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 static void 157 xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap) 158 { 159 if (mp != NULL) { 160 char *newfmt; 161 int len = 16 + mp->m_fsname_len + strlen(fmt); 162 163 newfmt = kmem_alloc(len, KM_SLEEP); 164 sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt); 165 icmn_err(level, newfmt, ap); 166 kmem_free(newfmt); 167 } else { 168 icmn_err(level, fmt, ap); 169 } 170 } 171 172 void 173 xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...) 174 { 175 va_list ap; 176 177 va_start(ap, fmt); 178 xfs_fs_vcmn_err(level, mp, fmt, ap); 179 va_end(ap); 180 } 181 182 void 183 xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...) 184 { 185 va_list ap; 186 187 #ifdef DEBUG 188 xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT; 189 #endif 190 191 if (xfs_panic_mask && (xfs_panic_mask & panic_tag) 192 && (level & CE_ALERT)) { 193 level &= ~CE_ALERT; 194 level |= CE_PANIC; 195 cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG."); 196 } 197 va_start(ap, fmt); 198 xfs_fs_vcmn_err(level, mp, fmt, ap); 199 va_end(ap); 200 } 201 202 void 203 xfs_error_report( 204 char *tag, 205 int level, 206 xfs_mount_t *mp, 207 char *fname, 208 int linenum, 209 inst_t *ra) 210 { 211 if (level <= xfs_error_level) { 212 xfs_cmn_err(XFS_PTAG_ERROR_REPORT, 213 CE_ALERT, mp, 214 "XFS internal error %s at line %d of file %s. Caller 0x%p\n", 215 tag, linenum, fname, ra); 216 217 xfs_stack_trace(); 218 } 219 } 220 221 void 222 xfs_corruption_error( 223 char *tag, 224 int level, 225 xfs_mount_t *mp, 226 void *p, 227 char *fname, 228 int linenum, 229 inst_t *ra) 230 { 231 if (level <= xfs_error_level) 232 xfs_hex_dump(p, 16); 233 xfs_error_report(tag, level, mp, fname, linenum, ra); 234 } 235