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Date:      Fri, 19 Mar 1999 20:55:43 +0100
From:      Roelof Osinga <roelof@eboa.com>
To:        Greg Lehey <grog@lemis.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Have crashed, won't travel
Message-ID:  <36F2ABBF.9B789EDB@eboa.com>
References:  <19990304095813.I441@lemis.com> <36DDEFFD.A4DB4978@eboa.com> <19990304130126.B441@lemis.com> <36DE0352.E99BCB70@eboa.com> <19990316174710.H429@lemis.com> <36EE54A4.8DC53017@eboa.com> <19990317093436.G429@lemis.com> <36EFC56A.ACBFB0A7@eboa.com> <19990318100818.L429@lemis.com> <36F1BDBB.E9E4F323@eboa.com> <19990319150941.U429@lemis.com>

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Greg Lehey wrote:
> 
> They're not superfluous.  You're manipulating the structure of a block
> device, and you should use the character device for that.

Could you run that by me again. If /dev/wd0s1g is the device holding
the structure I need to manipulate then what is the device I should
give as parameter to fsdb?

> > The man page doesn't mention it.
> 
> I read:
> 
>     Fsdb opens fsname (usually a raw disk partition) and runs a
>     command loop allowing manipulation of the file system's inode
>     data.
> 
> In case it's not clear, a raw partition and a character device mean
> this same thing in this context.

It wasn't and still isn't. A TTY device is a character device and a
disk driver a block device. And if it is the same then why give
that error message/warning? I'm probably grossly oversimplifying things
but I'm using my unix systems to do work for me. Not vice versa <g>.

> > This message sounds like a warning that you're about to do something
> > quite foolish.
> 
> It is :-)

Should then the man page not clarify such a folly?

> Because it's a symlink:
> 
>   $ ls -l /etc/termcap
>   lrwxrwxrwx  1 root  wheel  23 Sep 28  1996 /etc/termcap -> /usr/share/misc/termcap

Should've looked better. Still, is not fsdb intended for or primarily used
in single user mode. I.e. with most fs's unmounted?

> I suppose you could argue that; if you want to, send-pr is your
> friend.

I'm not feeling that argumentative yet <g>. As well as not too sure
of myself. After all, my simplistic outlook on devices has just 
received an earth shattering blow. A simple programmer can only
know so much, you know.

Roelof

-- 
Home is where the (@) http://eboa.com/ is.


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