void explain_tcflow_or_die(int fildes, int action);
int explain_tcflow_on_error(int fildes, int action);
DESCRIPTION
The explain_tcflow_or_die function is used to call the
tcflow(3) system call. On failure an explanation will be printed to
stderr, obtained from the explain_tcflow(3) function, and
then the process terminates by calling exit(EXIT_FAILURE).
The explain_tcflow_on_error function is used to call the
tcflow(3) system call. On failure an explanation will be printed to
stderr, obtained from the explain_tcflow(3) function, but
still returns to the caller.
fildes
The fildes, exactly as to be passed to the tcflow(3) system call.
action
The action, exactly as to be passed to the tcflow(3) system call.
RETURN VALUE
The explain_tcflow_or_die function only returns on success, see
tcflow(3) for more information. On failure, prints an explanation
and exits, it does not return.
The explain_tcflow_on_error function always returns the value
return by the wrapped tcflow(3) system call.
EXAMPLE
The explain_tcflow_or_die function is intended to be used in a
fashion similar to the following example: