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