mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-26 11:19:32 +03:00
4b393c50ae
No semantic changes. Change /************\ and \************/ to /* and */ Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*
|
|
* 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>
|
|
#include <linux/ratelimit.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.
|
|
*/
|
|
unsigned int spl_panic_halt;
|
|
module_param(spl_panic_halt, uint, 0644);
|
|
MODULE_PARM_DESC(spl_panic_halt,
|
|
"Cause kernel panic on assertion failures");
|
|
|
|
/*
|
|
* Limit the number of stack traces dumped to not more than 5 every
|
|
* 60 seconds to prevent denial-of-service attacks from debug code.
|
|
*/
|
|
DEFINE_RATELIMIT_STATE(dumpstack_ratelimit_state, 60 * HZ, 5);
|
|
|
|
void
|
|
spl_dumpstack(void)
|
|
{
|
|
if (__ratelimit(&dumpstack_ratelimit_state)) {
|
|
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 - 1, 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);
|