mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-29 16:02:10 +00:00
119 lines
3.5 KiB
Go
119 lines
3.5 KiB
Go
package main
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import (
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"log"
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"os"
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"path"
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"reflect"
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"github.com/BurntSushi/toml"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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)
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const (
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configPath = "/etc/nvidia-container-runtime/config.toml"
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driverPath = "/run/nvidia/driver"
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)
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var defaultPaths = [...]string{
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path.Join(driverPath, configPath),
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configPath,
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}
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// CLIConfig : options for nvidia-container-cli.
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type CLIConfig struct {
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Root *string `toml:"root"`
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Path *string `toml:"path"`
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Environment []string `toml:"environment"`
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Debug *string `toml:"debug"`
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Ldcache *string `toml:"ldcache"`
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LoadKmods bool `toml:"load-kmods"`
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NoPivot bool `toml:"no-pivot"`
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NoCgroups bool `toml:"no-cgroups"`
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User *string `toml:"user"`
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Ldconfig *string `toml:"ldconfig"`
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}
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// HookConfig : options for the nvidia-container-toolkit.
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type HookConfig struct {
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DisableRequire bool `toml:"disable-require"`
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SwarmResource *string `toml:"swarm-resource"`
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AcceptEnvvarUnprivileged bool `toml:"accept-nvidia-visible-devices-envvar-when-unprivileged"`
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AcceptDeviceListAsVolumeMounts bool `toml:"accept-nvidia-visible-devices-as-volume-mounts"`
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SupportedDriverCapabilities DriverCapabilities `toml:"supported-driver-capabilities"`
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NvidiaContainerCLI CLIConfig `toml:"nvidia-container-cli"`
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NVIDIAContainerRuntime config.RuntimeConfig `toml:"nvidia-container-runtime"`
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}
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func getDefaultHookConfig() HookConfig {
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return HookConfig{
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DisableRequire: false,
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SwarmResource: nil,
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AcceptEnvvarUnprivileged: true,
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AcceptDeviceListAsVolumeMounts: false,
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SupportedDriverCapabilities: allDriverCapabilities,
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NvidiaContainerCLI: CLIConfig{
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Root: nil,
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Path: nil,
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Environment: []string{},
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Debug: nil,
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Ldcache: nil,
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LoadKmods: true,
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NoPivot: false,
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NoCgroups: false,
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User: nil,
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Ldconfig: nil,
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},
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NVIDIAContainerRuntime: *config.GetDefaultRuntimeConfig(),
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}
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}
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func getHookConfig() (config HookConfig) {
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var err error
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if len(*configflag) > 0 {
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config = getDefaultHookConfig()
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_, err = toml.DecodeFile(*configflag, &config)
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if err != nil {
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log.Panicln("couldn't open configuration file:", err)
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}
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} else {
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for _, p := range defaultPaths {
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config = getDefaultHookConfig()
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_, err = toml.DecodeFile(p, &config)
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if err == nil {
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break
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} else if !os.IsNotExist(err) {
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log.Panicln("couldn't open default configuration file:", err)
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}
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}
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}
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if config.SupportedDriverCapabilities == all {
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config.SupportedDriverCapabilities = allDriverCapabilities
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}
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// We ensure that the supported-driver-capabilites option is a subset of allDriverCapabilities
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if intersection := allDriverCapabilities.Intersection(config.SupportedDriverCapabilities); intersection != config.SupportedDriverCapabilities {
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configName := config.getConfigOption("SupportedDriverCapabilities")
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log.Panicf("Invalid value for config option '%v'; %v (supported: %v)\n", configName, config.SupportedDriverCapabilities, allDriverCapabilities)
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}
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return config
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}
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// getConfigOption returns the toml config option associated with the
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// specified struct field.
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func (c HookConfig) getConfigOption(fieldName string) string {
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t := reflect.TypeOf(c)
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f, ok := t.FieldByName(fieldName)
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if !ok {
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return fieldName
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}
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v, ok := f.Tag.Lookup("toml")
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if !ok {
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return fieldName
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}
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return v
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}
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