Re: ifconfig -a blows up if /etc/mac.conf isn't installed

From: Bryan Liesner (bleez_at_comcast.net)
Date: 08/30/03

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    Date: Fri, 29 Aug 2003 23:12:48 -0400 (EDT)
To: "Kenneth D. Merry" <ken@kdm.org>

    On Fri, 29 Aug 2003, Kenneth D. Merry wrote:

    >
    > I've figured out that after some recent posix1e upgrades (mac stuff?),
    > ifconfig -a will blow up if mac.conf isn't there:
    >
    > # mv /etc/mac.conf /etc/mac.conf.backup
    > # ifconfig -a
    > fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    > inet 10.0.0.6 netmask 0xffffff00 broadcast 10.0.0.255
    > ether 00:30:48:21:bb:74
    > media: Ethernet autoselect (100baseTX <full-duplex>)
    > status: active
    > Memory fault (core dumped)

    Same here. I took a look, and found that line 62 of
    /usr/src/sbin/ifconfig/ifmac.c returns ENOENT, but the docs say this
    should return a -1. So this code looks correct.

    from ifmac.c:
      if (mac_prepare_ifnet_label(&label) == -1)

    I think the correct fix is in /usr/src/lib/libc/posix1e/mac.c
    Try this patch, rebuild libc, then rebuild ifconfig.

    --- lib/libc/posix1e/mac.c.orig Fri Aug 29 22:42:44 2003
    +++ lib/libc/posix1e/mac.c Fri Aug 29 22:43:19 2003
    @@ -365,7 +365,7 @@
                             return (mac_prepare(mac, ld->ld_labels));
             }

    - return (ENOENT); /* XXXMAC: ENOLABEL */
    + return (-1); /* XXXMAC: ENOLABEL */
     }

     int

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