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/*
* Copyright 2006 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 _OTAUTIL_SYSUTIL
#define _OTAUTIL_SYSUTIL
#include <sys/types.h>
#include <string>
#include <vector>
/*
* Use this to keep track of mapped segments.
*/
class MemMapping {
public:
~MemMapping();
// Map a file into a private, read-only memory segment. If 'filename' begins with an '@'
// character, it is a map of blocks to be mapped, otherwise it is treated as an ordinary file.
bool MapFile(const std::string& filename);
size_t ranges() const {
return ranges_.size();
};
unsigned char* addr; // start of data
size_t length; // length of data
private:
struct MappedRange {
void* addr;
size_t length;
};
bool MapBlockFile(const std::string& filename);
bool MapFD(int fd);
std::vector<MappedRange> ranges_;
};
#endif // _OTAUTIL_SYSUTIL
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