ITEM: L5496L

Mounting a file system changes ownership of mount point

Env: AIX 3.2.5

Desc:

When customer mounts one of their file systems, the ownership changes 
from root/system to username/system.

Action:

When you mount a file system, the inode of the directory it is 
mounted over is taken over or covered up. With the file system 
unmounted, the ls -id command on /dir might come back with an inode 
of 452.  After you mount a filesystem over /dir, "ls -id /dir" would 
come back with an inode of 2, instead.

Because of this, the original ownership and permissions will be
supplanted by the file system's root directory attributes. I had the
customer mount the file system and change the attributes to what he 
wanted.  After that, mounting and unmounting left the same permissions
on the file system mount point.



Support Line: Mounting a file system changes ownership of mount point ITEM: L5496L

Dated: August 1994 Category: N/A

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