diff --git a/vendor/golang.org/x/sys/unix/fcntl.go b/vendor/golang.org/x/sys/unix/fcntl.go
index 39c03f1..4dc5348 100644
--- a/vendor/golang.org/x/sys/unix/fcntl.go
+++ b/vendor/golang.org/x/sys/unix/fcntl.go
@@ -9,12 +9,11 @@
 import "unsafe"
 
 // fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
-// systems by flock_linux_32bit.go to be SYS_FCNTL64.
+// systems by fcntl_linux_32bit.go to be SYS_FCNTL64.
 var fcntl64Syscall uintptr = SYS_FCNTL
 
-// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
-func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
-	valptr, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(arg))
+func fcntl(fd int, cmd, arg int) (int, error) {
+	valptr, _, errno := Syscall(fcntl64Syscall, uintptr(fd), uintptr(cmd), uintptr(arg))
 	var err error
 	if errno != 0 {
 		err = errno
@@ -22,6 +21,11 @@
 	return int(valptr), err
 }
 
+// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
+func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
+	return fcntl(int(fd), cmd, arg)
+}
+
 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
 func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
 	_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))