diff options
| author | Stefan Behrens | 2013-08-15 17:11:18 +0200 |
|---|---|---|
| committer | Chris Mason | 2013-09-01 08:15:53 -0400 |
| commit | 8f8ae8e213300378d2506b68d581c80d9dfd2faf (patch) | |
| tree | fd3b7f3c5c6a0a4542b32ebc24dd672194893dc2 | |
| parent | 07b30a49dac4f60a6c4b0b3938bd6f45affb9455 (diff) | |
Btrfs: support printing UUID tree elements
This commit adds support to print UUID tree elements to print-tree.c.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| -rw-r--r-- | fs/btrfs/print-tree.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index fe7bf4a12568..32022f3f169b 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -155,6 +155,25 @@ static void print_extent_ref_v0(struct extent_buffer *eb, int slot) } #endif +static void print_uuid_item(struct extent_buffer *l, unsigned long offset, + u32 item_size) +{ + if (!IS_ALIGNED(item_size, sizeof(u64))) { + pr_warn("btrfs: uuid item with illegal size %lu!\n", + (unsigned long)item_size); + return; + } + while (item_size) { + __le64 subvol_id; + + read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id)); + printk(KERN_INFO "\t\tsubvol_id %llu\n", + (unsigned long long)le64_to_cpu(subvol_id)); + item_size -= sizeof(u64); + offset += sizeof(u64); + } +} + void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) { int i; @@ -301,6 +320,11 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) case BTRFS_DEV_REPLACE_KEY: printk(KERN_INFO "\t\tdev replace\n"); break; + case BTRFS_UUID_KEY_SUBVOL: + case BTRFS_UUID_KEY_RECEIVED_SUBVOL: + print_uuid_item(l, btrfs_item_ptr_offset(l, i), + btrfs_item_size_nr(l, i)); + break; }; } } |