| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | //go:build !windows |
| 4 | |
| 5 | package ndexec |
| 6 | |
| 7 | import ( |
| 8 | "errors" |
| 9 | "os" |
| 10 | "os/exec" |
| 11 | "syscall" |
| 12 | "time" |
| 13 | ) |
| 14 | |
| 15 | func configureCommandCancellation(cmd *exec.Cmd) { |
| 16 | if cmd == nil { |
| 17 | return |
| 18 | } |
| 19 | |
| 20 | if cmd.SysProcAttr == nil { |
| 21 | cmd.SysProcAttr = &syscall.SysProcAttr{} |
| 22 | } |
| 23 | cmd.SysProcAttr.Setpgid = true |
| 24 | cmd.WaitDelay = 250 * time.Millisecond |
| 25 | cmd.Cancel = func() error { |
| 26 | if cmd.Process == nil { |
| 27 | return nil |
| 28 | } |
| 29 | if err := syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL); err != nil && !errors.Is(err, syscall.ESRCH) { |
| 30 | return resolveDirectKillFallback(cmd.Process.Kill()) |
| 31 | } |
| 32 | return nil |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | func resolveDirectKillFallback(killErr error) error { |
| 37 | if killErr == nil { |
| 38 | return nil |
| 39 | } |
| 40 | if errors.Is(killErr, os.ErrProcessDone) { |
| 41 | return os.ErrProcessDone |
| 42 | } |
| 43 | return killErr |
| 44 | } |