mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-29 16:02:10 +00:00
8bb0235c92
These changes remove the use of discover.Config which was used to pass the driver root and the nvidiaCTK path in some cases. Instead, the nvidiaCTKPath is resolved at the begining of runtime invocation to ensure that this is valid at all points where it is used. Signed-off-by: Evan Lezar <elezar@nvidia.com>
72 lines
2.4 KiB
Go
72 lines
2.4 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 modifier
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config/image"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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"github.com/sirupsen/logrus"
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)
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// NewGraphicsModifier constructs a modifier that injects graphics-related modifications into an OCI runtime specification.
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// The value of the NVIDIA_DRIVER_CAPABILITIES environment variable is checked to determine if this modification should be made.
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func NewGraphicsModifier(logger *logrus.Logger, cfg *config.Config, ociSpec oci.Spec) (oci.SpecModifier, error) {
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rawSpec, err := ociSpec.Load()
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if err != nil {
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return nil, fmt.Errorf("failed to load OCI spec: %v", err)
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}
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image, err := image.NewCUDAImageFromSpec(rawSpec)
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if err != nil {
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return nil, err
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}
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if required, reason := requiresGraphicsModifier(image); !required {
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logger.Infof("No graphics modifier required: %v", reason)
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return nil, nil
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}
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d, err := discover.NewGraphicsDiscoverer(
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logger,
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image.DevicesFromEnvvars(visibleDevicesEnvvar),
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cfg.NVIDIAContainerCLIConfig.Root,
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cfg.NVIDIACTKConfig.Path,
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)
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if err != nil {
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return nil, fmt.Errorf("failed to construct discoverer: %v", err)
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}
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return NewModifierFromDiscoverer(logger, d)
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}
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// requiresGraphicsModifier determines whether a graphics modifier is required.
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func requiresGraphicsModifier(cudaImage image.CUDA) (bool, string) {
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if devices := cudaImage.DevicesFromEnvvars(visibleDevicesEnvvar); len(devices.List()) == 0 {
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return false, "no devices requested"
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}
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if !cudaImage.GetDriverCapabilities().Any(image.DriverCapabilityGraphics, image.DriverCapabilityDisplay) {
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return false, "no required capabilities requested"
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}
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return true, ""
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}
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