Move around code for better clarity

pkg/init/prepare/prepare.go

@@ -0,0 +1,41 @@
+package prepare
+
+import (
+	"os"
+	"strings"
+
+	"github.com/rancher/os/config"
+	"github.com/rancher/os/pkg/dfs"
+	"github.com/rancher/os/pkg/log"
+)
+
+var (
+	mountConfig = dfs.Config{
+		CgroupHierarchy: map[string]string{
+			"cpu":      "cpu",
+			"cpuacct":  "cpu",
+			"net_cls":  "net_cls",
+			"net_prio": "net_cls",
+		},
+	}
+)
+
+func FS(c *config.CloudConfig) (*config.CloudConfig, error) {
+	return c, dfs.PrepareFs(&mountConfig)
+}
+
+func SaveCmdline(c *config.CloudConfig) (*config.CloudConfig, error) {
+	// the Kernel Patch added for RancherOS passes `--` (only) elided kernel boot params to the init process
+	cmdLineArgs := strings.Join(os.Args, " ")
+	config.SaveInitCmdline(cmdLineArgs)
+
+	cfg := config.LoadConfig()
+	log.Debugf("Cmdline debug = %t", cfg.Rancher.Debug)
+	if cfg.Rancher.Debug {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetLevel(log.InfoLevel)
+	}
+
+	return cfg, nil
+}