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The Unix implementation of doExec propagates error codes by virtue of the fact that it does an execve; the replacement binary will return the exit code. On non-Unix, we need to simulate these semantics by checking for an ExitError and, when present, passing that value on to os.Exit. We also add error handling to the doExec call for the benefit of handling any errors where doExec fails before being able to execute the desired binary. Updates https://github.com/tailscale/corp/issues/29940 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
31 lines
535 B
Go
31 lines
535 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !unix
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package main
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import (
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"errors"
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"os"
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"os/exec"
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)
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func doExec(cmd string, args []string, env []string) error {
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c := exec.Command(cmd, args[1:]...)
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c.Env = env
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c.Stdin = os.Stdin
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c.Stdout = os.Stdout
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c.Stderr = os.Stderr
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err := c.Run()
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// Propagate ExitErrors within this func to give us similar semantics to
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// the Unix variant.
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var ee *exec.ExitError
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if errors.As(err, &ee) {
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os.Exit(ee.ExitCode())
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}
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return err
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}
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