[pve-devel] [RFC kernel 2/2] debian/scripts: add import-upstream-tag

[Fabian Grünbichler]

$ import-upstream-tag path/to/kernel/submodule path/to/kernel/patches tag [rebase]

fetches 'tag' from default remote, optionally imports, rebases and exports
patchqueue, checks out 'tag' and commits the resulting changes.

Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
---
 debian/scripts/import-upstream-tag | 115 +++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100755 debian/scripts/import-upstream-tag

diff --git a/debian/scripts/import-upstream-tag b/debian/scripts/import-upstream-tag
new file mode 100755
index 0000000..59daa5b
--- /dev/null
+++ b/debian/scripts/import-upstream-tag
@@ -0,0 +1,115 @@
+#!/bin/bash
+
+set -e
+
+top=$(pwd)
+
+# parameters
+kernel_submodule=
+kernel_patchdir=
+new_tag=
+rebase=
+
+# generated based on new_tag
+pq_branch=
+# previously checked out in submodule
+old_ref=
+
+function cleanup_pq_branch {
+    if [[ -n $pq_branch ]]; then
+	echo "cleaning up PQ branch '$pq_branch'"
+	cd "${top}/${kernel_submodule}"
+	git checkout --quiet $old_ref
+	git reset --hard
+	git branch -D "$pq_branch"
+    fi
+}
+
+function error_exit {
+    echo "$1"
+    set +e
+
+    cleanup_pq_branch
+
+    cd "${top}"
+
+    exit 1
+}
+
+if [ "$#" -lt 3 ]; then
+    error_exit "at least three parameters required."
+fi
+
+kernel_submodule=$1
+if [ ! -d "${kernel_submodule}" ]; then
+    error_exit "'${kernel_submodule}' must be a directory!"
+fi
+
+kernel_patchdir=$2
+if [ ! -d "${kernel_patchdir}" ]; then
+    error_exit "'${kernel_patchdir}' must be a directory!"
+fi
+
+new_tag=$3
+rebase=$4
+
+if [[ -n $(git status --untracked-files=no --porcelain) ]]; then
+    error_exit "working directory unclean, aborting"
+fi
+
+
+cd "${kernel_submodule}"
+## check for tag and fetch if needed
+echo "checking for tag '${new_tag}'"
+if [[ -z $(git tag -l "${new_tag}") ]]; then
+    echo "tag not found, fetching and retrying"
+    git fetch --tags
+fi
+if [[ -z $(git tag -l "${new_tag}") ]]; then
+    error_exit "tag not found, aborting"
+fi
+echo "tag found"
+cd "${top}"
+
+if [[ -n "$rebase" ]]; then
+    echo ""
+    echo "automatic patchqueue rebase enabled"
+    cd "${kernel_submodule}"
+    ## preparing patch queue branch
+    old_ref=$(git rev-parse HEAD)
+    pq_branch="auto_pq/${new_tag}"
+    cd "${top}"
+
+    echo "previous HEAD: ${old_ref}"
+
+    echo ""
+    "${top}/debian/scripts/import-patchqueue" "${kernel_submodule}" "${kernel_patchdir}" "${pq_branch}" || error_exit "failed to import patchqueue"
+
+    cd "${kernel_submodule}"
+    ## rebase patches
+    echo ""
+    echo "rebasing patchqueue on top of '${new_tag}'"
+    git rebase "${new_tag}"
+    cd "${top}"
+
+    ## regenerate exported patch queue
+    echo ""
+    "${top}/debian/scripts/export-patchqueue" "${kernel_submodule}" "${kernel_patchdir}" "${new_tag}" || error_exit "failed to export patchqueue"
+
+    cleanup_pq_branch
+    cd "${top}"
+    pq_branch=
+fi
+
+cd "${kernel_submodule}"
+echo ""
+echo "checking out '${new_tag}' in submodule"
+git checkout --quiet "${new_tag}"
+cd "${top}"
+
+echo ""
+echo "committing results"
+git commit --verbose -s -m "update sources to ${new_tag}" -m "(generated with debian/scripts/import-upstream-tag)" "${kernel_submodule}"
+if [[ -n "$rebase" ]]; then
+    git commit --verbose -s -m "rebase patches on top of ${new_tag}" -m "(generated with debian/scripts/import-upstream-tag)" "${kernel_patchdir}"
+fi
-- 
2.14.2