February 2005 - Darwin-kernel

AoE driver
by Sam Hopkins 10 Feb '05

10 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hello all, I'm writing an AoE (ATA over Ethernet) driver for Darwin that will enable Ethernet attached ATA devices like the Coraid EtherDrive blade (coraid.com) to be used. Our current linux and freebsd drivers have three main components: o block device interface (per AoE device) o network retransmit timer (per AoE device) o network packet handler for ethernet type 0x88a2 The AoE driver is primarily responsible for translating block read/write requests into AoE frames, retransmitting them when responses don't come back in a certain time, and acknowledging the requests as complete to the system when they do. I've read a lot of documentation on the IO Kit system, but its internals are sufficiently different from what we've previously done that I can't see a clear way to proceed. I'm confused by the driver/nub relationship. I think I need to write a provider for something in the IOStorageFamily, but I can't figure out what, nor am I clear on what my interfaces are for block reads/writes. Perhaps someone can point to some clarifying documentation here (not "IO Kit Fundamentals" -- I've read that). As for the rexmit timer, I need a way for a function to be called every X ms. So far all I've found towards this end is a way to use IOLock instead of timeout. I don't think this helps me, but perhaps I'm missing something. Lastly, I need to register an Ethernet protocol handler. I read the paper on NKEs, but am not sure whether I need a protocol handler NKE or a data link NKE. If the former, is there an ethernet domain I use in net_add_proto? If the latter, it seems I need to register a separate filter per interface? Any help would be appreciated. Cheers, Sam _______________________________________________ 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: Sample userclient for filter scheme driver
by Quinn 10 Feb '05

10 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com To: darwinKernel <darwin-kernel(a)lists.apple.com> Cc: darwindriver <darwin-drivers(a)lists.apple.com> Now i want to write userclient for this filter scheme driver so that my user space application will communicate with this driver through this userclient interface. Is there any documentation or sample code of writing userclient specific to filter scheme driver??? <http://developer.apple.com/samplecode/SimpleUserClient/SimpleUserClient.html> <http://developer.apple.com/documentation/DeviceDrivers/Conceptual/WritingDe…> 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 17:56 +0530 10/2/05, Yogesh P wrote: Please don't cross post to multiple list. It causes problems for folks, like me, who are on one list but not on the other. Writing a custom user client for a filter driver is no different than writing a custom user client for any I/O Kit drive. The SimpleUserClient sample and the standard I/O Kit documentation should set you going in the right direction. This email sent to site_archiver(a)lists.apple.com

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languagesetup command at startup
by fanny ahuja 10 Feb '05

10 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Importance: High Hi All My apologies if this mail is not meant for this mailing group. Thanks in advance -Fanny _______________________________________________ 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 want to run the languagesetup command at the Mac startup(Command+S), but I am not able to do so. Can anyone help me on how this can be done. _________________________________________________________________ The real power of teamwork. Experience it in real time. http://www.microsoft.com/india/office/experience/ Experience MS Office System. This email sent to site_archiver(a)lists.apple.com

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Sample userclient for filter scheme driver
by Yogesh P 10 Feb '05

10 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi folks, I had write the sample filter scheme driver by using Mass_Storage.pdf. My driver is working fine and exposes the media object by matching on the whole disk. Now i want to write userclient for this filter scheme driver so that my user space application will communicate with this driver through this userclient interface. Is there any documentation or sample code of writing userclient specific to filter scheme driver??? Or has anyone write sample userclient specifically for filter scheme driver??? Any pointer certainly helps. Thanks in advance Yogesh Pahilwan _______________________________________________ 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: OSBundleLibraries & Kernel symbols sharing
by Stephane Sudre 08 Feb '05

08 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On 8 févr. 05, at 18:12, Dean Reece wrote: _______________________________________________ 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.… You've just about got it. You just need to add an "OSBundleCompatibleVersion" property into A. It's value will be in the same format as the "CFBundleIdentifier" property. Taken together, these two properties form a binary compatibility version-range. The presence of this property makes kext A a library kext that is acceptable as a library for any other kext (B) asking for a version between "OSBundleCompatibleVersion" and "CFBundleIdentifier", inclusive. Have a look at any of the IOKit Family kexts for an example of this, or have a look at http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ IOKitFundamentals/Families/chapter_7_section_3.html#//apple_ref/doc/ uid/TP0000017/TPXREF104 for a brief discussion of this mechanism. Someone answered me off-line with this solution but this was not enough. The same nice person later added that I may need to use the -r option in kextload to specify where to look for the "master" kernel extension. I haven't tried it yet as I'm doing a lot of things at the same time on different OS releases but I'm optimistic on this one. This email sent to site_archiver(a)lists.apple.com

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Re: OSBundleLibraries & Kernel symbols sharing
by Dean Reece 08 Feb '05

08 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Cheers, - Dean On Feb 8, 2005, at 03:43, Stephane Sudre wrote: I have 2 Kernel Extensions A and B. _______________________________________________ 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.… Sorry - replace "CFBundleIdentifier" with "CFBundleVersion" everywhere below and it'll make more sense... - Dean On Feb 8, 2005, at 09:12, Dean Reece wrote: You've just about got it. You just need to add an "OSBundleCompatibleVersion" property into A. It's value will be in the same format as the "CFBundleIdentifier" property. Taken together, these two properties form a binary compatibility version-range. The presence of this property makes kext A a library kext that is acceptable as a library for any other kext (B) asking for a version between "OSBundleCompatibleVersion" and "CFBundleIdentifier", inclusive. Have a look at any of the IOKit Family kexts for an example of this, or have a look at http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ IOKitFundamentals/Families/chapter_7_section_3.html#//apple_ref/doc/ uid/TP0000017/TPXREF104 for a brief discussion of this mechanism. I'm seeing something strange as I thought what I wanted to do was possible but doesn't actually like to be. Kernel Extension A is loaded first and is requiring usual stuff in OSBundleLibraries. Kernel Extension B is defining one of the function of A with an extern and is including the Bundle Identifier and Version of A in the OSBundleLibraries section of the Info.plist. Now when I load B after A, this does not work as it's said that no correct version for A was found. Is it not possible to use symbols from a kext in another kext as long as you help the kext loader knows where they can be found? I was wondering if this was not linked to the fact that I'm using the default version 1.0.0d1 from the Kernel Extension template but I don't really think this is the reason. The function I'm trying to reference is not set as static or __private_extern__ in A. _______________________________________________ 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/ dean.reece%40apple.com This email sent to dean.reece(a)apple.com _______________________________________________ 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/ dean.reece%40apple.com This email sent to dean.reece(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: OSBundleLibraries & Kernel symbols sharing
by Dean Reece 08 Feb '05

08 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Cheers, - Dean On Feb 8, 2005, at 03:43, Stephane Sudre wrote: I have 2 Kernel Extensions A and B. _______________________________________________ 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.… You've just about got it. You just need to add an "OSBundleCompatibleVersion" property into A. It's value will be in the same format as the "CFBundleIdentifier" property. Taken together, these two properties form a binary compatibility version-range. The presence of this property makes kext A a library kext that is acceptable as a library for any other kext (B) asking for a version between "OSBundleCompatibleVersion" and "CFBundleIdentifier", inclusive. Have a look at any of the IOKit Family kexts for an example of this, or have a look at http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ IOKitFundamentals/Families/chapter_7_section_3.html#//apple_ref/doc/ uid/TP0000017/TPXREF104 for a brief discussion of this mechanism. I'm seeing something strange as I thought what I wanted to do was possible but doesn't actually like to be. Kernel Extension A is loaded first and is requiring usual stuff in OSBundleLibraries. Kernel Extension B is defining one of the function of A with an extern and is including the Bundle Identifier and Version of A in the OSBundleLibraries section of the Info.plist. Now when I load B after A, this does not work as it's said that no correct version for A was found. Is it not possible to use symbols from a kext in another kext as long as you help the kext loader knows where they can be found? I was wondering if this was not linked to the fact that I'm using the default version 1.0.0d1 from the Kernel Extension template but I don't really think this is the reason. The function I'm trying to reference is not set as static or __private_extern__ in A. _______________________________________________ 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/ dean.reece%40apple.com This email sent to dean.reece(a)apple.com This email sent to site_archiver(a)lists.apple.com

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OSBundleLibraries & Kernel symbols sharing
by Stephane Sudre 08 Feb '05

08 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com I have 2 Kernel Extensions A and B. _______________________________________________ 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 seeing something strange as I thought what I wanted to do was possible but doesn't actually like to be. Kernel Extension A is loaded first and is requiring usual stuff in OSBundleLibraries. Kernel Extension B is defining one of the function of A with an extern and is including the Bundle Identifier and Version of A in the OSBundleLibraries section of the Info.plist. Now when I load B after A, this does not work as it's said that no correct version for A was found. Is it not possible to use symbols from a kext in another kext as long as you help the kext loader knows where they can be found? I was wondering if this was not linked to the fact that I'm using the default version 1.0.0d1 from the Kernel Extension template but I don't really think this is the reason. The function I'm trying to reference is not set as static or __private_extern__ in A. This email sent to site_archiver(a)lists.apple.com

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Re: booting a custom darwin kernel on a powerbook
by Folkert Saathoff 07 Feb '05

07 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Feb 6, 2005, at 01:03pm, Felix Kronlage wrote: On Feb 6, 2005, at 01:30 Uhr, Markus Hitter wrote: cool thanks that did the trick. (actually, sudo mv ... did :) cheers, /folkert _folkert(a)feedface.com__________________________ _ _ _||_ www.feedface.com/folkert || www.feedface.com/folkert/pubkey _______________________________________________ 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.… Have you flushed the meta-kext as well? sudo mv /System/Library/Extensions.mkext /System/Library/Extensions.mkext.old (Not sure wether this is the right way to do it but I remember a non updated mkext can cause issues) the "correct" way is: sudo touch /System/Library/Extensions. that rebuilds the mkext cache upon next reboot. This email sent to site_archiver(a)lists.apple.com

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Re: booting a custom darwin kernel on a powerbook
by Felix Kronlage 06 Feb '05

06 Feb '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Feb 6, 2005, at 01:30 Uhr, Markus Hitter wrote: iD8DBQFCBgd6DTGb09msdNARAt9ZAJ0d2FBBQul66qe3X+/x9ceCPbw4JgCfbjKB N59M/TMXur6lZRWJmtazMrg= =RW+t -----END PGP SIGNATURE----- _______________________________________________ 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.… Have you flushed the meta-kext as well? sudo mv /System/Library/Extensions.mkext /System/Library/Extensions.mkext.old (Not sure wether this is the right way to do it but I remember a non updated mkext can cause issues) the "correct" way is: sudo touch /System/Library/Extensions. that rebuilds the mkext cache upon next reboot. or rather, where do i get the sources for the ApplePMU extension? You don't. It's closed source. Even a plain Darwin installation has a few closed source binaries. See the OpenDarwin CVS repository in src/Apple, IIRC. src/build/binary_drivers[1] is the location where it can be found (in binary format, as Markus explained) - -fkr - -- gpg-fingerprint: 076E 1E87 3E05 1C7F B1A0 8A48 0D31 9BD3 D9AC 74D0 http://fkr.hazardous.org | http://opendarwin.org/~fkr/ | FKR-RIPE -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (Darwin) This email sent to site_archiver(a)lists.apple.com

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