The explain_sethostname_or_die function is used to call the
sethostname(2) system call. On failure an explanation will be
printed to stderr, obtained from the explain_sethostname(3)
function, and then the process terminates by calling
exit(EXIT_FAILURE).
The explain_sethostname_on_error function is used to call the
sethostname(2) system call. On failure an explanation will be
printed to stderr, obtained from the explain_sethostname(3)
function, but still returns to the caller.
name
The name, exactly as to be passed to the sethostname(2) system
call.
name_size
The name_size, exactly as to be passed to the sethostname(2) system
call.
RETURN VALUE
The explain_sethostname_or_die function only returns on success,
see sethostname(2) for more information. On failure, prints an
explanation and exits, it does not return.
The explain_sethostname_on_error function always returns the value
return by the wrapped sethostname(2) system call.
EXAMPLE
The explain_sethostname_or_die function is intended to be used in a
fashion similar to the following example: