I am probably misunderstanding something, but are DUID's supposed to be
used in place of device filenames in fstab? I suppose they are,
so this looks strange to me:

% sudo mount f777cc5bbeded528.a
mount: can't find fstab entry for f777cc5bbeded528.a.

% grep f777 /etc/fstab 
f777cc5bbeded528.a      /home ffs rw,nodev,nosuid,noauto 0 0

I have got a diff.

Index: sbin/mount/mount.c
===================================================================
RCS file: /cvs/src/sbin/mount/mount.c,v
retrieving revision 1.51
diff -u -r1.51 mount.c
--- sbin/mount/mount.c  6 Apr 2011 11:36:26 -0000       1.51
+++ sbin/mount/mount.c  11 Apr 2011 21:56:38 -0000
@@ -232,9 +232,11 @@
                        mntonname = mntbuf->f_mntonname;
                } else {
                        if ((fs = getfsfile(mntpath)) == NULL &&
-                           (fs = getfsspec(mntpath)) == NULL)
-                               errx(1, "can't find fstab entry for %s.",
-                                   *argv);
+                           (fs = getfsspec(mntpath)) == NULL &&
+                           (isduid(*argv, 0) == 0 ||
+                           (fs = getfsspec(*argv)) == NULL))
+                                       errx(1, "can't find fstab entry for 
%s.",
+                                           *argv);
                        if (BADTYPE(fs->fs_type))
                                errx(1, "%s has unknown file system type.",
                                    *argv);
-- 
Alexander Polakov | plhk.ru

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