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Diffstat (limited to 'otautil/include/otautil/SysUtil.h')
-rw-r--r-- | otautil/include/otautil/SysUtil.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/otautil/include/otautil/SysUtil.h b/otautil/include/otautil/SysUtil.h new file mode 100644 index 00000000..52f6d20a --- /dev/null +++ b/otautil/include/otautil/SysUtil.h | |||
@@ -0,0 +1,53 @@ | |||
1 | /* | ||
2 | * Copyright 2006 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 _OTAUTIL_SYSUTIL | ||
18 | #define _OTAUTIL_SYSUTIL | ||
19 | |||
20 | #include <sys/types.h> | ||
21 | |||
22 | #include <string> | ||
23 | #include <vector> | ||
24 | |||
25 | /* | ||
26 | * Use this to keep track of mapped segments. | ||
27 | */ | ||
28 | class MemMapping { | ||
29 | public: | ||
30 | ~MemMapping(); | ||
31 | // Map a file into a private, read-only memory segment. If 'filename' begins with an '@' | ||
32 | // character, it is a map of blocks to be mapped, otherwise it is treated as an ordinary file. | ||
33 | bool MapFile(const std::string& filename); | ||
34 | size_t ranges() const { | ||
35 | return ranges_.size(); | ||
36 | }; | ||
37 | |||
38 | unsigned char* addr; // start of data | ||
39 | size_t length; // length of data | ||
40 | |||
41 | private: | ||
42 | struct MappedRange { | ||
43 | void* addr; | ||
44 | size_t length; | ||
45 | }; | ||
46 | |||
47 | bool MapBlockFile(const std::string& filename); | ||
48 | bool MapFD(int fd); | ||
49 | |||
50 | std::vector<MappedRange> ranges_; | ||
51 | }; | ||
52 | |||
53 | #endif // _OTAUTIL_SYSUTIL | ||