Unfortunately, though, the server is a BSD process and is written to
be cross-platform. So, I think adding these notifications might make
for too many platform-specific changes. I'm also not the server
author, so although I can request changes it's generally easier for
me to be able to do things without changing it.
launchd's SIGTERM at logout is perfect because the server handles it,
so really what I need to know is:
1) When the user of my preferences pane changes the little popup from
"launch server manually" to "launch server when I log in", I want my
prefs pane to write out the appropriate plist file in ~/Library/
LaunchAgents, then "nudge" launchd to let it know to go ahead and
load this "job".
2) When the user sets the menu to "launch server manually", can I
configure launchd so that launch is manual, but quit is automatic at
logout.
Thanks again,
--Mike
On Jun 8, 2006, at 2:23 PM, Rosyna wrote:
Ack, at 6/8/06, Mike Kobb said:
1) Is it possible to set up launchd to not launch the process at
login, but to shut it down at logout?
It may not be necessary. See http://developer.apple.com/qa/qa2001/
qa1133.html for some notifications you can subscribe to that are
sent when a user logs out. Granted, the samples are really, really
old (in the lifetime of OS X) but they should still be accurate.
2) I want this all to be controlled by my preference pane.
Obviously, it's no trouble to get it to write out the required
plist file, but the part I'm not sure about is how to do the
equivalent of a "launchctl load" or "launchctl unload" operation.
I could exec this, I guess, but I prefer to use a proper C API
rather than the exec mechanism whenever I can.
Again, notifications are sexy. If you can reload the preferences
and handle the changes without a relaunch, you can just send a
notification from the preference pane and receive them in the
daemon. This is what I do and it works really well.
--
Sincerely,
Rosyna Keller
Technical Support/Holy Knight/Always needs a hug
Unsanity: Unsane Tools for Insanely Great People
It's either this, or imagining Phil Schiller in a thong.
--
"In your dreams, you're weightless." -- Astronaut Ed Lu, describing
sleeping aboard the International Space Station.
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