November 2007 - Darwin-dev - lists.apple.com

Re: KUNCExectute and return values (really about something else I suspect)
by Michael Smith 22 Nov '07

22 Nov '07

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Re: KUNCExectute and return values (really about something else I suspect)
by Andrew James 22 Nov '07

22 Nov '07

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Re: KUNCExectute and return values (really about something else I suspect)
by Michael Smith 22 Nov '07

22 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Nov 22, 2007, at 12:04 PM, Andrew James wrote: = Mike _______________________________________________ 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 am developing a KEXT which requires the power source, now i have done lots of study into finding a way to access the power source information but there seems to be no obvious way for a KEXT to access this data. It's unlikely that what you want is "the power source"; it seems much more likely that you want to infer something from or about this power source. Perhaps if you were to rephrase your question in a more specific fashion, e.g. "how do I work out how to trade off power vs. performance in my KEXT", we could give you a better answer... This email sent to site_archiver(a)lists.apple.com

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Re: KUNCExectute and return values
by Brian Bergstrand 22 Nov '07

22 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Nov 22, 2007, at 1:05 PM, Andrew James wrote: Hi, Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 _______________________________________________ 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 believe the return val of KUNCExecute is whether the execute succeeded or not, not the return value of the binary being executed. So 0 would be correct - no error executing your binary. I also believe Apple has stated the KUNC functions are not the way forward (IOW, they may disappear). Your best solution would be to have a userland program pass this value to your KEXT via a more supported (and efficient) means. There are many ways to achieve this: IOKit UserClient, BSD sockets or ioctl's, and mach ports or shared memory. I am developing a KEXT which requires the power source, now i have done lots of study into finding a way to access the power source information but there seems to be no obvious way for a KEXT to access this data. Then it came to me, why not use a secondary binary which is ever so simple and all it does is return the value of the power source in a error code of the binary (10 for AC etc) However i can not work out how to retrieve the return value all i get is 0 kern_return_t ret; ret = KUNCExecute("/Users/jamesas/Projects/Build/Release/ PowerSource" , kOpenAppAsRoot, kOpenApplicationPath); IOLog ("KUNC: %d", ret); _______________________________________________ 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/brian%40classicalguitar.n… This email sent to brian(a)classicalguitar.net This email sent to site_archiver(a)lists.apple.com

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KUNCExectute and return values
by Andrew James 22 Nov '07

22 Nov '07

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Re: Daemon/launchd crashes with EXC_BREAKPOINT (SIGTRAP)
by Eric Gouriou 21 Nov '07

21 Nov '07

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Re: Daemon/launchd crashes with EXC_BREAKPOINT (SIGTRAP)
by Elango C 21 Nov '07

21 Nov '07

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Re: Daemon/launchd crashes with EXC_BREAKPOINT (SIGTRAP)
by Eric Gouriou 20 Nov '07

20 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com is throwing errors in Mac OS Leopard and crashes. Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Application Specific Information: *** single-threaded process forked *** Thread 0 Crashed: 4 Autopoll 0x00002623 main + 109 5 Autopoll 0x0000259a _start + 216 6 Autopoll 0x000024c1 start + 41 Eric _______________________________________________ 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… On Nov 20, 2007, at 12:24 AM, Elango C wrote: I have created the Daemon which will sense the USB device arrival and removal during the system startup / Login. The same application works fine in Mac OS Tiger (10.4) but the same application [...] [...] 0 com.apple.CoreFoundation 0x00b57119 CFRunLoopRunSpecific + 1833 1 com.apple.CoreFoundation 0x00b57d94 CFRunLoopRun + 84 2 Autopoll 0x00002cdb -[MyAutopoll registerDeviceCallbackHandler] + 522 3 Autopoll 0x000026e8 -[MyAutopoll init] + 114 Are you fork()'ing that process and attempting to use CF-level functionality in the fork child ? This is not supported, and in 10.5 some checks have been added to error out if CF is used in a fork child. For daemons/agents started via launchd, forking (or using daemon()) should be unnecessary. If there is a good reason for creating a new process, you'll have to exec or posix_spawn() the executable. This email sent to site_archiver(a)lists.apple.com

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Re: Daemon/launchd crashes with EXC_BREAKPOINT (SIGTRAP)
by Terry Lambert 20 Nov '07

20 Nov '07

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Daemon/launchd crashes with EXC_BREAKPOINT (SIGTRAP)
by Elango C 20 Nov '07

20 Nov '07

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