26 lines
1000 B
Go
26 lines
1000 B
Go
// Copyright 2020 The gVisor Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build arm64
|
|
|
|
package flipcall
|
|
|
|
import "golang.org/x/sys/unix"
|
|
|
|
// Return a memory mapping of the pwd in memory that can be shared outside the sandbox.
|
|
func packetWindowMmap(pwd PacketWindowDescriptor) (uintptr, unix.Errno) {
|
|
m, _, err := unix.RawSyscall6(unix.SYS_MMAP, 0, uintptr(pwd.Length), unix.PROT_READ|unix.PROT_WRITE, unix.MAP_SHARED, uintptr(pwd.FD), uintptr(pwd.Offset))
|
|
return m, err
|
|
}
|