Mail Archives: cygwin/2007/10/19/18:09:59
On Fri, 19 Oct 2007, Corinna Vinschen wrote:
> On Oct 19 09:46, Igor Peshansky wrote:
> > On Fri, 19 Oct 2007, Eric Blake wrote:
> > > According to Igor Peshansky on 10/19/2007 7:29 AM:
> > > > I could, but the issue is more basic than where the script lives.
> > > > Right now Cygwin populates the /dev directory as a virtual
> > > > directory within the DLL. The script I'm talking about will make
> > > > /dev a real directory, and the only thing Cygwin will deal with is
> > > > devices.
>
> I don't see the point.
Ok, fair enough. There was a mailing list discussion a while ago that
involved Christopher Faylor stating that he'd like to see such
functionality at some point, so I figured I'd work on a script to do that.
If Cygwin wants to keep the files in /dev virtual, I have no problems
keeping the current create_devices.sh script.
> > > > What the transition would entail is not clear to me.
> > >
> > > But the bash postinstall script already creates /dev as a real
> > > directory, as of my release announcement; it just isn't very
> > > populated. I think making the script its own package in base, then
> > > making bash depend on that package, would be worthwhile.
>
> ...and the syslog-ng-config as well as the syslogd-config scripts
> also create /dev if it doesn't exist so that syslog-ng/syslogd can
> create a /dev/log socket.
Yes, I already corrected myself that I meant the files in /dev, not /dev
itself.
> > Sorry, I was imprecise. Whether /dev is a real directory or not is
> > irrelevant. However, the *files* in /dev are virtual, and therefore
> > the command "mknod -m 666 c 1 3 /dev/null" will fail, because, as far
> > as the Cygwin DLL is concerned, /dev/null already exists.
> >
> > Plus, we might get into some ordering issues on when to run this
> > script...
>
> I'm under the impression you're thinking about this too complicated. The
> script could be a postinstall script in the Base category, so it's
> getting run automatically on install.
>
> Cygwin itself does not depend on the existence of /dev, so there's no
> problem with order or so. For the virtual devices which are handled by
> Cygwin you don't need to call mknod. Just create empty files, like
> this:
>
> $ touch `cygpath -am /dev`/null
> $ ls -l /dev/null
> crw-rw-rw- 1 corinna root 1, 3 Dec 1 2006 /dev/null
>
> As you can see, Cygwin does never evaluate a DOS path as virtual device,
> while it always evaluates the POSIX path into the virtual device. Voila.
That is exactly what the current create_devices.sh does.
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!)
|,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
Belief can be manipulated. Only knowledge is dangerous. -- Frank Herbert
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
- Raw text -