NTFS network drives in cygwin 1.7.5

[Gary Steele]

Dear cygwin mailing list,

I recently starting using cygwin 1.7.5, and I appear to be having
problems with file permissions on network drives.

My computer (windows XP) is part of an NT domain, to which I am logged
in. I am using the passwd and group files that were automatically
generated at install.

On the local drives, the file permissions work fine:

$ ls -ld .
drwxr-xr-x+ 1 gsteele Domain Users 0 2010-08-05 11:18 ./

However, on the network drives, they are all clobbered:

$ ls -ld /cygdrive/k/ns/qt/nanotubes/data
d-+ 1 gsteele Domain Users 0 2010-07-07 14:22
/cygdrive/k/ns/qt/nanotubes/data

I also have another computer in the same network environment running
cygwin 1.5.25, and when I log on this computer, the file permissions
for the same directory are not clobbered:

$ ls -ld /cygdrive/k/ns/qt/nanotubes/data
drwxr-xr-x 1 gsteele Domain Users 0 Jul  7 14:22
/cygdrive/k/ns/qt/nanotubes/data/

Has there been a recent change in cygwin that is causing some problems
with network drive file permissions? Is there a solution for this?

Thanks,
Gary

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Re: NTFS network drives in cygwin 1.7.5

[Corinna Vinschen]

On Aug  5 11:26, Gary Steele wrote:
 Dear cygwin mailing list,
 
 I recently starting using cygwin 1.7.5, and I appear to be having
 problems with file permissions on network drives.
 
 My computer (windows XP) is part of an NT domain, to which I am logged
 in. I am using the passwd and group files that were automatically
 generated at install.
 
 On the local drives, the file permissions work fine:
 
 $ ls -ld .
 drwxr-xr-x+ 1 gsteele Domain Users 0 2010-08-05 11:18 ./
 
 However, on the network drives, they are all clobbered:
 
 $ ls -ld /cygdrive/k/ns/qt/nanotubes/data
 d-+ 1 gsteele Domain Users 0 2010-07-07 14:22
 /cygdrive/k/ns/qt/nanotubes/data

They are not clobbered, they are now actually showing the correct POSIX
permission bits based on the file ACL by default.  In Cygwin 1.5 the
default was not to use the ACLs on network drives  and to fake the
POSIX permissions (CYGWIN=nontsec).  If you want to know why the ACL
results in d-+ permissions, I suggest to take a closer look
using getfacl.

I strongly suggest to read the new and improved 1.7 User's Guide,
especially stuff like

http://cygwin.com/cygwin-ug-net/highlights.html#ov-hi-files
http://cygwin.com/cygwin-ug-net/ov-new1.7.html
http://cygwin.com/cygwin-ug-net/using.html#mount-table
http://cygwin.com/cygwin-ug-net/using-cygwinenv.html


Corinna

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

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