Very Computer

Well I just ran into another problem with an ACL that I don't
understand, and I could not find an explaination in the documentation.
I started out with the following ACL for the file 'co_info.mdb':

        # getacl co_info.mdb
        # file: co_info.mdb
        # owner: stardan
        # group: other
        user::rwx
        user:lockmang:rw-
        user:starrick:rw-
        group::---
        class:rw-
        other:---

I then changed the group from 'other' to 'Info_Sys' by executing the
following command:

        # chgrp Info_Sys co_info.mdb

which resulted in the following ACL:

        # getacl co_info.mdb
        # file: co_info.mdb
        # owner: stardan
        # group: Info_Sys
        user::rwx
        user:lockmang:rw-
        user:starrick:rw-
        group::---
        class:rw-
        other:---

After I executed this command, lockmang could no longer write to the
file even though this user was still listed in the ACL as  having
read/write permissions.  I changed the group back to other and lockmang
could write to the file again.

        # getacl co_info.mdb
        # file: co_info.mdb
        # owner: stardan
        # group: other
        user::rwx
        user:lockmang:rw-
        user:starrick:rw-
        group::---
        class:rw-
        other:---

Looking at the permission bits confuses me further!

        -rwxrw----+   1 stardan  other        491520 Dec 24 10:50 co_info.mdb

The permission bits indicate that the group 'other' has read/write
permissions yet the ACL has the entry:

        group::---

which to me means that the group 'other' has no access.

Could someone please explain what is going on?  Or point me to source
where I can read more about how ACL's work as the UNIXware docs that I
am reading do not explain enough.

Regards,

Dan Star
UNIXware 7.01.1
VisionFS 2.01.911