> > > What do you think about doing this only if FS_SAFE is also set, > > > so for instance at first only FUSE would allow itself to be > > > made user-mountable? > > > > > > A safe thing to do, or overly intrusive? > > > > It goes somewhat against the "no policy in kernel" policy ;). I think > > the warning in the documentation should be enough to make sysadmins > > think twice before doing anything foolish: > > Warning in which documentation? A sysadmin considering setting fs_safe > for ext2 or xfs isn't going to be looking at fuse docs, which I think is > what you're talking about. Are you going to add a file under > Documentation/filesystems? Yes, I meant documentation of the new sysctl tunable in Documentation/filesystems/proc.txt: > Index: linux/Documentation/filesystems/proc.txt > =================================================================== > --- linux.orig/Documentation/filesystems/proc.txt 2008-01-16 13:25:07.000000000 +0100 > +++ linux/Documentation/filesystems/proc.txt 2008-01-16 13:25:09.000000000 +0100 > @@ -43,6 +43,7 @@ Table of Contents > 2.13 /proc/<pid>/oom_score - Display current oom-killer score > 2.14 /proc/<pid>/io - Display the IO accounting fields > 2.15 /proc/<pid>/coredump_filter - Core dump filtering settings > + 2.16 /proc/sys/fs/types - File system type specific parameters > > ------------------------------------------------------------------------------ > Preface > @@ -2283,4 +2284,21 @@ For example: > $ echo 0x7 > /proc/self/coredump_filter > $ ./some_program > > +2.16 /proc/sys/fs/types/ - File system type specific parameters > +---------------------------------------------------------------- > + > +There's a separate directory /proc/sys/fs/types/<type>/ for each > +filesystem type, containing the following files: > + > +usermount_safe > +-------------- > + > +Setting this to non-zero will allow filesystems of this type to be > +mounted by unprivileged users (note, that there are other > +prerequisites as well). > + > +Care should be taken when enabling this, since most > +filesystems haven't been designed with unprivileged mounting > +in mind. > + > ------------------------------------------------------------------------------ > Do you think this is enough? Or do we need something more, to prevent sysadmin inadvertently setting this for an unsafe filesystem? Thanks, Miklos - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
