xref: /openbmc/linux/fs/xfs/xfs_error.h (revision 167ce4cb)
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