Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!sun!amdcad!mozart.amd.com!proton!tim
From: tim@proton.amd.com (Tim Olson)
Newsgroups: comp.os.minix
Subject: Re: mem_copy problem in MM
Message-ID: <1990Jun6.154011.29469@mozart.amd.com>
Date: 6 Jun 90 15:40:11 GMT
References: <21169@nigel.udel.EDU>
Sender: usenet@mozart.amd.com (Usenet News)
Reply-To: tim@amd.com (Tim Olson)
Organization: Advanced Micro Devices, Inc., Austin, Texas
Lines: 17

In article <21169@nigel.udel.EDU> minixug!root@nluug.nl (The Master) writes:
| Now, I add a system call with format m1, which has a
| pointer to a similar structure in user space.  The
| ptr is in m1_p1.
|
| Now, when I call this system call with the function:
| I get the result "-1", and perror() says "Invalid argument" .

All of your code looks correct.  However, one possibility is that you
didn't correctly add the new system call number to the call_vec table
in table.c.  If it somehow still points to no_sys (the default for all
unimplemented call numbers), then you will end up at the no_sys
function in utility.c which (surprise!) returns EINVAL.

	-- Tim Olson
	Advanced Micro Devices
	(tim@amd.com)