mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
d52dbeaa7a
This changes splits the functionality in the internal system package into two packages: one for dealing with devices and one for dealing with kernel modules. This removes ambiguity around the meaning of driver / device roots in each case. In each case, a root can be specified where device nodes are created or kernel modules loaded. Signed-off-by: Evan Lezar <elezar@nvidia.com>
94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
/**
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# Copyright (c) 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 nvmodules
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import (
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"fmt"
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"strings"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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)
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// Interface provides a set of utilities for interacting with NVIDIA modules on the system.
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type Interface struct {
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logger logger.Interface
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dryRun bool
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root string
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cmder
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}
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// New constructs a new Interface struct with the specified options.
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func New(opts ...Option) *Interface {
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m := &Interface{}
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for _, opt := range opts {
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opt(m)
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}
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if m.logger == nil {
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m.logger = logger.New()
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}
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if m.root == "" {
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m.root = "/"
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}
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if m.dryRun {
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m.cmder = &cmderLogger{m.logger}
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} else {
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m.cmder = &cmderExec{}
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}
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return m
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}
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// LoadAll loads all the NVIDIA kernel modules.
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func (m *Interface) LoadAll() error {
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modules := []string{"nvidia", "nvidia-uvm", "nvidia-modeset"}
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for _, module := range modules {
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if err := m.Load(module); err != nil {
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return fmt.Errorf("failed to load module %s: %w", module, err)
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}
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}
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return nil
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}
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var errInvalidModule = fmt.Errorf("invalid module")
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// Load loads the specified NVIDIA kernel module.
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// If the root is specified we first chroot into this root.
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func (m *Interface) Load(module string) error {
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if !strings.HasPrefix(module, "nvidia") {
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return errInvalidModule
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}
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var args []string
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if m.root != "/" {
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args = append(args, "chroot", m.root)
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}
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args = append(args, "/sbin/modprobe", module)
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m.logger.Debugf("Loading kernel module %s: %v", module, args)
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err := m.Run(args[0], args[1:]...)
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if err != nil {
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m.logger.Debugf("Failed to load kernel module %s: %v", module, err)
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return err
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}
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return nil
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}
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