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

Re: Why no work on rsync?
by Andrew White 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 0.9 (Macintosh/20041103) Peter Seebach wrote: Me, I just wish the people at Apple, way back when, had just made resource files be a Kind Of File, rather than introduced forks; sooooo much time has gone into "and then on a Mac, sometimes there's more than one file with a single name, so no existing API can read files portably". This fundamentally misrepresents the situation. -- Andrew White -------------------------------------------------------------------------- This email and any attachments may be confidential. They may contain legally privileged information or copyright material. You should not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages. We do not accept liability in connection with computer virus, data corruption, delay, interruption, unauthorised access or unauthorised amendment. This notice should not be removed. _______________________________________________ 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… Even on Unix, a file is not a single entity. A file is an inode, plus a collection of additional file system blocks that get aggregated by the OS into a single file abstraction. Similarly, a Unix file has more than one logical part. You have the file contents and the file metadata (accessed via fstat). The same is true of resource forks. It's not "two files", it's one file with two (3 including system metadata) logical parts: one structured and one unstructured. The problem isn't the model, the problem is that it doesn't map well to Unix where a file is assumed to have one unstructured part only. It's a bit like complaining that car designers are stupid because cars are too wide for cycleways. This email sent to site_archiver(a)lists.apple.com

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Re: Why no work on rsync?
by seebs＠plethora.net 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com In message <a06010203c033b52d6276(a)[192.168.0.222]>, Peter Bierman writes: >Not everyone agrees... > >http://lwn.net/2000/0817/a/lt-fork.php3 > >Sadly, in more than 5 years, not much has happened with his request... It's neat in theory, but fundamentally, "multiple files with the same name" breaks assumptions in a huge amount of code. I've seen more OS X bugs to do with resource fork handling *just in OS X* than I've seen filesystem bugs in every other UNIX I've used, put together. Me, I just wish the people at Apple, way back when, had just made resource files be a Kind Of File, rather than introduced forks; sooooo much time has gone into "and then on a Mac, sometimes there's more than one file with a single name, so no existing API can read files portably". -s _______________________________________________ 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: Why no work on rsync?
by Peter Bierman 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I have a hard time imagining anyone but Apple ever caring about resource forks. The inconsistency with the fundamental UNIX file model is simply too great. Not everyone agrees... http://lwn.net/2000/0817/a/lt-fork.php3 Sadly, in more than 5 years, not much has happened with his request... -pmb _______________________________________________ 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… At 7:18 AM -0600 3/4/06, Peter Seebach wrote: In message <1B305C63-31A8-4AF8-87A8-DA62443D5399(a)doit.wisc.edu>, Dave Schroeder writes: And have these changes been submitted back to the rsync maintainers? Or are they really not interested in this? (And I'm really genuinely curious when I ask this...) This email sent to site_archiver(a)lists.apple.com

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Re: Booting from a source build
by Shantonu Sen 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Shantonu On Mar 7, 2006, at 7:32 AM, Graham J Lee wrote: Hi, Cheers, _______________________________________________ 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… Any Darwin 8.x BootX should be able to boot any Darwin 8.y kernel for x!=y (and x==y). because "it ought to be possible", I wanted to boot my G4 PowerMac from a filesystem built entirely with open source components from darwinsource. This works (well, it doesn't, the kernel panics straightaway. But I know how to fix that), although because I hadn't realised how to configure the secondary bootloader (read: hadn't RTFM in the bless project), initially copied /System/Library/ CoreServices/BootX from a working OS X installation. This worked, although the OS X and the Darwin were different minor versions. I've since generated a new BootX from the usr/standalone/ppc/ bootx.bootinfo on the Darwin disk. So, the question would be: how different would two Darwins have to be before the secondary bootloader on one won't bootstrap the other; or could a BootX generated from bootx.bootinfo on *any* Darwin boot any Darwin (or even any old mach_o-shaped kernel with the correct jumping-on point)? Graham. -- Graham Lee UNIX Systems Manager, Oxford Physics Practical Course http://users.ox.ac.uk/~wadh1342 _______________________________________________ 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/ssen% 40opendarwin.org This email sent to ssen(a)opendarwin.org This email sent to site_archiver(a)lists.apple.com

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Booting from a source build
by Graham J Lee 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5 (Macintosh/20051201) Hi, Cheers, Graham. -- Graham Lee UNIX Systems Manager, Oxford Physics Practical Course http://users.ox.ac.uk/~wadh1342 _______________________________________________ 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… because "it ought to be possible", I wanted to boot my G4 PowerMac from a filesystem built entirely with open source components from darwinsource. This works (well, it doesn't, the kernel panics straightaway. But I know how to fix that), although because I hadn't realised how to configure the secondary bootloader (read: hadn't RTFM in the bless project), initially copied /System/Library/CoreServices/BootX from a working OS X installation. This worked, although the OS X and the Darwin were different minor versions. I've since generated a new BootX from the usr/standalone/ppc/bootx.bootinfo on the Darwin disk. So, the question would be: how different would two Darwins have to be before the secondary bootloader on one won't bootstrap the other; or could a BootX generated from bootx.bootinfo on *any* Darwin boot any Darwin (or even any old mach_o-shaped kernel with the correct jumping-on point)? This email sent to site_archiver(a)lists.apple.com

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Re: A float point arithmetic in kernel extension
by Graham J Lee 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5 (Macintosh/20051201) I am building one kernel extension for my device and I need do some float point arithmetic. The problem is, In my code, I have added header file #include <math.h> Cheers, Graham. [*]TS 1000, transatlantic brethren (and sistren) -- Graham Lee UNIX Systems Manager, Oxford Physics Practical Course http://users.ox.ac.uk/~wadh1342 _______________________________________________ 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 7/3/06 05:53, wlq wrote: And I have called some float point function pow(float, float), acos(float) etc. Actually, pow() and acos() take double arguments, though there are float equivalents. How precise and over how much of a range do you need your results? You could get away with fixed-point arithmetic or a lookup table in some circumstances (though don't wire down a 250MB lookup table; I'm speaking as a Spectrum[*] programmer :-). You don't need even 'float'-level precision for some tasks. This email sent to site_archiver(a)lists.apple.com

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Re: rsync
by Markus Weissmann 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Importance: Normal User-agent: SquirrelMail/1.4.6 Hi Robert, On Tue, March 7, 2006 10:40, Robert McAlpine wrote: > > I've just been hit by the (i guess) problem in rsync with deletion > while syncing my darwinports tree. > I think it was mentioned a few days ago. I've lost some mail since > then. Were there any developments, patches? > > ... > > rsync: delete_one: unlink "/opt/local/var/db/dports/sources/ > rsync.rsync.darwinports.org_dpupdate_dports/devel/gpgme/files/patch- > configure" failed: Directory not empty (66) > > sent 12033 bytes received 349615 bytes 24941.24 bytes/sec > total size is 11769349 speedup is 32.54 > rsync error: some files could not be transferred (code 23) at / > SourceCache/rsync/rsync-23/rsync/main.c(1161) > DEBUG: sync failed doing rsync > while executing > "dportsync" > Error: /opt/local/bin/port: port sync failed: sync failed doing rsync > You can fix this problem by just installing 'rsync' from darwinports; this way you do not need to rely on the buggy version from Apple. -Markus --- http://www.mweissmann.de/ http://www.opendarwin.org/~mww/ _______________________________________________ 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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rsync
by Robert McAlpine 07 Mar '06

07 Mar '06

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Hi, ... ... Regards Robert _______________________________________________ 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've just been hit by the (i guess) problem in rsync with deletion while syncing my darwinports tree. I think it was mentioned a few days ago. I've lost some mail since then. Were there any developments, patches? rsync: delete_one: unlink "/opt/local/var/db/dports/sources/ rsync.rsync.darwinports.org_dpupdate_dports/devel/gpgme/files/patch- configure" failed: Directory not empty (66) sent 12033 bytes received 349615 bytes 24941.24 bytes/sec total size is 11769349 speedup is 32.54 rsync error: some files could not be transferred (code 23) at / SourceCache/rsync/rsync-23/rsync/main.c(1161) DEBUG: sync failed doing rsync while executing "dportsync" Error: /opt/local/bin/port: port sync failed: sync failed doing rsync This email sent to site_archiver(a)lists.apple.com

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Re: Making use of the Apple Remote
by Dan Bernstein 06 Mar '06

06 Mar '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:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=dfxFEZcZ4jBUxvqBW5WwjB8jeLAwwggZzU2v9ZgYIoGt6a6TYov7lY3ODTpB9yvs0DYcrD9yK39RE85OiMgDBs4e5h0K5VD67H7Fc2eJzpyDHjQpkA+aksVLo128K19GJSf2XFMqCzorIr49zDbl3N75qNf18lZU33aYOq/udSU= http://www.osxbook.com/software/iremoted/ has some information On 3/5/06, André-John Mas <ajmas(a)sympatico.ca> wrote: > Hi, > > Does anyone know how the Apple Remote Control interacts with the > system? I am wanting to see if it could be used for any X11 > applications. > > Andre > _______________________________________________ > 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/dan.bernstein%40gmail.com > > This email sent to dan.bernstein(a)gmail.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: Universal binaries and X11
by Brian Bechtel 06 Mar '06

06 Mar '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:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=kIsI516f2aa/o2VsGmdY7xs1PfQ/mJo/7pF1GJF5CnctOoRf/zHhMef8T7dPMZJqsOmdlPi7Ymr2KX4yonYVniABuQymqqfTwSlSAEHXp9WtxVZCh1ABbIvzZRw1MmitTKqs3KO1Iu0kSripAtnMcmEhgQCTdr4zH+iXnmB4A8M= On 3/5/06, Cyrus Harmon <ch-darwin(a)bobobeach.com> wrote: > > It's also rumored that software that expects to handle Unix signals > gets bogus signal contexts under Rosetta, so if your software expects > to setup signal handlers and get access to registers and what not > from a signal context this won't work. I don't know about "rumored"; <http://developer.apple.com/documentation/MacOSX/Conceptual/universal_binary…> says: >Rosetta does not support precise exceptions. >Any application that relies on register states >being accurate in exception handlers or signal >handlers will not function properly running with >Rosetta. which sounds pretty definitive to me. > Not that this has anything to do with X11, of course. Yes. _______________________________________________ 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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