mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
fd135f1a8b
This adds a Relative function to the Locator interface and uses this to determine the host and container paths for located files (and devices). This ensures that the root (e.g. the nvidia driver root) is stripped from the container path. Signed-off-by: Evan Lezar <elezar@nvidia.com>
100 lines
2.3 KiB
Go
100 lines
2.3 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 discover
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import (
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"fmt"
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"sync"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
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"github.com/sirupsen/logrus"
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)
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// mounts is a generic discoverer for Mounts. It is customized by specifying the
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// required entities as a list and a Locator that is used to find the target mounts
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// based on the entry in the list.
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type mounts struct {
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None
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logger *logrus.Logger
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lookup lookup.Locator
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required []string
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sync.Mutex
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cache []Mount
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}
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var _ Discover = (*mounts)(nil)
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func (d *mounts) Mounts() ([]Mount, error) {
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if d.lookup == nil {
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return nil, fmt.Errorf("no lookup defined")
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}
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if d.cache != nil {
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d.logger.Debugf("returning cached mounts")
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return d.cache, nil
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}
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d.Lock()
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defer d.Unlock()
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uniqueMounts := make(map[string]Mount)
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for _, candidate := range d.required {
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d.logger.Debugf("Locating %v", candidate)
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located, err := d.lookup.Locate(candidate)
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if err != nil {
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d.logger.Warnf("Could not locate %v: %v", candidate, err)
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continue
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}
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if len(located) == 0 {
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d.logger.Warnf("Missing %v", candidate)
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continue
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}
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d.logger.Debugf("Located %v as %v", candidate, located)
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for _, p := range located {
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if _, ok := uniqueMounts[p]; ok {
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d.logger.Debugf("Skipping duplicate mount %v", p)
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continue
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}
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r, err := d.lookup.Relative(p)
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if err != nil {
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d.logger.Warnf("Failed to get relative path of %v: %v", p, err)
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continue
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}
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if r == "" {
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r = p
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}
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d.logger.Infof("Selecting %v as %v", p, r)
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uniqueMounts[p] = Mount{
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HostPath: p,
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Path: r,
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}
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}
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}
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var mounts []Mount
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for _, m := range uniqueMounts {
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mounts = append(mounts, m)
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}
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d.cache = mounts
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return d.cache, nil
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}
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