Tuned initrd image and pseudo environment to fix bugs with extended

security attributes.

Bug-AGL: SPEC-259

Change-Id: I44499ce3f5f1924aecf63689a93d1f20e779225e
Signed-off-by: Anton Gerasimov <anton@advancedtelematic.com>

10 files changed, 157 insertions, 375 deletions

diff --git a/meta-sota/classes/image_types_ostree.bbclass b/meta-sota/classes/image_types_ostree.bbclass
index a180721..4353af7 100644
--- a/meta-sota/classes/image_types_ostree.bbclass
+++ b/meta-sota/classes/image_types_ostree.bbclass
@@ -4,7 +4,7 @@ inherit image
 
 IMAGE_DEPENDS_ostree = "ostree-native:do_populate_sysroot \ 
 			virtual/kernel:do_deploy \
-			${OSTREE_INITRAMFS_IMAGE}:do_image_cpio"
+			${OSTREE_INITRAMFS_IMAGE}:do_image_ext4"
 
 export OSTREE_REPO
 export OSTREE_BRANCHNAME
@@ -93,7 +93,7 @@ IMAGE_CMD_ostree () {
 	checksum=`sha256sum ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE} | cut -f 1 -d " "`
 
 	cp ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE} boot/vmlinuz-${checksum}
-	cp ${DEPLOY_DIR_IMAGE}/${OSTREE_INITRAMFS_IMAGE}-${MACHINE}.cpio.gz boot/initramfs-${checksum}
+	cp ${DEPLOY_DIR_IMAGE}/${OSTREE_INITRAMFS_IMAGE}-${MACHINE}.ext4.gz boot/initramfs-${checksum}
 
 	cd ${WORKDIR}
 
diff --git a/meta-sota/recipes-bsp/u-boot/u-boot-ota/0001-Set-up-environment-for-OSTree-integration.patch b/meta-sota/recipes-bsp/u-boot/u-boot-ota/0001-Set-up-environment-for-OSTree-integration.patch
index 186a2a2..851a0ab 100644
--- a/meta-sota/recipes-bsp/u-boot/u-boot-ota/0001-Set-up-environment-for-OSTree-integration.patch
+++ b/meta-sota/recipes-bsp/u-boot/u-boot-ota/0001-Set-up-environment-for-OSTree-integration.patch
@@ -23,7 +23,7 @@ index 78c296f..79df455 100644
 +
 +#undef CONFIG_BOOTCOMMAND
 +#define CONFIG_BOOTCOMMAND "run loadenv;" \
-+			   "setenv bootargs $bootargs\" console=ttyS0 root=/dev/hda\";" \
++			   "setenv bootargs $bootargs\" console=ttyS0 root=/dev/ram0 rw rootfstype=ext4 rootwait rootdelay=2 ostree_root=/dev/hda ramdisk_size=8192 \";" \
 +			   "ext2load ide 0 $loadaddr \"/boot\"$kernel_image;" \
 +			   "ext2load ide 0 $ramdiskaddr \"/boot\"$ramdisk_image;" \
 +			   "zboot $loadaddr - $ramdiskaddr $filesize"
diff --git a/meta-sota/recipes-core/images/initramfs-ostree-image.bb b/meta-sota/recipes-core/images/initramfs-ostree-image.bb
index 71aa631..9e47086 100644
--- a/meta-sota/recipes-core/images/initramfs-ostree-image.bb
+++ b/meta-sota/recipes-core/images/initramfs-ostree-image.bb
@@ -1,7 +1,7 @@
 # Netboot initramfs image.
 DESCRIPTION = "OSTree initramfs image"
 
-PACKAGE_INSTALL = "ostree ostree-initramfs systemd-initramfs busybox base-passwd ${ROOTFS_BOOTSTRAP_INSTALL}"
+PACKAGE_INSTALL = "ostree-switchroot ostree-initrd busybox base-passwd ${ROOTFS_BOOTSTRAP_INSTALL}"
 
 SYSTEMD_DEFAULT_TARGET = "initrd.target"
 
diff --git a/meta-sota/recipes-devtools/pseudo/files/0001-Add-check-for-existence-of-old-file-to-renameat.patch b/meta-sota/recipes-devtools/pseudo/files/0001-Add-check-for-existence-of-old-file-to-renameat.patch
new file mode 100644
index 0000000..3da2ad7
--- /dev/null
+++ b/meta-sota/recipes-devtools/pseudo/files/0001-Add-check-for-existence-of-old-file-to-renameat.patch
@@ -0,0 +1,40 @@
+From 41bb6c818a7ec9eeb33b60302c55c9c5ee393c5f Mon Sep 17 00:00:00 2001
+From: Anton Gerasimov <anton@advancedtelematic.com>
+Date: Fri, 30 Sep 2016 17:12:19 +0200
+Subject: [PATCH 1/1] Add check for existence of old file to renameat
+
+---
+ ports/unix/guts/renameat.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/ports/unix/guts/renameat.c b/ports/unix/guts/renameat.c
+index ade0509..d5e36fa 100644
+--- a/ports/unix/guts/renameat.c
++++ b/ports/unix/guts/renameat.c
+@@ -11,6 +11,7 @@
+ 	int oldrc, newrc;
+ 	int save_errno;
+ 	int old_db_entry = 0;
++	int may_unlinked = 0;
+ 
+ 	pseudo_debug(PDBGF_FILE, "renameat: %d,%s->%d,%s\n",
+ 		olddirfd, oldpath ? oldpath : "<nil>",
+@@ -44,10 +45,14 @@
+ 	/* as with unlink, we have to mark that the file may get deleted */
+ 	msg = pseudo_client_op(OP_MAY_UNLINK, 0, -1, newdirfd, newpath, newrc ? NULL : &newbuf);
+ 	if (msg && msg->result == RESULT_SUCCEED)
++		may_unlinked = 1;
++	msg = pseudo_client_op(OP_STAT, 0, -1, olddirfd, oldpath, oldrc ? NULL : &oldbuf);
++	if (msg && msg->result == RESULT_SUCCEED)
+ 		old_db_entry = 1;
++
+ 	rc = real_renameat(olddirfd, oldpath, newdirfd, newpath);
+ 	save_errno = errno;
+-	if (old_db_entry) {
++	if (may_unlinked) {
+ 		if (rc == -1) {
+ 			/* since we failed, that wasn't really unlinked -- put
+ 			 * it back.
+-- 
+2.9.3
+
diff --git a/meta-sota/recipes-devtools/pseudo/pseudo_1.7.5.bbappend b/meta-sota/recipes-devtools/pseudo/pseudo_1.7.5.bbappend
new file mode 100644
index 0000000..73b43df
--- /dev/null
+++ b/meta-sota/recipes-devtools/pseudo/pseudo_1.7.5.bbappend
@@ -0,0 +1,3 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+
+SRC_URI += "file://0001-Add-check-for-existence-of-old-file-to-renameat.patch"
diff --git a/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs.bb b/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs.bb
deleted file mode 100644
index 5b3818c..0000000
--- a/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs.bb
+++ /dev/null
@@ -1,32 +0,0 @@
-# Small hook to call ostree-prepare-root on initrd-switch-root
-
-LICENSE = "GPLv2+"
-LIC_FILES_CHKSUM = "file://COPYING.GPL;md5=751419260aa954499f7abaabaa882bbe"
-
-S = "${WORKDIR}"
-
-SRC_URI = "file://COPYING.GPL"
-
-DEPENDS += " ostree"
-
-FILES_${PN} += "${systemd_unitdir} \
-		${systemd_unitdir}/system \
-		${systemd_unitdir}/system/initrd-switch-root.target.wants \
-		${systemd_unitdir}/system/initrd-switch-root.target.wants/ostree-prepare-root.service \
-		${sysconfdir}/initrd-release \
-		"
-
-export OSTREE_INITRAMFS_IMAGE
-
-do_install() {
-	if ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then
-		install -d ${D}${sysconfdir}
-		echo "NAME=${OSTREE_INITRAMFS_IMAGE}" > ${D}/${sysconfdir}/initrd-release
-		install -d ${D}${systemd_unitdir}
-		install -d ${D}${systemd_unitdir}/system
-
-		install -d ${D}${systemd_unitdir}/system/initrd-switch-root.target.wants
-		ln -s ${systemd_unitdir}/system/ostree-prepare-root.service  \
-			"${D}${systemd_unitdir}/system/initrd-switch-root.target.wants/ostree-prepare-root.service"
-	fi
-}
diff --git a/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs/COPYING.GPL b/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs/COPYING.GPL
deleted file mode 100644
index d511905..0000000
--- a/meta-sota/recipes-sota/ostree-initramfs/ostree-initramfs/COPYING.GPL
+++ /dev/null
@@ -1,339 +0,0 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
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- Everyone is permitted to copy and distribute verbatim copies
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diff --git a/meta-sota/recipes-sota/ostree-initrd/files/init.sh b/meta-sota/recipes-sota/ostree-initrd/files/init.sh
new file mode 100644
index 0000000..5aa99d6
--- /dev/null
+++ b/meta-sota/recipes-sota/ostree-initrd/files/init.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+# global variables
+
+SMACK=n
+DEBUG=n
+
+# -------------------------------------------
+
+log_info() { echo "$0[$$]: $@" >&2; }
+log_error() { echo "$0[$$]: ERROR $@" >&2; }
+
+do_mount_fs() {
+	log_info "mounting FS: $@"
+	[[ -e /proc/filesystems ]] && { grep -q "$1" /proc/filesystems || { log_error "Unknown filesystem"; return 1; } }
+	[[ -d "$2" ]] || mkdir -p "$2"
+	[[ -e /proc/mounts ]] && { grep -q -e "^$1 $2 $1" /proc/mounts && { log_info "$2 ($1) already mounted"; return 0; } }
+	mount -t "$1" "$1" "$2"
+}
+
+bail_out() {
+	log_error "$@"
+	log_info "Rebooting..."
+	#exec reboot -f
+	exec sh
+}
+
+get_ostree_sysroot() {
+	for opt in `cat /proc/cmdline`; do
+		arg=`echo $opt | cut -d'=' -f1`
+		if [ $arg == "ostree_root" ]; then
+			echo $opt | cut -d'=' -f2
+			return
+		fi
+	done
+}
+
+export PATH=/sbin:/usr/sbin:/bin:/usr/bin
+
+log_info "starting initrd script"
+
+do_mount_fs proc /proc
+do_mount_fs sysfs /sys
+do_mount_fs devtmpfs /dev
+do_mount_fs devpts /dev/pts
+do_mount_fs tmpfs /dev/shm
+do_mount_fs tmpfs /tmp
+do_mount_fs tmpfs /run
+
+# check if smack is active (and if so, mount smackfs)
+grep -q smackfs /proc/filesystems && {
+	SMACK=y
+
+	do_mount_fs smackfs /sys/fs/smackfs
+
+	# adjust current label and network label
+	echo System >/proc/self/attr/current
+	echo System >/sys/fs/smackfs/ambient
+}
+
+mkdir -p /sysroot
+ostree_sysroot=$(get_ostree_sysroot)
+
+mount $ostree_sysroot /sysroot || bail_out "Unable to mount $ostree_sysroot as physical sysroot"
+ostree-prepare-root /sysroot
+
+# move mounted devices to new root
+cd /sysroot
+for x in dev proc; do
+	log_info "Moving /$x to new rootfs"
+	mount -o move /$x $x
+done
+
+# switch to new rootfs
+log_info "Switching to new rootfs"
+mkdir -p run/initramfs
+
+pivot_root . run/initramfs || bail_out "pivot_root failed."
+
+log_info "Launching target init"
+
+exec chroot . sh -c 'umount /run/initramfs; exec /sbin/init' \
+	  <dev/console >dev/console 2>&1
+
diff --git a/meta-sota/recipes-sota/ostree-initrd/ostree-initrd.bb b/meta-sota/recipes-sota/ostree-initrd/ostree-initrd.bb
new file mode 100644
index 0000000..5c85bee
--- /dev/null
+++ b/meta-sota/recipes-sota/ostree-initrd/ostree-initrd.bb
@@ -0,0 +1,19 @@
+SUMMARY = "Extremely basic live image init script"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+SRC_URI = "file://init.sh"
+
+S = "${WORKDIR}"
+
+do_install() {
+	install -dm 0755 ${D}/etc
+	touch ${D}/etc/initrd-release
+	install -dm 0755 ${D}/dev
+	install -dm 0755 ${D}/sbin
+        install -m 0755 ${WORKDIR}/init.sh ${D}/sbin/init
+}
+
+inherit allarch
+
+FILES_${PN} += " /dev /etc/initrd-release /sbin/init "
+
diff --git a/meta-sota/recipes-sota/ostree/ostree_git.bb b/meta-sota/recipes-sota/ostree/ostree_git.bb
index 6adac5f..b5675ab 100644
--- a/meta-sota/recipes-sota/ostree/ostree_git.bb
+++ b/meta-sota/recipes-sota/ostree/ostree_git.bb
@@ -7,6 +7,7 @@ inherit autotools-brokensep pkgconfig systemd
 INHERIT_remove_class-native = "systemd"
 
 SRC_URI = "gitsm://github.com/ostreedev/ostree.git;branch=master"
+
 SRCREV="v2016.5"
 
 S = "${WORKDIR}/git"
@@ -65,3 +66,9 @@ FILES_${PN} += " \
     ${libdir}/girepository-1.0/OSTree-1.0.typelib \
 "
 
+PACKAGES =+ "${PN}-switchroot"
+
+FILES_${PN}-switchroot = "${sbindir}/ostree-prepare-root"
+RDEPENDS_${PN}-switchroot = ""
+DEPENDS_remove_class-native = "systemd-native"
+