Bruce Evans wrote:
> On Tue, 6 Feb 2001, Steve Kargl wrote:
>
> >
> > d-------w- 1 root 493 arch 4096 Jan 1 1980 msdos/
> >
> > The source in src/sbin/mount_msdos has changed in a long time,
not
> > so is this a side effect of using DEVFS?
>
> This is caused by the same bug that cause panics for exporting
> filesystems (things in mount structs moving around whenever the size
> of struct mtx changes). struct msdosfs_args is particularly well
> designed to be affected by this bug even when nothing is exported:
>
[snip of struct]
> The fields after the export field become garbage when the size of the
> export field changes. The garbage is easy to see using `ls -ld /msdos'.
Hmmm, thanks for the explanation. That o+w permission is
a little worrisome. I take it there's no way to force a
a different mode on the directory (short of never getting
world and kernel out-of-sync, which makes chasing the last
mutex bugs much more fun).
Mea culpa: I know better. It is a slice not a partition.
--
Steve
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