Permission bits

[Andrew DeFaria <ADeFaria at Salira dot com>]

I really wish I understood Windows security and ACLs, etc and how they 
map or don't map to Cygwin's Posix file permissions but alas I don't. 
Can somebody explain to me the following:

On my Windows XP box at home I can easily manipulate permissions:

[Home XP]: touch file
[Home XP]: ls -l file
-rw-rw-r--    1 Andrew   DeFaria         0 Feb 27 15:13 file
[Home XP]: chmod 777 file
[Home XP]: ls -l file
-rwxrwxrwx    1 Andrew   DeFaria         0 Feb 27 15:13 file*

However on my work XP box:

[Work XP]: touch file
[Work XP]: ls -l file
-rw-r--r--    1 adefaria Domain U        0 Feb 27 15:18 file
[Work XP]: chmod 777 file
[Work XP]: ls -l file
-rw-r--r--    1 adefaria Domain U        0 Feb 27 15:18 file

Now I'm wondering why I can chmod here?!? The only difference that I see 
is that at home my home directory is simply on my C drive and I'm not in 
a domain while at work my home directory is mapped from a server to my H 
drive. I know that this oddity is happening because Windows permissions 
are not equal to Posix permissions and I've tried everything I know how 
to do to get Windows to allow me to open up the permissions from a Posix 
perspective. Anybody know how I could get it so that a chmod 666 file 
will actually yield me a rw-rw-rw mask?



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