Bug in mount(8)?

Bug in mount(8)?

[Tetsuo Handa]

Hello.

This is not a kernel problem, but I think here is the nearest place.

I noticed that mount(8) of util-linux-2.13-0.44.fc6 is passing
wrong flags when 'mount --make-unbindable' is requested.
The mount command is passing MS_MGC_VAL instead of MS_UNBINDABLE(0x20000)
for 'mount --make-unbindable', while it is passing correct flags for
'mount --make-private' 'mount --make-shared' and 'mount --make-slave'.
I don't know this bug is FC6 specific or not.
Can you reproduce?
Regards.



# mount -t tmpfs none /mnt/

# strace mount --make-unbindable /mnt/

mount("none", "/mnt", "tmpfs", MS_MGC_VAL, "") = 0

# strace -e raw=mount mount --make-unbindable /mnt/

mount(0x9d7ce20, 0x9d7ce30, 0x9d7ce40, 0xc0ed0000, 0x9d7d508) = 0

Re: Bug in mount(8)?

[Matthew Wilcox]

On Wed, Nov 08, 2006 at 08:23:45PM +0900, Tetsuo Handa wrote:
> This is not a kernel problem, but I think here is the nearest place.
> I don't know this bug is FC6 specific or not.

You should probably report this to the FC6 bugzilla instead.

Re: Bug in mount(8)?

[Karel Zak]

On Wed, Nov 08, 2006 at 05:19:37AM -0700, Matthew Wilcox wrote:
> On Wed, Nov 08, 2006 at 08:23:45PM +0900, Tetsuo Handa wrote:
> > This is not a kernel problem, but I think here is the nearest place.
> > I don't know this bug is FC6 specific or not.
> 
> You should probably report this to the FC6 bugzilla instead.

 Already reported. This problem has been fixed in
 util-linux-2.13-0.45.fc6 which is in FC6 updates/testing/ tree. The
 final update will be released at end of this week.

 BTW, this problem is relevant for every distribution where is the
 util-linux subtree patch by Ram Pai.

       Karel

-- 
 Karel Zak  <kzak@redhat.com>