1 /* 2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #include "xfs.h" 19 #include "xfs_fs.h" 20 #include "xfs_types.h" 21 #include "xfs_log.h" 22 #include "xfs_trans.h" 23 #include "xfs_sb.h" 24 #include "xfs_ag.h" 25 #include "xfs_mount.h" 26 #include "xfs_bmap_btree.h" 27 #include "xfs_dinode.h" 28 #include "xfs_inode.h" 29 #include "xfs_error.h" 30 31 #ifdef DEBUG 32 33 int xfs_etrap[XFS_ERROR_NTRAP] = { 34 0, 35 }; 36 37 int 38 xfs_error_trap(int e) 39 { 40 int i; 41 42 if (!e) 43 return 0; 44 for (i = 0; i < XFS_ERROR_NTRAP; i++) { 45 if (xfs_etrap[i] == 0) 46 break; 47 if (e != xfs_etrap[i]) 48 continue; 49 xfs_notice(NULL, "%s: error %d", __func__, e); 50 BUG(); 51 break; 52 } 53 return e; 54 } 55 56 int xfs_etest[XFS_NUM_INJECT_ERROR]; 57 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; 58 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; 59 int xfs_error_test_active; 60 61 int 62 xfs_error_test(int error_tag, int *fsidp, char *expression, 63 int line, char *file, unsigned long randfactor) 64 { 65 int i; 66 int64_t fsid; 67 68 if (prandom_u32() % randfactor) 69 return 0; 70 71 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); 72 73 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 74 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { 75 xfs_warn(NULL, 76 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", 77 expression, file, line, xfs_etest_fsname[i]); 78 return 1; 79 } 80 } 81 82 return 0; 83 } 84 85 int 86 xfs_errortag_add(int error_tag, xfs_mount_t *mp) 87 { 88 int i; 89 int len; 90 int64_t fsid; 91 92 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 93 94 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 95 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { 96 xfs_warn(mp, "error tag #%d on", error_tag); 97 return 0; 98 } 99 } 100 101 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 102 if (xfs_etest[i] == 0) { 103 xfs_warn(mp, "Turned on XFS error tag #%d", 104 error_tag); 105 xfs_etest[i] = error_tag; 106 xfs_etest_fsid[i] = fsid; 107 len = strlen(mp->m_fsname); 108 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); 109 strcpy(xfs_etest_fsname[i], mp->m_fsname); 110 xfs_error_test_active++; 111 return 0; 112 } 113 } 114 115 xfs_warn(mp, "error tag overflow, too many turned on"); 116 117 return 1; 118 } 119 120 int 121 xfs_errortag_clearall(xfs_mount_t *mp, int loud) 122 { 123 int64_t fsid; 124 int cleared = 0; 125 int i; 126 127 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 128 129 130 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 131 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && 132 xfs_etest[i] != 0) { 133 cleared = 1; 134 xfs_warn(mp, "Clearing XFS error tag #%d", 135 xfs_etest[i]); 136 xfs_etest[i] = 0; 137 xfs_etest_fsid[i] = 0LL; 138 kmem_free(xfs_etest_fsname[i]); 139 xfs_etest_fsname[i] = NULL; 140 xfs_error_test_active--; 141 } 142 } 143 144 if (loud || cleared) 145 xfs_warn(mp, "Cleared all XFS error tags for filesystem"); 146 147 return 0; 148 } 149 #endif /* DEBUG */ 150 151 void 152 xfs_error_report( 153 const char *tag, 154 int level, 155 struct xfs_mount *mp, 156 const char *filename, 157 int linenum, 158 inst_t *ra) 159 { 160 if (level <= xfs_error_level) { 161 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT, 162 "Internal error %s at line %d of file %s. Caller 0x%p\n", 163 tag, linenum, filename, ra); 164 165 xfs_stack_trace(); 166 } 167 } 168 169 void 170 xfs_corruption_error( 171 const char *tag, 172 int level, 173 struct xfs_mount *mp, 174 void *p, 175 const char *filename, 176 int linenum, 177 inst_t *ra) 178 { 179 if (level <= xfs_error_level) 180 xfs_hex_dump(p, 64); 181 xfs_error_report(tag, level, mp, filename, linenum, ra); 182 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair"); 183 } 184