btrfs-progs/qgroup.h
Wang Shilong d118b9490b Btrfs-progs: list all qgroups impact given path(exclude ancestral qgroups)
This patch introduces '-f' option which can help you filter the qgroups
by the path name, you may use it like:

	btrfs qgroup show -f <path>
For example:

                         qgroupid(2/0)
                          /     \
                         /       \
                        qgroupid(1/0)
                        /         \
                       /           \
                      /             \
                  qgroupid(0/1)   qgroupid(0/2)
                  sub1              sub2
                  /  \
                 /    \
		dir1  file1

If we use the command:
	btrfs qgroup show -f sub1/dir1
The result will output
	0/1	--	--

'-f' option helps you list all qgroups impact given path.
(exclude ancestral qgroups)

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-10-16 08:23:12 -04:00

71 lines
2.1 KiB
C

/*
* Copyright (C) 2012 STRATO. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef _BTRFS_QGROUP_H
#define _BTRFS_QGROUP_H
#include "ioctl.h"
#include "kerncompat.h"
struct btrfs_qgroup;
typedef int (*btrfs_qgroup_filter_func)(struct btrfs_qgroup *, u64);
struct btrfs_qgroup_filter {
btrfs_qgroup_filter_func filter_func;
u64 data;
};
struct btrfs_qgroup_filter_set {
int total;
int nfilters;
struct btrfs_qgroup_filter filters[0];
};
enum btrfs_qgroup_column_enum {
BTRFS_QGROUP_QGROUPID,
BTRFS_QGROUP_RFER,
BTRFS_QGROUP_EXCL,
BTRFS_QGROUP_MAX_RFER,
BTRFS_QGROUP_MAX_EXCL,
BTRFS_QGROUP_PARENT,
BTRFS_QGROUP_CHILD,
BTRFS_QGROUP_ALL,
};
enum btrfs_qgroup_filter_enum {
BTRFS_QGROUP_FILTER_PARENT,
BTRFS_QGROUP_FILTER_ALL_PARENT,
BTRFS_QGROUP_FILTER_MAX,
};
u64 btrfs_get_path_rootid(int fd);
int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *);
void btrfs_qgroup_setup_print_column(enum btrfs_qgroup_column_enum column);
struct btrfs_qgroup_filter_set *btrfs_qgroup_alloc_filter_set(void);
void btrfs_qgroup_free_filter_set(struct btrfs_qgroup_filter_set *filter_set);
int btrfs_qgroup_setup_filter(struct btrfs_qgroup_filter_set **filter_set,
enum btrfs_qgroup_filter_enum, u64 data);
u64 parse_qgroupid(char *p);
int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char *arg);
int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
int type);
#endif