Messages in this thread | | | Date | Fri, 28 May 2010 16:00:06 -0600 | Subject | Fwd: Question about SIOCGIFCONF | From | Jeffrey Merkey <> |
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---------- Forwarded message ---------- From: Jeffrey Merkey <jeffmerkey@gmail.com> Date: Fri, May 28, 2010 at 3:57 PM Subject: Re: Question about SIOCGIFCONF To: Eric Dumazet <eric.dumazet@gmail.com>
Not a bad suggestion, however, redhat and all the major distros still use ifconfig. Do you think this should be fixed or is it a non-issue?
Jeff
On Fri, May 28, 2010 at 2:06 PM, Eric Dumazet <eric.dumazet@gmail.com> wrote: > Le vendredi 28 mai 2010 à 13:05 -0600, Jeffrey Merkey a écrit : >> The code in question is net-tools/lib/interface.c function >> if_readproc() and associated routines. Looks like a hole. >> >> Jeff >> >> On Fri, May 28, 2010 at 1:02 PM, Jeffrey Merkey <jeffmerkey@gmail.com> wrote: >> > Review of the net-tools source code for IFCONFIG indicates that when >> > /proc is not loaded and/or /proc/net/dev is not available, IFCONFIG >> > will attempt to use this ioctl to determine which interfaces are >> > present in the system. Since the ioctl will not report unbound >> > interfaces which are active, IFCONFIG will not properly report or >> > detect network adapters which are unbound. This seems to be a hole, >> > although most of the time I assume /proc will always be mounted. >> > Someone should review this and make a decision as to whether or not >> > this could be a problem. At any rate, it does not work as advertised. >> > > > Maybe you could forget about a 20 years old legacy program and use the > real thing : ip > > ip link > ip addr > ... > > Alternatively, you could rewrite ifconfig to use modern API. > > (Not depending on /proc , at all) > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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