From 882052eca0b454629c412ce7efdf4be6ecc08693 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Sun, 8 Nov 2015 00:29:55 +0100
Subject: [PATCH] dracut: split 'full' dracut module into 'full-dmroot' and
 'full-modules'

When PV Grub will be used, VM initramfs should not contain /lib/modules
mounting code, as the VM root.img will already contains kernel modules.
Make it possible by splitting the module.

QubesOS/qubes-issues#1354
---
 dracut/Makefile                                 | 3 ++-
 dracut/{full => full-dmroot}/Makefile           | 2 +-
 dracut/{full => full-dmroot}/module-setup.sh    | 3 +--
 dracut/{full => full-dmroot}/qubes_cow_setup.sh | 2 +-
 dracut/full-modules/Makefile                    | 4 ++++
 dracut/full-modules/module-setup.sh             | 9 +++++++++
 dracut/{full => full-modules}/mount_modules.sh  | 2 +-
 rpm_spec/qubes-kernel-vm-support.spec           | 1 +
 8 files changed, 20 insertions(+), 6 deletions(-)
 rename dracut/{full => full-dmroot}/Makefile (65%)
 rename dracut/{full => full-dmroot}/module-setup.sh (65%)
 rename dracut/{full => full-dmroot}/qubes_cow_setup.sh (100%)
 create mode 100644 dracut/full-modules/Makefile
 create mode 100644 dracut/full-modules/module-setup.sh
 rename dracut/{full => full-modules}/mount_modules.sh (100%)

diff --git a/dracut/Makefile b/dracut/Makefile
index f3b6897..b46c7a2 100644
--- a/dracut/Makefile
+++ b/dracut/Makefile
@@ -1,3 +1,4 @@
 install:
 	$(MAKE) -C simple
-	$(MAKE) -C full
+	$(MAKE) -C full-dmroot
+	$(MAKE) -C full-modules
diff --git a/dracut/full/Makefile b/dracut/full-dmroot/Makefile
similarity index 65%
rename from dracut/full/Makefile
rename to dracut/full-dmroot/Makefile
index 272669f..4dc2e80 100644
--- a/dracut/full/Makefile
+++ b/dracut/full-dmroot/Makefile
@@ -1,4 +1,4 @@
 install:
 	install -d $(DESTDIR)/usr/lib/dracut/modules.d/90qubes-vm
-	install module-setup.sh mount_modules.sh qubes_cow_setup.sh \
+	install module-setup.sh qubes_cow_setup.sh \
 		$(DESTDIR)/usr/lib/dracut/modules.d/90qubes-vm/
diff --git a/dracut/full/module-setup.sh b/dracut/full-dmroot/module-setup.sh
similarity index 65%
rename from dracut/full/module-setup.sh
rename to dracut/full-dmroot/module-setup.sh
index 652fe8a..ecb316e 100644
--- a/dracut/full/module-setup.sh
+++ b/dracut/full-dmroot/module-setup.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 check() {
-    if xenstore-read qubes-vm-type &>/dev/null; then
+    if xenstore-read qubes-vm-type &>/dev/null || qubesdb-read qubes-vm-type &>/dev/null; then
         return 0
     else
         return 255
@@ -10,7 +10,6 @@ check() {
 
 install() {
     inst_hook pre-udev 90 $moddir/qubes_cow_setup.sh
-    inst_hook pre-pivot 50 $moddir/mount_modules.sh
     inst_multiple \
         sfdisk \
         mkswap
diff --git a/dracut/full/qubes_cow_setup.sh b/dracut/full-dmroot/qubes_cow_setup.sh
similarity index 100%
rename from dracut/full/qubes_cow_setup.sh
rename to dracut/full-dmroot/qubes_cow_setup.sh
index 2e7e8d5..9d859f1 100644
--- a/dracut/full/qubes_cow_setup.sh
+++ b/dracut/full-dmroot/qubes_cow_setup.sh
@@ -1,8 +1,8 @@
+#!/bin/sh
 #
 # This file should be places in pre-mount directory in dracut's initramfs
 #
 
-#!/bin/sh
 echo "Qubes initramfs script here:"
 
 if [ -e /dev/mapper/dmroot ] ; then 
diff --git a/dracut/full-modules/Makefile b/dracut/full-modules/Makefile
new file mode 100644
index 0000000..fd38368
--- /dev/null
+++ b/dracut/full-modules/Makefile
@@ -0,0 +1,4 @@
+install:
+	install -d $(DESTDIR)/usr/lib/dracut/modules.d/90qubes-vm-modules
+	install module-setup.sh mount_modules.sh \
+		$(DESTDIR)/usr/lib/dracut/modules.d/90qubes-vm-modules/
diff --git a/dracut/full-modules/module-setup.sh b/dracut/full-modules/module-setup.sh
new file mode 100644
index 0000000..614ecd2
--- /dev/null
+++ b/dracut/full-modules/module-setup.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+check() {
+    return 255
+}
+
+install() {
+    inst_hook pre-pivot 50 $moddir/mount_modules.sh
+}
diff --git a/dracut/full/mount_modules.sh b/dracut/full-modules/mount_modules.sh
similarity index 100%
rename from dracut/full/mount_modules.sh
rename to dracut/full-modules/mount_modules.sh
index 3bc795e..129de59 100644
--- a/dracut/full/mount_modules.sh
+++ b/dracut/full-modules/mount_modules.sh
@@ -1,8 +1,8 @@
+#!/bin/sh
 #
 # This file should be places in pre-pivot directory in dracut's initramfs
 #
 
-#!/bin/sh
 
 if ! [ -d $NEWROOT/lib/modules/`uname -r` ]; then
     echo "Waiting for /dev/xvdd device..."
diff --git a/rpm_spec/qubes-kernel-vm-support.spec b/rpm_spec/qubes-kernel-vm-support.spec
index a1e468c..925bbe9 100644
--- a/rpm_spec/qubes-kernel-vm-support.spec
+++ b/rpm_spec/qubes-kernel-vm-support.spec
@@ -61,6 +61,7 @@ make install-kernel-support DESTDIR=%{buildroot}
 
 %files
 /usr/lib/dracut/modules.d/90qubes-vm
+/usr/lib/dracut/modules.d/90qubes-vm-modules
 /usr/lib/dracut/modules.d/90qubes-vm-simple
 /usr/src/u2mfn-%{version}/
 /usr/sbin/qubes-prepare-vm-kernel