1 /*
2  * Copyright (C) 2018 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 IDMAP2_INCLUDE_IDMAP2_FILEUTILS_H_
18 #define IDMAP2_INCLUDE_IDMAP2_FILEUTILS_H_
19 
20 #include <sys/types.h>
21 
22 #include <functional>
23 #include <memory>
24 #include <string>
25 #include <vector>
26 
27 namespace android::idmap2::utils {
28 
29 constexpr const char* kIdmapCacheDir = "/data/resource-cache";
30 constexpr const mode_t kIdmapFilePermissionMask = 0133;  // u=rw,g=r,o=r
31 
32 typedef std::function<bool(unsigned char type /* DT_* from dirent.h */, const std::string& path)>
33     FindFilesPredicate;
34 std::unique_ptr<std::vector<std::string>> FindFiles(const std::string& root, bool recurse,
35                                                     const FindFilesPredicate& predicate);
36 
37 std::unique_ptr<std::string> ReadFile(int fd);
38 
39 std::unique_ptr<std::string> ReadFile(const std::string& path);
40 
41 bool UidHasWriteAccessToPath(uid_t uid, const std::string& path);
42 
43 }  // namespace android::idmap2::utils
44 
45 #endif  // IDMAP2_INCLUDE_IDMAP2_FILEUTILS_H_
46