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btrfs-progs: improved error handling in btrfs_print_tree

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-09-06 15:55:59 +02:00
parent 26fbf0546d
commit ad44d1eb17
1 changed files with 22 additions and 10 deletions
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32
print-tree.c
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@ -1148,6 +1148,7 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int fol
u32 size;
struct btrfs_disk_key disk_key;
struct btrfs_key key;
struct extent_buffer *next;
if (!eb)
return;
@ -1181,23 +1182,34 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int fol
return;
for (i = 0; i < nr; i++) {
struct extent_buffer *next = read_tree_block(root,
btrfs_node_blockptr(eb, i),
size,
btrfs_node_ptr_generation(eb, i));
next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
btrfs_node_ptr_generation(eb, i));
if (!extent_buffer_uptodate(next)) {
fprintf(stderr, "failed to read %llu in tree %llu\n",
(unsigned long long)btrfs_node_blockptr(eb, i),
(unsigned long long)btrfs_header_owner(eb));
continue;
}
if (btrfs_is_leaf(next) &&
btrfs_header_level(eb) != 1)
BUG();
if (btrfs_header_level(next) !=
btrfs_header_level(eb) - 1)
BUG();
if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
warning(
"eb corrupted: item %d eb level %d next level %d, skipping the rest",
i, btrfs_header_level(next),
btrfs_header_level(eb));
goto out;
}
if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
warning(
"eb corrupted: item %d eb level %d next level %d, skipping the rest",
i, btrfs_header_level(next),
btrfs_header_level(eb));
goto out;
}
btrfs_print_tree(root, next, 1);
free_extent_buffer(next);
}
return;
out:
free_extent_buffer(next);
}