March 2009 - Darwin-dev - lists.apple.com

sector encryption with efi password prompt
by Joel Reymont 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(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:from:to :content-type:content-transfer-encoding:mime-version:subject:date :x-mailer; bh=zVodxzaSOLw/SAZXz6PNdSFrQnqxugr7CdljkFHzLik=; b=mIqrqgh24XrVn2/2GL4TeE3ghRXzlvX8zgTOejDEkXItDwpBdzZtpVnxz6rqleaJ+w K12rQfd8TMUfsCEDs4AUUliUPjDebS+hcqP3DGJ3Dea8ojfJjORnEUrkpk/8Er0GYwiF YT4kWyRb3pmaegH2eurciwgDX2+mKsg2qUrwc= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date:x-mailer; b=Ipp3dhS3rgYZBfQ9b1dOZUf7wQ15WpXwGg4olaiO38LjgaONW0hPH6bsIP5ClV0pde ekGZsf0ml04IUieq0X8zIdpeKm03ByQSn/M5PL5TxMAeLtDjBqD16oYGxrzAbruhhn8x Z/dwaO7GYkl7zUutLZS4kOzy2eCFLujfgfQcQ= I would like to implement disk sector encryption under Mac OSX. What would be the best point in the driver tree to insert my driver? Thanks in advance, Joel --- http://tinyco.de Mac, Lisp, OCaml _______________________________________________ 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… The idea is to create a custom EFI boot loader to ask for a password, store that somewhere (NVRAM?) and then encrypt and decrypt disks sector by sector. It's different from what FileVault does as it encrypts disk volumes. This email sent to site_archiver(a)lists.apple.com

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Re: Powerdown notification
by Ethan Bold 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi Matt- -Ethan On Mar 16, 2009, at 6:54 AM, Matthew Mashyna wrote: void myPowerDownCallback(void *refcon, io_service_t service, uint32_t messageType, void *messageArgument ) { DLog(@"System shutdown message!"); [gDaemon systemWillPowerOff]; } // myPowerDownCallback // from my initialization code { ... IONotificationPortRef thePortRef; io_object_t notifier; io_connect_t c = IORegisterForSystemPower(NULL, &thePortRef, myPowerDownCallback, &notifier ); } Thanks, Matt _______________________________________________ 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/ebold%40apple.com _______________________________________________ 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… IOKit does not provide any notifications of system shutdown. The IORegisterForSystemPower() API call that you make below only refers to system sleep & wake power events, not shutdown events - the argument messageType may be kIOPMMessageCanSystemSleep, kIOPMMessageSystemWillSleep, kIOPMMessageSystemWillNotSleep, kIOPMMessageSystemHasPoweredOn, kIOPMMessageSystemWillPowerOn. That's all - no messages sent on shutdown. I'd suggest two options: (1) explore further in the NSWorkspace API area. I don't know anything about that and I'm not sure anything exists, but it's my next best guess. (2) Rely on the fact that xnu BSD code will kill your process at shutdown time, first with a SIGTERM, and then later a SIGKILL to any remaining processes. If you handle the SIGTERM, you can signal to your server at that time. Of course, anyone can send a SIGTERM to your process without shutting down the machine. However, off the top of my head I don't know if you're guaranteed full network functionality at this point - configd and network processes may be killed at the same time you are. (See xnu/bsd/kern/kern_shutdown.c) I'm sorry for having to ask a noob question. I posted this to the Darwin user list last week but didn't get any replies. I have a Cocoa daemon that needs to monitor system events and relay them to a server. Using NSWorkspace notification I get sleep and wake messages but I can't seem to get the power down notification. So, other cocoa developers pointed me to using IOKit. I tried this from my daemon I don't think the callback gets called. I suppose that it could be interrupted before it can send its message but I really don't think I'm getting the callback. I'm a complete noob with it comes to IOKit. Can someone tell me where I'm going wrong ? This email sent to ebold(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Install 10.4 on MacMini intel
by Joe van Tunen 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: Acmn5EWrhIDKBhPXEd6U0QAX8uBReA== Thread-topic: Install 10.4 on MacMini intel User-agent: Microsoft-Entourage/11.4.0.080122 > From: Chris Ridd <chrisridd(a)mac.com> > Subject: Re: Install 10.4 on MacMini intel > > On 18 Mar 2009, at 08:56, Rakesh Singhal wrote: > >> Only 10.5.4 came with MacMini, not 10.4. I can buy DVD of 10.4 OS to >> install on it. If in general it is not possible then how to know >> that it will work on this hardware or not. I did few months back on >> one intel MacMini (which came with 10.5.1), I did partition and >> install 10.4 on one partiotion and 10.5 on the other partition. But >> I do not know detailes of that macMini. > > Apple document which versions are supported on which models. Here's > the page for Intel Macs: <http://support.apple.com/kb/HT1159> > > The hard part is working out what model machine you've got :-) That's what <http://support.apple.com/kb/HT3476> is for. _______________________________________________ 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: Install 10.4 on MacMini intel
by Chris Ridd 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 18 Mar 2009, at 08:56, Rakesh Singhal wrote: The hard part is working out what model machine you've got :-) Cheers, Chris _______________________________________________ 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… Only 10.5.4 came with MacMini, not 10.4. I can buy DVD of 10.4 OS to install on it. If in general it is not possible then how to know that it will work on this hardware or not. I did few months back on one intel MacMini (which came with 10.5.1), I did partition and install 10.4 on one partiotion and 10.5 on the other partition. But I do not know detailes of that macMini. Apple document which versions are supported on which models. Here's the page for Intel Macs: <http://support.apple.com/kb/HT1159> This email sent to site_archiver(a)lists.apple.com

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Re: Install 10.4 on MacMini intel
by Rakesh Singhal 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=e5Hmj9ozfs6R92WGRRuyx8RqYp1y9/lxVjdw+FcQe6Q=; b=u8jSTdvYwp7x3vFM3DU05qSwEl+kpvA27IWXJjq5/JdjcjHAkPQFaPPhV08CbWhmu+ 2BUxEd8Z3nnfl6+tfkQ4CjgHrtaPBiH/iM297OdWul2OTvB1oRD+AK23Rs1gopxBNuXN 7/gbolzP+RVGEGwISmIak/eCNaiBazTRTq02Q= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=FIMUqTl4PJPWDhrregCADwVCIqazeKPKeSlpX5tHHy1P5bLbYbdUvBHidvUtwcFc5b jP+m3JZLNPmnVDG6TlcY0LahC5JqlKuswHJtDxLKafE4cCVA69qZAGZQvuLwuY0MneJV 4IDFRcU6sUMv/oFK+mVkILosF/dnp4Jvaocuw= _______________________________________________ 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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Socket recv problems in real-time context : lock or priority inversion issues?
by Stéphane Letz 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Hi, 0.3% 28.9% mach_kernel recvfrom_nocancel 0.3% 27.5% mach_kernel socketpair 4.0% 24.4% mach_kernel soreceive 0.3% 10.6% mach_kernel sbwait 0.0% 10.0% mach_kernel msleep 0.0% 10.0% mach_kernel uiomove 0.0% 9.7% mach_kernel lck_mtx_sleep_deadline 0.0% 7.7% mach_kernel thread_block 0.0% 7.7% mach_kernel thread_block_reason 7.7% 7.7% mach_kernel ml_set_interrupts_enabled 0.0% 1.4% mach_kernel assert_wait_deadline 0.0% 1.4% mach_kernel wait_queues 1.4% 1.4% mach_kernel ml_set_interrupts_enabled 0.6% 0.6% mach_kernel lck_mtx_lock 0.3% 0.3% mach_kernel thread_block 0.3% 0.3% mach_kernel _mutex_assert Thanks. Stephane Letz _______________________________________________ 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 are using UDP sockets to transmit audio in real-time between 2 machines. Basically the "master" machine is synchronized on the audio interrupt and send/recv audio packets on the "slave" machine. The "slave" machine is synchronized on incoming packets (that is waiting for an incoming packet on the socket to start it's audio cycle). The "slave" machine reception thread is set-up in real-time mode (using thread_policy_set /THREAD_TIME_CONSTRAINT_POLICY kind of API). It works quite reliably until we start to load the slave machine (like starting a big compilation). In this case the RT slave thread does not "wake up" the the right time, and we have quite big latencies (up to 50 millisecond latency measured on a MacPro Intel 4 cores 10.5.6 when the audio cycle is supposed to be 5 millisecond). More precisely it seems the socket recv operation blocks a lot of time. We configure the socket with SO_SNDBUF/SO_RCVBUF and possibly SO_RCVTIMEO kind of options. The same code works without problem on Linux or Solaris. Using Shark "system trace", we were able to measure abnormal latencies on the recv function (20 ms in a given test), more precisely in the "recvfrom_nocancel" one. Using the Shark "Time profile" we see the following call stack for "recvfrom_nocancel" in the kernel: So it may be a lock or priority inversion of some functions used in kernel mode? Is this a known problem for sockets on OSX? It this trace enough to do a bug report? This email sent to site_archiver(a)lists.apple.com

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Re: Install 10.4 on MacMini intel
by Kevin Van Vechten 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ 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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Install 10.4 on MacMini intel
by Rakesh Singhal 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=jgT4yOjzUT8L9x3hOhsENbJm6R8k6A0voeNze1gJIuQ=; b=Y7yz/Lp8/fE2+XC/LSKR5lN/uaTi3Of+CZItU6L7Bji9zik5Fq5qTtlsp7VLihoxYk EzM1ctXzyN+eYMl0K7oFTTN86dqZR3MkjFVwg2b0nkW0MAWfyaBbVlHheUEm+FoGVAcF ZRiMsW2qaW9JMEouKy5Uh8+zaFtHeL7cOess0= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=Yw+6dKBhdqwiwhBbaJ1KdwbFbrF2z9GvICet+y6UjnD1Oi00++RKaVgSQp2xLVzaaU LFV7YdW2CTanjLUfzRrs5KJGSXs2IVx41/neb72HhQ9iqMv+zAf87IzzWAZtn7S4QgSg yQn/YSS1Y1cfcPUN7oDqOznhkmkKVsBAndFQo= _______________________________________________ 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: kpi vs kernel dependencies
by Duane Murphy 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 - --- At Tue, 17 Mar 2009 18:06:05 -0700, Duane Murphy wrote: > >I would like to remove the nice warning about not depending on kpi and >kernel APIs in my kext. > >Unfortunately, I depend on a class that is apparently only available in >the kernel interface. I am using IODTNVRAM (aka AppleEFINVRAM). > >Is there another interface to use to access NVRAM variables other than >this class? I see my mistake. I should not depend on this class directly, but rather the more generic interface. Sorry. ...Duane -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.9.1 (Build 287) Charset: ISO-8859-1 wsBVAwUBScBLUUrg9acQ4r2CAQjAeggA63v3regQ/RFtAVstAeIuQM/kq5e4YbL1 1xoNvoIzv2yp/kdheeabEM/0no711u9kkwSsUtqrhx9xehUJ/+gbwbblAImpaGEe P2FaT/bTXwONGVQvan9qXUj91lHn1oME1Uh7Q32DSqROEpWCH0aeyivZV7SqZA9w BdNL0TbUYyt+lchkkMUF+tPTdM4Xh7je+nF6cdgDiTRPfTa1ev2BSjmDrG4jvj6D rLsq+PSRaYwxF26IKbhgu5Tmv/ECIOYYHD/cf2wMytbpwFiClEbdfjDycXACL62a P2CPLz/CMz+mf+HKHgQN+uinzdle1rCcozbPeLWz8MQ4zFW2kZEjPw== =Nr+1 -----END PGP SIGNATURE----- _______________________________________________ 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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kpi vs kernel dependencies
by Duane Murphy 18 Mar '09

18 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I would like to remove the nice warning about not depending on kpi and kernel APIs in my kext. Unfortunately, I depend on a class that is apparently only available in the kernel interface. I am using IODTNVRAM (aka AppleEFINVRAM). Is there another interface to use to access NVRAM variables other than this class? Thanks, ...Duane -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.9.1 (Build 287) Charset: ISO-8859-1 wsBVAwUBScBJC0rg9acQ4r2CAQgU1gf/fjRxb1FG9LfRQB+FlqOM+msj1nrEWzsP 1Zzh+Dv9PgcXizRLyjYsvv4pE7wNigsWwKRhYhM33IWxsxpxhg1QbyGBhkdIclyX aD07v80ezmwXU+SpJetiSQiqPOTp0ekWtFW6yPtM3q7goEgxnHB2ZUmxYicmne77 kjiLxV0rqZZutD3j5UxkbJ3GbYp+xSO5NPja2oUefGkajkJPO4SFsxgEHg18+0hp e4oLLUUzBR0oL0xOwecRyOdWWc6Pcvp0FymGW4PqamJJU25I2XSy7x76aLLB4RaJ 0xIPNJj+RrsbUWhxTXeK43oJ6quu7C6042/byObJW9LmUcCgGon0Sw== =jNwV -----END PGP SIGNATURE----- _______________________________________________ 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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