Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!ames!ucsd!ucsbcsl!doner
From: doner@hub.ucsb.edu (John Doner)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Locking executable resources
Summary: INIT 31 should lock INIT resources
Keywords: lock init executable patch
Message-ID: <1591@hub.ucsb.edu>
Date: 4 May 89 00:35:09 GMT
References: <4170@druco.ATT.COM>
Reply-To: doner@hub.UUCP (John Doner)
Distribution: comp
Organization: University of California, Santa Barbara
Lines: 14

In article <4170@druco.ATT.COM> jon@druco.ATT.COM (GotowJK) writes:
>The segment loader locks CODE resources into memory before it jumps to 
>them.  Why are other executable resources (particularly INIT & cdev) 
>not automatically locked?  Sure, you can set the "locked" bit on the 
>resource so it loads as a locked handle, but should that really be 
>necessary?  Why not make it automatic?  
>
I disassembled INIT 31, and sure enough, it JSR's to INIT resources
immediately after reading them in and without locking them.  Looks
like a bug to me.  I would think that *any* executed block should
be locked before being jumped to.

John Doner
doner@hub.ucsb.edu