core: add RootImage= setting for using a specific image file as root directory for a service

This is similar to RootDirectory= but mounts the root file system from a
block device or loopback file instead of another directory.

This reuses the image dissector code now used by nspawn and
gpt-auto-discovery.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/test/test-ns.c b/src/test/test-ns.c
index c99bcb371b..0125d905a6 100644
--- a/src/test/test-ns.c
+++ b/src/test/test-ns.c
@@ -77,6 +77,7 @@ int main(int argc, char *argv[]) {
                 log_info("Not chrooted");
 
         r = setup_namespace(root_directory,
+                            NULL,
                             &ns_info,
                             (char **) writable,
                             (char **) readonly,
@@ -86,6 +87,7 @@ int main(int argc, char *argv[]) {
                             var_tmp_dir,
                             PROTECT_HOME_NO,
                             PROTECT_SYSTEM_NO,
+                            0,
                             0);
         if (r < 0) {
                 log_error_errno(r, "Failed to setup namespace: %m");