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 int error; 47 48 error = xfs_scrub_setup_fs(sc, ip); 49 if (error) 50 return error; 51 52 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP; 53 sc->ip = sc->mp->m_rbmip; 54 xfs_ilock(sc->ip, sc->ilock_flags); 55 56 return 0; 57 } 58 59 /* Realtime bitmap. */ 60 61 /* Scrub a free extent record from the realtime bitmap. */ 62 STATIC int 63 xfs_scrub_rtbitmap_rec( 64 struct xfs_trans *tp, 65 struct xfs_rtalloc_rec *rec, 66 void *priv) 67 { 68 struct xfs_scrub_context *sc = priv; 69 70 if (rec->ar_startblock + rec->ar_blockcount <= rec->ar_startblock || 71 !xfs_verify_rtbno(sc->mp, rec->ar_startblock) || 72 !xfs_verify_rtbno(sc->mp, rec->ar_startblock + 73 rec->ar_blockcount - 1)) 74 xfs_scrub_fblock_set_corrupt(sc, XFS_DATA_FORK, 0); 75 return 0; 76 } 77 78 /* Scrub the realtime bitmap. */ 79 int 80 xfs_scrub_rtbitmap( 81 struct xfs_scrub_context *sc) 82 { 83 int error; 84 85 error = xfs_rtalloc_query_all(sc->tp, xfs_scrub_rtbitmap_rec, sc); 86 if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, 0, &error)) 87 goto out; 88 89 out: 90 return error; 91 } 92 93 /* Scrub the realtime summary. */ 94 int 95 xfs_scrub_rtsummary( 96 struct xfs_scrub_context *sc) 97 { 98 /* XXX: implement this some day */ 99 return -ENOENT; 100 } 101 102 103 /* xref check that the extent is not free in the rtbitmap */ 104 void 105 xfs_scrub_xref_is_used_rt_space( 106 struct xfs_scrub_context *sc, 107 xfs_rtblock_t fsbno, 108 xfs_extlen_t len) 109 { 110 bool is_free; 111 int error; 112 113 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP); 114 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, fsbno, len, 115 &is_free); 116 if (!xfs_scrub_should_check_xref(sc, &error, NULL)) 117 goto out_unlock; 118 if (is_free) 119 xfs_scrub_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino, 120 NULL); 121 out_unlock: 122 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP); 123 } 124