Re: rfc: fcntl() error reporting

[David Holland <dholland-tech%netbsd.org@localhost>]

On Fri, Aug 22, 2008 at 04:45:33PM +0300, Andy Shevchenko wrote:
 > 13:38 tmp$ ./fcntl
 > rc -1, errno 14, EINVAL 22
 > 
 > I understand the NetBSD has some extension to the fcntl() which
 > possible by standard. But the errno for incorrect command values
 > should be equal to EINVAL, as far as I understood standard.

Your test program exhibits undefined behavior because it asks the
kernel to dereference an invalid pointer. EFAULT is therefore a
perfectly legitimate result.

(Although I'd argue that the process should also receive SIGSEGV.)

-- 
David A. Holland
dholland%netbsd.org@localhost