June 2008 - Darwin-kernel - lists.apple.com

Re: Load result 0xdc000001
by Nik Gervae 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com That's a pretty generic error from the kernel. Check your system log. --Nik On 25 Jun, 2008, at 14:53, Andreas Fink wrote: Does anyone know what kextload is trying to say when it spills out: Loading MYKEXT.kext. error: load of MYKEXT.kext failed (0xdc000001) Load result 0xdc000001 Andreas _______________________________________________ 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/ngervae%40apple.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/site_archiver%40lists.… We hope to add a mechanism to get loggable output direct from the kernel when we do a load and print it to the console, but for now you have to check the logs. This email sent to ngervae(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Load result 0xdc000001
by Andreas Fink 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Does anyone know what kextload is trying to say when it spills out: Loading MYKEXT.kext. error: load of MYKEXT.kext failed (0xdc000001) Load result 0xdc000001 Andreas _______________________________________________ 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: kextload link/load error
by Andrew Myrick 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -Andrew On Jun 25, 2008, at 2:10 PM, mm w wrote: Hi, you should read this http://developer.apple.com/documentation/DeviceDrivers/Conceptual/IOKitFund… Hi, kextload: loading extension /System/Library/Extensions/MyKext.kext/ kld(): Undefined symbols: _lck_attr_alloc_init _lck_attr_free _lck_grp_alloc_init _lck_grp_attr_alloc_init _lck_grp_attr_free _lck_grp_attr_setstat _lck_grp_free _lck_spin_alloc_init _lck_spin_free _lck_spin_lock _lck_spin_unlock kextload: kld_load_from_memory() failed for module /System/Library/Extensions/MyKext.kext/Contents/MacOS/MyKext kextload: a link/load error occured for kernel extension /System/Library/Extensions/MyKext.kext/ However, I am able to find these symbols when doing the command nm /mach_kernel | less. I am also including kernel.frameworks in my project. Any ideas what's wrong? 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/openspecies%40gmail.com This email sent to openspecies(a)gmail.com -- -mmw _______________________________________________ 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/amyrick%40apple.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/site_archiver%40lists.… On a related note, you can use the kextlibs(8) tool on Leopard systems to figure out what your OSBundleLibraries should be. On Wed, Jun 25, 2008 at 1:50 PM, Vanessa Li <Vanessa_Li(a)digidesign.com> wrote: I am trying to use a spinlock in my kext and am having problems with loading it. I am calling the initialization functions and using lck_spin_lock() and lck_spin_unlock(). Here is the error message: kextload: resolving dependencies for kernel extensions with validation and authentication failures kextload: extension /System/Library/Extensions/MyKext.kext/ appears to be loadable This email sent to amyrick(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: kextload link/load error
by mm w 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=HvFNHATYhpwL8w9GzqxvpegSHDoXj3ymlJa/xBVsOXQ=; b=g+ITqMp57M+X6evFX+nX4QZuiRV0BFSSGJw9um4Sc/7u0E9rzVkQ647JY1D6/WLXec uoHh7IEEvLICupc6hSW0yYweQdYcJdqT+2CznboPD+WwlLHs9LWTgNJR5Ivo1sCJpO46 3OI7qMpTKa9j58fL3bm4Hv7LFqvFwUeQMOf7A= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=G2Oiso3gEvshvsCKR9KqQifLwqoih0Pcm6M3la82qiQp/lOYJk6O31hFxZLeJt3Kvt CNcBEODojyX9vB8eAJH3WUQ45ldyFucBKLa6euAWnQmeG3mmK2V1EAYKc/Hd7/eavxF/ DHnHxbElwldHC44u1q/fNkcd2AIJM6XwdTigI= Hi, you should read this http://developer.apple.com/documentation/DeviceDrivers/Conceptual/IOKitFund… On Wed, Jun 25, 2008 at 1:50 PM, Vanessa Li <Vanessa_Li(a)digidesign.com> wrote: > Hi, > > > > I am trying to use a spinlock in my kext and am having problems with loading > it. I am calling the initialization functions and using lck_spin_lock() and > lck_spin_unlock(). Here is the error message: > > > > kextload: resolving dependencies for kernel extensions with validation and > authentication failures > > kextload: extension /System/Library/Extensions/MyKext.kext/ appears to be > loadable > > kextload: loading extension /System/Library/Extensions/MyKext.kext/ > > kld(): Undefined symbols: > > _lck_attr_alloc_init > > _lck_attr_free > > _lck_grp_alloc_init > > _lck_grp_attr_alloc_init > > _lck_grp_attr_free > > _lck_grp_attr_setstat > > _lck_grp_free > > _lck_spin_alloc_init > > _lck_spin_free > > _lck_spin_lock > > _lck_spin_unlock > > kextload: kld_load_from_memory() failed for module > /System/Library/Extensions/MyKext.kext/Contents/MacOS/MyKext > > kextload: a link/load error occured for kernel extension > /System/Library/Extensions/MyKext.kext/ > > > > However, I am able to find these symbols when doing the command nm > /mach_kernel | less. > > > > I am also including kernel.frameworks in my project. > > > > > > Any ideas what's wrong? > > > > 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/openspecies%40gmail.com > > This email sent to openspecies(a)gmail.com > -- -mmw _______________________________________________ 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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kextload link/load error
by Vanessa Li 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcjXBQyHrnKmMcaRT72XzOM00E+ZLQ== Thread-topic: kextload link/load error _______________________________________________ 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: dtrace with kexts?
by Wade Tregaskis 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.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/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: dtrace with kexts?
by Michael Tüxen 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Bruce, dtrace does not work with kexts. I filed a bug report on this last year with the number 5580277. It was closed because it is a duplicate of 4648477. You might also file a bug report. Maybe this gets implemented in a future version if enough people want it... Best regards Michael On Jun 25, 2008, at 9:05 PM, Bruce Foss wrote: Hi all, Thanks very much, Bruce _______________________________________________ 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/michael.tuexen%40lurch… _______________________________________________ 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.… Can I currently use dtrace on OSX to investigate my kexts, either entry/return, or with static probes? I came away from WWDC believing "yes" but, after trying for a while and after reading a few (older, but still post-Leopard release) posts here, I'm now thinking "no". Could someone please confirm this for me? If dtrace can be used, could you please point me to any relevant documentation/examples/ anything? This email sent to michael.tuexen(a)lurchi.franken.de This email sent to site_archiver(a)lists.apple.com

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Re: dtrace with kexts?
by Quinn 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.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/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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dtrace with kexts?
by Bruce Foss 25 Jun '08

25 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcjW9mO7xxywvuWfTBaX+QyBS50qTw== Thread-topic: dtrace with kexts? _______________________________________________ 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: Switching Planes
by Alexei Kosut 24 Jun '08

24 Jun '08

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Alexei _______________________________________________ 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 23, 2008, at 5:47 PM, Robert Kukuchka wrote: Is there an easy way to "switch planes" for iteration within the IORegistry? Or perhaps I'm missing some fundamental concept. Essentially I've got USB devices that I'm finding through notifications. From there I want to discover information within the context of the service plane. It seems silly for me to have to start a the root of the service plane. Can IOUsbDevice act as a "via" to another plane? Sure. Once you have a reference to a registry entry, it doesn't matter which plane you got it from; they're all the same. The specific context is I wish to discover the IOSerialBSDClients a device publishes. My thought was to get the USBDevice (such as in USBNotificationExample), then iterating the children of that device. Are you an in-kernel or user-space client? Both sets registry iteration APIs allow you to start at a specific entry in a specific plane. For the kernel, use IORegistryIterator::iterateOver(), and for a user application, call IORegistryEntryCreateIterator() and pass the appropriate entry and plane. If you just want direct children, you can simplify things by using getChildIterator() or IORegistryEntryGetChildIterator(), respectively, both of which also take the plane as an argument. This email sent to site_archiver(a)lists.apple.com

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