern int fs_read_atomic_int(const char* path, int* value);
/*
* Write single plaintext integer to given file, creating backup while
* in progress.
*/
extern int fs_write_atomic_int(const char* path, int value);
#ifdef __cplusplus
}
#endif
#endif /* __CUTILS_FS_H */