Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0
2 : /*
3 : * Copyright (c) 2000-2006 Silicon Graphics, Inc.
4 : * All Rights Reserved.
5 : */
6 : #include "xfs.h"
7 : #include "xfs_fs.h"
8 : #include "xfs_shared.h"
9 : #include "xfs_format.h"
10 : #include "xfs_log_format.h"
11 : #include "xfs_trans_resv.h"
12 : #include "xfs_mount.h"
13 : #include "xfs_inode.h"
14 : #include "xfs_quota.h"
15 : #include "xfs_trans.h"
16 : #include "xfs_buf_item.h"
17 : #include "xfs_trans_priv.h"
18 : #include "xfs_qm.h"
19 : #include "xfs_log.h"
20 : #include "xfs_log_priv.h"
21 : #include "xfs_log_recover.h"
22 :
23 : STATIC void
24 5766100 : xlog_recover_dquot_ra_pass2(
25 : struct xlog *log,
26 : struct xlog_recover_item *item)
27 : {
28 5766100 : struct xfs_mount *mp = log->l_mp;
29 5766100 : struct xfs_disk_dquot *recddq;
30 5766100 : struct xfs_dq_logformat *dq_f;
31 5766100 : uint type;
32 :
33 5766100 : if (mp->m_qflags == 0)
34 : return;
35 :
36 5766100 : recddq = item->ri_buf[1].i_addr;
37 5766100 : if (recddq == NULL)
38 : return;
39 5766100 : if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot))
40 : return;
41 :
42 5766100 : type = recddq->d_type & XFS_DQTYPE_REC_MASK;
43 5766100 : ASSERT(type);
44 5766100 : if (log->l_quotaoffs_flag & type)
45 : return;
46 :
47 5766100 : dq_f = item->ri_buf[0].i_addr;
48 5766100 : ASSERT(dq_f);
49 5766100 : ASSERT(dq_f->qlf_len == 1);
50 :
51 5766100 : xlog_buf_readahead(log, dq_f->qlf_blkno,
52 5766100 : XFS_FSB_TO_BB(mp, dq_f->qlf_len),
53 : &xfs_dquot_buf_ra_ops);
54 : }
55 :
56 : /*
57 : * Recover a dquot record
58 : */
59 : STATIC int
60 5766100 : xlog_recover_dquot_commit_pass2(
61 : struct xlog *log,
62 : struct list_head *buffer_list,
63 : struct xlog_recover_item *item,
64 : xfs_lsn_t current_lsn)
65 : {
66 5766100 : struct xfs_mount *mp = log->l_mp;
67 5766100 : struct xfs_buf *bp;
68 5766100 : struct xfs_disk_dquot *ddq, *recddq;
69 5766100 : struct xfs_dq_logformat *dq_f;
70 5766100 : xfs_failaddr_t fa;
71 5766100 : int error;
72 5766100 : uint type;
73 :
74 : /*
75 : * Filesystems are required to send in quota flags at mount time.
76 : */
77 5766100 : if (mp->m_qflags == 0)
78 : return 0;
79 :
80 5766100 : recddq = item->ri_buf[1].i_addr;
81 5766100 : if (recddq == NULL) {
82 0 : xfs_alert(log->l_mp, "NULL dquot in %s.", __func__);
83 0 : return -EFSCORRUPTED;
84 : }
85 5766100 : if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot)) {
86 0 : xfs_alert(log->l_mp, "dquot too small (%d) in %s.",
87 : item->ri_buf[1].i_len, __func__);
88 0 : return -EFSCORRUPTED;
89 : }
90 :
91 : /*
92 : * This type of quotas was turned off, so ignore this record.
93 : */
94 5766100 : type = recddq->d_type & XFS_DQTYPE_REC_MASK;
95 5766100 : ASSERT(type);
96 5766100 : if (log->l_quotaoffs_flag & type)
97 : return 0;
98 :
99 : /*
100 : * At this point we know that quota was _not_ turned off.
101 : * Since the mount flags are not indicating to us otherwise, this
102 : * must mean that quota is on, and the dquot needs to be replayed.
103 : * Remember that we may not have fully recovered the superblock yet,
104 : * so we can't do the usual trick of looking at the SB quota bits.
105 : *
106 : * The other possibility, of course, is that the quota subsystem was
107 : * removed since the last mount - ENOSYS.
108 : */
109 5766100 : dq_f = item->ri_buf[0].i_addr;
110 5766100 : ASSERT(dq_f);
111 5766100 : fa = xfs_dquot_verify(mp, recddq, dq_f->qlf_id);
112 5766100 : if (fa) {
113 0 : xfs_alert(mp, "corrupt dquot ID 0x%x in log at %pS",
114 : dq_f->qlf_id, fa);
115 0 : return -EFSCORRUPTED;
116 : }
117 5766100 : ASSERT(dq_f->qlf_len == 1);
118 :
119 : /*
120 : * At this point we are assuming that the dquots have been allocated
121 : * and hence the buffer has valid dquots stamped in it. It should,
122 : * therefore, pass verifier validation. If the dquot is bad, then the
123 : * we'll return an error here, so we don't need to specifically check
124 : * the dquot in the buffer after the verifier has run.
125 : */
126 5766100 : error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dq_f->qlf_blkno,
127 5766100 : XFS_FSB_TO_BB(mp, dq_f->qlf_len), 0, &bp,
128 : &xfs_dquot_buf_ops);
129 5766100 : if (error)
130 : return error;
131 :
132 5766100 : ASSERT(bp);
133 5766100 : ddq = xfs_buf_offset(bp, dq_f->qlf_boffset);
134 :
135 : /*
136 : * If the dquot has an LSN in it, recover the dquot only if it's less
137 : * than the lsn of the transaction we are replaying.
138 : */
139 5766100 : if (xfs_has_crc(mp)) {
140 5766100 : struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddq;
141 5766100 : xfs_lsn_t lsn = be64_to_cpu(dqb->dd_lsn);
142 :
143 5766100 : if (lsn && lsn != -1 && XFS_LSN_CMP(lsn, current_lsn) >= 0) {
144 3770 : goto out_release;
145 : }
146 : }
147 :
148 11524660 : memcpy(ddq, recddq, item->ri_buf[1].i_len);
149 5762330 : if (xfs_has_crc(mp)) {
150 5762330 : xfs_update_cksum((char *)ddq, sizeof(struct xfs_dqblk),
151 : XFS_DQUOT_CRC_OFF);
152 : }
153 :
154 5762330 : ASSERT(dq_f->qlf_size == 2);
155 5762330 : ASSERT(bp->b_mount == mp);
156 5762330 : bp->b_flags |= _XBF_LOGRECOVERY;
157 5762330 : xfs_buf_delwri_queue(bp, buffer_list);
158 :
159 5766100 : out_release:
160 5766100 : xfs_buf_relse(bp);
161 5766100 : return 0;
162 : }
163 :
164 : const struct xlog_recover_item_ops xlog_dquot_item_ops = {
165 : .item_type = XFS_LI_DQUOT,
166 : .ra_pass2 = xlog_recover_dquot_ra_pass2,
167 : .commit_pass2 = xlog_recover_dquot_commit_pass2,
168 : };
169 :
170 : /*
171 : * Recover QUOTAOFF records. We simply make a note of it in the xlog
172 : * structure, so that we know not to do any dquot item or dquot buffer recovery,
173 : * of that type.
174 : */
175 : STATIC int
176 0 : xlog_recover_quotaoff_commit_pass1(
177 : struct xlog *log,
178 : struct xlog_recover_item *item)
179 : {
180 0 : struct xfs_qoff_logformat *qoff_f = item->ri_buf[0].i_addr;
181 0 : ASSERT(qoff_f);
182 :
183 : /*
184 : * The logitem format's flag tells us if this was user quotaoff,
185 : * group/project quotaoff or both.
186 : */
187 0 : if (qoff_f->qf_flags & XFS_UQUOTA_ACCT)
188 0 : log->l_quotaoffs_flag |= XFS_DQTYPE_USER;
189 0 : if (qoff_f->qf_flags & XFS_PQUOTA_ACCT)
190 0 : log->l_quotaoffs_flag |= XFS_DQTYPE_PROJ;
191 0 : if (qoff_f->qf_flags & XFS_GQUOTA_ACCT)
192 0 : log->l_quotaoffs_flag |= XFS_DQTYPE_GROUP;
193 :
194 0 : return 0;
195 : }
196 :
197 : const struct xlog_recover_item_ops xlog_quotaoff_item_ops = {
198 : .item_type = XFS_LI_QUOTAOFF,
199 : .commit_pass1 = xlog_recover_quotaoff_commit_pass1,
200 : /* nothing to commit in pass2 */
201 : };
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