Mounting FS read-only for specific user (or root)
a-bb at gmx.net
Thu Feb 21 01:45:51 UTC 2008
I'm trying to set up a mounted filesystem that is read-write for root,
but read-only for anyone else. It will be mounted as a backup
directory, so files listed in that directory will be owned by current
users on the system but can't be writeable, regardless of the file
<normal filesystems mounted from hd1>
hd2 mounted rw in /root/backup-rw
hd2 mounted ro in /backups
Only root should be able to write to anything under /root/backup-rw/
even though normal users will own files in that directory. Normal users
should be able to read anything that permissions allow in /backups so
that they can restore files from the backup.
I was planning on using the nullfs fs type to achieve the second
mountpoint for the fs.
Is this possible?
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