CVS commit: src/sbin/disklabel

[David Young <dyoung%netbsd.org@localhost>]

Module Name:    src
Committed By:   dyoung
Date:           Tue Jun  5 21:48:46 UTC 2007

Modified Files:
        src/sbin/disklabel: main.c

Log Message:
Let the operator use the DISKLABELSECTOR and DISKLABELOFFSET
environment variables to override the sector number, and the
bytes-offset in the sector, where disklabel(8) writes a disklabel.

If disklabel(8) was compiled as a host tool, then the defaults
still come from the port's LABELOFFSET and LABELSECTOR #defines.
Otherwise, the defaults still come from the sysctls, kern.labelsector
and kern.labeloffset.

This change helps me create a bootable CompactFlash image with both
a Master Boot Record (MBR) and a BSD disklabel for the RouterBOARD
153.  The RB 153 is an evbmips board with a CompactFlash slot.  It
searches the MBR on a CompactFlash card for a partition containing
an ELF kernel.  When disklabel(8) is built for evbmips, it will
ordinarily overwrite an MBR with the BSD disklabel.


To generate a diff of this commit:
cvs rdiff -r1.16 -r1.17 src/sbin/disklabel/main.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.