====== Manipulate storage devices with D-Bus udisks2 ======

Debian 11 Bullseye installs the **udisks2** package, which allow storage devices to be mounted in user sapace.

===== exFAT default mount options =====

We prefer to have the **fmask=0133** mount option when mounting external exFAT storage device (e.g. SD card from the action camera); having the exec bit enabled on images and videos is quite annoying.

Create the file **/etc/udisks2/mount_options.conf** with:

<file>
[defaults]
exfat_defaults=uid=$UID,gid=$GID,fmask=0133
</file>

Restart the daemon with

<code>
systemctl restart udisks2.service
</code>

then check that you can mount a device using a regular unprivileged user:

<code>
udisksctl mount -b /dev/sdb1
</code>

Using **mount** verify that the mounting options are the ones expected:

<code>
rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0133,dmask=0022,
    iocharset=utf8,errors=remount-ro,uhelper=udisks2
</code>