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 #endif 62 63 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR)) 64 65 int xfs_etest[XFS_NUM_INJECT_ERROR]; 66 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; 67 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; 68 69 int 70 xfs_error_test(int error_tag, int *fsidp, char *expression, 71 int line, char *file, unsigned long randfactor) 72 { 73 int i; 74 int64_t fsid; 75 76 if (random32() % randfactor) 77 return 0; 78 79 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); 80 81 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 82 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { 83 cmn_err(CE_WARN, 84 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", 85 expression, file, line, xfs_etest_fsname[i]); 86 return 1; 87 } 88 } 89 90 return 0; 91 } 92 93 int 94 xfs_errortag_add(int error_tag, xfs_mount_t *mp) 95 { 96 int i; 97 int len; 98 int64_t fsid; 99 100 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 101 102 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 103 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { 104 cmn_err(CE_WARN, "XFS error tag #%d on", error_tag); 105 return 0; 106 } 107 } 108 109 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 110 if (xfs_etest[i] == 0) { 111 cmn_err(CE_WARN, "Turned on XFS error tag #%d", 112 error_tag); 113 xfs_etest[i] = error_tag; 114 xfs_etest_fsid[i] = fsid; 115 len = strlen(mp->m_fsname); 116 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); 117 strcpy(xfs_etest_fsname[i], mp->m_fsname); 118 return 0; 119 } 120 } 121 122 cmn_err(CE_WARN, "error tag overflow, too many turned on"); 123 124 return 1; 125 } 126 127 int 128 xfs_errortag_clearall(xfs_mount_t *mp, int loud) 129 { 130 int64_t fsid; 131 int cleared = 0; 132 int i; 133 134 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); 135 136 137 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { 138 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && 139 xfs_etest[i] != 0) { 140 cleared = 1; 141 cmn_err(CE_WARN, "Clearing XFS error tag #%d", 142 xfs_etest[i]); 143 xfs_etest[i] = 0; 144 xfs_etest_fsid[i] = 0LL; 145 kmem_free(xfs_etest_fsname[i]); 146 xfs_etest_fsname[i] = NULL; 147 } 148 } 149 150 if (loud || cleared) 151 cmn_err(CE_WARN, 152 "Cleared all XFS error tags for filesystem \"%s\"", 153 mp->m_fsname); 154 155 return 0; 156 } 157 #endif /* DEBUG || INDUCE_IO_ERROR */ 158 159 static void 160 xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap) 161 { 162 if (mp != NULL) { 163 char *newfmt; 164 int len = 16 + mp->m_fsname_len + strlen(fmt); 165 166 newfmt = kmem_alloc(len, KM_SLEEP); 167 sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt); 168 icmn_err(level, newfmt, ap); 169 kmem_free(newfmt); 170 } else { 171 icmn_err(level, fmt, ap); 172 } 173 } 174 175 void 176 xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...) 177 { 178 va_list ap; 179 180 va_start(ap, fmt); 181 xfs_fs_vcmn_err(level, mp, fmt, ap); 182 va_end(ap); 183 } 184 185 void 186 xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...) 187 { 188 va_list ap; 189 190 #ifdef DEBUG 191 xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT; 192 #endif 193 194 if (xfs_panic_mask && (xfs_panic_mask & panic_tag) 195 && (level & CE_ALERT)) { 196 level &= ~CE_ALERT; 197 level |= CE_PANIC; 198 cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG."); 199 } 200 va_start(ap, fmt); 201 xfs_fs_vcmn_err(level, mp, fmt, ap); 202 va_end(ap); 203 } 204 205 void 206 xfs_error_report( 207 char *tag, 208 int level, 209 xfs_mount_t *mp, 210 char *fname, 211 int linenum, 212 inst_t *ra) 213 { 214 if (level <= xfs_error_level) { 215 xfs_cmn_err(XFS_PTAG_ERROR_REPORT, 216 CE_ALERT, mp, 217 "XFS internal error %s at line %d of file %s. Caller 0x%p\n", 218 tag, linenum, fname, ra); 219 220 xfs_stack_trace(); 221 } 222 } 223 224 void 225 xfs_corruption_error( 226 char *tag, 227 int level, 228 xfs_mount_t *mp, 229 void *p, 230 char *fname, 231 int linenum, 232 inst_t *ra) 233 { 234 if (level <= xfs_error_level) 235 xfs_hex_dump(p, 16); 236 xfs_error_report(tag, level, mp, fname, linenum, ra); 237 } 238