dmesgfs is another example file system, which displays the device tree
information gained from dmesg(8) as a directory hierarchy. The information
can be displayed in files, or as targets of symbolic links.
% l /mnt/mainbus0
total 320
drwxr-xr-x 2 agc agc 512 May 21 22:21 .
drwxr-xr-x 2 root wheel 0 Jan 1 1970 ..
drwxr-xr-x 2 agc agc 512 May 21 22:21 acpi0
lrwxr-xr-x 1 agc agc 41 May 21 22:21 cpu0 -> cpu0 at mainbus0 apid 0: (boot processor)
lrwxr-xr-x 1 agc agc 40 May 21 22:21 ioapic -> ioapic at mainbus0 apid 1 not configured
drwxr-xr-x 2 agc agc 512 May 21 22:21 pci0
% l /mnt/mainbus0/pci0/piixide0/atabus1/atapibus0
total 256
drwxr-xr-x 2 agc agc 512 May 21 22:21 .
drwxr-xr-x 2 agc agc 512 May 21 22:21 ..
lrwxr-xr-x 1 agc agc 31 May 21 22:21 Description -> atapibus0 at atabus1: 2 targets
lrwxr-xr-x 1 agc agc 104 May 21 22:21 cd0 -> cd0 at atapibus0 drive 0: <VMware Virtual IDE CDROM Drive, 1000000000000000000, 0000000> cdrom removable
%
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