forked from Minki/linux
107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
#include <stdio.h>
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#include <stdlib.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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void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
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{
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int i;
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u32 nr = btrfs_header_nritems(&l->header);
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struct btrfs_item *item;
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struct btrfs_extent_item *ei;
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struct btrfs_root_item *ri;
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struct btrfs_dir_item *di;
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u32 type;
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u32 namelen;
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printf("leaf %Lu total ptrs %d free space %d\n",
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btrfs_header_blocknr(&l->header), nr,
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btrfs_leaf_free_space(root, l));
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fflush(stdout);
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for (i = 0 ; i < nr ; i++) {
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item = l->items + i;
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type = btrfs_disk_key_type(&item->key);
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printf("\titem %d key (%Lu %Lu %u) itemoff %d itemsize %d\n",
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i,
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btrfs_disk_key_objectid(&item->key),
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btrfs_disk_key_offset(&item->key),
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btrfs_disk_key_flags(&item->key),
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btrfs_item_offset(item),
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btrfs_item_size(item));
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switch (type) {
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case BTRFS_INODE_ITEM_KEY:
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break;
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case BTRFS_DIR_ITEM_KEY:
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namelen = btrfs_item_size(l->items + i) - sizeof(*di);
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di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
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printf("\t\tdir oid %Lu flags %u type %u\n",
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btrfs_dir_objectid(di),
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btrfs_dir_flags(di),
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btrfs_dir_type(di));
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printf("\t\tname %.*s\n",
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namelen, (char *)(di + 1));
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break;
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case BTRFS_ROOT_ITEM_KEY:
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ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
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printf("\t\troot data blocknr %Lu refs %u\n",
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btrfs_root_blocknr(ri), btrfs_root_refs(ri));
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break;
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case BTRFS_EXTENT_ITEM_KEY:
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ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
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printf("\t\textent data refs %u owner %Lu\n",
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btrfs_extent_refs(ei), btrfs_extent_owner(ei));
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break;
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case BTRFS_STRING_ITEM_KEY:
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printf("\t\titem data %.*s\n", btrfs_item_size(item),
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btrfs_leaf_data(l) + btrfs_item_offset(item));
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break;
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};
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fflush(stdout);
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}
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}
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void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
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{
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int i;
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u32 nr;
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struct btrfs_node *c;
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if (!t)
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return;
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c = &t->node;
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nr = btrfs_header_nritems(&c->header);
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if (btrfs_is_leaf(c)) {
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btrfs_print_leaf(root, (struct btrfs_leaf *)c);
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return;
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}
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printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
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btrfs_header_level(&c->header), nr,
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(u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
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fflush(stdout);
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for (i = 0; i < nr; i++) {
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printf("\tkey %d (%Lu %Lu %u) block %Lu\n",
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i,
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c->ptrs[i].key.objectid,
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c->ptrs[i].key.offset,
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c->ptrs[i].key.flags,
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btrfs_node_blockptr(c, i));
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fflush(stdout);
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}
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for (i = 0; i < nr; i++) {
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struct btrfs_buffer *next_buf = read_tree_block(root,
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btrfs_node_blockptr(c, i));
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struct btrfs_node *next = &next_buf->node;
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if (btrfs_is_leaf(next) &&
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btrfs_header_level(&c->header) != 1)
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BUG();
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if (btrfs_header_level(&next->header) !=
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btrfs_header_level(&c->header) - 1)
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BUG();
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btrfs_print_tree(root, next_buf);
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btrfs_block_release(root, next_buf);
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}
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}
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