mount -r seems to be ignored for non-root users

[zeha]

Debian bug#980828 reports that mount -r previously worked for non-root users.

I've quickly checked on 2.36.1: mount -r with a user-/etc/fstab entry indeed silently mounts read-write.

Ref: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980828

[karelzak]

The option "-r" is between allowed options for non-root users in mount.c. Unfortunately, libmount uses "replace" mode for all options from the command line for non-root users, so all is overwritten by options from fstab.

It seems like a bug, a pretty old bug.

[zeha]

Thanks!