modules.d/95zfcp_rules/module-setup.sh

   1 #!/bin/bash
   2
   3 # called by dracut
   4 cmdline() {
   5     is_zfcp() {
   6         local _dev=$1
   7         local _devpath=$(cd -P /sys/dev/block/$_dev ; echo $PWD)
   8         local _sdev _scsiid _hostno _lun _wwpn _ccw _port_type
   9         local _allow_lun_scan _is_npiv
  10
  11         _allow_lun_scan=$(cat /sys/module/zfcp/parameters/allow_lun_scan)
  12         [ "${_devpath#*/sd}" == "$_devpath" ] && return 1
  13         _sdev="${_devpath%%/block/*}"
  14         [ -e ${_sdev}/fcp_lun ] || return 1
  15         _scsiid="${_sdev##*/}"
  16         _hostno="${_scsiid%%:*}"
  17         [ -d /sys/class/fc_host/host${_hostno} ] || return 1
  18         _port_type=$(cat /sys/class/fc_host/host${_hostno}/port_type)
  19         case "$_port_type" in
  20             NPIV*)
  21                 _is_npiv=1
  22                 ;;
  23         esac
  24         _ccw=$(cat ${_sdev}/hba_id)
  25         if [ "$_is_npiv" ] && [ "$_allow_lun_scan" = "Y" ] ; then
  26             echo "rd.zfcp=${_ccw}"
  27         else
  28             _lun=$(cat ${_sdev}/fcp_lun)
  29             _wwpn=$(cat ${_sdev}/wwpn)
  30             echo "rd.zfcp=${_ccw},${_wwpn},${_lun}"
  31         fi
  32         return 0
  33     }
  34     [[ $hostonly ]] || [[ $mount_needs ]] && {
  35         for_each_host_dev_and_slaves_all is_zfcp
  36     } | sort | uniq
  37 }
  38
  39 # called by dracut
  40 check() {
  41     local _arch=$(uname -m)
  42     local _ccw
  43     [ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
  44     require_binaries /usr/lib/udev/collect || return 1
  45
  46     [[ $hostonly ]] || [[ $mount_needs ]] && {
  47         found=0
  48         for _ccw in /sys/bus/ccw/devices/*/host* ; do
  49             [ -d "$_ccw" ] || continue
  50             found=$(($found+1));
  51         done
  52         [ $found -eq 0 ] && return 255
  53     }
  54     return 0
  55 }
  56
  57 # called by dracut
  58 depends() {
  59     return 0
  60 }
  61
  62 # called by dracut
  63 install() {
  64     inst_multiple /usr/lib/udev/collect
  65     inst_hook cmdline 30 "$moddir/parse-zfcp.sh"
  66     if [[ $hostonly_cmdline == "yes" ]] ; then
  67         local _zfcp
  68
  69         for _zfcp in $(cmdline) ; do
  70             printf "%s\n" "$_zfcp" >> "${initdir}/etc/cmdline.d/94zfcp.conf"
  71         done
  72     fi
  73     if [[ $hostonly ]] ; then
  74         inst_rules_wildcard 51-zfcp-*.rules
  75         inst_rules_wildcard 41-s390x-zfcp-*.rules
  76     fi
  77 }