fs/xfs/xfs_itable.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   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. */
   9 struct xfs_ibulk {
  10         struct xfs_mount        *mp;
  11         void __user             *ubuffer; /* user output buffer */
  12         xfs_ino_t               startino; /* start with this inode */
  13         unsigned int            icount;   /* number of elements in ubuffer */
  14         unsigned int            ocount;   /* number of records returned */
  15         unsigned int            flags;    /* see XFS_IBULK_FLAG_* */
  16 };
  17
  18 /* Only iterate within the same AG as startino */
  19 #define XFS_IBULK_SAME_AG       (XFS_IWALK_SAME_AG)
  20
  21 /* Return value that means we want to abort the walk. */
  22 #define XFS_IBULK_ABORT         (XFS_IWALK_ABORT)
  23
  24 /*
  25  * Advance the user buffer pointer by one record of the given size.  If the
  26  * buffer is now full, return the appropriate error code.
  27  */
  28 static inline int
  29 xfs_ibulk_advance(
  30         struct xfs_ibulk        *breq,
  31         size_t                  bytes)
  32 {
  33         char __user             *b = breq->ubuffer;
  34
  35         breq->ubuffer = b + bytes;
  36         breq->ocount++;
  37         return breq->ocount == breq->icount ? XFS_IBULK_ABORT : 0;
  38 }
  39
  40 /*
  41  * Return stat information in bulk (by-inode) for the filesystem.
  42  */
  43
  44 typedef int (*bulkstat_one_fmt_pf)(struct xfs_ibulk *breq,
  45                 const struct xfs_bulkstat *bstat);
  46
  47 int xfs_bulkstat_one(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
  48 int xfs_bulkstat(struct xfs_ibulk *breq, bulkstat_one_fmt_pf formatter);
  49 void xfs_bulkstat_to_bstat(struct xfs_mount *mp, struct xfs_bstat *bs1,
  50                 const struct xfs_bulkstat *bstat);
  51
  52 typedef int (*inumbers_fmt_pf)(struct xfs_ibulk *breq,
  53                 const struct xfs_inumbers *igrp);
  54
  55 int xfs_inumbers(struct xfs_ibulk *breq, inumbers_fmt_pf formatter);
  56 void xfs_inumbers_to_inogrp(struct xfs_inogrp *ig1,
  57                 const struct xfs_inumbers *ig);
  58
  59 #endif  /* __XFS_ITABLE_H__ */