August 2005 - Darwin-kernel

How to tell Xcode to look for missing symbols?
by Stephane Sudre 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Yet, it's a bit clumsy to have to load the kext to find missing symbols. Is there a workaround for this? _______________________________________________ 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.… Is there a way to tell Xcode to detect missing symbols in a Kext project? Missing symbols are not detected when you're building a Kernel Extension because they can be defined in another kernel extension (maybe). This email sent to site_archiver(a)lists.apple.com

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RE: Error while compilation of apple gdb-309 on Linux
by Priti Rathi 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcWcIt9a8yA+IzfeTGSElntDqP9tvQAAnIQg It worked :). Thanks for your help. > -----Original Message----- > From: Andrew Gallatin [mailto:gallatin@cs.duke.edu] > Sent: Monday, August 08, 2005 7:40 PM > To: priti.rathi(a)wipro.com > Cc: darwin-kernel(a)lists.apple.com > Subject: RE: Error while compilation of apple gdb-309 on Linux > > > priti.rathi(a)wipro.com writes: > > > > But all seems to be warnings ..you were saying to use cpu_to_le16 and > other functions, how to use it? > > > > > > My first reaction was to #define the Apple byte swapping routines to the > native > linux byteswapping routines, since you reported messages to the effect > that the Apple routines were undeclared or undefined. > > However, this was based purely on the error message you posted > earlier, and I haven't actually looked at where/how they are defined, > and if they would magically appear if you defined some other symbol > (like the endianness) you'll have to do that research for yourself. > > BTW, these questions are really more appropriate for darwin-dev, I > think. There's really nothing specific to the kernel here. > > Good luck. > > Drew Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or Mailadmin(a)wipro.com immediately and destroy all copies of this message and any attachments. _______________________________________________ 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: Mac OS X 10.4 (Tiger) compilation errors ( GCC v3.3 ) with X Code 2.0 tool
by Andrew Gallatin 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Karunakar Reddy G writes: > But it is defined on Tiger as follows > *int* *copyin*(*const* user_addr_t *uaddr*, *void* **kaddr*, *size**_**t* * > len*); > *int* *copyout*(*const* *void* **kaddr*, user_addr_t *udaddr*, *size**_**t* > *len*); > Now, My problem is I don't have option to copy void * to void *, which is > very important in my driver, why they removed such a beautiful option? > Is there any other new functions are available? > Is it possible to use same functions, then can any one have example to use > of them? The move to user_addr_t was done so that Apple could continue to have a 32-bit kernel and still deal with 64-bit applications. If you're talking to a 64-bit application, a kernel's void* is only 32-bits, so any address above 4GB would not be accessible to copyin or copyout. I had to go through our code, identify anything which is used to store a user address, and convert it to use a user_addr_t. I expect you are about to emark on a similar fun experience. <rant> This was an enormous pain for me to deal with, since on every other operating system we support (even the real 64-bit ones) a kernel void* is wide enough to hold any user pointer. It would have been much easier for us to use a Solaris (or AIX) like driver model, where you supply a 32- and 64- bit driver, and the appropriate one gets loaded depending on the booted kernel. This would have been especially easy with fat binaries. </rant> OTOH, you can avoid the whole mess if you're willing to limit yourself to dealing only with 32-bit processes. Then you can just cast things down to a void*. Drew _______________________________________________ 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: Mac OS X 10.4 (Tiger) compilation errors ( GCC v3.3 ) with X Code 2.0 tool
by Karunakar Reddy G 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=lt0mThFb++XTIQpDGa6N+Z0wApj8mpjU+p7necucevGS66ToaBnihIs3qKicfp7+cgoSa2wcpxBSqwCjDV5Oy8FYtW+JHIZZ3xuNgeQ4T/psPYM2N8Y3Vd2tK6UOBFZvudcp3fyQeOnPYIohk3dAyjgxFoTivzQZR8cc74PFEuY= _______________________________________________ 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: Error while compilation of apple gdb-309 on Linux
by Andrew Gallatin 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com priti.rathi(a)wipro.com writes: > > But all seems to be warnings ..you were saying to use cpu_to_le16 and other functions, how to use it? > My first reaction was to #define the Apple byte swapping routines to the native linux byteswapping routines, since you reported messages to the effect that the Apple routines were undeclared or undefined. However, this was based purely on the error message you posted earlier, and I haven't actually looked at where/how they are defined, and if they would magically appear if you defined some other symbol (like the endianness) you'll have to do that research for yourself. BTW, these questions are really more appropriate for darwin-dev, I think. There's really nothing specific to the kernel here. Good luck. Drew _______________________________________________ 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: Error while compilation of apple gdb-309 on Linux
by priti.rathi＠wipro.com 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcWcHpSOQ13vRTHTQsGct2ei/gfq5AAAmQQmAABfEmY= Thread-topic: Error while compilation of apple gdb-309 on Linux _______________________________________________ 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: Checksums on modified inbound packets?
by Frank Thomas 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=kEYLsRQy9jB9V7cijXxQzO0YXpiuirUBPSVJxIKFo6bt2tZ2nyrPkKBFzrMFs9rt0oMIFGIKkmG41/MJ73mwYK1nCarD28eiYtzRYRaSTnVp7TiMliQ2YqLsvr9dRztaskWo/oaipxEOTtWwlm5iWi6k10KhX6O9/sYrBRkwL3Y= On 8/5/05, Josh Graessley <jgraessley(a)apple.com> wrote: > If you're going to modify the packet, you should modify the checksum > appropriately. If you choose to recalculate the checksum entirely, > you should verify the original checksum is correct before making any > modifications to the packet. Once the checksum has been updated, call > mbuf_inbound_modified to flush the invalid hardware checksum flags. > > -josh > Are there any API's provided to do this, or do I need to write my own checksum functions? - Frank _______________________________________________ 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: Error while compilation of apple gdb-309 on Linux
by Andrew Gallatin 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Priti Rathi writes: > > Oh like that :),Hmm how to remove this Apple-ism? > It is already defined in the header file. In the example you posted, it was only defined when __MWERKS__ is defined. Gcc on linux does not define __MWERKS__ -- I imagine a compiler made by MetroWerks must define it. Like I said before, just define it away to something harmless. Eg: gcc -D__private_extern__='', or edit the header file an add something like #if !defined(__private_extern__) #define __private_extern__ #endif Drew _______________________________________________ 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: Error while compilation of apple gdb-309 on Linux
by Priti Rathi 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcWcG6GmPnbiByqDRFa9gDyVitpdsgAAD2QQ Oh like that :),Hmm how to remove this Apple-ism? It is already defined in the header file. > -----Original Message----- > From: Andrew Gallatin [mailto:gallatin@cs.duke.edu] > Sent: Monday, August 08, 2005 6:47 PM > To: priti.rathi(a)wipro.com > Cc: darwin-kernel(a)lists.apple.com > Subject: RE: Error while compilation of apple gdb-309 on Linux > > > priti.rathi(a)wipro.com writes: > > BTW what is Apple-ism? > > > > A term for a non-standard extention to the C language which is Apple > specific. > > Drew Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or Mailadmin(a)wipro.com immediately and destroy all copies of this message and any attachments. _______________________________________________ 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: Error while compilation of apple gdb-309 on Linux
by Andrew Gallatin 08 Aug '05

08 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com priti.rathi(a)wipro.com writes: > BTW what is Apple-ism? > A term for a non-standard extention to the C language which is Apple specific. Drew _______________________________________________ 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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