Re: Ada and Hardware

["Tarjei T. Jensen" <tarjei.jensen@kvaerner.com>]

chris.danx wrote :
>I don't understand FAT12 yet, and it complicates the boot sector.  Also the
fs
>can be messed with if it's a fat12 disk easily.  I don't want this.  Would
you
>want any person coming along and swapping a driver file for another that's
got a
>similar signiture but does malicious things behind the scenes?  What's more
>anyone can come along and delete a critical file easy.  Two clicks and OS
is
>gone.

That situation is no worse than anything else that boots from a standard
msdos floppy. If I thought it would be a problem II would  make he file(s)
invisible (system).

>I know how to boot from a floppy for the file system i'm using.  It's
really
>easy (just look in 2nd inode to get address of primary kernel file, and
>calculate offset).  I just need to get the files from my FAT hard disk to
my BFS
>floppy.  The current driver implements a disk as a file on a HD, and it's
really
>easy to work with.  The problem is i need to create a bfs enabled disk,
write
>files to it, read info from it, via an interactive shell.  I don't know how
to
>do this in Ada (i can do the shell though).  I do know how in C.

If you know how to do it in C, you know how to do it in Ada.

greetings,