1 #!/bin/bash 2 3 typeset -i I ITERATIONS PHASE LOC COUNT MAXCOUNT 4 5 ME=`basename $0` 6 7 if [ "$#" -ne 3 ] 8 then 9 echo "$ME: Usage: $ME <iterations> <maxcount> <filesystem_image>" >&2 10 exit 1; 11 fi 12 13 ITERATIONS="$1" 14 MAXCOUNT="$2" 15 ORIG_FS_IMAGE="$3" 16 FIXED_FS_IMAGE="/tmp/fixedfsimage.$$" 17 NEW_FS_IMAGE="/tmp/newfsimage.$$" 18 19 if [ ! -f "$ORIG_FS_IMAGE" ] 20 then 21 echo "$ME: Filesystem image $NEW_FS_IMAGE does not exist" >&2 22 exit 1 23 fi 24 25 trap "rm -f $NEW_FS_IMAGE $FIXED_FS_IMAGE" 0 1 2 3 15 26 27 rm -f "$NEW_FS_IMAGE" "$FIXED_FS_IMAGE" 28 29 # Create the fixed image to compare against 30 cp "$ORIG_FS_IMAGE" "$FIXED_FS_IMAGE" 31 ext4fixup "$FIXED_FS_IMAGE" 32 33 if [ "$?" -ne 0 ] 34 then 35 echo "$ME: ext4fixup failed!\n" 36 exit 1 37 fi 38 39 I=0 40 while [ "$I" -lt "$ITERATIONS" ] 41 do 42 # There is also a phase 4, which is writing out the updated superblocks and 43 # block group descriptors. Test the with a separate script. 44 let PHASE="$RANDOM"%3 # 0 to 2 45 let PHASE++ # 1 to 3 46 let LOC="$RANDOM"%2 # 0 to 1 47 let LOC++ # 1 to 2 48 let COUNT="$RANDOM"%"$MAXCOUNT" 49 50 # Make a copy of the original image to fixup 51 cp "$ORIG_FS_IMAGE" "$NEW_FS_IMAGE" 52 53 # Run the fixup tool, but die partway through to see if we can recover 54 ext4fixup -d "$PHASE,$LOC,$COUNT" "$NEW_FS_IMAGE" 2>/dev/null 55 56 # run it again without -d to have it finish the job 57 ext4fixup "$NEW_FS_IMAGE" 58 59 if cmp "$FIXED_FS_IMAGE" "$NEW_FS_IMAGE" 60 then 61 : 62 else 63 echo "$ME: test failed with parameters $PHASE, $LOC, $COUNT" 64 exit 1 65 fi 66 67 rm -f "$NEW_FS_IMAGE" 68 69 let I++ 70 done 71 72
