October 2016 - launchd-dev - lists.macosforge.org

Penalty box property?
by Nick Zolotko 28 Oct '16

28 Oct '16

Hello All, I have a launchd system service, that will stop running at seemingly odd times. The service just launches a bash script to rsync files over the network. However the launchd service will stop launching and gives me different error codes. However I can’t find any information on the launchd property of "penalty box”. Does anyone know what that does or means? When the service fails it always seems to have the state of spawning... Stderr does not produce anything. The script lives on the network and will run successfully most of the time. Once the launchd gets in this state it just fails unless I bootout/bootstrap the plist again. Any suggestions? Here is some more information. root# launchctl print system/com.laika.localsync com.laika.localsync = { active count = 0 path = /Library/LaunchDaemons/com.laika.localsync.plist state = spawning minimum runtime = 10 exit timeout = 5 nice = 20 runs = 1 successive crashes = 0 excessive crashing = 0 last exit code = 78: EX_CONFIG properties = { penalty box = 1 } root# launchctl list com.laika.localsync "LastExitStatus" = 19968; Nick Zolotko Desktop System Administrator

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Re: [launchd-dev] Replacements for deprecated SMJobSubmit and SMJobRemove
by Graham Miln 21 Oct '16

21 Oct '16

Thank you Joe. I appreciate knowing to avoid shelling out to launchctl. Kind regards, Graham

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Re: [launchd-dev] Replacements for deprecated SMJobSubmit and SMJobRemove for plugins
by Dave MacLachlan 19 Oct '16

19 Oct '16

Change of subject so I don't threadjack, but related... Is there a good way for a plugin to start up an xpc job? Before you say "why isn't your plugin an xpc job", it's something I want to launch from a XCTest bundle to monitor my test externally. Cheers, Dave On Tue, Oct 18, 2016 at 10:26 AM, Joe Auricchio <jauricchio(a)apple.com> wrote: > Hi Graham, > > Please *do not* shell out to launchctl. It's better to keep using the > deprecated SM functions than to run launchctl. Sorry, but replacements are > not yet available. > > There isn't presently API for a system-wide LaunchDaemon to open a Mach > IPC or XPC connection to a LaunchAgent, which I'd guess is closer to what > you'd really like to do? This would be a good enhancement request, please > file one! Radars from developers are always good ammunition for trying to > schedule our development time. (Coincidentally, now is a very good time for > this particular API request.) > > Another approach is for the LaunchAgents to add a LaunchEvent (man > xpc_events) for a notifyd (man notify_post) notification. When the daemon > wishes for an agent to start, it will post a notification; the LaunchEvent > will start agents (in all the running graphical user sessions) in response > to the notification; the agents will all check in with the daemon over MIG > or XPC when their xpc_event handler fires; and the daemon will ask the > appropriate agent to launch a process in the graphical user session. > Combined with Pressured Exit aka idle-exit aka Sudden Termination, this > would allow your agents to run only when they are needed without worrying > about loading/removing their plists. > > > On Oct 18, 2016, at 08:32, Graham Miln <graham.miln(a)gmail.com> wrote: > > > > In macOS 10.12's ServiceManagement/ServiceManagement.h the following > functions are marked as deprecated since macOS 10.10: > > > > - SMJobSubmit > > - SMJobRemove > > - SMCopyAllJobDictionaries > > > > The header mentions replacements will be provided by libxpc. Are > replacements available or on the way? > > > > I have a system wide daemon that would like to programmatically launch a > process in a graphical user session. At the moment, our LaunchAgents > managed helper process is always running. Ideally, it would be good to > launch and exit the helper on-demand. > > > > I believe this can now be done with `launchctl bootstrap|bootout > gui/<uid>` on the command line. Should the daemon call out to the launchctl > tool? > > > > Kind regards, > > > > Graham > > _______________________________________________ > > launchd-dev mailing list > > launchd-dev(a)lists.macosforge.org > > https://lists.macosforge.org/mailman/listinfo/launchd-dev > > _______________________________________________ > launchd-dev mailing list > launchd-dev(a)lists.macosforge.org > https://lists.macosforge.org/mailman/listinfo/launchd-dev >

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Replacements for deprecated SMJobSubmit and SMJobRemove
by Graham Miln 18 Oct '16

18 Oct '16

In macOS 10.12's ServiceManagement/ServiceManagement.h the following functions are marked as deprecated since macOS 10.10: - SMJobSubmit - SMJobRemove - SMCopyAllJobDictionaries The header mentions replacements will be provided by libxpc. Are replacements available or on the way? I have a system wide daemon that would like to programmatically launch a process in a graphical user session. At the moment, our LaunchAgents managed helper process is always running. Ideally, it would be good to launch and exit the helper on-demand. I believe this can now be done with `launchctl bootstrap|bootout gui/<uid>` on the command line. Should the daemon call out to the launchctl tool? Kind regards, Graham

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