chmod, ownership, etc

[timcygwin]

I have the following cygwin environment set up:

/etc/passwd hacked such that user tim has group 544 rather than 513
  tim:unused_by_nt/2000/xp:1002:544:tim othy,U-olorin\tim,S-1-5-21-**etc**-1002:/home/tim:/bin/bash

cygwin installed on a shared Windows directory (E:\utils\cygwin\), with the key Windows volumes made visible using links:
  ln -s /cygdrive/c /C
  ln -s /cygdrive/d /D
  ln -s /cygdrive/e /E
  ln -s /cygdrive/f /F
  ln -s /cygdrive/p /P
  ln -s /cygdrive/i /I
  ln -s /cygdrive/l /L
  ln -s /cygdrive/t /T

/home/tim 'remapped' to my Windows area
  rm -rf /home/tim
  ln -s /F/users/tim /home/tim

and to enable chmod'ing to work:
  export CYGWIN=smbntsec

Problem is that the existing files in my Windows area have user ownership Administrators, group ownership None, e.g.,
  -rwxrwxrwx  1 Administrators None            5513 Jul 20  2005 set_from_reg.awk*

whereas new files created under cygwin have owner tim, group Administrators
  -rw-r--r--  1 tim            Administrators     0 Jan 25 08:51 rti

Before I run through a recursive chown & chgrp to have the ownership set as desired (tim/Administrators not Administrators/None), is there something that I need to do to fix the ownership rights to save having to recursively set them. And will recursive chown & chgrp screw up the existing Windows ownership?

Well I've had a quick play, creating files under Windows come up with ownership Administrators/None, files created under cygwin come up with ownership tim/Administrators, so I'd really like to have cygwin set up such that it reports tim/Administrators rather than Administrators/None even for files created under Windows - or perhaps the solution will be: What you need to set up in Windows such that ownership  will be reported as tim/Administrators.

Hope you can help...

Oh, yes:
Cygwin Configuration Diagnostics
Current System Time: Sun Jan 25 08:31:56 2009

Windows 2000 Professional Ver 5.0 Build 2195 Service Pack 4

Path: f:\users\tim\bin
        l:\lib\system
        E:\utils\cygwin\usr\local\bin
        E:\utils\cygwin\bin
        E:\utils\cygwin\bin
        c:\WINNT\system32
        c:\WINNT


Output from E:\utils\cygwin\bin\id.exe (nontsec)
UID: 1002(tim)           GID: 544(Administrators)
0(root)                  513(None)                544(Administrators)
545(Users)

Output from E:\utils\cygwin\bin\id.exe (ntsec)
UID: 1002(tim)           GID: 544(Administrators)
0(root)                  513(None)                544(Administrators)
545(Users)

SysDir: C:\WINNT\system32
WinDir: C:\WINNT

USER = 'tim'
PWD = '/home/tim/bin'
CYGWIN = 'smbntsec'
HOME = '/home/tim'
MAKE_MODE = 'unix'

Use '-r' to scan registry

a:  fd             N/A    N/A                    
b:  fd             N/A    N/A                    
c:  hd  NTFS     10244Mb  47% CP CS UN PA FC    
d:  hd  NTFS    146083Mb  61% CP CS UN PA FC     packages_user
e:  net NTFS    146083Mb  61% CP CS UN PA FC     packages_user
f:  net NTFS    146083Mb  61% CP CS UN PA FC     packages_user
g:  hd  NTFS      8707Mb  25% CP CS UN PA FC     swap
h:  hd  NTFS    131069Mb  36% CP CS UN PA FC     disk_1_ntfs_1
i:  net NTFS    146083Mb  61% CP CS UN PA FC     packages_user
j:  hd  NTFS    131069Mb  24% CP CS UN PA FC     disk_1_ntfs_2
k:  hd  NTFS     34396Mb  19% CP CS UN PA FC     disk_1_ntfs_3
l:  hd  NTFS       255Mb  45% CP CS UN PA FC     RAMdisk
m:  fd  NTFS      3951Mb  14% CP CS UN PA FC     pilgrim
n:  fd  NTFS     15487Mb  80% CP CS UN PA FC     nomad
o:  net NTFS    146083Mb  61% CP CS UN PA FC     packages_user
p:  net NTFS    146083Mb  61% CP CS UN PA FC     packages_user
r:  hd  NTFS       255Mb  45% CP CS UN PA FC     RAMdisk
t:  hd  NTFS       255Mb  45% CP CS UN PA FC     RAMdisk
v:  cd             N/A    N/A                    

E:\utils\cygwin      /          system  binmode
E:\utils\cygwin/bin  /usr/bin   system  binmode
E:\utils\cygwin/lib  /usr/lib   system  binmode
.                    /cygdrive  system  binmode,cygdrive

--------------------------------
snippage
--------------------------------
  978k 2008/11/10 l:\lib\system\cygiconv-2.dll
   22k 2001/12/13 l:\lib\system\cygintl-1.dll
   37k 2003/08/10 l:\lib\system\cygintl-2.dll
   31k 2005/11/20 l:\lib\system\cygintl-3.dll
  155k 2008/11/29 l:\lib\system\cygreadline6.dll
 1829k 2008/06/12 l:\lib\system\cygwin1.dll
    Cygwin DLL version info:
        DLL version: 1.5.25
        DLL epoch: 19
        DLL bad signal mask: 19005
        DLL old termios: 5
        DLL malloc env: 28
        API major: 0
        API minor: 156
        Shared data: 4
        DLL identifier: cygwin1
        Mount registry: 2
        Cygnus registry name: Cygnus Solutions
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Cygwin mount registry name: mounts v2
        Cygdrive flags: cygdrive flags
        Cygdrive prefix: cygdrive prefix
        Cygdrive default prefix:
        Build date: Thu Jun 12 19:34:46 CEST 2008
        CVS tag: cr-0x5f1
        Shared id: cygwin1S4
--------------------------------
mega-snippage
--------------------------------

[Corinna Vinschen-2]

On Jan 25 01:04, timcygwin wrote:

> Problem is that the existing files in my Windows area have user ownership
> Administrators, group ownership None, e.g.,
>   -rwxrwxrwx  1 Administrators None            5513 Jul 20  2005
> set_from_reg.awk*
>
> whereas new files created under cygwin have owner tim, group Administrators
>   -rw-r--r--  1 tim            Administrators     0 Jan 25 08:51 rti
>
> Before I run through a recursive chown & chgrp to have the ownership set as
> desired (tim/Administrators not Administrators/None), is there something
> that I need to do to fix the ownership rights to save having to recursively
> set them. And will recursive chown & chgrp screw up the existing Windows
> ownership?

Don't do that outside your user's directory or outside the Cygwin dir.
Changing the default Windows permissions on C:\WINNT or C:\Program Files
is not a good idea.  You might screw up your system.

> Well I've had a quick play, creating files under Windows come up with
> ownership Administrators/None, files created under cygwin come up with
> ownership tim/Administrators, so I'd really like to have cygwin set up such
> that it reports tim/Administrators rather than Administrators/None even for
> files created under Windows

Cygwin reports reality.  If the file is owned by the Administrators
group and the group None, it reports that.

> - or perhaps the solution will be: What you need
> to set up in Windows such that ownership  will be reported as
> tim/Administrators.

That's not possible.

First of all, if your account is an administrative account (one which is
member of the Administrators group), the default ownership of all files
you create is the Administrators group.  This "feature" of NT4 and Win2K
has been changed with Windows XP which sets the owner of a file to the
creator account by default, unless a Local Security Policy setting
("System objects: Default owner for objects created by members of the
Administrators group") is switched back to the former NT4/2K behaviour.

Second, if your machine is not part of a domain, the group setting for
all files created by all non-system user accounts on the machine will be
None.  There's no Local Security Policy setting or registry entry in
Windows to change the default group ownership of None in non-domain
machines.  None is not a fake name, it's the actual name of an actual
group on your machine.

See the file permission section in the Cygwin user's guide here:
http://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-files 


Corinna

--
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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[timcygwin]

Thank you.