-----BEGIN PGP SIGNED MESSAGE-----

    Index: kern/vfs_syscalls.c
    ===================================================================
    RCS file: /home/imp/FreeBSD/CVS/src/sys/kern/vfs_syscalls.c,v
    retrieving revision 1.51.2.7
    retrieving revision 1.51.2.8
    diff -u -r1.51.2.7 -r1.51.2.8
    --- vfs_syscalls.c	1998/07/03 03:50:31	1.51.2.7
    +++ vfs_syscalls.c	1999/08/04 18:58:56	1.51.2.8
    @@ -1439,6 +1439,17 @@
	    if (error)
		    return (error);
	    vp = nd.ni_vp;
    +	if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)))
    +		return (error);
    +	/*
    +	 * Prevent non-root users from setting flags on devices.  When
    +	 * a device is reused, users can retain ownership of the device
    +	 * if they are allowed to set flags and programs assume that
    +	 * chown can't fail when done as root.
    +	 */
    +	if ((vp->v_type == VCHR || vp->v_type == VBLK) &&
    +	    ((error = suser(p->p_ucred, &p->p_acflag)) != 0))
    +		return (error);
	    LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE);
	    VOP_LOCK(vp);
	    VATTR_NULL(&vattr);

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