c76bf55047
Provide a snapshotter opt to add labels used by any supporting snapshotter to handle user namespace filesystem remapping. Currently supported by the fuse-overlayfs snapshotter, and others can use this information as well. Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
36 lines
1.2 KiB
Go
36 lines
1.2 KiB
Go
// +build !windows
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/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package containerd
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import (
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"fmt"
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"github.com/containerd/containerd/snapshots"
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)
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// WithRemapperLabels creates the labels used by any supporting snapshotter
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// to shift the filesystem ownership (user namespace mapping) automatically; currently
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// supported by the fuse-overlayfs snapshotter
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func WithRemapperLabels(ctrUID, hostUID, ctrGID, hostGID, length uint32) snapshots.Opt {
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return snapshots.WithLabels(map[string]string{
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"containerd.io/snapshot/uidmapping": fmt.Sprintf("%d:%d:%d", ctrUID, hostUID, length),
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"containerd.io/snapshot/gidmapping": fmt.Sprintf("%d:%d:%d", ctrGID, hostGID, length),
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})
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}
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