From: Jens Rehsack <rehsack@gmail.com>
Date: Fri, 12 Feb 2016 09:17:32 +0000 (+0100)
Subject: initscripts: populate-volatiles.sh: add mount-bind feature
X-Git-Tag: lucaceresoli/bug-15201-perf-libtraceevent-missing~27017
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab42fcaf1427a29c31ac2e93965e20849b1b1234;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git

initscripts: populate-volatiles.sh: add mount-bind feature

Add ability to run "mount --bind" to populate-volatiles. Since several
programs use realpath to determine several full qualified file names,
there is no symlink to be resolved. So when speccing /run/lock - that's
the location - not /var/run/lock because of the program is smarter
than the operator/distributor.

See https://github.com/rehsack/meta-jens/blob/jethro/recipes-core/initscripts/initscripts/volatiles
for an example how to use the "b" feature.

Signed-off-by: Jens Rehsack <sno@netbsd.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

diff --git a/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh b/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh
index 904037eeaa5..ce4622a5e55 100755
--- a/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh
+++ b/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh
@@ -163,6 +163,16 @@ apply_cfgfile() {
 			continue
 		}
 
+		[ "${TTYPE}" = "b" ] && {
+			TSOURCE="$TLTARGET"
+			[ "${VERBOSE}" != "no" ] && echo "Creating mount-bind -${TNAME}- from -${TSOURCE}-."
+			mount --bind "${TSOURCE}" "${TNAME}"
+			EXEC="
+	mount --bind \"${TSOURCE}\" \"${TNAME}\""
+			test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build
+			continue
+		}
+
 		[ -L "${TNAME}" ] && {
 			[ "${VERBOSE}" != "no" ] && echo "Found link."
 			NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'`