diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go
index 4ee4b31..26b8360 100644
--- a/unix/syscall_darwin.go
+++ b/unix/syscall_darwin.go
@@ -195,6 +195,45 @@
 
 func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) }
 
+//sys	ioctl(fd int, req uint, arg uintptr) (err error)
+
+// ioctl itself should not be exposed directly, but additional get/set
+// functions for specific types are permissible.
+
+// IoctlSetInt performs an ioctl operation which sets an integer value
+// on fd, using the specified request number.
+func IoctlSetInt(fd int, req uint, value int) error {
+	return ioctl(fd, req, uintptr(value))
+}
+
+func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
+	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
+}
+
+func IoctlSetTermios(fd int, req uint, value *Termios) error {
+	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
+}
+
+// IoctlGetInt performs an ioctl operation which gets an integer value
+// from fd, using the specified request number.
+func IoctlGetInt(fd int, req uint) (int, error) {
+	var value int
+	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+	return value, err
+}
+
+func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
+	var value Winsize
+	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+	return &value, err
+}
+
+func IoctlGetTermios(fd int, req uint) (*Termios, error) {
+	var value Termios
+	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+	return &value, err
+}
+
 /*
  * Exposed directly
  */
diff --git a/unix/types_darwin.go b/unix/types_darwin.go
index 74ff1ac..415124d 100644
--- a/unix/types_darwin.go
+++ b/unix/types_darwin.go
@@ -242,6 +242,8 @@
 
 type Termios C.struct_termios
 
+type Winsize C.struct_winsize
+
 // fchmodat-like syscalls.
 
 const (
diff --git a/unix/zsyscall_darwin_386.go b/unix/zsyscall_darwin_386.go
index 2198f0b..92708ac 100644
--- a/unix/zsyscall_darwin_386.go
+++ b/unix/zsyscall_darwin_386.go
@@ -298,6 +298,16 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func ioctl(fd int, req uint, arg uintptr) (err error) {
+	_, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Access(path string, mode uint32) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
diff --git a/unix/zsyscall_darwin_amd64.go b/unix/zsyscall_darwin_amd64.go
index d5af924..44fc14f 100644
--- a/unix/zsyscall_darwin_amd64.go
+++ b/unix/zsyscall_darwin_amd64.go
@@ -298,6 +298,16 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func ioctl(fd int, req uint, arg uintptr) (err error) {
+	_, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Access(path string, mode uint32) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
diff --git a/unix/zsyscall_darwin_arm.go b/unix/zsyscall_darwin_arm.go
index d516409..f4566bd 100644
--- a/unix/zsyscall_darwin_arm.go
+++ b/unix/zsyscall_darwin_arm.go
@@ -1,5 +1,5 @@
-// mksyscall.pl -l32 -tags darwin,arm syscall_bsd.go syscall_darwin.go syscall_darwin_arm.go
-// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
+// mksyscall.pl -tags darwin,arm syscall_bsd.go syscall_darwin.go syscall_darwin_arm.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
 
 // +build darwin,arm
 
@@ -298,6 +298,16 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func ioctl(fd int, req uint, arg uintptr) (err error) {
+	_, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Access(path string, mode uint32) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
diff --git a/unix/zsyscall_darwin_arm64.go b/unix/zsyscall_darwin_arm64.go
index e97759c..9274b9a 100644
--- a/unix/zsyscall_darwin_arm64.go
+++ b/unix/zsyscall_darwin_arm64.go
@@ -1,5 +1,5 @@
 // mksyscall.pl -tags darwin,arm64 syscall_bsd.go syscall_darwin.go syscall_darwin_arm64.go
-// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
+// Code generated by the command above; see README.md. DO NOT EDIT.
 
 // +build darwin,arm64
 
@@ -298,6 +298,16 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func ioctl(fd int, req uint, arg uintptr) (err error) {
+	_, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Access(path string, mode uint32) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
diff --git a/unix/ztypes_darwin_386.go b/unix/ztypes_darwin_386.go
index 062bdff..e61d78a 100644
--- a/unix/ztypes_darwin_386.go
+++ b/unix/ztypes_darwin_386.go
@@ -447,6 +447,13 @@
 	Ospeed uint32
 }
 
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
+
 const (
 	AT_FDCWD            = -0x2
 	AT_REMOVEDIR        = 0x80
diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go
index 590067f..2619155 100644
--- a/unix/ztypes_darwin_amd64.go
+++ b/unix/ztypes_darwin_amd64.go
@@ -457,6 +457,13 @@
 	Ospeed    uint64
 }
 
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
+
 const (
 	AT_FDCWD            = -0x2
 	AT_REMOVEDIR        = 0x80
diff --git a/unix/ztypes_darwin_arm.go b/unix/ztypes_darwin_arm.go
index 66df363..be3efa3 100644
--- a/unix/ztypes_darwin_arm.go
+++ b/unix/ztypes_darwin_arm.go
@@ -447,3 +447,10 @@
 	Ispeed uint32
 	Ospeed uint32
 }
+
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go
index 85d56ea..8756d04 100644
--- a/unix/ztypes_darwin_arm64.go
+++ b/unix/ztypes_darwin_arm64.go
@@ -455,3 +455,10 @@
 	Ispeed    uint64
 	Ospeed    uint64
 }
+
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}