Date: Thu, 08 Nov 2012 08:26:45 -0600 From: Chuck Burns <break19@gmail.com> To: freebsd-current@freebsd.org Subject: Re: sysutils/lsof Author Question (for CLANG).... Message-ID: <509BC125.1040207@gmail.com> In-Reply-To: <509BBEDC.4070103@FreeBSD.org> References: <5d4c4abe37bd6fffd0c206c1b7b68ce1@webmail.lerctr.org> <alpine.GSO.1.10.1211071030050.2164@multics.mit.edu> <20121107213917.GD77848@eureka.lemis.com> <cdfb43c5a36fbb113194a9a381a1000b@webmail.lerctr.org> <20121107230034.GF77848@eureka.lemis.com> <509BBEDC.4070103@FreeBSD.org>
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On 11/8/2012 8:17 AM, Andriy Gapon wrote: > on 08/11/2012 01:00 Greg 'groggy' Lehey said the following: >> On Wednesday, 7 November 2012 at 16:35:22 -0600, Larry Rosenman wrote: >>> On 2012-11-07 15:39, Greg 'groggy' Lehey wrote: >>>> On Wednesday, 7 November 2012 at 10:32:23 -0500, Benjamin Kaduk >>>> wrote: >>>>> >>>>> Once again, attempting to use kernel internals outside of the >>>>> supported interfaces is just asking for trouble; I do not understand >>>>> why this message is not sinking in over the course of your previous >>>>> mails to these lists, so I will not try to belabor it further. >>>> >>>> IIRC lsof is a special case that always needs to be built with >>>> intimate knowledge of the kernel. >>> >>> This is VERY true. Since some of the information lsof uses has >>> no API/ABI/KPI/KBI to get, it grovels around in the kernel. >> >> And until those interfaces are provided, I think this is legitimate. >> If there's anybody out there who hasn't used lsof, you should try it. >> It's good. > > Just curious why lsof can't use interfaces that e.g. fstat/sockstat/etc use? > Those base utilities do not seem to experience as much trouble as lsof. > > BTW, it is still beyond me why VOP_WRITE could be of any interest to userland code > even for such a utility as lsof. > Honestly, if you do not like the way lsof does things, I'm sure patches are welcome.. -- Chuck Burns <break19@gmail.com>
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