mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-18 04:15:32 +00:00
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <uuid/uuid.h>
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#include "kerncompat.h"
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#include "radix-tree.h"
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#include "ctree.h"
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#include "disk-io.h"
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#include "print-tree.h"
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#include "transaction.h"
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int main(int ac, char **av) {
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struct btrfs_super_block super;
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struct btrfs_root *root;
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struct btrfs_path path;
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struct btrfs_key key;
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struct btrfs_root_item *ri;
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struct btrfs_leaf *leaf;
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struct btrfs_key found_key;
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char uuidbuf[37];
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int ret;
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int slot;
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if (ac != 2) {
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fprintf(stderr, "usage: %s device\n", av[0]);
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exit(1);
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}
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radix_tree_init();
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root = open_ctree(av[1], &super);
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if (!root) {
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fprintf(stderr, "unable to open %s\n", av[1]);
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exit(1);
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}
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printf("root tree\n");
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btrfs_print_tree(root->fs_info->tree_root,
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root->fs_info->tree_root->node);
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printf("dev tree\n");
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btrfs_print_tree(root->fs_info->dev_root,
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root->fs_info->dev_root->node);
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btrfs_init_path(&path);
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key.offset = 0;
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key.objectid = 0;
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key.flags = 0;
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btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
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ret = btrfs_search_slot(NULL, root->fs_info->tree_root,
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&key, &path, 0, 0);
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BUG_ON(ret < 0);
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while(1) {
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leaf = &path.nodes[0]->leaf;
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slot = path.slots[0];
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if (slot >= btrfs_header_nritems(&leaf->header)) {
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ret = btrfs_next_leaf(root, &path);
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if (ret != 0)
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break;
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leaf = &path.nodes[0]->leaf;
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slot = path.slots[0];
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}
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btrfs_disk_key_to_cpu(&found_key,
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&leaf->items[path.slots[0]].key);
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if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
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struct btrfs_buffer *buf;
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ri = btrfs_item_ptr(leaf, path.slots[0],
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struct btrfs_root_item);
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buf = read_tree_block(root->fs_info->tree_root,
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btrfs_root_blocknr(ri));
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switch(found_key.objectid) {
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case BTRFS_ROOT_TREE_OBJECTID:
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printf("root ");
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break;
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case BTRFS_DEV_TREE_OBJECTID:
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printf("dev tree ");
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break;
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case BTRFS_EXTENT_TREE_OBJECTID:
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printf("extent tree ");
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break;
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}
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printf("tree %Lu %Lu %u\n", found_key.objectid,
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found_key.offset, found_key.flags);
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btrfs_print_tree(root, buf);
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}
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path.slots[0]++;
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}
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btrfs_release_path(root, &path);
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printf("total blocks %Lu\n", btrfs_super_total_blocks(&super));
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printf("blocks used %Lu\n", btrfs_super_blocks_used(&super));
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uuidbuf[36] = '\0';
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uuid_unparse(super.fsid, uuidbuf);
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printf("uuid %s\n", uuidbuf);
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return 0;
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}
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