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https://github.com/NVIDIA/nvidia-container-toolkit
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b68b3c543b
This mirrors what is done in cri-o and allows for devices nodes from, for example, the driver container to be injected into a container at /dev instead of <ROOT>/dev Signed-off-by: Evan Lezar <elezar@nvidia.com>
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/**
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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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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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**/
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package edits
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
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"github.com/container-orchestrated-devices/container-device-interface/specs-go"
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"github.com/opencontainers/runc/libcontainer/devices"
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)
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type device discover.Device
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// toEdits converts a discovered device to CDI Container Edits.
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func (d device) toEdits() (*cdi.ContainerEdits, error) {
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deviceNode, err := d.toSpec()
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if err != nil {
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return nil, err
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}
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e := cdi.ContainerEdits{
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ContainerEdits: &specs.ContainerEdits{
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DeviceNodes: []*specs.DeviceNode{deviceNode},
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},
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}
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return &e, nil
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}
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// toSpec converts a discovered Device to a CDI Spec Device. Note
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// that missing info is filled in when edits are applied by querying the Device node.
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func (d device) toSpec() (*specs.DeviceNode, error) {
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// NOTE: This mirrors what cri-o does.
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// https://github.com/cri-o/cri-o/blob/ca3bb80a3dda0440659fcf8da8ed6f23211de94e/internal/config/device/device.go#L93
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// This can be removed once https://github.com/container-orchestrated-devices/container-device-interface/issues/72 is addressed
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dev, err := devices.DeviceFromPath(d.HostPath, "rwm")
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if err != nil {
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return nil, fmt.Errorf("failed to query device node %v: %v", d.HostPath, err)
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}
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s := specs.DeviceNode{
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Path: d.Path,
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Type: string(dev.Type),
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Major: dev.Major,
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Minor: dev.Minor,
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FileMode: &dev.FileMode,
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UID: &dev.Uid,
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GID: &dev.Gid,
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}
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return &s, nil
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}
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