Mail Archives: cygwin/2001/01/24/09:18:58
L Anderson wrote:
>
> Hi Earnie,
>
> Thanks for your reply. I have commented below:
>
> Earnie Boyd wrote:
> >
> > L Anderson wrote:
> >
> > > Hi,
> > >
> > > Being new to Cygwin, I searched the faq and mail archives but could find
> > > no answer to my question. An answer would be appreciated.
> > >
> > > I'm running Win98 and Cygwin 1.1.7.
> > >
> > > I have drives ... e:, f:, g: ... on win98. I installed cygwin on g:. I
> > > fire up cygwin and do:
> > > cd /
> > > mkdir e
> > > mount e: /e
> > > All is well -- e shows up in both an ls ( as e) and mount (as e: /e).
> > >
> > > Now I do:
> > > mount f: /f
> > > I get the error:
> > > mount: warning - /f does not exist
> > > but mount shows
> > > f: f/ . . .
> > > and ls doesn't show f.
> >
> > Note: it says warning, it doesn't say error. The non-list would be the
> > reason for the warning. IMO, it's probably time to make it an error.
> >
>
> Ah! Since it says "warning", the "principle of least astonishment"
> should not have been violated and therefore, the software should have
> acted consistent with my first example, i.e., have done a "mkdir f"
> before doing the "mount f: f/"?
>
> At this point, I don't know what you mean by "non-list", so I can't
> comment.
>
I was in reference to your complaint that `ls' doesn't show it.
> Based on the "side effects" of the command sequence, I agree. The
> software should have "done it right" or only issued an error message
> that said, effectively, "Hey dude, create the damn directory before you
> do a mount! Don't leave it up to me!" :-)
>
> > >
> > >
> > > If I do an ls f, all the files under f:'s root are listed.
> >
> > >
> > > If I do mkdir f, I get:
> > > mkdir: cannot make directory `f': File exists
> > >
> >
> > Yes, another reason for the warning. You can either umount /f and then do
> > the mkdir /f and mount f:/ /f or you can mkdir /cygdrive/c/cygwin/f
> > assuming / is pointed at c:/cygwin
> >
>
> I figured this out but it still doesn't answer why the directory for f
> (mount point) looks like any other directory but doesn't show up in an
> "ls" in the root?
>
> > >
> > > So where is f hiding except in the mount table?
> > >
> >
> > The mount table, in the windows registry.
> >
>
> This confirms what I expected but why doesn't "f" show up in an "ls" in
> the root (/)?
>
Uh, ls doesn't show it because ls is displaying the contents of the disk
and it doesn't reside on the disk.
> > >
> > > Why does f seem to work like any other directory (I can cd to it or its
> > > subdirs and ls their contents) but not show up in an ls at the root?
> > >
> > > Is this a bug or a feature?
> > >
> >
> > It's a feature with old history.
> >
>
> Sounds like the code needs a good "slap side da head"! Unfortunately,
> I'm not there yet. Is it a problem with "mount", "ls", "cygwinxxx.dll",
> or ...?
>
Yep. It would be mount. See src/winsup/utils/mount.cc
> Thanks for your help!
>
You're welcome,
Earnie
> Lowell Anderson
>
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