August 2010 - Darwin-dev - lists.apple.com

Re: languagesetup - bug and questions
by Stéphane Sudre 27 Aug '10

27 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com OK, answering to myself: On Aug 27, 2010, at 4:12 PM, Stéphane Sudre wrote: That provides a way to find the Language through code. _______________________________________________ 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… o Is languagesetup part of Darwin? Considering it's looking at some resources of Installer.app (on 10.5), I guess the answer is: no. o Is it only playing with the /var/log/CDIS.custom file? Or is it changing other data? It also changes the values for the AppleLanguages key of the dictionary at /Library/Preferences/.GlobalPreferences.plist This email sent to site_archiver(a)lists.apple.com

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languagesetup - bug and questions
by Stéphane Sudre 27 Aug '10

27 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I tried to look at the man page for the languagesetup tool. Bug: ---- Illustration: http://manpagez.com/man/1/languagesetup/ Questions: ---------- _______________________________________________ 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'm trying to find a way to retrieve the setup language (the one that is used for the Login Window) from code. It was not really helpful considering this man page is a man page template. The bug was filed as Problem ID# 8363591 and occurs on Mac OS X 10.5.8, 10.6.4 and other releases. Considering this tool is referenced here: http://support.apple.com/kb/HT4102?viewlocale=en_US , it could be interesting to fix the man page. o Is languagesetup part of Darwin? I haven't found it so far on http://opensource.apple.com . o Is it only playing with the /var/log/CDIS.custom file? Or is it changing other data? This email sent to site_archiver(a)lists.apple.com

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setpgid fails with RPERM
by jonathan＠mugginsoft.com 13 Aug '10

13 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=mugginsoft.com; h=Received:Subject:Mime-Version:Content-Type:From:Resent-From:Date:Content-Transfer-Encoding:Resent-Date:Resent-To:Message-Id:To:X-Mailer:X-Identified-User; b=CQy+76dv5En6jL1zl3R4RURQBsmQxuuAkm6p8BkzJelfjUSNR7HJKFeoFBoX89zXgfYPSuLBpO/8gxrKqfkgMzdOWRd4JkhcyP2IuUlm+U7L3Rq/xav/XbWUkVCK4832; Resent-date: Fri, 13 Aug 2010 21:32:18 +0100 Resent-from: "jonathan(a)mugginsoft.com" <jonathan(a)mugginsoft.com> Resent-message-id: <20100813203251.C5BF4E66DCC0(a)relay1.apple.com> Resent-to: darwin-dev(a)lists.apple.com I want the child processes created with Cocoa's NSTask to be in the same process group as the caller. However calling setpgid() seems to fail with RPERM - operation not allowed. Is this an OS X POSIX process implementation detail or a consequence of the interior NSTask fork() implementation? Process group code: // launch the task [task launch]; pid_t group = setsid(); if (group == -1) { NSLog(@"setsid() == -1"); group = getpgrp(); } if (setpgid([task processIdentifier], group) == -1) { NSLog(@"unable to put task into same group as self: errno = %i", errno); } NSLog(@"new task process id = %i", [task processIdentifier]); NSLog(@"pgid = %i", group); Regards Jonathan Mitchell Developer Mugginsoft LLP http://www.mugginsoft.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: Running daemon in non-root account, but listening below 1024?
by Chris Suter 13 Aug '10

13 Aug '10

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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Running daemon in non-root account, but listening below 1024?
by Andre-John Mas 13 Aug '10

13 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi, I want to run a server that will listen on a port below 1024, but I do not wish it to run as root. Ideally I would create a dedicated account for this daemon and then grant it permission to listen of the specified privileged ports. Is this possible on Darwin/MacOS X? If not what alternatives can you suggest? 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… This email sent to site_archiver(a)lists.apple.com

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Re: Mach port leakage
by Nathan Herring 12 Aug '10

12 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: Acs6MijzWRUqCtEqmU2WgiuZQmpe0QAO8DsA//+PLIA= Thread-topic: Mach port leakage User-agent: Microsoft-Entourage/13.6.0.100712 The # of ports as reported by Activity Monitory increases one per call, and remains with the life of the application instance. On 8/12/10 8:30 AM, "Jean-Daniel Dupas" <devlists(a)shadowlab.org> wrote: > Le 12 août 2010 à 17:22, Nathan Herring a écrit : > >> I'm trying to track down a case where we appear to be leaking Mach ports, >> and have a repro case where if our code is called via [self >> performSelectorInBackground:@selector(myCode) withObject:nil], we appear >> (via the Activity Monitor) to leak exactly one port. This doesn't occur if >> it happens on the main thread, and it doesn't occur with other calls. :/ >> >> I've tried using Instruments and a custom DTrace command to log calls to >> mach_port_allocate(_qos|_full)?, mach_port_destroy, and mach_port_deallocate >> to see if I can figure out the culprit, but it doesn't appear to show up. >> Plus there're a bunch of calls to mach_port_deallocate that don't seem to >> have a matching allocate (which is a different problem). Am I missing some >> major mechanisms for ports to be called into existence or destroyed? > > deallocate release a reference on a send port. There is many way to get this > kind of port. You can receive it from an IPC call, create it from a receive > port or from an other send port, etcŠ > There is also a call equivalent to "retain" that increase the reference of the > port and should be balance by deallocate call. > > What do you mean by "leak" ? It creates one port each time you call the > method, or it create it once, and keep it alive for the process lifetime ? > > -- Jean-Daniel -- Nathan Herring com.microsoft.devdiv.clr.os/development _______________________________________________ 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: Mach port leakage
by Jean-Daniel Dupas 12 Aug '10

12 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 12 août 2010 à 17:22, Nathan Herring a écrit : > I'm trying to track down a case where we appear to be leaking Mach ports, > and have a repro case where if our code is called via [self > performSelectorInBackground:@selector(myCode) withObject:nil], we appear > (via the Activity Monitor) to leak exactly one port. This doesn't occur if > it happens on the main thread, and it doesn't occur with other calls. :/ > > I've tried using Instruments and a custom DTrace command to log calls to > mach_port_allocate(_qos|_full)?, mach_port_destroy, and mach_port_deallocate > to see if I can figure out the culprit, but it doesn't appear to show up. > Plus there're a bunch of calls to mach_port_deallocate that don't seem to > have a matching allocate (which is a different problem). Am I missing some > major mechanisms for ports to be called into existence or destroyed? deallocate release a reference on a send port. There is many way to get this kind of port. You can receive it from an IPC call, create it from a receive port or from an other send port, etc… There is also a call equivalent to "retain" that increase the reference of the port and should be balance by deallocate call. What do you mean by "leak" ? It creates one port each time you call the method, or it create it once, and keep it alive for the process lifetime ? -- Jean-Daniel _______________________________________________ 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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Mach port leakage
by Nathan Herring 12 Aug '10

12 Aug '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: Acs6MijzWRUqCtEqmU2WgiuZQmpe0Q== Thread-topic: Mach port leakage User-agent: Microsoft-Entourage/13.6.0.100712 I'm trying to track down a case where we appear to be leaking Mach ports, and have a repro case where if our code is called via [self performSelectorInBackground:@selector(myCode) withObject:nil], we appear (via the Activity Monitor) to leak exactly one port. This doesn't occur if it happens on the main thread, and it doesn't occur with other calls. :/ I've tried using Instruments and a custom DTrace command to log calls to mach_port_allocate(_qos|_full)?, mach_port_destroy, and mach_port_deallocate to see if I can figure out the culprit, but it doesn't appear to show up. Plus there're a bunch of calls to mach_port_deallocate that don't seem to have a matching allocate (which is a different problem). Am I missing some major mechanisms for ports to be called into existence or destroyed? Thanks in advance, nh -- Nathan Herring com.microsoft.devdiv.clr.os/development _______________________________________________ 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: A question of depth
by Travis Siegel 12 Aug '10

12 Aug '10

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… I'm not entirely why rm -R doesn't work, but I've run into this problem as well. I got around it by using a shell script that did a cd all the way to the lowest level, rm *, then cd .., and so on until it got back to the .trash folder, whereupon it exited. It took me quite a while to figure out what the problem was, because as you say, there wasn't really a suitable error message explaining what was going on. however, the shell script solved the problem nicely, and all was fine afterwords. though one time when performing an ftp mirror operation, I got a similar problem, and the only way to fix it was to mv folders to successively higher levels in the file structure until I could remove them normally, since for some reason it was throwing out an error of some sort about removing the folders that were nested too deep. Unfortunately, this was a couple years ago and I think it was under tiger, so not sure if the error still applies, or if it was just that particular ftp structure. I've not encountered it since, so really can't say. This email sent to site_archiver(a)lists.apple.com

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Re: [OT] Re: SSH is slow
by Matevž Markovič 11 Aug '10

11 Aug '10

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