49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
// Copyright 2020 The gVisor Authors.
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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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// https://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 shim
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import (
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"encoding/json"
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"io/ioutil"
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"path/filepath"
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)
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const filename = "state.json"
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// state holds information needed between shim invocations.
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type state struct {
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// Rootfs is the full path to the location rootfs was mounted.
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Rootfs string `json:"rootfs"`
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// Options is the configuration loaded from config.toml.
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Options options `json:"options"`
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}
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func (s state) load(path string) error {
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data, err := ioutil.ReadFile(filepath.Join(path, filename))
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if err != nil {
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return err
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}
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return json.Unmarshal(data, &s)
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}
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func (s state) save(path string) error {
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data, err := json.Marshal(&s)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(filepath.Join(path, filename), data, 0644)
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}
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