Can NTFS junctions be listed?

Can NTFS junctions be listed?

[John and Holly Klug]

Is there a utility for cygwin that can list NTFS junction points?  
Perhaps an option for find?  I am interested in junctions that are not 
on the same partition.

It appears that junctions from sysinternals.com gets an invalid 
instruction when run my Athlon XP machine.

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Re: Can NTFS junctions be listed?

[Linda Walsh]

Be sure to report the details to Mark (@sysinternals) -- he's usually
pretty good about fixes (at least he used to be before he worked for
_Microsoft_)...:-)
-linda

John and Holly Klug wrote:
> Is there a utility for cygwin that can list NTFS junction points?  
> Perhaps an option for find?  I am interested in junctions that are not 
> on the same partition.
>
> It appears that junctions from sysinternals.com gets an invalid 
> instruction when run my Athlon XP machine.

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RE: Can NTFS junctions be listed?

[Herb Martin]

> Is there a utility for cygwin that can list NTFS junction points?  
> Perhaps an option for find?  I am interested in junctions 
> that are not 
> on the same partition.
> 
> It appears that junctions from sysinternals.com gets an invalid 
> instruction when run my Athlon XP machine.

I don't know the answer to your question, and it
is quite possible that you have thought of the 
following but it's better if you decide if it is
useful:

You might try a couple of the built-in, Reskit or
support tools:

"Dir /ad" (attribute directory) will find junctions
or reparse points which you could parse with Perl
(etc) and feed to either LinkD.exe or FSUtil.exe
such, e.g.:

  fsutil reparsepoint query c:\prog

(...and you would need to further parse the output 
to do anything useful probably.)

Problem is that the tools that "know" about junctions
don't search for them so you have to use something like
"dir" to first find them so it is a bit ugly.

--
Herb Martin, MCSE, MVP
HerbM@LearnQuick.Com http://LearnQuick.Com
512 388 7339   -or-   1 800 MCSE PRO
Accelerated MCSE in a Week Seminars 

> -----Original Message-----
> From: cygwin-owner@cygwin.com 
> [mailto:cygwin-owner@cygwin.com] On Behalf Of John and Holly Klug
> Sent: Sunday, July 23, 2006 12:43 PM
> To: cygwin@cygwin.com
> Subject: Can NTFS junctions be listed?
> 
> 
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Re: Can NTFS junctions be listed?

[Larry Hall (Cygwin)]

John and Holly Klug wrote:
> Is there a utility for cygwin that can list NTFS junction points?  
> Perhaps an option for find?  I am interested in junctions that are not 
> on the same partition.


No, there is no Cygwin utility that is conscious of junction points.


> It appears that junctions from sysinternals.com gets an invalid 
> instruction when run my Athlon XP machine.


As mentioned, that's an issue for the sysinternals folks.


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Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

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Re: Can NTFS junctions be listed?

[Larry Hall (Cygwin)]

Christopher Faylor wrote:
> On Sun, Jul 23, 2006 at 10:54:29PM -0400, Larry Hall (Cygwin) wrote:
>> John and Holly Klug wrote:
>>> Is there a utility for cygwin that can list NTFS junction points?  
>>> Perhaps an option for find?  I am interested in junctions that are not 
>>> on the same partition.
>> No, there is no Cygwin utility that is conscious of junction points.
> 
> And that's basically because there isn't any linux utility that is conscious
> of junction points.
> 
> Why do I get the feeling that people are consistently missing the point of
> this project?


Maybe it would help if you could start by explaining what Linux is.  It's
like DOS but with more features, right?


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RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

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Re: Can NTFS junctions be listed?

[Christopher Faylor]

On Sun, Jul 23, 2006 at 10:54:29PM -0400, Larry Hall (Cygwin) wrote:
>John and Holly Klug wrote:
>>Is there a utility for cygwin that can list NTFS junction points?  
>>Perhaps an option for find?  I am interested in junctions that are not 
>>on the same partition.
>
>No, there is no Cygwin utility that is conscious of junction points.

And that's basically because there isn't any linux utility that is conscious
of junction points.

Why do I get the feeling that people are consistently missing the point of
this project?

cgf

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Re: Can NTFS junctions be listed?

[Christopher Faylor]

On Sun, Jul 23, 2006 at 10:57:11PM -0400, Christopher Faylor wrote:
>On Sun, Jul 23, 2006 at 10:54:29PM -0400, Larry Hall (Cygwin) wrote:
>>John and Holly Klug wrote:
>>>Is there a utility for cygwin that can list NTFS junction points?  
>>>Perhaps an option for find?  I am interested in junctions that are not 
>>>on the same partition.
>>
>>No, there is no Cygwin utility that is conscious of junction points.
>
>And that's basically because there isn't any linux utility that is conscious
>of junction points.
>
>Why do I get the feeling that people are consistently missing the point of
>this project?

In case this isn't clear, I know that *Larry* gets it.

cgf

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Re: Can NTFS junctions be listed?

[Christopher Faylor]

On Sun, Jul 23, 2006 at 11:02:00PM -0400, Larry Hall (Cygwin) wrote:
>Christopher Faylor wrote:
>>On Sun, Jul 23, 2006 at 10:54:29PM -0400, Larry Hall (Cygwin) wrote:
>>>John and Holly Klug wrote:
>>>>Is there a utility for cygwin that can list NTFS junction points?  
>>>>Perhaps an option for find?  I am interested in junctions that are not 
>>>>on the same partition.
>>>No, there is no Cygwin utility that is conscious of junction points.
>>
>>And that's basically because there isn't any linux utility that is 
>>conscious
>>of junction points.
>>
>>Why do I get the feeling that people are consistently missing the point of
>>this project?
>
>Maybe it would help if you could start by explaining what Linux is.  It's
>like DOS but with more features, right?

Yes.  Think "OS/2" and you won't be too far right.

cgf

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Re: Can NTFS junctions be listed?

[Larry Hall (Cygwin)]

Christopher Faylor wrote:
> On Sun, Jul 23, 2006 at 11:02:00PM -0400, Larry Hall (Cygwin) wrote:
>> Christopher Faylor wrote:
>>> On Sun, Jul 23, 2006 at 10:54:29PM -0400, Larry Hall (Cygwin) wrote:
>>>> John and Holly Klug wrote:
>>>>> Is there a utility for cygwin that can list NTFS junction points?  
>>>>> Perhaps an option for find?  I am interested in junctions that are not 
>>>>> on the same partition.
>>>> No, there is no Cygwin utility that is conscious of junction points.
>>> And that's basically because there isn't any linux utility that is 
>>> conscious
>>> of junction points.
>>>
>>> Why do I get the feeling that people are consistently missing the point of
>>> this project?
>> Maybe it would help if you could start by explaining what Linux is.  It's
>> like DOS but with more features, right?
> 
> Yes.  Think "OS/2" and you won't be too far right.


Ahhh, I get it.  Too bad Linux isn't more like Unix...

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

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Re: Can NTFS junctions be listed?

[Reini Urban]

> John and Holly Klug wrote:
>> Is there a utility for cygwin that can list NTFS junction points?  
>> Perhaps an option for find?  I am interested in junctions that are not 
>> on the same partition.

posix does not display hard links as special file/dir attributes.
windows/dos does: cmd.exe dir lists it correctly (<VERBINDUNG> in
german). totalcmd as <LNK>

ls -li will print the number of links and inode number of each file.
such hard links will have the same inode number and same number of links.
Sorry, I'm not aware of a simple utility to print such hardlinks, esp. 
since linux does not support hardlinked directories.

>> It appears that junctions from sysinternals.com gets an invalid 
>> instruction when run my Athlon XP machine.

Linda Walsh schrieb:
> Be sure to report the details to Mark (@sysinternals) -- he's usually
> pretty good about fixes (at least he used to be before he worked for
> _Microsoft_)...:-)
> -linda

before doing that:
do you need the x64 version of junction.exe?
there's none yet. you'll have to compile it by your own.
-- 
Reini Urban
http://phpwiki.org/  http://murbreak.at/
http://helsinki.at/  http://spacemovie.mur.at/


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Re: Can NTFS junctions be listed?

[Corinna Vinschen]

On Jul 27 14:10, mwoehlke wrote:
> Corinna Vinschen wrote:
> >[snip] Another annoying fact is that we have three
> >different types of symlinks then.  Sigh.
> 
> Four, if Interix symlinks were supported :-(.

No, no, no.  Two is bad enough, three is worse, but at least the
third method is a native one, four is just hell.


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
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Red Hat

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Re: Can NTFS junctions be listed?

[mwoehlke]

Corinna Vinschen wrote:
> [snip] Another annoying fact is that we have three
> different types of symlinks then.  Sigh.

Four, if Interix symlinks were supported :-(.

-- 
Matthew
Ok, so the quotes aren't entirely original.


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Re: Can NTFS junctions be listed?

[Corinna Vinschen]

On Jul 27 09:42, Dave Korn wrote:
> On 27 July 2006 08:10, Corinna Vinschen wrote:
> 
> > On Jul 26 21:35, Eric Blake wrote:
> >> -----BEGIN PGP SIGNED MESSAGE-----
> >> Hash: SHA1
> >> 
> >> According to John and Holly Klug on 7/25/2006 7:32 PM:
> >>> It would still be nice if cygwin "find" supported junctions.
> >> 
> >> cygwin "find" will only support junctions if the underlying cygwin is
> >> changed to support them, at which point all cygwin programs that do
> >> traversal will do so at the same time.
> > 
> > Can anybody explain to me what "supporting junctions" is supposed to
> > mean in POSIX terms?
>  
> 
>   Make it look like an xdev mountpoint or perhaps a hard link?

Junctions used as mount points should already work by returning another
device number in st_dev on stat(2).  Junctions used as symlinks to other
directories are not treated as symlinks right now and I'm not actually
inclined to implement them at all.  Junctions used as generic symlinks
are only available starting with Windows Vista/Longhorn and are not
treated as symlinks so far.  I will implement junction symlinks when
Vista gets released.  While it's nice to see Windows starting to
implement native symlinks, they are not *quite* as transparent as they
should be, unfortunately.  Another annoying fact is that we have three
different types of symlinks then.  Sigh.


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
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RE: Can NTFS junctions be listed?

[Dave Korn]

On 27 July 2006 08:10, Corinna Vinschen wrote:

> On Jul 26 21:35, Eric Blake wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>> 
>> According to John and Holly Klug on 7/25/2006 7:32 PM:
>>> It would still be nice if cygwin "find" supported junctions.
>> 
>> cygwin "find" will only support junctions if the underlying cygwin is
>> changed to support them, at which point all cygwin programs that do
>> traversal will do so at the same time.
> 
> Can anybody explain to me what "supporting junctions" is supposed to
> mean in POSIX terms?
 

  Make it look like an xdev mountpoint or perhaps a hard link?

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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Re: Can NTFS junctions be listed?

[Corinna Vinschen]

On Jul 26 21:35, Eric Blake wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> According to John and Holly Klug on 7/25/2006 7:32 PM:
> > It would still be nice if cygwin "find" supported junctions.
> 
> cygwin "find" will only support junctions if the underlying cygwin is
> changed to support them, at which point all cygwin programs that do
> traversal will do so at the same time.

Can anybody explain to me what "supporting junctions" is supposed to
mean in POSIX terms?


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
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Red Hat

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Re: Can NTFS junctions be listed?

[Eric Blake]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

According to John and Holly Klug on 7/25/2006 7:32 PM:
> It would still be nice if cygwin "find" supported junctions.

cygwin "find" will only support junctions if the underlying cygwin is
changed to support them, at which point all cygwin programs that do
traversal will do so at the same time.

- --
Life is short - so eat dessert first!

Eric Blake             ebb9@byu.net
volunteer cygwin findutils maintainer
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RE: Can NTFS junctions be listed?

[John and Holly Klug]

> It appears that junctions from sysinternals.com gets an invalid 
> instruction when run my Athlon XP machine.

This turns out to be incorrect.  The junction program with the invalid 
instruction was a different program of the same name from the tools of 
the windows resource kits, which was first in my path.

It would still be nice if cygwin "find" supported junctions.

Thanks.


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