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https://github.com/NVIDIA/nvidia-container-toolkit
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beff276a52
This change adds a charDevices discoverer and using this for CSV, GDS, and MOFED discovery. Internally the discoverer is a "mounts" discoverer with a charDevice locator. Signed-off-by: Evan Lezar <elezar@nvidia.com>
65 lines
2.1 KiB
Go
65 lines
2.1 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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"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
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"github.com/sirupsen/logrus"
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)
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// charDevices is a discover for a list of character devices
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type charDevices mounts
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var _ Discover = (*charDevices)(nil)
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// NewCharDeviceDiscoverer creates a discoverer which locates the specified set of device nodes.
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func NewCharDeviceDiscoverer(logger *logrus.Logger, devices []string, root string) Discover {
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locator := lookup.NewCharDeviceLocator(logger, root)
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return NewDeviceDiscoverer(logger, locator, devices)
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}
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// NewDeviceDiscoverer creates a discoverer which locates the specified set of device nodes using the specified locator.
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func NewDeviceDiscoverer(logger *logrus.Logger, locator lookup.Locator, devices []string) Discover {
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return &charDevices{
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logger: logger,
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lookup: locator,
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required: devices,
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}
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}
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// Mounts returns the discovered mounts for the charDevices.
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// Since this explicitly specifies a device list, the mounts are nil.
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func (d *charDevices) Mounts() ([]Mount, error) {
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return nil, nil
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}
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// Devices returns the discovered devices for the charDevices.
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// Here the device nodes are first discovered as mounts and these are converted to devices.
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func (d *charDevices) Devices() ([]Device, error) {
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devicesAsMounts, err := (*mounts)(d).Mounts()
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if err != nil {
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return nil, err
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}
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var devices []Device
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for _, mount := range devicesAsMounts {
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devices = append(devices, Device(mount))
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}
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return devices, nil
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}
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