[OE-core] [PATCH] busybox: Guard against interrupted compiles

[Richard Purdie]

If busybox is interrupted during do_compile, it can corrupt .config with
the suid version, or worse. Typically this leads to files disappearing,
particularly /etc/init.d/* which leads to an empty busybox-hwclock.
That then results in errors at do_rootfs time due to the missing package.

The fix is to use any 'orig' present to restore stat at the start of
compile.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 meta/recipes-core/busybox/busybox.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meta/recipes-core/busybox/busybox.inc b/meta/recipes-core/busybox/busybox.inc
index 1f4a48c..f247e8d 100644
--- a/meta/recipes-core/busybox/busybox.inc
+++ b/meta/recipes-core/busybox/busybox.inc
@@ -141,6 +141,10 @@ do_compile() {
 	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
 	if [ "${BUSYBOX_SPLIT_SUID}" = "1" -a x`grep "CONFIG_FEATURE_INDIVIDUAL=y" .config` = x ]; then
 	# split the .config into two parts, and make two busybox binaries
+		if [ -e .config.org ]; then
+			# Need to guard again an interrupted do_compile - restore any backup
+			cp .config.orig .config
+		fi
 		cp .config .config.orig
 		oe_runmake busybox.cfg.suid
 		oe_runmake busybox.cfg.nosuid
-- 
2.7.4