February 2003 - Darwin-kernel

(no subject)
by saga 02 Feb '03

02 Feb '03

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Re: Kernel -> user boundary
by George André 01 Feb '03

01 Feb '03

This is now fixed, read below. Umesh Vaishampayan wrote: Why can't you do what you want to do in *your* VOP_INACTIVE? I can't do it in VOP_INACTIVE because that's (usually) called way later, mostly when we eject the drive. But since this driver is a hot pluggable device, the user can just yank the device out bypassing our filtering. Also that would not get you immediate results. This has been fixed now by monitoring VOP_LOOKUP after we rename the file and faking VOP_LOOKUP's componentnames' cn_pnbuf and cn_nameptr for operation LOOKUP. So any VOP_LOOKUP operations on the old file name are changed to ops on the new name, all this seamless. I do this for a while until I see a VOP_LOOKUP with the new name. Thanks, George. --Umesh Godfrey van der Linden wrote: At 21:09 +0100 03-1-27, George Andri wrote: Hi there, I am aware of user -> kernel boundary crossing, like Mach IPC, RPC, syscall, sysctl and ioctl. But I'm interested ina kernel -> user *initiated* connection, is there anything outthere? I have a kext that needs to initiate communication with an user process. I can alternatively let the user process initiate the connection in one of the above ways and then pass a data pool pointer, but that would be a lot harder. IS there anything I can do or use to initiate a kernel -> user crossing without user parts help? Not really. Do you have a user land app that you are talking to? If so it is pretty easy to emulate a kernel initiated event. What do you want to happen in user land when the kernel hits something. I guess what I'm asking is what problem are you actually trying to solve. Godfrey van der Linden _______________________________________________ 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. -- Umesh Vaishampayan Mac OS X - Kernel _______________________________________________ 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: Help recompiling xnu kernel.
by Ethan Clark 01 Feb '03

01 Feb '03

It is possible to build xnu on 10.2.3, but the sources for the current (10.2.3) version are not yet available. You shouldn't have to revert to an older version of OS X just to compile the kernel, though. In theory, you should even be able to boot from the slightly older version of the kernel that you'd be able to build (10.2.2 is the latest sources available, if I recall correctly). Documentation on building the kernel is rather outdated -- at least the documentation on developer.apple.com. There are updated docs written by jpm at opendarwin, though: http://opendarwin.org/~jpm/index.html Hopefully this helps :-) Ethan Clark _______________________________________________ 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: Help recompiling xnu kernel.
by Jeff Jenkins 01 Feb '03

01 Feb '03

Hi, The sources to 10.2.3 are not available...yet. For instructions on building the kernel, see: http://opendarwin.org/~jpm/xnu.html -- jrj On Friday, January 31, 2003, at 03:16 PM, Mr. Wong wrote: Hello everyone, I am new to Mac OS X and relatively new to unix environments. I am presently trying to recompile the Darwin Kernel (specifically the Mach kernel or XNU portion of Darwin) but I have noticed that the documentation has changed or is in a constant state of flux. Currently, I am running OS 10.2.3. Is it possible to rebuild the Mach Kernel with my OS or do I need to have an older (pre 10.2.3) OS to do it. If anybody out there has any suggestions I would appreciate any help. Thanks, Matthew K. Wong _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 _______________________________________________ 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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Error compiling cctools from source
by Mr. Wong 01 Feb '03

01 Feb '03

Hi, has anyone encountered this cctools compile time error before? /System/Library/Frameworks/Kernel.framework/Headers/sys/file.h:63: header file 'sys/unistd.h' not found cpp-precomp: warning: errors during smart preprocessing, retrying in basic mode make[1]: *** [pass1.o] Error 1 make: *** [kld_build] Error 2 I was following the instructions for building the xnu kernel found at this URL: http://developer.apple.com/techpubs/macosx/Darwin/General/KernelProgramming… Please help! Matthew k. Wong _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus _______________________________________________ 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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