send-utils.h

   1 /*
   2  * Copyright (C) 2012 Alexander Block.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18 #ifndef SEND_UTILS_H_
  19 #define SEND_UTILS_H_
  20
  21 #include "ctree.h"
  22 #include "rbtree.h"
  23
  24 enum subvol_search_type {
  25         subvol_search_by_root_id,
  26         subvol_search_by_uuid,
  27         subvol_search_by_received_uuid,
  28         subvol_search_by_path,
  29 };
  30
  31 struct subvol_info {
  32         struct rb_node rb_root_id_node;
  33         struct rb_node rb_local_node;
  34         struct rb_node rb_received_node;
  35         struct rb_node rb_path_node;
  36         u64 root_id;
  37         u8 uuid[BTRFS_UUID_SIZE];
  38         u8 parent_uuid[BTRFS_UUID_SIZE];
  39         u8 received_uuid[BTRFS_UUID_SIZE];
  40         u64 ctransid;
  41         u64 otransid;
  42         u64 stransid;
  43         u64 rtransid;
  44
  45         char *path;
  46 };
  47
  48 struct subvol_uuid_search {
  49         struct rb_root root_id_subvols;
  50         struct rb_root local_subvols;
  51         struct rb_root received_subvols;
  52         struct rb_root path_subvols;
  53 };
  54
  55 int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s);
  56 struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s,
  57                                        u64 root_id, const u8 *uuid, u64 transid,
  58                                        const char *path,
  59                                        enum subvol_search_type type);
  60 void subvol_uuid_search_add(struct subvol_uuid_search *s,
  61                             struct subvol_info *si);
  62
  63
  64
  65 char *path_cat(const char *p1, const char *p2);
  66 char *path_cat3(const char *p1, const char *p2, const char *p3);
  67
  68
  69 #endif /* SEND_UTILS_H_ */