ntwdt

- 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:

See Also

driver.conf(4), attributes(5)

Writing Device Drivers