Date: Thu, 12 Nov 2009 14:52:11 +0100 From: Ed Schouten <ed@80386.nl> To: Xin LI <delphij@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r199201 - in head: contrib/libpcap sbin/ifconfig share/man/man4 sys/kern sys/net sys/sys Message-ID: <20091112135211.GT64905@hoeg.nl> In-Reply-To: <200911112130.nABLUw9b007768@svn.freebsd.org> References: <200911112130.nABLUw9b007768@svn.freebsd.org>
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Hi,
* Xin LI <delphij@FreeBSD.org> wrote:
> Modified: head/sys/net/if_var.h
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D
> --- head/sys/net/if_var.h Wed Nov 11 21:18:27 2009 (r199200)
> +++ head/sys/net/if_var.h Wed Nov 11 21:30:58 2009 (r199201)
> @@ -198,6 +198,7 @@ struct ifnet {
> void *if_pf_kif;
> void *if_lagg; /* lagg glue */
> u_char if_alloctype; /* if_type at time of allocation */
> + struct sbuf *if_description; /* interface description */
> =20
> /*
> * Spare fields are added so that we can modify sensitive data
> @@ -205,7 +206,7 @@ struct ifnet {
> * be used with care where binary compatibility is required.
> */
> char if_cspare[3];
> - void *if_pspare[8];
> + void *if_pspare[7];
> int if_ispare[4];
> };
So there used to be four chars in a row here (between if_description and
if_cspare). Are you sure moving the pointer in between doesn't increase
the structure size?
--=20
Ed Schouten <ed@80386.nl>
WWW: http://80386.nl/
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