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

kext Kernel Debugging
by Duane Murphy 24 Apr '07

24 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Howdy folks, I've been doing some two machine debugging of my kext. However, doing backtraces tends to be problematic as many symbols are not present. So I'm looking for some suggestions on how to see more complete backtraces. I've only been loading the symbols to my kext. Will loading all the other dependent symbols help? (I thought I tried that, but I could have been wrong.) Do I need a "debugging kernel"with symbols? Is there one available that I don't have to build myself? That I can just install and start using? For example if I call PE_enter_debugger() I get no stack trace at all. Of course I usually know from where this was called, but it would be nice to see the trace. Thanks for any tips and help, ...Duane _______________________________________________ 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: Memory allocation problem in kernel space.....
by Garth Cummings 23 Apr '07

23 Apr '07

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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Re: Memory allocation problem in kernel space.....
by Shawn Erickson 23 Apr '07

23 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Apr 22, 2007, at 10:46 PM, Gaurav Kumar wrote: I am using IOkiit framework for my driver in cpp and Mac OS 10.4.8. IOmalloc and malloc not able to allocate memory for my requirement. Anyway review... -Shawn _______________________________________________ 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 you better explain why IOMalloc or IOMallocPageable (and friends) are not able to meet your requirements? <http://developer.apple.com/documentation/Darwin/Conceptual/ KernelProgramming/vm/chapter_7_section_9.html> This email sent to site_archiver(a)lists.apple.com

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Memory allocation problem in kernel space.....
by Gaurav Kumar 23 Apr '07

23 Apr '07

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Re: Darwin-dev Digest, Vol 4, Issue 80 "Doubt on calling IFNET_INPUT"
by Mustapha parthalf Abiola 21 Apr '07

21 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:in-reply-to:references:mime-version:content-type:message-id:cc:content-transfer-encoding:from:subject:date:to:x-mailer; b=szNVilHRFys9xa4z96W3V7FlQneHeHzUIoN8CYGbHb5Zh+ogeVcqcuO8tT0a+m2r79QZEAj/ciF5/9uEc1e98zIhZiQTG799Tn6QJGzJ0Nz4tWLDHWmjxsHFjqLAuWnukWl3+xPcBkeSfJh9bPBmtPkHuVTlEdWtCtRa4RH2Syw= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:in-reply-to:references:mime-version:content-type:message-id:cc:content-transfer-encoding:from:subject:date:to:x-mailer; b=WlTImcSe2TuMbHWKUCRxxQfzECNfM06Xeq7KotsEPDfbCsMtiMYaWJvVoDZh0w++Rsna7IVvKPD9M+mjZxDx+VNc8AAMPsAR4OSlkZ4IXCg45XYk/ReDVuuezdUtrIsfimVB6vItVUUZHWwb7dztvfbw4SEDviLuD+NFOCQo6Zo= Date: Thu, 19 Apr 2007 14:52:56 +0530 From: "Anees Alappat" <aneesalappatt(a)gmail.com> Subject: Doubt on calling IFNET_INPUT To: darwin-dev(a)lists.apple.com, macnetworkprog(a)lists.apple.com Message-ID: <d235c8020704190222m74b2f4e7g11f45c75eb077077(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" The packet is then queued. Processing resumes on a different thread. This is just a excerpt of how data is received. I hope I fulfilled this request. Thanks & regards Anees You're welcome. Best regards. -------------------------- Mustapha "parthalf" Abiola parthalf(a)gmail.com abiola.m(a)aaun.edu.ng _______________________________________________ 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… Dear all, I am trying to develop a virtual interface with two ethernet cards form MACOSX 10.4.8.When I went thru the kernel interface api documentation, it is said that to get a packet from the interface ifnet_input function is to be called. This will call the ifnet_demux_func() and after that iff_input_func(). Yes. This is correct. iff_input_func is used to process packets after it is demuxed. But nowhere it is specified from which function should ifnet_input () is to be called. The hardware driver or its support code calls ifnet_input with pointers to its ifnet structure (ifnet_t) and mbuf chain (mbuf_t). The ifnet_input function calls the network interface’s ifnet_demux_func function for the interface. The demultiplexing function identifies the frame and returns a protocol_family_t value to indicate which protocol should handle the packet. The ifnet_input function calls the attached interface filters (if any) sequentially. Any packets not matching an attached protocol are dropped, as are any promiscuous packets. The ifnet_input function calls the protocol plumber’s proto_media_input function. The plumber is specific to a given protocol/interface combination. Note: The Ethernet-specific module for IP receives the frame and delivers the packet to the protocol's proto_input routine. Can anyone help me on this regard. This email sent to site_archiver(a)lists.apple.com

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Anything wrong with x86_64 and SYSV shared memory allocation?
by Kevin Murphy 20 Apr '07

20 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.10 (Windows/20070221) Anything I need to know? Thanks, Kevin Murphy _______________________________________________ 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… Whenever I try to use shmem to allocate SYSV shared memory on an XServe Quad Xeon (OS X 10.4.9, latest XCode) using the "-arch x86_64" compiler switch, I get ENOMEM returned. The same code works fine with "-arch i386" (or "-arch ppc64" on a G5). You can demonstrate the result with a SYSV shared memory demo program (google for shared-mem.c). What I'm actually trying to do is compile 64-bit PostgreSQL on an XServe Quad Xeon. It compiles fine using "-arch x86_64" in CFLAGS, but it fails its regression tests because it can't allocate memory with shmget (ENOMEM is returned). There's plenty of SYSV memory available, and the 32-bit PostgreSQL compiles and works fine. This email sent to site_archiver(a)lists.apple.com

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Re: silly launchd question
by Axel Luttgens 20 Apr '07

20 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 On 20/04/07 8:10, jmzorko(a)mac.com wrote: HTH, Axel _______________________________________________ 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… ... how do I get launchctl to load (and start) my job when the user logs in? The plist lives in the users' ~/Library/LaunchDaemons/ folder, and I tried setting RunAtLoad, but it doesn't seem to work :-( At the user's directory level, only LaunchAgents are handled by launchd (for example, see the "FILES" section at the end of launchd's man page); it is rather logical, as users aren't supposed to be able to define system wide daemons by themselves... But LaunchAgents are somewhat problematic under 10.4. You could have a look at: <http://www.omnigroup.com/mailman/archive/macosx-admin/2007-March/056006.html> to see the nature of the problem. Now, do you really need to have the job launched thru launchd? There are other possibilities, such as loginwindow's LoginHook, or even startup items as defined in the user's account. Could you tell us a bit more about what you want to achieve? This email sent to site_archiver(a)lists.apple.com

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silly launchd question
by jmzorko＠mac.com 20 Apr '07

20 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Regards, John Falling You - exploring the beauty of voice and sound http://www.fallingyou.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… ... how do I get launchctl to load (and start) my job when the user logs in? The plist lives in the users' ~/Library/LaunchDaemons/ folder, and I tried setting RunAtLoad, but it doesn't seem to work :-( This email sent to site_archiver(a)lists.apple.com

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Re: Darwin 8.9 Source Code Available
by Mo McRoberts 19 Apr '07

19 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Excellent news in getting the Darwin 8.9 release out of the door! Cheers, Mo. _______________________________________________ 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… Out of interest, are the relevant parts of Security Update 2007-004 included in the release? This email sent to site_archiver(a)lists.apple.com

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Re: Equivalent of get_random_bytes?
by Peter Lei 19 Apr '07

19 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.2) Gecko/20070221 SeaMonkey/1.1.1 Mnenhy/0.7.4.0 Just a heads up that I have previously reported a bug in read_random() as it only returns random data in the first 20 bytes of the buffer that is given when "numbytes" requested is greater than 20 bytes. At least in 10.4.x. --peter Thanks, no, read_random() is what I was looking for Alex Am 19.04.2007 um 22:11 schrieb Paul Nelson: I think this is what the poster had in mind: openssl rand -out foo.dat 1024 makes a file containing 1024 bytes You can also base64 it: openssl rand -base64 1024 | wc Also, see 'man rand' Paul Nelson Thursby Software Systems, Inc. on 4/19/07 2:45 PM, Michael Smith at msmith(a)freebsd.org wrote: is there an equivalent for Linux' get_random_bytes (1) other than reading /dev/random on darwin? If you are inside the kernel, the BSD symbolset exports read_random() in <sys/random.h>. In userspace, just read from /dev/random. = 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/nelson%40thursby.com This email sent to nelson(a)thursby.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/peter.lei%40ieee.org This email sent to peter.lei(a)ieee.org _______________________________________________ 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… Alex v. Below wrote: _______________________________________________ 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/newsletters%40vonbelow.com This email sent to newsletters(a)vonbelow.com This email sent to site_archiver(a)lists.apple.com

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