From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:24864 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753551Ab3AJLfC (ORCPT ); Thu, 10 Jan 2013 06:35:02 -0500 Received: from acsinet22.oracle.com (acsinet22.oracle.com [141.146.126.238]) by userp1040.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id r0ABZ1fd030625 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 10 Jan 2013 11:35:01 GMT Received: from acsmt357.oracle.com (acsmt357.oracle.com [141.146.40.157]) by acsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r0ABZ0l1015798 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 10 Jan 2013 11:35:00 GMT Received: from abhmt110.oracle.com (abhmt110.oracle.com [141.146.116.62]) by acsmt357.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id r0ABZ0Jh022311 for ; Thu, 10 Jan 2013 05:35:00 -0600 From: Anand Jain To: linux-btrfs@vger.kernel.org Subject: [PATCH 05/11] Btrfs-progs: function to get root_info of a subvol Date: Thu, 10 Jan 2013 19:41:17 +0800 Message-Id: <1357818083-15531-6-git-send-email-anand.jain@oracle.com> In-Reply-To: <1357818083-15531-1-git-send-email-anand.jain@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: References: <1357818083-15531-1-git-send-email-anand.jain@oracle.com> 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); -- 1.7.1