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_dir2.h" 27 #include "xfs_dmapi.h" 28 #include "xfs_mount.h" 29 #include "xfs_bmap_btree.h" 30 #include "xfs_dir2_sf.h" 31 #include "xfs_attr_sf.h" 32 #include "xfs_dinode.h" 33 #include "xfs_inode.h" 34 #include "xfs_utils.h" 35 #include "xfs_error.h" 36 37 #ifdef DEBUG 38 39 int xfs_etrap[XFS_ERROR_NTRAP] = { 40 0, 41 }; 42 43 int 44 xfs_error_trap(int e) 45 { 46 int i; 47 48 if (!e) 49 return 0; 50 for (i = 0; i < XFS_ERROR_NTRAP; i++) { 51 if (xfs_etrap[i] == 0) 52 break; 53 if (e != xfs_etrap[i]) 54 continue; 55 cmn_err(CE_NOTE, "xfs_error_trap: error %d", e); 56 BUG(); 57 break; 58 } 59 return e; 60 } 61 62 int xfs_etest[XFS_NUM_INJECT_ERROR]; 63 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; 64 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; 65 66 int 67 xfs_error_test(int error_tag, int *fsidp, char *expression, 68 int line, char *file, unsigned long randfactor) 69 { 70 int i; 71 int64_t fsid; 72 73 if (random32() % randfactor) 74 return 0; 75 76 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); 77 78 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 79 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { 80 cmn_err(CE_WARN, 81 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", 82 expression, file, line, xfs_etest_fsname[i]); 83 return 1; 84 } 85 } 86 87 return 0; 88 } 89 90 int 91 xfs_errortag_add(int error_tag, xfs_mount_t *mp) 92 { 93 int i; 94 int len; 95 int64_t fsid; 96 97 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 98 99 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 100 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { 101 cmn_err(CE_WARN, "XFS error tag #%d on", error_tag); 102 return 0; 103 } 104 } 105 106 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 107 if (xfs_etest[i] == 0) { 108 cmn_err(CE_WARN, "Turned on XFS error tag #%d", 109 error_tag); 110 xfs_etest[i] = error_tag; 111 xfs_etest_fsid[i] = fsid; 112 len = strlen(mp->m_fsname); 113 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); 114 strcpy(xfs_etest_fsname[i], mp->m_fsname); 115 return 0; 116 } 117 } 118 119 cmn_err(CE_WARN, "error tag overflow, too many turned on"); 120 121 return 1; 122 } 123 124 int 125 xfs_errortag_clearall(xfs_mount_t *mp, int loud) 126 { 127 int64_t fsid; 128 int cleared = 0; 129 int i; 130 131 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 132 133 134 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 135 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && 136 xfs_etest[i] != 0) { 137 cleared = 1; 138 cmn_err(CE_WARN, "Clearing XFS error tag #%d", 139 xfs_etest[i]); 140 xfs_etest[i] = 0; 141 xfs_etest_fsid[i] = 0LL; 142 kmem_free(xfs_etest_fsname[i]); 143 xfs_etest_fsname[i] = NULL; 144 } 145 } 146 147 if (loud || cleared) 148 cmn_err(CE_WARN, 149 "Cleared all XFS error tags for filesystem \"%s\"", 150 mp->m_fsname); 151 152 return 0; 153 } 154 #endif /* DEBUG */ 155 156 157 void 158 xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...) 159 { 160 va_list ap; 161 162 va_start(ap, fmt); 163 xfs_fs_vcmn_err(level, mp, fmt, ap); 164 va_end(ap); 165 } 166 167 void 168 xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...) 169 { 170 va_list ap; 171 172 #ifdef DEBUG 173 xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES); 174 #endif 175 176 if (xfs_panic_mask && (xfs_panic_mask & panic_tag) 177 && (level & CE_ALERT)) { 178 level &= ~CE_ALERT; 179 level |= CE_PANIC; 180 cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG."); 181 } 182 va_start(ap, fmt); 183 xfs_fs_vcmn_err(level, mp, fmt, ap); 184 va_end(ap); 185 } 186 187 void 188 xfs_error_report( 189 const char *tag, 190 int level, 191 struct xfs_mount *mp, 192 const char *filename, 193 int linenum, 194 inst_t *ra) 195 { 196 if (level <= xfs_error_level) { 197 xfs_cmn_err(XFS_PTAG_ERROR_REPORT, 198 CE_ALERT, mp, 199 "XFS internal error %s at line %d of file %s. Caller 0x%p\n", 200 tag, linenum, filename, ra); 201 202 xfs_stack_trace(); 203 } 204 } 205 206 void 207 xfs_corruption_error( 208 const char *tag, 209 int level, 210 struct xfs_mount *mp, 211 void *p, 212 const char *filename, 213 int linenum, 214 inst_t *ra) 215 { 216 if (level <= xfs_error_level) 217 xfs_hex_dump(p, 16); 218 xfs_error_report(tag, level, mp, filename, linenum, ra); 219 } 220