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 struct xfs_mount;
  22
  23 extern void xfs_error_report(const char *tag, int level, struct xfs_mount *mp,
  24                         const char *filename, int linenum, void *ra);
  25 extern void xfs_corruption_error(const char *tag, int level,
  26                         struct xfs_mount *mp, void *p, const char *filename,
  27                         int linenum, void *ra);
  28 extern void xfs_verifier_error(struct xfs_buf *bp);
  29
  30 #define XFS_ERROR_REPORT(e, lvl, mp)    \
  31         xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
  32 #define XFS_CORRUPTION_ERROR(e, lvl, mp, mem)   \
  33         xfs_corruption_error(e, lvl, mp, mem, \
  34                              __FILE__, __LINE__, __return_address)
  35
  36 #define XFS_ERRLEVEL_OFF        0
  37 #define XFS_ERRLEVEL_LOW        1
  38 #define XFS_ERRLEVEL_HIGH       5
  39
  40 /*
  41  * Macros to set EFSCORRUPTED & return/branch.
  42  */
  43 #define XFS_WANT_CORRUPTED_GOTO(mp, x, l)       \
  44         { \
  45                 int fs_is_ok = (x); \
  46                 ASSERT(fs_is_ok); \
  47                 if (unlikely(!fs_is_ok)) { \
  48                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
  49                                          XFS_ERRLEVEL_LOW, mp); \
  50                         error = -EFSCORRUPTED; \
  51                         goto l; \
  52                 } \
  53         }
  54
  55 #define XFS_WANT_CORRUPTED_RETURN(mp, x)        \
  56         { \
  57                 int fs_is_ok = (x); \
  58                 ASSERT(fs_is_ok); \
  59                 if (unlikely(!fs_is_ok)) { \
  60                         XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
  61                                          XFS_ERRLEVEL_LOW, mp); \
  62                         return -EFSCORRUPTED; \
  63                 } \
  64         }
  65
  66 #ifdef DEBUG
  67 extern int xfs_errortag_init(struct xfs_mount *mp);
  68 extern void xfs_errortag_del(struct xfs_mount *mp);
  69 extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression,
  70                 const char *file, int line, unsigned int error_tag);
  71 #define XFS_TEST_ERROR(expr, mp, tag)           \
  72         ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag)))
  73
  74 extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
  75 extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
  76                 unsigned int tag_value);
  77 extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
  78 extern int xfs_errortag_clearall(struct xfs_mount *mp);
  79 #else
  80 #define xfs_errortag_init(mp)                   (0)
  81 #define xfs_errortag_del(mp)
  82 #define XFS_TEST_ERROR(expr, mp, tag)           (expr)
  83 #define xfs_errortag_set(mp, tag, val)          (ENOSYS)
  84 #define xfs_errortag_add(mp, tag)               (ENOSYS)
  85 #define xfs_errortag_clearall(mp)               (ENOSYS)
  86 #endif /* DEBUG */
  87
  88 /*
  89  * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
  90  *                      a panic by setting xfs_panic_mask in a sysctl.
  91  */
  92 #define         XFS_NO_PTAG                     0
  93 #define         XFS_PTAG_IFLUSH                 0x00000001
  94 #define         XFS_PTAG_LOGRES                 0x00000002
  95 #define         XFS_PTAG_AILDELETE              0x00000004
  96 #define         XFS_PTAG_ERROR_REPORT           0x00000008
  97 #define         XFS_PTAG_SHUTDOWN_CORRUPT       0x00000010
  98 #define         XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
  99 #define         XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040
 100 #define         XFS_PTAG_FSBLOCK_ZERO           0x00000080
 101
 102 #endif  /* __XFS_ERROR_H__ */