pkg/ns: use unix.Setns() instead of open coding it

Use unix.Setns() instead of manually re-implementing it using
unix.Syscall().

diff --git a/pkg/ns/ns_linux.go b/pkg/ns/ns_linux.go
index c9e1b4f..8949d21 100644 (file)
--- a/pkg/ns/ns_linux.go
+++ b/pkg/ns/ns_linux.go
@@ -141,7 +141,7 @@ func (ns *netNS) Set() error {
                return err
        }
 
-       if _, _, err := unix.Syscall(unix.SYS_SETNS, ns.Fd(), uintptr(unix.CLONE_NEWNET), 0); err != 0 {
+       if err := unix.Setns(int(ns.Fd()), unix.CLONE_NEWNET); err != nil {
                return fmt.Errorf("Error switching to ns %v: %v", ns.file.Name(), err)
        }