Date: Thu, 2 Sep 2004 09:47:49 +0300 From: Ruslan Ermilov <ru@freebsd.org> To: Alfred Perlstein <alfred@freebsd.org> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sbin/ifconfig ifconfig.c src/sys/net if.c if.h Message-ID: <20040902064749.GB43702@ip.net.ua> In-Reply-To: <20040901204452.GO31434@elvis.mu.org> References: <200409011822.i81IMERb017602@repoman.freebsd.org> <73F8DDC079929FAA3D43CA2E@caspian.scsiguy.com> <20040901204452.GO31434@elvis.mu.org>
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[-- Attachment #1 --] On Wed, Sep 01, 2004 at 01:44:52PM -0700, Alfred Perlstein wrote: > * Justin T. Gibbs <gibbs@scsiguy.com> [040901 13:43] wrote: > > > > > brooks 2004-09-01 18:22:14 UTC > > > > > > FreeBSD src repository > > > > > > Modified files: > > > sbin/ifconfig ifconfig.c > > > sys/net if.c if.h > > > Log: > > > Use a spare byte in struct if_data to store the structure size without > > > increasing it. Add code to ifconfig to use this size to find the > > > sockaddr_dl after the struct if_data in the routing message. This > > > allows struct if_data to grow (up to 255 bytes) without breaking > > > ifconfig. > > > > You could squeeze out 256 bytes if you treat 0 as meaning 256 - just like > > the SCSI protocol. > > Or treat 0 as "look at some other location for length" of int width. :) > That wouldn't be backwards compatible, which was the intent. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (FreeBSD) iD8DBQFBNsIVqRfpzJluFF4RAjFfAJ9iPqZ1r2M+8lheJZP1LhuMAu/iMwCeP6OH HNScStxiAoMWPVNXe7GxIE8= =uvh/ -----END PGP SIGNATURE-----
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