Bump buildroot to 2020.11-rc1 (#985)

* Update buildroot-patches for 2020.11-rc1 buildroot

* Update buildroot to 2020.11-rc1

Signed-off-by: Stefan Agner <stefan@agner.ch>

* Don't rely on sfdisk --list-free output

The --list-free (-F) argument does not allow machine readable mode. And
it seems that the output format changes over time (different spacing,
using size postfixes instead of raw blocks).

Use sfdisk json output and calculate free partition space ourselfs. This
works for 2.35 and 2.36 and is more robust since we rely on output which
is meant for scripts to parse.

* Migrate defconfigs for Buildroot 2020.11-rc1

In particular, rename BR2_TARGET_UBOOT_BOOT_SCRIPT(_SOURCE) to
BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT(_SOURCE).

* Rebase/remove systemd patches for systemd 246

* Drop apparmor/libapparmor from buildroot-external

* hassos-persists: use /run as directory for lockfiles

The U-Boot tools use /var/lock by default which is not created any more
by systemd by default (it is under tmpfiles legacy.conf, which we no
longer install).

* Disable systemd-update-done.service

The service is not suited for pure read-only systems. In particular the
service needs to be able to write a file in /etc and /var. Remove the
service. Note: This is a static service and cannot be removed using
systemd-preset.

* Disable apparmor.service for now

The service loads all default profiles. Some might actually cause
problems. E.g. the profile for ping seems not to match our setup for
/etc/resolv.conf:
[85503.634653] audit: type=1400 audit(1605286002.684:236): apparmor="DENIED" operation="open" profile="ping" name="/run/resolv.conf" pid=27585 comm="ping" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

buildroot/package/e2fsprogs/0001-create_inode-set-xattrs-to-the-root-directory-as-wel.patch

@@ -0,0 +1,46 @@
+From 1826d8965057bd84517156a4b75c81bdfdae9ebc Mon Sep 17 00:00:00 2001
+From: Antoine Tenart <antoine.tenart@bootlin.com>
+Date: Wed, 1 Jul 2020 10:06:03 +0200
+Subject: [PATCH] create_inode: set xattrs to the root directory as well
+
+populate_fs do copy the xattrs for all files and directories, but the
+root directory is skipped and as a result its extended attributes aren't
+set. This is an issue when using mkfs to build a full system image that
+can be used with SElinux in enforcing mode without making any runtime
+fix at first boot.
+
+This patch adds logic to set the root directory's extended attributes.
+
+[Uspstream status: sent to the mailing list and has a Reviewed-by tag,
+https://lore.kernel.org/linux-ext4/20200717100846.497546-1-antoine.tenart@bootlin.com/]
+
+Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
+---
+ misc/create_inode.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/misc/create_inode.c b/misc/create_inode.c
+index e8d1df6b55a5..fe66faf1b53d 100644
+--- a/misc/create_inode.c
++++ b/misc/create_inode.c
+@@ -1050,9 +1050,17 @@ errcode_t populate_fs2(ext2_filsys fs, ext2_ino_t parent_ino,
+ 	file_info.path_max_len = 255;
+ 	file_info.path = calloc(file_info.path_max_len, 1);
+ 
++	retval = set_inode_xattr(fs, root, source_dir);
++	if (retval) {
++		com_err(__func__, retval,
++			_("while copying xattrs on root directory"));
++		goto out;
++	}
++
+ 	retval = __populate_fs(fs, parent_ino, source_dir, root, &hdlinks,
+ 			       &file_info, fs_callbacks);
+ 
++out:
+ 	free(file_info.path);
+ 	free(hdlinks.hdl);
+ 	return retval;
+-- 
+2.26.2
+

buildroot/package/e2fsprogs/e2fsprogs.mk

@@ -17,6 +17,8 @@ E2FSPROGS_INSTALL_STAGING = YES
 E2FSPROGS_DEPENDENCIES = host-pkgconf util-linux
 HOST_E2FSPROGS_DEPENDENCIES = host-pkgconf host-util-linux
 
+E2FSPROGS_SELINUX_MODULES = fstools
+
 # e4defrag doesn't build on older systems like RHEL5.x, and we don't
 # need it on the host anyway.
 # Disable fuse2fs as well to avoid carrying over deps, and it's unused