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

Re: SQLite on Tiger - THREADSAFE on or off ?
by Chris Hanson 06 Mar '06

06 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 4, 2006, at 4:42 PM, Mark Gilbert wrote: I am using LibSQLite3.0.dylib in a multi thread app. SQLite on Tiger is built with --enable-threadsafe. -- 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… I have encountered problems where access to the database from a second thread is showing the database as locked. Are you trying to use the same database handle in multiple threads? SQLite doesn't support doing so. Using SQLite via per-thread database handles should work. After some research it would appear that libsqlite must be compiled with the THREADSAFE flag set to 1 in order to support multithread access. It also implied that UNIX distributions may have this set to 0 by default. This email sent to site_archiver(a)lists.apple.com

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Re: Universal binaries and X11
by Cyrus Harmon 06 Mar '06

06 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Cyrus _______________________________________________ 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… 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. Not that this has anything to do with X11, of course. On Mar 3, 2006, at 11:13 AM, Ernest Prabhakar wrote: As was pointed out earlier, it is trivial to compile UNIX libraries and command-line tools as Universal, so everything "should" work. If it is open source, the best solution is to simply compile it Universal (or at least Intel-native). Unless it has a really hairy build system (e.g., like KDE or OpenOffice), it shouldn't be that hard. ;If you get stuck, ask here if its X11, or on unix-porting If it is not open source, first check to make sure you know that it runs properly on PowerPC machines. Pretty much the only common software that won't run under Rosetta are a) emultators (e.g., Virtual PC) and JNI-bridged hybrid Java apps (e.g., NeoOffice) -- pure Java, of course, runs fine unless it explicitly requires JDK 1.3. This email sent to site_archiver(a)lists.apple.com

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Re: Compiling darwin/xnu/bsd/hfs
by André-John Mas 06 Mar '06

06 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Let us know if this helps: On 5-Mar-06, at 20:17 , Raneil Ensomo wrote: And so I thought I might need to debug the HFS plus code to better understand the problem. Thanks, Raneil -----Original Message----- From: Mike Smith [mailto:msmith@freebsd.org] Sent: Saturday, March 04, 2006 4:27 AM To: darwin-dev(a)lists.apple.com Cc: Raneil Ensomo Subject: Re: Compiling darwin/xnu/bsd/hfs On Mar 3, 2006, at 11:11 AM, darwin-dev-request(a)lists.apple.com wrote: I am a complete newbie on this one, so I hope you could bear with me. This is my first time to lay hold on anything related to MAC OS... All I need to do is to debug through the darwin's hfs code. (i.e. when I insert an HFS-Plus-formatted CD, i want to debug through the hfs code to better see how it works). You will find this virtually impossible, as a newcomer to the Darwin world. What I did was I downloaded the files found in http://gobsd.com/code/darwin/xnu/bsd/hfs/. I didn't download any other files (is this ok?). Nobody is going to be angry at you for doing that, if that's what you mean. I would like to ask how I could compile this in Xcode. (i.e. do I just add the files in a new XCode project, etc. etc.) You can't compile it into anything useful with Xcode. I'm sorry if this seems so elementary to you. I had been searching through the internet, but I haven't found the solution yet (most probably because I don't know exactly what to search for). If you were to explain why you think you need to "debug through the HFS code" we might be able to give you some better advice. Things are much more complex than I think you think they are. = 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/ajmas%40sympatico.ca _______________________________________________ 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… http://developer.apple.com/documentation/Porting/Conceptual/ PortingUnix/distributing/chapter_9_section_4.html We're making a tool that accepts a folder path, and copies all the files in the path to an HFS-Plus formatted disc image (is there already a sample code that does this?). We then wrote the disc image to a disc, and tried opening it in MAC pc. Right now, it can only open up to 2 "levels" (i.e. until root\folder1\folder2). My teammate has been trying to solve this for a month now. This email sent to ajmas(a)sympatico.ca This email sent to site_archiver(a)lists.apple.com

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RE: Compiling darwin/xnu/bsd/hfs
by Raneil Ensomo 06 Mar '06

06 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com We're making a tool that accepts a folder path, and copies all the files in the path to an HFS-Plus formatted disc image (is there already a sample code that does this?). We then wrote the disc image to a disc, and tried opening it in MAC pc. Right now, it can only open up to 2 "levels" (i.e. until root\folder1\folder2). My teammate has been trying to solve this for a month now. And so I thought I might need to debug the HFS plus code to better understand the problem. Thanks, Raneil -----Original Message----- From: Mike Smith [mailto:msmith@freebsd.org] Sent: Saturday, March 04, 2006 4:27 AM To: darwin-dev(a)lists.apple.com Cc: Raneil Ensomo Subject: Re: Compiling darwin/xnu/bsd/hfs On Mar 3, 2006, at 11:11 AM, darwin-dev-request(a)lists.apple.com wrote: > I am a complete newbie on this one, so I hope you could bear with > me. This > is my first time to lay hold on anything related to MAC OS... > > All I need to do is to debug through the darwin's hfs code. (i.e. > when I > insert an HFS-Plus-formatted CD, i want to debug through the hfs > code to > better see how it works). You will find this virtually impossible, as a newcomer to the Darwin world. > What I did was I downloaded the files found in > http://gobsd.com/code/darwin/xnu/bsd/hfs/. I didn't download any > other > files (is this ok?). Nobody is going to be angry at you for doing that, if that's what you mean. > I would like to ask how I could compile this in Xcode. (i.e. do I > just add > the files in a new XCode project, etc. etc.) You can't compile it into anything useful with Xcode. > I'm sorry if this seems so elementary to you. I had been searching > through > the internet, but I haven't found the solution yet (most probably > because I > don't know exactly what to search for). If you were to explain why you think you need to "debug through the HFS code" we might be able to give you some better advice. Things are much more complex than I think you think they are. = 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… This email sent to site_archiver(a)lists.apple.com

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Re: missing task_name_t
by stephen joseph butler 05 Mar '06

05 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:in-reply-to:mime-version:content-type:references; b=Wufwm/SmwuEIobKkGIY0JTR3QiVDApSfnGBm/p0RdAGsgdHRQowyWuAUO4w+PsrxOmDqwS8p8LhWLULostYO6im3Hace36bBffjlE5o2bjYJZg2s+Y57EDm/ytiU+ssa56+lU+3fjjzLEil0bknEf2kCXFfuL2367Si34hb1Sec= _______________________________________________ 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 8A428.plist.diff DS.diff

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Re: Why no work on rsync?
by Mike Smith 05 Mar '06

05 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Am 05.03.2006 um 00:13 schrieb Jordan K. Hubbard: 1. That the source and the target for any operation may or may not support EAs, yet heterogeneous operations can't lose data. 2. That creating, editing, renaming, copying and deleting files all need to be able to keep data and metadata together, fully cognizant of the limitations posed by item #1. Maybe there's a way to handle this at the file system level, even for file systems not traditionally supporting EAs. EAs are/can be a thing of the file system driver, even if you store files/metadata in a way readable by a driver not supporting metadata. To take an example on UFS: Creating a file on a Macintosh would create a "file" entry and a "._file" entry as necessary. Not at the system API level, but at the file system level. The file system would hide "._file" on the Mac, making UFS appearing as EA supporting file system. No tool would ever get the idea to do something nasty with this "._file" pseudo-file as it's transparent to the API level. This is implemented, but not currently enabled for UFS. Mounting the same file system on a Linux/BSD/whatever OS would make "._file" appear as a completely separate file from "file", fully native to that other OS. Disadvantages: - File listings of the same volume on different OSs show a different number of files. - File archiving (tar etc.) and custom copy protocols (rsync etc.) would still have to handle EAs themselves when copying to/from non- Mac OSs. This is the "hard work" to which Jordan alludes, and a good deal of the work has been done. Advantages: - There's no need to tweak the basic CLI tools as all file systems appear as supporting EAs on the Mac. This is a remarkably nontrivial problem when you are not guaranteed for example the ordering of incoming ._ files, or even that they still map to the other files you are receiving. Other tools that manipulate files within the system domain still have to be modified; tools like cp, mv, and any application that makes backup or autosave files must learn to manage EAs and ACLs. - Mapping for network file systems can be done at the network file system driver level, so NFS etc. would still appear as supporting EAs on the Mac, not supporting EAs on other OSs. = 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… On Sun, 5 Mar 2006 11:42:51 +0100, Markus Hitter <mah(a)jump-ing.de> wrote: This is how Mac OS currently handles the situation for filesystems which inherently cannot support EAs. The ._ files are generated and managed by the VFS, but they have the same format so that if the volume is subsequently moved to a platform which is ignorant of them and they are then exported by either a filesystem (e.g. NFS) or application (e.g. rsync) they can be detected and managed accordingly. On the contrary, there is substantial work that has to be replicated so that tools that serialise the filesystem format (tar, cpio, pax, rsync, scp, zip, unzip, ftp, tftp, etc. etc.) can handle the production and consumption of ._ files. The approach taken is actually more modular than this. VFS plugins are only required to know anything about EAs and ACLs if their particular filesystem supports them in some fashion. Ignorant filesystems can simply set a bit indicating that administratively EAs or extended security is desired and the VFS will handle the details transparently. This email sent to site_archiver(a)lists.apple.com

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Re: missing task_name_t
by Jason Townsend 05 Mar '06

05 Mar '06

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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Making use of the Apple Remote
by André-John Mas 05 Mar '06

05 Mar '06

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Hi, 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/site_archiver%40lists.app… 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. This email sent to site_archiver(a)lists.apple.com

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Re: Why no work on rsync?
by Markus Hitter 05 Mar '06

05 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Am 05.03.2006 um 00:13 schrieb Jordan K. Hubbard: To take an example on UFS: Disadvantages: Advantages: Markus - - - - - - - - - - - - - - - - - - - Dipl. Ing. Markus Hitter http://www.jump-ing.de/ _______________________________________________ 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… 1. That the source and the target for any operation may or may not support EAs, yet heterogeneous operations can't lose data. 2. That creating, editing, renaming, copying and deleting files all need to be able to keep data and metadata together, fully cognizant of the limitations posed by item #1. Maybe there's a way to handle this at the file system level, even for file systems not traditionally supporting EAs. EAs are/can be a thing of the file system driver, even if you store files/metadata in a way readable by a driver not supporting metadata. Creating a file on a Macintosh would create a "file" entry and a "._file" entry as necessary. Not at the system API level, but at the file system level. The file system would hide "._file" on the Mac, making UFS appearing as EA supporting file system. No tool would ever get the idea to do something nasty with this "._file" pseudo-file as it's transparent to the API level. Mounting the same file system on a Linux/BSD/whatever OS would make "._file" appear as a completely separate file from "file", fully native to that other OS. - File listings of the same volume on different OSs show a different number of files. - File archiving (tar etc.) and custom copy protocols (rsync etc.) would still have to handle EAs themselves when copying to/from non- Mac OSs. - There's no need to tweak the basic CLI tools as all file systems appear as supporting EAs on the Mac. - Mapping for network file systems can be done at the network file system driver level, so NFS etc. would still appear as supporting EAs on the Mac, not supporting EAs on other OSs. This email sent to site_archiver(a)lists.apple.com

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Re: missing task_name_t
by stephen joseph butler 05 Mar '06

05 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:in-reply-to:mime-version:content-type:references; b=S6M6UkkCyhpYMAEXLl1zWqavZ5LVuYLRbhdYvUY2LojrIU5eNh6LizlrOyW8hfn4jKlWD9AgRCxiQTfmyECgTlIfU1nMG9EA1dv5/3Yhh2Dz6ScItWKkUNTdPRMOPO2JFWkyGGbNoQzDFKgR5MWIppOvW+naYgSQSpKXe3OzpHs= _______________________________________________ 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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