I know that I can declare in /etc/fstab that a user can mount and unmount a partition without root permission using user(s). But I seem to be unable to achieve the same in a mount command without fstab entry.
Attempts
I tried the following options: user, users, owner, group (the last two with and without specifying a value). But the issue is that, since it is not an fstab entry, I have to use sudo anyways, and the manual (for users) says:
Allow any user to mount and to unmount the filesystem, even when some other ordinary user mounted it.
Which seems to imply that if the root user mounted it, it does not matter, which I confirmed through my experiments
Question
Is there any way to mount (with root permissions) in a way that allows ordinary users to unmount, without an fstab entry?
umount, which, contrary tomount, does not seem to pose any security threats