diff options
Diffstat (limited to 'utils.c')
| -rw-r--r-- | utils.c | 33 |
1 files changed, 27 insertions, 6 deletions
@@ -46,16 +46,17 @@ static inline int ioctl(int fd, int define, u64 *size) { return 0; } #endif -static u64 reference_root_table[6] = { +static u64 reference_root_table[] = { [1] = BTRFS_ROOT_TREE_OBJECTID, [2] = BTRFS_EXTENT_TREE_OBJECTID, [3] = BTRFS_CHUNK_TREE_OBJECTID, [4] = BTRFS_DEV_TREE_OBJECTID, [5] = BTRFS_FS_TREE_OBJECTID, + [6] = BTRFS_CSUM_TREE_OBJECTID, }; int make_btrfs(int fd, const char *device, const char *label, - u64 blocks[6], u64 num_bytes, u32 nodesize, + u64 blocks[7], u64 num_bytes, u32 nodesize, u32 leafsize, u32 sectorsize, u32 stripesize) { struct btrfs_super_block super; @@ -96,7 +97,7 @@ int make_btrfs(int fd, const char *device, const char *label, btrfs_set_super_root(&super, blocks[1]); btrfs_set_super_chunk_root(&super, blocks[3]); btrfs_set_super_total_bytes(&super, num_bytes); - btrfs_set_super_bytes_used(&super, 5 * leafsize); + btrfs_set_super_bytes_used(&super, 6 * leafsize); btrfs_set_super_sectorsize(&super, sectorsize); btrfs_set_super_leafsize(&super, leafsize); btrfs_set_super_nodesize(&super, nodesize); @@ -112,7 +113,7 @@ int make_btrfs(int fd, const char *device, const char *label, memset(buf->data, 0, leafsize); buf->len = leafsize; btrfs_set_header_bytenr(buf, blocks[1]); - btrfs_set_header_nritems(buf, 3); + btrfs_set_header_nritems(buf, 4); btrfs_set_header_generation(buf, 1); btrfs_set_header_owner(buf, BTRFS_ROOT_TREE_OBJECTID); write_extent_buffer(buf, super.fsid, (unsigned long) @@ -174,6 +175,18 @@ int make_btrfs(int fd, const char *device, const char *label, sizeof(root_item)); nritems++; + itemoff = itemoff - sizeof(root_item); + btrfs_set_root_bytenr(&root_item, blocks[6]); + btrfs_set_disk_key_objectid(&disk_key, BTRFS_CSUM_TREE_OBJECTID); + btrfs_set_item_key(buf, &disk_key, nritems); + btrfs_set_item_offset(buf, btrfs_item_nr(buf, nritems), itemoff); + btrfs_set_item_size(buf, btrfs_item_nr(buf, nritems), + sizeof(root_item)); + write_extent_buffer(buf, &root_item, + btrfs_item_ptr_offset(buf, nritems), + sizeof(root_item)); + nritems++; + csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0); ret = pwrite(fd, buf->data, leafsize, blocks[1]); @@ -193,7 +206,7 @@ int make_btrfs(int fd, const char *device, const char *label, extent_item = btrfs_item_ptr(buf, nritems, struct btrfs_extent_item); btrfs_set_extent_refs(buf, extent_item, 1); nritems++; - for (i = 1; i < 6; i++) { + for (i = 1; i < 7; i++) { BUG_ON(blocks[i] < first_free); BUG_ON(blocks[i] < blocks[i - 1]); @@ -352,7 +365,7 @@ int make_btrfs(int fd, const char *device, const char *label, csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0); ret = pwrite(fd, buf->data, leafsize, blocks[4]); - /* finally create the FS root */ + /* create the FS root */ btrfs_set_header_bytenr(buf, blocks[5]); btrfs_set_header_owner(buf, BTRFS_FS_TREE_OBJECTID); btrfs_set_header_nritems(buf, 0); @@ -360,6 +373,14 @@ int make_btrfs(int fd, const char *device, const char *label, ret = pwrite(fd, buf->data, leafsize, blocks[5]); BUG_ON(ret != leafsize); + /* finally create the csum root */ + btrfs_set_header_bytenr(buf, blocks[6]); + btrfs_set_header_owner(buf, BTRFS_CSUM_TREE_OBJECTID); + btrfs_set_header_nritems(buf, 0); + csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0); + ret = pwrite(fd, buf->data, leafsize, blocks[6]); + BUG_ON(ret != leafsize); + /* and write out the super block */ BUG_ON(sizeof(super) > sectorsize); memset(buf->data, 0, sectorsize); |