extras/ide-devfs.sh

   1 #!/bin/sh
   2
   3 # udev external PROGRAM script
   4 # return devfs-names for ide-devices
   5 # BUS="ide", KERNEL="hd*", PROGRAM="/etc/udev/ide-devfs.sh %k %b %n", NAME="%k", SYMLINK="%c{1} %c{2}"
   6
   7 HOST="${2%\.[0-9]}"
   8 TARGET="${2#[0-9]\.}"
   9
  10 if [ -z "${HOST#[13579]}" ]; then
  11         HOST=$((${HOST} - 1))
  12         BUS="1"
  13 else
  14         BUS="0"
  15 fi
  16
  17 get_dev_number() {
  18         local x=
  19         local num=0
  20         local MEDIA=
  21         local DRIVE="${1%%[0-9]*}"
  22
  23         for x in /proc/ide/*/media; do
  24                 if [ -e "${x}" ]; then
  25                         MEDIA=`cat ${x}`
  26                         if [ "${MEDIA}" = "$2" ]; then
  27                                 num=$((${num} + 1))
  28                         fi
  29                         if [ "${x}" = "/proc/ide/${DRIVE}/media" ]; then
  30                                 break
  31                         fi
  32                 fi
  33         done
  34
  35         echo $((${num} - 1))
  36 }
  37
  38 if [ -z "$3" ]; then
  39         MEDIA=`cat /proc/ide/${1}/media`
  40         if [ "${MEDIA}" = "cdrom" ]; then
  41                 echo ide/host${HOST}/bus${BUS}/target${TARGET}/lun0/cd cdroms/cdrom`get_dev_number $1 cdrom`
  42         elif [ "${MEDIA}" = "disk" ]; then
  43                 echo ide/host${HOST}/bus${BUS}/target${TARGET}/lun0/disc discs/disc`get_dev_number $1 disk`/disc
  44         fi
  45 else
  46         echo ide/host${HOST}/bus${BUS}/target${TARGET}/lun0/part$3 discs/disc`get_dev_number $1 disk`/part$3
  47 fi