1 #define _XOPEN_SOURCE 500
8 #include "kerncompat.h"
9 #include "radix-tree.h"
15 struct ctree_root_info info[2];
16 struct leaf empty_leaf;
18 struct extent_item extent_item;
21 memset(info, 0, sizeof(info));
24 info[0].tree_root = 17;
25 info[0].alloc_extent.blocknr = 0;
26 info[0].alloc_extent.num_blocks = 20;
27 /* 0-17 are used (inclusive) */
28 info[0].alloc_extent.num_used = 18;
32 info[1].tree_root = 64;
33 info[1].alloc_extent.blocknr = 64;
34 info[1].alloc_extent.num_blocks = 8;
35 info[1].alloc_extent.num_used = 1;
36 ret = pwrite(fd, info, sizeof(info),
37 CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
38 if (ret != sizeof(info))
40 memset(&empty_leaf, 0, sizeof(empty_leaf));
41 empty_leaf.header.parentid = 1;
42 empty_leaf.header.blocknr = 17;
43 ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 17 * CTREE_BLOCKSIZE);
44 if (ret != sizeof(empty_leaf))
47 empty_leaf.header.parentid = 2;
48 empty_leaf.header.blocknr = 64;
49 empty_leaf.header.nritems = 2;
50 item.key.objectid = 0;
53 item.offset = LEAF_DATA_SIZE - sizeof(struct extent_item);
54 item.size = sizeof(struct extent_item);
56 extent_item.owner = 1;
57 memcpy(empty_leaf.items, &item, sizeof(item));
58 memcpy(empty_leaf.data + item.offset, &extent_item, item.size);
59 item.key.objectid = 64;
61 item.offset = LEAF_DATA_SIZE - sizeof(struct extent_item) * 2;
62 extent_item.owner = 2;
63 memcpy(empty_leaf.items + 1, &item, sizeof(item));
64 memcpy(empty_leaf.data + item.offset, &extent_item, item.size);
65 ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 64 * CTREE_BLOCKSIZE);
66 if (ret != sizeof(empty_leaf))