From owner-freebsd-hackers Sun Jul 5 13:42:14 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA00870 for freebsd-hackers-outgoing; Sun, 5 Jul 1998 13:42:14 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from IAEhv.nl (root@iaehv.IAEhv.nl [194.151.64.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA00856 for ; Sun, 5 Jul 1998 13:42:10 -0700 (PDT) (envelope-from wjw@surf.IAE.nl) Received: from surf.IAE.nl (root@surf.IAEhv.nl [194.151.66.2]) by IAEhv.nl (8.8.7/8.8.7) with ESMTP id UAA02069; Sun, 5 Jul 1998 20:51:32 +0200 (CEST) Received: (from wjw@localhost) by surf.IAE.nl (8.8.7/8.8.7) id UAA04997; Sun, 5 Jul 1998 20:51:31 +0200 (MET DST) Date: Sun, 5 Jul 1998 20:51:31 +0200 (MET DST) From: Willem Jan Withagen Message-Id: <199807051851.UAA04997@surf.IAE.nl> To: mike@smith.net.au Subject: Re: adding to sysctl env. X-Newsgroups: list.freebsd.hackers In-Reply-To: <199807051642.JAA05317@antipodes.cdrom.com> References: <199807042215.AAA00277@hobby.digiware.nl> Organization: Internet Access Eindhoven, the Netherlands Cc: hackers@FreeBSD.ORG, wjw@digiware.nl Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In article <199807051642.JAA05317@antipodes.cdrom.com> you write: >> Hi, >> >> I'm trying to add things to the sysctl environment, and I thought to take >> a simple step first: >> make a debug.switch for the vlink module. >> So I added: >> ---- >> /* >> * For the vlink module debugging >> */ >> static int vlinkxlatedebug = 0; >> SYSCTL_INT(_debug, OID_AUTO, vlinkxlate, CTLFLAG_RW, &vlinkxlatedebug, 0, >> ""); >> ---- >> expecting to see it apear in my sysctl -a output. >> >> But guess what: I didn't. :-{ > >It should have. Make sure that the source file is actually being built >as part of the kernel. You could be more paranoid and remove the >'static', then try > ># nm /kernel | grep vlinkxlate > >in order to make sure that the symbol is present in the running kernel. It is in the kernel, even the sysctl_entry: f014b740 t _sysctl___debug_vlinkxlate as are the variable and the function: f014b7f0 T _vlink_xlate f0276f80 d _vlinkxlatedebug However it was a good hint: wjw@hobby> nm /kernel | grep __debug f011cd2c t ___set_sysctl__debug_sym_sysctl___debug f014dd24 t ___set_sysctl__debug_sym_sysctl___debug_busyprt f0120990 t ___set_sysctl__debug_sym_sysctl___debug_debugger_on_panic f01e5290 t ___set_sysctl__debug_sym_sysctl___debug_doasyncfree f010efe8 t ___set_sysctl__debug_sym_sysctl___debug_elf_trace f011603c t ___set_sysctl__debug_sym_sysctl___debug_fdexpand f01657c0 t ___set_sysctl__debug_sym_sysctl___debug_if_tun_debug f01373d8 t ___set_sysctl__debug_sym_sysctl___debug_ttydebug f0148cf8 t ___set_sysctl__debug_sym_sysctl___debug_vfscache f011cd28 t ___set_sysctl__sym_sysctl___debug f011cd04 t _sysctl___debug f014dd00 t _sysctl___debug_busyprt f0120960 t _sysctl___debug_debugger_on_panic f01e5264 t _sysctl___debug_doasyncfree f010efc0 t _sysctl___debug_elf_trace f0116014 t _sysctl___debug_fdexpand f0165794 t _sysctl___debug_if_tun_debug f01373b0 t _sysctl___debug_ttydebug f0148cd0 t _sysctl___debug_vfscache f014b740 t _sysctl___debug_vlinkxlate f0281a0c ? _sysctl__debug But I'm for shure that there a lot more debug variables which aren't shown wjw@hobby> sysctl -a | grep debug debug.elf_trace: 0 debug.fdexpand: 0 debug.debugger_on_panic: 1 debug.ttydebug: 0 debug.vfscache: 1 debug.if_tun_debug: 0 debug.doasyncfree: 1 Which is also missing busyprt! Obviously I'd atleast have to have an entry like: ___set_sysctl__debug_sym_sysctl___debug_vlinkxlate And then still run the risk that it doesn't show 'cause it is treated like busyprt Which leads me to the following question: Is there a large difference between sysctl on -stable and on -current? Why: I just feel like ripping it out because in the long run I'll problably have to do it anyways, since I need dynamic allocation for my vlink-stuff. I'd then create a double linked chain (for top level) with double-linked subschains for all the sub.mib.levels. [my first hunch] --WjW -- Internet Access Eindhoven BV., voice: +31-40-2 393 393, data: +31-40-2 606 606 P.O. 928, 5600 AX Eindhoven, The Netherlands Full Internet connectivity for only fl 12.95 a month. Call now, and login as 'new'. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message