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