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Use pledge(2) on OpenBSD #1215

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Use pledge(2) on OpenBSD #1215

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15 changes: 15 additions & 0 deletions cmd/yggdrasil/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -312,6 +312,21 @@ func main() {
}
}

// Promise final modes of operation. At this point, if at all:
// - raw socket is created/open
// - admin socket is created/open
// - privileges are dropped to non-root user
//
// Peers, InterfacePeers, Listen can be UNIX sockets;
// Go's net.Listen.Close() deletes files on shutdown.
promises := []string{"stdio", "cpath", "inet", "unix", "dns"}
if len(cfg.MulticastInterfaces) > 0 {
promises = append(promises, "mcast")
}
if err := protect.Pledge(strings.Join(promises, " ")); err != nil {
panic(fmt.Sprintf("pledge: %v: %v", promises, err))
}

// Block until we are told to shut down.
<-ctx.Done()

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