From cee3aa138724fd354acd5947d96a3d295b606899 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Thu, 11 Sep 2025 17:36:28 +0100 Subject: [PATCH] btrfs: print-tree: print information about inode ref items Currently we ignore inode ref items, we just print their key, item offset in the leaf and their size, no information about their content like the index number, name length and name. Improve on this by printing the index and name length in the same format as btrfs-progs. Note that we don't print the name, as that would require some processing and escaping like we do in btrfs-progs, and that could expose sensitive information for some users in case they share their dmesg/syslog and it contains a leaf dump. So for now leave names out. Reviewed-by: Qu Wenruo Reviewed-by: Johannes Thumshirn Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/print-tree.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index 5ae611cb3f2e8..7a7156257d593 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -280,6 +280,23 @@ static void print_dir_item(const struct extent_buffer *eb, int i) } } +static void print_inode_ref_item(const struct extent_buffer *eb, int i) +{ + const u32 size = btrfs_item_size(eb, i); + struct btrfs_inode_ref *ref = btrfs_item_ptr(eb, i, struct btrfs_inode_ref); + u32 cur = 0; + + while (cur < size) { + const u64 index = btrfs_inode_ref_index(eb, ref); + const u32 name_len = btrfs_inode_ref_name_len(eb, ref); + const u32 len = sizeof(*ref) + name_len; + + pr_info("\t\tindex %llu name_len %u\n", index, name_len); + ref = (struct btrfs_inode_ref *)((char *)ref + len); + cur += len; + } +} + void btrfs_print_leaf(const struct extent_buffer *l) { struct btrfs_fs_info *fs_info; @@ -314,6 +331,9 @@ void btrfs_print_leaf(const struct extent_buffer *l) case BTRFS_INODE_ITEM_KEY: print_inode_item(l, i); break; + case BTRFS_INODE_REF_KEY: + print_inode_ref_item(l, i); + break; case BTRFS_DIR_ITEM_KEY: case BTRFS_DIR_INDEX_KEY: case BTRFS_XATTR_ITEM_KEY: -- 2.47.3