1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Oracle. All Rights Reserved.
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"
17 #include "scrub/scrub.h"
18 #include "scrub/common.h"
20 /* Set us up with the realtime metadata locked. */
27 error = xchk_setup_fs(sc);
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 const 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 (!xfs_verify_rtext(sc->mp, startblock, blockcount))
55 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
59 /* Make sure the entire rtbitmap file is mapped with written extents. */
61 xchk_rtbitmap_check_extents(
64 struct xfs_mount *mp = sc->mp;
65 struct xfs_bmbt_irec map;
70 for (off = 0; off < mp->m_sb.sb_rbmblocks;) {
71 if (xchk_should_terminate(sc, &error) ||
72 (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
75 /* Make sure we have a written extent. */
77 error = xfs_bmapi_read(mp->m_rbmip, off,
78 mp->m_sb.sb_rbmblocks - off, &map, &nmap,
80 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, off, &error))
83 if (nmap != 1 || !xfs_bmap_is_written_extent(&map)) {
84 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, off);
88 off += map.br_blockcount;
94 /* Scrub the realtime bitmap. */
101 /* Is the size of the rtbitmap correct? */
102 if (sc->mp->m_rbmip->i_disk_size !=
103 XFS_FSB_TO_B(sc->mp, sc->mp->m_sb.sb_rbmblocks)) {
104 xchk_ino_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
108 /* Invoke the fork scrubber. */
109 error = xchk_metadata_inode_forks(sc);
110 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
113 error = xchk_rtbitmap_check_extents(sc);
114 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
117 error = xfs_rtalloc_query_all(sc->tp, xchk_rtbitmap_rec, sc);
118 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
125 /* Scrub the realtime summary. */
128 struct xfs_scrub *sc)
130 struct xfs_inode *rsumip = sc->mp->m_rsumip;
131 struct xfs_inode *old_ip = sc->ip;
132 uint old_ilock_flags = sc->ilock_flags;
136 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
137 * rt summary ip in compliance with the rt inode locking rules.
139 * Since we switch sc->ip to rsumip we have to save the old ilock
140 * flags so that we don't mix up the inode state that @sc tracks.
143 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
144 xfs_ilock(sc->ip, sc->ilock_flags);
146 /* Invoke the fork scrubber. */
147 error = xchk_metadata_inode_forks(sc);
148 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
151 /* XXX: implement this some day */
152 xchk_set_incomplete(sc);
154 /* Switch back to the rtbitmap inode and lock flags. */
155 xfs_iunlock(sc->ip, sc->ilock_flags);
156 sc->ilock_flags = old_ilock_flags;
162 /* xref check that the extent is not free in the rtbitmap */
164 xchk_xref_is_used_rt_space(
165 struct xfs_scrub *sc,
169 xfs_rtblock_t startext;
170 xfs_rtblock_t endext;
171 xfs_rtblock_t extcount;
175 if (xchk_skip_xref(sc->sm))
179 endext = fsbno + len - 1;
180 do_div(startext, sc->mp->m_sb.sb_rextsize);
181 do_div(endext, sc->mp->m_sb.sb_rextsize);
182 extcount = endext - startext + 1;
183 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
184 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
186 if (!xchk_should_check_xref(sc, &error, NULL))
189 xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
191 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);