backfire(4) [debian man page]

backfire(4)							      Driver							       backfire(4)

NAME

       backfire - send a signal from driver to user

DESCRIPTION

       The  backfire  driver  reads  a numerical string that is sent to the /dev/backfire device and sends the corresponding signal to the calling
       user program. Reading from /dev/backfire returns the time of the day when the most recent sent request was serviced or 0, if a sent request
       was  not  yet received. The time of the day is displayed in seconds since 1970-01-01 00:00:00 UTC followed by the fraction of the second in
       microseconds separated by a comma.

PURPOSE

       The backfire driver is normally used in combination with the program sendme to benchmark the performance of  the  kernel's  signal  sending
       capabilities.

EXAMPLES

       head -1 /dev/backfire
       0,0
       trap "echo Got signal 7" 7
       echo 7 >/dev/backfire
       Got signal 7
       head -1 /dev/backfire
       1234567890,123456

AUTHORS

       Carsten Emde <C.Emde@osadl.org>

SEE ALSO

       sendme(8)

									0.1							       backfire(4)

ntwdt(7D)																 ntwdt(7D)

NAME

       ntwdt - Netra--based application watchdog timer driver

SYNOPSIS

       /dev/ntwdt

       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.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcakr.u		   |
       +-----------------------------+-----------------------------+
       |Architecture		     |SPARC			   |
       +-----------------------------+-----------------------------+

       driver.conf(4), attributes(5)

       Writing Device Drivers

								    05 Feb 2005 							 ntwdt(7D)