linux-brain/fs/btrfs/export.h
Marcos Paulo de Souza 038580b1f5 btrfs: export helpers for subvolume name/id resolution
[ Upstream commit c0c907a47dccf2cf26251a8fb4a8e7a3bf79ce84 ]

The functions will be used outside of export.c and super.c to allow
resolving subvolume name from a given id, eg. for subvolume deletion by
id ioctl.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ split from the next patch ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-26 10:40:49 +02:00

27 lines
533 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BTRFS_EXPORT_H
#define BTRFS_EXPORT_H
#include <linux/exportfs.h>
extern const struct export_operations btrfs_export_ops;
struct btrfs_fid {
u64 objectid;
u64 root_objectid;
u32 gen;
u64 parent_objectid;
u32 parent_gen;
u64 parent_root_objectid;
} __attribute__ ((packed));
struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
u64 root_objectid, u32 generation,
int check_generation);
struct dentry *btrfs_get_parent(struct dentry *child);
#endif