From patchwork Fri Apr 19 15:41:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Behrens X-Patchwork-Id: 2465681 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 4F89FDFF66 for ; Fri, 19 Apr 2013 15:41:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030766Ab3DSPlL (ORCPT ); Fri, 19 Apr 2013 11:41:11 -0400 Received: from xp-ob.rzone.de ([81.169.146.137]:41878 "EHLO xp-ob.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030732Ab3DSPlK (ORCPT ); Fri, 19 Apr 2013 11:41:10 -0400 X-RZG-CLASS-ID: xp Received: from pizpot.store ([192.168.43.236]) by jored.store (jored xp4) (RZmta 31.27 OK) with ESMTP id 6049b1p3JEl7LW for ; Fri, 19 Apr 2013 17:41:06 +0200 (CEST) From: Stefan Behrens To: linux-btrfs@vger.kernel.org Subject: [PATCH 2/5] Btrfs: support printing UUID tree elements Date: Fri, 19 Apr 2013 17:41:03 +0200 Message-Id: <85b4a097a36353848383d0ac0339cb644a1cf2bb.1366384796.git.sbehrens@giantdisaster.de> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This commit adds support to print UUID tree elements to print-tree.c. Signed-off-by: Stefan Behrens --- fs/btrfs/print-tree.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index dc0024f..6e204ee 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -155,6 +155,73 @@ static void print_extent_ref_v0(struct extent_buffer *eb, int slot) } #endif +static void print_uuid_item(struct extent_buffer *l, + struct btrfs_uuid_item *ptr, + u64 item_size) +{ + do { + u64 sub_item_type; + u64 sub_item_len; + u64 subvol_id; + + if (item_size < sizeof(*ptr)) { + printk(KERN_INFO "btrfs: uuid item too short!\n"); + return; + } + sub_item_type = btrfs_uuid_type(l, ptr); + sub_item_len = btrfs_uuid_len(l, ptr); + ptr++; + item_size -= sizeof(*ptr); + if (sub_item_len * 8 > item_size) { + printk(KERN_INFO "btrfs: uuid item too short (2)!\n"); + return; + } + + item_size -= sub_item_len * 8; + switch (sub_item_type) { + case BTRFS_UUID_ITEM_TYPE_SUBVOL: + while (sub_item_len) { + read_extent_buffer(l, &subvol_id, + (unsigned long)ptr, 8); + printk(KERN_INFO "\t\tsubvol_id %llu\n", + (unsigned long long) + le64_to_cpu(subvol_id)); + sub_item_len--; + ptr = (struct btrfs_uuid_item *) + (((char *)ptr) + 8); + } + break; + case BTRFS_UUID_ITEM_TYPE_RECEIVED_SUBVOL: + while (sub_item_len) { + read_extent_buffer(l, &subvol_id, + (unsigned long)ptr, 8); + printk(KERN_INFO "\t\treceived_subvol_id %llu\n", + (unsigned long long) + le64_to_cpu(subvol_id)); + sub_item_len--; + ptr = (struct btrfs_uuid_item *) + (((char *)ptr) + 8); + } + break; + default: + printk(KERN_INFO "\t\tunknown type=%llu, len=8*%llu\n", + (unsigned long long)sub_item_type, + (unsigned long long)sub_item_len); + while (sub_item_len) { + read_extent_buffer(l, &subvol_id, + (unsigned long)ptr, 8); + printk(KERN_INFO "\t\tid %llu\n", + (unsigned long long) + le64_to_cpu(subvol_id)); + sub_item_len--; + ptr = (struct btrfs_uuid_item *) + (((char *)ptr) + 8); + } + break; + } + } while (item_size); +} + void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) { int i; @@ -168,6 +235,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) struct btrfs_extent_data_ref *dref; struct btrfs_shared_data_ref *sref; struct btrfs_dev_extent *dev_extent; + struct btrfs_uuid_item *uuid_item; struct btrfs_key key; struct btrfs_key found_key; @@ -301,6 +369,11 @@ 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: + uuid_item = btrfs_item_ptr(l, i, + struct btrfs_uuid_item); + print_uuid_item(l, uuid_item, btrfs_item_size_nr(l, i)); + break; }; } }