mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-23 00:38:26 +00:00
126 lines
3.8 KiB
Go
126 lines
3.8 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 discover
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import (
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"fmt"
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"path/filepath"
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"strings"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
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"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
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"github.com/sirupsen/logrus"
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)
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type symlinks struct {
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None
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logger *logrus.Logger
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lookup lookup.Locator
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nvidiaCTKExecutablePath string
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csvFiles []string
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mountsFrom Discover
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}
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// NewCreateSymlinksHook creates a discoverer for a hook that creates required symlinks in the container
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func NewCreateSymlinksHook(logger *logrus.Logger, csvFiles []string, mounts Discover, cfg *Config) (Discover, error) {
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d := symlinks{
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logger: logger,
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lookup: lookup.NewExecutableLocator(logger, cfg.Root),
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nvidiaCTKExecutablePath: cfg.NVIDIAContainerToolkitCLIExecutablePath,
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csvFiles: csvFiles,
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mountsFrom: mounts,
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}
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return &d, nil
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}
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// Hooks returns a hook to create the symlinks from the required CSV files
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func (d symlinks) Hooks() ([]Hook, error) {
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hookPath := nvidiaCTKDefaultFilePath
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targets, err := d.lookup.Locate(d.nvidiaCTKExecutablePath)
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if err != nil {
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d.logger.Warnf("Failed to locate %v: %v", d.nvidiaCTKExecutablePath, err)
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} else if len(targets) == 0 {
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d.logger.Warnf("%v not found", d.nvidiaCTKExecutablePath)
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} else {
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d.logger.Debugf("Found %v candidates: %v", d.nvidiaCTKExecutablePath, targets)
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hookPath = targets[0]
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}
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d.logger.Debugf("Using NVIDIA Container Toolkit CLI path %v", hookPath)
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args := []string{hookPath, "hook", "create-symlinks"}
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for _, f := range d.csvFiles {
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args = append(args, "--csv-filename", f)
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}
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links, err := d.getSpecificLinkArgs()
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if err != nil {
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return nil, fmt.Errorf("failed to determine specific links: %v", err)
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}
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args = append(args, links...)
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h := Hook{
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Lifecycle: cdi.CreateContainerHook,
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Path: hookPath,
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Args: args,
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}
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return []Hook{h}, nil
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}
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// getSpecificLinkArgs returns the required specic links that need to be created
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func (d symlinks) getSpecificLinkArgs() ([]string, error) {
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mounts, err := d.mountsFrom.Mounts()
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if err != nil {
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return nil, fmt.Errorf("failed to discover mounts for ldcache update: %v", err)
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}
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linkProcessed := make(map[string]bool)
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var links []string
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for _, m := range mounts {
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var target string
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var link string
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lib := filepath.Base(m.Path)
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if strings.HasPrefix(lib, "libcuda.so") {
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// XXX Many applications wrongly assume that libcuda.so exists (e.g. with dlopen).
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target = "libcuda.so.1"
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link = "libcuda.so"
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} else if strings.HasPrefix(lib, "libGLX_nvidia.so") {
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// XXX GLVND requires this symlink for indirect GLX support.
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target = lib
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link = "libGLX_indirect.so.0"
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} else if strings.HasPrefix(lib, "libnvidia-opticalflow.so") {
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// XXX Fix missing symlink for libnvidia-opticalflow.so.
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target = "libnvidia-opticalflow.so.1"
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link = "libnvidia-opticalflow.so"
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} else {
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continue
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}
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if linkProcessed[link] {
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continue
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}
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linkPath := filepath.Join(filepath.Dir(m.Path), link)
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links = append(links, "--link", fmt.Sprintf("%v::%v", target, linkPath))
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linkProcessed[link] = true
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}
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return links, nil
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}
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