1 /*
2 * Copyright (c) 2000-2001,2005 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 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_types.h"
21 #include "xfs_log.h"
22 #include "xfs_inum.h"
23 #include "xfs_trans.h"
24 #include "xfs_sb.h"
25 #include "xfs_ag.h"
26 #include "xfs_mount.h"
27 #include "xfs_bmap_btree.h"
28 #include "xfs_dinode.h"
29 #include "xfs_inode.h"
30 #include "xfs_utils.h"
31 #include "xfs_error.h"
32
33 #ifdef DEBUG
34
35 int xfs_etrap[XFS_ERROR_NTRAP] = {
36 0,
37 };
38
39 int
xfs_error_trap(int e)40 xfs_error_trap(int e)
41 {
42 int i;
43
44 if (!e)
45 return 0;
46 for (i = 0; i < XFS_ERROR_NTRAP; i++) {
47 if (xfs_etrap[i] == 0)
48 break;
49 if (e != xfs_etrap[i])
50 continue;
51 xfs_notice(NULL, "%s: error %d", __func__, e);
52 BUG();
53 break;
54 }
55 return e;
56 }
57
58 int xfs_etest[XFS_NUM_INJECT_ERROR];
59 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
60 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
61 int xfs_error_test_active;
62
63 int
xfs_error_test(int error_tag,int * fsidp,char * expression,int line,char * file,unsigned long randfactor)64 xfs_error_test(int error_tag, int *fsidp, char *expression,
65 int line, char *file, unsigned long randfactor)
66 {
67 int i;
68 int64_t fsid;
69
70 if (random32() % randfactor)
71 return 0;
72
73 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
74
75 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
76 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
77 xfs_warn(NULL,
78 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
79 expression, file, line, xfs_etest_fsname[i]);
80 return 1;
81 }
82 }
83
84 return 0;
85 }
86
87 int
xfs_errortag_add(int error_tag,xfs_mount_t * mp)88 xfs_errortag_add(int error_tag, xfs_mount_t *mp)
89 {
90 int i;
91 int len;
92 int64_t fsid;
93
94 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
95
96 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
97 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
98 xfs_warn(mp, "error tag #%d on", error_tag);
99 return 0;
100 }
101 }
102
103 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
104 if (xfs_etest[i] == 0) {
105 xfs_warn(mp, "Turned on XFS error tag #%d",
106 error_tag);
107 xfs_etest[i] = error_tag;
108 xfs_etest_fsid[i] = fsid;
109 len = strlen(mp->m_fsname);
110 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
111 strcpy(xfs_etest_fsname[i], mp->m_fsname);
112 xfs_error_test_active++;
113 return 0;
114 }
115 }
116
117 xfs_warn(mp, "error tag overflow, too many turned on");
118
119 return 1;
120 }
121
122 int
xfs_errortag_clearall(xfs_mount_t * mp,int loud)123 xfs_errortag_clearall(xfs_mount_t *mp, int loud)
124 {
125 int64_t fsid;
126 int cleared = 0;
127 int i;
128
129 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
130
131
132 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
133 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
134 xfs_etest[i] != 0) {
135 cleared = 1;
136 xfs_warn(mp, "Clearing XFS error tag #%d",
137 xfs_etest[i]);
138 xfs_etest[i] = 0;
139 xfs_etest_fsid[i] = 0LL;
140 kmem_free(xfs_etest_fsname[i]);
141 xfs_etest_fsname[i] = NULL;
142 xfs_error_test_active--;
143 }
144 }
145
146 if (loud || cleared)
147 xfs_warn(mp, "Cleared all XFS error tags for filesystem");
148
149 return 0;
150 }
151 #endif /* DEBUG */
152
153 void
xfs_error_report(const char * tag,int level,struct xfs_mount * mp,const char * filename,int linenum,inst_t * ra)154 xfs_error_report(
155 const char *tag,
156 int level,
157 struct xfs_mount *mp,
158 const char *filename,
159 int linenum,
160 inst_t *ra)
161 {
162 if (level <= xfs_error_level) {
163 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
164 "Internal error %s at line %d of file %s. Caller 0x%p\n",
165 tag, linenum, filename, ra);
166
167 xfs_stack_trace();
168 }
169 }
170
171 void
xfs_corruption_error(const char * tag,int level,struct xfs_mount * mp,void * p,const char * filename,int linenum,inst_t * ra)172 xfs_corruption_error(
173 const char *tag,
174 int level,
175 struct xfs_mount *mp,
176 void *p,
177 const char *filename,
178 int linenum,
179 inst_t *ra)
180 {
181 if (level <= xfs_error_level)
182 xfs_hex_dump(p, 16);
183 xfs_error_report(tag, level, mp, filename, linenum, ra);
184 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
185 }
186