> >> Some mount options are never passed to the kernel, and thus can't appear > >> in /proc/mounts. Examples include user, users, and _netdev for NFS. > > > > These options control *who* may mount and *when* to mount. They are > > not a property of the mount itself and are not added to /etc/mtab. > > > > There's a "user=ID" option that is added to /etc/mtab in case of user > > mounts. This identifies the owner of the mount, so that it can be > > unmounted by that user. There are patches in -mm that enable the > > kernel to store this info. > > > > Do you have other examples in mind? > > [no]quota comes to mind; These are passed to the kernel. > also auto, This controls when a filesystem is mounted, same category as '_netdev' > [no]owner, [no]group, These control who can mount the filesystem, same category as 'user' and 'users' > quiet/loud, I can't find these in the manual as universal options. Quiet is defined for a couple of filesystems but with different meaning for each of them. > Aside: It's a confusing artifact of the mount CLI that these options > control who/when but are passed to the mount command in the same way the > other options are. Yes, slightly. Actually most of these options are just ignored on the command line. They only have an affect in /etc/fstab. The right behavior of mount(8) would probably be to error out on these options, since they make no sense on the command line. But this is not a kernel issue. Miklos - To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
