[PATCH openbmc 16/32] update: Add option to copy files to runtime cow directory

[OpenBMC Patches]

From: "Milton D. Miller II" <miltonm at us.ibm.com>

Add an option to copy files to the runtime copy-on-write upper
directory from the saved directory to allow init to request the
files for use without knowing the saved files directory.

This will be used to initialize the cow directory from the
persistent rwfs file system when choosing to run in RAM.

Signed-off-by: Milton Miller <miltonm at us.ibm.com>
---
 .../recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
index 6f26550..6b0d7a0 100755
--- a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
+++ b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-update.sh
@@ -63,6 +63,7 @@ mounted=
 doclean=
 dosave=y
 dorestore=y
+toram=
 
 whitelist=/run/initramfs/whitelist
 image=/run/initramfs/image-
@@ -88,6 +89,9 @@ do
 	--restore-files)
 		dorestore=y
 		shift ;;
+	--copy-files)
+		toram=y
+		shift ;;
 	*)
 		echo 2>&1 "Unknown option $1"
 		exit 1 ;;
@@ -138,6 +142,12 @@ do
 	flashcp -v $f /dev/$m
 done
 
+if test "x$toram" = xy
+then
+	mkdir -p $upper
+	cp -rp $save/. $upper/
+fi
+
 if test -d $save -a "x$dorestore" = xy
 then
 	odir=$rwdir
-- 
2.7.1