1ebfc031cb
The only mechanism we have in the progs for searching qgroups is to load all of them and filter the results. This works for qgroup show but to add quota information to 'btrfs subvoluem show' it's pretty wasteful. This patch splits out setting up the search and performing the search so we can search for a single qgroupid more easily. Since TREE_SEARCH will give results that don't strictly match the search terms, we add a filter to match only the results we care about. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/*
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* Copyright (C) 2012 STRATO. 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_QGROUP_H__
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#define __BTRFS_QGROUP_H__
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#include "kerncompat.h"
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#include "ioctl.h"
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struct btrfs_qgroup;
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typedef int (*btrfs_qgroup_filter_func)(struct btrfs_qgroup *, u64);
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typedef int (*btrfs_qgroup_comp_func)(struct btrfs_qgroup *,
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struct btrfs_qgroup *, int);
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struct btrfs_qgroup_filter {
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btrfs_qgroup_filter_func filter_func;
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u64 data;
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};
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struct btrfs_qgroup_comparer {
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btrfs_qgroup_comp_func comp_func;
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int is_descending;
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};
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struct btrfs_qgroup_filter_set {
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int total;
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int nfilters;
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struct btrfs_qgroup_filter filters[0];
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};
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struct btrfs_qgroup_comparer_set {
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int total;
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int ncomps;
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struct btrfs_qgroup_comparer comps[0];
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};
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enum btrfs_qgroup_column_enum {
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BTRFS_QGROUP_QGROUPID,
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BTRFS_QGROUP_RFER,
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BTRFS_QGROUP_EXCL,
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BTRFS_QGROUP_MAX_RFER,
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BTRFS_QGROUP_MAX_EXCL,
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BTRFS_QGROUP_PARENT,
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BTRFS_QGROUP_CHILD,
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BTRFS_QGROUP_ALL,
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};
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enum btrfs_qgroup_comp_enum {
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BTRFS_QGROUP_COMP_QGROUPID,
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BTRFS_QGROUP_COMP_RFER,
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BTRFS_QGROUP_COMP_EXCL,
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BTRFS_QGROUP_COMP_MAX_RFER,
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BTRFS_QGROUP_COMP_MAX_EXCL,
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BTRFS_QGROUP_COMP_MAX
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};
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enum btrfs_qgroup_filter_enum {
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BTRFS_QGROUP_FILTER_PARENT,
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BTRFS_QGROUP_FILTER_ALL_PARENT,
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BTRFS_QGROUP_FILTER_MAX,
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};
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struct btrfs_qgroup_info {
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u64 generation;
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u64 referenced;
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u64 referenced_compressed;
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u64 exclusive;
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u64 exclusive_compressed;
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};
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struct btrfs_qgroup_stats {
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u64 qgroupid;
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struct btrfs_qgroup_info info;
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struct btrfs_qgroup_limit limit;
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};
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int btrfs_qgroup_parse_sort_string(const char *opt_arg,
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struct btrfs_qgroup_comparer_set **comps);
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int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *,
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struct btrfs_qgroup_comparer_set *);
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void btrfs_qgroup_setup_print_column(enum btrfs_qgroup_column_enum column);
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void btrfs_qgroup_setup_units(unsigned unit_mode);
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struct btrfs_qgroup_filter_set *btrfs_qgroup_alloc_filter_set(void);
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int btrfs_qgroup_setup_filter(struct btrfs_qgroup_filter_set **filter_set,
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enum btrfs_qgroup_filter_enum, u64 data);
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struct btrfs_qgroup_comparer_set *btrfs_qgroup_alloc_comparer_set(void);
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int btrfs_qgroup_setup_comparer(struct btrfs_qgroup_comparer_set **comp_set,
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enum btrfs_qgroup_comp_enum comparer,
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int is_descending);
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int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
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int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char *arg);
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int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
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int type);
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int btrfs_qgroup_query(int fd, u64 qgroupid, struct btrfs_qgroup_stats *stats);
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#endif
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