August 2005 - Darwin-kernel

Re: kern_control question
by Peter Lovell 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Vincent, thanks for this update. This makes my changes simpler. Best regards......Peter On Aug 17, 2005, at 4:16 PM, Vincent Lubet wrote: Peter, Vincent On Aug 17, 2005, at 1:04 PM, Peter Lovell wrote: However, I can work around the issue. Thanks for the confirmation. Regards.....Peter On Aug 17, 2005, at 2:50 PM, Josh Graessley wrote: That is correct. You can use socket options instead. -josh On Aug 17, 2005, at 11:43 AM, Peter Lovell wrote: This email sent to jgraessley(a)apple.com This email sent to vlubet(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/site_archiver%40lists.… In fact, starting with Mac OS X 10.4.2, a call to getsockopt() on a kernel control socket will copy the user data into the kernel buffer. This should provide for the read/write behavior you're looking for. Actually they're not quite equivalent. ioctl allows the data area to be read/write, but socket options are one or the other, not both. Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user- defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? Thanks.....Peter _______________________________________________ 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/jgraessley% 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/vlubet% 40apple.com This email sent to site_archiver(a)lists.apple.com

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Re: kern_control question
by Josh Graessley 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com They are not the same. But... -josh On Aug 17, 2005, at 1:04 PM, Peter Lovell wrote: However, I can work around the issue. Thanks for the confirmation. Regards.....Peter On Aug 17, 2005, at 2:50 PM, Josh Graessley wrote: That is correct. You can use socket options instead. -josh On Aug 17, 2005, at 11:43 AM, Peter Lovell wrote: This email sent to jgraessley(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/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com You can use the getsockopt in a similar way to ioctl. For kernel control sockets, the contents of the buffer passed to the socket option is copied in to the kernel's address space before the option is passed off to the registered kernel control. In this way, you may use the getsockopt as read/write. This behavior is new as of 10.4.2. This change was made at the request of a third party. Actually they're not quite equivalent. ioctl allows the data area to be read/write, but socket options are one or the other, not both. Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user- defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? Thanks.....Peter _______________________________________________ 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/jgraessley% 40apple.com smime.p7s

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Re: kern_control question
by Vincent Lubet 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Peter, Vincent On Aug 17, 2005, at 1:04 PM, Peter Lovell wrote: However, I can work around the issue. Thanks for the confirmation. Regards.....Peter On Aug 17, 2005, at 2:50 PM, Josh Graessley wrote: That is correct. You can use socket options instead. -josh On Aug 17, 2005, at 11:43 AM, Peter Lovell wrote: This email sent to jgraessley(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/site_archiver%40lists.… In fact, starting with Mac OS X 10.4.2, a call to getsockopt() on a kernel control socket will copy the user data into the kernel buffer. This should provide for the read/write behavior you're looking for. Actually they're not quite equivalent. ioctl allows the data area to be read/write, but socket options are one or the other, not both. Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user- defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? Thanks.....Peter _______________________________________________ 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/jgraessley% 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/vlubet% 40apple.com This email sent to vlubet(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: kern_control question
by Peter Lovell 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com However, I can work around the issue. Thanks for the confirmation. Regards.....Peter On Aug 17, 2005, at 2:50 PM, Josh Graessley wrote: That is correct. You can use socket options instead. -josh On Aug 17, 2005, at 11:43 AM, Peter Lovell wrote: This email sent to jgraessley(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/site_archiver%40lists.… Actually they're not quite equivalent. ioctl allows the data area to be read/write, but socket options are one or the other, not both. Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user- defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? Thanks.....Peter _______________________________________________ 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/jgraessley% 40apple.com This email sent to site_archiver(a)lists.apple.com

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Re: kern_control question
by Josh Graessley 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com That is correct. You can use socket options instead. -josh On Aug 17, 2005, at 11:43 AM, Peter Lovell wrote: This email sent to jgraessley(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/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user- defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? Thanks.....Peter _______________________________________________ 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/jgraessley% 40apple.com smime.p7s

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kern_control question
by Peter Lovell 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thanks.....Peter _______________________________________________ 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.… Hi all, this is a question for which I think I have the answer but I'm posing it just to make sure I haven't overlooked anything. It seems to me that kern_control sockets do not support user-defined ioctls, just CTLIOCGCOUNT and CTLIOCGINFO. Is this correct? This email sent to site_archiver(a)lists.apple.com

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Re: Got boot device
by Justin C. Walker 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Aug 17, 2005, at 02:48 , Sam Hart wrote: Just FYI Cheers, Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for General Semantics -------- Some people have a mental horizon of radius zero, and call it their point of view. -- David Hilbert -------- _______________________________________________ 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.… cscope is available via DarwinPorts <http:// darwinports.opendarwin.org/> It's also included in a "normal" install (there may be version differences, though). This email sent to site_archiver(a)lists.apple.com

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Re: Got boot device
by Sam Hart 17 Aug '05

17 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Just FYI cscope is available via DarwinPorts <http://darwinports.opendarwin.org/> S a m _______________________________________________ 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: Got boot device
by Mike Smith 16 Aug '05

16 Aug '05

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: Got boot device
by Justin C. Walker 16 Aug '05

16 Aug '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Aug 15, 2005, at 18:58 , Herbert wrote: Cheers, Justin -- Justin C. Walker, Curmudgeon-at-Large /~\ The ASCII \ / Ribbon Campaign X Help Cure HTML Email / \ _______________________________________________ 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.… Does anyone know how/where the "Got boot device = etc" line is fetched? If you mean "where in the source for the kernel does this message originate", then you should become acquainted with 'cscope' and the xnu source. You get the latter from the darwin page at Apple's developer site. Once it's installed, do "make cscope" in the root directory of that source tree, and then use 'cscope' to search for that string. This email sent to site_archiver(a)lists.apple.com

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