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Re: Cygwin's ioctl(SIOCGIFFLAGS) always sets the IFF_UP flag
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Wed, 3 Jan 2007 11:38:41 +0100
- Subject: Re: Cygwin's ioctl(SIOCGIFFLAGS) always sets the IFF_UP flag
- References: <email@example.com>
- Reply-to: cygwin at cygwin dot com
On Dec 28 14:58, Jonathan Lennox wrote:
> I've discovered that Cygwin's ioctl(SIOCGIFFLAGS) call always sets the
> IFF_UP flag, even if the interface being queried is disabled or
Yes, right. SIOCGIFFLAGS is just faked to handle the default case.
See fhandler_socket::ioctl(), it doesn't even call get_ifconf in case
of SIOCGIFFLAGS. The code is older than the advent of get_2k_ifconf,
Hmm, it shouldn't be too hard to support SIOCGIFFLAGS more or less
correctly starting with Windows 2000. I put this on my TODO list.
Thanks for the report,
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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