cirros-testvm/src-cirros/bin/grab-kernels

   1 #!/bin/sh
   2
   3 burl="https://launchpad.net/ubuntu/+archive/primary/+files/linux-image"
   4 outdir="./download"
   5 def_arches="i386 x86_64 arm powerpc ppc64 ppc64le aarch64"
   6
   7 error() { echo "$@" 1>&2; }
   8 fail() { [ $# -eq 0 ] || error "$@"; exit 1; }
   9 dl() {
  10    local url="$1" target="$2" tfile="" t=""
  11    [ -f "$target" ] && return
  12    t=$(dirname "$target")
  13    tfile=$(mktemp "$t/.${0##*/}.XXXXXX") || return
  14    wget "$url" -O "$tfile" &&
  15       mv "$tfile" "$target" ||
  16       { t=$?; rm -f "$tfile"; return $t; }
  17 }
  18
  19 [ "$1" = "--outdir" ] && { outdir="$1" && shift; }
  20 kver="$1"
  21 shift
  22
  23 if [ $# -eq 0 ]; then
  24    set -- ${def_arches}
  25 fi
  26
  27 [ -d "$outdir" ] || mkdir -p "$outdir" ||
  28    fail "failed mkdir $outdir"
  29
  30
  31 [ -n "$kver" ] || fail "must give kernel version"
  32
  33 # version like 3.13.0-52.86
  34 #              3.19.0-20.20~14.04.1
  35
  36 kpart=${kver%-*}
  37 upart=${kver#*-}
  38 abi=${upart%%.*}
  39 kmajor=${kpart%%.*}
  40 kminor=${kpart#*.}; kminor=${kminor%.*}
  41 kmicro=${kpart#*.*.}
  42
  43 for arch in "$@"; do
  44     xarch=$arch;
  45     [ "$arch" = "x86_64" ] && xarch="amd64";
  46     if [ "$kmajor.$kminor" = "3.2" ]; then
  47         case "$arch" in
  48             x86_64|i386) flav="virtual";;
  49             arm) flav="omap"; xarch="armel";;
  50             powerpc) flav="powerpc64-smp";;
  51             *) fail "unknown kernel:arch for $kver:$arch"
  52         esac
  53     elif [ "$kmajor.$kminor" = "3.13" -o "$kmajor.$kminor" = "3.19" ]; then
  54         case "$arch" in
  55             arm) xarch="armhf"; flav="generic";;
  56             aarch64) xarch=arm64; flav="generic";;
  57             powerpc|ppc64) xarch=powerpc; flav="powerpc64-smp";;
  58             ppc64le) xarch="ppc64el"; flav="generic";;
  59             x86_64|i386|arm64) flav="generic";;
  60             *) fail "unknown kernel:arch for $kver:$arch"
  61         esac
  62     else
  63         fail "unknown kernel $kver ($kmajor.$kminor)"
  64     fi
  65     url="$burl-${kmajor}.${kminor}.${kmicro}-${abi}-${flav}_${kver}_${xarch}.deb"
  66     dl "$url" "$outdir/${url##*/}" || fail "failed dl $url"
  67     ln -sf ${url##*/} "$outdir/kernel-${arch}.deb" ||
  68       fail "failed symlink for $outdir/kernel-$arch.deb"
  69 done
  70