firmware.agent

这是关于usb等方面的热拔插源代码

#!/bin/sh
#
# Firmware-specific hotplug policy agent.
#
# Kernel firmware hotplug params include:
#
#       ACTION=%s [add or remove]
#       DEVPATH=%s [in 2.5 kernels, /sys/$DEVPATH]
#       FIRMWARE=%s
#
# HISTORY:
#
# 24-Jul-2003   Initial version of "new" hotplug agent.
#
# $Id: firmware.agent,v 1.3 2004/03/14 15:52:56 ukai Exp $
#

cd /etc/hotplug
. ./hotplug.functions
# DEBUG=yes export DEBUG

# directory of the firmware files
FIRMWARE_DIR=/lib/firmware

# mountpoint of sysfs
SYSFS=$(sed -n 's/^.* \([^ ]*\) sysfs .*$/\1/p' /proc/mounts)

# use /proc for 2.4 kernels
if [ "$SYSFS" = "" ]; then
    SYSFS=/proc
fi

#
# What to do with this firmware hotplug event?
#
case "$ACTION" in

add)
    if [ ! -e $SYSFS/$DEVPATH/loading ]; then
        sleep 1
    fi

    if [ -f "$FIRMWARE_DIR/$FIRMWARE" ]; then
        echo 1 > $SYSFS/$DEVPATH/loading
        cp "$FIRMWARE_DIR/$FIRMWARE" $SYSFS/$DEVPATH/data
        echo 0 > $SYSFS/$DEVPATH/loading
    else
        echo -1 > $SYSFS/$DEVPATH/loading
    fi

    ;;

remove)
    ;;

*)
    mesg "Firmware '$ACTION' event not supported"
    exit 1
    ;;

esac