40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
|
// Copyright 2018 Google Inc.
|
||
|
|
//
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
package host
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
// beforeSave is invoked by stateify.
|
||
|
|
func (ep *endpoint) beforeSave() {
|
||
|
|
if ep.srfd < 0 {
|
||
|
|
panic("only host file descriptors provided at sentry startup can be saved")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// afterLoad is invoked by stateify.
|
||
|
|
func (ep *endpoint) afterLoad() {
|
||
|
|
fd, err := syscall.Dup(ep.srfd)
|
||
|
|
if err != nil {
|
||
|
|
panic(fmt.Sprintf("failed to dup restored fd %d: %v", ep.srfd, err))
|
||
|
|
}
|
||
|
|
ep.fd = fd
|
||
|
|
if err := ep.init(); err != nil {
|
||
|
|
panic(fmt.Sprintf("Could not restore host socket fd %d: %v", ep.srfd, err))
|
||
|
|
}
|
||
|
|
}
|