Hello,
not sure if someone has written you back about this already, but what you
are trying to do (look 'underneath' a mount point) can be done easily
without kernel modifications.
You can bind mount an existing filesystem to a new location, and examine
its contents without following existing mount points.
e.g. suppose you want to look at the directory on your root filesystem
upon which /proc is mounted:
# mount |grep 'on /proc type proc'
none on /proc type proc (rw)
this is what the root of the /proc filesystem looks like:
# ls -ld /proc
dr-xr-xr-x 200 root root 0 Mar 1 18:06 /proc
Now, temporarily bind mount the root to someplace else:
# mkdir /tmp/look
# mount --bind / /tmp/look
Now you can examine the directory underlying /proc in the root:
# ls -ld /tmp/look/proc
drwxr-xr-x 2 root root 4096 Sep 26 2005 /tmp/look/proc
# umount /tmp/look
In general I would assume that a package manager shouldn't be concerned
about these types of things, since permanent mountpoints should always be
mounted when a system is in its normal state, thus there would be no
reason to care about what's 'underneath' a mountpoint. (If someone had
root access, they could be hiding stuff there, but it they had root access
they could do a whole lot of other bad things)
-Chris Wing
wingc@xxxxxxxxxxxxxxx
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