From 77780f799e66cd261746a281dbbef1ee0c6997cd Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Sat, 2 Sep 2017 17:05:35 +0900
Subject: [PATCH] kbuild: buildtar: do not print successful message if tar
 returns error

The previous commit spotted that "Tarball successfully created ..."
is displayed even if the "tar" command returns error code because
it is followed by "| ${compress}".

Let the build fail instead of printing the successful message since
if the "tar" command fails, the output may not be what users expect.

Avoid the use of the pipe.  While we are here, refactor the script
removing the use of sub-shell, ${compress}, ${file_ext}.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
 scripts/package/buildtar | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 60dd836a0214..51f947118256 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -24,20 +24,19 @@ tarball="${objtree}/linux-${KERNELRELEASE}-${ARCH}.tar"
 #
 case "${1}" in
 	tar-pkg)
-		compress="cat"
-		file_ext=""
+		opts=
 		;;
 	targz-pkg)
-		compress="gzip"
-		file_ext=".gz"
+		opts=--gzip
+		tarball=${tarball}.gz
 		;;
 	tarbz2-pkg)
-		compress="bzip2"
-		file_ext=".bz2"
+		opts=--bzip2
+		tarball=${tarball}.bz2
 		;;
 	tarxz-pkg)
-		compress="xz"
-		file_ext=".xz"
+		opts=--xz
+		tarball=${tarball}.xz
 		;;
 	*)
 		echo "Unknown tarball target \"${1}\" requested, please add it to ${0}." >&2
@@ -125,14 +124,12 @@ esac
 #
 # Create the tarball
 #
-(
-	opts=
-	if tar --owner=root --group=root --help >/dev/null 2>&1; then
-		opts="--owner=root --group=root"
-	fi
-	tar cf - -C "$tmpdir" $dirs $opts | ${compress} > "${tarball}${file_ext}"
-)
+if tar --owner=root --group=root --help >/dev/null 2>&1; then
+	opts="$opts --owner=root --group=root"
+fi
+
+tar cf $tarball -C $tmpdir $opts $dirs
 
-echo "Tarball successfully created in ${tarball}${file_ext}"
+echo "Tarball successfully created in $tarball"
 
 exit 0
-- 
2.20.1