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

Re: pipes, scripts, and launchd
by Dave Zarzycki 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 29, 2007, at 5:52 AM, Perry Smith wrote: On Dec 29, 2007, at 1:16 AM, Dave Zarzycki wrote: On Dec 28, 2007, at 6:31 PM, Perry Smith wrote: davez _______________________________________________ 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… Another related question: I saw one example launchd.plist file that had two stanzas in it. Would that work? Two stanzas? Can you given an example? Non-working example of what I'm talking about. That is not even a valid property list. One can verify this by trying to open the file via Property List Editor.app. If you can come up with a property list that can be verified by Property List Editor.app, I'd be intrigued to see it. This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Andrew James 29 Dec '07

29 Dec '07

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:cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; bh=wO7RV0Lq4IOJy4jpi4A2NuWm4Ih7gYBAVabErR/J9xo=; b=OVs16CpiXYGrfvWRREXV5bec5qian8hQoBbG20C90+y12hfIb0wDrivjqvx10iCjYnRKFCcv5Zo0mTonxxqkff2SgO7uM4ugK3NbLVnyW16HFwhh7As8CKQsLtRvIiy+a5OJluennd3QSYYXpTJtGBITOSxehL0NNX/VfmqjFV4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; b=yFQ6cO4yzUOdPPD4loZDdBxBXYG5MFFK3SPTzbussc53ufYmiActdYkwXLwDfJXkvKPoDo3gzmqK8ua9byGTKzqWCVhGQjSlF8BbQAqL80ij0oZfcbdarDcvniDHJtie6/RMJgkeP0blBiT0ecaliXSldsekZYuWMgGSonfd5PA= On 30/12/2007, at 12:44 AM, Brian Bergstrand wrote: On Dec 29, 2007, at 1:35 PM, Andrew James wrote: Hi, #import <IOKit/IOMessage.h> #import <IOKit/pwr_mgt/IOPMLib.h> static io_connect_t powerPort = (io_connect_t)0; static void iokpm_callback (void *, io_service_t, natural_t, void*); case kIOMessageCanSystemPowerOff: if (dontIdleSleep) { IOCancelPowerChange(powerPort, (long)arg); } else IOAllowPowerChange(powerPort, (long)arg); break; default: break; } } Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 _______________________________________________ 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… Sorry i forgot to mention i am working from within a kext here, will i still be able to use that code or is there another way that will let me fulfill my original request since i am coding in a kext How do i cancel a sleep event from happening, along with things like the lid closing and causing a sleep. _______________________________________________ You can only cancel idle sleep, not user initiated sleep (via the power button, the Sleep menu, or closing the lid. int main(int argc, char* argv[]) { IONotificationPortRef portRef; io_object_t notifier; CFRunLoopSourceRef source; powerPort = IORegisterForSystemPower (NULL, &portRef, iokpm_callback, &notifier); if (powerPort) { source = IONotificationPortGetRunLoopSource(portRef); CFRunLoopAddSource([[NSRunLoop currentRunLoop] getCFRunLoop], source, kCFRunLoopCommonModes); } [[NSRunLoop currentRunLoop] run]; } static void iokpm_callback (void *myData, io_service_t service, natural_t message, void *arg) { switch(message) { // must always respond to the power state change messages case kIOMessageSystemWillSleep: case kIOMessageCanSystemSleep: // we can't prevent user initiated power off, only idle power off case kIOMessageSystemWillPowerOff: case kIOMessageSystemWillRestart: IOAllowPowerChange(powerPort, (long)arg); break; This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Brian Bergstrand 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 29, 2007, at 1:35 PM, Andrew James wrote: Hi, #import <IOKit/IOMessage.h> #import <IOKit/pwr_mgt/IOPMLib.h> static io_connect_t powerPort = (io_connect_t)0; static void iokpm_callback (void *, io_service_t, natural_t, void*); case kIOMessageCanSystemPowerOff: if (dontIdleSleep) { IOCancelPowerChange(powerPort, (long)arg); } else IOAllowPowerChange(powerPort, (long)arg); break; default: break; } } Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 _______________________________________________ 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 cancel a sleep event from happening, along with things like the lid closing and causing a sleep. _______________________________________________ You can only cancel idle sleep, not user initiated sleep (via the power button, the Sleep menu, or closing the lid. int main(int argc, char* argv[]) { IONotificationPortRef portRef; io_object_t notifier; CFRunLoopSourceRef source; powerPort = IORegisterForSystemPower (NULL, &portRef, iokpm_callback, &notifier); if (powerPort) { source = IONotificationPortGetRunLoopSource(portRef); CFRunLoopAddSource([[NSRunLoop currentRunLoop] getCFRunLoop], source, kCFRunLoopCommonModes); } [[NSRunLoop currentRunLoop] run]; } static void iokpm_callback (void *myData, io_service_t service, natural_t message, void *arg) { switch(message) { // must always respond to the power state change messages case kIOMessageSystemWillSleep: case kIOMessageCanSystemSleep: // we can't prevent user initiated power off, only idle power off case kIOMessageSystemWillPowerOff: case kIOMessageSystemWillRestart: IOAllowPowerChange(powerPort, (long)arg); break; This email sent to site_archiver(a)lists.apple.com

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Re: pipes, scripts, and launchd
by Perry Smith 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 29, 2007, at 1:16 AM, Dave Zarzycki wrote: On Dec 28, 2007, at 6:31 PM, Perry Smith 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/site_archiver%40lists.app… Another related question: I saw one example launchd.plist file that had two stanzas in it. Would that work? Two stanzas? Can you given an example? Non-working example of what I'm talking about. Two <dict> entries in the same file -- just to keep them together since they logically belong together. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd "> <plist version="1.0"> <dict> <key>Label</key> <string>org.postgresql.postgres</string> <key>ProgramArguments</key> <array> <string>/usr/local/pgsql/bin/postgres</string> <string>-D</string> <string>/usr/local/pgsql/data</string> </array> <key>UserName</key> <string>postgres</string> <key>GroupName</key> <string>postgres</string> <key>StandardErrorPath</key> <string>/path/to/fifo</string> <key>OnDemand</key> <false/> </dict> <dict> <key>Label</key> <string>org.postgresql.rotatelogs</string> <key>ProgramArguments</key> <array> <string>/path/to/rotatelogs/script</string> </array> <key>UserName</key> <string>postgres</string> <key>GroupName</key> <string>postgres</string> <key>OnDemand</key> <false/> </dict> </plist> This email sent to site_archiver(a)lists.apple.com

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Cancel Sleep
by Andrew James 29 Dec '07

29 Dec '07

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:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; bh=g5C5u0NxK93iCrbTkux8TXMIMbIgjZdzZVM9qQohUqk=; b=gBGBkRkyuKwHh+5LkePm1OkJESNRVxy8V76AulTJ0EJTJsgyn6cT8daB3Xsbxc4SyA7o+H/awgwEkzeIwtifXMMGSSZp1ymuKerfmaSopasq1HOjkZe4QFELGI4ls1m+0hyUCMLPfB1T2V55960Qdm2u+TvJSqY9WqdjK8s469o= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; b=U+E71rLBxjOHmxD2WHGziWitCPUA1tyviSMlUcA5OVC3SRBusAmeySF6FpK/OtGfBM+mh2TQOZpwICGGQ9I2wz0tTcaW6qfhYDmt2F1RiKdntie7E/va9bPTSpfRQDRW4f4uSUpAA0NkcDI1x4NB+KQW2NQKre0XTRsOb0QATOE= Hi, How do i cancel a sleep event from happening, along with things like the lid closing and causing a sleep. _______________________________________________ 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: pipes, scripts, and launchd
by Dave Zarzycki 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 28, 2007, at 6:31 PM, Perry Smith wrote: Two stanzas? Can you given an example? davez _______________________________________________ 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… Another related question: I saw one example launchd.plist file that had two stanzas in it. Would that work? This email sent to site_archiver(a)lists.apple.com

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Re: pipes, scripts, and launchd
by Dave Zarzycki 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 28, 2007, at 6:20 PM, Perry Smith wrote: man launchd.plist Search for: ExitTimeOut _______________________________________________ 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… launchd uses SIGTERM to signal the process should gracefully shutdown. Then launchd does a SIGKILL when it gets impatient. This email sent to site_archiver(a)lists.apple.com

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Re: How can I get the maximum shared memory segment size in program?
by Justin C. Walker 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 28, 2007, at 21:34 , bady yu wrote: By the way, my system is Leopard. Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for the Absorption of Federal Funds -------- Men are from Earth. Women are from Earth. Deal with it. -------- _______________________________________________ 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 can use "sysctl kern.sysv.shmmax" or "ipcs -M" to get the integer (4194304). But they are both command line tools. It is not convenient to call it inside the problem. I also have tried to use the sysctlbyname system call: sysctlbyname ("kern.sysv.shmmax", &shmmax, &len, NULL, NULL). Although this call return 0, the shmmax variable does not hold the correct value. Can anybody tell me an appropriate way? Thank you in advance! 'sysctl(1)' just uses 'sysctl(2)'. Check the man page ("man 2 sysctl") and the source for 'sysctl(1)' available on Apple's Darwin website (the 'system_cmds-431' project, for 10.5). This email sent to site_archiver(a)lists.apple.com

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How can I get the maximum shared memory segment size in program?
by bady yu 29 Dec '07

29 Dec '07

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:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; bh=ETbZTDNwx79GTsop+Mev4tiBrZ16mK7lf6rxFcMTzfc=; b=FvO5hlqXOFG7JnG9H147olXXzpXf6k5vWsU9A07z0kt5LUdQ3Q8tKpz9rNKdIE32iUIq3O8XwLXkaCW7CWGhVCL3PNPhu9ObOO6JKX9Mkf4Uq/n3sNXuTMGoNpW1T5pZwdEj4o++0aD2hGLk2AD0NpABFJjKvXpIexjhnhL4H+8= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding:mime-version:subject:date:x-mailer; b=Q4Et0fw/7aW9gavm7aAfH8tcoX1KQRoesKOmuhRlMfFVhd/MVMTSuNRXb9uJ7lOTbBABCohF7ZNVPuuf+t7282Olp0mJQDdU+1bSjQuxMAEOYCCz14SKGSRGV32ZI8E2fKDa/r0RW1AFa7t7GlsYM6ciSguPuyuDxFLg3Qr4djY= By the way, my system is Leopard. Can anybody tell me an appropriate way? Thank you in advance! _______________________________________________ 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 can use "sysctl kern.sysv.shmmax" or "ipcs -M" to get the integer(4194304). But they are both command line tools. It is not convenient to call it inside the problem. I also have tried to use the sysctlbyname system call: sysctlbyname("kern.sysv.shmmax", &shmmax, &len, NULL, NULL). Although this call return 0, the shmmax variable does not hold the correct value. This email sent to site_archiver(a)lists.apple.com

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Re: pipes, scripts, and launchd
by Perry Smith 29 Dec '07

29 Dec '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com (There seems to be a lot of mis-information about launchd files.) Thank you for the suggestion, pedz On Dec 28, 2007, at 5:25 PM, Dave Zarzycki wrote: I haven't tested this, but I suspect it should work... Setup: mkfifo /var/postgres_pipe Job 1: Job 2: davez On Dec 28, 2007, at 8:44 AM, Perry Smith wrote: postgres <args> | rotatelogs <args> Anyone have any suggestions of how to do this? Thank you, pedz _______________________________________________ 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 been dinking with Unix since '82 but I've never played with named pipes. I wrote a couple test scripts today and I think I can get that to work. Another related question: I saw one example launchd.plist file that had two stanzas in it. Would that work? Have postgres write to /var/postgres_pipe via the launchd plist StandardOutPath and StandardErrorPath keys. #!/bin/sh exec rotatelogs < /var/postgres_pipe # Note to self: It would have been nice if launchd supported a StandardInputPath configuration option I may be making too big a deal of all this but I can't figure out how to do something like: from launchd. If I put that command in a simple bash shell script, I *believe* it will not work. The signal will go to bash and bash will not pass it along to the children. I could trap the signal and pass it along myself... but, $! gives the pid for the last process in the pipe (rotatelogs). That is not what I need to signal. I need the signal passed to postgres. And, in fact, it would be nice if the signal did NOT pass to rotatelogs. I'd like for it to stop when its input closes and not before then. I'm going to look in to using ksh and maybe using co-processes with ksh. bash does not seem to have that concept. But, it just seems like it should not be this hard to do. _______________________________________________ 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/zarzycki %40apple.com This email sent to zarzycki(a)apple.com This email sent to site_archiver(a)lists.apple.com

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