25 lines
523 B
Go
25 lines
523 B
Go
//go:build unix
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package runfile
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import (
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"errors"
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"os"
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"syscall"
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)
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// processAlive probes existence with signal 0: kill(pid, 0) returns nil if the
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// process exists and we can signal it, EPERM if it exists but is owned by
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// another user, and ESRCH (or any other error from FindProcess) if it is gone.
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func processAlive(pid int) bool {
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proc, err := os.FindProcess(pid)
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if err != nil {
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return false
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}
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err = proc.Signal(syscall.Signal(0))
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if err == nil {
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return true
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}
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return errors.Is(err, syscall.EPERM)
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}
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