April 2003 - Darwin-kernel - lists.apple.com

Unified Buffer Cache
by Joey Echeverria 16 Apr '03

16 Apr '03

Does anybody on this list know how to increase the size of the unified buffer cache on a Darwin system? This can be either in the source code or on a running system. -Joey Joseph G. Echeverria Department of Electrical and Computer Engineering Carnegie Mellon University _______________________________________________ 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: Kext on 10.1.5
by Peter Lovell 16 Apr '03

16 Apr '03

On Wednesday, April 16, 2003, at 02:52 PM, Eric Long wrote: You mean kextload/kextunload? I noticed they have less options. I also noticed kextstat isn't available on 10.1.5. kextload on 10.1.5 is similar to that on 10.2 but doesn't have nearly as many options kmodunload has been replaced by kextunload kmodstat on 10.1.5 is now kextstat Forgive my unfamiliarity with the term... what exactly do you mean by finger-memory Just the habit of automatically keying well-known and oft-used sequences, without specifically thinking them, the way a good pianist does (I'm not one of them). For example, you'll need to remember not to type "kextstat" but "kmodstat" instead. 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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Re: Kext on 10.1.5
by Eric Long 16 Apr '03

16 Apr '03

> you can't build C++ for 10.1.5 using gcc 3.1. You have to use the older > compiler. Yeah, Godfrey "hipped" me to that. (-: > Note also that the commands used to load and unload kexts are quite > different in 10.1.5. That's not a big deal but you'll have to re-do the > finger-memory while you're testing. You mean kextload/kextunload? I noticed they have less options. I also noticed kextstat isn't available on 10.1.5. Forgive my unfamiliarity with the term... what exactly do you mean by finger-memory? Thanks, Eric Long ___________________________________________________________________________ In the movie, Jon Lovitz will play the Iraqi Information Minister. _______________________________________________ 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: Kext on 10.1.5
by Peter Lovell 16 Apr '03

16 Apr '03

On Wednesday, April 16, 2003, at 01:24 PM, Eric Long wrote: This list has helped me wrangle with some of the pitfalls with kernel extensions. Thanks to those who have provided input at various times. At present, I have a working kext for Jaguar. I'm now trying to create a version for 10.1.5. As far as I can tell, we should be able to support 10.1.5. At this point though, I'm encountering some "resistance". I found that the 2.9.5 GCC compiler used by PB, shipped with the 10.1.5 Dev tools, choked on the code. I think it should have been able to handle it, but it's not happy. For instance, I use a debugging macro with a variable arguments list, and it doesn't know how to handle it. It would be a nightmare for me to rewrite this code to suit that compiler. I was advised to obtain the April 2002 Dev tools, containing a pre-release version of PB that supports the GCC 3.1 compiler and that will run on 10.1.5. I obtained it and added the appropriate build setting to my project to compile with with GCC 3.1. The kext appears to build fine. Unfortunately, when I try to load it, I get a crop of undefined symbol errors Hi Eric, you can't build C++ for 10.1.5 using gcc 3.1. You have to use the older compiler. Aside from the typical version differences, the name-mangling changed for 3.1 and that's why you see all the undefined symbols. Note also that the commands used to load and unload kexts are quite different in 10.1.5. That's not a big deal but you'll have to re-do the finger-memory while you're testing. 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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Re: Kext on 10.1.5
by Eric Long 16 Apr '03

16 Apr '03

> Sorry mate no good answer. The 10.1.5 kernel is built with the gcc > 2.95. You will never be able to load a gcc 3.1 compiled kext on a > 10.1.x system. C'est la vie. <sigh> Thanks for the feedback, Eric Long ___________________________________________________________________________ In the movie, Jon Lovitz will play the Iraqi Information Minister. _______________________________________________ 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: Kext on 10.1.5
by Godfrey van der Linden 16 Apr '03

16 Apr '03

G'day Eric, Sorry mate no good answer. The 10.1.5 kernel is built with the gcc 2.95. You will never be able to load a gcc 3.1 compiled kext on a 10.1.x system. Godfrey At 10:24 -0700 03-4-16, Eric Long wrote: Hi all, This list has helped me wrangle with some of the pitfalls with kernel extensions. Thanks to those who have provided input at various times. At present, I have a working kext for Jaguar. I'm now trying to create a version for 10.1.5. As far as I can tell, we should be able to support 10.1.5. At this point though, I'm encountering some "resistance". I found that the 2.9.5 GCC compiler used by PB, shipped with the 10.1.5 Dev tools, choked on the code. I think it should have been able to handle it, but it's not happy. For instance, I use a debugging macro with a variable arguments list, and it doesn't know how to handle it. It would be a nightmare for me to rewrite this code to suit that compiler. I was advised to obtain the April 2002 Dev tools, containing a pre-release version of PB that supports the GCC 3.1 compiler and that will run on 10.1.5. I obtained it and added the appropriate build setting to my project to compile with with GCC 3.1. The kext appears to build fine. Unfortunately, when I try to load it, I get a crop of undefined symbol errors like these: kmodload: __ZN11OSMetaClass21_RESERVEDOSMetaClass0Ev kmodload: __ZN11OSMetaClass21_RESERVEDOSMetaClass1Ev kmodload: __ZN12IOUserClient10getServiceEv kmodload: __ZN12IOUserClient12initWithTaskEP4taskPvmP12OSDictionary kmodload: __ZN12IOUserClient13connectClientEPS_ kmodload: __ZN12IOUserClient15mapClientMemoryEmP4taskmj kmodload: __ZN15IORegistryEntry26_RESERVEDIORegistryEntry18Ev kmodload: __ZN15IORegistryEntry26_RESERVEDIORegistryEntry19Ev kmodload: __ZN8OSObject19_RESERVEDOSObject19Ev kmodload: __ZN9IOService12didTerminateEPS_mPb kmodload: __ZN9IOService12getBusyStateEv This leaves me with two questions... a) Is it safe to use the version of the pre-release GCC 3.1 compiler shipped with the April 2002 Dev tools? b) All of the undefined symbols I see seem to be IOKit related. Anyone know what's up with this? How to get around the problem? Thanks in advance, Eric Long _____________________________________________________________________ In the movie, Jon Lovitz will play the Iraqi Information Minister. _______________________________________________ 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. _______________________________________________ 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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Kext on 10.1.5
by Eric Long 16 Apr '03

16 Apr '03

Hi all, This list has helped me wrangle with some of the pitfalls with kernel extensions. Thanks to those who have provided input at various times. At present, I have a working kext for Jaguar. I'm now trying to create a version for 10.1.5. As far as I can tell, we should be able to support 10.1.5. At this point though, I'm encountering some "resistance". I found that the 2.9.5 GCC compiler used by PB, shipped with the 10.1.5 Dev tools, choked on the code. I think it should have been able to handle it, but it's not happy. For instance, I use a debugging macro with a variable arguments list, and it doesn't know how to handle it. It would be a nightmare for me to rewrite this code to suit that compiler. I was advised to obtain the April 2002 Dev tools, containing a pre-release version of PB that supports the GCC 3.1 compiler and that will run on 10.1.5. I obtained it and added the appropriate build setting to my project to compile with with GCC 3.1. The kext appears to build fine. Unfortunately, when I try to load it, I get a crop of undefined symbol errors like these: kmodload: __ZN11OSMetaClass21_RESERVEDOSMetaClass0Ev kmodload: __ZN11OSMetaClass21_RESERVEDOSMetaClass1Ev kmodload: __ZN12IOUserClient10getServiceEv kmodload: __ZN12IOUserClient12initWithTaskEP4taskPvmP12OSDictionary kmodload: __ZN12IOUserClient13connectClientEPS_ kmodload: __ZN12IOUserClient15mapClientMemoryEmP4taskmj kmodload: __ZN15IORegistryEntry26_RESERVEDIORegistryEntry18Ev kmodload: __ZN15IORegistryEntry26_RESERVEDIORegistryEntry19Ev kmodload: __ZN8OSObject19_RESERVEDOSObject19Ev kmodload: __ZN9IOService12didTerminateEPS_mPb kmodload: __ZN9IOService12getBusyStateEv This leaves me with two questions... a) Is it safe to use the version of the pre-release GCC 3.1 compiler shipped with the April 2002 Dev tools? b) All of the undefined symbols I see seem to be IOKit related. Anyone know what's up with this? How to get around the problem? Thanks in advance, Eric Long _____________________________________________________________________ In the movie, Jon Lovitz will play the Iraqi Information Minister. _______________________________________________ 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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Capturing all Key Events
by webmaster＠derman.com 15 Apr '03

15 Apr '03

Hello, I'm not sure where to post this question so I'm posting to a few groups in the hopes that someone can help me. Sorry if I've got the wrong place. I'm trying to write an application, that while active gets ALL the key events from the keyboard (including ones that the system currently consumes). I'd like to get under the OS, I think, and consume the key events before the OS has a chance at them. (ie: I would like to handle the eject key and volume keys, as well as others). Does anyone know how to do this or know of a resource that'll point me in the right direction. I've spent at least two hours reading Apple docs. My app right now can register for global hot keys but that isn't good enough for what I'm doing. I need to consume the event before any other application (or the OS) gets a chance at the event. Any ideas or info are very welcome. SDerman. Thanx in advance. _______________________________________________ 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: IOKitPersonalities
by Dean Reece 14 Apr '03

14 Apr '03

On Monday, April 14, 2003, at 09:32 AM, Dave Koziol wrote: In the start or probe routine to a KEXT, I would like to get access to the IOKitPersonalities array of my KEXT. I know I can't ready the file, but hopefully whoever is calling me has this information, and I just want to take a look at it. Is there a way I can get to this? Dave, The properties in your driver's I/O Kit personality that matched your driver in will be included in your driver's property list. There isn't any supported API for examining the properties of other I/O Kit personalities or from the top-level of the driver's plist. See IORegistryEntry::getPropertyTable() and IORegistryEntry::copyProperty(). [I don't know why you need access to this info, so I don't know if the following warning applies to your situation or not:] Please do NOT use the Info.plist as a way to communicate dynamic configuration info down to your driver. The Info.plist is cached and changes won't necessarily even be seen for several reboots. In future releases, we may see that the checksum of your driver's file have changed and consider your kext corrupted. In short, consider the Info.plist to be a read-only file: it's contents should be established when the driver is installed and should not change until/unless the driver is removed or replaced. Hope this helps, - Dean _______________________________________________ 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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IOKitPersonalities
by Dave Koziol 14 Apr '03

14 Apr '03

In the start or probe routine to a KEXT, I would like to get access to the IOKitPersonalities array of my KEXT. I know I can't ready the file, but hopefully whoever is calling me has this information, and I just want to take a look at it. Is there a way I can get to this? Dave Koziol VP Engineering IOXperts, Inc _______________________________________________ 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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