[PATCH 1/2] rootfs.bbclass: clean blkid cache files from rootfs

[venkata.pyla@toshiba-tsip.com]

From: venkata pyla <venkata.pyla@toshiba-tsip.com>

Sometimes `blkid` generates cached files `/run/blkid/blkdid.tab*`, these
cache files are not reproducible and not necessary in the final image,
so remove them to achieve reproducible builds.

Signed-off-by: venkata pyla <venkata.pyla@toshiba-tsip.com>
---
 meta/classes/rootfs.bbclass | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/meta/classes/rootfs.bbclass b/meta/classes/rootfs.bbclass
index 22449d71..5d493ea2 100644
--- a/meta/classes/rootfs.bbclass
+++ b/meta/classes/rootfs.bbclass
@@ -293,6 +293,12 @@ rootfs_export_dpkg_status() {
        '${ROOTFS_DPKGSTATUS_DEPLOY_DIR}'/'${ROOTFS_PACKAGE_SUFFIX}'.dpkg_status
 }
 
+ROOTFS_POSTPROCESS_COMMAND += "rootfs_postprocess_clean_blkid_cache"
+rootfs_postprocess_clean_blkid_cache() {
+    # blkid generates cache file which are not reproducible
+    sudo rm -rf "${ROOTFSDIR}/run/blkid/blkid.tab"*
+}
+
 do_rootfs_postprocess[vardeps] = "${ROOTFS_POSTPROCESS_COMMAND}"
 do_rootfs_postprocess[network] = "${TASK_USE_SUDO}"
 python do_rootfs_postprocess() {
-- 
2.20.1