image_types.bbclass: refactor cpio images generation.

* Add common check for the presence of an /init
* symlink, being 'touch' would fail with it
* and 'touch -h' is not yet generally supported
* (depends on distro on build host).

(From OE-Core rev: ab282056148f3152f96b6990e09270ae5405da9d)

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 17 insertions, 4 deletions

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index 4908ed99bf..eef554d04c 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -115,16 +115,29 @@ IMAGE_CMD_tar = "cd ${IMAGE_ROOTFS} && tar -cvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME
 IMAGE_CMD_tar.gz = "cd ${IMAGE_ROOTFS} && tar -zcvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.gz ."
 IMAGE_CMD_tar.bz2 = "cd ${IMAGE_ROOTFS} && tar -jcvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.bz2 ."
 IMAGE_CMD_tar.xz = "cd ${IMAGE_ROOTFS} && tar --xz -cvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.xz ."
-IMAGE_CMD_cpio () {
+
+CPIO_TOUCH_INIT () {
+        if [ ! -L ${IMAGE_ROOTFS}/init ]
+        then
         touch ${IMAGE_ROOTFS}/init
+        fi
+}
+IMAGE_CMD_cpio () {
+        ${CPIO_TOUCH_INIT}
         cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio)
 }
 IMAGE_CMD_cpio.gz () {
-        touch ${IMAGE_ROOTFS}/init
+        ${CPIO_TOUCH_INIT}
         cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | gzip -c -9 >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.gz)
 }
-IMAGE_CMD_cpio.xz = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.xz) ${EXTRA_IMAGECMD}"
-IMAGE_CMD_cpio.lzma = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz --format=lzma -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.lzma) ${EXTRA_IMAGECMD}"
+IMAGE_CMD_cpio.xz () {
+        ${CPIO_TOUCH_INIT}
+        cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.xz) ${EXTRA_IMAGECMD}
+}
+IMAGE_CMD_cpio.lzma () {
+        ${CPIO_TOUCH_INIT}
+        cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | xz --format=lzma -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK} >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.lzma) ${EXTRA_IMAGECMD}
+}
 
 UBI_VOLNAME ?= "${MACHINE}-rootfs"