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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
*/
#ifndef __XFS_ITABLE_H__
#define __XFS_ITABLE_H__
/* In-memory representation of a userspace request for batch inode data. */
struct xfs_ibulk {
struct xfs_mount *mp;
struct user_namespace *mnt_userns;
void __user *ubuffer; /* user output buffer */
xfs_ino_t startino; /* start with this inode */
unsigned int icount; /* number of elements in ubuffer */
unsigned int ocount; /* number of records returned */
unsigned int flags; /* see XFS_IBULK_FLAG_* */
};
/* Only iterate within the same AG as startino */
#define XFS_IBULK_SAME_AG (1U << 0)
/* Fill out the bs_extents64 field if set. */
#define XFS_IBULK_NREXT64 (1U << 1)
/*
* Advance the user buffer pointer by one record of the given size. If the
* buffer is now full, return the appropriate error code.
*/
static inline int
xfs_ibulk_advance(
struct xfs_ibulk *breq,
size_t bytes)
{
char __user *b = breq->ubuffer;
breq->ubuffer = b + bytes;
breq->ocount++;
return breq->ocount == breq->icount ? -ECANCELED : 0;
}
/*
* Return stat information in bulk (by-inode) for the filesystem.
*/
/*
* Return codes for the formatter function are 0 to continue iterating, and
* non-zero to stop iterating. Any non-zero value will be passed up to the
* bulkstat/inumbers caller. The special value -ECANCELED can be used to stop
* iteration, as neither bulkstat nor inumbers will ever generate that error
* code on their own.
*/
typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq,
const struct xfs_bulkstat *bstat);
int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1,
const struct xfs_bulkstat *bstat);
typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq,
const struct xfs_inumbers *igrp);
int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter);
void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1,
const struct xfs_inumbers *ig);
#endif /* __XFS_ITABLE_H__ */
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