1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/*
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*
* Solaris Porting Layer (SPL) Error Implementation.
*/
#include <sys/sysmacros.h>
#include <sys/cmn_err.h>
/*
* It is often useful to actually have the panic crash the node so you
* can then get notified of the event, get the crashdump for later
* analysis and other such goodies.
* But we would still default to the current default of not to do that.
*/
/* BEGIN CSTYLED */
unsigned int spl_panic_halt;
module_param(spl_panic_halt, uint, 0644);
MODULE_PARM_DESC(spl_panic_halt, "Cause kernel panic on assertion failures");
/* END CSTYLED */
void
spl_dumpstack(void)
{
printk("Showing stack for process %d\n", current->pid);
dump_stack();
}
EXPORT_SYMBOL(spl_dumpstack);
int
spl_panic(const char *file, const char *func, int line, const char *fmt, ...)
{
const char *newfile;
char msg[MAXMSGLEN];
va_list ap;
newfile = strrchr(file, '/');
if (newfile != NULL)
newfile = newfile + 1;
else
newfile = file;
va_start(ap, fmt);
(void) vsnprintf(msg, sizeof (msg), fmt, ap);
va_end(ap);
printk(KERN_EMERG "%s", msg);
printk(KERN_EMERG "PANIC at %s:%d:%s()\n", newfile, line, func);
if (spl_panic_halt)
panic("%s", msg);
spl_dumpstack();
/* Halt the thread to facilitate further debugging */
set_current_state(TASK_UNINTERRUPTIBLE);
while (1)
schedule();
/* Unreachable */
return (1);
}
EXPORT_SYMBOL(spl_panic);
void
vcmn_err(int ce, const char *fmt, va_list ap)
{
char msg[MAXMSGLEN];
vsnprintf(msg, MAXMSGLEN, fmt, ap);
switch (ce) {
case CE_IGNORE:
break;
case CE_CONT:
printk("%s", msg);
break;
case CE_NOTE:
printk(KERN_NOTICE "NOTICE: %s\n", msg);
break;
case CE_WARN:
printk(KERN_WARNING "WARNING: %s\n", msg);
break;
case CE_PANIC:
printk(KERN_EMERG "PANIC: %s\n", msg);
spl_dumpstack();
/* Halt the thread to facilitate further debugging */
set_current_state(TASK_UNINTERRUPTIBLE);
while (1)
schedule();
}
} /* vcmn_err() */
EXPORT_SYMBOL(vcmn_err);
void
cmn_err(int ce, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vcmn_err(ce, fmt, ap);
va_end(ap);
} /* cmn_err() */
EXPORT_SYMBOL(cmn_err);
|
