43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package host
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import (
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"fmt"
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"syscall"
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"gvisor.googlesource.com/gvisor/pkg/fd"
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)
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// beforeSave is invoked by stateify.
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func (c *ConnectedEndpoint) beforeSave() {
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if c.srfd < 0 {
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panic("only host file descriptors provided at sentry startup can be saved")
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}
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}
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// afterLoad is invoked by stateify.
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func (c *ConnectedEndpoint) afterLoad() {
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f, err := syscall.Dup(c.srfd)
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if err != nil {
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panic(fmt.Sprintf("failed to dup restored FD %d: %v", c.srfd, err))
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}
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c.file = fd.New(f)
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if err := c.init(); err != nil {
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panic(fmt.Sprintf("Could not restore host socket FD %d: %v", c.srfd, err))
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}
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c.Init()
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}
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