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36 lines
645 B
36 lines
645 B
// +build !windows
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package bind
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import (
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"os"
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"syscall"
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)
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const systemdMinFd = 3
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var systemdNumFds int
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// Unfortunately this can't be a normal init function, because their execution
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// order is undefined, and we need to run before the init() in bind.go.
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func systemdInit() {
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pid, err := envInt("LISTEN_PID")
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if err != nil || pid != os.Getpid() {
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return
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}
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systemdNumFds, err = envInt("LISTEN_FDS")
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if err != nil {
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systemdNumFds = 0
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return
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}
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// Prevent fds from leaking to our children
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for i := 0; i < systemdNumFds; i++ {
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syscall.CloseOnExec(systemdMinFd + i)
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}
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}
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func usingSystemd() bool {
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return systemdNumFds > 0
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}
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