forked from luck/tmp_suning_uos_patched
65fbaf2489
The 32-bit xfs_blkstat_one handler was failing because a size check checked whether the remaining (32-bit) user buffer was less than the (64-bit) bulkstat buffer, and failed with ENOMEM if so. Move this check into the respective handlers so that they check the correct sizes. Also, the formatters were returning negative errors or positive bytes copied; this was odd in the positive error value world of xfs, and handled wrong by at least some of the callers, which treated the bytes returned as an error value. Move the bytes-used assignment into the formatters. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_ITABLE_H__
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#define __XFS_ITABLE_H__
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/*
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* xfs_bulkstat() is used to fill in xfs_bstat structures as well as dm_stat
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* structures (by the dmi library). This is a pointer to a formatter function
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* that will iget the inode and fill in the appropriate structure.
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* see xfs_bulkstat_one() and xfs_dm_bulkstat_one() in dmapi_xfs.c
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*/
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typedef int (*bulkstat_one_pf)(struct xfs_mount *mp,
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xfs_ino_t ino,
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void __user *buffer,
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int ubsize,
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void *private_data,
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xfs_daddr_t bno,
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int *ubused,
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void *dip,
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int *stat);
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/*
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* Values for stat return value.
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*/
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#define BULKSTAT_RV_NOTHING 0
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#define BULKSTAT_RV_DIDONE 1
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#define BULKSTAT_RV_GIVEUP 2
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/*
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* Values for bulkstat flag argument.
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*/
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#define BULKSTAT_FG_IGET 0x1 /* Go through the buffer cache */
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#define BULKSTAT_FG_QUICK 0x2 /* No iget, walk the dinode cluster */
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#define BULKSTAT_FG_INLINE 0x4 /* No iget if inline attrs */
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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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int /* error status */
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xfs_bulkstat(
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xfs_mount_t *mp, /* mount point for filesystem */
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xfs_ino_t *lastino, /* last inode returned */
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int *count, /* size of buffer/count returned */
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bulkstat_one_pf formatter, /* func that'd fill a single buf */
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void *private_data, /* private data for formatter */
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size_t statstruct_size,/* sizeof struct that we're filling */
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char __user *ubuffer,/* buffer with inode stats */
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int flags, /* flag to control access method */
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int *done); /* 1 if there are more stats to get */
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int
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xfs_bulkstat_single(
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xfs_mount_t *mp,
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xfs_ino_t *lastinop,
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char __user *buffer,
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int *done);
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typedef int (*bulkstat_one_fmt_pf)( /* used size in bytes or negative error */
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void __user *ubuffer, /* buffer to write to */
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int ubsize, /* remaining user buffer sz */
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int *ubused, /* bytes used by formatter */
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const xfs_bstat_t *buffer); /* buffer to read from */
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int
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xfs_bulkstat_one_int(
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xfs_mount_t *mp,
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xfs_ino_t ino,
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void __user *buffer,
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int ubsize,
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bulkstat_one_fmt_pf formatter,
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xfs_daddr_t bno,
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int *ubused,
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void *dibuff,
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int *stat);
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int
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xfs_bulkstat_one(
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xfs_mount_t *mp,
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xfs_ino_t ino,
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void __user *buffer,
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int ubsize,
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void *private_data,
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xfs_daddr_t bno,
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int *ubused,
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void *dibuff,
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int *stat);
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int
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xfs_internal_inum(
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xfs_mount_t *mp,
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xfs_ino_t ino);
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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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#endif /* __XFS_ITABLE_H__ */
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