ntwdt(7D) Devices ntwdt(7D)NAMEntwdt - Netra—based application watchdog timer driver
SYNOPSIS
/dev/ntwdt
DESCRIPTION
The ntwdt driver is a multithreaded, loadable, non-STREAMS pseudo
driver that provides an application with an interface for controlling a
system watchdog timer.
The ntwdt driver implements a virtual watchdog timer that a privileged
application (Effective UID == 0) controls via IOCTLs.
CONFIGURATION
You configure the ntwdt driver by modifying the contents of the
ntwdt.conf file.
ERRORS
An open() fails if:
EPERM Effective user ID is not zero.
ENOENT /dev/ntwdt is not present or driver is not
installed.
EAGAIN /dev/ntwdt has already been successfully
open()'d.
FILES
/dev/ntwdt
Special character device.
kernel/drv/sparcv9/ntwdt
SPARC ntwdt driver binary.
kernel/drv/ntwdt.conf
Driver configuraton file.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWcakr.u │
├─────────────────────────────┼─────────────────────────────┤
│Architecture │SPARC │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdriver.conf(4), attributes(5)
Writing Device Drivers
SunOS 5.10 05 Feb 2005 ntwdt(7D)