[Samba] Linux Mint 21.3 client AD joined OK but no usb working

[Rowland Penny]

On Wed, 27 Mar 2024 18:13:16 +0000
Rowland Penny via samba <samba at lists.samba.org> wrote:
> 
> Now thinking about apparmor, could this be stopping writing to the
> drive ?
> 

No, I removed apparmor and rebooted, no different.

Tried to format the drive, but it seems to have gone read only, so used
another drive and formatted that.

When I insert the USB drive, it gets mounted on
/media/rowland/usbdrive1

Checking the permissions on the path, shows this:

rowland at devstation:~$ ls -ld /media/
drwxr-xr-x 4 root root 4096 Mar 27 17:15 /media/

Anyone can traverse /media

rowland at devstation:~$ ls -ld /media/rowland/
drwxr-x---+ 3 root root 4096 Mar 28 09:36 /media/rowland/

There is an EA, so check that:

rowland at devstation:~$ getfacl /media/rowland/
getfacl: Removing leading '/' from absolute path names
# file: media/rowland/
# owner: root
# group: root
user::rwx
user:rowland:r-x
group::---
mask::r-x
other::---

Only 'root', members of the 'root' group and 'rowland' can traverse /media/rowland

rowland at devstation:~$ ls -ld /media/rowland/usbdrive1/
drwxr-xr-x 3 root root 4096 Mar 28 09:32 /media/rowland/usbdrive1/

So 'rowland' can traverse to the 'usbdrive1' directory, but only
'root' can write to it.

WHY ??????????

It mounts the drive in a directory named after the user, it allows the
user to get to the drive, but then denies the user the ability to write
to the drive.

Off to find out just what 'mounts' the drive and how.

Rowland