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Code Editor : state-funcs

#!/bin/sh
# Paul Sladen, 2006-03-28, 2007-03-26
# Library functions to check/change status of wireless

# Return 0 if there is, allowing you to write   if isAnyWirelessPoweredOn; then ...
isAnyWirelessPoweredOn()
{
    for DEVICE in /sys/class/net/* ; do
	if [ -d $DEVICE/wireless ]; then
	    for RFKILL in $DEVICE/phy80211/rfkill*/state $DEVICE/device/rfkill/rfkill*/state
	    do
		if [ -r "$RFKILL" ] && [ "$(cat "$RFKILL")" -eq 1 ]
		then
		    return 0
		fi
	    done
	    # if any of the wireless devices are turned on then return success
	    if [ -r $DEVICE/device/power/state ] && [ "`cat $DEVICE/device/power/state`" -eq 0 ]
	    then
		return 0
	    fi
	    if [ -r $DEVICE/device/rf_kill ] && [ "`cat $DEVICE/device/rf_kill`" -eq 0 ]
	    then
		return 0
	    fi
	fi
    done

# otherwise return failure
    return 1
}

# Takes no parameters, toggles all wireless devices.
# TODO: Should possible toggle all wireless devices to the state of the first one.
# Attempts to use 'rf_kill' first, and then tries 'power/state', though that
# will fail on >=2.6.18 kernels since upstream removed the functionality...
toggleAllWirelessStates()
{
    for DEVICE in /sys/class/net/* ; do
	if [ -d $DEVICE/wireless ] ; then
	    # $DEVICE is a wireless device.

FOUND=
	    # Yes, that's right... the new interface reverses the truth values.
	    ON=1
	    OFF=0
	    for CONTROL in $DEVICE/device/rfkill/rfkill*/state; do
		if [ -w "$CONTROL" ]; then
		    FOUND=1

if [ "$(cat "$CONTROL")" = "$ON" ] ; then
			# It's powered on. Switch it off.
			echo -n "$OFF" > "$CONTROL"
		    else
			# It's powered off. Switch it on.
			echo -n "$ON" > "$CONTROL"
		    fi
		fi
	    done
	    # it might be safe to assume that a device only supports one
	    # interface at a time; but just in case, we short-circuit
	    # here to avoid toggling the power twice
	    if [ -n "$FOUND" ]; then
		continue
	    fi

ON=0
	    OFF=1  # 1 for rf_kill, 2 for power/state
	    for CONTROL in $DEVICE/device/rf_kill $DEVICE/device/power/state ; do
		if [ -w $CONTROL ] ; then
		    # We have a way of controlling the device, lets try
		    if [ "`cat $CONTROL`" = 0 ] ; then
			# It's powered on. Switch it off.
			if echo -n $OFF > $CONTROL ; then 
			    break
			else
			    OFF=2 # for power/state, second time around
			fi
		    else
			# It's powered off. Switch it on.
			if echo -n $ON > $CONTROL ; then
			    break
			fi
		    fi
		fi
	    done
	fi
    done
}

# Pass '1' to blink suspending LED and '0' to stop LED
setLEDThinkpadSuspending()
{
    action=`test "$1" -ne 0 && echo blink || echo off`
    test -w /proc/acpi/ibm/led && echo -n 7 "$action" > /proc/acpi/ibm/led
}

${this.title}

Code Editor : state-funcs