linux/fs/xfs/libxfs/xfs_dquot_buf.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 * Copyright (c) 2013 Red Hat, Inc.
 * All Rights Reserved.
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_quota.h"
#include "xfs_trans.h"
#include "xfs_qm.h"
#include "xfs_error.h"

int
xfs_calc_dquots_per_chunk(
	unsigned int		nbblks)	/* basic block units */
{ … }

/*
 * Do some primitive error checking on ondisk dquot data structures.
 *
 * The xfs_dqblk structure /contains/ the xfs_disk_dquot structure;
 * we verify them separately because at some points we have only the
 * smaller xfs_disk_dquot structure available.
 */

xfs_failaddr_t
xfs_dquot_verify(
	struct xfs_mount	*mp,
	struct xfs_disk_dquot	*ddq,
	xfs_dqid_t		id)	/* used only during quotacheck */
{ … }

xfs_failaddr_t
xfs_dqblk_verify(
	struct xfs_mount	*mp,
	struct xfs_dqblk	*dqb,
	xfs_dqid_t		id)	/* used only during quotacheck */
{ … }

/*
 * Do some primitive error checking on ondisk dquot data structures.
 */
void
xfs_dqblk_repair(
	struct xfs_mount	*mp,
	struct xfs_dqblk	*dqb,
	xfs_dqid_t		id,
	xfs_dqtype_t		type)
{ … }

STATIC bool
xfs_dquot_buf_verify_crc(
	struct xfs_mount	*mp,
	struct xfs_buf		*bp,
	bool			readahead)
{ … }

STATIC xfs_failaddr_t
xfs_dquot_buf_verify(
	struct xfs_mount	*mp,
	struct xfs_buf		*bp,
	bool			readahead)
{ … }

static xfs_failaddr_t
xfs_dquot_buf_verify_struct(
	struct xfs_buf		*bp)
{ … }

static void
xfs_dquot_buf_read_verify(
	struct xfs_buf		*bp)
{ … }

/*
 * readahead errors are silent and simply leave the buffer as !done so a real
 * read will then be run with the xfs_dquot_buf_ops verifier. See
 * xfs_inode_buf_verify() for why we use EIO and ~XBF_DONE here rather than
 * reporting the failure.
 */
static void
xfs_dquot_buf_readahead_verify(
	struct xfs_buf	*bp)
{ … }

/*
 * we don't calculate the CRC here as that is done when the dquot is flushed to
 * the buffer after the update is done. This ensures that the dquot in the
 * buffer always has an up-to-date CRC value.
 */
static void
xfs_dquot_buf_write_verify(
	struct xfs_buf		*bp)
{ … }

const struct xfs_buf_ops xfs_dquot_buf_ops = …;

const struct xfs_buf_ops xfs_dquot_buf_ra_ops = …;

/* Convert an on-disk timer value into an incore timer value. */
time64_t
xfs_dquot_from_disk_ts(
	struct xfs_disk_dquot	*ddq,
	__be32			dtimer)
{ … }

/* Convert an incore timer value into an on-disk timer value. */
__be32
xfs_dquot_to_disk_ts(
	struct xfs_dquot	*dqp,
	time64_t		timer)
{ … }