/*
* SoftDog 0.07: A Software Watchdog Device
*
- * (c) Copyright 1996 Alan Cox <alan@redhat.com>, All Rights Reserved.
- * http://www.redhat.com
+ * (c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ * All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Added WDIOC_GETTIMEOUT and WDIOC_SETTIMOUT.
*
* 20020530 Joel Becker <joel.becker@oracle.com>
- * Added Matt Domsch's nowayout module option.
+ * Added Matt Domsch's nowayout module option.
*/
#include <linux/module.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/jiffies.h>
-
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#define PFX "SoftDog: "
#define TIMER_MARGIN 60 /* Default is 60 seconds */
static int soft_margin = TIMER_MARGIN; /* in seconds */
module_param(soft_margin, int, 0);
-MODULE_PARM_DESC(soft_margin, "Watchdog soft_margin in seconds. (0<soft_margin<65536, default=" __MODULE_STRING(TIMER_MARGIN) ")");
+MODULE_PARM_DESC(soft_margin,
+ "Watchdog soft_margin in seconds. (0 < soft_margin < 65536, default="
+ __MODULE_STRING(TIMER_MARGIN) ")");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#ifdef ONLY_TESTING
static int soft_noboot = 1;
#endif /* ONLY_TESTING */
module_param(soft_noboot, int, 0);
-MODULE_PARM_DESC(soft_noboot, "Softdog action, set to 1 to ignore reboots, 0 to reboot (default depends on ONLY_TESTING)");
+MODULE_PARM_DESC(soft_noboot,
+ "Softdog action, set to 1 to ignore reboots, 0 to reboot "
+ "(default depends on ONLY_TESTING)");
/*
* Our timer
if (soft_noboot)
printk(KERN_CRIT PFX "Triggered - Reboot ignored.\n");
- else
- {
+ else {
printk(KERN_CRIT PFX "Initiating system reboot.\n");
emergency_restart();
printk(KERN_CRIT PFX "Reboot didn't ?????\n");
softdog_stop();
module_put(THIS_MODULE);
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
set_bit(0, &orphan_timer);
softdog_keepalive();
}
return 0;
}
-static ssize_t softdog_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
+static ssize_t softdog_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
{
/*
* Refresh the timer.
*/
- if(len) {
+ if (len) {
if (!nowayout) {
size_t i;
return len;
}
-static int softdog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long softdog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_margin;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.identity = "Software Watchdog",
};
switch (cmd) {
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident,
- sizeof(ident)) ? -EFAULT : 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- softdog_keepalive();
- return 0;
- case WDIOC_SETTIMEOUT:
- if (get_user(new_margin, p))
- return -EFAULT;
- if (softdog_set_heartbeat(new_margin))
- return -EINVAL;
- softdog_keepalive();
- /* Fall */
- case WDIOC_GETTIMEOUT:
- return put_user(soft_margin, p);
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ softdog_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_margin, p))
+ return -EFAULT;
+ if (softdog_set_heartbeat(new_margin))
+ return -EINVAL;
+ softdog_keepalive();
+ /* Fall */
+ case WDIOC_GETTIMEOUT:
+ return put_user(soft_margin, p);
+ default:
+ return -ENOTTY;
}
}
static int softdog_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT) {
+ if (code == SYS_DOWN || code == SYS_HALT)
/* Turn the WDT off */
softdog_stop();
- }
return NOTIFY_DONE;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = softdog_write,
- .ioctl = softdog_ioctl,
+ .unlocked_ioctl = softdog_ioctl,
.open = softdog_open,
.release = softdog_release,
};
.notifier_call = softdog_notify_sys,
};
-static char banner[] __initdata = KERN_INFO "Software Watchdog Timer: 0.07 initialized. soft_noboot=%d soft_margin=%d sec (nowayout= %d)\n";
+static char banner[] __initdata = KERN_INFO "Software Watchdog Timer: 0.07 "
+ "initialized. soft_noboot=%d soft_margin=%d sec (nowayout= %d)\n";
static int __init watchdog_init(void)
{
int ret;
- /* Check that the soft_margin value is within it's range ; if not reset to the default */
+ /* Check that the soft_margin value is within it's range;
+ if not reset to the default */
if (softdog_set_heartbeat(soft_margin)) {
softdog_set_heartbeat(TIMER_MARGIN);
- printk(KERN_INFO PFX "soft_margin value must be 0<soft_margin<65536, using %d\n",
+ printk(KERN_INFO PFX
+ "soft_margin must be 0 < soft_margin < 65536, using %d\n",
TIMER_MARGIN);
}
ret = register_reboot_notifier(&softdog_notifier);
if (ret) {
- printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&softdog_miscdev);
if (ret) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&softdog_notifier);
return ret;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff