[OE-core] [PATCH 1/1] systemd: ignore qemu output, and check its return code

[rongqing.li at windriver.com]

From: "Roy.Li" <rongqing.li at windriver.com>

qemu prints errors sometime, but it works well, the error information
can be captured by rpm, and lead to rpm failure. like:

	$export D=/tmp/rootfs;.../usr/bin/qemu-i386 -L $D \
		-E LD_LIBRARY_PATH=$D/usr/lib:$D/lib $D/bin/udevadm hwdb --update --root $D
	qemu: Unsupported syscall: 240
	$echo $?
	$ 0

Signed-off-by: Roy.Li <rongqing.li at windriver.com>
---
 meta/recipes-core/systemd/systemd_204.bb |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-core/systemd/systemd_204.bb b/meta/recipes-core/systemd/systemd_204.bb
index b8b1290..10bde33 100644
--- a/meta/recipes-core/systemd/systemd_204.bb
+++ b/meta/recipes-core/systemd/systemd_204.bb
@@ -277,7 +277,9 @@ ALTERNATIVE_PRIORITY[poweroff] ?= "300"
 pkg_postinst_udev-hwdb () {
 	if test -n "$D"; then
 		${@qemu_run_binary(d, '$D', '${base_bindir}/udevadm')} hwdb --update \
-			--root $D
+			--root $D 2>/dev/null
+
+		[ $? -ne 0 ] && exit 1
 	else
 		udevadm hwdb --update
 	fi
-- 
1.7.10.4