sd-daemon: introduce sd_pid_notify() and sd_pid_notifyf()

[elogind.git] / src / core / main.c

diff --git a/src/core/main.c b/src/core/main.c
index 77cc2fbbdd93d9b253f575c3aa80ba8ce4a1be94..d5d1ee2b0ceff67aeb66dce923d525d3b41dd34d 100644 (file)
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1261,6 +1261,16 @@ static int status_welcome(void) {
                              isempty(pretty_name) ? "Linux" : pretty_name);
 }
 
+static int write_container_id(void) {
+        const char *c;
+
+        c = getenv("container");
+        if (isempty(c))
+                return 0;
+
+        return write_string_file("/run/systemd/container", c);
+}
+
 int main(int argc, char *argv[]) {
         Manager *m = NULL;
         int r, retval = EXIT_FAILURE;
@@ -1544,6 +1554,8 @@ int main(int argc, char *argv[]) {
                 if (virtualization)
                         log_info("Detected virtualization '%s'.", virtualization);
 
+                write_container_id();
+
                 log_info("Detected architecture '%s'.", architecture_to_string(uname_architecture()));
 
                 if (in_initrd())