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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*/
#ifndef __XFS_IMETA_H__
#define __XFS_IMETA_H__
/* How deep can we nest metadata dirs? */
#define XFS_IMETA_MAX_DEPTH 64
/* Form an imeta path from a simple array of strings. */
#define XFS_IMETA_DEFINE_PATH(name, path) \
const struct xfs_imeta_path name = { \
.im_path = (path), \
.im_depth = ARRAY_SIZE(path), \
}
/* Key for looking up metadata inodes. */
struct xfs_imeta_path {
/* Array of string pointers. */
const char **im_path;
/* Number of strings in path. */
unsigned int im_depth;
};
/* Cleanup widget for metadata inode creation and deletion. */
struct xfs_imeta_end {
/* empty for now */
};
/* Lookup keys for static metadata inodes. */
extern const struct xfs_imeta_path XFS_IMETA_RTBITMAP;
extern const struct xfs_imeta_path XFS_IMETA_RTSUMMARY;
extern const struct xfs_imeta_path XFS_IMETA_USRQUOTA;
extern const struct xfs_imeta_path XFS_IMETA_GRPQUOTA;
extern const struct xfs_imeta_path XFS_IMETA_PRJQUOTA;
int xfs_imeta_lookup(struct xfs_mount *mp, const struct xfs_imeta_path *path,
xfs_ino_t *ino);
int xfs_imeta_create(struct xfs_trans **tpp, const struct xfs_imeta_path *path,
umode_t mode, struct xfs_inode **ipp,
struct xfs_imeta_end *cleanup);
int xfs_imeta_unlink(struct xfs_trans **tpp, const struct xfs_imeta_path *path,
struct xfs_inode *ip, struct xfs_imeta_end *cleanup);
int xfs_imeta_zap(struct xfs_trans **tpp, const struct xfs_imeta_path *path,
struct xfs_imeta_end *cleanup);
void xfs_imeta_end_update(struct xfs_mount *mp, struct xfs_imeta_end *cleanup,
int error);
bool xfs_is_static_meta_ino(struct xfs_mount *mp, xfs_ino_t ino);
int xfs_imeta_mount(struct xfs_mount *mp);
unsigned int xfs_imeta_create_space_res(struct xfs_mount *mp);
unsigned int xfs_imeta_unlink_space_res(struct xfs_mount *mp);
/* Must be implemented by the libxfs client */
int xfs_imeta_iget(struct xfs_mount *mp, xfs_ino_t ino, unsigned char ftype,
struct xfs_inode **ipp);
void xfs_imeta_irele(struct xfs_inode *ip);
#endif /* __XFS_IMETA_H__ */
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