Check file is locked?

Rajat rajat.dudeja at gmail.com
Thu Jul 9 12:03:00 CEST 2009


On Jul 9, 1:21 pm, Tim Golden <m... at timgolden.me.uk> wrote:
> Rajat wrote:
> > I've used the Handle.exe and got the following results:
>
> > ---------------------------------------------------------------------------­---
> > notepad.exe pid: 3540 COMP\rajatd
> >     C: File  (RW-)   C:\Documents and Settings\rajatd\Desktop
> >    10: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
> > Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
> >    44: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
> > Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
> >    7C: Section       \BaseNamedObjects\ShimSharedMemory
>
> > ---------------------------------------------------------------------------­---
> > wordpad.exe pid: 2212 COMP\rajatd
> >    1C: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
> > Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
> >    40: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
> > Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
> >    74: Section       \BaseNamedObjects\ShimSharedMemory
> >    F8: Section       \BaseNamedObjects
> > \CiceroSharedMemDefaultS-1-5-21-57989841-1580818891-839522115-1653
> >   170: Section       \BaseNamedObjects\RotHintTable
> >   184: File  (RW-)   C:\Documents and Settings\rajatd\My Documents
>
> > I've also parsed this output for the PIDS. But no where in the result
> > I got to know what file has been associated with a PID.
>
> > Does for this I need to use pustil?
>
> Well unless I'm missing your point considerably, the output tells
> you all you need to know: notepad.exe (pid 3540) has some kind
> of handle open on the desktop, the common controls DLL and an
> area of shared memory. As has been pointed out elsewhere, notepad
> doesn't hold the file open which it's editing: it opens it, reads
> the contents, and closes it again.
>
> For demonstration purposes:
>
> <code>
> import os, sys
> import subprocess
>
> f = open (sys.executable)
> subprocess.call (["handle", sys.executable])
> f.close ()
>
> </code>
>
> TJG- Hide quoted text -
>
> - Show quoted text -

The Notepad process information is fine here. However, with wordpad
the results are not much differentiating:

------------------------------------------------------------------------------
wordpad.exe pid: 2832 COMP\rajatd
   1C: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
   40: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
   74: Section       \BaseNamedObjects\ShimSharedMemory
   F8: Section       \BaseNamedObjects
\CiceroSharedMemDefaultS-1-5-21-57989841-1580818891-839522115-1653
  170: Section       \BaseNamedObjects\RotHintTable
  184: File  (RW-)   C:\Documents and Settings\rajatd\My Documents
------------------------------------------------------------------------------
wordpad.exe pid: 844 COMP\rajatd
   1C: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
   40: File  (RW-)   C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83
   74: Section       \BaseNamedObjects\ShimSharedMemory
   F8: Section       \BaseNamedObjects
\CiceroSharedMemDefaultS-1-5-21-57989841-1580818891-839522115-1653
  170: Section       \BaseNamedObjects\RotHintTable
  184: File  (RW-)   C:\Documents and Settings\rajatd\My Documents

Both the wordpad applications opened 2 totally different files kept at
different locations on the system.

So, on the basis of above results one can not say out of these 2
wordpad apps which is the right one that could be closed. The only
different thing among the two is the PIDs.



More information about the Python-list mailing list