Set pipefail before running get_init_cpio

This addresses FS#20638, where gen_init_cpio fails, but the pipeline
still reports no error because gzip exits successfully. Setting pipefail
insures that if anything goes wrong with gen_init_cpio, the operation is
deemed a failure and the user isn't unknowingly left with a faulty
initcpio.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/mkinitcpio b/mkinitcpio
index c2565f5..2397776 100755
--- a/mkinitcpio
+++ b/mkinitcpio
@@ -277,6 +277,7 @@ fi
 status=0
 if [ -n "${GENIMG}" ]; then
     echo -n ":: Generating image '${GENIMG}'..."
+    shopt -s -o pipefail
     if ! /sbin/gen_init_cpio ${FILELIST} | ${COMPRESSION} -9 > "${GENIMG}"; then
         echo "FAILED"
         status=1