Package: virtualbox-ose-guest-utils Version: 1.6.6-dfsg-3 Severity: normal --- Please enter the report below this line. --- hi,
the mount.vboxsf binary and/or vboxvfs kernel module do distinguish between absolute and relative paths and don't ignore trailing slashes. i tried the following test scenario to reproduce the bug: 1. just to avoid confusion, there's no vboxvfs mounted: da:/home/fuddl# mount /dev/hda1 on / type ext3 (rw,errors=remount-ro) tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) udev on /dev type tmpfs (rw,mode=0755) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620) fusectl on /sys/fs/fuse/connections type fusectl (rw) 2. mount a vboxvfs file system and check by calling "mount", if it succeeded: da:/home/fuddl# mount -t vboxsf impl ./test da:/home/fuddl# mount [...] impl on ./test type vboxsf (rw) note that i told mount to mount the filesystem to "./test", which is an empty directory in the current working directory "/home/fuddl", so i'd usually expect, that the output of mount would say "impl on /home/fuddl/test type vboxsf (rw)" 3. if the filesystem is mounted to "./test" i wondered if it's accessible from another current working directory. it is: da:/home/fuddl# cd .. da:/home# ls fuddl/test ecc-0.2.2.tar.gz linux-2.6.27.5.tar.bz2 max-home max-sources 4. after changing the current working directory back to "/home/fuddl" i want to un-mount the filesystem. running a simple "umount test" does un-mount the filesystem, but still mount shows the filesystem to be mounted: da:/home/fuddl# umount test da:/home/fuddl# mount [...] impl on ./test type vboxsf (rw) to see if it's still present or really gone, i tried: da:/home/fuddl# ls test yes, it's gone, so the output of mount is incostistent. 5. after that i tried "umount ./test" instead of "umount test". it told me that "./test" isn't mounted, but it helps to make mount print consistent information: da:/home/fuddl# umount ./test umount: ./test: not mounted da:/home/fuddl# mount /dev/hda1 on / type ext3 (rw,errors=remount-ro) tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) udev on /dev type tmpfs (rw,mode=0755) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620) fusectl on /sys/fs/fuse/connections type fusectl (rw) i can reproduce the same strange behaviour if a trailing slash is at the end of the mount -t vboxsf command. then one has to add the trailing slash also to the umount command to make it un-mount the filesystem and also make mount no longer show the mount-point. cheers - fuddl
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