locale,firstboot: add headers to vconsole.conf

Closes #29717.
Replaces #29760.

Co-authored-by: cunshunxia <cunshunxia@tencent.com>

src/shared/env-file-label.c

@@ -19,3 +19,17 @@ int write_env_file_label(int dir_fd, const char *fname, char **headers, char **l
 
         return r;
 }
+
+int write_vconsole_conf_label(char **l) {
+        int r;
+
+        r = mac_selinux_create_file_prepare("/etc/vconsole.conf", S_IFREG);
+        if (r < 0)
+                return r;
+
+        r = write_vconsole_conf(AT_FDCWD, "/etc/vconsole.conf", l);
+
+        mac_selinux_create_file_clear();
+
+        return r;
+}

src/shared/env-file-label.h

@@ -6,3 +6,5 @@
  * for all */
 
 int write_env_file_label(int dir_fd, const char *fname, char **headers, char **l);
+
+int write_vconsole_conf_label(char **l);