mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-26 05:49:58 +00:00
35df24d63a
This change adds an --nvidia-ctk-path to the nvidia-ctk cdi generate command. This ensures that the executable path for the generated hooks can be specified consistently. Since the NVIDIA Container Runtime already allows for the executable path to be specified in the config the utility code to update the LDCache and create other nvidia-ctk hooks are also updated. Signed-off-by: Evan Lezar <elezar@nvidia.com>
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
/**
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# Copyright (c) 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 generate
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import (
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"path/filepath"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/container-orchestrated-devices/container-device-interface/specs-go"
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"github.com/sirupsen/logrus"
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)
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type deviceFolderPermissions struct {
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logger *logrus.Logger
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root string
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nvidiaCTKPath string
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folders []string
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}
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var _ discover.Discover = (*deviceFolderPermissions)(nil)
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// NewDeviceFolderPermissionHookDiscoverer creates a discoverer that can be used to update the permissions for the parent folders of nested device nodes from the specified set of device specs.
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// This works around an issue with rootless podman when using crun as a low-level runtime.
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// See https://github.com/containers/crun/issues/1047
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// The nested devices that are applicable to the NVIDIA GPU devices are:
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// - DRM devices at /dev/dri/*
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// - NVIDIA Caps devices at /dev/nvidia-caps/*
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func NewDeviceFolderPermissionHookDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath string, deviceSpecs []specs.Device) (discover.Discover, error) {
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var folders []string
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seen := make(map[string]bool)
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for _, device := range deviceSpecs {
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for _, dn := range device.ContainerEdits.DeviceNodes {
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df := filepath.Dir(dn.Path)
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if seen[df] {
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continue
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}
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// We only consider the special case paths
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if df != "/dev/dri" && df != "/dev/nvidia-caps" {
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continue
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}
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folders = append(folders, df)
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seen[df] = true
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}
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if len(folders) == 2 {
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break
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}
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}
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if len(folders) == 0 {
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return discover.None{}, nil
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}
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d := &deviceFolderPermissions{
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logger: logger,
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root: root,
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nvidiaCTKPath: nvidiaCTKPath,
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folders: folders,
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}
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return d, nil
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}
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// Devices are empty for this discoverer
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func (d *deviceFolderPermissions) Devices() ([]discover.Device, error) {
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return nil, nil
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}
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// Hooks returns a set of hooks that sets the file mode to 755 of parent folders for nested device nodes.
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func (d *deviceFolderPermissions) Hooks() ([]discover.Hook, error) {
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if len(d.folders) == 0 {
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return nil, nil
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}
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args := []string{"--mode", "755"}
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for _, folder := range d.folders {
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args = append(args, "--path", folder)
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}
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hook := discover.CreateNvidiaCTKHook(
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d.nvidiaCTKPath,
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"chmod",
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args...,
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)
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return []discover.Hook{hook}, nil
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}
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// Mounts are empty for this discoverer
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func (d *deviceFolderPermissions) Mounts() ([]discover.Mount, error) {
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return nil, nil
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}
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