August 2002 - Darwin-kernel

Re: NKEs
by Justin C. Walker 20 Aug '02

20 Aug '02

On Monday, August 19, 2002, at 09:30 , devdrvr.net Multi-Platform SW wrote: Need to write one for on the fly encryption commercial project. Are there examples for how I might hook into the running packet stream and be in kernel space? There are several NKE examples in the Darwin repository: TCPLogger - an example of a "socket NKE" that grabs every incoming and outgoing TCP connection, and logs the start and termination time, along with the number of packets (as best it can tell) and bytes transmitted in each direction SharedIP - an "interface filter" NKE that is used to support the sharing of an IP address between Mac OS X and Classic to allow Classic to use its own IP stack without (much) modification. This NKE grabs all incoming and outgoing traffic that uses a specified network device (ethernet). VLan - a "psuedo network device" NKE that grabs all the traffic through a specified device, acting like a protocol on the bottom, and a device on the top, to emulate a (port on a) VLAN switch. IPFirewall - a "port" of the freebsd "ipfw" implementation, to work with Darwin and the SharedIP implementation, so it protects Classic networking as well as Mac OS X/Darwin traffic. There's also documentation in file://Developer/Documentation/Darwin/Extensions/NKE.pdf. Regards, Justin -- Justin C. Walker, Curmudgeon-At-Large * Institute for General Semantics | Men are from Earth. | Women are from Earth. | Deal with it. *--------------------------------------*-------------------------------* _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: No space in available paging segments
by Olivier Cinquin 20 Aug '02

20 Aug '02

On Tuesday, August 20, 2002, at 04:34 , David A. Gatwood wrote: On Tue, 20 Aug 2002, Olivier Cinquin wrote: Hello, I was just wondering what the following message means? Could only find an obscure reference to KDE on the Web... Aug 20 11:14:55 localhost mach_kernel: (default pager): [KERNEL]: no space in available paging segments; swapon suggested I get the message after playing animated gifs I created, which causes an incredible amount of memory thrashing when played from Web browsers, for some reason... Wow. I haven't seen that message since MkLinux DR3. Does your system crash when this happens? No, it just gets very unresponsive and spends its time swapping... The message was repeated more than 100 times within a few minutes. Olivier _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: No space in available paging segments
by David A. Gatwood 20 Aug '02

20 Aug '02

On Tue, 20 Aug 2002, Olivier Cinquin wrote: > Hello, I was just wondering what the following message means? Could only > find an obscure reference to KDE on the Web... > > Aug 20 11:14:55 localhost mach_kernel: (default pager): [KERNEL]: no > space in available paging segments; swapon suggested > > I get the message after playing animated gifs I created, which causes an > incredible amount of memory thrashing when played from Web browsers, for > some reason... Wow. I haven't seen that message since MkLinux DR3. Does your system crash when this happens? Later, David --------------------------------------------------------------------- David A. Gatwood dgatwood(a)gatwood.net Developer Docs Writer dgatwood(a)apple.com Apple Computer dgatwood(a)mklinux.org Check out my weekly web comic: http://www.techmagazine.org _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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"System Preferences Error" during driver work.
by Jay Vaughan 20 Aug '02

20 Aug '02

I've been working on a Sound driver (extension of AppleUSBAudio) today, and in the process of copying my new .kext in and out I've managed to somehow mess things up with my SysPrefs. Earlier today I got an error while trying to select the "Sound" pref panel (to select my device). The exact error from System Preferences application was "PREFERENCES ERROR - could not load 'Sound'". I don't know what I may have done to corrupt things, but the same message now appears when I try to select the Display pane as well. Does anyone know what I might have touched, or what plist might be corrupting things? I have a feeling that in the process of getting my device playing correctly with the system, something has been added to a .plist (IORegistry?) that crashes the Sound panel, and the Display panel too, for some reason. -- j. -- Jay Vaughan _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Loading KEXTs dynamically
by Peter Lovell 20 Aug '02

20 Aug '02

On Monday, August 19, 2002, at 12:25 PM, Sean McBride wrote: Can I load and use a KEXT dynamically? If so, what is the API and where would I find a source example? man kextload You really should read the various docs about IOKit and kexts, etc. Also note that the rules have changed quite substantially in Jaguar. You still use kextload to load, but it's quite a different kextload. And access permissions and ownership rules are applied to kexts now. kmodstat and kmodunload are replaced by kext-named commands. Regards.....Peter _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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No space in available paging segments
by Olivier Cinquin 20 Aug '02

20 Aug '02

Hello, I was just wondering what the following message means? Could only find an obscure reference to KDE on the Web... Aug 20 11:14:55 localhost mach_kernel: (default pager): [KERNEL]: no space in available paging segments; swapon suggested I get the message after playing animated gifs I created, which causes an incredible amount of memory thrashing when played from Web browsers, for some reason... Thanks, Olivier _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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NKEs
by devdrvr.net Multi-Platform SW 20 Aug '02

20 Aug '02

Need to write one for on the fly encryption commercial project. Are there examples for how I might hook into the running packet stream and be in kernel space? --Perry ======== 01 (530) 400-5692 [Davis, CA USA] mailto:perry_gregg@post.harvard.edu http://www.devdrvr.net/PerryCard.html ftp://www.devdrvr.net/ _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Loading KEXTs dynamically
by Shawn Erickson 20 Aug '02

20 Aug '02

On Monday, August 19, 2002, at 12:23 PM, Sean Morrell wrote: ----- Original Message ----- From: Sean McBride <sean.mcbride(a)matrox.com> To: Sean Morrell <jseanm(a)cablelynx.com>; <darwin-kernel(a)lists.apple.com> Sent: Monday, August 19, 2002 11:25 AM Subject: Re: Loading KEXTs dynamically Sean Morrell (jseanm(a)cablelynx.com) wrote: Can I load and use a KEXT dynamically? If so, what is the API and where would I find a source example? man kextload You really should read the various docs about IOKit and kexts, etc. My apologies. Let me clarify. I'm not referring to manually loading a KEXT from the command line. I want to dynamically load and use a KEXT within a driver. I do not want to load the dependent KEXT (in fact it won't load at boot time), until after boot has completed and the code from the KEXT is needed. Use IOKits driver matching facilities. Basically the same methods that got you main KEXT loaded can be used to trigger the matching, loading, probing and start of other KEXTs. See the IOKit docs and look for IOProviderClass, IOService::registerService, nubs, etc... http://developer.apple.com/techpubs/macosx/Darwin/IOKit/ IOKitFundamentals/Matching/Driver_and__ce_Matching.html http://developer.apple.com/techpubs/macosx/Darwin/Reference/Kernel/ IOService/Classes/IOService/Functions/Functions.html#registerService I have an example that covers some of this up at OpenDarwin (still trying to get time work on more and better examples). See http://opendarwin.org/cgi-bin/cvsweb.cgi/proj/IOKitExamples/. Oops... it doesn't look like I have upload that example yet, someday soon I hope. -Shawn _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Loading KEXTs dynamically
by Sean Morrell 19 Aug '02

19 Aug '02

----- Original Message ----- From: Sean McBride <sean.mcbride(a)matrox.com> To: Sean Morrell <jseanm(a)cablelynx.com>; <darwin-kernel(a)lists.apple.com> Sent: Monday, August 19, 2002 11:25 AM Subject: Re: Loading KEXTs dynamically > Sean Morrell (jseanm(a)cablelynx.com) wrote: > > >Can I load and use a KEXT dynamically? If so, what is the API and where > >would I find a source example? > > man kextload > > You really should read the various docs about IOKit and kexts, etc. My apologies. Let me clarify. I'm not referring to manually loading a KEXT from the command line. I want to dynamically load and use a KEXT within a driver. I do not want to load the dependent KEXT (in fact it won't load at boot time), until after boot has completed and the code from the KEXT is needed. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Difference between maxCapabilityForDomainState and powerStateForDomainState
by Francis bouchard 19 Aug '02

19 Aug '02

I've read the docs, but I'm not clear of the difference between the two. Can anyone shed some light on this please ? Both seems to be called before a system state change. What is the influence of both on the system ? Should I implement both or only one is needed ? Regards Francis _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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