mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
synced 2024-12-12 05:33:25 +08:00
83ab92512e
Since kernel 3.12, any btrfs mounted by a kernel would have an UUID
tree created, to record all the UUID of its subvolumes.
Without UUID tree, libbtrfs send functionality has to go through all the
subvolumes seen so far, and record those subvolumes' UUID internally so
that libbtrfs send can locate a desired subvolume.
Since commit 194b90aa2c ("btrfs-progs: libbtrfs: remove declarations
without exports in send-utils") we're deprecating this old interface
already, meaning deprecated users won't be able to build its own
subvolume list already.
And we received no error report on this so far. So let's finish the
cleanup by removing the support for fs without an UUID tree.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/*
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* Copyright (C) 2012 Alexander Block. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_SEND_UTILS_H__
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#define __BTRFS_SEND_UTILS_H__
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#if BTRFS_FLAT_INCLUDES
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#include "libbtrfs/kerncompat.h"
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#include <stddef.h>
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#include "libbtrfs/ctree.h"
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#include "kernel-lib/rbtree_types.h"
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#else
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#include <btrfs/kerncompat.h>
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#include <stddef.h>
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#include <btrfs/ctree.h>
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#include <btrfs/rbtree_types.h>
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#endif /* BTRFS_FLAT_INCLUDES */
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum subvol_search_type {
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subvol_search_by_root_id,
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subvol_search_by_uuid,
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subvol_search_by_received_uuid,
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subvol_search_by_path,
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};
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struct subvol_info {
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u64 root_id;
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u8 uuid[BTRFS_UUID_SIZE];
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u8 parent_uuid[BTRFS_UUID_SIZE];
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u8 received_uuid[BTRFS_UUID_SIZE];
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u64 ctransid;
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u64 otransid;
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u64 stransid;
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u64 rtransid;
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char *path;
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};
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struct subvol_uuid_search {
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int mnt_fd;
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};
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int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s);
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/*
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* Search for a subvolume by given type (received uuid, root id, path), returns
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* pointer to newly allocated struct subvol_info or NULL in case it's not found
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* or there was another error.
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*/
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struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s,
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u64 root_id, const u8 *uuid, u64 transid,
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const char *path,
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enum subvol_search_type type);
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int btrfs_subvolid_resolve(int fd, char *path, size_t path_len, u64 subvol_id);
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#ifdef __cplusplus
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}
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#endif
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#endif
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