mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +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>
123 lines
3.0 KiB
Go
123 lines
3.0 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/sirupsen/logrus"
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)
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// NewLDCacheUpdateHook creates a discoverer that updates the ldcache for the specified mounts. A logger can also be specified
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func NewLDCacheUpdateHook(logger *logrus.Logger, mounts Discover, nvidiaCTKPath string) (Discover, error) {
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d := ldconfig{
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logger: logger,
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nvidiaCTKPath: nvidiaCTKPath,
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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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type ldconfig struct {
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None
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logger *logrus.Logger
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nvidiaCTKPath string
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mountsFrom Discover
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}
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// Hooks checks the required mounts for libraries and returns a hook to update the LDcache for the discovered paths.
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func (d ldconfig) Hooks() ([]Hook, 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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h := CreateLDCacheUpdateHook(
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d.nvidiaCTKPath,
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getLibraryPaths(mounts),
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)
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return []Hook{h}, nil
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}
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// CreateLDCacheUpdateHook locates the NVIDIA Container Toolkit CLI and creates a hook for updating the LD Cache
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func CreateLDCacheUpdateHook(executable string, libraries []string) Hook {
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var args []string
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for _, f := range uniqueFolders(libraries) {
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args = append(args, "--folder", f)
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}
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hook := CreateNvidiaCTKHook(
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executable,
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"update-ldcache",
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args...,
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)
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return hook
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}
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// getLibraryPaths extracts the library dirs from the specified mounts
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func getLibraryPaths(mounts []Mount) []string {
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var paths []string
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for _, m := range mounts {
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if !isLibName(m.Path) {
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continue
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}
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paths = append(paths, m.Path)
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}
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return paths
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}
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// isLibName checks if the specified filename is a library (i.e. ends in `.so*`)
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func isLibName(filename string) bool {
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base := filepath.Base(filename)
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isLib, err := filepath.Match("lib?*.so*", base)
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if !isLib || err != nil {
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return false
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}
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parts := strings.Split(base, ".so")
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if len(parts) == 1 {
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return true
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}
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return parts[len(parts)-1] == "" || strings.HasPrefix(parts[len(parts)-1], ".")
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}
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// uniqueFolders returns the unique set of folders for the specified files
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func uniqueFolders(libraries []string) []string {
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var paths []string
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checked := make(map[string]bool)
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for _, l := range libraries {
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dir := filepath.Dir(l)
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if dir == "" {
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continue
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}
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if checked[dir] {
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continue
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}
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checked[dir] = true
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paths = append(paths, dir)
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}
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return paths
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}
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