Forwards compatibility for immutable-rootfs feat

This commit makes the immutable-rootfs module forwards compatible with
the other changes in mount, elemental-sysroot and elemental-setup.

It uses the new elemental.image and elemental.oemlabel cmdline paramters
if found, otherwise falls back to the old parameters and also sets the
/run/elemental/active|passive|recovery_mode files.

Signed-off-by: Fredrik Lönnegren <fredrik.lonnegren@suse.com>

.github/workflows/pr.yaml

@@ -33,7 +33,7 @@ jobs:
     strategy:
       matrix:
         arch: ${{fromJson(needs.detect.outputs.arch)}}
-        flavor: ['green']
+        flavor: ['green', 'tumbleweed']
     uses: ./.github/workflows/build_and_test.yaml
     with:
       arch: ${{ matrix.arch }}

examples/tumbleweed/Dockerfile

@@ -78,7 +78,7 @@ RUN cd /usr/lib/dracut && \
     rm /*.patch
 
 # Generate initrd with required elemental services
-RUN elemental init -f elemental-rootfs,elemental-sysroot,elemental-setup,grub-config,grub-default-bootargs,dracut-config,cloud-config-defaults,cloud-config-essentials && \
+RUN elemental init -f && \
     kernel=$(ls /boot/Image-* 2>/dev/null | head -n1) && \
     if [ -e "$kernel" ]; then ln -sf "${kernel#/boot/}" /boot/vmlinuz; fi && \
     rm -rf /var/log/update* && \

pkg/features/embedded/cloud-config-essentials/system/oem/00_rootfs.yaml

@@ -12,6 +12,12 @@ stages:
       datasource:
         providers: ["aws", "gcp", "openstack", "cdrom"]
         path: "/oem"
+  rootfs:
+    - if: '[ ! -f "/run/cos/recovery_mode" ]'
+      name: "Layout configuration"
+      environment_file: /run/cos/cos-layout.env
+      environment:
+        OVERLAY: "tmpfs:25%"
   initramfs:
     - if: '[ ! -f "/run/elemental/recovery_mode" ]'
       name: "Persist /etc/machine-id"

pkg/features/embedded/elemental-setup/usr/lib/systemd/system/elemental-setup-initramfs.service

@@ -4,10 +4,12 @@ DefaultDependencies=no
 After=initrd-fs.target
 Requires=initrd-fs.target
 Before=initrd.target
+Wants=oem.mount
+After=oem.mount
 
 [Service]
 RootDirectory=/sysroot
-BindPaths=/proc /sys /dev /run /tmp
+BindPaths=/proc /sys /dev /run /tmp /oem
 Type=oneshot
 RemainAfterExit=yes
 ExecStart=/usr/bin/elemental run-stage initramfs

pkg/features/embedded/grub-default-bootargs/etc/cos/bootargs.cfg

@@ -1,8 +1,8 @@
 # TODO we could sanity check $partlabel is set here so we can error out before even attempting to boot
 set kernel=/boot/vmlinuz
 if [ "${mode}" == "recovery" ]; then
-  set kernelcmd="console=tty1 console=ttyS0 root=LABEL=$recovery_label elemental.image=$mode elemental.oemlabel=COS_OEM security=selinux selinux=0 rd.neednet=1"
+  set kernelcmd="console=tty1 console=ttyS0 root=LABEL=$recovery_label elemental.image=$mode elemental.oemlabel=COS_OEM rd.cos.mount=LABEL=$oem_label:/oem security=selinux selinux=0 rd.neednet=1"
 else
-  set kernelcmd="console=tty1 console=ttyS0 root=LABEL=$state_label elemental.image=$mode elemental.oemlabel=COS_OEM panic=5 security=selinux selinux=0 rd.neednet=1 fsck.mode=force fsck.repair=yes"
+  set kernelcmd="console=tty1 console=ttyS0 root=LABEL=$state_label elemental.image=$mode elemental.oemlabel=COS_OEM panic=5 security=selinux selinux=0 rd.neednet=1 rd.cos.mount=LABEL=$oem_label:/oem fsck.mode=force fsck.repair=yes"
 fi
 set initramfs=/boot/initrd

pkg/features/embedded/immutable-rootfs/usr/lib/dracut/modules.d/30elemental-immutable-rootfs/elemental-generator.sh

@@ -4,16 +4,22 @@ type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
 
 cos_unit="elemental-immutable-rootfs.service"
 cos_layout="/run/cos/cos-layout.env"
-root_part_mnt="/run/initramfs/cos-state" # TODO change to something under /run/cos
+root_part_mnt="/run/initramfs/elemental-state" # TODO change to something under /run/cos
 
 # Omit any immutable roofs module logic if disabled
 if getargbool 0 rd.cos.disable; then
     exit 0
 fi
 
+if getargbool 0 elemental.disable; then
+    exit 0
+fi
+
 # Omit any immutable rootfs module logic if no image path provided
 cos_img=$(getarg cos-img/filename=)
-[ -z "${cos_img}" ] && exit 0
+elemental_img=$(getarg elemental.image=)
+[ -z "${cos_img}" && -z "${elemental_img}" ] && exit 0
+[ -z "${cos_img}" ] && cos_img="/cOS/${elemental_img}.img"
 
 [ -z "${root}" ] && root=$(getarg root=)
 
@@ -23,7 +29,10 @@ if getargbool 0 rd.cos.debugrw; then
 fi
 
 oem_timeout=$(getargnum 120 1 1800 rd.cos.oemtimeout=)
+
 oem_label=$(getarg rd.cos.oemlabel=)
+[ -z "${oem_label}" ] && oem_label=$(getarg elemental.oemlabel=)
+
 cos_overlay=$(getarg rd.cos.overlay=)
 [ -z "${cos_overlay}" ] && cos_overlay="tmpfs:20%"
 

pkg/features/embedded/immutable-rootfs/usr/lib/dracut/modules.d/30elemental-immutable-rootfs/parse-elemental-cmdline.sh

@@ -7,20 +7,30 @@
 # rd.cos.overlay=UUID=<vol_uuid>
 # rd.cos.oemtimeout=<seconds>
 # rd.cos.oemlabel=<vol_label>
+# elemental.oemlabel=<vol_label>
 # rd.cos.debugrw
 # rd.cos.disable
+# elemental.disable
 # cos-img/filename=/cOS/active.img
+# elemental.image=active
 
 type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
 
 if getargbool 0 rd.cos.disable; then
     return 0
 fi
 
+if getargbool 0 elemental.disable; then
+    return 0
+fi
+
 cos_img=$(getarg cos-img/filename=)
-[ -z "${cos_img}" ] && return 0
+elemental_img=$(getarg elemental.image=)
+[ -z "${cos_img}" && -z "${elemental_img}" ] && return 0
 [ -z "${root}" ] && root=$(getarg root=)
 
+[ -n "${elemental_img}" ] && cos_img="/cOS/${elemental_img}.img"
+
 cos_root_perm="ro"
 if getargbool 0 rd.cos.debugrw; then
     cos_root_perm="rw"
@@ -42,6 +52,7 @@ esac
 [ "${rootok}" != "1" ] && return 0
 
 info "root device set to root=${root}"
+info "image set to=${cos_img}"
 
 wait_for_dev -n "${root#block:}"
 
@@ -62,4 +73,14 @@ case "${cos_img}" in
         echo -n 1 > /run/cos/passive_mode ;;
 esac
 
+mkdir -p /run/elemental
+case "${cos_img}" in
+    *recovery*)
+        echo -n 1 > /run/elemental/recovery_mode ;;
+    *active*)
+        echo -n 1 > /run/elemental/active_mode ;;
+    *passive*)
+        echo -n 1 > /run/elemental/passive_mode ;;
+esac
+
 return 0