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 } 109