mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
/*
|
|
# Copyright (c) 2021, 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 oci
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
|
|
)
|
|
|
|
// pathRuntime wraps the path that a binary and defines the semanitcs for how to exec into it.
|
|
// This can be used to wrap an OCI-compliant low-level runtime binary, allowing it to be used through the
|
|
// Runtime internface.
|
|
type pathRuntime struct {
|
|
logger logger.Interface
|
|
path string
|
|
execRuntime Runtime
|
|
}
|
|
|
|
var _ Runtime = (*pathRuntime)(nil)
|
|
|
|
// NewRuntimeForPath creates a Runtime for the specified logger and path
|
|
func NewRuntimeForPath(logger logger.Interface, path string) (Runtime, error) {
|
|
info, err := os.Stat(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid path '%v': %v", path, err)
|
|
}
|
|
if info.IsDir() || info.Mode()&0111 == 0 {
|
|
return nil, fmt.Errorf("specified path '%v' is not an executable file", path)
|
|
}
|
|
|
|
shim := pathRuntime{
|
|
logger: logger,
|
|
path: path,
|
|
execRuntime: syscallExec{},
|
|
}
|
|
|
|
return &shim, nil
|
|
}
|
|
|
|
// Exec exces into the binary at the path from the pathRuntime struct, passing it the supplied arguments
|
|
// after ensuring that the first argument is the path of the target binary.
|
|
func (s pathRuntime) Exec(args []string) error {
|
|
runtimeArgs := []string{s.path}
|
|
if len(args) > 1 {
|
|
runtimeArgs = append(runtimeArgs, args[1:]...)
|
|
}
|
|
|
|
return s.execRuntime.Exec(runtimeArgs)
|
|
}
|