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, void *buf, size_t bufsize,
16 			const char *filename, int linenum,
17 			xfs_failaddr_t failaddr);
18 extern void xfs_buf_verifier_error(struct xfs_buf *bp, int error,
19 			const char *name, void *buf, size_t bufsz,
20 			xfs_failaddr_t failaddr);
21 extern void xfs_verifier_error(struct xfs_buf *bp, int error,
22 			xfs_failaddr_t failaddr);
23 extern void xfs_inode_verifier_error(struct xfs_inode *ip, int error,
24 			const char *name, void *buf, size_t bufsz,
25 			xfs_failaddr_t failaddr);
26 
27 #define	XFS_ERROR_REPORT(e, lvl, mp)	\
28 	xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
29 #define	XFS_CORRUPTION_ERROR(e, lvl, mp, buf, bufsize)	\
30 	xfs_corruption_error(e, lvl, mp, buf, bufsize, \
31 			     __FILE__, __LINE__, __return_address)
32 
33 #define XFS_ERRLEVEL_OFF	0
34 #define XFS_ERRLEVEL_LOW	1
35 #define XFS_ERRLEVEL_HIGH	5
36 
37 /* Dump 128 bytes of any corrupt buffer */
38 #define XFS_CORRUPTION_DUMP_LEN		(128)
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__ */
103