change permission on underlying mount point without unmounting

Mryius · 07-12-2012, 05:10 AM

Does anyone know how I can do a 'chmod' to change the permissions on the underlying mount point of an already mounted file system? don't want to unmount if possible.

I need to remove the write acess for group & other for when the mount is not up.

The mounted fs replaces the original values with its own.

e.g

drwxrwxrwx root root /mnt/point

becomes when mounted

drwxrwxr-x user user /mnt/point

tia.

eyanu · 07-12-2012, 06:05 AM

First of all is changing the owner as you stated by drwxrwxr-x user user /mnt/point here you use chown -R user:user /mnt/point then secondly change the permissions, there are many ways to change permissions, you should google, but for starters,
chmod 755 /mnt/point But you should better read about linux permissions to understand what's going on.