[poky] [PATCH 3/3] staging.bbclass: use hardlink when staging files to sysroot-destdir

[Dongxiao Xu]

Use hardlink to replace copy when staging files to sysroot-destdir.
If fail, it will fall back to copy function.

Signed-off-by: Dongxiao Xu <dongxiao.xu at intel.com>
---
 meta/classes/staging.bbclass |   27 ++++++++++++++++++++++++++-
 1 files changed, 26 insertions(+), 1 deletions(-)

diff --git a/meta/classes/staging.bbclass b/meta/classes/staging.bbclass
index e82db83..159562d 100644
--- a/meta/classes/staging.bbclass
+++ b/meta/classes/staging.bbclass
@@ -3,6 +3,31 @@ packagedstaging_fastpath () {
 	:
 }
 
+hardlink() {
+	local src="$1"
+	local dest="$2"
+	local name names srcname destname
+
+	if [ ! -d "$dest" ]; then
+		mkdir -p "$dest"
+	fi
+
+	names=$(ls $src)
+	for name in $names
+	do
+		srcname=$src"/"$name
+		destname=$dest"/"$name
+		if [ -d "$srcname" ]; then
+			hardlink $srcname $destname
+		else
+			ln -f $srcname $destname || true
+			if [ ! -e $destname ]; then
+				cp -fpPR $srcname $destname
+			fi
+		fi
+	done
+}
+
 sysroot_stage_dir() {
 	src="$1"
 	dest="$2"
@@ -17,7 +42,7 @@ sysroot_stage_dir() {
 	# However we always want to stage a $src itself, even if it's empty
 	mkdir -p "$dest"
 	if [ -d "$src" ]; then
-		cp -fpPR "$src"/* "$dest"
+		hardlink "$src" "$dest"
 	fi
 }
 
-- 
1.6.3.3