release/src/router/usbmodeswitch/usb_modeswitch.sh

   1 #!/bin/sh
   2 # part of usb_modeswitch 2.0.1
   3 device_in()
   4 {
   5         if [ ! -e /var/lib/usb_modeswitch/$1 ]; then
   6                 return 0
   7         fi
   8         while read line
   9         do
  10                 if [ $(expr "$line" : "$2:$3") != 0 ]; then
  11                         return 1
  12                 fi
  13         done </var/lib/usb_modeswitch/$1
  14         if [ $(expr "$line" : "$2:$3") != 0 ]; then
  15                 return 1
  16         fi
  17         return 0
  18 }
  19
  20 if [ $(expr "$1" : "--.*") ]; then
  21         p_id=$4
  22         if [ -z $p_id ]; then
  23                 prod=$5
  24                 if [ -z $prod ]; then
  25                         prod=$3
  26                 fi
  27                 prod=${prod%/*}
  28                 v_id=0x${prod%/*}
  29                 p_id=0x${prod#*/}
  30                 if [ "$v_id" = "0x" ]; then
  31                         v_id="0"
  32                         p_id="0"
  33                 fi
  34                 v_id="$(printf %04x $(($v_id)))"
  35                 p_id="$(printf %04x $(($p_id)))"
  36         else
  37                 v_id=$3
  38         fi
  39 fi
  40 PATH=/sbin:/usr/sbin:$PATH
  41 case "$1" in
  42         --driver-bind)
  43                 (
  44                 dir=$(ls -d /sys$2/ttyUSB* 2>/dev/null)
  45                 sleep 1
  46                 if [ ! -z "$dir" ]; then
  47                         exit 0
  48                 fi
  49                 set +e
  50                 device_in "bind_list" $v_id $p_id
  51                 if [ "$?" = "1" ]; then
  52                         id_attr="/sys/bus/usb-serial/drivers/option1/new_id"
  53                         if [ ! -e "$id_attr" ]; then
  54                                 modprobe option 2>/dev/null || true
  55                         fi
  56                         if [ -e "$id_attr" ]; then
  57                                 echo "$v_id $p_id ff" > $id_attr
  58                         else
  59                                 modprobe -r usbserial 2>/dev/null
  60                                 modprobe usbserial "vendor=0x$v_id" "product=0x$p_id" 2>/dev/null
  61                         fi
  62                 fi
  63                 ) &
  64                 exit 0
  65                 ;;
  66         --symlink-name)
  67                 device_in "link_list" $v_id $p_id
  68                 if [ "$?" = "1" ]; then
  69                         if [ -e "/usr/sbin/usb_modeswitch_dispatcher" ]; then
  70                                 exec usb_modeswitch_dispatcher $1 $2 2>>/dev/null
  71                         fi
  72                 fi
  73                 exit 0
  74                 ;;
  75 esac
  76 exec 1<&- 2<&- 5<&- 7<&-
  77 (
  78 count=20
  79 while [ $count != 0 ]; do
  80         if [ ! -e "/usr/sbin/usb_modeswitch_dispatcher" ]; then
  81                 sleep 1
  82                 count=$(($count - 1))
  83         else
  84                 if [ -e "/etc/init/usb-modeswitch-upstart.conf" ]; then
  85                         exec /sbin/initctl emit --no-wait usb-modeswitch-upstart UMS_PARAM=$1
  86                 elif [ -e "/etc/systemd/system/usb_modeswitch@.service" ]; then
  87                         exec /usr/bin/systemctl --no-block start usb_modeswitch@$1.service
  88                 else
  89                         exec /usr/sbin/usb_modeswitch_dispatcher --switch-mode $1 &
  90                 fi
  91                 exit 0
  92         fi
  93 done
  94 ) &
  95 exit 0