modules.d/90livenet/fetch-liveupdate.sh

   1 #!/bin/bash
   2 # fetch-liveupdate - fetch an update image for dmsquash-live media.
   3 # this gets called by the "initqueue/online" hook for each network interface
   4 # that comes online.
   5
   6 # no updates requested? we're not needed.
   7 [ -e /tmp/liveupdates.info ] || return 0
   8
   9 command -v getarg >/dev/null || . /lib/dracut-lib.sh
  10 command -v fetch_url >/dev/null || . /lib/url-lib.sh
  11 command -v unpack_img >/dev/null || . /lib/img-lib.sh
  12
  13 read url < /tmp/liveupdates.info
  14
  15 info "fetching live updates from $url"
  16
  17 fetch_url "$url" /tmp/updates.img
  18 if [ $? != 0 ]; then
  19     warn "failed to fetch update image!"
  20     warn "url: $url"
  21     return 1
  22 fi
  23
  24 unpack_img /tmp/updates.img /updates.tmp.$$
  25 if [ $? != 0 ]; then
  26     warn "failed to unpack update image!"
  27     warn "url: $url"
  28     return 1
  29 fi
  30 copytree /updates.tmp.$$ /updates
  31 mv /tmp/liveupdates.info /tmp/liveupdates.done