fs/xfs/xfs_error.h

   1 /*
   2  * Copyright (c) 2000-2002,2005 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 #ifndef __XFS_ERROR_H__
  19 #define __XFS_ERROR_H__
  20
  21 #define XFS_ERECOVER    1       /* Failure to recover log */
  22 #define XFS_ELOGSTAT    2       /* Failure to stat log in user space */
  23 #define XFS_ENOLOGSPACE 3       /* Reservation too large */
  24 #define XFS_ENOTSUP     4       /* Operation not supported */
  25 #define XFS_ENOLSN      5       /* Can't find the lsn you asked for */
  26 #define XFS_ENOTFOUND   6
  27 #define XFS_ENOTXFS     7       /* Not XFS filesystem */
  28
  29 #ifdef DEBUG
  30 #define XFS_ERROR_NTRAP 10
  31 extern int      xfs_etrap[XFS_ERROR_NTRAP];
  32 extern int      xfs_error_trap(int);
  33 #define XFS_ERROR(e)    xfs_error_trap(e)
  34 #else
  35 #define XFS_ERROR(e)    (e)
  36 #endif
  37
  38 struct xfs_mount;
  39
  40 extern void xfs_error_report(char *tag, int level, struct xfs_mount *mp,
  41                                 char *fname, int linenum, inst_t *ra);
  42 extern void xfs_corruption_error(char *tag, int level, struct xfs_mount *mp,
  43                                 void *p, char *fname, int linenum, inst_t *ra);
  44
  45 #define XFS_ERROR_REPORT(e, lvl, mp)    \
  46         xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
  47 #define XFS_CORRUPTION_ERROR(e, lvl, mp, mem)   \
  48         xfs_corruption_error(e, lvl, mp, mem, \
  49                              __FILE__, __LINE__, __return_address)
  50
  51 #define XFS_ERRLEVEL_OFF        0
  52 #define XFS_ERRLEVEL_LOW        1
  53 #define XFS_ERRLEVEL_HIGH       5
  54
  55 /*
  56  * Macros to set EFSCORRUPTED & return/branch.
  57  */
  58 #define XFS_WANT_CORRUPTED_GOTO(x,l)    \
  59         { \
  60                 int fs_is_ok = (x); \
  61                 ASSERT(fs_is_ok); \
  62                 if (unlikely(!fs_is_ok)) { \
  63                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
  64                                          XFS_ERRLEVEL_LOW, NULL); \
  65                         error = XFS_ERROR(EFSCORRUPTED); \
  66                         goto l; \
  67                 } \
  68         }
  69
  70 #define XFS_WANT_CORRUPTED_RETURN(x)    \
  71         { \
  72                 int fs_is_ok = (x); \
  73                 ASSERT(fs_is_ok); \
  74                 if (unlikely(!fs_is_ok)) { \
  75                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
  76                                          XFS_ERRLEVEL_LOW, NULL); \
  77                         return XFS_ERROR(EFSCORRUPTED); \
  78                 } \
  79         }
  80
  81 /*
  82  * error injection tags - the labels can be anything you want
  83  * but each tag should have its own unique number
  84  */
  85
  86 #define XFS_ERRTAG_NOERROR                              0
  87 #define XFS_ERRTAG_IFLUSH_1                             1
  88 #define XFS_ERRTAG_IFLUSH_2                             2
  89 #define XFS_ERRTAG_IFLUSH_3                             3
  90 #define XFS_ERRTAG_IFLUSH_4                             4
  91 #define XFS_ERRTAG_IFLUSH_5                             5
  92 #define XFS_ERRTAG_IFLUSH_6                             6
  93 #define XFS_ERRTAG_DA_READ_BUF                          7
  94 #define XFS_ERRTAG_BTREE_CHECK_LBLOCK                   8
  95 #define XFS_ERRTAG_BTREE_CHECK_SBLOCK                   9
  96 #define XFS_ERRTAG_ALLOC_READ_AGF                       10
  97 #define XFS_ERRTAG_IALLOC_READ_AGI                      11
  98 #define XFS_ERRTAG_ITOBP_INOTOBP                        12
  99 #define XFS_ERRTAG_IUNLINK                              13
 100 #define XFS_ERRTAG_IUNLINK_REMOVE                       14
 101 #define XFS_ERRTAG_DIR_INO_VALIDATE                     15
 102 #define XFS_ERRTAG_BULKSTAT_READ_CHUNK                  16
 103 #define XFS_ERRTAG_IODONE_IOERR                         17
 104 #define XFS_ERRTAG_STRATREAD_IOERR                      18
 105 #define XFS_ERRTAG_STRATCMPL_IOERR                      19
 106 #define XFS_ERRTAG_DIOWRITE_IOERR                       20
 107 #define XFS_ERRTAG_BMAPIFORMAT                          21
 108 #define XFS_ERRTAG_MAX                                  22
 109
 110 /*
 111  * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
 112  */
 113 #define XFS_RANDOM_DEFAULT                              100
 114 #define XFS_RANDOM_IFLUSH_1                             XFS_RANDOM_DEFAULT
 115 #define XFS_RANDOM_IFLUSH_2                             XFS_RANDOM_DEFAULT
 116 #define XFS_RANDOM_IFLUSH_3                             XFS_RANDOM_DEFAULT
 117 #define XFS_RANDOM_IFLUSH_4                             XFS_RANDOM_DEFAULT
 118 #define XFS_RANDOM_IFLUSH_5                             XFS_RANDOM_DEFAULT
 119 #define XFS_RANDOM_IFLUSH_6                             XFS_RANDOM_DEFAULT
 120 #define XFS_RANDOM_DA_READ_BUF                          XFS_RANDOM_DEFAULT
 121 #define XFS_RANDOM_BTREE_CHECK_LBLOCK                   (XFS_RANDOM_DEFAULT/4)
 122 #define XFS_RANDOM_BTREE_CHECK_SBLOCK                   XFS_RANDOM_DEFAULT
 123 #define XFS_RANDOM_ALLOC_READ_AGF                       XFS_RANDOM_DEFAULT
 124 #define XFS_RANDOM_IALLOC_READ_AGI                      XFS_RANDOM_DEFAULT
 125 #define XFS_RANDOM_ITOBP_INOTOBP                        XFS_RANDOM_DEFAULT
 126 #define XFS_RANDOM_IUNLINK                              XFS_RANDOM_DEFAULT
 127 #define XFS_RANDOM_IUNLINK_REMOVE                       XFS_RANDOM_DEFAULT
 128 #define XFS_RANDOM_DIR_INO_VALIDATE                     XFS_RANDOM_DEFAULT
 129 #define XFS_RANDOM_BULKSTAT_READ_CHUNK                  XFS_RANDOM_DEFAULT
 130 #define XFS_RANDOM_IODONE_IOERR                         (XFS_RANDOM_DEFAULT/10)
 131 #define XFS_RANDOM_STRATREAD_IOERR                      (XFS_RANDOM_DEFAULT/10)
 132 #define XFS_RANDOM_STRATCMPL_IOERR                      (XFS_RANDOM_DEFAULT/10)
 133 #define XFS_RANDOM_DIOWRITE_IOERR                       (XFS_RANDOM_DEFAULT/10)
 134 #define XFS_RANDOM_BMAPIFORMAT                          XFS_RANDOM_DEFAULT
 135
 136 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
 137 extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
 138 extern void xfs_error_test_init(void);
 139
 140 #define XFS_NUM_INJECT_ERROR                            10
 141
 142 #ifdef __ANSI_CPP__
 143 #define XFS_TEST_ERROR(expr, mp, tag, rf)               \
 144         ((expr) || \
 145          xfs_error_test((tag), (mp)->m_fixedfsid, #expr, __LINE__, __FILE__, \
 146                          (rf)))
 147 #else
 148 #define XFS_TEST_ERROR(expr, mp, tag, rf)               \
 149         ((expr) || \
 150          xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
 151                         (rf)))
 152 #endif /* __ANSI_CPP__ */
 153
 154 extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
 155 extern int xfs_errortag_clear(int error_tag, xfs_mount_t *mp);
 156 extern int xfs_errortag_clearall(xfs_mount_t *mp);
 157 extern int xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud);
 158 #else
 159 #define XFS_TEST_ERROR(expr, mp, tag, rf)       (expr)
 160 #define xfs_errortag_add(tag, mp)               (ENOSYS)
 161 #define xfs_errortag_clearall(mp)               (ENOSYS)
 162 #endif /* (DEBUG || INDUCE_IO_ERROR) */
 163
 164 /*
 165  * XFS panic tags -- allow a call to xfs_cmn_err() be turned into
 166  *                      a panic by setting xfs_panic_mask in a
 167  *                      sysctl.  update xfs_max[XFS_PARAM] if
 168  *                      more are added.
 169  */
 170 #define         XFS_NO_PTAG                     0
 171 #define         XFS_PTAG_IFLUSH                 0x00000001
 172 #define         XFS_PTAG_LOGRES                 0x00000002
 173 #define         XFS_PTAG_AILDELETE              0x00000004
 174 #define         XFS_PTAG_ERROR_REPORT           0x00000008
 175 #define         XFS_PTAG_SHUTDOWN_CORRUPT       0x00000010
 176 #define         XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
 177 #define         XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040
 178
 179 struct xfs_mount;
 180 /* PRINTFLIKE4 */
 181 extern void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp,
 182                         char *fmt, ...);
 183 /* PRINTFLIKE3 */
 184 extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...);
 185
 186 #define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \
 187         xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
 188
 189 #endif  /* __XFS_ERROR_H__ */