| Darrick J. Wong | 29b0767 | 2017-10-17 21:37:46 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2017 Oracle. All Rights Reserved. |
| 3 | * |
| 4 | * Author: Darrick J. Wong <darrick.wong@oracle.com> |
| 5 | * |
| 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. |
| 10 | * |
| 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. |
| 15 | * |
| 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. |
| 19 | */ |
| 20 | #include "xfs.h" |
| 21 | #include "xfs_fs.h" |
| 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" |
| 28 | #include "xfs_bit.h" |
| 29 | #include "xfs_log_format.h" |
| 30 | #include "xfs_trans.h" |
| 31 | #include "xfs_sb.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" |
| 39 | |
| 40 | /* Set us up with the realtime metadata locked. */ |
| 41 | int |
| 42 | xfs_scrub_setup_rt( |
| 43 | struct xfs_scrub_context *sc, |
| 44 | struct xfs_inode *ip) |
| 45 | { |
| 46 | struct xfs_mount *mp = sc->mp; |
| 47 | int error = 0; |
| 48 | |
| 49 | /* |
| 50 | * If userspace gave us an AG number or inode data, they don't |
| 51 | * know what they're doing. Get out. |
| 52 | */ |
| 53 | if (sc->sm->sm_agno || sc->sm->sm_ino || sc->sm->sm_gen) |
| 54 | return -EINVAL; |
| 55 | |
| 56 | error = xfs_scrub_setup_fs(sc, ip); |
| 57 | if (error) |
| 58 | return error; |
| 59 | |
| 60 | sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP; |
| 61 | sc->ip = mp->m_rbmip; |
| 62 | xfs_ilock(sc->ip, sc->ilock_flags); |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | /* Realtime bitmap. */ |
| 68 | |
| 69 | /* Scrub a free extent record from the realtime bitmap. */ |
| 70 | STATIC int |
| 71 | xfs_scrub_rtbitmap_rec( |
| 72 | struct xfs_trans *tp, |
| 73 | struct xfs_rtalloc_rec *rec, |
| 74 | void *priv) |
| 75 | { |
| 76 | struct xfs_scrub_context *sc = priv; |
| 77 | |
| 78 | if (rec->ar_startblock + rec->ar_blockcount <= rec->ar_startblock || |
| 79 | !xfs_verify_rtbno(sc->mp, rec->ar_startblock) || |
| 80 | !xfs_verify_rtbno(sc->mp, rec->ar_startblock + |
| 81 | rec->ar_blockcount - 1)) |
| 82 | xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, 0); |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | /* Scrub the realtime bitmap. */ |
| 87 | int |
| 88 | xfs_scrub_rtbitmap( |
| 89 | struct xfs_scrub_context *sc) |
| 90 | { |
| 91 | int error; |
| 92 | |
| 93 | error = xfs_rtalloc_query_all(sc->tp, xfs_scrub_rtbitmap_rec, sc); |
| 94 | if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, 0, &error)) |
| 95 | goto out; |
| 96 | |
| 97 | out: |
| 98 | return error; |
| 99 | } |
| 100 | |
| 101 | /* Scrub the realtime summary. */ |
| 102 | int |
| 103 | xfs_scrub_rtsummary( |
| 104 | struct xfs_scrub_context *sc) |
| 105 | { |
| 106 | /* XXX: implement this some day */ |
| 107 | return -ENOENT; |
| 108 | } |