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From: umueller@iiic.ethz.ch (Urban Dominik Mueller)
Newsgroups: comp.sys.amiga.programmer
Subject: How to start INTERNAL residents
Keywords: execute, system
Message-ID: <24675@neptune.inf.ethz.ch>
Date: 13 Feb 91 13:07:51 GMT
References: <1991Feb4.171549.28531@nntp-server.caltech.edu> <Jay.9138@deepthot.UUCP> <1991Feb6.190231.1116@jato.jpl.nasa.gov>
Sender: news@neptune.inf.ethz.ch
Reply-To: umueller@iiic.ethz.ch (Urban Mueller)
Followup-To: comp.sys.amiga.programmer
Organization: Departement Informatik, ETH, Zurich
Lines: 15

I am currently upgrading the Dillon CShell and have a specific problem under
Kickstart 2.0. I'd like to start the internal residents (like the Path
command) from within my C program. So far the Shell used SyncRun(), but
as everybody knows, it only searches the Arp resident list. First I tried
to use System() for the job, but as this function creates a new process,
commands like CD and PATH won't work. Then I switched to (thanks, Matt)
FindSegment() plus RunCommand() plus SyncRunc(). This works fine for normal
residents (those made resident using the CLI Resident command) but the
INTERNAL residents will show a strange behaviour (of course they need a
separate FindSegment()). Once or twice they work, but after that they
ignore the command line arguments and read their arguments from stdin!
So anybody who's into the specialties of SYSTEM internals please email
me a working source or ask for my faulty version. I'll post the results
here.
       -Urban   (umueller@iiic.eth.ch)