// SPDX-License-Identifier: GPL-2.0
/*
* Copyright ( c ) 2000 - 2006 Silicon Graphics , 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_buf_item.h"
#include "xfs_trans_priv.h"
#include "xfs_qm.h"
#include "xfs_log.h"
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
#include "xfs_error.h"
STATIC void
xlog_recover_dquot_ra_pass2(
struct xlog *log,
struct xlog_recover_item *item)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_disk_dquot *recddq;
struct xfs_dq_logformat *dq_f;
uint type;
if (mp->m_qflags == 0 )
return ;
recddq = item->ri_buf[1 ].iov_base;
if (recddq == NULL)
return ;
if (item->ri_buf[1 ].iov_len < sizeof (struct xfs_disk_dquot))
return ;
type = recddq->d_type & XFS_DQTYPE_REC_MASK;
ASSERT(type);
if (log->l_quotaoffs_flag & type)
return ;
dq_f = item->ri_buf[0 ].iov_base;
ASSERT(dq_f);
ASSERT(dq_f->qlf_len == 1 );
xlog_buf_readahead(log, dq_f->qlf_blkno,
XFS_FSB_TO_BB(mp, dq_f->qlf_len),
&xfs_dquot_buf_ra_ops);
}
/*
* Recover a dquot record
*/
STATIC int
xlog_recover_dquot_commit_pass2(
struct xlog *log,
struct list_head *buffer_list,
struct xlog_recover_item *item,
xfs_lsn_t current_lsn)
{
struct xfs_mount *mp = log->l_mp;
struct xfs_buf *bp;
struct xfs_dqblk *dqb;
struct xfs_disk_dquot *ddq, *recddq;
struct xfs_dq_logformat *dq_f;
xfs_failaddr_t fa;
int error;
uint type;
/*
* Filesystems are required to send in quota flags at mount time .
*/
if (mp->m_qflags == 0 )
return 0 ;
recddq = item->ri_buf[1 ].iov_base;
if (recddq == NULL) {
xfs_alert(log->l_mp, "NULL dquot in %s." , __func__);
return -EFSCORRUPTED;
}
if (item->ri_buf[1 ].iov_len < sizeof (struct xfs_disk_dquot)) {
xfs_alert(log->l_mp, "dquot too small (%zd) in %s." ,
item->ri_buf[1 ].iov_len, __func__);
return -EFSCORRUPTED;
}
/*
* This type of quotas was turned off , so ignore this record .
*/
type = recddq->d_type & XFS_DQTYPE_REC_MASK;
ASSERT(type);
if (log->l_quotaoffs_flag & type)
return 0 ;
/*
* At this point we know that quota was _ not_ turned off .
* Since the mount flags are not indicating to us otherwise , this
* must mean that quota is on , and the dquot needs to be replayed .
* Remember that we may not have fully recovered the superblock yet ,
* so we can ' t do the usual trick of looking at the SB quota bits .
*
* The other possibility , of course , is that the quota subsystem was
* removed since the last mount - ENOSYS .
*/
dq_f = item->ri_buf[0 ].iov_base;
ASSERT(dq_f);
fa = xfs_dquot_verify(mp, recddq, dq_f->qlf_id);
if (fa) {
xfs_alert(mp, "corrupt dquot ID 0x%x in log at %pS" ,
dq_f->qlf_id, fa);
return -EFSCORRUPTED;
}
ASSERT(dq_f->qlf_len == 1 );
/*
* At this point we are assuming that the dquots have been allocated
* and hence the buffer has valid dquots stamped in it . It should ,
* therefore , pass verifier validation . If the dquot is bad , then the
* we ' ll return an error here , so we don ' t need to specifically check
* the dquot in the buffer after the verifier has run .
*/
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dq_f->qlf_blkno,
XFS_FSB_TO_BB(mp, dq_f->qlf_len), 0 , &bp,
&xfs_dquot_buf_ops);
if (error)
return error;
ASSERT(bp);
dqb = xfs_buf_offset(bp, dq_f->qlf_boffset);
ddq = &dqb->dd_diskdq;
/*
* If the dquot has an LSN in it , recover the dquot only if it ' s less
* than the lsn of the transaction we are replaying .
*/
if (xfs_has_crc(mp)) {
xfs_lsn_t lsn = be64_to_cpu(dqb->dd_lsn);
if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0 ) {
goto out_release;
}
}
memcpy(ddq, recddq, item->ri_buf[1 ].iov_len);
if (xfs_has_crc(mp)) {
xfs_update_cksum((char *)dqb, sizeof (struct xfs_dqblk),
XFS_DQUOT_CRC_OFF);
}
/* Validate the recovered dquot. */
fa = xfs_dqblk_verify(log->l_mp, dqb, dq_f->qlf_id);
if (fa) {
XFS_CORRUPTION_ERROR("Bad dquot after recovery" ,
XFS_ERRLEVEL_LOW, mp, dqb,
sizeof (struct xfs_dqblk));
xfs_alert(mp,
"Metadata corruption detected at %pS, dquot 0x%x" ,
fa, dq_f->qlf_id);
error = -EFSCORRUPTED;
goto out_release;
}
ASSERT(dq_f->qlf_size == 2 );
ASSERT(bp->b_mount == mp);
bp->b_flags |= _XBF_LOGRECOVERY;
xfs_buf_delwri_queue(bp, buffer_list);
out_release:
xfs_buf_relse(bp);
return 0 ;
}
const struct xlog_recover_item_ops xlog_dquot_item_ops = {
.item_type = XFS_LI_DQUOT,
.ra_pass2 = xlog_recover_dquot_ra_pass2,
.commit_pass2 = xlog_recover_dquot_commit_pass2,
};
/*
* Recover QUOTAOFF records . We simply make a note of it in the xlog
* structure , so that we know not to do any dquot item or dquot buffer recovery ,
* of that type .
*/
STATIC int
xlog_recover_quotaoff_commit_pass1(
struct xlog *log,
struct xlog_recover_item *item)
{
struct xfs_qoff_logformat *qoff_f = item->ri_buf[0 ].iov_base;
ASSERT(qoff_f);
/*
* The logitem format ' s flag tells us if this was user quotaoff ,
* group / project quotaoff or both .
*/
if (qoff_f->qf_flags & XFS_UQUOTA_ACCT)
log->l_quotaoffs_flag |= XFS_DQTYPE_USER;
if (qoff_f->qf_flags & XFS_PQUOTA_ACCT)
log->l_quotaoffs_flag |= XFS_DQTYPE_PROJ;
if (qoff_f->qf_flags & XFS_GQUOTA_ACCT)
log->l_quotaoffs_flag |= XFS_DQTYPE_GROUP;
return 0 ;
}
const struct xlog_recover_item_ops xlog_quotaoff_item_ops = {
.item_type = XFS_LI_QUOTAOFF,
.commit_pass1 = xlog_recover_quotaoff_commit_pass1,
/* nothing to commit in pass2 */
};
Messung V0.5 in Prozent C=95 H=95 G=94
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-29)
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