modules.d/80cms/cmssetup.sh

   1 #!/bin/bash
   2
   3 type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
   4
   5 function sysecho () {
   6     file="$1"
   7     shift
   8     local i=1
   9     while [ $i -le 10 ] ; do
  10         if [ ! -f "$file" ]; then
  11             sleep 1
  12             i=$((i+1))
  13         else
  14             break
  15         fi
  16     done
  17     local status
  18     read status < "$file"
  19     if [[ ! $status == $* ]]; then
  20         [ -f "$file" ] && echo $* > "$file"
  21     fi
  22 }
  23
  24 function dasd_settle() {
  25     local dasd_status=/sys/bus/ccw/devices/$1/status
  26     if [ ! -f $dasd_status ]; then
  27         return 1
  28     fi
  29     local i=1
  30     while [ $i -le 60 ] ; do
  31         local status
  32         read status < $dasd_status
  33         case $status in
  34             online|unformatted)
  35                 return 0 ;;
  36             *)
  37                 sleep 0.1
  38                 i=$((i+1)) ;;
  39         esac
  40     done
  41     return 1
  42 }
  43
  44 function dasd_settle_all() {
  45     for dasdccw in $(while read line || [ -n "$line" ]; do echo "${line%%(*}"; done < /proc/dasd/devices) ; do
  46         if ! dasd_settle $dasdccw ; then
  47             echo $"Could not access DASD $dasdccw in time"
  48             return 1
  49         fi
  50     done
  51     return 0
  52 }
  53
  54 # prints a canonocalized device bus ID for a given devno of any format
  55 function canonicalize_devno()
  56 {
  57     case ${#1} in
  58         3) echo "0.0.0${1}" ;;
  59         4) echo "0.0.${1}" ;;
  60         *) echo "${1}" ;;
  61     esac
  62     return 0
  63 }
  64
  65 # read file from CMS and write it to /tmp
  66 function readcmsfile() # $1=dasdport $2=filename
  67 {
  68     local dev
  69     local numcpus
  70     local devname
  71     local ret=0
  72     if [ $# -ne 2 ]; then return; fi
  73     # precondition: udevd created dasda block device node
  74     if ! dasd_cio_free -d $1 ; then
  75         echo $"DASD $1 could not be cleared from device blacklist"
  76         return 1
  77     fi
  78
  79     modprobe dasd_mod dasd=$CMSDASD
  80     modprobe dasd_eckd_mod
  81     udevadm settle
  82
  83     # precondition: dasd_eckd_mod driver incl. dependencies loaded,
  84     #               dasd_mod must be loaded without setting any DASD online
  85     dev=$(canonicalize_devno $1)
  86     numcpus=$(
  87         while read line || [ -n "$line" ]; do
  88             if strstr "$line" "# processors"; then
  89                 echo ${line##*:};
  90                 break;
  91             fi;
  92         done < /proc/cpuinfo
  93     )
  94
  95     if [ ${numcpus} -eq 1 ]; then
  96         echo 1 > /sys/bus/ccw/devices/$dev/online
  97     else
  98         if ! sysecho /sys/bus/ccw/devices/$dev/online 1; then
  99             echo $"DASD $dev could not be set online"
 100             return 1
 101         fi
 102         udevadm settle
 103         if ! dasd_settle $dev ; then
 104             echo $"Could not access DASD $dev in time"
 105             return 1
 106         fi
 107     fi
 108
 109     udevadm settle
 110
 111     devname=$(cd /sys/bus/ccw/devices/$dev/block; set -- *; [ -b /dev/$1 ] && echo $1)
 112     devname=${devname:-dasda}
 113
 114     [[ -d /mnt ]] || mkdir /mnt
 115     if cmsfs-fuse --to=UTF-8 -a /dev/$devname /mnt; then
 116         cat /mnt/$2 > /run/initramfs/$2
 117         umount /mnt || umount -l /mnt
 118         udevadm settle
 119     else
 120         echo $"Could not read conf file $2 on CMS DASD $1."
 121         ret=1
 122     fi
 123
 124     if ! sysecho /sys/bus/ccw/devices/$dev/online 0; then
 125         echo $"DASD $dev could not be set offline again"
 126         #return 1
 127     fi
 128     udevadm settle
 129
 130     # unbind all dasds to unload the dasd modules for a clean start
 131     ( cd /sys/bus/ccw/drivers/dasd-eckd; for i in *.*; do echo $i > unbind;done)
 132     udevadm settle
 133     modprobe -r dasd_eckd_mod
 134     udevadm settle
 135     modprobe -r dasd_diag_mod
 136     udevadm settle
 137     modprobe -r dasd_mod
 138     udevadm settle
 139     return $ret
 140 }
 141
 142 processcmsfile()
 143 {
 144     source /tmp/cms.conf
 145     SUBCHANNELS="$(echo $SUBCHANNELS | sed 'y/ABCDEF/abcdef/')"
 146
 147     if [[ $NETTYPE ]]; then
 148         (
 149             echo -n $NETTYPE,$SUBCHANNELS
 150             [[ $PORTNAME ]] && echo -n ",portname=$PORTNAME"
 151             [[ $LAYER2 ]] && echo -n ",layer2=$LAYER2"
 152             [[ "$NETTYPE" = "ctc" ]] && [[ $CTCPROT ]] && echo -n ",protocol=$CTCPROT"
 153             echo
 154         ) >> /etc/ccw.conf
 155
 156         OLDIFS=$IFS
 157         IFS=,
 158         read -a subch_array <<< "indexzero,$SUBCHANNELS"
 159         IFS=$OLDIFS
 160         devbusid=${subch_array[1]}
 161         if [ "$NETTYPE" = "ctc" ]; then
 162             driver="ctcm"
 163         else
 164             driver=$NETTYPE
 165         fi
 166
 167         printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="%s", KERNELS=="%s", ENV{INTERFACE}=="?*", RUN+="/sbin/initqueue --onetime --unique --name cmsifup-$env{INTERFACE} /sbin/cmsifup $env{INTERFACE}"\n' "$driver" "$devbusid" > /etc/udev/rules.d/99-cms.rules
 168         # remove the default net rules
 169         rm -f -- /etc/udev/rules.d/91-default-net.rules
 170         [[ -f /etc/udev/rules.d/90-net.rules ]] \
 171             || printf 'SUBSYSTEM=="net", ACTION=="online", RUN+="/sbin/initqueue --onetime --env netif=$env{INTERFACE} source_hook initqueue/online"\n' >> /etc/udev/rules.d/99-cms.rules
 172         udevadm control --reload
 173         znet_cio_free
 174     fi
 175
 176     if [[ $DASD ]] && [[ $DASD != "none" ]]; then
 177         echo $DASD | normalize_dasd_arg > /etc/dasd.conf
 178         echo "options dasd_mod dasd=$DASD" > /etc/modprobe.d/dasd_mod.conf
 179         dasd_cio_free
 180     fi
 181
 182     unset _do_zfcp
 183     for i in ${!FCP_*}; do
 184         echo "${!i}" | while read port rest || [ -n "$port" ]; do
 185             case $port in
 186                 *.*.*)
 187                     ;;
 188                 *.*)
 189                     port="0.$port"
 190                     ;;
 191                 *)
 192                     port="0.0.$port"
 193                     ;;
 194             esac
 195             echo $port $rest >> /etc/zfcp.conf
 196         done
 197         _do_zfcp=1
 198     done
 199     [[ $_do_zfcp ]] && zfcp_cio_free
 200     unset _do_zfcp
 201 }
 202
 203 [[ $CMSDASD ]] || CMSDASD=$(getarg "CMSDASD=")
 204 [[ $CMSCONFFILE ]] || CMSCONFFILE=$(getarg "CMSCONFFILE=")
 205
 206 # Parse configuration
 207 if [ -n "$CMSDASD" -a -n "$CMSCONFFILE" ]; then
 208     if readcmsfile $CMSDASD $CMSCONFFILE; then
 209         ln -s /run/initramfs/$CMSCONFFILE /tmp/$CMSCONFFILE
 210         ln -s /run/initramfs/$CMSCONFFILE /tmp/cms.conf
 211         processcmsfile
 212     fi
 213 fi