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ntwdt(7D)			    Devices			     ntwdt(7D)

NAME
       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:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWcakr.u		   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Architecture		     │SPARC			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       driver.conf(4), attributes(5)

       Writing Device Drivers

SunOS 5.10			  05 Feb 2005			     ntwdt(7D)

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