diff --git a/unix/syscall_bsd.go b/unix/syscall_bsd.go
index 9ebe92e..123536a 100644
--- a/unix/syscall_bsd.go
+++ b/unix/syscall_bsd.go
@@ -18,6 +18,21 @@
 	"unsafe"
 )
 
+const ImplementsGetwd = true
+
+func Getwd() (string, error) {
+	var buf [PathMax]byte
+	_, err := Getcwd(buf[0:])
+	if err != nil {
+		return "", err
+	}
+	n := clen(buf[:])
+	if n < 1 {
+		return "", EINVAL
+	}
+	return string(buf[:n]), nil
+}
+
 /*
  * Wrapped
  */
diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go
index eddcf3a..21b8092 100644
--- a/unix/syscall_darwin.go
+++ b/unix/syscall_darwin.go
@@ -13,29 +13,10 @@
 package unix
 
 import (
-	"errors"
 	"syscall"
 	"unsafe"
 )
 
-const ImplementsGetwd = true
-
-func Getwd() (string, error) {
-	buf := make([]byte, 2048)
-	attrs, err := getAttrList(".", attrList{CommonAttr: attrCmnFullpath}, buf, 0)
-	if err == nil && len(attrs) == 1 && len(attrs[0]) >= 2 {
-		wd := string(attrs[0])
-		// Sanity check that it's an absolute path and ends
-		// in a null byte, which we then strip.
-		if wd[0] == '/' && wd[len(wd)-1] == 0 {
-			return wd[:len(wd)-1], nil
-		}
-	}
-	// If pkg/os/getwd.go gets ENOTSUP, it will fall back to the
-	// slow algorithm.
-	return "", ENOTSUP
-}
-
 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
 type SockaddrDatalink struct {
 	Len    uint8
@@ -97,11 +78,6 @@
 func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) }
 func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) }
 
-const (
-	attrBitMapCount = 5
-	attrCmnFullpath = 0x08000000
-)
-
 type attrList struct {
 	bitmapCount uint16
 	_           uint16
@@ -112,54 +88,6 @@
 	Forkattr    uint32
 }
 
-func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) {
-	if len(attrBuf) < 4 {
-		return nil, errors.New("attrBuf too small")
-	}
-	attrList.bitmapCount = attrBitMapCount
-
-	var _p0 *byte
-	_p0, err = BytePtrFromString(path)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := getattrlist(_p0, unsafe.Pointer(&attrList), unsafe.Pointer(&attrBuf[0]), uintptr(len(attrBuf)), int(options)); err != nil {
-		return nil, err
-	}
-	size := *(*uint32)(unsafe.Pointer(&attrBuf[0]))
-
-	// dat is the section of attrBuf that contains valid data,
-	// without the 4 byte length header. All attribute offsets
-	// are relative to dat.
-	dat := attrBuf
-	if int(size) < len(attrBuf) {
-		dat = dat[:size]
-	}
-	dat = dat[4:] // remove length prefix
-
-	for i := uint32(0); int(i) < len(dat); {
-		header := dat[i:]
-		if len(header) < 8 {
-			return attrs, errors.New("truncated attribute header")
-		}
-		datOff := *(*int32)(unsafe.Pointer(&header[0]))
-		attrLen := *(*uint32)(unsafe.Pointer(&header[4]))
-		if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) {
-			return attrs, errors.New("truncated results; attrBuf too small")
-		}
-		end := uint32(datOff) + attrLen
-		attrs = append(attrs, dat[datOff:end])
-		i = end
-		if r := i % 4; r != 0 {
-			i += (4 - r)
-		}
-	}
-	return
-}
-
-//sys getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error)
-
 //sysnb pipe() (r int, w int, err error)
 
 func Pipe(p []int) (err error) {
@@ -419,6 +347,7 @@
 //sys	Fpathconf(fd int, name int) (val int, err error)
 //sys	Fsync(fd int) (err error)
 //sys	Ftruncate(fd int, length int64) (err error)
+//sys	Getcwd(buf []byte) (n int, err error)
 //sys	Getdtablesize() (size int)
 //sysnb	Getegid() (egid int)
 //sysnb	Geteuid() (uid int)
diff --git a/unix/syscall_dragonfly.go b/unix/syscall_dragonfly.go
index 8a195ae..bed7dcf 100644
--- a/unix/syscall_dragonfly.go
+++ b/unix/syscall_dragonfly.go
@@ -129,23 +129,8 @@
 	return
 }
 
-const ImplementsGetwd = true
-
 //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
 
-func Getwd() (string, error) {
-	var buf [PathMax]byte
-	_, err := Getcwd(buf[0:])
-	if err != nil {
-		return "", err
-	}
-	n := clen(buf[:])
-	if n < 1 {
-		return "", EINVAL
-	}
-	return string(buf[:n]), nil
-}
-
 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 	var _p0 unsafe.Pointer
 	var bufsize uintptr
diff --git a/unix/syscall_freebsd.go b/unix/syscall_freebsd.go
index 6932e7c..f6db02a 100644
--- a/unix/syscall_freebsd.go
+++ b/unix/syscall_freebsd.go
@@ -140,23 +140,8 @@
 	return
 }
 
-const ImplementsGetwd = true
-
 //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
 
-func Getwd() (string, error) {
-	var buf [PathMax]byte
-	_, err := Getcwd(buf[0:])
-	if err != nil {
-		return "", err
-	}
-	n := clen(buf[:])
-	if n < 1 {
-		return "", EINVAL
-	}
-	return string(buf[:n]), nil
-}
-
 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 	var (
 		_p0          unsafe.Pointer
diff --git a/unix/syscall_netbsd.go b/unix/syscall_netbsd.go
index 45b50a6..dbd5e03 100644
--- a/unix/syscall_netbsd.go
+++ b/unix/syscall_netbsd.go
@@ -141,23 +141,8 @@
 	return
 }
 
-const ImplementsGetwd = true
-
 //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
 
-func Getwd() (string, error) {
-	var buf [PathMax]byte
-	_, err := Getcwd(buf[0:])
-	if err != nil {
-		return "", err
-	}
-	n := clen(buf[:])
-	if n < 1 {
-		return "", EINVAL
-	}
-	return string(buf[:n]), nil
-}
-
 // TODO
 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
 	return -1, ENOSYS
diff --git a/unix/syscall_openbsd.go b/unix/syscall_openbsd.go
index a266e92..2c1f46e 100644
--- a/unix/syscall_openbsd.go
+++ b/unix/syscall_openbsd.go
@@ -114,23 +114,8 @@
 	return
 }
 
-const ImplementsGetwd = true
-
 //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
 
-func Getwd() (string, error) {
-	var buf [PathMax]byte
-	_, err := Getcwd(buf[0:])
-	if err != nil {
-		return "", err
-	}
-	n := clen(buf[:])
-	if n < 1 {
-		return "", EINVAL
-	}
-	return string(buf[:n]), nil
-}
-
 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
 	if raceenabled {
 		raceReleaseMerge(unsafe.Pointer(&ioSync))
diff --git a/unix/types_darwin.go b/unix/types_darwin.go
index 155c2e6..c3bb627 100644
--- a/unix/types_darwin.go
+++ b/unix/types_darwin.go
@@ -125,6 +125,12 @@
 
 type Dirent C.struct_dirent
 
+// File system limits
+
+const (
+	PathMax = C.PATH_MAX
+)
+
 // Sockets
 
 type RawSockaddrInet4 C.struct_sockaddr_in
diff --git a/unix/zsyscall_darwin_386.go b/unix/zsyscall_darwin_386.go
index 3976147..bd13b38 100644
--- a/unix/zsyscall_darwin_386.go
+++ b/unix/zsyscall_darwin_386.go
@@ -490,21 +490,6 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) {
-	_, _, e1 := syscall_syscall6(funcPC(libc_getattrlist_trampoline), uintptr(unsafe.Pointer(path)), uintptr(list), uintptr(buf), uintptr(size), uintptr(options), 0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-func libc_getattrlist_trampoline()
-
-//go:linkname libc_getattrlist libc_getattrlist
-//go:cgo_import_dynamic libc_getattrlist getattrlist "/usr/lib/libSystem.B.dylib"
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func pipe() (r int, w int, err error) {
 	r0, r1, e1 := syscall_rawSyscall(funcPC(libc_pipe_trampoline), 0, 0, 0)
 	r = int(r0)
@@ -1277,6 +1262,28 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getcwd(buf []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := syscall_syscall(funcPC(libc_getcwd_trampoline), uintptr(_p0), uintptr(len(buf)), 0)
+	n = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+func libc_getcwd_trampoline()
+
+//go:linkname libc_getcwd libc_getcwd
+//go:cgo_import_dynamic libc_getcwd getcwd "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdtablesize() (size int) {
 	r0, _, _ := syscall_syscall(funcPC(libc_getdtablesize_trampoline), 0, 0, 0)
 	size = int(r0)
diff --git a/unix/zsyscall_darwin_386.s b/unix/zsyscall_darwin_386.s
index 961058d..d5fb53f 100644
--- a/unix/zsyscall_darwin_386.s
+++ b/unix/zsyscall_darwin_386.s
@@ -60,8 +60,6 @@
 	JMP	libc_munlock(SB)
 TEXT ·libc_munlockall_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_munlockall(SB)
-TEXT ·libc_getattrlist_trampoline(SB),NOSPLIT,$0-0
-	JMP	libc_getattrlist(SB)
 TEXT ·libc_pipe_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_pipe(SB)
 TEXT ·libc_getxattr_trampoline(SB),NOSPLIT,$0-0
@@ -146,6 +144,8 @@
 	JMP	libc_fsync(SB)
 TEXT ·libc_ftruncate_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_ftruncate(SB)
+TEXT ·libc_getcwd_trampoline(SB),NOSPLIT,$0-0
+	JMP	libc_getcwd(SB)
 TEXT ·libc_getdtablesize_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_getdtablesize(SB)
 TEXT ·libc_getegid_trampoline(SB),NOSPLIT,$0-0
diff --git a/unix/zsyscall_darwin_amd64.go b/unix/zsyscall_darwin_amd64.go
index e253f43..d81696f 100644
--- a/unix/zsyscall_darwin_amd64.go
+++ b/unix/zsyscall_darwin_amd64.go
@@ -490,21 +490,6 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) {
-	_, _, e1 := syscall_syscall6(funcPC(libc_getattrlist_trampoline), uintptr(unsafe.Pointer(path)), uintptr(list), uintptr(buf), uintptr(size), uintptr(options), 0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-func libc_getattrlist_trampoline()
-
-//go:linkname libc_getattrlist libc_getattrlist
-//go:cgo_import_dynamic libc_getattrlist getattrlist "/usr/lib/libSystem.B.dylib"
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func pipe() (r int, w int, err error) {
 	r0, r1, e1 := syscall_rawSyscall(funcPC(libc_pipe_trampoline), 0, 0, 0)
 	r = int(r0)
@@ -1277,6 +1262,28 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getcwd(buf []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := syscall_syscall(funcPC(libc_getcwd_trampoline), uintptr(_p0), uintptr(len(buf)), 0)
+	n = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+func libc_getcwd_trampoline()
+
+//go:linkname libc_getcwd libc_getcwd
+//go:cgo_import_dynamic libc_getcwd getcwd "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdtablesize() (size int) {
 	r0, _, _ := syscall_syscall(funcPC(libc_getdtablesize_trampoline), 0, 0, 0)
 	size = int(r0)
diff --git a/unix/zsyscall_darwin_amd64.s b/unix/zsyscall_darwin_amd64.s
index b8be24c..887fd5f 100644
--- a/unix/zsyscall_darwin_amd64.s
+++ b/unix/zsyscall_darwin_amd64.s
@@ -60,8 +60,6 @@
 	JMP	libc_munlock(SB)
 TEXT ·libc_munlockall_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_munlockall(SB)
-TEXT ·libc_getattrlist_trampoline(SB),NOSPLIT,$0-0
-	JMP	libc_getattrlist(SB)
 TEXT ·libc_pipe_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_pipe(SB)
 TEXT ·libc_getxattr_trampoline(SB),NOSPLIT,$0-0
@@ -146,6 +144,8 @@
 	JMP	libc_fsync(SB)
 TEXT ·libc_ftruncate_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_ftruncate(SB)
+TEXT ·libc_getcwd_trampoline(SB),NOSPLIT,$0-0
+	JMP	libc_getcwd(SB)
 TEXT ·libc_getdtablesize_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_getdtablesize(SB)
 TEXT ·libc_getegid_trampoline(SB),NOSPLIT,$0-0
diff --git a/unix/zsyscall_darwin_arm.go b/unix/zsyscall_darwin_arm.go
index be2e283..d6b5249 100644
--- a/unix/zsyscall_darwin_arm.go
+++ b/unix/zsyscall_darwin_arm.go
@@ -490,21 +490,6 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) {
-	_, _, e1 := syscall_syscall6(funcPC(libc_getattrlist_trampoline), uintptr(unsafe.Pointer(path)), uintptr(list), uintptr(buf), uintptr(size), uintptr(options), 0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-func libc_getattrlist_trampoline()
-
-//go:linkname libc_getattrlist libc_getattrlist
-//go:cgo_import_dynamic libc_getattrlist getattrlist "/usr/lib/libSystem.B.dylib"
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func pipe() (r int, w int, err error) {
 	r0, r1, e1 := syscall_rawSyscall(funcPC(libc_pipe_trampoline), 0, 0, 0)
 	r = int(r0)
@@ -1277,6 +1262,28 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getcwd(buf []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := syscall_syscall(funcPC(libc_getcwd_trampoline), uintptr(_p0), uintptr(len(buf)), 0)
+	n = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+func libc_getcwd_trampoline()
+
+//go:linkname libc_getcwd libc_getcwd
+//go:cgo_import_dynamic libc_getcwd getcwd "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdtablesize() (size int) {
 	r0, _, _ := syscall_syscall(funcPC(libc_getdtablesize_trampoline), 0, 0, 0)
 	size = int(r0)
diff --git a/unix/zsyscall_darwin_arm.s b/unix/zsyscall_darwin_arm.s
index 403c21f..5eec5f1 100644
--- a/unix/zsyscall_darwin_arm.s
+++ b/unix/zsyscall_darwin_arm.s
@@ -60,8 +60,6 @@
 	JMP	libc_munlock(SB)
 TEXT ·libc_munlockall_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_munlockall(SB)
-TEXT ·libc_getattrlist_trampoline(SB),NOSPLIT,$0-0
-	JMP	libc_getattrlist(SB)
 TEXT ·libc_pipe_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_pipe(SB)
 TEXT ·libc_getxattr_trampoline(SB),NOSPLIT,$0-0
@@ -146,6 +144,8 @@
 	JMP	libc_fsync(SB)
 TEXT ·libc_ftruncate_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_ftruncate(SB)
+TEXT ·libc_getcwd_trampoline(SB),NOSPLIT,$0-0
+	JMP	libc_getcwd(SB)
 TEXT ·libc_getdtablesize_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_getdtablesize(SB)
 TEXT ·libc_getegid_trampoline(SB),NOSPLIT,$0-0
diff --git a/unix/zsyscall_darwin_arm64.go b/unix/zsyscall_darwin_arm64.go
index 34976a4..0863843 100644
--- a/unix/zsyscall_darwin_arm64.go
+++ b/unix/zsyscall_darwin_arm64.go
@@ -490,21 +490,6 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) {
-	_, _, e1 := syscall_syscall6(funcPC(libc_getattrlist_trampoline), uintptr(unsafe.Pointer(path)), uintptr(list), uintptr(buf), uintptr(size), uintptr(options), 0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-func libc_getattrlist_trampoline()
-
-//go:linkname libc_getattrlist libc_getattrlist
-//go:cgo_import_dynamic libc_getattrlist getattrlist "/usr/lib/libSystem.B.dylib"
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func pipe() (r int, w int, err error) {
 	r0, r1, e1 := syscall_rawSyscall(funcPC(libc_pipe_trampoline), 0, 0, 0)
 	r = int(r0)
@@ -1277,6 +1262,28 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getcwd(buf []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := syscall_syscall(funcPC(libc_getcwd_trampoline), uintptr(_p0), uintptr(len(buf)), 0)
+	n = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+func libc_getcwd_trampoline()
+
+//go:linkname libc_getcwd libc_getcwd
+//go:cgo_import_dynamic libc_getcwd getcwd "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Getdtablesize() (size int) {
 	r0, _, _ := syscall_syscall(funcPC(libc_getdtablesize_trampoline), 0, 0, 0)
 	size = int(r0)
diff --git a/unix/zsyscall_darwin_arm64.s b/unix/zsyscall_darwin_arm64.s
index abe7b6e..16aebee 100644
--- a/unix/zsyscall_darwin_arm64.s
+++ b/unix/zsyscall_darwin_arm64.s
@@ -60,8 +60,6 @@
 	JMP	libc_munlock(SB)
 TEXT ·libc_munlockall_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_munlockall(SB)
-TEXT ·libc_getattrlist_trampoline(SB),NOSPLIT,$0-0
-	JMP	libc_getattrlist(SB)
 TEXT ·libc_pipe_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_pipe(SB)
 TEXT ·libc_getxattr_trampoline(SB),NOSPLIT,$0-0
@@ -146,6 +144,8 @@
 	JMP	libc_fsync(SB)
 TEXT ·libc_ftruncate_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_ftruncate(SB)
+TEXT ·libc_getcwd_trampoline(SB),NOSPLIT,$0-0
+	JMP	libc_getcwd(SB)
 TEXT ·libc_getdtablesize_trampoline(SB),NOSPLIT,$0-0
 	JMP	libc_getdtablesize(SB)
 TEXT ·libc_getegid_trampoline(SB),NOSPLIT,$0-0
diff --git a/unix/ztypes_darwin_386.go b/unix/ztypes_darwin_386.go
index 9f47b87..6103f21 100644
--- a/unix/ztypes_darwin_386.go
+++ b/unix/ztypes_darwin_386.go
@@ -145,6 +145,10 @@
 	_       [3]byte
 }
 
+const (
+	PathMax = 0x400
+)
+
 type RawSockaddrInet4 struct {
 	Len    uint8
 	Family uint8
diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go
index 966798a..e6576d1 100644
--- a/unix/ztypes_darwin_amd64.go
+++ b/unix/ztypes_darwin_amd64.go
@@ -151,6 +151,10 @@
 	_       [3]byte
 }
 
+const (
+	PathMax = 0x400
+)
+
 type RawSockaddrInet4 struct {
 	Len    uint8
 	Family uint8
diff --git a/unix/ztypes_darwin_arm.go b/unix/ztypes_darwin_arm.go
index 4fe4c9c..af9560f 100644
--- a/unix/ztypes_darwin_arm.go
+++ b/unix/ztypes_darwin_arm.go
@@ -146,6 +146,10 @@
 	_       [3]byte
 }
 
+const (
+	PathMax = 0x400
+)
+
 type RawSockaddrInet4 struct {
 	Len    uint8
 	Family uint8
diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go
index 21999e4..a09c0f9 100644
--- a/unix/ztypes_darwin_arm64.go
+++ b/unix/ztypes_darwin_arm64.go
@@ -151,6 +151,10 @@
 	_       [3]byte
 }
 
+const (
+	PathMax = 0x400
+)
+
 type RawSockaddrInet4 struct {
 	Len    uint8
 	Family uint8