1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2017-2023 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. */
45 const struct xfs_rtalloc_rec *rec,
48 struct xfs_scrub *sc = priv;
49 xfs_rtblock_t startblock;
50 xfs_rtblock_t blockcount;
52 startblock = rec->ar_startext * mp->m_sb.sb_rextsize;
53 blockcount = rec->ar_extcount * mp->m_sb.sb_rextsize;
55 if (!xfs_verify_rtext(mp, startblock, blockcount))
56 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
60 /* Make sure the entire rtbitmap file is mapped with written extents. */
62 xchk_rtbitmap_check_extents(
65 struct xfs_mount *mp = sc->mp;
66 struct xfs_bmbt_irec map;
71 for (off = 0; off < mp->m_sb.sb_rbmblocks;) {
72 if (xchk_should_terminate(sc, &error) ||
73 (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
76 /* Make sure we have a written extent. */
78 error = xfs_bmapi_read(mp->m_rbmip, off,
79 mp->m_sb.sb_rbmblocks - off, &map, &nmap,
81 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, off, &error))
84 if (nmap != 1 || !xfs_bmap_is_written_extent(&map)) {
85 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, off);
89 off += map.br_blockcount;
95 /* Scrub the realtime bitmap. */
102 /* Is the size of the rtbitmap correct? */
103 if (sc->mp->m_rbmip->i_disk_size !=
104 XFS_FSB_TO_B(sc->mp, sc->mp->m_sb.sb_rbmblocks)) {
105 xchk_ino_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
109 /* Invoke the fork scrubber. */
110 error = xchk_metadata_inode_forks(sc);
111 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
114 error = xchk_rtbitmap_check_extents(sc);
115 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
118 error = xfs_rtalloc_query_all(sc->mp, sc->tp, xchk_rtbitmap_rec, sc);
119 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
126 /* Scrub the realtime summary. */
129 struct xfs_scrub *sc)
131 struct xfs_inode *rsumip = sc->mp->m_rsumip;
132 struct xfs_inode *old_ip = sc->ip;
133 uint old_ilock_flags = sc->ilock_flags;
137 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
138 * rt summary ip in compliance with the rt inode locking rules.
140 * Since we switch sc->ip to rsumip we have to save the old ilock
141 * flags so that we don't mix up the inode state that @sc tracks.
144 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
145 xfs_ilock(sc->ip, sc->ilock_flags);
147 /* Invoke the fork scrubber. */
148 error = xchk_metadata_inode_forks(sc);
149 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
152 /* XXX: implement this some day */
153 xchk_set_incomplete(sc);
155 /* Switch back to the rtbitmap inode and lock flags. */
156 xfs_iunlock(sc->ip, sc->ilock_flags);
157 sc->ilock_flags = old_ilock_flags;
163 /* xref check that the extent is not free in the rtbitmap */
165 xchk_xref_is_used_rt_space(
166 struct xfs_scrub *sc,
170 xfs_rtblock_t startext;
171 xfs_rtblock_t endext;
172 xfs_rtblock_t extcount;
176 if (xchk_skip_xref(sc->sm))
180 endext = fsbno + len - 1;
181 do_div(startext, sc->mp->m_sb.sb_rextsize);
182 do_div(endext, sc->mp->m_sb.sb_rextsize);
183 extcount = endext - startext + 1;
184 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
185 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
187 if (!xchk_should_check_xref(sc, &error, NULL))
190 xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
192 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);