Date: Mon, 28 Feb 2000 11:30:27 -0800 (PST) From: Guido van Rooij <guido@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/net if.c Message-ID: <200002281930.LAA46724@freefall.freebsd.org>
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guido 2000/02/28 11:30:27 PST
Modified files:
sys/net if.c
Log:
This fixes a problem where the SIOCGIFCONF ioctl goes wrong. This
is triggered when qmail is used with INET6 enabled. The bug
manifests itself in that the space variable can become negative
and that in the comparison in the guards of the 2 loops, this was
not noticed because sizeof() returns an unsigned and thus the signed
variable gets promoted to unsigned. I decided not to make space
unsigned because I think we should guard against this from happening.
Thus panic() in case space becomes negative.
Approved by: jkh
Revision Changes Path
1.85 +10 -2 src/sys/net/if.c
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