50 lines
1.3 KiB
Bash
Executable File
50 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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PATH=/usr/local/sbin:/usr/local/bin:$PATH
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XSERVER_START_CMD=
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XSERVER_STOP_CMD=
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if [ -f /etc/init.d/snail-xserver ]; then
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XSERVER_START_CMD="/etc/init.d/snail-xserver start"
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XSERVER_STOP_CMD="/etc/init.d/snail-xserver stop"
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elif [ -f /etc/systemd/system/snail-xserver.service ]; then
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XSERVER_START_CMD="systemctl start snail-xserver.service"
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XSERVER_STOP_CMD="systemctl stop snail-xserver.service"
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else
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echo "Error: snail-xservice not found ;-("
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exit -1
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fi
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LOCK_FILE=/tmp/.snail.lock
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FIFO_FILE=/tmp/.snail.fifo
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$XSERVER_STOP_CMD && snail.nv_pwr_off # stop X service
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sigterm ()
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{
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rm -f $LOCK_FILE
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rm -f $FIFO_FILE
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exit 0
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}
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trap sigterm SIGTERM
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touch $LOCK_FILE && chown root:video $LOCK_FILE && chmod 660 $LOCK_FILE # create lock file
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rm -f $FIFO_FILE && mkfifo --mode 660 $FIFO_FILE && chgrp video $FIFO_FILE # create fifo
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{
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echo >$FIFO_FILE | cat $FIFO_FILE >/dev/null # flush fifo
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flock -n 9 # make exclusive lock
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while [ 1 ]; do
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read <$FIFO_FILE
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echo >$FIFO_FILE | cat $FIFO_FILE >/dev/null # flush fifo
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snail.nv_pwr_on && $XSERVER_START_CMD # starting X server
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flock -u 9
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echo >$FIFO_FILE | cat $FIFO_FILE >/dev/null # flush fifo
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flock 9
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echo >$FIFO_FILE | cat $FIFO_FILE >/dev/null # flush fifo
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$XSERVER_STOP_CMD && snail.nv_pwr_off # stopping X server
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done
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} 9>$LOCK_FILE
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