On Sun, Feb 20, 2005 at 02:17:14PM +0200, Cesar Martinez Izquierdo wrote: > El Domingo 20 Febrero 2005 06:47 escribiste: > > > umount manpage says that /sbin/umount.<filesystem> will be used, but > > > either it is not true, or another previous problem happens that prevents > > > umount.smbfs to be used.
> > If you depend on smbmount's suid bit to mount a share, you will not be able > > to unmount it using umount -- only using smbumount. Because umount is > > itself suid, it must implement its own security checks before turning over > > control to the per-fstype helper program, so only shares mounted as > > standard user mounts can be unmounted this way. > Hi, /etc/fstab : > //mizar/cemariz$ /mnt/upv smbfs > defaults,user,noauto,username=cemariz,workgroup=ALUMNO,ip=mizar.cc.upv.es 0 0 > Then: > $ mount /mnt/upv > Password: > $ > (it's correctly mounted, as normal user, using mount, not smbmount). > Then: > $ umount /mnt/upv > umount: only root can unmount //mizar/cemariz$ from /mnt/upv Ok, confirmed, mount.smbfs is responsible for writing out the /etc/mtab entry and does not include anything saying what user is allowed to unmount it. This is a bug in smbfs, not in mount. -- Steve Langasek postmodern programmer
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