diff --git a/unix/syscall_netbsd.go b/unix/syscall_netbsd.go
index 5240e16e..8f4c320e 100644
--- a/unix/syscall_netbsd.go
+++ b/unix/syscall_netbsd.go
@@ -120,9 +120,30 @@ func Pipe(p []int) (err error) {
 	return
 }
 
-//sys getdents(fd int, buf []byte) (n int, err error)
+//sys Getdents(fd int, buf []byte) (n int, err error)
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
-	return getdents(fd, buf)
+	n, err = Getdents(fd, buf)
+	if err != nil || basep == nil {
+		return
+	}
+
+	var off int64
+	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
+	if err != nil {
+		*basep = ^uintptr(0)
+		return
+	}
+	*basep = uintptr(off)
+	if unsafe.Sizeof(*basep) == 8 {
+		return
+	}
+	if off>>4 != 0 {
+		// We can't stuff the offset back into a uintptr, so any
+		// future calls would be suspect. Generate an error.
+		// EIO is allowed by getdirentries.
+		err = EIO
+	}
+	return
 }
 
 const ImplementsGetwd = true
diff --git a/unix/syscall_openbsd.go b/unix/syscall_openbsd.go
index c8648ec0..276c93be 100644
--- a/unix/syscall_openbsd.go
+++ b/unix/syscall_openbsd.go
@@ -89,9 +89,30 @@ func Pipe(p []int) (err error) {
 	return
 }
 
-//sys getdents(fd int, buf []byte) (n int, err error)
+//sys Getdents(fd int, buf []byte) (n int, err error)
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
-	return getdents(fd, buf)
+	n, err = Getdents(fd, buf)
+	if err != nil || basep == nil {
+		return
+	}
+
+	var off int64
+	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
+	if err != nil {
+		*basep = ^uintptr(0)
+		return
+	}
+	*basep = uintptr(off)
+	if unsafe.Sizeof(*basep) == 8 {
+		return
+	}
+	if off>>4 != 0 {
+		// We can't stuff the offset back into a uintptr, so any
+		// future calls would be suspect. Generate an error.
+		// EIO was allowed by getdirentries.
+		err = EIO
+	}
+	return
 }
 
 const ImplementsGetwd = true
diff --git a/unix/zsyscall_netbsd_386.go b/unix/zsyscall_netbsd_386.go
index 642db767..7e058266 100644
--- a/unix/zsyscall_netbsd_386.go
+++ b/unix/zsyscall_netbsd_386.go
@@ -389,7 +389,7 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_netbsd_amd64.go b/unix/zsyscall_netbsd_amd64.go
index 59585fee..d94d076a 100644
--- a/unix/zsyscall_netbsd_amd64.go
+++ b/unix/zsyscall_netbsd_amd64.go
@@ -389,7 +389,7 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_netbsd_arm.go b/unix/zsyscall_netbsd_arm.go
index 6ec31434..cf5bf3d0 100644
--- a/unix/zsyscall_netbsd_arm.go
+++ b/unix/zsyscall_netbsd_arm.go
@@ -389,7 +389,7 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_netbsd_arm64.go b/unix/zsyscall_netbsd_arm64.go
index 603d1443..243a9317 100644
--- a/unix/zsyscall_netbsd_arm64.go
+++ b/unix/zsyscall_netbsd_arm64.go
@@ -389,7 +389,7 @@ func pipe() (fd1 int, fd2 int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_openbsd_386.go b/unix/zsyscall_openbsd_386.go
index 6a489fac..a9532d07 100644
--- a/unix/zsyscall_openbsd_386.go
+++ b/unix/zsyscall_openbsd_386.go
@@ -387,7 +387,7 @@ func pipe(p *[2]_C_int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_openbsd_amd64.go b/unix/zsyscall_openbsd_amd64.go
index 30cba434..0cb9f017 100644
--- a/unix/zsyscall_openbsd_amd64.go
+++ b/unix/zsyscall_openbsd_amd64.go
@@ -387,7 +387,7 @@ func pipe(p *[2]_C_int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_openbsd_arm.go b/unix/zsyscall_openbsd_arm.go
index fa1beda3..6fc99b54 100644
--- a/unix/zsyscall_openbsd_arm.go
+++ b/unix/zsyscall_openbsd_arm.go
@@ -387,7 +387,7 @@ func pipe(p *[2]_C_int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
diff --git a/unix/zsyscall_openbsd_arm64.go b/unix/zsyscall_openbsd_arm64.go
index eb589904..27878a72 100644
--- a/unix/zsyscall_openbsd_arm64.go
+++ b/unix/zsyscall_openbsd_arm64.go
@@ -387,7 +387,7 @@ func pipe(p *[2]_C_int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func getdents(fd int, buf []byte) (n int, err error) {
+func Getdents(fd int, buf []byte) (n int, err error) {
 	var _p0 unsafe.Pointer
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])