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__ */
114
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