tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_ERROR_H__
19#define __XFS_ERROR_H__
20
21struct xfs_mount;
22
23extern void xfs_error_report(const char *tag, int level, struct xfs_mount *mp,
24 const char *filename, int linenum, void *ra);
25extern void xfs_corruption_error(const char *tag, int level,
26 struct xfs_mount *mp, void *p, const char *filename,
27 int linenum, void *ra);
28extern void xfs_verifier_error(struct xfs_buf *bp);
29
30#define XFS_ERROR_REPORT(e, lvl, mp) \
31 xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
32#define XFS_CORRUPTION_ERROR(e, lvl, mp, mem) \
33 xfs_corruption_error(e, lvl, mp, mem, \
34 __FILE__, __LINE__, __return_address)
35
36#define XFS_ERRLEVEL_OFF 0
37#define XFS_ERRLEVEL_LOW 1
38#define XFS_ERRLEVEL_HIGH 5
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/*
67 * error injection tags - the labels can be anything you want
68 * but each tag should have its own unique number
69 */
70
71#define XFS_ERRTAG_NOERROR 0
72#define XFS_ERRTAG_IFLUSH_1 1
73#define XFS_ERRTAG_IFLUSH_2 2
74#define XFS_ERRTAG_IFLUSH_3 3
75#define XFS_ERRTAG_IFLUSH_4 4
76#define XFS_ERRTAG_IFLUSH_5 5
77#define XFS_ERRTAG_IFLUSH_6 6
78#define XFS_ERRTAG_DA_READ_BUF 7
79#define XFS_ERRTAG_BTREE_CHECK_LBLOCK 8
80#define XFS_ERRTAG_BTREE_CHECK_SBLOCK 9
81#define XFS_ERRTAG_ALLOC_READ_AGF 10
82#define XFS_ERRTAG_IALLOC_READ_AGI 11
83#define XFS_ERRTAG_ITOBP_INOTOBP 12
84#define XFS_ERRTAG_IUNLINK 13
85#define XFS_ERRTAG_IUNLINK_REMOVE 14
86#define XFS_ERRTAG_DIR_INO_VALIDATE 15
87#define XFS_ERRTAG_BULKSTAT_READ_CHUNK 16
88#define XFS_ERRTAG_IODONE_IOERR 17
89#define XFS_ERRTAG_STRATREAD_IOERR 18
90#define XFS_ERRTAG_STRATCMPL_IOERR 19
91#define XFS_ERRTAG_DIOWRITE_IOERR 20
92#define XFS_ERRTAG_BMAPIFORMAT 21
93#define XFS_ERRTAG_FREE_EXTENT 22
94#define XFS_ERRTAG_RMAP_FINISH_ONE 23
95#define XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE 24
96#define XFS_ERRTAG_REFCOUNT_FINISH_ONE 25
97#define XFS_ERRTAG_BMAP_FINISH_ONE 26
98#define XFS_ERRTAG_AG_RESV_CRITICAL 27
99/*
100 * DEBUG mode instrumentation to test and/or trigger delayed allocation
101 * block killing in the event of failed writes. When enabled, all
102 * buffered writes are silenty dropped and handled as if they failed.
103 * All delalloc blocks in the range of the write (including pre-existing
104 * delalloc blocks!) are tossed as part of the write failure error
105 * handling sequence.
106 */
107#define XFS_ERRTAG_DROP_WRITES 28
108#define XFS_ERRTAG_LOG_BAD_CRC 29
109#define XFS_ERRTAG_LOG_ITEM_PIN 30
110#define XFS_ERRTAG_MAX 31
111
112/*
113 * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
114 */
115#define XFS_RANDOM_DEFAULT 100
116#define XFS_RANDOM_IFLUSH_1 XFS_RANDOM_DEFAULT
117#define XFS_RANDOM_IFLUSH_2 XFS_RANDOM_DEFAULT
118#define XFS_RANDOM_IFLUSH_3 XFS_RANDOM_DEFAULT
119#define XFS_RANDOM_IFLUSH_4 XFS_RANDOM_DEFAULT
120#define XFS_RANDOM_IFLUSH_5 XFS_RANDOM_DEFAULT
121#define XFS_RANDOM_IFLUSH_6 XFS_RANDOM_DEFAULT
122#define XFS_RANDOM_DA_READ_BUF XFS_RANDOM_DEFAULT
123#define XFS_RANDOM_BTREE_CHECK_LBLOCK (XFS_RANDOM_DEFAULT/4)
124#define XFS_RANDOM_BTREE_CHECK_SBLOCK XFS_RANDOM_DEFAULT
125#define XFS_RANDOM_ALLOC_READ_AGF XFS_RANDOM_DEFAULT
126#define XFS_RANDOM_IALLOC_READ_AGI XFS_RANDOM_DEFAULT
127#define XFS_RANDOM_ITOBP_INOTOBP XFS_RANDOM_DEFAULT
128#define XFS_RANDOM_IUNLINK XFS_RANDOM_DEFAULT
129#define XFS_RANDOM_IUNLINK_REMOVE XFS_RANDOM_DEFAULT
130#define XFS_RANDOM_DIR_INO_VALIDATE XFS_RANDOM_DEFAULT
131#define XFS_RANDOM_BULKSTAT_READ_CHUNK XFS_RANDOM_DEFAULT
132#define XFS_RANDOM_IODONE_IOERR (XFS_RANDOM_DEFAULT/10)
133#define XFS_RANDOM_STRATREAD_IOERR (XFS_RANDOM_DEFAULT/10)
134#define XFS_RANDOM_STRATCMPL_IOERR (XFS_RANDOM_DEFAULT/10)
135#define XFS_RANDOM_DIOWRITE_IOERR (XFS_RANDOM_DEFAULT/10)
136#define XFS_RANDOM_BMAPIFORMAT XFS_RANDOM_DEFAULT
137#define XFS_RANDOM_FREE_EXTENT 1
138#define XFS_RANDOM_RMAP_FINISH_ONE 1
139#define XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE 1
140#define XFS_RANDOM_REFCOUNT_FINISH_ONE 1
141#define XFS_RANDOM_BMAP_FINISH_ONE 1
142#define XFS_RANDOM_AG_RESV_CRITICAL 4
143#define XFS_RANDOM_DROP_WRITES 1
144#define XFS_RANDOM_LOG_BAD_CRC 1
145#define XFS_RANDOM_LOG_ITEM_PIN 1
146
147#ifdef DEBUG
148extern int xfs_errortag_init(struct xfs_mount *mp);
149extern void xfs_errortag_del(struct xfs_mount *mp);
150extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression,
151 const char *file, int line, unsigned int error_tag);
152#define XFS_TEST_ERROR(expr, mp, tag) \
153 ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag)))
154
155extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
156extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
157 unsigned int tag_value);
158extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
159extern int xfs_errortag_clearall(struct xfs_mount *mp);
160#else
161#define xfs_errortag_init(mp) (0)
162#define xfs_errortag_del(mp)
163#define XFS_TEST_ERROR(expr, mp, tag) (expr)
164#define xfs_errortag_set(mp, tag, val) (ENOSYS)
165#define xfs_errortag_add(mp, tag) (ENOSYS)
166#define xfs_errortag_clearall(mp) (ENOSYS)
167#endif /* DEBUG */
168
169/*
170 * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
171 * a panic by setting xfs_panic_mask in a sysctl.
172 */
173#define XFS_NO_PTAG 0
174#define XFS_PTAG_IFLUSH 0x00000001
175#define XFS_PTAG_LOGRES 0x00000002
176#define XFS_PTAG_AILDELETE 0x00000004
177#define XFS_PTAG_ERROR_REPORT 0x00000008
178#define XFS_PTAG_SHUTDOWN_CORRUPT 0x00000010
179#define XFS_PTAG_SHUTDOWN_IOERROR 0x00000020
180#define XFS_PTAG_SHUTDOWN_LOGERROR 0x00000040
181#define XFS_PTAG_FSBLOCK_ZERO 0x00000080
182
183#endif /* __XFS_ERROR_H__ */