June 2005 - Darwin-kernel - lists.apple.com

Re: KEXT IP Filter sample code?
by Quinn 16 Jun '05

16 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thanks for the quick reply. I know that tcplognke is a socket filter and even though I need an IP filter it would still be helpful to see some kind of sample code, Tiger or pre-Tiger, that uses KEXT. You should check out the enetlognke. <http://developer.apple.com/samplecode/enetlognke/enetlognke.html> S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 18:39 -0700 15/6/05, Allan Hoeltje wrote: This new, Tiger-based sample is not directly relevant (it intercepts at the Ethernet layer rather than the IP layer), but it does show general NKE concepts, including packaging, memory allocation, locking, and so on. It's also much easier to understand than the tcplognke (-: ps One of the reasons that the tcplognke isn't published yet is because socket-level filters are tricky to get exactly right. The packet oriented filters (IP and Ethernet) are much easier. This email sent to site_archiver(a)lists.apple.com

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Re: KEXT IP Filter sample code?
by Allan Hoeltje 16 Jun '05

16 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Microsoft-Entourage/10.1.4.030702.0 Josh, Thanks for the quick reply. I know that tcplognke is a socket filter and even though I need an IP filter it would still be helpful to see some kind of sample code, Tiger or pre-Tiger, that uses KEXT. I am a bit concerned about writing anything at this level so any samples you have at Apple would be greatly appreciated. > The SharedIP project in darwin... I assume that you mean the SharedIP source that lives at: http://www.opensource.apple.com/projects/darwin/6.0/projects.html Are there any other projects there that would be of KEXT interest? The page could use a short descriptor that tells what the project is about. Thanks again for your help. I guess it is time for me to grab my towel, jump into KEXT, and not panic. -Allan "Josh Graessley" <jgraessley(a)apple.com> wrote on 6/15/05 5:36 PM: > > The IP filter is only available on Tiger and later. Either way, you > will need to implement two kexts, one for Mac OS X prior to Tiger and > one for Mac OS X Tiger and later. > > The SharedIP project in darwin is a sample of an IP filter. The IP > filter is pretty basic. It has two callback functions, one for > inbound packets and one for outbound packets. The real trick is > dealing with checksums if you modify packets. > > I believe the tcplognke implements a socket layer filter. It is being > rewritten to use the new KPIs on Tiger. I don't believe the new Tiger > version has been released yet. > > -josh > > On Jun 15, 2005, at 4:13 PM, Allan Hoeltje wrote: > >> I just joined the list today so I apologize if this is a frequent >> question. >> >> I need to implement an NKE Filter that modifies IP packets for a VOIP >> client, and, yes, I do need it as a KEXT and not at the app >> layer. :-) >> >> I am new to Kernel Extensions but have read the NKE and KEXT >> documentation >> in the Darwin Kernel area on the ADC. The docs refer to a >> TCPLogger socket >> NKE named tcplognke, is this code available somewhere? >> >> I am actually more interested in the capabilities of an IP Filter >> NKE, is >> there any sample code for IP Filter? >> >> >> Thanks! >> >> Allan Hoeltje > _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: KEXT IP Filter sample code?
by Josh Graessley 16 Jun '05

16 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -josh On Jun 15, 2005, at 4:13 PM, Allan Hoeltje wrote: Thanks! _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… The IP filter is only available on Tiger and later. Either way, you will need to implement two kexts, one for Mac OS X prior to Tiger and one for Mac OS X Tiger and later. The SharedIP project in darwin is a sample of an IP filter. The IP filter is pretty basic. It has two callback functions, one for inbound packets and one for outbound packets. The real trick is dealing with checksums if you modify packets. I believe the tcplognke implements a socket layer filter. It is being rewritten to use the new KPIs on Tiger. I don't believe the new Tiger version has been released yet. I just joined the list today so I apologize if this is a frequent question. I need to implement an NKE Filter that modifies IP packets for a VOIP client, and, yes, I do need it as a KEXT and not at the app layer. :-) I am new to Kernel Extensions but have read the NKE and KEXT documentation in the Darwin Kernel area on the ADC. The docs refer to a TCPLogger socket NKE named tcplognke, is this code available somewhere? I am actually more interested in the capabilities of an IP Filter NKE, is there any sample code for IP Filter? Allan Hoeltje This email sent to site_archiver(a)lists.apple.com

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KEXT IP Filter sample code?
by Allan Hoeltje 15 Jun '05

15 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Microsoft-Entourage/10.1.4.030702.0 I just joined the list today so I apologize if this is a frequent question. I need to implement an NKE Filter that modifies IP packets for a VOIP client, and, yes, I do need it as a KEXT and not at the app layer. :-) I am new to Kernel Extensions but have read the NKE and KEXT documentation in the Darwin Kernel area on the ADC. The docs refer to a TCPLogger socket NKE named tcplognke, is this code available somewhere? I am actually more interested in the capabilities of an IP Filter NKE, is there any sample code for IP Filter? Thanks! Allan Hoeltje _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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vm / physmem info
by Glen Beane 15 Jun '05

15 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Glen Beane _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm doing some experiments on on OS X system, and I need to find out how virtual memory is mapped to physical ram at a particular instance. That is I need to be able to find out what physical portions of memory are currently holding active or inactive pages, and what those pages belong to. I was hoping this would be possible to do from a kext, and I would have a client program that could connect to the kext and get a snapshot of what was going on in memory. Thus far I have been unable to find any doccumented APIs that may help me out. Does anyone have any insight or information that can help me out? This email sent to site_archiver(a)lists.apple.com

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HIDSetUsageValue() Question
by Herb Petschauer 15 Jun '05

15 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=QsbJK+/OjuwnOTMJVCql7z1yuJp70Vdkv0w79YeRH62IzHz4ddeuBmBoauSTpOLcqw/6lDAp2pX/+lHY12dHTdf51zyQDGWVZmFDiledwCWriflyPiPl6rZnP/EBCBjfFWBF6KOQ7f6rJye4ozFP72gKVG8ruYnJzchkPuDyS8Q= Hi, I need to know how to use HIDSetUsageValue() properly. Currently I'm calling status = HIDGetButtonsOnPage( kHIDInputReport, kHIDPage_Button, kHIDUsage_GD_Mouse, usageList, &usageListSize, preparsedReportDescriptorData, reportData, reportLength ); and that works great. Just for fun I'm trying to map a right click into a left click. i.e. ... for (UInt32 usageNum = 0; (result != kIOReturnSuccess) && (usageNum < usageListSize); usageNum++) { if ( (usageList[usageNum] == (kHIDUsage_Button_2)) ) { result = HIDSetUsageValue( kHIDInputReport, kHIDPage_Button, kHIDUsage_GD_Mouse, kHIDUsage_Button_4 + 1, 0, preparsedReportDescriptorData, reportData, reportLength ); ... } } the result I get from HIDSetUsageValue() and HIDGetUsageValue() for that matter is always kHIDUsageNotFoundErr. Err..., it was valid when calling HIDGetButtonsOnPage() so obviously I'm having a brain fart. The kHIDUsage_GD_Mouse for "collection" may be incorrect, I've also tried "0". Any quick pointers here? Thanks. Cheers, H. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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RE: Build kernel
by David Gatwood 13 Jun '05

13 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com . . . Later, Jake Luck <dkern(a)10k.org> wrote: Terry, check the mailing list archive from last month(May). This has already been covered. Good luck. jake Really? I saw some problems reported in bytesex.c, but not those same problems. And I never saw a resolution, either. The problems noted in the May postings have already been corrected on the website. I've just fixed the ar.h path issue and added the -version to the end of the 'cd' command, so those should be fixed the next time the docs are pushed to the web. David _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… On Jun 12, 2005, at 12:03 PM, Terry Greeniaus <tgree(a)relay.phys.ualberta.ca> wrote: cc -O -g -I../../include -Wall -Wno-long-double -no-cpp-precomp - static -c \ -MD -dependency-file ./bytesex.d \ -o ./bytesex.o ../bytesex.c ../bytesex.c: In function `swap_i386_thread_fpstate': ../bytesex.c:1316: error: structure has no member named `environ' ../bytesex.c:1316: error: structure has no member named `environ' With respect to the above failure... do you have Tiger installed? If so, do you have the developer tools corresponding with Tiger? If not, you probably have an old copy of the Kernel framework headers. Either install the Tiger dev tools or... you might also be able to fix it by changing into the xnu directory, doing a 'make installhdrs', and then copy the headers out of the resulting destination root manually. This email sent to site_archiver(a)lists.apple.com

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Re: Build kernel
by Sergey Dolgopolov 13 Jun '05

13 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Hello Sergey, Thanks! Whether is cvs to receive kernel update and kernel extensions? _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… On 11.06.2005 11:40, Jürgen Bereuter wrote: for building a new Darwin kernel look at http://developer.apple.com/ documentation/Darwin/Conceptual/KernelProgramming/build/ chapter_18_section_3.html . Should work, dont forget to set the PATH environment variable, as mentioned in note. This email sent to site_archiver(a)lists.apple.com

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RE: Build kernel
by Jake Luck 13 Jun '05

13 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Terry, check the mailing list archive from last month(May). This has already been covered. Good luck. jake _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Build kernel
by Markus Hitter 12 Jun '05

12 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Am 12.06.2005 um 22:10 schrieb Terry Greeniaus: *ouch* cd xnu . SETUP/setup.sh make exporthdrs <--- shows you the missing tools make find . -name mach_kernel # ;-) HTH, Markus - - - - - - - - - - - - - - - - - - - Dipl. Ing. Markus Hitter http://www.jump-ing.de/ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm trying to build 10.4.1 and [...] this may some day ship to customers [...] All I really want to do is build a kernel from scratch. Unpack the sources, switch gcc to 3.3, install those two helper tools (seg_hack & regedit? .. you see it ...), install libkld.a, then This off the top of my head and without having sources available right now. Last time I tried (10.4 sources), this wasn't particularly difficult and had the expected result. If it doesn't work, the error should be obvious. Surely this must be a well-known thing how to do inside Apple, multiple kernels must be compiled every day during development. Don't depend too much on this, they have similar, but different sources than those available public. If you want to join others building from Darwin sources: <http:// www.opendarwin.org/>. There's another kernel build HowTo in the FAQ, IIRC. This email sent to site_archiver(a)lists.apple.com

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