Subject: Re: iw packaging
From: Johannes Berg <johannes@sipsolutions.net>
To: Pavel Roskin <proski@gnu.org>
Cc: linux-wireless@vger.kernel.org
In-Reply-To: <1221598208.17084.11.camel@dv>
References: <1221596962.9262.12.camel@johannes.berg>
	 <1221598208.17084.11.camel@dv>
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Date: Tue, 16 Sep 2008 23:11:00 +0200
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On Tue, 2008-09-16 at 16:50 -0400, Pavel Roskin wrote:

> Sorry for diverting the thread, but the current git head (which is
> tagged as 0.9.1) is broken.
>=20
> $ ./iw=20
> Usage:  ./iw [options] command
> Options:
>         --debug         enable netlink debugging
>         --version       show version
> Commands:
>         list
>         Segmentation fault (core dumped)
>=20
> Debugging shows:
>=20
> 82              fprintf(stderr, "Commands:\n");
> (gdb)=20
> Commands:
> 83              for (cmd =3D &__start___cmd; cmd < &__stop___cmd; cmd++) =
{
> (gdb) p __start___cmd
> $1 =3D {section =3D 0x0, name =3D 0x403d02 "info", args =3D 0x0, cmd =3D =
NL80211_CMD_GET_WIPHY,=20
>   nl_msg_flags =3D 0, idby =3D CIB_PHY, handler =3D 0x402403 <handle_info=
>}
> (gdb) p *(&__start___cmd + 1)
> $2 =3D {section =3D 0x0, name =3D 0x0, args =3D 0x0, cmd =3D 4209927, nl_=
msg_flags =3D 0, idby =3D CIB_NONE,=20
>   handler =3D 0x30000000001}
> (gdb)
>=20
> That means, __start___cmd points to "info".  The next command has no
> name (and appears to be a complete mess).  The clever section trick
> doesn't seem to work properly.

Strange. It's supposed to work, it's documented that way, and it's
working fine here... Ideas anyone?

johannes

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