mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-15 02:45:44 +00:00
83ccf08509
Some users complaint that with latest btrfs-progs, they will fail to use send/receive. The problem is new tool will try to use uuid tree while it dosen't work on older kernel. Now we first check if we support uuid tree, if not we fall into normal search as previous way.i copy most of codes from Alexander Block's previous codes and did some adjustments to make it work. Signed-off-by: Alexander Block <ablock84@googlemail.com> Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
87 lines
2.2 KiB
C
87 lines
2.2 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 SEND_UTILS_H_
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#define SEND_UTILS_H_
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#if BTRFS_FLAT_INCLUDES
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#include "ctree.h"
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#include "rbtree.h"
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#else
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#include <btrfs/ctree.h>
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#include <btrfs/rbtree.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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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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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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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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};
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int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s);
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void subvol_uuid_search_finit(struct subvol_uuid_search *s);
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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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void subvol_uuid_search_add(struct subvol_uuid_search *s,
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struct subvol_info *si);
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int btrfs_subvolid_resolve(int fd, char *path, size_t path_len, u64 subvol_id);
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char *path_cat(const char *p1, const char *p2);
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char *path_cat3(const char *p1, const char *p2, const char *p3);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SEND_UTILS_H_ */
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