From e3f0f43bb81119eafeb04b66cb7deacd5c1db743 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 13 Oct 2019 20:00:26 +0200
Subject: Initial commit

---
 build-one.bash | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100755 build-one.bash

(limited to 'build-one.bash')

diff --git a/build-one.bash b/build-one.bash
new file mode 100755
index 0000000..3844271
--- /dev/null
+++ b/build-one.bash
@@ -0,0 +1,62 @@
+#!/bin/bash
+set -ex
+
+[[ $# -eq 1 ]] || { echo "Usage: $0 KERNEL_NAME" >&2; exit 1; }
+BASE="$(readlink -f "$(dirname "$(readlink -f "$0")")")"
+KERNEL_DIR="$BASE/kernels/$1"
+[[ -d $KERNEL_DIR ]] || { echo "Error: '$0' does not exist" >&2; exit 1; }
+
+# Step 1) Account for already built modules by hard linking new hashes to the old names.
+first=""
+while IFS='|' read -r hash ver; do
+	if [[ -f $BASE/out/wireguard-$hash.ko ]]; then
+		first="$hash"
+		break
+	fi
+done < "$KERNEL_DIR/version-hashes.txt"
+if [[ -n $first ]]; then
+	while IFS='|' read -r hash ver; do
+		[[ -f $BASE/out/wireguard-$hash.ko ]] || ln "$BASE/out/wireguard-$first.ko" "$BASE/out/wireguard-$hash.ko"
+	done < "$KERNEL_DIR/version-hashes.txt"
+	exit 0
+fi
+
+# Step 2) Make working directory.
+D="$(mktemp -d)"
+trap 'rm -rf "$D"' INT TERM EXIT
+cd "$D"
+
+# Step 3) Initialize repo with manifests and fetch repositories.
+mkdir -p manifest
+cd manifest
+git init
+git config user.email "$(id -un)@$(hostname)"
+git config user.name "$(id -un)"
+cp "$KERNEL_DIR/manifest.xml" default.xml
+git add default.xml
+git commit -m "Initial commit"
+cd ..
+repo init -u ./manifest
+mkdir -p .repo/local_manifests
+cp "$BASE/files/wireguard.xml" .repo/local_manifests/
+repo sync
+
+# Step 4) Inject shim module and launch build.
+mkdir -p wireguard
+cp "$BASE/files/shim.make" wireguard/Makefile
+exec 9>&1
+read -r output < <("$BASH" "$KERNEL_DIR/do.bash" 7>&1 >&9)
+exec 9>-
+[[ -f $output ]]
+
+# Step 5) Copy first module out and hard link the rest.
+mkdir -p "$BASE/out"
+first=""
+while IFS='|' read -r hash vers; do
+	if [[ -z $first ]]; then
+		cp "$output" "$BASE/out/wireguard-$hash.ko"
+		first="$hash"
+	else
+		ln "$BASE/out/wireguard-$first.ko" "$BASE/out/wireguard-$hash.ko"
+	fi
+done < "$KERNEL_DIR/version-hashes.txt"
-- 
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