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_inum.h" 23 #include "xfs_trans.h" 24 #include "xfs_sb.h" 25 #include "xfs_ag.h" 26 #include "xfs_mount.h" 27 #include "xfs_bmap_btree.h" 28 #include "xfs_dinode.h" 29 #include "xfs_inode.h" 30 #include "xfs_utils.h" 31 #include "xfs_error.h" 32 33 #ifdef DEBUG 34 35 int xfs_etrap[XFS_ERROR_NTRAP] = { 36 0, 37 }; 38 39 int 40 xfs_error_trap(int e) 41 { 42 int i; 43 44 if (!e) 45 return 0; 46 for (i = 0; i < XFS_ERROR_NTRAP; i++) { 47 if (xfs_etrap[i] == 0) 48 break; 49 if (e != xfs_etrap[i]) 50 continue; 51 cmn_err(CE_NOTE, "xfs_error_trap: error %d", e); 52 BUG(); 53 break; 54 } 55 return e; 56 } 57 58 int xfs_etest[XFS_NUM_INJECT_ERROR]; 59 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; 60 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; 61 int xfs_error_test_active; 62 63 int 64 xfs_error_test(int error_tag, int *fsidp, char *expression, 65 int line, char *file, unsigned long randfactor) 66 { 67 int i; 68 int64_t fsid; 69 70 if (random32() % randfactor) 71 return 0; 72 73 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); 74 75 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 76 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { 77 cmn_err(CE_WARN, 78 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", 79 expression, file, line, xfs_etest_fsname[i]); 80 return 1; 81 } 82 } 83 84 return 0; 85 } 86 87 int 88 xfs_errortag_add(int error_tag, xfs_mount_t *mp) 89 { 90 int i; 91 int len; 92 int64_t fsid; 93 94 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 95 96 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 97 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { 98 cmn_err(CE_WARN, "XFS error tag #%d on", error_tag); 99 return 0; 100 } 101 } 102 103 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 104 if (xfs_etest[i] == 0) { 105 cmn_err(CE_WARN, "Turned on XFS error tag #%d", 106 error_tag); 107 xfs_etest[i] = error_tag; 108 xfs_etest_fsid[i] = fsid; 109 len = strlen(mp->m_fsname); 110 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); 111 strcpy(xfs_etest_fsname[i], mp->m_fsname); 112 xfs_error_test_active++; 113 return 0; 114 } 115 } 116 117 cmn_err(CE_WARN, "error tag overflow, too many turned on"); 118 119 return 1; 120 } 121 122 int 123 xfs_errortag_clearall(xfs_mount_t *mp, int loud) 124 { 125 int64_t fsid; 126 int cleared = 0; 127 int i; 128 129 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 130 131 132 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 133 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && 134 xfs_etest[i] != 0) { 135 cleared = 1; 136 cmn_err(CE_WARN, "Clearing XFS error tag #%d", 137 xfs_etest[i]); 138 xfs_etest[i] = 0; 139 xfs_etest_fsid[i] = 0LL; 140 kmem_free(xfs_etest_fsname[i]); 141 xfs_etest_fsname[i] = NULL; 142 xfs_error_test_active--; 143 } 144 } 145 146 if (loud || cleared) 147 cmn_err(CE_WARN, 148 "Cleared all XFS error tags for filesystem \"%s\"", 149 mp->m_fsname); 150 151 return 0; 152 } 153 #endif /* DEBUG */ 154 155 void 156 xfs_error_report( 157 const char *tag, 158 int level, 159 struct xfs_mount *mp, 160 const char *filename, 161 int linenum, 162 inst_t *ra) 163 { 164 if (level <= xfs_error_level) { 165 xfs_cmn_err(XFS_PTAG_ERROR_REPORT, 166 CE_ALERT, mp, 167 "XFS internal error %s at line %d of file %s. Caller 0x%p\n", 168 tag, linenum, filename, ra); 169 170 xfs_stack_trace(); 171 } 172 } 173 174 void 175 xfs_corruption_error( 176 const char *tag, 177 int level, 178 struct xfs_mount *mp, 179 void *p, 180 const char *filename, 181 int linenum, 182 inst_t *ra) 183 { 184 if (level <= xfs_error_level) 185 xfs_hex_dump(p, 16); 186 xfs_error_report(tag, level, mp, filename, linenum, ra); 187 } 188