HP CIFS Server 3.0b Administrator's Guide version A.02.01.01

Managing HP-UX File Access Permissions from Windows NT/XP/2000
UNIX File Permissions and POSIX ACLs
Chapter 346
In addition to the permission modes shown above, UNIX file permissions
also distinguish between the file owner, the owning group of the file, and
other (all other users and group).
UNIX File Owner Translation in NT ACL
A UNIX file system owner has additional permissions that others users
do not have. For example, the owner can give away his ownership of the
file, delete the file, rename the file, or change the permission mode on the
file. These capabilities are similar to the delete (D), change permissions
(P) and take ownership (O) permissions on the Windows NT client.
Samba adds the DPO permissions to represent UNIX file ownership in
the Windows NT explorer interface.
For example, if a file on the UNIX file system is owned by UNIX user
john and john has read and write (rw-) permissions on that file, the
Windows NT client will display the same permissions for user john as:
Special Access(RWDPO)
You can also display the UNIX owner in the Windows NT Explorer
interface. If you are in the File Properties dialog box with the Security
tab selected and you press the Ownership button, the owning UNIX
user's name will be displayed.
UNIX Owning Group Translation in NT ACL
The owning group on a UNIX file system is represented on the Windows
NT client with the take ownership (O) permission. While the meaning of
the take ownership permission on NT doesn't exactly match the meaning
of an owning group on the UNIX file system, this permission is still
translated into the take ownership permission.
This representation becomes even more significant when translating
VxFS POSIX ACLs, as there can be many groups with different
permissions on an individual file in this file system. Without this
permission type, you would not be able to tell the owning group entry
from other group entries.
r-- Special Access
Table 3-1 (Continued)
UNIX Permission NT access type