modules.d/95nbd/nbd-generator.sh

   1 #!/bin/sh
   2
   3 type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
   4
   5 [ -z "$root" ] && root=$(getarg root=)
   6
   7 [ "${root%%:*}" = "nbd" ] || exit 0
   8
   9 GENERATOR_DIR="$2"
  10 [ -z "$GENERATOR_DIR" ] && exit 1
  11
  12 [ -d "$GENERATOR_DIR" ] || mkdir -p "$GENERATOR_DIR"
  13
  14 ROOTFLAGS="$(getarg rootflags)"
  15
  16 nroot=${root#nbd:}
  17 nbdserver=${nroot%%:*}; nroot=${nroot#*:}
  18 nbdport=${nroot%%:*}; nroot=${nroot#*:}
  19 nbdfstype=${nroot%%:*}; nroot=${nroot#*:}
  20 nbdflags=${nroot%%:*}
  21
  22 if [ "$nbdflags" = "$nbdfstype" ]; then
  23     unset nbdflags
  24 fi
  25 if [ "$nbdfstype" = "$nbdport" ]; then
  26     unset nbdfstype
  27 fi
  28
  29 [ -n "$nbdflags" ] && ROOTFLAGS="$nbdflags"
  30
  31 if getarg "ro"; then
  32     if [ -n "$ROOTFLAGS" ]; then
  33         ROOTFLAGS="$ROOTFLAGS,ro"
  34     else
  35         ROOTFLAGS="ro"
  36     fi
  37 fi
  38
  39 if [ -n "$nbdfstype" ]; then
  40     ROOTFSTYPE="$nbdfstype"
  41 else
  42     ROOTFSTYPE=$(getarg rootfstype=) || unset ROOTFSTYPE
  43 fi
  44
  45 {
  46     echo "[Unit]"
  47     echo "Before=initrd-root-fs.target"
  48     echo "[Mount]"
  49     echo "Where=/sysroot"
  50     echo "What=/dev/root"
  51     [ -n "$ROOTFSTYPE" ] && echo "Type=${ROOTFSTYPE}"
  52     [ -n "$ROOTFLAGS" ] && echo "Options=${ROOTFLAGS}"
  53 } > "$GENERATOR_DIR"/sysroot.mount
  54
  55 exit 0