return ret;
}
+static int populate_csum(struct btrfs_trans_handle *trans,
+ struct btrfs_root *csum_root, char *buf, u64 start,
+ u64 len)
+{
+ u64 offset = 0;
+ u64 sectorsize;
+ int ret = 0;
+
+ while (offset < len) {
+ sectorsize = csum_root->sectorsize;
+ ret = read_extent_data(csum_root, buf, start + offset,
+ §orsize, 0);
+ if (ret)
+ break;
+ ret = btrfs_csum_file_block(trans, csum_root, start + len,
+ start + offset, buf, sectorsize);
+ if (ret)
+ break;
+ offset += sectorsize;
+ }
+ return ret;
+}
+
+static int fill_csum_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_root *csum_root)
+{
+ struct btrfs_root *extent_root = csum_root->fs_info->extent_root;
+ struct btrfs_path *path;
+ struct btrfs_extent_item *ei;
+ struct extent_buffer *leaf;
+ char *buf;
+ struct btrfs_key key;
+ int ret;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ key.objectid = 0;
+ key.type = BTRFS_EXTENT_ITEM_KEY;
+ key.offset = 0;
+
+ ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0);
+ if (ret < 0) {
+ btrfs_free_path(path);
+ return ret;
+ }
+
+ buf = malloc(csum_root->sectorsize);
+ if (!buf) {
+ btrfs_free_path(path);
+ return -ENOMEM;
+ }
+
+ while (1) {
+ if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) {
+ ret = btrfs_next_leaf(extent_root, path);
+ if (ret < 0)
+ break;
+ if (ret) {
+ ret = 0;
+ break;
+ }
+ }
+ leaf = path->nodes[0];
+
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+ if (key.type != BTRFS_EXTENT_ITEM_KEY) {
+ path->slots[0]++;
+ continue;
+ }
+
+ ei = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_extent_item);
+ if (!(btrfs_extent_flags(leaf, ei) &
+ BTRFS_EXTENT_FLAG_DATA)) {
+ path->slots[0]++;
+ continue;
+ }
+
+ ret = populate_csum(trans, csum_root, buf, key.objectid,
+ key.offset);
+ if (ret)
+ break;
+ path->slots[0]++;
+ }
+
+ btrfs_free_path(path);
+ free(buf);
+ return ret;
+}
+
static struct option long_options[] = {
{ "super", 1, NULL, 's' },
{ "repair", 0, NULL, 0 },
ret = -EIO;
goto close_out;
}
+
+ ret = fill_csum_tree(trans, info->csum_root);
+ if (ret) {
+ fprintf(stderr, "crc refilling failed\n");
+ return -EIO;
+ }
}
/*
* Ok now we commit and run the normal fsck, which will add