util/scripts/update_submodules

   1 #!/usr/bin/env bash
   2 #
   3 # SPDX-License-Identifier: GPL-2.0-only
   4
   5 # Description:
   6 # Check all submodules for updates.  If there are more than a minimum
   7 # number of changes, create a commit to update the submodule to the
   8 # new version.
   9
  10 export LANG=C
  11 export LC_ALL=C
  12 export TZ=UTC0
  13
  14 min_commits=10
  15
  16 TOP=${PWD}
  17 SUBMODULES_WITH_UPDATES=0
  18 submodule_dirs=$(git submodule foreach pwd | grep -v Entering)
  19
  20 (
  21 echo "Checking submodules..."
  22 for submodule in $submodule_dirs; do
  23         cd "$submodule" || exit 1
  24         initial_commit_id="$(git log --pretty='%h' -n 1)"
  25         initial_commit_description="$(git log --pretty='%ci - (%s)' -n 1)"
  26         git fetch 2>/dev/null
  27         updated_commit_id="$(git log --pretty='%h' -n 1 origin/master)"
  28         updated_commit_description="$(git log --pretty='%ci - (%s)' -n 1 "${updated_commit_id}")"
  29         if [ "${initial_commit_id}" = "${updated_commit_id}" ]; then
  30                 # echo "No updates for ${submodule}"
  31                 continue
  32         fi
  33         SUBMODULES_WITH_UPDATES+=1
  34         update_count="$(git log --oneline "${initial_commit_id}..${updated_commit_id}" | wc -l)"
  35         echo "${update_count} new commits for ${submodule}"
  36         if [ "${update_count}" -ge "${min_commits}" ]; then
  37                 echo "Creating commit to update ${submodule##*/} submodule"
  38                 git checkout "${updated_commit_id}" > /dev/null 2>&1
  39                 cd "${TOP}" || exit 1
  40                 sleep 1
  41                 git add "${submodule}" > /dev/null 2>&1 || exit 1
  42                 sleep 1
  43                 git commit -s -F- > /dev/null 2>&1 <<EOF
  44 Update ${submodule##*/} submodule to upstream master
  45
  46 Updating from commit id ${initial_commit_id}:
  47 $initial_commit_description
  48
  49 to commit id ${updated_commit_id}:
  50 ${updated_commit_description}
  51
  52 This brings in ${update_count} new commits.
  53 EOF
  54                 sleep 1
  55         fi
  56 done
  57
  58 if [ "${SUBMODULES_WITH_UPDATES}" = "0" ]; then
  59         echo "No submodules with any updates."
  60 fi
  61 )