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 #ifdef DEBUG
  22 #define XFS_ERROR_NTRAP 10
  23 extern int      xfs_etrap[XFS_ERROR_NTRAP];
  24 extern int      xfs_error_trap(int);
  25 #define XFS_ERROR(e)    xfs_error_trap(e)
  26 #else
  27 #define XFS_ERROR(e)    (e)
  28 #endif
  29
  30 struct xfs_mount;
  31
  32 extern void xfs_error_report(char *tag, int level, struct xfs_mount *mp,
  33                                 char *fname, int linenum, inst_t *ra);
  34 extern void xfs_corruption_error(char *tag, int level, struct xfs_mount *mp,
  35                                 void *p, char *fname, int linenum, inst_t *ra);
  36
  37 #define XFS_ERROR_REPORT(e, lvl, mp)    \
  38         xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
  39 #define XFS_CORRUPTION_ERROR(e, lvl, mp, mem)   \
  40         xfs_corruption_error(e, lvl, mp, mem, \
  41                              __FILE__, __LINE__, __return_address)
  42
  43 #define XFS_ERRLEVEL_OFF        0
  44 #define XFS_ERRLEVEL_LOW        1
  45 #define XFS_ERRLEVEL_HIGH       5
  46
  47 /*
  48  * Macros to set EFSCORRUPTED & return/branch.
  49  */
  50 #define XFS_WANT_CORRUPTED_GOTO(x,l)    \
  51         { \
  52                 int fs_is_ok = (x); \
  53                 ASSERT(fs_is_ok); \
  54                 if (unlikely(!fs_is_ok)) { \
  55                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
  56                                          XFS_ERRLEVEL_LOW, NULL); \
  57                         error = XFS_ERROR(EFSCORRUPTED); \
  58                         goto l; \
  59                 } \
  60         }
  61
  62 #define XFS_WANT_CORRUPTED_RETURN(x)    \
  63         { \
  64                 int fs_is_ok = (x); \
  65                 ASSERT(fs_is_ok); \
  66                 if (unlikely(!fs_is_ok)) { \
  67                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
  68                                          XFS_ERRLEVEL_LOW, NULL); \
  69                         return XFS_ERROR(EFSCORRUPTED); \
  70                 } \
  71         }
  72
  73 /*
  74  * error injection tags - the labels can be anything you want
  75  * but each tag should have its own unique number
  76  */
  77
  78 #define XFS_ERRTAG_NOERROR                              0
  79 #define XFS_ERRTAG_IFLUSH_1                             1
  80 #define XFS_ERRTAG_IFLUSH_2                             2
  81 #define XFS_ERRTAG_IFLUSH_3                             3
  82 #define XFS_ERRTAG_IFLUSH_4                             4
  83 #define XFS_ERRTAG_IFLUSH_5                             5
  84 #define XFS_ERRTAG_IFLUSH_6                             6
  85 #define XFS_ERRTAG_DA_READ_BUF                          7
  86 #define XFS_ERRTAG_BTREE_CHECK_LBLOCK                   8
  87 #define XFS_ERRTAG_BTREE_CHECK_SBLOCK                   9
  88 #define XFS_ERRTAG_ALLOC_READ_AGF                       10
  89 #define XFS_ERRTAG_IALLOC_READ_AGI                      11
  90 #define XFS_ERRTAG_ITOBP_INOTOBP                        12
  91 #define XFS_ERRTAG_IUNLINK                              13
  92 #define XFS_ERRTAG_IUNLINK_REMOVE                       14
  93 #define XFS_ERRTAG_DIR_INO_VALIDATE                     15
  94 #define XFS_ERRTAG_BULKSTAT_READ_CHUNK                  16
  95 #define XFS_ERRTAG_IODONE_IOERR                         17
  96 #define XFS_ERRTAG_STRATREAD_IOERR                      18
  97 #define XFS_ERRTAG_STRATCMPL_IOERR                      19
  98 #define XFS_ERRTAG_DIOWRITE_IOERR                       20
  99 #define XFS_ERRTAG_BMAPIFORMAT                          21
 100 #define XFS_ERRTAG_MAX                                  22
 101
 102 /*
 103  * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
 104  */
 105 #define XFS_RANDOM_DEFAULT                              100
 106 #define XFS_RANDOM_IFLUSH_1                             XFS_RANDOM_DEFAULT
 107 #define XFS_RANDOM_IFLUSH_2                             XFS_RANDOM_DEFAULT
 108 #define XFS_RANDOM_IFLUSH_3                             XFS_RANDOM_DEFAULT
 109 #define XFS_RANDOM_IFLUSH_4                             XFS_RANDOM_DEFAULT
 110 #define XFS_RANDOM_IFLUSH_5                             XFS_RANDOM_DEFAULT
 111 #define XFS_RANDOM_IFLUSH_6                             XFS_RANDOM_DEFAULT
 112 #define XFS_RANDOM_DA_READ_BUF                          XFS_RANDOM_DEFAULT
 113 #define XFS_RANDOM_BTREE_CHECK_LBLOCK                   (XFS_RANDOM_DEFAULT/4)
 114 #define XFS_RANDOM_BTREE_CHECK_SBLOCK                   XFS_RANDOM_DEFAULT
 115 #define XFS_RANDOM_ALLOC_READ_AGF                       XFS_RANDOM_DEFAULT
 116 #define XFS_RANDOM_IALLOC_READ_AGI                      XFS_RANDOM_DEFAULT
 117 #define XFS_RANDOM_ITOBP_INOTOBP                        XFS_RANDOM_DEFAULT
 118 #define XFS_RANDOM_IUNLINK                              XFS_RANDOM_DEFAULT
 119 #define XFS_RANDOM_IUNLINK_REMOVE                       XFS_RANDOM_DEFAULT
 120 #define XFS_RANDOM_DIR_INO_VALIDATE                     XFS_RANDOM_DEFAULT
 121 #define XFS_RANDOM_BULKSTAT_READ_CHUNK                  XFS_RANDOM_DEFAULT
 122 #define XFS_RANDOM_IODONE_IOERR                         (XFS_RANDOM_DEFAULT/10)
 123 #define XFS_RANDOM_STRATREAD_IOERR                      (XFS_RANDOM_DEFAULT/10)
 124 #define XFS_RANDOM_STRATCMPL_IOERR                      (XFS_RANDOM_DEFAULT/10)
 125 #define XFS_RANDOM_DIOWRITE_IOERR                       (XFS_RANDOM_DEFAULT/10)
 126 #define XFS_RANDOM_BMAPIFORMAT                          XFS_RANDOM_DEFAULT
 127
 128 #ifdef DEBUG
 129 extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
 130
 131 #define XFS_NUM_INJECT_ERROR                            10
 132 #define XFS_TEST_ERROR(expr, mp, tag, rf)               \
 133         ((expr) || \
 134          xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
 135                         (rf)))
 136
 137 extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
 138 extern int xfs_errortag_clearall(xfs_mount_t *mp, int loud);
 139 #else
 140 #define XFS_TEST_ERROR(expr, mp, tag, rf)       (expr)
 141 #define xfs_errortag_add(tag, mp)               (ENOSYS)
 142 #define xfs_errortag_clearall(mp, loud)         (ENOSYS)
 143 #endif /* DEBUG */
 144
 145 /*
 146  * XFS panic tags -- allow a call to xfs_cmn_err() be turned into
 147  *                      a panic by setting xfs_panic_mask in a
 148  *                      sysctl.  update xfs_max[XFS_PARAM] if
 149  *                      more are added.
 150  */
 151 #define         XFS_NO_PTAG                     0
 152 #define         XFS_PTAG_IFLUSH                 0x00000001
 153 #define         XFS_PTAG_LOGRES                 0x00000002
 154 #define         XFS_PTAG_AILDELETE              0x00000004
 155 #define         XFS_PTAG_ERROR_REPORT           0x00000008
 156 #define         XFS_PTAG_SHUTDOWN_CORRUPT       0x00000010
 157 #define         XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
 158 #define         XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040
 159 #define         XFS_PTAG_FSBLOCK_ZERO           0x00000080
 160
 161 struct xfs_mount;
 162 /* PRINTFLIKE4 */
 163 extern void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp,
 164                         char *fmt, ...);
 165 /* PRINTFLIKE3 */
 166 extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...);
 167
 168 extern void xfs_hex_dump(void *p, int length);
 169
 170 #define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \
 171         xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
 172
 173 #define xfs_fs_mount_cmn_err(f, fmt, args...) \
 174         ((f & XFS_MFSI_QUIET)? (void)0 : cmn_err(CE_WARN, "XFS: " fmt, ## args))
 175
 176 #endif  /* __XFS_ERROR_H__ */