69 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.4 */5#ifndef __XFS_ITABLE_H__6#define __XFS_ITABLE_H__7 8/* In-memory representation of a userspace request for batch inode data. */9struct xfs_ibulk {10 struct xfs_mount *mp;11 struct mnt_idmap *idmap;12 void __user *ubuffer; /* user output buffer */13 xfs_ino_t startino; /* start with this inode */14 unsigned int icount; /* number of elements in ubuffer */15 unsigned int ocount; /* number of records returned */16 unsigned int flags; /* see XFS_IBULK_FLAG_* */17};18 19/* Only iterate within the same AG as startino */20#define XFS_IBULK_SAME_AG (1U << 0)21 22/* Fill out the bs_extents64 field if set. */23#define XFS_IBULK_NREXT64 (1U << 1)24 25/*26 * Advance the user buffer pointer by one record of the given size. If the27 * buffer is now full, return the appropriate error code.28 */29static inline int30xfs_ibulk_advance(31 struct xfs_ibulk *breq,32 size_t bytes)33{34 char __user *b = breq->ubuffer;35 36 breq->ubuffer = b + bytes;37 breq->ocount++;38 return breq->ocount == breq->icount ? -ECANCELED : 0;39}40 41/*42 * Return stat information in bulk (by-inode) for the filesystem.43 */44 45/*46 * Return codes for the formatter function are 0 to continue iterating, and47 * non-zero to stop iterating. Any non-zero value will be passed up to the48 * bulkstat/inumbers caller. The special value -ECANCELED can be used to stop49 * iteration, as neither bulkstat nor inumbers will ever generate that error50 * code on their own.51 */52 53typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq,54 const struct xfs_bulkstat *bstat);55 56int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);57int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);58void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1,59 const struct xfs_bulkstat *bstat);60 61typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq,62 const struct xfs_inumbers *igrp);63 64int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter);65void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1,66 const struct xfs_inumbers *ig);67 68#endif /* __XFS_ITABLE_H__ */69