977 static std::error_code copy_file_internal(int ReadFD, int WriteFD) {  in copy_file_internal()  argument
982     BytesRead = read(ReadFD, Buf, BufSize);  in copy_file_internal()
1003   int ReadFD, WriteFD;  in copy_file()  local
1004   if (std::error_code EC = openFileForRead(From, ReadFD, OF_None))  in copy_file()
1008     close(ReadFD);  in copy_file()
1012   std::error_code EC = copy_file_internal(ReadFD, WriteFD);  in copy_file()
1014   close(ReadFD);  in copy_file()
1022   int ReadFD;  in copy_file()  local
1023   if (std::error_code EC = openFileForRead(From, ReadFD, OF_None))  in copy_file()
1026   std::error_code EC = copy_file_internal(ReadFD, ToFD);  in copy_file()
1028   close(ReadFD);  in copy_file()