gh action

Signed-off-by: Hajime Tazaki <thehajime@gmail.com>

.github/workflows/ci.yml

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+on:
+  push:
+    branches:
+      - '**'
+  #pull_request:
+  #  branches:
+  #    - master
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.runs_on }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - displayTargetName: ubuntu-22.04
+            os: unix
+            runs_on: ubuntu-22.04
+            shell: bash
+            defconfig: defconfig
+          - displayTargetName: ubuntu-22.04 (nommu)
+            os: unix
+            runs_on: ubuntu-22.04
+            shell: bash
+            defconfig: x86_64_nommu_defconfig
+            kunit_opts: --kconfig_add CONFIG_MMU=n
+    timeout-minutes: 100
+    env:
+      CCACHE_DIR: ${{ github.workspace }}/.ccache
+      USE_CCACHE: 1
+
+    defaults:
+       run:
+         shell: ${{ matrix.shell }}
+
+    steps:
+      - name: Set env
+        shell: bash
+        run: |
+          echo "/usr/lib/ccache/bin:/usr/lib/ccache:${{ github.workspace }}/bin" >> $GITHUB_PATH
+          echo "export PATH=/usr/lib/ccache/bin:/usr/lib/ccache:${{ github.workspace }}/bin:$PATH" >> $HOME/.bashrc
+
+      - name: Checkout
+        uses: actions/checkout@v4
+      - uses: actions/cache@v4
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ${{ runner.os }}-${{ matrix.defconfig }}-ccache-build-${{ github.sha }}
+          restore-keys: ${{ runner.os }}-${{ matrix.defconfig }}-ccache-build-
+      - name: Install packages
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt update -y
+          sudo apt install -y ccache libseccomp-dev
+      - name: build-0
+        run: |
+          make ARCH=um ${{ matrix.defconfig }} O=build
+          make -j8 ARCH=um O=build
+      - name: Log in to docker.io
+        uses: docker/login-action@v3.2.0
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: image for test
+        run: |
+          container_id=$(docker create kollerr/alpine-test:latest)
+          #container_id=$(docker create alpine:latest)
+          docker export $container_id > alpine.tar
+          docker rm $container_id
+          mnt=$(mktemp -d)
+          dd if=/dev/zero of=alpine.ext4 bs=1 count=0 seek=1G
+          sudo chmod og+wr "alpine.ext4"
+          yes 2>/dev/null | mkfs.ext4 "alpine.ext4" || true
+          sudo mount "alpine.ext4" $mnt
+          sudo tar -xf alpine.tar -C $mnt
+
+          sudo mknod -m 666 $mnt/dev/null c 1 3
+          sudo mknod -m 666 $mnt/dev/zero c 1 5
+          sudo mknod -m 666 $mnt/dev/ptmx c 5 2
+          sudo mknod -m 666 $mnt/dev/tty c 5 0
+          sudo mknod -m 444 $mnt/dev/random c 1 8
+          sudo mknod -m 444 $mnt/dev/urandom c 1 9
+
+          sudo cp .github/workflows/busybox $mnt/bin/busybox
+          echo "/sbin/halt" >> .github/workflows/rcS
+          sudo cp .github/workflows/rcS $mnt/etc/init.d/
+          sudo cp .github/workflows/inittab $mnt/etc/
+          sudo umount $mnt
+      - name: test-0
+        run: |
+          sudo sh -c "echo 0 > /proc/sys/vm/mmap_min_addr"
+          ./build/vmlinux ubd0=./alpine.ext4 rw mem=1024m loglevel=8 console=tty init=/sbin/init 2>&1 | tee /tmp/log.txt
+          echo "========="
+          cat /tmp/log.txt
+      - name: kunit test
+        run: |
+          for config in `find ./ -name .kunitconfig | grep -v -E "kfence|sunrpc|handshake|kcsan|gpu" `; do \
+            echo "==" $config "==" ; \
+            ./tools/testing/kunit/kunit.py run --kunitconfig=$config ${{ matrix.kunit_opts }}
+          done
+      - name: build-1
+        run: |
+          make ARCH=um ${{ matrix.defconfig }}
+          make -j8 ARCH=um
+      - name: test-1
+        run: |
+          ./vmlinux ubd0=./alpine.ext4 rw mem=1024m loglevel=8 console=tty init=/sbin/init 2>&1 | tee /tmp/log.txt
+          echo "========="
+          cat /tmp/log.txt
+      #- name: Setup tmate session
+      #  uses: mxschmitt/action-tmate@v3
+
+  checkpatch:
+    runs-on: ubuntu-22.04
+    name: checkpatch
+    steps:
+      - name: Checkout
+        with:
+          fetch-depth: 0
+        uses: actions/checkout@v4
+      - name: Install pip dependencies
+        run: sudo pip install ply GitPython
+      #- name: Setup tmate session
+      #  uses: mxschmitt/action-tmate@v3
+      #  with:
+      #    detached: true
+      - name: Check coding style
+        run: |
+           git checkout -b tmp
+           git format-patch -o p1 v6.10..HEAD~1
+           ./scripts/checkpatch.pl --summary-file --ignore FILE_PATH_CHANGES p1/*.patch

.github/workflows/inittab

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+# /etc/inittab
+
+::sysinit:/etc/init.d/rcS
+
+::respawn:-/bin/sh
+
+# Stuff to do when restarting the init process
+::restart:/sbin/init
+
+# Stuff to do before rebooting
+::ctrlaltdel:/sbin/reboot
+::shutdown:/bin/umount -a -r
+::shutdown:/sbin/swapoff -a

.github/workflows/rcS

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+#!/bin/sh
+
+mount proc /proc -t proc
+/sbin/ifconfig lo 127.0.0.1 up
+/sbin/ifconfig eth0 10.0.0.2 up
+/sbin/ip route add default via 10.0.0.1 dev eth0
+
+export PATH=/home:/sbin:/usr/sbin:/bin:/usr/bin
+export TERM=linux
+
+# hanging
+#export PS1="\[$(tput bold)\]\[$(tput setaf 4)\][\[$(tput setaf 5)\]\u\[$(tput setaf 4)\]@\[$(tput setaf 5)\]\h \[$(tput setaf 2)\]\W\[$(tput setaf 4)\]]\\$ \[$(tput sgr0)\]"
+
+exec "$@"