1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Oracle. All Rights Reserved.
4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_trans_resv.h"
11 #include "xfs_mount.h"
12 #include "xfs_log_format.h"
13 #include "xfs_trans.h"
14 #include "xfs_rtalloc.h"
15 #include "xfs_inode.h"
16 #include "scrub/scrub.h"
17 #include "scrub/common.h"
19 /* Set us up with the realtime metadata locked. */
27 error = xchk_setup_fs(sc, ip);
31 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
32 sc->ip = sc->mp->m_rbmip;
33 xfs_ilock(sc->ip, sc->ilock_flags);
38 /* Realtime bitmap. */
40 /* Scrub a free extent record from the realtime bitmap. */
44 struct xfs_rtalloc_rec *rec,
47 struct xfs_scrub *sc = priv;
48 xfs_rtblock_t startblock;
49 xfs_rtblock_t blockcount;
51 startblock = rec->ar_startext * tp->t_mountp->m_sb.sb_rextsize;
52 blockcount = rec->ar_extcount * tp->t_mountp->m_sb.sb_rextsize;
54 if (startblock + blockcount <= startblock ||
55 !xfs_verify_rtbno(sc->mp, startblock) ||
56 !xfs_verify_rtbno(sc->mp, startblock + blockcount - 1))
57 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
61 /* Scrub the realtime bitmap. */
68 /* Invoke the fork scrubber. */
69 error = xchk_metadata_inode_forks(sc);
70 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
73 error = xfs_rtalloc_query_all(sc->tp, xchk_rtbitmap_rec, sc);
74 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
81 /* Scrub the realtime summary. */
86 struct xfs_inode *rsumip = sc->mp->m_rsumip;
87 struct xfs_inode *old_ip = sc->ip;
88 uint old_ilock_flags = sc->ilock_flags;
92 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
93 * rt summary ip in compliance with the rt inode locking rules.
95 * Since we switch sc->ip to rsumip we have to save the old ilock
96 * flags so that we don't mix up the inode state that @sc tracks.
99 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
100 xfs_ilock(sc->ip, sc->ilock_flags);
102 /* Invoke the fork scrubber. */
103 error = xchk_metadata_inode_forks(sc);
104 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
107 /* XXX: implement this some day */
108 xchk_set_incomplete(sc);
110 /* Switch back to the rtbitmap inode and lock flags. */
111 xfs_iunlock(sc->ip, sc->ilock_flags);
112 sc->ilock_flags = old_ilock_flags;
118 /* xref check that the extent is not free in the rtbitmap */
120 xchk_xref_is_used_rt_space(
121 struct xfs_scrub *sc,
125 xfs_rtblock_t startext;
126 xfs_rtblock_t endext;
127 xfs_rtblock_t extcount;
131 if (xchk_skip_xref(sc->sm))
135 endext = fsbno + len - 1;
136 do_div(startext, sc->mp->m_sb.sb_rextsize);
137 do_div(endext, sc->mp->m_sb.sb_rextsize);
138 extcount = endext - startext + 1;
139 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
140 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
142 if (!xchk_should_check_xref(sc, &error, NULL))
145 xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
147 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);