CVS commit: [netbsd-6] src/sys

["Jeff Rizzo" <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Thu Jul  5 17:36:31 UTC 2012

Modified Files:
        src/sys/arch/atari/atari [netbsd-6]: autoconf.c
        src/sys/dev [netbsd-6]: md.c
        src/sys/fs/msdosfs [netbsd-6]: msdosfs_vfsops.c

Log Message:
Pull up following revision(s) (requested by tsutsui in ticket #395):
        sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.95
        sys/arch/atari/atari/autoconf.c: revision 1.62
        sys/dev/md.c: revision 1.67
Add a dirty hack for atari's ancient installation ramdisk:
 Forcibly configure md0, md1, and md2 devices before setroot()
 for atari's traditional "auto-load from floppy on open" md_root device
 which loads installation ramdisk image from floppy.
 md(4) has been changed dynamically configured at first open after 5.0
 and md devices won't appear in "root device:" prompt without this hack.
Tested on TT030.
Should be pulled up to netbsd-6.
Make sure that disklabel of md(4) device is initialized
in the case where it's configured in MD md_open_hook().
Without this, msdosfs_mountfs() (which is called from msdosfs_mountroot())
will be called with uninitialized disklabel (d_secsize == 0) and
it gets "panic: buf mem pool index 23" later on atari.
This is because getdisksize() doesn't check returned d_secsize value
and msdosfs_mountfs() blindly calls bread(9) with size==0 in that case.
Should be pulled up to netbsd-6 (at least for atari).
Add a sanity check if secsize returned from getdisksize() isn't bogus.
This prevent possible panic "panic: buf mem pool index 23" later in
vfs_bio.c:buf_mempoolidx().
(I'm not sure if it's okay for getdisksize() to assume that
 partinfo taken from DIOCGPART is properly initialized
 on all disk(9) devices or not)
See also:
http://mail-index.NetBSD.org/source-changes/2012/06/30/msg035298.html


To generate a diff of this commit:
cvs rdiff -u -r1.61 -r1.61.8.1 src/sys/arch/atari/atari/autoconf.c
cvs rdiff -u -r1.66 -r1.66.14.1 src/sys/dev/md.c
cvs rdiff -u -r1.93 -r1.93.6.1 src/sys/fs/msdosfs/msdosfs_vfsops.c

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