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2810bd6840
Create a new ibulk structure incore to help us deal with bulk inode stat state tracking and then convert the bulkstat code to use the new iwalk iterator. This disentangles inode walking from bulk stat control for simpler code and enables us to isolate the formatter functions to the ioctl handling code. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
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*/
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#ifndef __XFS_ITABLE_H__
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#define __XFS_ITABLE_H__
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/* In-memory representation of a userspace request for batch inode data. */
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struct xfs_ibulk {
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struct xfs_mount *mp;
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void __user *ubuffer; /* user output buffer */
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xfs_ino_t startino; /* start with this inode */
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unsigned int icount; /* number of elements in ubuffer */
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unsigned int ocount; /* number of records returned */
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};
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/* Return value that means we want to abort the walk. */
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#define XFS_IBULK_ABORT (XFS_IWALK_ABORT)
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/*
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* Advance the user buffer pointer by one record of the given size. If the
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* buffer is now full, return the appropriate error code.
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*/
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static inline int
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xfs_ibulk_advance(
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struct xfs_ibulk *breq,
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size_t bytes)
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{
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char __user *b = breq->ubuffer;
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breq->ubuffer = b + bytes;
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breq->ocount++;
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return breq->ocount == breq->icount ? XFS_IBULK_ABORT : 0;
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}
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/*
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* Return stat information in bulk (by-inode) for the filesystem.
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*/
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typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq,
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const struct xfs_bstat *bstat);
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int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
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int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
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typedef int (*inumbers_fmt_pf)(
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void __user *ubuffer, /* buffer to write to */
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const xfs_inogrp_t *buffer, /* buffer to read from */
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long count, /* # of elements to read */
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long *written); /* # of bytes written */
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int
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xfs_inumbers_fmt(
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void __user *ubuffer, /* buffer to write to */
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const xfs_inogrp_t *buffer, /* buffer to read from */
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long count, /* # of elements to read */
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long *written); /* # of bytes written */
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int /* error status */
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xfs_inumbers(
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xfs_mount_t *mp, /* mount point for filesystem */
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xfs_ino_t *last, /* last inode returned */
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int *count, /* size of buffer/count returned */
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void __user *buffer, /* buffer with inode info */
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inumbers_fmt_pf formatter);
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/* Temporarily needed while we refactor functions. */
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struct xfs_btree_cur;
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struct xfs_inobt_rec_incore;
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void xfs_bulkstat_ichunk_ra(struct xfs_mount *mp, xfs_agnumber_t agno,
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struct xfs_inobt_rec_incore *irec);
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int xfs_bulkstat_grab_ichunk(struct xfs_btree_cur *cur, xfs_agino_t agino,
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int *icount, struct xfs_inobt_rec_incore *irec);
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#endif /* __XFS_ITABLE_H__ */
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