dfaef9d393
reason: update license to Mulan PSL v2 Signed-off-by: taleintervenor <taleintervenor@aliyun.com>
48 lines
1.5 KiB
Go
48 lines
1.5 KiB
Go
// Copyright (c) Huawei Technologies Co., Ltd. 2018-2019. All rights reserved.
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// syscontainer-tools is licensed under the Mulan PSL v2.
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// You can use this software according to the terms and conditions of the Mulan PSL v2.
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// You may obtain a copy of Mulan PSL v2 at:
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// http://license.coscl.org.cn/MulanPSL2
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// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
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// PURPOSE.
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// See the Mulan PSL v2 for more details.
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// Description: recursive unmount
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// Author: zhangwei
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// Create: 2018-01-18
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package mount
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import (
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"sort"
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"strings"
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docker_mount "github.com/docker/docker/pkg/mount"
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)
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// RecursiveUnmount unmounts the target and all mounts underneath, starting with
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// the deepsest mount first.
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func RecursiveUnmount(target string) error {
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mounts, err := docker_mount.GetMounts()
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if err != nil {
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return err
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}
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// Make the deepest mount be first
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sort.Sort(sort.Reverse(byMountpoint(mounts)))
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for i, m := range mounts {
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if !strings.HasPrefix(m.Mountpoint, target) {
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continue
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}
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if err := docker_mount.Unmount(m.Mountpoint); err != nil && i == len(mounts)-1 {
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if mounted, err := docker_mount.Mounted(m.Mountpoint); err != nil || mounted {
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return err
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}
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// Ignore errors for submounts and continue trying to unmount others
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// The final unmount should fail if there ane any submounts remaining
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}
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}
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return nil
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}
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