1 files changed, 32 insertions, 1 deletions

diff --git a/qgroup.h b/qgroup.h
index 5fcdd8ab..653cf1c7 100644
--- a/qgroup.h
+++ b/qgroup.h
@@ -25,18 +25,32 @@
 struct btrfs_qgroup;
 
 typedef int (*btrfs_qgroup_filter_func)(struct btrfs_qgroup *, u64);
+typedef int (*btrfs_qgroup_comp_func)(struct btrfs_qgroup *,
+				      struct btrfs_qgroup *, int);
+
 
 struct btrfs_qgroup_filter {
 	btrfs_qgroup_filter_func filter_func;
 	u64 data;
 };
 
+struct btrfs_qgroup_comparer {
+	btrfs_qgroup_comp_func comp_func;
+	int is_descending;
+};
+
 struct btrfs_qgroup_filter_set {
 	int total;
 	int nfilters;
 	struct btrfs_qgroup_filter filters[0];
 };
 
+struct btrfs_qgroup_comparer_set {
+	int total;
+	int ncomps;
+	struct btrfs_qgroup_comparer comps[0];
+};
+
 enum btrfs_qgroup_column_enum {
 	BTRFS_QGROUP_QGROUPID,
 	BTRFS_QGROUP_RFER,
@@ -48,19 +62,36 @@ enum btrfs_qgroup_column_enum {
 	BTRFS_QGROUP_ALL,
 };
 
+enum btrfs_qgroup_comp_enum {
+	BTRFS_QGROUP_COMP_QGROUPID,
+	BTRFS_QGROUP_COMP_RFER,
+	BTRFS_QGROUP_COMP_EXCL,
+	BTRFS_QGROUP_COMP_MAX_RFER,
+	BTRFS_QGROUP_COMP_MAX_EXCL,
+	BTRFS_QGROUP_COMP_MAX
+};
+
 enum btrfs_qgroup_filter_enum {
 	BTRFS_QGROUP_FILTER_PARENT,
 	BTRFS_QGROUP_FILTER_ALL_PARENT,
 	BTRFS_QGROUP_FILTER_MAX,
 };
 
+int btrfs_qgroup_parse_sort_string(char *opt_arg,
+				struct btrfs_qgroup_comparer_set **comps);
 u64 btrfs_get_path_rootid(int fd);
-int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *);
+int btrfs_show_qgroups(int fd, struct btrfs_qgroup_filter_set *,
+		       struct btrfs_qgroup_comparer_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);
+struct btrfs_qgroup_comparer_set *btrfs_qgroup_alloc_comparer_set(void);
+void btrfs_qgroup_free_comparer_set(struct btrfs_qgroup_comparer_set *comp_set);
+int btrfs_qgroup_setup_comparer(struct btrfs_qgroup_comparer_set **comp_set,
+				enum btrfs_qgroup_comp_enum comparer,
+				int is_descending);
 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);