From: Roman Yeryomin <leroi.lists@gmail.com>
Date: Sat, 19 Dec 2015 21:38:02 +0000 (+0200)
Subject: fstools: allow to stack another overlay on top of existing one
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=d90165cdbdac40e6e2699d831e13473479d8cb79;p=oweals%2Ffstools.git

fstools: allow to stack another overlay on top of existing one

`mount_root ram' will pivot existing root to ram even if it was
overlayfs already. Useful when playing with new configurations
as it allows to preserve existing/stable configuration.

Signed-off-by: Roman Yeryomin <roman@advem.lv>
---

diff --git a/mount_root.c b/mount_root.c
index 7b69c7f..bf70265 100644
--- a/mount_root.c
+++ b/mount_root.c
@@ -117,6 +117,8 @@ int main(int argc, char **argv)
 {
 	if (argc < 2)
 		return start(argc, argv);
+	if (!strcmp(argv[1], "ram"))
+		return ramoverlay();
 	if (!strcmp(argv[1], "stop"))
 		return stop(argc, argv);
 	if (!strcmp(argv[1], "done"))