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Use pledge(2) on OpenBSD (#1215)

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Straight forward thanks to all privileged operations being done early
enough during startup.
This commit is contained in:
Klemens Nanni 2024-12-22 14:04:26 +03:00 committed by GitHub
parent 213f72b840
commit 782c0250d7
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15
cmd/yggdrasil/main.go
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@ -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. // Block until we are told to shut down.
<-ctx.Done() <-ctx.Done()