From 3ae962852858988fbbab40032686ae2e9f3fd001 Mon Sep 17 00:00:00 2001
From: Balint Reczey <balint.reczey@canonical.com>
Date: Thu, 2 May 2019 19:51:29 +0200
Subject: [PATCH] Build WSL rootfs tarball

LP: #1827930
---
 debian/control                                |  1 +
 .../ubuntu-cpc/hooks.d/base/series/base       |  1 +
 live-build/ubuntu-cpc/hooks.d/base/series/wsl |  2 +
 live-build/ubuntu-cpc/hooks.d/base/wsl.binary | 52 +++++++++++++++++++
 4 files changed, 56 insertions(+)
 create mode 100644 live-build/ubuntu-cpc/hooks.d/base/series/wsl
 create mode 100755 live-build/ubuntu-cpc/hooks.d/base/wsl.binary

diff --git a/debian/control b/debian/control
index 9a9c1a69..7e84d2d5 100644
--- a/debian/control
+++ b/debian/control
@@ -10,6 +10,7 @@ Package: livecd-rootfs
 Architecture: any
 Depends: ${misc:Depends},
          apt-utils,
+         attr,
          debootstrap,
          distro-info,
          dosfstools,
diff --git a/live-build/ubuntu-cpc/hooks.d/base/series/base b/live-build/ubuntu-cpc/hooks.d/base/series/base
index 43262570..f04bdec7 100644
--- a/live-build/ubuntu-cpc/hooks.d/base/series/base
+++ b/live-build/ubuntu-cpc/hooks.d/base/series/base
@@ -5,3 +5,4 @@ depends disk-image
 depends qcow2
 depends vmdk
 depends vagrant
+depends wsl
diff --git a/live-build/ubuntu-cpc/hooks.d/base/series/wsl b/live-build/ubuntu-cpc/hooks.d/base/series/wsl
new file mode 100644
index 00000000..34915a31
--- /dev/null
+++ b/live-build/ubuntu-cpc/hooks.d/base/series/wsl
@@ -0,0 +1,2 @@
+depends root-dir
+base/wsl.binary
diff --git a/live-build/ubuntu-cpc/hooks.d/base/wsl.binary b/live-build/ubuntu-cpc/hooks.d/base/wsl.binary
new file mode 100755
index 00000000..4bf42800
--- /dev/null
+++ b/live-build/ubuntu-cpc/hooks.d/base/wsl.binary
@@ -0,0 +1,52 @@
+#!/bin/bash -eux
+# vi: ts=4 expandtab
+#
+# Generate the compressed root directory for WSL
+
+case ${SUBPROJECT:-} in
+    minimized)
+        echo "Skipping minimized $0 build as WSL systems are designed to be interactive"
+        exit 0
+        ;;
+    *)
+        ;;
+esac
+
+case $ARCH in
+    amd64|arm64)
+        ;;
+    *)
+        echo "WSL root tarballs are not generated for $ARCH."
+        exit 0;;
+esac
+
+if [ -n "${SUBARCH:-}" ]; then
+    echo "Skipping rootfs build for subarch flavor build"
+    exit 0
+fi
+
+. config/functions
+
+rootfs_dir=wslroot.dir
+
+# This is the directory created by create-root-dir.binary
+cp -a rootfs.dir $rootfs_dir
+
+setup_mountpoint $rootfs_dir
+
+env DEBIAN_FRONTEND=noninteractive chroot $rootfs_dir apt-get -y -qq install ubuntu-wsl
+
+create_manifest $rootfs_dir livecd.ubuntu-cpc.wsl.rootfs.manifest
+teardown_mountpoint $rootfs_dir
+
+# remove attributes not supported by WSL's tar
+if [ -d $rootfs_dir/var/log/journal ]; then
+    setfattr -x system.posix_acl_access $rootfs_dir/var/log/journal
+    setfattr -x system.posix_acl_default $rootfs_dir/var/log/journal
+fi
+
+cd $rootfs_dir
+tar --xattrs --sort=name -czf ../livecd.ubuntu-cpc.wsl.rootfs.tar.gz *
+cd ..
+
+rm -rf $rootfs_dir