Package: mount
Version: 2.12r-19
Severity: normal

After creating a bind mount with "-o ro" I can still write to the target 
directory.  
Repro (notice how I can create a file in the readonly directory):

"
foo:/tmp# mkdir writable
foo:/tmp# touch writable/fluff
foo:/tmp# mkdir readonly
foo:/tmp# mount -o ro --bind writable/ readonly/
foo:/tmp# ls writable/ readonly/
readonly/:
fluff

writable/:
fluff
foo:/tmp# touch readonly/inconceivable
foo:/tmp# ls writable/ readonly/
readonly/:
fluff  inconceivable

writable/:
fluff  inconceivable
foo:/tmp# mount | grep writable
/tmp/writable on /tmp/readonly type none (ro,bind)
"

When creating a bind mount with "-o ro" I would like the target directory to be 
read 
only.

  Regards //Johan

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.21-2-686 (SMP w/2 CPU cores)
Locale: LANG=sv_SE.ISO-8859-15, LC_CTYPE=sv_SE.ISO-8859-15 (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages mount depends on:
ii  libblkid1                     1.40.2-1   block device id library
ii  libc6                         2.6.1-1+b1 GNU C Library: Shared libraries
ii  libuuid1                      1.40.2-1   universally unique id library

mount recommends no packages.

-- no debconf information



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