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From: peterc@softway.sw.oz.au (Peter Chubb)
Newsgroups: comp.os.minix
Subject: Strange behaviour of mkfs in Amiga Minix
Message-ID: <4641@softway.sw.oz.au>
Date: 10 Feb 91 23:44:33 GMT
Organization: Softway Pty Ltd, Sydney, Australia
Lines: 43


 I obtained Amiga Minix last week from Prentice-Hall in Australia.
 After fixing minor problems with the boot disc (the copy of minix.img
 had a bad sector, so I used minix.img.bu), I wanted to create some
 file systems.  I used messyfmt from the MSH1.30 product to format 720K
 9 sector discs for MS-DOS, then rebooted with minix.

 mkfs /dev/dd1 720

 seemed to access drive 1, then complained that it couldn't access
 sector 719.

 I tried another disc, and this time mkfs dumped core.  I looked at the
 mkfs binary, and it was truncated to around 11k.  Restored  a much
 larger mkfs from the backup, then tried again -- similar behaviour.

 OK, thought I, I'll recompiled mkfs, and put some instrumentation in
 to see what's going on.  Needed a new empty filesystem to do this, of
 course -- rebooted Amigados, used diskcopy and msh to copy one of the
 source disks, rebooted minix, mounted the copy, rm -r *, then go
 through the palaver necessary to extract the mkfs source from the
 archive, and start compiling.  No go.  Syntax errors galore.

 Turns out that NAME_MAX is only defined if _POSIX_SOURCE is defined.
 Try again., with _POSIX_SOURCE defined.  This time, the compiled
 complains about a perfectly innocent sizeof (*sup) on or near line
 290.  Replaced this with sizeof (struct super_block) (or whatever --
 can't remember exactly here), and all compiled cleanly, to exhibit the
 same behaviour as the original binary.

 Also, there are several things commented out with
 #if (MACHINE == ATARI)
 that I think perhaps should include AMIGA, etc, too.

 Can anyone help me?  Is there something wrong with the floppy device,
 or something?  Has mkfs never been compiled on an Amiga?

 Yours in anticipation, 
				- Peter Chubb

Softway Pty Ltd, P.O. Box 305, Strawberry Hills, NSW 2012, AUSTRALIA
Phone: +61 2 698 2322;       Fax: +61 2 699 9174;     Telex: AA27987
Internet: peterc@softway.oz.au	   UUCP: ...!uunet!softway.oz!peterc