| #!/bin/sh |
| OPTS="-O bigalloc -C 8192" |
| SIZE=4096 |
| IMG=/tmp/foo.img |
| TMP=$(mktemp) |
| SIZE_A=15000 |
| SIZE_B=5000 |
| SIZE_C=20000 |
| |
| DEBUGFS=./debugfs/debugfs |
| MKE2FS=./misc/mke2fs |
| FSCK=./e2fsck/e2fsck |
| |
| dd if=/dev/zero of=$IMG bs=1k count=$SIZE |
| echo $MKE2FS -F -t ext4 -L test $OPTS test.img $SIZE |
| $MKE2FS -F -t ext4 -L test $OPTS $IMG $SIZE |
| dd if=/dev/zero of=$TMP bs=$SIZE_A count=1 >& /dev/null |
| echo Writing $SIZE_A bytes to a |
| $DEBUGFS -w -R "write $TMP a" $IMG |
| BLKS=$(./debugfs/debugfs -R "blocks a" $IMG) |
| cp /dev/null $TMP |
| echo "Releasing blocks $BLKS" |
| for i in $BLKS ; do echo "freeb $i" >> $TMP; done |
| $DEBUGFS -w $IMG < $TMP >& /dev/null |
| |
| echo Writing $SIZE_B bytes to b |
| dd if=/dev/zero of=$TMP bs=$SIZE_B count=1 >& /dev/null |
| $DEBUGFS -w -R "write $TMP b" $IMG |
| if [ -n "$SIZE_C" ]; then |
| BLKS=$(./debugfs/debugfs -R "blocks b" $IMG) |
| cp /dev/null $TMP |
| echo "Releasing blocks $BLKS" |
| for i in $BLKS ; do echo "freeb $i" >> $TMP; done |
| $DEBUGFS -w $IMG < $TMP >& /dev/null |
| |
| echo Writing $SIZE_C bytes to c |
| dd if=/dev/zero of=$TMP bs=$SIZE_C count=1 >& /dev/null |
| $DEBUGFS -w -R "write $TMP c" $IMG |
| fi |
| echo "set_inode_field a mtime 201107040000" > $TMP |
| echo "set_inode_field b mtime 201107050000" >> $TMP |
| if [ -n "$SIZE_C" ]; then |
| echo "set_inode_field c mtime 201107060000" >> $TMP |
| fi |
| $DEBUGFS -w $IMG < $TMP >& /dev/null |
| |
| $FSCK -fy $IMG |
| rm $TMP |
| |