mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-12 09:26:31 +00:00
f9b0da8e78
This reverts commit 83ab92512e.
The commit removed some old code that seemed to be unused but this
actually broke snapper. Revert the changes completely to the v6.3 ABI
level.
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1212217
Issue: #672
Signed-off-by: David Sterba <dsterba@suse.com>
100 lines
2.6 KiB
C
100 lines
2.6 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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/*
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* Compatibility code for kernels < 3.12; the UUID tree is not available there
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* and we have to do the slow search. This should be deprecated someday.
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*/
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#define BTRFS_COMPAT_SEND_NO_UUID_TREE 1
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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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#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
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struct rb_node rb_root_id_node;
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struct rb_node rb_local_node;
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struct rb_node rb_received_node;
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struct rb_node rb_path_node;
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#endif
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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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#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
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int uuid_tree_existed;
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struct rb_root root_id_subvols;
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struct rb_root local_subvols;
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struct rb_root received_subvols;
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struct rb_root path_subvols;
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#endif
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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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