Cannot set permissions via the chmod or git init --share=0666

[ghost]

Windows 7 x64; Git for Windows v.2.5.2; I work without the admin permissions.

The chmod and --shared do nothing in the Git Bash for Windows:

Developer@BUSHCOMP MINGW64 /d/temp/000
$ git --version
git version 2.5.2.windows.1

Developer@BUSHCOMP MINGW64 /d/temp/000
$ ls -l readme.txt
-rw-r--r-- 1 Developer Domain users 0 Sep 10 16:44 readme.txt

Developer@BUSHCOMP MINGW64 /d/temp/000
$ chmod a+rw readme.txt

Developer@BUSHCOMP MINGW64 /d/temp/000
$ ls -l readme.txt
-rw-r--r-- 1 Developer Domain users 0 Sep 10 16:44 readme.txt

Permissions of the readme.txt file wasn't changed.

Developer@BUSHCOMP MINGW64 /d/temp/000
$ chmod 666 readme.txt

Developer@BUSHCOMP MINGW64 /d/temp/000
$ ls -l readme.txt
-rw-r--r-- 1 Developer Domain users 0 Sep 10 16:44 readme.txt

Permissions of the readme.txt file wasn't changed again...

Ok, I try to use --shared=0666:

Developer@BUSHCOMP MINGW64 /d/temp/000/111
$ git init --shared=0666
Bare repository is initialized Git в D:/temp/000/111/.git/

Developer@BUSHCOMP MINGW64 /d/temp/000/111 (master)
$ echo 2>test.txt

Developer@BUSHCOMP MINGW64 /d/temp/000/111 (master)
$ git add test.txt

Developer@BUSHCOMP MINGW64 /d/temp/000/111 (master)
$ git commit -m "Test"
[master (root commit) 0d01d64] Test
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 test.txt

Developer@BUSHCOMP MINGW64 /d/temp/000/111 (master)
$ ls -l test.txt
-rw-r--r-- 1 Developer Domain users 0 Sep 10 17:10 test.txt

At this case I see -rw-r--r-- instead of -rw-rw-rw- also.

ACL:

[dscho]

POSIX-style permissions (i.e. read/write/executable flags for user/group/others) are inherently incompatible with Windows' Access Control Lists (which are much more fine-grained).

Acknowledging this, Git itself only has the notion of an executable bit; it ignores everything else.