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TOMOYO Linux Cross Reference
Linux/fs/xfs/xfs_error.h

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  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(const char *tag, int level, struct xfs_mount *mp,
 33                         const char *filename, int linenum, inst_t *ra);
 34 extern void xfs_corruption_error(const char *tag, int level,
 35                         struct xfs_mount *mp, void *p, const char *filename,
 36                         int linenum, inst_t *ra);
 37 
 38 #define XFS_ERROR_REPORT(e, lvl, mp)    \
 39         xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
 40 #define XFS_CORRUPTION_ERROR(e, lvl, mp, mem)   \
 41         xfs_corruption_error(e, lvl, mp, mem, \
 42                              __FILE__, __LINE__, __return_address)
 43 
 44 #define XFS_ERRLEVEL_OFF        0
 45 #define XFS_ERRLEVEL_LOW        1
 46 #define XFS_ERRLEVEL_HIGH       5
 47 
 48 /*
 49  * Macros to set EFSCORRUPTED & return/branch.
 50  */
 51 #define XFS_WANT_CORRUPTED_GOTO(x,l)    \
 52         { \
 53                 int fs_is_ok = (x); \
 54                 ASSERT(fs_is_ok); \
 55                 if (unlikely(!fs_is_ok)) { \
 56                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
 57                                          XFS_ERRLEVEL_LOW, NULL); \
 58                         error = XFS_ERROR(EFSCORRUPTED); \
 59                         goto l; \
 60                 } \
 61         }
 62 
 63 #define XFS_WANT_CORRUPTED_RETURN(x)    \
 64         { \
 65                 int fs_is_ok = (x); \
 66                 ASSERT(fs_is_ok); \
 67                 if (unlikely(!fs_is_ok)) { \
 68                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
 69                                          XFS_ERRLEVEL_LOW, NULL); \
 70                         return XFS_ERROR(EFSCORRUPTED); \
 71                 } \
 72         }
 73 
 74 /*
 75  * error injection tags - the labels can be anything you want
 76  * but each tag should have its own unique number
 77  */
 78 
 79 #define XFS_ERRTAG_NOERROR                              0
 80 #define XFS_ERRTAG_IFLUSH_1                             1
 81 #define XFS_ERRTAG_IFLUSH_2                             2
 82 #define XFS_ERRTAG_IFLUSH_3                             3
 83 #define XFS_ERRTAG_IFLUSH_4                             4
 84 #define XFS_ERRTAG_IFLUSH_5                             5
 85 #define XFS_ERRTAG_IFLUSH_6                             6
 86 #define XFS_ERRTAG_DA_READ_BUF                          7
 87 #define XFS_ERRTAG_BTREE_CHECK_LBLOCK                   8
 88 #define XFS_ERRTAG_BTREE_CHECK_SBLOCK                   9
 89 #define XFS_ERRTAG_ALLOC_READ_AGF                       10
 90 #define XFS_ERRTAG_IALLOC_READ_AGI                      11
 91 #define XFS_ERRTAG_ITOBP_INOTOBP                        12
 92 #define XFS_ERRTAG_IUNLINK                              13
 93 #define XFS_ERRTAG_IUNLINK_REMOVE                       14
 94 #define XFS_ERRTAG_DIR_INO_VALIDATE                     15
 95 #define XFS_ERRTAG_BULKSTAT_READ_CHUNK                  16
 96 #define XFS_ERRTAG_IODONE_IOERR                         17
 97 #define XFS_ERRTAG_STRATREAD_IOERR                      18
 98 #define XFS_ERRTAG_STRATCMPL_IOERR                      19
 99 #define XFS_ERRTAG_DIOWRITE_IOERR                       20
100 #define XFS_ERRTAG_BMAPIFORMAT                          21
101 #define XFS_ERRTAG_MAX                                  22
102 
103 /*
104  * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
105  */
106 #define XFS_RANDOM_DEFAULT                              100
107 #define XFS_RANDOM_IFLUSH_1                             XFS_RANDOM_DEFAULT
108 #define XFS_RANDOM_IFLUSH_2                             XFS_RANDOM_DEFAULT
109 #define XFS_RANDOM_IFLUSH_3                             XFS_RANDOM_DEFAULT
110 #define XFS_RANDOM_IFLUSH_4                             XFS_RANDOM_DEFAULT
111 #define XFS_RANDOM_IFLUSH_5                             XFS_RANDOM_DEFAULT
112 #define XFS_RANDOM_IFLUSH_6                             XFS_RANDOM_DEFAULT
113 #define XFS_RANDOM_DA_READ_BUF                          XFS_RANDOM_DEFAULT
114 #define XFS_RANDOM_BTREE_CHECK_LBLOCK                   (XFS_RANDOM_DEFAULT/4)
115 #define XFS_RANDOM_BTREE_CHECK_SBLOCK                   XFS_RANDOM_DEFAULT
116 #define XFS_RANDOM_ALLOC_READ_AGF                       XFS_RANDOM_DEFAULT
117 #define XFS_RANDOM_IALLOC_READ_AGI                      XFS_RANDOM_DEFAULT
118 #define XFS_RANDOM_ITOBP_INOTOBP                        XFS_RANDOM_DEFAULT
119 #define XFS_RANDOM_IUNLINK                              XFS_RANDOM_DEFAULT
120 #define XFS_RANDOM_IUNLINK_REMOVE                       XFS_RANDOM_DEFAULT
121 #define XFS_RANDOM_DIR_INO_VALIDATE                     XFS_RANDOM_DEFAULT
122 #define XFS_RANDOM_BULKSTAT_READ_CHUNK                  XFS_RANDOM_DEFAULT
123 #define XFS_RANDOM_IODONE_IOERR                         (XFS_RANDOM_DEFAULT/10)
124 #define XFS_RANDOM_STRATREAD_IOERR                      (XFS_RANDOM_DEFAULT/10)
125 #define XFS_RANDOM_STRATCMPL_IOERR                      (XFS_RANDOM_DEFAULT/10)
126 #define XFS_RANDOM_DIOWRITE_IOERR                       (XFS_RANDOM_DEFAULT/10)
127 #define XFS_RANDOM_BMAPIFORMAT                          XFS_RANDOM_DEFAULT
128 
129 #ifdef DEBUG
130 extern int xfs_error_test_active;
131 extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
132 
133 #define XFS_NUM_INJECT_ERROR                            10
134 #define XFS_TEST_ERROR(expr, mp, tag, rf)               \
135         ((expr) || (xfs_error_test_active && \
136          xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
137                         (rf))))
138 
139 extern int xfs_errortag_add(int error_tag, struct xfs_mount *mp);
140 extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud);
141 #else
142 #define XFS_TEST_ERROR(expr, mp, tag, rf)       (expr)
143 #define xfs_errortag_add(tag, mp)               (ENOSYS)
144 #define xfs_errortag_clearall(mp, loud)         (ENOSYS)
145 #endif /* DEBUG */
146 
147 /*
148  * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
149  *                      a panic by setting xfs_panic_mask in a sysctl.
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 #endif  /* __XFS_ERROR_H__ */
162 

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