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

Launch a user-process from daemon
by Rakesh Singhal 14 Jan '09

14 Jan '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:date:from:to :subject:mime-version:content-type:content-transfer-encoding :content-disposition; bh=vkwpT2wGBWWSmLfF/Y2A4lIJR3zivF/L8wqVH7Nzyuk=; b=RWe+CoeAt3zhTmylaDIp2dvprw5uGVMy2dITN7/8IPQzyKaM8AT4SifuH6pr522kG+ y17bX1NdSWtH85SqQ1BjRNpLrZ0/pULtHbFig4e7l2du76ERr5fWxNW1Sg7WIL/KhXEz MFQqax4OEPSidn9LKx+mF4SQsZvV2AqQkc34M= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type :content-transfer-encoding:content-disposition; b=UgnvryHijwyMgZfPQNIubl29/L69WsDvaaZ+Qj+2hBaer4vjuX2p4Hqo7gilDfkkY9 7FHVRyp0rtuoPSJLKJYgMWXjXVCcpgj76tJHShm8UUtSEF6qZ9WlEA9np5ypb5hzd+Ti 6xZCS64lvR+xVlb3tH4nPSyOgDw2ns6EcMId8= Hi all I want to launch a user-process (GUI) from a daemon. The plist file for daemon is kept in LaunchDaemons folder. I can not put it in LaunchAgents folder, cause I want only one daemon fro all logins. Please advice me. Regards rksinghal _______________________________________________ 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: Descriptor Passing Mac OS X 10.5.4 ( X86_64 )
by Terry Lambert 14 Jan '09

14 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Sorry, no information that I can give you. -- Terry Thanks. Terry Lambert wrote: <http://developer.apple.com/qa/qa2007/qa1541.html> (first result from a google 'msg_control descriptor macos x' query). -- Terry Thanks. Rohitash -- Rohitash Panda | Database Platform Specific Development Server Technologies _______________________________________________ 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/tlambert%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… On Jan 13, 2009, at 2:07 AM, Rohitash wrote: Terry, I had seen the post earlier , and was hoping if someone who had used Unix domain sockets on this version of the OS , could give some insights on issues faced. The descriptor passing seems to fail in 64-bit mode , with sendmsg returning EINVAL when using CMSG_* macros to populate the message header structure . There seems to be a portability issue here.I see that you discussed a similar issue earlier inhttp://lists.apple.com/archives/Darwin-dev/2008/Feb/msg00033.html . Can you please let me know the version in which the patch would be available ? PS : We could have a w/a , but I wouldn't want to make any changes in my portable code. On Jan 7, 2009, at 6:42 AM, Rohitash <rohitash.panda(a)oracle.com> wrote: Hi, I needed some info regrading descriptor passing using Unix Domain Sockets. Do we support the use of the new member "msg_control" of the msghdr struct , instead of the older "accrights" ? <green-for-email-sig_0.gif> Oracle is committed to developing practices and products that help protect the environment This email sent to tlambert(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Descriptor Passing Mac OS X 10.5.4 ( X86_64 )
by Rohitash 13 Jan '09

13 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Organization: Oracle Corporation User-agent: Thunderbird 2.0.0.19 (Windows/20081209) _______________________________________________ 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: Stop and start daemon
by Rakesh Singhal 13 Jan '09

13 Jan '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:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=l+YvSimAPntD0nzX7nq6XzLVNXinhsk7omQm6jhGDE4=; b=EGZD/CvaFo8L8+rXVnHlF/qQLkFqtiL5okNg9fpbpmQjHQJBsFspGvnbzByOs5J5UX 6KN6msXvv+77xX8kEUv2ED4Q41Rd5r94KjdVWPTHymrYBPSu2iH7tRzrnoXF4Plj4VQa S+z5JqTvfCKGOh3lpB5HRNBJlkd6pJQuQZXOc= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=CJH4t7zp7eadHgNYiKkPkh9OEi2FLwXxkLkcatpnrTz6uuOHgBjP6ns6otgnJpJsmS osm3gILwMWzhn8ddMoeL4V8bm9aiZKDHuLqH0C8r465eOiS+Nua1LOMGwyJqxtj3GCIq fHH+IkOFeiGKJMPNK3hM+BIGT+oOX80SF55bY= Thanks. I would like to know one more thing that I do not want to create more one instance of my daemon but I can create more than one. So how to prevent to create more than one instance. Is it possible to have only one instance for all users? If yes then how. Regards On Mon, Jan 12, 2009 at 7:59 PM, Jason Coco <jason.coco(a)gmail.com> wrote: > > On Jan 12, 2009, at 08:55 , Rakesh Singhal wrote: > >> Hi Jason, >> >> Thanks but I knew this thing. Is there any other way to do the same >> thing only on the basis of name of daemon application. >> >> I think we can not do even by using StartupItems. > > Using the dot notation for your daemon is just the suggested form (although > it's suggested for a good reason). You can use whatever label you wish. Just > make the label in the plist the same as the name of the daemon and then you > can start and stop it using just the daemon's name. > > launchctl start mydaemon > launchctl stop mydaemon > > That's basically the way it's done. If you want to give users something else > to start and stop the daemon, you can create a simple script that calls > launchctl. For example: > > #!/bin/bash > > case "$1" in > > start) > /bin/launchctl start com.mycompany.mydaemon.daemon # use whatever label > is in the plist > ;; > > stop) > /bin/launchctl stop com.mycompany.mydaemon.daemon > ;; > > restart) > /bin/launchctl stop com.mycompany.mydaemon.daemon > ;; > > status) > if (/bin/launchctl list | grep com.mycompany.mydaemon.daemon >/dev/null); > then > echo Daemon is running > else > echo Daemon is not running > fi > ;; > > *) > echo "Usage $0 { stop|start|restart|status } > exit 1 > > esac > > You can also write an application which uses the launchd api to > programatically start and stop the daemon. This way you could write a little > gui app to control it or a system panel to toggle it on or off. If you wish > to do it this way, see the API in /usr/include/launch.h > > HTH, Jason > _______________________________________________ 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: CF Lite (CF-476.17) for Mac OS 10.5.6 Released
by Jean-Daniel Dupas 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 12 janv. 09 à 23:24, William Siegrist a écrit : http://www.opensource.apple.com/darwinsource/10.5.6/ Thank you for the notification :-) _______________________________________________ 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… CF Lite has been released for Mac OS 10.5.6. You can find it at the usual location: This email sent to site_archiver(a)lists.apple.com

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CF Lite (CF-476.17) for Mac OS 10.5.6 Released
by William Siegrist 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com http://www.opensource.apple.com/darwinsource/10.5.6/ Thank you -- William Siegrist Darwin Team _______________________________________________ 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 CF Lite has been released for Mac OS 10.5.6. You can find it at the usual location: smime.p7s

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Re: [ANN]Yet another CFLite
by Jean-Daniel Dupas 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com http://sourceforge.net/forum/forum.php?forum_id=891282 Le 12 janv. 09 à 22:25, David M. Cotter a écrit : this project seems to be gone. but i've got one for ya that won't go away: http://karaoke.kjams.com/wiki/Code/CFLite On Nov 23, 2008, at 7:24 AM, Jean-Daniel Dupas wrote: Hello, http://code.google.com/p/cf-lite _______________________________________________ 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… He moved for licence issue (google code does not allow APSL) but it's still alive. I'm not the author of this project, but it may interest everybody that would like to use CF based application on other plateforms (It already compile fine on Windows). « This project attempts to consolidate the work of anyone interested in using the Apple Core Foundation libraries outside of the Mac OS X environment. This project builds on the various open source releases of CFLite, as well as work from the DarwinBuild, PureDarwin, and other locations The hope is that this will become a central source for Core Foundation work outside of the Macintosh, and that there will be free transmission of patches back upstream.» This email sent to site_archiver(a)lists.apple.com

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Re: [ANN]Yet another CFLite
by David M. Cotter 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com this project seems to be gone. but i've got one for ya that won't go away: http://karaoke.kjams.com/wiki/Code/CFLite On Nov 23, 2008, at 7:24 AM, Jean-Daniel Dupas wrote: Hello, http://code.google.com/p/cf-lite _______________________________________________ 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 the author of this project, but it may interest everybody that would like to use CF based application on other plateforms (It already compile fine on Windows). « This project attempts to consolidate the work of anyone interested in using the Apple Core Foundation libraries outside of the Mac OS X environment. This project builds on the various open source releases of CFLite, as well as work from the DarwinBuild, PureDarwin, and other locations The hope is that this will become a central source for Core Foundation work outside of the Macintosh, and that there will be free transmission of patches back upstream.» This email sent to site_archiver(a)lists.apple.com

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Re: task_for_pid never returns KERN_SUCCESS, any ideas?
by Jean-Daniel Dupas 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 12 janv. 09 à 20:23, Gary Fung a écrit : Le 12 janv. 09 à 19:37, Gary Fung a écrit : Jason Coco wrote: On Jan 12, 2009, at 12:54 , Gary Fung wrote: Tried to retrieve task_info_t by using task_for_pid but the following code does not equate to true Jason It returns 5 for all pids, which is a KERN_FAILURE correct? This doesn't provide much information at all. It only returns KERN_SUCCESS for the running process itself. I thought you have permission to retrieve task_info for other processes under the same user? It was until Mac OS 10.4 Intel version and Mac OS 10.5 for PPC and Intel (IIRC) Is there an easier way to retrieve the memory usage of a process? Retrieving the pid and process name was not this difficult. I think you can get some value about memory usage usign sysctl to retreive the distant kproc_info struct. _______________________________________________ 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… Jean-Daniel Dupas wrote: task_t task = MACH_PORT_NULL; struct task_basic_info tinf; if(task_for_pid(mach_task_self(), pid, &task) == KERN_SUCCESS) { ... //not reached } mach_task_self returns non null value so that should be ok. But task_for_pid does not return anything for &task. Any ideas? I've iterated through all the pids currently running, same result. Ran it on Leopard. task_for_pid() requires special privileges to execute. Instead of testing for KERN_SUCCESS in the future, I suggest using a variable to test, then you can see exactly what failed (in this case, you will not have privileges to execute it). The easiest way to deal with this (although, probably not the best way) is to execute the application as root. You can see the man page for taskgated(8) for more information on task_for_pid() and its security issues. Did I miss something obvious? I only found p_comm (name) and pid. But I'm not familiar with kproc_info at all, so maybe some hints on how to retrieve memory usage? Sorry for the typo, I mean kinfo_proc (see man sysctlbyname). But after a check, I didn't find a memory usage field in the struct. So that is probably a wrong way. This email sent to site_archiver(a)lists.apple.com

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Re: task_for_pid never returns KERN_SUCCESS, any ideas?
by Gary Fung 12 Jan '09

12 Jan '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 2.0.0.19 (Windows/20081209) Le 12 janv. 09 à 19:37, Gary Fung a écrit : Jason Coco wrote: On Jan 12, 2009, at 12:54 , Gary Fung wrote: Tried to retrieve task_info_t by using task_for_pid but the following code does not equate to true task_t task = MACH_PORT_NULL; struct task_basic_info tinf; if(task_for_pid(mach_task_self(), pid, &task) == KERN_SUCCESS) { ... //not reached } mach_task_self returns non null value so that should be ok. But task_for_pid does not return anything for &task. Any ideas? I've iterated through all the pids currently running, same result. Ran it on Leopard. task_for_pid() requires special privileges to execute. Instead of testing for KERN_SUCCESS in the future, I suggest using a variable to test, then you can see exactly what failed (in this case, you will not have privileges to execute it). The easiest way to deal with this (although, probably not the best way) is to execute the application as root. You can see the man page for taskgated(8) for more information on task_for_pid() and its security issues. Jason It returns 5 for all pids, which is a KERN_FAILURE correct? This doesn't provide much information at all. It only returns KERN_SUCCESS for the running process itself. I thought you have permission to retrieve task_info for other processes under the same user? It was until Mac OS 10.4 Intel version and Mac OS 10.5 for PPC and Intel (IIRC) Is there an easier way to retrieve the memory usage of a process? Retrieving the pid and process name was not this difficult. I think you can get some value about memory usage usign sysctl to retreive the distant kproc_info struct. _______________________________________________ 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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