mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-25 13:35:00 +00:00
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
/*
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# Copyright (c) 2021, 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 lookup
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/ldcache"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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)
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type ldcacheLocator struct {
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logger logger.Interface
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cache ldcache.LDCache
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}
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var _ Locator = (*ldcacheLocator)(nil)
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// NewLibraryLocator creates a library locator using the specified options.
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func NewLibraryLocator(opts ...Option) Locator {
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b := newBuilder(opts...)
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// If search paths are already specified, we return a locator for the specified search paths.
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if len(b.searchPaths) > 0 {
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return NewSymlinkLocator(
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WithLogger(b.logger),
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WithSearchPaths(b.searchPaths...),
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WithRoot("/"),
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)
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}
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opts = append(opts,
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WithSearchPaths([]string{
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"/",
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"/usr/lib64",
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"/usr/lib/x86_64-linux-gnu",
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"/usr/lib/aarch64-linux-gnu",
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"/usr/lib/x86_64-linux-gnu/nvidia/current",
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"/usr/lib/aarch64-linux-gnu/nvidia/current",
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"/lib64",
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"/lib/x86_64-linux-gnu",
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"/lib/aarch64-linux-gnu",
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"/lib/x86_64-linux-gnu/nvidia/current",
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"/lib/aarch64-linux-gnu/nvidia/current",
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}...),
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)
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// We construct a symlink locator for expected library locations.
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symlinkLocator := NewSymlinkLocator(opts...)
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l := First(
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symlinkLocator,
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newLdcacheLocator(opts...),
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)
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return l
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}
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func newLdcacheLocator(opts ...Option) Locator {
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b := newBuilder(opts...)
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cache, err := ldcache.New(b.logger, b.root)
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if err != nil {
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// If we failed to open the LDCache, we default to a symlink locator.
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b.logger.Warningf("Failed to load ldcache: %v", err)
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return nil
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}
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return &ldcacheLocator{
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logger: b.logger,
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cache: cache,
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}
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}
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// Locate finds the specified libraryname.
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// If the input is a library name, the ldcache is searched otherwise the
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// provided path is resolved as a symlink.
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func (l ldcacheLocator) Locate(libname string) ([]string, error) {
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paths32, paths64 := l.cache.Lookup(libname)
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if len(paths32) > 0 {
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l.logger.Warningf("Ignoring 32-bit libraries for %v: %v", libname, paths32)
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}
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if len(paths64) == 0 {
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return nil, fmt.Errorf("64-bit library %v: %w", libname, ErrNotFound)
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}
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return paths64, nil
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}
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