snow/wireguard-go
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

namespaceapi: initial version

Browse source 
Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-08-30 14:41:33 +02:00
parent 14df9c3e75
commit a12b765784
3 changed files with 207 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
tun/wintun/namespaceapi/mksyscall.go Normal file
View file

@ -0,0 +1,8 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package namespaceapi
//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go namespaceapi_windows.go

83
tun/wintun/namespaceapi/namespaceapi_windows.go Normal file
View file

@ -0,0 +1,83 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package namespaceapi
import "golang.org/x/sys/windows"
//sys createBoundaryDescriptor(name *uint16, flags uint32) (handle windows.Handle, err error) = kernel32.CreateBoundaryDescriptorW
//sys deleteBoundaryDescriptor(boundaryDescriptor windows.Handle) = kernel32.DeleteBoundaryDescriptor
//sys addSIDToBoundaryDescriptor(boundaryDescriptor windows.Handle, requiredSid *windows.SID) (err error) = kernel32.AddSIDToBoundaryDescriptor
//sys createPrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) = kernel32.CreatePrivateNamespaceW
//sys openPrivateNamespace(boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) = kernel32.OpenPrivateNamespaceW
//sys closePrivateNamespace(handle windows.Handle, flags uint32) (err error) = kernel32.ClosePrivateNamespace
// BoundaryDescriptor represents a boundary that defines how the objects in the namespace are to be isolated.
type BoundaryDescriptor windows.Handle
// CreateBoundaryDescriptor creates a boundary descriptor.
func CreateBoundaryDescriptor(name string) (BoundaryDescriptor, error) {
name16, err := windows.UTF16PtrFromString(name)
if err != nil {
return 0, err
}
handle, err := createBoundaryDescriptor(name16, 0)
if err != nil {
return 0, err
}
return BoundaryDescriptor(handle), nil
}
// Delete deletes the specified boundary descriptor.
func (bd BoundaryDescriptor) Delete() {
deleteBoundaryDescriptor(windows.Handle(bd))
}
// AddSid adds a security identifier (SID) to the specified boundary descriptor.
func (bd BoundaryDescriptor) AddSid(requiredSid *windows.SID) error {
return addSIDToBoundaryDescriptor(windows.Handle(bd), requiredSid)
}
// PrivateNamespace represents a private namespace. Duh?!
type PrivateNamespace windows.Handle
// CreatePrivateNamespace creates a private namespace.
func CreatePrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor BoundaryDescriptor, aliasPrefix string) (PrivateNamespace, error) {
aliasPrefix16, err := windows.UTF16PtrFromString(aliasPrefix)
if err != nil {
return 0, err
}
handle, err := createPrivateNamespace(privateNamespaceAttributes, windows.Handle(boundaryDescriptor), aliasPrefix16)
if err != nil {
return 0, err
}
return PrivateNamespace(handle), nil
}
// OpenPrivateNamespace opens a private namespace.
func OpenPrivateNamespace(boundaryDescriptor BoundaryDescriptor, aliasPrefix string) (PrivateNamespace, error) {
aliasPrefix16, err := windows.UTF16PtrFromString(aliasPrefix)
if err != nil {
return 0, err
}
handle, err := openPrivateNamespace(windows.Handle(boundaryDescriptor), aliasPrefix16)
if err != nil {
return 0, err
}
return PrivateNamespace(handle), nil
}
// ClosePrivateNamespaceFlags describes flags that are used by PrivateNamespace's Close() method.
type ClosePrivateNamespaceFlags uint32
const (
// PrivateNamespaceFlagDestroy makes the close to destroy the namespace.
PrivateNamespaceFlagDestroy = ClosePrivateNamespaceFlags(0x1)
)
// Close closes an open namespace handle.
func (pns PrivateNamespace) Close(flags ClosePrivateNamespaceFlags) error {
return closePrivateNamespace(windows.Handle(pns), uint32(flags))
}

116
tun/wintun/namespaceapi/zsyscall_windows.go Normal file
View file

@ -0,0 +1,116 @@
// Code generated by 'go generate'; DO NOT EDIT.
package namespaceapi
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procCreateBoundaryDescriptorW = modkernel32.NewProc("CreateBoundaryDescriptorW")
procDeleteBoundaryDescriptor = modkernel32.NewProc("DeleteBoundaryDescriptor")
procAddSIDToBoundaryDescriptor = modkernel32.NewProc("AddSIDToBoundaryDescriptor")
procCreatePrivateNamespaceW = modkernel32.NewProc("CreatePrivateNamespaceW")
procOpenPrivateNamespaceW = modkernel32.NewProc("OpenPrivateNamespaceW")
procClosePrivateNamespace = modkernel32.NewProc("ClosePrivateNamespace")
)
func createBoundaryDescriptor(name *uint16, flags uint32) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procCreateBoundaryDescriptorW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(flags), 0)
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func deleteBoundaryDescriptor(boundaryDescriptor windows.Handle) {
syscall.Syscall(procDeleteBoundaryDescriptor.Addr(), 1, uintptr(boundaryDescriptor), 0, 0)
return
}
func addSIDToBoundaryDescriptor(boundaryDescriptor windows.Handle, requiredSid *windows.SID) (err error) {
r1, _, e1 := syscall.Syscall(procAddSIDToBoundaryDescriptor.Addr(), 2, uintptr(boundaryDescriptor), uintptr(unsafe.Pointer(requiredSid)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func createPrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procCreatePrivateNamespaceW.Addr(), 3, uintptr(unsafe.Pointer(privateNamespaceAttributes)), uintptr(boundaryDescriptor), uintptr(unsafe.Pointer(aliasPrefix)))
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func openPrivateNamespace(boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procOpenPrivateNamespaceW.Addr(), 2, uintptr(boundaryDescriptor), uintptr(unsafe.Pointer(aliasPrefix)), 0)
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func closePrivateNamespace(handle windows.Handle, flags uint32) (err error) {
r1, _, e1 := syscall.Syscall(procClosePrivateNamespace.Addr(), 2, uintptr(handle), uintptr(flags), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}