##/bin/sh # # Functions useful for xfs_repair tests # # Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. # # This program is free software; you can redistribute it and/or modify it # under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License along # with this program; if not, write the Free Software Foundation, Inc., 59 # Temple Place - Suite 330, Boston MA 02111-1307, USA. # # Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, # Mountain View, CA 94043, or: # # http://www.sgi.com # # For further information regarding this notice, see: # # http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ # _zero_position() { value=$1 struct="$2" # set values for off/len variables provided by db eval `xfs_db -r -c "$struct" -c stack $SCRATCH_DEV | perl -ne ' if (/byte offset (\d+), length (\d+)/) { print "offset=$1\nlength=$2\n"; exit }'` if [ -z "$offset" -o -z "$length" ]; then echo "cannot calculate offset ($offset) or length ($length)" exit fi length=`expr $length / 512` src/devzero -v $value -b 1 -n $length -o $offset $SCRATCH_DEV } _filter_repair() { perl -ne ' # for sb /- agno = / && next; # remove each AG line (variable number) s/(pointer to) (\d+)/\1 INO/; s/(sb root inode value) (\d+)/\1 INO/; s/(realtime bitmap inode) (\d+)/\1 INO/; s/(realtime summary inode) (\d+)/\1 INO/; s/(inconsistent with calculated value) (\d+)/\1 INO/; s/\.+(found)/\1/g; # remove "searching" output # for agf + agi s/(bad length -{0,1}\d+ for ag. 0, should be) (\d+)/\1 LENGTH/; s/(bad length # -{0,1}\d+ for ag. 0, should be) (\d+)/\1 LENGTH/; s/(bad agbno) (\d+)/\1 AGBNO/g; s/(max =) (\d+)/\1 MAX/g; # for root inos s/(on inode) (\d+)/\1 INO/g; s/(imap claims a free inode) (\d+)/\1 INO/; s/(imap claims in-use inode) (\d+)/\1 INO/; s/(cleared root inode) (\d+)/\1 INO/; s/(resetting inode) (\d+)/\1 INO/; s/(disconnected dir inode) (\d+)/\1 INO/; print;' } _filter_dd() { fgrep -v records # lose records in/out lines } # do some controlled corrupting & ensure repair recovers us # _check_repair() { value=$1 structure="$2" _zero_position $value "$structure" xfs_repair $SCRATCH_DEV 2>&1 | _filter_repair # some basic sanity checks... _check_fs $SCRATCH_DEV mount -t xfs $SCRATCH_DEV $SCRATCH_MNT #mount dd if=/bin/sh of=$SCRATCH_MNT/sh 2>&1 |_filter_dd #open,write dd if=$SCRATCH_MNT/sh of=/dev/null 2>&1 |_filter_dd #read rm -f $SCRATCH_MNT/sh #unlink umount $SCRATCH_MNT #umount } # make sure this script returns success /bin/true