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64 lines
2.0 KiB
64 lines
2.0 KiB
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_LIBARTBASE_BASE_OS_H_
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#define ART_LIBARTBASE_BASE_OS_H_
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#include <stdint.h>
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namespace unix_file {
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class FdFile;
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} // namespace unix_file
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namespace art {
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typedef ::unix_file::FdFile File;
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// Interface to the underlying OS platform.
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class OS {
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public:
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// Open an existing file with read only access.
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static File* OpenFileForReading(const char* name);
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// Open an existing file with read/write access.
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static File* OpenFileReadWrite(const char* name);
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// Create an empty file with read/write access. This is a *new* file, that is, if the file
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// already exists, it is *not* overwritten, but unlinked, and a new inode will be used.
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static File* CreateEmptyFile(const char* name);
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// Create an empty file with write access. This is a *new* file, that is, if the file
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// already exists, it is *not* overwritten, but unlinked, and a new inode will be used.
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static File* CreateEmptyFileWriteOnly(const char* name);
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// Open a file with the specified open(2) flags.
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static File* OpenFileWithFlags(const char* name, int flags, bool auto_flush = true);
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// Check if a file exists.
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static bool FileExists(const char* name, bool check_file_type = true);
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// Check if a directory exists.
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static bool DirectoryExists(const char* name);
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// Get the size of a file (or -1 if it does not exist).
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static int64_t GetFileSizeBytes(const char* name);
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};
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} // namespace art
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#endif // ART_LIBARTBASE_BASE_OS_H_
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