94 lines
1.9 KiB
Plaintext
94 lines
1.9 KiB
Plaintext
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#!/bin/sh
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#
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# Load tracer module and create tracer device node.
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#
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MODULE="tracer"
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MAIN_DEVICE="tracer"
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USER_DEVICE="tracerU"
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GROUP="root"
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MODE="664"
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start() {
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if [ -e /dev/${MAIN_DEVICE} -o -e /dev/${USER_DEVICE} ]
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then
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# tell the user about what we are doing
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echo "Deleting old tracer nodes: /dev/tracer and /dev/tracerU"
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# remove stale nodes
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rm -f /dev/${MAIN_DEVICE}
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rm -f /dev/${USER_DEVICE}
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fi
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# look for the major number
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MAJOR=`/bin/grep " ${MODULE}$" /proc/devices | cut -d" " -f1`
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# does the device exist?
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if [ ${MAJOR} ]
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then
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echo "Found tracer device with major number:" ${MAJOR}
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else
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echo "Loading tracer kernel module: "
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# invoke modprobe
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/sbin/modprobe ${MODULE}
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MAJOR=`/bin/grep " ${MODULE}$" /proc/devices | cut -d" " -f1`
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if [ ${MAJOR} ]
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then
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echo "Found tracer device with major number:" ${MAJOR}
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else
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echo "Did not find tracer device ... /dev entries not created ..."
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exit 1
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fi
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fi
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# tell the user about what we are doing
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echo "Creating new tracer nodes: /dev/tracer and /dev/tracerU"
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# create the character special file
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/bin/mknod /dev/${MAIN_DEVICE} c ${MAJOR} 0
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/bin/mknod /dev/${USER_DEVICE} c ${MAJOR} 1
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# set permissions and ownership
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/bin/chgrp ${GROUP} /dev/${MAIN_DEVICE}
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/bin/chmod ${MODE} /dev/${MAIN_DEVICE}
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/bin/chgrp ${GROUP} /dev/${USER_DEVICE}
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/bin/chmod ${MODE} /dev/${USER_DEVICE}
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}
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stop() {
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# tell the user about what we are doing
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echo "Deleting tracer nodes: /dev/tracer and /dev/tracerU"
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# remove nodes
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rm -f /dev/${MAIN_DEVICE}
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rm -f /dev/${USER_DEVICE}
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if lsmod | /bin/grep "^${MODULE} "
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then
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echo -n "Removing tracer kernel module: "
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# invoke modprobe -r
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/sbin/modprobe -r ${MODULE}
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echo "OK"
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fi
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}
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restart() {
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stop
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start
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}
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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restart|reload)
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restart
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;;
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*)
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echo $"Usage: $0 {start|stop|restart}"
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exit 1
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esac
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exit $?
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