mkinitcpio-nfs-utils/trunk/initcpio-hook-net

   1 # vim: set ft=sh:
   2 run_hook() {
   3     local line i net_mac bootif_mac bootif_dev defaultrootpath defaultserver
   4     # These variables will be parsed from /tmp/net-*.conf generated by ipconfig
   5     local DEVICE
   6     local IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4GATEWAY IPV4DNS0 IPV4DNS1
   7     local HOSTNAME DNSDOMAIN NISDOMAIN ROOTSERVER ROOTPATH
   8     local filename
   9     # /tmp/net-*.conf
  10
  11     if [ -z "${ip}" -a -n "${nfsaddrs}" ]; then
  12         ip="${nfsaddrs}"
  13     fi
  14
  15     if [ -n "${ip}" ]; then
  16         if [ -n "${BOOTIF}" ]; then
  17             bootif_mac=${BOOTIF#01-}
  18             bootif_mac=${bootif_mac//-/:}
  19             for i in /sys/class/net/*/address; do
  20                 read net_mac < ${i}
  21                 if [ "${bootif_mac}" == "${net_mac}" ]; then
  22                     bootif_dev=${i#/sys/class/net/}
  23                     bootif_dev=${bootif_dev%/address}
  24                     break
  25                 fi
  26             done
  27             ip="${ip}::${bootif_dev}"
  28         fi
  29
  30         # setup network and save some values
  31         ipconfig "ip=${ip}"
  32
  33         for conf in /tmp/net-*.conf; do
  34             [ -f "$conf" ] && . "$conf"
  35         done
  36
  37         # calculate nfs_server, nfs_path and nfs_option for later nfs mount
  38         if [ "${root}" = "/dev/nfs" -o "${nfsroot}" != "" ]; then
  39             # parse ROOTPATH if defined by dhcp server
  40             if [ -n "${ROOTPATH}" ]; then
  41                 line="${ROOTPATH}"
  42                 nfs_server="${line%%:*}"
  43                 [ "${nfs_server}" = "${line}" ] && nfs_server="${ROOTSERVER}"
  44                 defaultserver="${nfs_server}"
  45                 line="${line#*:}"
  46                 nfs_path="${line}"
  47                 defaultrootpath="${nfs_path}"
  48             else
  49                 # define a default ROOTPATH
  50                 if [ "${ROOTPATH}" = "" ]; then
  51                     defaultrootpath="/tftpboot/${IPV4ADDR}"
  52                 fi
  53             fi
  54
  55             # parse nfsroot if present (overrides ROOTPATH)
  56             if [ -n "${nfsroot}" ]; then
  57                 line="${nfsroot}"
  58                 nfs_server="${line%%:*}"
  59                 [ -z "${nfs_server}" ] && nfs_server="${defaultserver}"
  60                 line="${line#*:}"
  61                 nfs_path="${line%%,*}"
  62                 line="${line#"${nfs_path}"}"
  63                 [ -z "${nfs_path}" ] && nfs_path="${defaultrootpath}"
  64                 nfs_option="${line#","}"
  65             fi
  66
  67             # ensure root and filesystem type are set proper for nfs boot
  68             root="/dev/nfs"
  69             rootfstype="nfs"
  70
  71             echo "NFS-Mount: ${nfs_server}:${nfs_path}"
  72
  73             # set mount handler for NFS
  74             mount_handler="nfs_mount_handler"
  75         fi
  76     fi
  77 }
  78
  79 nfs_mount_handler() {
  80     if [ -z "$nfs_server" -o -z "$nfs_path" ]; then
  81         err "Unable to mount root filesystem over NFS: wrong parameters."
  82         echo "You are being dropped to a recovery shell"
  83         echo "    Type 'exit' to try and continue booting"
  84         launch_interactive_shell
  85         msg "Trying to continue (this will most likely fail) ..."
  86     fi
  87     nfsmount ${nfs_option:+-o ${nfs_option}} "${nfs_server}:${nfs_path}" "$1"
  88 }
  89
  90 # vim: set ft=sh ts=4 sw=4 et: