31 lines
741 B
Go
31 lines
741 B
Go
// +build !windows
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package proxy
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import (
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"fmt"
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"os"
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"syscall"
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)
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// findProcess for non-Windows. Note that this very likely doesn't
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// work for all non-Windows platforms Go supports and we should expand
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// support as we experience it.
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func findProcess(pid int) (*os.Process, error) {
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// FindProcess never fails on unix-like systems.
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p, err := os.FindProcess(pid)
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if err != nil {
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return nil, err
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}
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// On Unix-like systems, we can verify a process is alive by sending
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// a 0 signal. This will do nothing to the process but will still
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// return errors if the process is gone.
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err = p.Signal(syscall.Signal(0))
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if err == nil {
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return p, nil
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}
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return nil, fmt.Errorf("process %d is dead or running as another user", pid)
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}
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