virtualbox-guest-dkms 4.1.42-dfsg-1+deb7u1 / usr / src / virtualbox-guest-4.1.42 / vboxsf / r0drv

/usr/src/virtualbox-guest-4.1.42/vboxsf/r0drv is in virtualbox-guest-dkms 4.1.42-dfsg-1+deb7u1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/src/virtualbox-guest-4.1.42/vboxsf/../r0drv