/* calculate how many blocks are needed for data */
data_needed = ext2fs_blocks_count(fs->super);
for (grp = 0; grp < fs->group_desc_count; grp++) {
- data_needed -= calc_group_overhead(fs, grp, old_desc_blocks);
- data_needed -= ext2fs_bg_free_blocks_count(fs, grp);
+ __u32 n = ext2fs_bg_free_blocks_count(fs, grp);
+
+ if (n > EXT2_BLOCKS_PER_GROUP(fs->super))
+ n = EXT2_BLOCKS_PER_GROUP(fs->super);
+ n += calc_group_overhead(fs, grp, old_desc_blocks);
+ if (data_needed < n) {
+ if (flags & RESIZE_DEBUG_MIN_CALC)
+ printf("file system appears inconsistent?!?\n");
+ return ext2fs_blocks_count(fs->super);
+ }
+ data_needed -= n;
}
#ifdef RESIZE2FS_DEBUG
if (flags & RESIZE_DEBUG_MIN_CALC)
--- /dev/null
+mke2fs -q -F -t ext4 -o Linux -b 1024 test.img 32M
+debugfs -w -R "set_bg 1 free_blocks_count 65536" /tmp/foo.img
+resize2fs -P /tmp/foo.img
+Estimated minimum size of the filesystem: 6604
--- /dev/null
+resize2fs -P of a corrupted file system
--- /dev/null
+if ! test -x $RESIZE2FS_EXE -o ! -x $DEBUGFS_EXE; then
+ echo "$test_name: $test_description: skipped (no debugfs/resize2fs)"
+ return 0
+fi
+
+OUT=$test_name.log
+if [ -f $test_dir/expect.gz ]; then
+ EXP=$test_name.tmp
+ gunzip < $test_dir/expect.gz > $EXP1
+else
+ EXP=$test_dir/expect
+fi
+
+echo mke2fs -q -F -t ext4 -o Linux -b 1024 test.img 32M > $OUT.new
+$MKE2FS -q -F -t ext4 -o Linux -b 1024 $TMPFILE 32M >> $OUT.new 2>&1
+
+echo debugfs -w -R \"set_bg 1 free_blocks_count 65536\" /tmp/foo.img >> $OUT.new
+$DEBUGFS -w -R "set_bg 1 free_blocks_count 65536" $TMPFILE > /dev/null 2>&1
+
+if type timeout > /dev/null 2>&1 ; then
+ TIMEOUT="timeout -v 30s"
+else
+ TIMEOUT=
+fi
+
+echo resize2fs -P /tmp/foo.img >> $OUT.new
+$TIMEOUT $RESIZE2FS -P $TMPFILE >> $OUT.new 2>&1
+
+sed -f $cmd_dir/filter.sed < $OUT.new > $OUT
+
+rm -f $TMPFILE $OUT.new
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+ rm -f $test_name.tmp
+fi
+
+unset IMAGE OUT EXP TIMEOUT