Add experimental helpers for calling kernel functions and writing to memory #899

	name: DCO Check

	on:
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review]

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	check:
	if: ${{ !github.event.pull_request.draft }}
	runs-on: ubuntu-latest
	steps:
	- name: Checkout commit logs
	run: \|
	git init
	git fetch --filter=blob:none "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY" "$GITHUB_BASE_REF" "$GITHUB_REF"
	- name: Check for DCO sign-offs
	run: \|
	no_sign_off="$(git log --no-merges --grep=Signed-off-by --invert-grep "FETCH_HEAD..$GITHUB_SHA")"
	if [ -z "$no_sign_off" ]; then
	echo "All commits have a Developer Certificate of Origin sign-off"
	else
	echo "The following commits are missing a Developer Certificate of Origin sign-off;"
	echo "see https://github.com/osandov/drgn/blob/main/CONTRIBUTING.rst#signing-off"
	echo
	echo "$no_sign_off"
	exit 1
	fi

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