mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2025-04-04 20:52:41 +00:00
d9c52ecd4e
This will be handled by the runtime itself. Signed-off-by: Jean-Francois Roy <jeroy@nvidia.com>
90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
/**
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# Copyright (c) 2024, 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 main
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import (
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"bufio"
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"errors"
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"io/fs"
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"log"
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"os"
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"strings"
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"golang.org/x/sys/unix"
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)
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func main() {
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program, err := os.Executable()
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if err != nil {
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log.Fatalf("failed to get executable: %v", err)
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}
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argv := makeArgv(program)
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envv := makeEnvv(program)
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if err := unix.Exec(program+".real", argv, envv); err != nil {
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log.Fatalf("failed to exec %s: %v", program+".real", err)
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}
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}
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func makeArgv(program string) []string {
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argv := []string{os.Args[0] + ".real"}
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f, err := os.Open(program + ".argv")
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if err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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log.Printf("failed to open argv file: %v", err)
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}
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return append(argv, os.Args[1:]...)
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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argv = append(argv, scanner.Text())
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("failed to read argv file: %v", err)
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}
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return append(argv, os.Args[1:]...)
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}
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func makeEnvv(program string) []string {
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f, err := os.Open(program + ".envv")
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if err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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log.Printf("failed to open env file: %v", err)
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}
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return os.Environ()
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}
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defer f.Close()
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var env []string
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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kv := strings.SplitN(scanner.Text(), "=", 2)
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if strings.HasPrefix(kv[0], "<") {
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kv[0] = kv[0][1:]
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kv[1] = kv[1] + ":" + os.Getenv(kv[0])
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} else if strings.HasPrefix(kv[0], ">") {
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kv[0] = kv[0][1:]
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kv[1] = os.Getenv(kv[0]) + ":" + kv[1]
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}
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env = append(env, kv[0]+"="+kv[1])
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}
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if err := scanner.Err(); err != nil {
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log.Fatalf("failed to read argv file: %v", err)
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}
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return append(env, os.Environ()...)
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}
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