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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  
49  extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
50  extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
51  		unsigned int tag_value);
52  extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
53  extern int xfs_errortag_clearall(struct xfs_mount *mp);
54  #else
55  #define xfs_errortag_init(mp)			(0)
56  #define xfs_errortag_del(mp)
57  #define XFS_TEST_ERROR(expr, mp, tag)		(expr)
58  #define xfs_errortag_set(mp, tag, val)		(ENOSYS)
59  #define xfs_errortag_add(mp, tag)		(ENOSYS)
60  #define xfs_errortag_clearall(mp)		(ENOSYS)
61  #endif /* DEBUG */
62  
63  /*
64   * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
65   *			a panic by setting xfs_panic_mask in a sysctl.
66   */
67  #define		XFS_NO_PTAG			0u
68  #define		XFS_PTAG_IFLUSH			(1u << 0)
69  #define		XFS_PTAG_LOGRES			(1u << 1)
70  #define		XFS_PTAG_AILDELETE		(1u << 2)
71  #define		XFS_PTAG_ERROR_REPORT		(1u << 3)
72  #define		XFS_PTAG_SHUTDOWN_CORRUPT	(1u << 4)
73  #define		XFS_PTAG_SHUTDOWN_IOERROR	(1u << 5)
74  #define		XFS_PTAG_SHUTDOWN_LOGERROR	(1u << 6)
75  #define		XFS_PTAG_FSBLOCK_ZERO		(1u << 7)
76  #define		XFS_PTAG_VERIFIER_ERROR		(1u << 8)
77  
78  #define XFS_PTAG_STRINGS \
79  	{ XFS_NO_PTAG,			"none" }, \
80  	{ XFS_PTAG_IFLUSH,		"iflush" }, \
81  	{ XFS_PTAG_LOGRES,		"logres" }, \
82  	{ XFS_PTAG_AILDELETE,		"aildelete" }, \
83  	{ XFS_PTAG_ERROR_REPORT	,	"error_report" }, \
84  	{ XFS_PTAG_SHUTDOWN_CORRUPT,	"corrupt" }, \
85  	{ XFS_PTAG_SHUTDOWN_IOERROR,	"ioerror" }, \
86  	{ XFS_PTAG_SHUTDOWN_LOGERROR,	"logerror" }, \
87  	{ XFS_PTAG_FSBLOCK_ZERO,	"fsb_zero" }, \
88  	{ XFS_PTAG_VERIFIER_ERROR,	"verifier" }
89  
90  #endif	/* __XFS_ERROR_H__ */
91