October 2006 - Darwin-dev - lists.apple.com

Re: Catching SIGBUS in Mach exception handler
by Timothy Wood 28 Oct '06

28 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Oct 24, 2006, at 10:28 AM, leenoori wrote: -tim _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… "A return value of KERN_SUCCESS indicates that the thread is to continue from the point of exception." I interpret that to mean on the next instruction, the one after the one that provoked the exception, but that doesn't seem to be happening here... The instruction that is causing the exception hasn't been executed; it raised an exception instead. So, you need to have your exception handler to "fix" the problem either by causing the memory mapping/protections to be changed, stepping past the instruction, or whatever. For example, you might want to implement a OODB by mapping in pages in a read-only fashion from the server and then marking them r/ w on the first write exception. In this case, you'd want the original instruction to actually get executed (a store of some sort) rather than skipped. This email sent to site_archiver(a)lists.apple.com

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MacOS Forge
by Dave Schroeder 27 Oct '06

27 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, When can we expect http://macosforge.org/ to return? The message says: Looking for Mac OS Forge? Mac OS Forge is temporarily offline for system improvements. Regards, Dave Schroeder University of Wisconsin - Madison _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… We regret the inconvenience, and will be back soon. Thank you for your patience. Posted by kvv on Tuesday, September 19th, 2006 at 1:30 pm I am aware that certain pieces of it are functional, but when will the public-facing site and services be back? This email sent to site_archiver(a)lists.apple.com

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Power Notifications
by Kaspar 27 Oct '06

27 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi List! Thank you! Kaspar _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I want to get notified in my daemon about power changes. I have registered myself using IORegisterForSystemPower which works perfectly with sleep and wakeup messages. But I don't get the shutdown and restart messages. What am I doing wrong? This email sent to site_archiver(a)lists.apple.com

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Re: help: g++ error on G5
by wob 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=yZf96no8kfOaojHZanUlRL9OX7Fqt17YuZ6Sc0+6xtgKRK5HaveG9wwN55ZPixvcE1z27B0PnUavFE60+EWMjhtTvg7DtLtC/yDW6BJ8SgOLuL+DVWG4C8vAJZvOoHfItTIyU9J//gUD6e+HnEJY07MuDsLBgmjkmbBJRPNRBrY= ; _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Logging from kernel
by Jim Guyton 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I've had good luck with printf over firewire. It's included with the firewire sdk. See http://developer.apple.com/sdk/ On Oct 26, 2006, at 1:42 AM, Thulli wrote: 3. asl looks very good. Is this available for a kext ? thanks in advance, Thulli. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… -- Jim Can somebody advise on the best method for logging from a kext. Considered the following. 1. printf and IOLog. I couldn't catch the logs just before my kext caused panic :) 2. Custom event logging: This method is very heavy. I don't want to write a user land tool, just for logging purpose. This email sent to site_archiver(a)lists.apple.com

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Re: Logging from kernel
by Justin C. Walker 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Oct 26, 2006, at 24:42 , Thulli wrote: Not really a solution, for the same reasons the above aren't perfect. Justin -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds ----------- I'm beginning to like the cut of his jibberish. ----------- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Can somebody advise on the best method for logging from a kext. Considered the following. 1. printf and IOLog. I couldn't catch the logs just before my kext caused panic :) These are two choices; the other is syslog(). They all are pretty much the same (i.e., they are wrappers around the same code), although IOLog is designed for IOKit components. 2. Custom event logging: This method is very heavy. I don't want to write a user land tool, just for logging purpose. 3. asl looks very good. Is this available for a kext ? Well, the header file is in /usr/include, which is a great indicator for kernel use: can't (or shouldn't) be used in the kernel. Your basic problem is that, if a panic occurs, the system grinds to a halt and therefore, any scheme that makes use of system mechanisms will halt along with it. There is not a very good way to deal with this in the field, due to the above. Andrew's suggestion is about the best that I'm aware of. The ability to send a kernel dump to a (local) dump server might be of some help, depending on how your customers are set up. This email sent to site_archiver(a)lists.apple.com

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Re: Logging from kernel
by Andrew Gallatin 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thulli writes: > Can somebody advise on the best method for logging from a kext. > Considered the following. > 1. printf and IOLog. I couldn't catch the logs just before my kext > caused panic :) If you have a dump or 2 machine debugging, did you check msgbufp->msg_bufc? In gdb, do x/s msgbufp->msg_bufc, beware that it wraps around if the machine has been up a while. Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Logging from kernel
by Thulli 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:in-reply-to:references:mime-version:content-type:message-id:cc:content-transfer-encoding:from:subject:date:to:x-mailer; b=k9UZ+D42M0CQHXQGTA/F0UPfNX6VRnZX/0yLJQmt0nGdWMKcXCCaFPs9hXX9kI94xz0eS5ZMzCyS2/09p2H7N+u4iyLzaUqYUneoKXyQ5hl/RMKRfzOMvSYe7sFnmazahA37xgWoEeTI5O7vnKqFFwDkKGuRNVPxRzfx9C3EjPs= On 26-Oct-06, at 6:29 PM, Andrew Gallatin wrote: If you have a dump or 2 machine debugging, did you check msgbufp->msg_bufc? _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Of course, I could gather info on why it caused panic using the dump or by debugging. But my problem is logging. One day, my kext would mature into a good Mac citizen. Even on that day i would be interested in my kext logs. Like the luxury of log levels and asl_log available to user land processes, something for kexts.. This email sent to site_archiver(a)lists.apple.com

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Logging from kernel
by Thulli 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:mime-version:in-reply-to:references:content-type:message-id:content-transfer-encoding:from:subject:date:to:x-mailer; b=PBlMOhZtbcihlMjuF/8VuGZzXrg4bW1PLvrLEGjgJqPCKaB/AyK6wUCE2zmhAVnYIVHz3tSaWnEzzzjKd58CRYpdk4H5JxzFWTr4s+fdbgiZhSsG7xs/zkxNvax2Y4UDVQFUyOU/QA0+9JYQ+xGQw+41ew/i22nSRrPeo/9uJ6w= 3. asl looks very good. Is this available for a kext ? thanks in advance, Thulli. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Can somebody advise on the best method for logging from a kext. Considered the following. 1. printf and IOLog. I couldn't catch the logs just before my kext caused panic :) 2. Custom event logging: This method is very heavy. I don't want to write a user land tool, just for logging purpose. This email sent to site_archiver(a)lists.apple.com

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Re: help: g++ error on G5
by Martin Costabel 26 Oct '06

26 Oct '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.7 (Macintosh/20060909) Hi there, -- Martin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… wob wrote: I got the following error when i tried to compile a C++ program (OS X 10.3.9, PowerPC): ld: /usr/lib/gcc/darwin/3.3/libgcc.a(_fixunssfdi.o) illegal reference to symbol: ___cmpdi2 defined in indirectly referenced dynamic library /usr/local/lib/libgcc_s.1.dylib Without seeing more details, the only thing one can see from this output is that you seem to be mixing different compilers, which is always a dangerous thing to do. Some of the objects that you are linking now have been compiled using (at least parts of) a compiler that lives in /usr/local, not the Apple gcc-3.3 that you are using now. This email sent to site_archiver(a)lists.apple.com

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