| // Copyright 2020 The Monogon Project Authors. |
| // |
| // SPDX-License-Identifier: Apache-2.0 |
| // |
| // 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 main |
| |
| import ( |
| "log" |
| "os" |
| "os/exec" |
| ) |
| |
| func main() { |
| if len(os.Args) < 3 { |
| log.Fatalf("Usage: %s output_file program <args...>", os.Args[0]) |
| } |
| |
| f, err := os.Create(os.Args[1]) |
| if err != nil { |
| log.Fatalf("Create(%q): %v", os.Args[1], err) |
| } |
| defer f.Close() |
| |
| args := os.Args[3:] |
| cmd := exec.Command(os.Args[2], args...) |
| cmd.Stderr = os.Stderr |
| cmd.Stdout = f |
| |
| err = cmd.Run() |
| if err == nil { |
| return |
| } |
| |
| if e, ok := err.(*exec.ExitError); ok { |
| os.Exit(e.ExitCode()) |
| } |
| |
| log.Fatalf("Could not start command: %v", err) |
| } |