mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2025-03-10 14:22:11 +00:00
76040ff2ad
This change adds an nvidia-cdi-hook enable-cuda-compat hook that checks the container for cuda compat libs and updates /etc/ld.so.conf.d to include their parent folder if their driver major version is sufficient. This allows CUDA Forward Compatibility to be used when this is not available through the libnvidia-container. Signed-off-by: Evan Lezar <elezar@nvidia.com>
77 lines
2.0 KiB
Go
77 lines
2.0 KiB
Go
/**
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# Copyright (c) 2025, 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 cudacompat
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import (
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"os"
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"path/filepath"
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"github.com/moby/sys/symlink"
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)
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// A containerRoot represents the root filesystem of a container.
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type containerRoot string
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// hasPath checks whether the specified path exists in the root.
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func (r containerRoot) hasPath(path string) bool {
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resolved, err := r.resolve(path)
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if err != nil {
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return false
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}
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if _, err := os.Stat(resolved); err != nil && os.IsNotExist(err) {
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return false
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}
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return true
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}
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// globFiles matches the specified pattern in the root.
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// The files that match must be regular files.
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func (r containerRoot) globFiles(pattern string) ([]string, error) {
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patternPath, err := r.resolve(pattern)
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if err != nil {
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return nil, err
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}
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matches, err := filepath.Glob(patternPath)
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if err != nil {
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return nil, err
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}
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var files []string
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for _, match := range matches {
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info, err := os.Lstat(match)
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if err != nil {
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return nil, err
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}
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// Ignore symlinks.
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if info.Mode()&os.ModeSymlink != 0 {
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continue
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}
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// Ignore directories.
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if info.IsDir() {
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continue
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}
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files = append(files, match)
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}
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return files, nil
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}
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// resolve returns the absolute path including root path.
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// Symlinks are resolved, but are guaranteed to resolve in the root.
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func (r containerRoot) resolve(path string) (string, error) {
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absolute := filepath.Clean(filepath.Join(string(r), path))
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return symlink.FollowSymlinkInScope(absolute, string(r))
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}
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