[Info-vax] Request description of UFS for VMS person

[Bob Eager]

On Thu, 30 Apr 2009 17:36:52 UTC, AEF <spamsink2001 at yahoo.com> wrote:

> On Apr 29, 10:30 pm, glen herrmannsfeldt <g... at ugcs.caltech.edu>
> wrote:
> > AEF <spamsink2... at yahoo.com> wrote:
> > > How? And it's still not a file.
> >
> > In unix everything is a file.
> >
> > You can open /dev/mem and read main memory from the beginning
> > to the end.  You say memory isn't a file, but unix disagrees.
> 
> How do I read an inode, or a super block. How do I even *find* either
> of them?
> 
> Please don't tell me I can write a utility. I could write an OS too.

That wasn't the original question, which was how could one read a data 
structure that wasn't represented as a file. You can't read a file 
header directly in VMS directly; you have to write a program to read 
INDEXF.SYS. If you want the bitmap, you open BITMAP.SYS. You need a 
utility to make sense of it in either case. The low level access is 
what's important, and VMS provides that by making these things files.

In UNIX, they're all in one file. Documentation tells you where. There 
is little difference.

-- 
Bob Eager