From patchwork Fri Dec 28 03:12:59 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 1914281 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 C14F7DF2A2 for ; Fri, 28 Dec 2012 03:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753142Ab2L1DHC (ORCPT ); Thu, 27 Dec 2012 22:07:02 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:37558 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753244Ab2L1DG6 (ORCPT ); Thu, 27 Dec 2012 22:06:58 -0500 Received: from ucsinet21.oracle.com (ucsinet21.oracle.com [156.151.31.93]) by aserp1040.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id qBS36upg010138 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 28 Dec 2012 03:06:57 GMT Received: from acsmt358.oracle.com (acsmt358.oracle.com [141.146.40.158]) by ucsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id qBS36uYJ013320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 28 Dec 2012 03:06:56 GMT Received: from abhmt116.oracle.com (abhmt116.oracle.com [141.146.116.68]) by acsmt358.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id qBS36tHM023106 for ; Thu, 27 Dec 2012 21:06:55 -0600 Received: from localhost.localdomain (/10.186.101.18) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 27 Dec 2012 19:06:55 -0800 From: Anand jain To: linux-btrfs@vger.kernel.org Subject: [PATCH 5/8] Btrfs-progs: function to get root_info of a subvol Date: Fri, 28 Dec 2012 11:12:59 +0800 Message-Id: <1356664382-24423-6-git-send-email-Anand.Jain@oracle.com> X-Mailer: git-send-email 1.7.7 In-Reply-To: <1356664382-24423-1-git-send-email-Anand.Jain@oracle.com> References: <1356664382-24423-1-git-send-email-Anand.Jain@oracle.com> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Anand Jain Signed-off-by: Anand Jain --- btrfs-list.c | 37 +++++++++++++++++++++++++++++++++++++ btrfs-list.h | 1 + 2 files changed, 38 insertions(+), 0 deletions(-) diff --git a/btrfs-list.c b/btrfs-list.c index 1851f3e..cb458f1 100644 --- a/btrfs-list.c +++ b/btrfs-list.c @@ -1455,6 +1455,43 @@ int btrfs_list_subvols_print(int fd, struct btrfs_list_filter_set *filter_set, return 0; } +int btrfs_get_subvol(int fd, struct root_info *the_ri) +{ + int ret = -1; + struct root_lookup rl; + struct rb_node *rbn; + struct root_info *ri; + u64 top_id = btrfs_list_get_path_rootid(fd); + + if (btrfs_list_subvols(fd, &rl)) + return 13; + + rbn = rb_first(&rl.root); + while(rbn) { + ri = rb_entry(rbn, struct root_info, rb_node); + resolve_root(&rl, ri, top_id); + if (!comp_entry_with_path(the_ri, ri, 0)) { + memcpy(the_ri, ri, offsetof(struct root_info, path)); + if (ri->path) + the_ri->path = strdup(ri->path); + else + the_ri->path = NULL; + if (ri->name) + the_ri->name = strdup(ri->name); + else + the_ri->name = NULL; + if (ri->full_path) + the_ri->full_path = strdup(ri->full_path); + else + the_ri->name = NULL; + ret = 0; + } + rbn = rb_next(rbn); + } + __free_all_subvolumn(&rl); + return ret; +} + static int print_one_extent(int fd, struct btrfs_ioctl_search_header *sh, struct btrfs_file_extent_item *item, u64 found_gen, u64 *cache_dirid, diff --git a/btrfs-list.h b/btrfs-list.h index 3b7b680..580d4d1 100644 --- a/btrfs-list.h +++ b/btrfs-list.h @@ -151,3 +151,4 @@ int btrfs_list_find_updated_files(int fd, u64 root_id, u64 oldest_gen); int btrfs_list_get_default_subvolume(int fd, u64 *default_id); char *btrfs_list_path_for_root(int fd, u64 root); u64 btrfs_list_get_path_rootid(int fd); +int btrfs_get_subvol(int fd, struct root_info *the_ri);