2 * Copyright (C) 2017 Oracle. All Rights Reserved.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it would be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
22 #include "xfs_shared.h"
23 #include "xfs_format.h"
24 #include "xfs_trans_resv.h"
25 #include "xfs_mount.h"
26 #include "xfs_defer.h"
27 #include "xfs_btree.h"
29 #include "xfs_log_format.h"
30 #include "xfs_trans.h"
32 #include "xfs_alloc.h"
33 #include "xfs_rtalloc.h"
34 #include "xfs_inode.h"
35 #include "scrub/xfs_scrub.h"
36 #include "scrub/scrub.h"
37 #include "scrub/common.h"
38 #include "scrub/trace.h"
40 /* Set us up with the realtime metadata locked. */
43 struct xfs_scrub_context *sc,
48 error = xfs_scrub_setup_fs(sc, ip);
52 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
53 sc->ip = sc->mp->m_rbmip;
54 xfs_ilock(sc->ip, sc->ilock_flags);
59 /* Realtime bitmap. */
61 /* Scrub a free extent record from the realtime bitmap. */
63 xfs_scrub_rtbitmap_rec(
65 struct xfs_rtalloc_rec *rec,
68 struct xfs_scrub_context *sc = priv;
69 xfs_rtblock_t startblock;
70 xfs_rtblock_t blockcount;
72 startblock = rec->ar_startext * tp->t_mountp->m_sb.sb_rextsize;
73 blockcount = rec->ar_extcount * tp->t_mountp->m_sb.sb_rextsize;
75 if (startblock + blockcount <= startblock ||
76 !xfs_verify_rtbno(sc->mp, startblock) ||
77 !xfs_verify_rtbno(sc->mp, startblock + blockcount - 1))
78 xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
82 /* Scrub the realtime bitmap. */
85 struct xfs_scrub_context *sc)
89 /* Invoke the fork scrubber. */
90 error = xfs_scrub_metadata_inode_forks(sc);
91 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
94 error = xfs_rtalloc_query_all(sc->tp, xfs_scrub_rtbitmap_rec, sc);
95 if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
102 /* Scrub the realtime summary. */
105 struct xfs_scrub_context *sc)
107 struct xfs_inode *rsumip = sc->mp->m_rsumip;
108 struct xfs_inode *old_ip = sc->ip;
109 uint old_ilock_flags = sc->ilock_flags;
113 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
114 * rt summary ip in compliance with the rt inode locking rules.
116 * Since we switch sc->ip to rsumip we have to save the old ilock
117 * flags so that we don't mix up the inode state that @sc tracks.
120 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
121 xfs_ilock(sc->ip, sc->ilock_flags);
123 /* Invoke the fork scrubber. */
124 error = xfs_scrub_metadata_inode_forks(sc);
125 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
128 /* XXX: implement this some day */
129 xfs_scrub_set_incomplete(sc);
131 /* Switch back to the rtbitmap inode and lock flags. */
132 xfs_iunlock(sc->ip, sc->ilock_flags);
133 sc->ilock_flags = old_ilock_flags;
139 /* xref check that the extent is not free in the rtbitmap */
141 xfs_scrub_xref_is_used_rt_space(
142 struct xfs_scrub_context *sc,
146 xfs_rtblock_t startext;
147 xfs_rtblock_t endext;
148 xfs_rtblock_t extcount;
152 if (xfs_scrub_skip_xref(sc->sm))
156 endext = fsbno + len - 1;
157 do_div(startext, sc->mp->m_sb.sb_rextsize);
158 if (do_div(endext, sc->mp->m_sb.sb_rextsize))
160 extcount = endext - startext;
161 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
162 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
164 if (!xfs_scrub_should_check_xref(sc, &error, NULL))
167 xfs_scrub_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
169 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);