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Re: Launchd API documentation
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Re: Launchd API documentation


  • Subject: Re: Launchd API documentation
  • From: Quinn <email@hidden>
  • Date: Wed, 17 Oct 2007 10:01:20 +0100

At 12:49 -0700 16/10/07, Todd Heberlein wrote:
Is there *any* documentation for the launchd APIs?

Not yet. APIs at this level are typically documented in man pages, and there is no <x-man-page://3/launch>. This is being tracked as <rdar://problem/3886256>.


There is, however, reasonably good sample code showing how to create a launchd-aware daemon (URL below), and there's more to come soon.

<http://developer.apple.com/samplecode/SampleD/index.html>

The reason I ask is that I wrote a simple network service written in C++ that reads in input from cin, writes the information back out cout, and appends the same information in a file. It makes no assumptions about how it is started (i.e., via command line or as a network service). Everything works fine.

It sounds like your service will be running in inetd-compatibility mode (that is, you have the "inetdCompatibility" property in your launchd property list), which means you shouldn't have to use the APIs in "launch.h" at all.


BUT when I added a getauid() or setauid() to get/set Audit IDs I get very strange results. I need to figure out if I am doing something wrong by *not* calling the launchd APIs, or is there something wrong with the audit APIs.

I don't think the API-level documentation you'd get from a "launch.h" man page will help you with subtle problems like this. You might try posting to the launchd-dev mailing list.


<http://lists.macosforge.org/mailman/listinfo/launchd-dev>

S+E
--
Quinn "The Eskimo!"                    <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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References: 
 >Launchd API documentation (From: Todd Heberlein <email@hidden>)

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