Extract daemon to its own package

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

integration-cli/daemon/daemon_unix.go

@@ -0,0 +1,36 @@
+// +build !windows
+
+package daemon
+
+import (
+	"os"
+	"path/filepath"
+	"syscall"
+
+	"github.com/go-check/check"
+)
+
+func cleanupExecRoot(c *check.C, execRoot string) {
+	// Cleanup network namespaces in the exec root of this
+	// daemon because this exec root is specific to this
+	// daemon instance and has no chance of getting
+	// cleaned up when a new daemon is instantiated with a
+	// new exec root.
+	netnsPath := filepath.Join(execRoot, "netns")
+	filepath.Walk(netnsPath, func(path string, info os.FileInfo, err error) error {
+		if err := syscall.Unmount(path, syscall.MNT_FORCE); err != nil {
+			c.Logf("unmount of %s failed: %v", path, err)
+		}
+		os.Remove(path)
+		return nil
+	})
+}
+
+// SignalDaemonDump sends a signal to the daemon to write a dump file
+func SignalDaemonDump(pid int) {
+	syscall.Kill(pid, syscall.SIGQUIT)
+}
+
+func signalDaemonReload(pid int) error {
+	return syscall.Kill(pid, syscall.SIGHUP)
+}