Re: Mounting old BSD filesystem

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

On Mon, 3 Mar 2025, Michael van Elst wrote:
> mlelstv%serpens.de@localhost (Michael van Elst) writes:
>
> > mlelstv%serpens.de@localhost (Michael van Elst) writes:
>
> > > the direct struct doesn't use the d_namlen field, it's always zero.
>
> > Correction, it apparently uses a 16bit d_namlen field and d_type is missing.
> > This is the OLDDIRFMT.
>
>
> Eh voila:
>
> % ls -l /mnt
> total 797
> lrwxrwxrwx   1 root  wheel        8 Dec 17  1990 bin -> /usr/bin
> drwxr-xr-x   2 root  wheel     3584 Nov 21  2002 dev
> drwxr-xr-x   4 root  wheel     1024 Nov 21  2002 etc
> -rw-r--r--   1 root  wheel        0 Nov 21  2002 fastboot
> drwxr-xr-x   3 root  wheel      512 Oct 25  1990 home
> lrwxrwxrwx   1 root  wheel        8 Dec 17  1990 lib -> /usr/lib
> drwxr-xr-x   2 root  wheel     4096 Oct 25  1990 lost+found
> drwxr-xr-x   2 root  wheel      512 Oct 25  1990 mnt
> drwxr-xr-x   2 root  wheel      512 Mar  4  1991 mnt2
> drwxr-xr-x   3 root  wheel      512 Nov  6  1990 packages
> drwxr-xr-x   3 root  wheel      512 Oct 25  1990 release
> drwxr-xr-x   2 root  wheel     1024 Nov 21  2002 sbin
> -rw-r--r--   1 root  wheel        0 Oct 25  1990 slowboot
> -rw-------   1 root  wheel  8388608 Nov 21  2002 swapfile
> drwxr-xr-x   2 root  wheel      512 Oct 25  1990 tftpboot
> drwxrwxrwt   2 root  wheel      512 Nov 21  2002 tmp
> drwxr-xr-x  16 root  wheel      512 Nov 27  1990 usr
> drwxr-xr-x  11 root  wheel      512 Nov 27  1990 var
> -rwxr-xr-x   1 root  wheel   806064 Dec 14  1990 vmunix
>
> arnold% file /mnt/vmunix
> /mnt/vmunix: a.out little-endian 32-bit demand paged pure executable not stripped

Looking good! Also mmm, a kernel that's 800k in size :-)

Are these changes commitable?

--
Stephen