48     auto file = dir + "/" + entry->d_name;  in RemoveFilesInDir()  local
49     if (unlink(file.c_str()) == -1) {  in RemoveFilesInDir()
50       return ErrnoError() << "unlink() failed for " << file;  in RemoveFilesInDir()
95 Result<uint64_t> GetFileTimeStamp(const std::string& file) {  in GetFileTimeStamp()  argument
97   int result = stat(file.c_str(), &st);  in GetFileTimeStamp()
105 bool FileExists(const std::string& file) {  in FileExists()  argument
107   return stat(file.c_str(), &st) == 0 ? true : false;  in FileExists()
110 bool FileNonZeroSize(const std::string& file) {  in FileNonZeroSize()  argument
112   return stat(file.c_str(), &st) == 0 ? st.st_size > 0 : false;  in FileNonZeroSize()
119   for (const auto& file : files) {  in GetFilesDigest()  local
120     std::ifstream stream(file, std::ios::binary);  in GetFilesDigest()
122       return Error() << "Failed to open " << file;  in GetFilesDigest()
129         return Error() << "Failed to read " << file;  in GetFilesDigest()