91 Result<void> WalkDir(const std::string& path, Fn fn) {  in WalkDir()  argument
94   auto it = fs::directory_iterator(path, ec);  in WalkDir()
101     return Error() << "Can't open " << path  in WalkDir()
108 Result<std::vector<std::string>> ReadDir(const std::string& path, FilterFn fn) {  in ReadDir()  argument
112   auto status = WalkDir(path, [&](const fs::directory_entry& entry) {  in ReadDir()
114       ret.push_back(entry.path());  in ReadDir()
123 inline bool IsEmptyDirectory(const std::string& path) {  in IsEmptyDirectory()  argument
124   auto res = ReadDir(path, [](auto _) { return true; });  in IsEmptyDirectory()
128 inline Result<void> createDirIfNeeded(const std::string& path, mode_t mode) {  in createDirIfNeeded()  argument
131   if (stat(path.c_str(), &stat_data) != 0) {  in createDirIfNeeded()
133       if (mkdir(path.c_str(), mode) != 0) {  in createDirIfNeeded()
134         return ErrnoError() << "Could not mkdir " << path;  in createDirIfNeeded()
137       return ErrnoError() << "Could not stat " << path;  in createDirIfNeeded()
141       return Error() << path << " exists and is not a directory.";  in createDirIfNeeded()
147   if (chmod(path.c_str(), mode) != 0) {  in createDirIfNeeded()
148     return ErrnoError() << "Could not chmod " << path;  in createDirIfNeeded()
154 inline Result<void> DeleteDirContent(const std::string& path) {  in DeleteDirContent()  argument
155   auto files = ReadDir(path, [](auto _) { return true; });  in DeleteDirContent()
157     return Error() << "Failed to delete " << path << " : " << files.error();  in DeleteDirContent()
167 inline Result<void> DeleteDir(const std::string& path) {  in DeleteDir()  argument
170   fs::remove_all(path, ec);  in DeleteDir()
172     return Error() << "Failed to delete path " << path << " : " << ec.message();  in DeleteDir()
177 inline Result<ino_t> get_path_inode(const std::string& path) {  in get_path_inode()  argument
180   if (stat(path.c_str(), &buf) != 0) {  in get_path_inode()
181     return ErrnoError() << "Failed to stat " << path;  in get_path_inode()
187 inline Result<bool> PathExists(const std::string& path) {  in PathExists()  argument
191   if (!fs::exists(fs::path(path), ec)) {  in PathExists()
193       return Error() << "Failed to access " << path << " : " << ec.message();  in PathExists()
208 inline Result<void> WaitForFile(const std::string& path,  in WaitForFile()  argument
214     if (stat(path.c_str(), &sb) != -1) {  in WaitForFile()
216         LOG(INFO) << "wait for '" << path << "' took " << t;  in WaitForFile()
223   return ErrnoError() << "wait for '" << path << "' timed out and took " << t;  in WaitForFile()
226 inline Result<std::vector<std::string>> GetSubdirs(const std::string& path) {  in GetSubdirs()  argument
237   return ReadDir(path, filter_fn);  in GetSubdirs()