nvidia-container-toolkit/internal/config/cli.go

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/**
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
**/
package config
import (
"os"
"strings"
)
// ContainerCLIConfig stores the options for the nvidia-container-cli
type ContainerCLIConfig struct {
Root string `toml:"root"`
Path string `toml:"path"`
Environment []string `toml:"environment"`
Debug string `toml:"debug"`
Ldcache string `toml:"ldcache"`
LoadKmods bool `toml:"load-kmods"`
// NoPivot disables the pivot root operation in the NVIDIA Container CLI.
// This is not exposed in the config if not set.
NoPivot bool `toml:"no-pivot,omitempty"`
NoCgroups bool `toml:"no-cgroups"`
User string `toml:"user"`
Ldconfig string `toml:"ldconfig"`
}
// NormalizeLDConfigPath returns the resolved path of the configured LDConfig binary.
// This is only done for host LDConfigs and is required to handle systems where
// /sbin/ldconfig is a wrapper around /sbin/ldconfig.real.
func (c *ContainerCLIConfig) NormalizeLDConfigPath() string {
return NormalizeLDConfigPath(c.Ldconfig)
}
// NormalizeLDConfigPath returns the resolved path of the configured LDConfig binary.
// This is only done for host LDConfigs and is required to handle systems where
// /sbin/ldconfig is a wrapper around /sbin/ldconfig.real.
func NormalizeLDConfigPath(path string) string {
if !strings.HasPrefix(path, "@") {
return path
}
trimmedPath := strings.TrimSuffix(strings.TrimPrefix(path, "@"), ".real")
// If the .real path exists, we return that.
if _, err := os.Stat(trimmedPath + ".real"); err == nil {
return "@" + trimmedPath + ".real"
}
// If the .real path does not exists (or cannot be read) we return the non-.real path.
return "@" + trimmedPath
}