If 'ls --color' outputs to a terminal and a syscall blocks (e.g. while reading a directory from unresponsive network file system), it cannot be interrupted by a signal.
This seems to be caused by the code of ls, which sets the SA_RESTART flag on terminating signals. A possible solution would be to reset the flag prior to calling certain blocking syscalls and process the signals synchronously in an EINTR loop. Alternatively, we can document this behavior as intended (or broken by design) and suggest users to disable color output or redirect the output off terminal to work around the issue. Any other idea how to solve it? Originally reported at: https://bugzilla.redhat.com/1365933 Kamil
