| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "os" |
| 7 | "os/exec" |
| 8 | "strconv" |
| 9 | "syscall" |
| 10 | "time" |
| 11 | ) |
| 12 | |
| 13 | func main() { |
| 14 | if len(os.Args) < 3 { |
| 15 | fmt.Fprintf(os.Stderr, |
| 16 | "Usage: %s <timeout-in-sec> <command ...>\n", os.Args[0]) |
| 17 | os.Exit(1) |
| 18 | } |
| 19 | timeout, err := strconv.ParseUint(os.Args[1], 10, 32) |
| 20 | if err != nil { |
| 21 | fmt.Fprintf(os.Stderr, "Error: %v\n", err) |
| 22 | os.Exit(1) |
| 23 | } |
| 24 | ctx, cancel := context.WithTimeout(context.Background(), time.Duration(timeout)*time.Second) |
| 25 | defer cancel() |
| 26 | |
| 27 | cmd := exec.CommandContext(ctx, os.Args[2], os.Args[3:]...) |
| 28 | cmd.Stdin = os.Stdin |
| 29 | cmd.Stdout = os.Stdout |
| 30 | cmd.Stderr = os.Stderr |
| 31 | err = cmd.Start() |
| 32 | if err != nil { |
| 33 | fmt.Fprintf(os.Stderr, "Error: %v\n", err) |
| 34 | } |
| 35 | err = cmd.Wait() |
| 36 | |
| 37 | if err != nil { |
| 38 | if ctx.Err() != nil { |
| 39 | os.Exit(124) |
| 40 | } else { |
| 41 | exitErr, ok := err.(*exec.ExitError) |
| 42 | if !ok { |
| 43 | fmt.Fprintf(os.Stderr, "Error: %v\n", err) |
| 44 | os.Exit(255) |
| 45 | } |
| 46 | waits, ok := exitErr.Sys().(syscall.WaitStatus) |
| 47 | if !ok { |
| 48 | fmt.Fprintf(os.Stderr, "Error: %v\n", err) |
| 49 | os.Exit(255) |
| 50 | } |
| 51 | os.Exit(waits.ExitStatus()) |
| 52 | } |
| 53 | } else { |
| 54 | os.Exit(0) |
| 55 | } |
| 56 | } |