fs/xfs/xfs_error.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6 #ifndef __XFS_ERROR_H__
   7 #define __XFS_ERROR_H__
   8
   9 struct xfs_mount;
  10
  11 extern void xfs_error_report(const char *tag, int level, struct xfs_mount *mp,
  12                         const char *filename, int linenum,
  13                         xfs_failaddr_t failaddr);
  14 extern void xfs_corruption_error(const char *tag, int level,
  15                         struct xfs_mount *mp, const void *buf, size_t bufsize,
  16                         const char *filename, int linenum,
  17                         xfs_failaddr_t failaddr);
  18 void xfs_buf_corruption_error(struct xfs_buf *bp, xfs_failaddr_t fa);
  19 extern void xfs_buf_verifier_error(struct xfs_buf *bp, int error,
  20                         const char *name, const void *buf, size_t bufsz,
  21                         xfs_failaddr_t failaddr);
  22 extern void xfs_verifier_error(struct xfs_buf *bp, int error,
  23                         xfs_failaddr_t failaddr);
  24 extern void xfs_inode_verifier_error(struct xfs_inode *ip, int error,
  25                         const char *name, const void *buf, size_t bufsz,
  26                         xfs_failaddr_t failaddr);
  27
  28 #define XFS_ERROR_REPORT(e, lvl, mp)    \
  29         xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
  30 #define XFS_CORRUPTION_ERROR(e, lvl, mp, buf, bufsize)  \
  31         xfs_corruption_error(e, lvl, mp, buf, bufsize, \
  32                              __FILE__, __LINE__, __return_address)
  33
  34 #define XFS_ERRLEVEL_OFF        0
  35 #define XFS_ERRLEVEL_LOW        1
  36 #define XFS_ERRLEVEL_HIGH       5
  37
  38 /* Dump 128 bytes of any corrupt buffer */
  39 #define XFS_CORRUPTION_DUMP_LEN         (128)
  40
  41 #ifdef DEBUG
  42 extern int xfs_errortag_init(struct xfs_mount *mp);
  43 extern void xfs_errortag_del(struct xfs_mount *mp);
  44 extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression,
  45                 const char *file, int line, unsigned int error_tag);
  46 #define XFS_TEST_ERROR(expr, mp, tag)           \
  47         ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag)))
  48 bool xfs_errortag_enabled(struct xfs_mount *mp, unsigned int tag);
  49 #define XFS_ERRORTAG_DELAY(mp, tag)             \
  50         do { \
  51                 might_sleep(); \
  52                 if (!xfs_errortag_enabled((mp), (tag))) \
  53                         break; \
  54                 xfs_warn_ratelimited((mp), \
  55 "Injecting %ums delay at file %s, line %d, on filesystem \"%s\"", \
  56                                 (mp)->m_errortag[(tag)], __FILE__, __LINE__, \
  57                                 (mp)->m_super->s_id); \
  58                 mdelay((mp)->m_errortag[(tag)]); \
  59         } while (0)
  60
  61 extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
  62 extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
  63                 unsigned int tag_value);
  64 extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
  65 extern int xfs_errortag_clearall(struct xfs_mount *mp);
  66 #else
  67 #define xfs_errortag_init(mp)                   (0)
  68 #define xfs_errortag_del(mp)
  69 #define XFS_TEST_ERROR(expr, mp, tag)           (expr)
  70 #define XFS_ERRORTAG_DELAY(mp, tag)             ((void)0)
  71 #define xfs_errortag_set(mp, tag, val)          (ENOSYS)
  72 #define xfs_errortag_add(mp, tag)               (ENOSYS)
  73 #define xfs_errortag_clearall(mp)               (ENOSYS)
  74 #endif /* DEBUG */
  75
  76 /*
  77  * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
  78  *                      a panic by setting fs.xfs.panic_mask in a sysctl.
  79  */
  80 #define         XFS_NO_PTAG                     0u
  81 #define         XFS_PTAG_IFLUSH                 (1u << 0)
  82 #define         XFS_PTAG_LOGRES                 (1u << 1)
  83 #define         XFS_PTAG_AILDELETE              (1u << 2)
  84 #define         XFS_PTAG_ERROR_REPORT           (1u << 3)
  85 #define         XFS_PTAG_SHUTDOWN_CORRUPT       (1u << 4)
  86 #define         XFS_PTAG_SHUTDOWN_IOERROR       (1u << 5)
  87 #define         XFS_PTAG_SHUTDOWN_LOGERROR      (1u << 6)
  88 #define         XFS_PTAG_FSBLOCK_ZERO           (1u << 7)
  89 #define         XFS_PTAG_VERIFIER_ERROR         (1u << 8)
  90
  91 #define         XFS_PTAG_MASK   (XFS_PTAG_IFLUSH | \
  92                                  XFS_PTAG_LOGRES | \
  93                                  XFS_PTAG_AILDELETE | \
  94                                  XFS_PTAG_ERROR_REPORT | \
  95                                  XFS_PTAG_SHUTDOWN_CORRUPT | \
  96                                  XFS_PTAG_SHUTDOWN_IOERROR | \
  97                                  XFS_PTAG_SHUTDOWN_LOGERROR | \
  98                                  XFS_PTAG_FSBLOCK_ZERO | \
  99                                  XFS_PTAG_VERIFIER_ERROR)
 100
 101 #define XFS_PTAG_STRINGS \
 102         { XFS_NO_PTAG,                  "none" }, \
 103         { XFS_PTAG_IFLUSH,              "iflush" }, \
 104         { XFS_PTAG_LOGRES,              "logres" }, \
 105         { XFS_PTAG_AILDELETE,           "aildelete" }, \
 106         { XFS_PTAG_ERROR_REPORT ,       "error_report" }, \
 107         { XFS_PTAG_SHUTDOWN_CORRUPT,    "corrupt" }, \
 108         { XFS_PTAG_SHUTDOWN_IOERROR,    "ioerror" }, \
 109         { XFS_PTAG_SHUTDOWN_LOGERROR,   "logerror" }, \
 110         { XFS_PTAG_FSBLOCK_ZERO,        "fsb_zero" }, \
 111         { XFS_PTAG_VERIFIER_ERROR,      "verifier" }
 112
 113 #endif  /* __XFS_ERROR_H__ */