[oe-commits] [openembedded-core] 01/04: initscripts: Populate volatile from existing file

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit 5bb02e492f5e5e2583ed8e64c0f0170efa171bf8
Author: David Vincent <freesilicon at gmail.com>
AuthorDate: Fri Jun 2 17:16:03 2017 +0200

    initscripts: Populate volatile from existing file
    
    In some cases, it may be useful to populate a volatile file from an
    existing one, e.g. a file in a read-only rootfs that may be edited in a
    read-write destination.
    
    To provide this behavior, creation of volatile files has been updated to
    copy a file which has been given in the <linksource> field. If set to
    none, the current behavior is preserved.
    
    Signed-off-by: David Vincent <freesilicon at gmail.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 .../initscripts/initscripts-1.0/populate-volatile.sh     | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

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 22a71ec..35316ec 100755
--- a/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh
+++ b/meta/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh
@@ -25,8 +25,18 @@ COREDEF="00_core"
 [ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems."
 
 create_file() {
+	EXEC=""
+	[ -z "$2" ] && {
+		EXEC="
+		touch \"$1\";
+		"
+	} || {
+		EXEC="
+		cp \"$2\" \"$1\";
+		"
+	}
 	EXEC="
-	touch \"$1\";
+	${EXEC}
 	chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1;
 	chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 "
 
@@ -187,7 +197,9 @@ apply_cfgfile() {
 
 		case "${TTYPE}" in
 			"f")  [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-."
-				create_file "${TNAME}"
+				TSOURCE="$TLTARGET"
+				[ "${TSOURCE}" = "none" ] && TSOURCE=""
+				create_file "${TNAME}" "${TSOURCE}" &
 				;;
 			"d")  [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-."
 				mk_dir "${TNAME}"

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