qgroup.h

   1 /*
   2  * Copyright (C) 2012 STRATO.  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
  19 #ifndef _BTRFS_QGROUP_H
  20 #define _BTRFS_QGROUP_H
  21
  22 #include "ioctl.h"
  23 #include "kerncompat.h"
  24
  25 struct btrfs_qgroup;
  26
  27 typedef int (*btrfs_qgroup_filter_func)(struct btrfs_qgroup *, u64);
  28
  29 struct btrfs_qgroup_filter {
  30         btrfs_qgroup_filter_func filter_func;
  31         u64 data;
  32 };
  33
  34 struct btrfs_qgroup_filter_set {
  35         int total;
  36         int nfilters;
  37         struct btrfs_qgroup_filter filters[0];
  38 };
  39
  40 enum btrfs_qgroup_column_enum {
  41         BTRFS_QGROUP_QGROUPID,
  42         BTRFS_QGROUP_RFER,
  43         BTRFS_QGROUP_EXCL,
  44         BTRFS_QGROUP_MAX_RFER,
  45         BTRFS_QGROUP_MAX_EXCL,
  46         BTRFS_QGROUP_PARENT,
  47         BTRFS_QGROUP_CHILD,
  48         BTRFS_QGROUP_ALL,
  49 };
  50
  51 enum btrfs_qgroup_filter_enum {
  52         BTRFS_QGROUP_FILTER_PARENT,
  53         BTRFS_QGROUP_FILTER_ALL_PARENT,
  54         BTRFS_QGROUP_FILTER_MAX,
  55 };
  56
  57 u64 btrfs_get_path_rootid(int fd);
  58 int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *);
  59 void btrfs_qgroup_setup_print_column(enum btrfs_qgroup_column_enum column);
  60 struct btrfs_qgroup_filter_set *btrfs_qgroup_alloc_filter_set(void);
  61 void btrfs_qgroup_free_filter_set(struct btrfs_qgroup_filter_set *filter_set);
  62 int btrfs_qgroup_setup_filter(struct btrfs_qgroup_filter_set **filter_set,
  63                               enum btrfs_qgroup_filter_enum, u64 data);
  64 u64 parse_qgroupid(char *p);
  65 int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
  66 int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char *arg);
  67 int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
  68                             int type);
  69
  70 #endif