August 2010 - launchd-dev - lists.macosforge.org

Launchd user agent with StartInterval preventing sleep
by Gabriel Gilder 31 Aug '10

31 Aug '10

Hi all, First off I apologize if this is a dumb question or I'm missing something obvious... I'm setting up a Ruby script to run via launchd at a given interval. Ideally I'd like to have it run every 15 minutes or so, so I've set StartInterval in the plist to 900. The problem I'm running into is that, if my computer is set to a delay of longer than 15 minutes before going to sleep, the script will prevent it from sleeping. I guess every time it runs it resets the sleep delay, so sleep is never triggered. Does anyone have a suggestion for preventing this behavior? Is there some way I can make my script's activities not reset the sleep delay timer? My script runs some SVN commands, generates some logs, and displays Growl notifications. Is any of that inherently going to reset the sleep delay timer? Thanks for your time... -Gabriel

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TXT Record for Bonjour
by Thomas Bartelmess 30 Aug '10

30 Aug '10

Hi, is there a way to add a Bonjour TXT record to a deamon that gets announced with launchd? Thanks Thomas

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Respawn if job SucessfulExit=false but when started by StartCalendarInterval condition instead of RunAtLoad
by Roger 29 Aug '10

29 Aug '10

Hi! Why does KeepAlive with SuccessfulExit imply RunAtLoad by default, instead of getting the exit status from the job runned by StartCalendarInterval? I'm asking because I want to schedule a job on weekdays around 6:00 pm, and if my script exit unsuccessfully (or successful; it doesn't matter), I want launched to retry every 30 minutes until script exits successfully, or until next time in StartCalendarInterval. Or does it already work but with some other property? TiA Roger Excerption of my schedule: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> [ … ] <key>KeepAlive</key> <dict> <key>SuccessfulExit</key> <false/> </dict> <key>RunAtLoad</key> <false/> <key>StartCalendarInterval</key> <array> <dict> <key>Hour</key> <integer>18</integer> <key>Minute</key> <integer>00</integer> <key>Weekday</key> <integer>1</integer> </dict> <dict> <key>Hour</key> <integer>18</integer> <key>Minute</key> <integer>00</integer> <key>Weekday</key> <integer>2</integer> </dict> <dict> <key>Hour</key> <integer>18</integer> <key>Minute</key> <integer>00</integer> <key>Weekday</key> <integer>3</integer> </dict> <dict> <key>Hour</key> <integer>18</integer> <key>Minute</key> <integer>00</integer> <key>Weekday</key> <integer>4</integer> </dict> <dict> <key>Hour</key> <integer>18</integer> <key>Minute</key> <integer>00</integer> <key>Weekday</key> <integer>5</integer> </dict> </array> <key>ThrottleInterval</key> <integer>1800</integer> </dict> </plist>

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LAUNCH_KEY_GETJOB returns MACH_PORT_NULL?
by Dave MacLachlan 27 Aug '10

27 Aug '10

Hey all.. So when I send a LAUNCH_KEY_CHECKIN message, I get a dictionary back with all the mach ports filled in for my mach services. However, if I send a LAUNCH_KEY_GETJOB from an external process I get MACH_PORT_NULL for all of the mach ports. I can look them up by using bootstrap_look_up, or NSMachBootstrapServer, but I was wondering what the reasoning was behind not returning them from a LAUNCH_KEY_GETJOB lookup? It appears to be an intentional design decision. (This is what I'm seeing on 10.5 at least. Perhaps it's different on 10.6?) Cheers, Dave

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launch_msg("CheckIn") IPC failure: Operation not permitted
by Thomas Bartelmess 27 Aug '10

27 Aug '10

Hi everyone, I am trying to check in a daemon, with liblaunch. But I am always getting a IPC failure. For now I just tried the samplecode in sampled.c It's just creating a launch_data_t wiht launch_data_new_string(LAUNCH_KEY_CHECKIN); and tries to get a response (launch_msg(msg))) but that returns a NULL and no response. Could somebody give me a hint how to do that. Thanks Thomas

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Launch Agent and per-user launchd not exiting on logout (10.5.8)
by Sidney San Martín 26 Aug '10

26 Aug '10

I ran into a machine running OS 10.5.8 recently where our launchd agent and the user's launchd did not terminate at logout. On the next login, an "Already loaded" message was logged for our plist, followed by a number of errors from the agent itself. A snippet of the log is below. After killing and relaunching the agent it was fine for that session. After rebooting the machine, I was unable to reproduce the problem. I remember happening in 10.4, but never in 10.5... Are there any circumstances that'd cause launchd to misbehave like this? Is there anything I should be doing to handle the situation more gracefully in my agent? 6/18/10 4:15:41 PM com.apple.launchctl.Aqua[957] com.mycompany.agent: Already loaded 6/18/10 3:54:47 PM MyCompany Agent[616] _NXPlaceWindow: error setting window shape (268435459) 6/18/10 3:54:47 PM MyCompany Agent[616] _NSShapePlainWindow: error setting window shape (268435459) 6/18/10 3:54:47 PM MyCompany Agent[616] _NSShapePlainWindow: error setting window shape (268435459) 6/18/10 3:54:47 PM MyCompany Agent[616] CGSLookupServerPort: _CGSSessionDeathWatchPort(gSessionPort) returns 268435459 6/18/10 3:54:47 PM com.mycompany.agent[616] Fri Jun 18 15:54:47 Terminal-1.local MyCompany Agent[616] <Warning>: CGSLookupServerPort: _CGSSessionDeathWatchPort(gSessionPort) returns 268435459 6/18/10 3:54:47 PM MyCompany Agent[616] CGSShutdownServerConnections: Detaching application from window server 6/18/10 3:54:47 PM com.mycompany.agent[616] Fri Jun 18 15:54:47 Terminal-1.local MyCompany Agent[616] <Warning>: CGSShutdownServerConnections: Detaching application from window server 6/18/10 3:54:47 PM MyCompany Agent[616] CGSDisplayServerShutdown: Detaching display subsystem from window server 6/18/10 3:54:47 PM com.mycompany.agent[616] Fri Jun 18 15:54:47 Terminal-1.local MyCompany Agent[616] <Warning>: CGSDisplayServerShutdown: Detaching display subsystem from window server 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 6/18/10 3:54:59 PM com.mycompany.agent[616] Fri Jun 18 15:54:59 Terminal-1.local MyCompany Agent[616] <Error>: kCGErrorCannotComplete : CGSDeviceSynchronize: Invalid device window 6/18/10 3:54:59 PM MyCompany Agent[616] kCGErrorCannotComplete : CGSDeviceSynchronize: Invalid device window 6/18/10 4:13:52 PM /Library/Application Support/MyCompany/MyCompany Agent.app/Contents/MacOS/MyCompany Agent[861] SessionGetInfo(0xb33e40) -> -2147417855 6/18/10 4:13:52 PM /Library/Application Support/MyCompany/MyCompany Agent.app/Contents/MacOS/MyCompany Agent[861] SessionGetInfo(0xb33e40) -> -2147417855 6/18/10 4:14:32 PM /Library/Application Support/MyCompany/MyCompany Agent.app/Contents/MacOS/MyCompany Agent[865] SessionGetInfo(0xb33e40) -> -2147417855 6/18/10 4:14:32 PM /Library/Application Support/MyCompany/MyCompany Agent.app/Contents/MacOS/MyCompany Agent[865] SessionGetInfo(0xb33e40) -> -2147417855 6/18/10 4:14:42 PM /Library/Application Support/MyCompany/MyCompany Agent.app/Contents/MacOS/MyCompany Agent[868] SessionGetInfo(0xb33e40) -> -2147417855

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bootstrap_create_service is only allowed against legacy Mach jobs
by Dave MacLachlan 25 Aug '10

25 Aug '10

I'm playing with some example code from Mac OS X Internals, and I'm getting: 2010-08-25 12:06:53 PM com.apple.launchd[497] (0x10f7c0.simple_ipc_serve[1322]) bootstrap_create_service() is only allowed against legacy Mach jobs: com.osxbook.FactorialServer I took a quick look through the sources and it appears the only way to get a "legacy" job is to have job_new_via_mach_init called in launchd_core_logic.c.... interestingly nothing seems to call it. Is there anyway to get this running on 10.5 the way that Amit originally coded it, or does bootstrap_create_service just not work anymore? This is purely for learning... not shipping this. (Note this is 10.5 I'm running on right now). Cheers, Dave

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LaunchAgents
by Peter 24 Aug '10

24 Aug '10

Hi all, Is there a simple way to prevent the user from unloading the launch agent by opening the terminal and using the launchctl unload command? My user agent is loaded when the user logs in and unloaded when the user logs out. I set the flag to keep alive in case the user kills/terminates the process in order to reload but this doesn't prevent him/her from using the launchctl unload command. Thanks, Peter

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Code sign verification in Leopard
by Arun 23 Aug '10

23 Aug '10

Hi All, I am using Mac OS X 10.5.8 and xcode v3.1. I have created a Self Code signing identity using Keychain Access application. The name of the Code signing identity is "arun". Using this identity i have signed a binary using the below command. codesign -s arun -r="designated => anchor trusted" -f arun To verify the code sign i am using the following command which throws the error as highlighted below. codesign -v -R="anchor trusted" arun arun: does not satisfy its designated Requirement *test-requirement: failed to satisfy code requirement(s)* arun:~ arun$ Can anyone help me in identifying what i am passing wrong in verifying the codesign? Thanks Arun KA

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inetdCompatibility
by Dreamcat4 23 Aug '10

23 Aug '10

Hi, 1. There is this patch on the Apple Support forums. Are exporting those environment variables the right way to pass the remote ip information to the spawned process? http://discussions.apple.com/thread.jspa?messageID=9360848&tstart=0 2. (unrelated to the above patch) Im having trouble with getting the inetdCompatibility feature to work. The popular example /System/Library/LaunchDaemons/ssh.plist Which was followed for nginx pretty much verbatem: http://gist.github.com/534777 Regardless, Launchd isn't starting nginx when a connection is made to http://localhost:8080. The 'http-alt' service is specified in "/etc/services" to point to 8080. So as far as I can see, this should be no different to Launchd than for triggering a start of sshd. The behaviour is confounding as Apple sshd will work just fine. Flicking inetdCompatibility to Wait => true has no effect either. Nothing. dreamcat4 dreamcat4(a)gmail.com

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