On 14/12/2024 22:11, Greg Wooledge wrote:
hobbit:~$ mount | grep portal portal on /run/user/1000/doc type fuse.portal (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000) That looks reasonable. I don't know what it's *for*, but at least it's not in a system-wide location that doesn't exist on a regular Debian system.
In the OP it is not system-wide, but still unusual (overriden XDG_* environment?): /home/mike/.cache/doc
Sanboxed applications running in mount namespaces may have no direct access to your or system files. desktop-portal allows to selectively expose some files on demand. An application sends a D-Bus request and host opens file chooser.