From 87f2e38017a0965d285a1ab10f64b6afe1277dc3 Mon Sep 17 00:00:00 2001
From: Steven Allen <steven@stebalien.com>
Date: Tue, 24 Sep 2019 20:30:37 -0700
Subject: [PATCH] systemd: add notify support

That way, we can reliably know when the daemon is ready.
---
 cmd/ipfs/daemon.go        |  2 ++
 cmd/ipfs/daemon_linux.go  | 15 +++++++++++++++
 cmd/ipfs/daemon_other.go  |  7 +++++++
 misc/systemd/ipfs.service |  1 +
 4 files changed, 25 insertions(+)
 create mode 100644 cmd/ipfs/daemon_linux.go
 create mode 100644 cmd/ipfs/daemon_other.go

diff --git a/cmd/ipfs/daemon.go b/cmd/ipfs/daemon.go
index 7b0197bbc..14220060b 100644
--- a/cmd/ipfs/daemon.go
+++ b/cmd/ipfs/daemon.go
@@ -411,10 +411,12 @@ func daemonFunc(req *cmds.Request, re cmds.ResponseEmitter, env cmds.Environment
 
 	// The daemon is *finally* ready.
 	fmt.Printf("Daemon is ready\n")
+	notifyReady()
 
 	// Give the user some immediate feedback when they hit C-c
 	go func() {
 		<-req.Context.Done()
+		notifyStopping()
 		fmt.Println("Received interrupt signal, shutting down...")
 		fmt.Println("(Hit ctrl-c again to force-shutdown the daemon.)")
 	}()
diff --git a/cmd/ipfs/daemon_linux.go b/cmd/ipfs/daemon_linux.go
new file mode 100644
index 000000000..f269e5f95
--- /dev/null
+++ b/cmd/ipfs/daemon_linux.go
@@ -0,0 +1,15 @@
+// +build linux
+
+package main
+
+import (
+	daemon "github.com/coreos/go-systemd/daemon"
+)
+
+func notifyReady() {
+	_, _ = daemon.SdNotify(false, daemon.SdNotifyReady)
+}
+
+func notifyStopping() {
+	_, _ = daemon.SdNotify(false, daemon.SdNotifyStopping)
+}
diff --git a/cmd/ipfs/daemon_other.go b/cmd/ipfs/daemon_other.go
new file mode 100644
index 000000000..4ffdd8b8e
--- /dev/null
+++ b/cmd/ipfs/daemon_other.go
@@ -0,0 +1,7 @@
+// +build !linux
+
+package main
+
+func notifyReady() {}
+
+func notifyStopping() {}
diff --git a/misc/systemd/ipfs.service b/misc/systemd/ipfs.service
index e3dae25c9..0ee585ac6 100644
--- a/misc/systemd/ipfs.service
+++ b/misc/systemd/ipfs.service
@@ -2,6 +2,7 @@
 Description=IPFS Daemon
 
 [Service]
+Type=notify
 ExecStart=/usr/bin/ipfs daemon --init --migrate
 KillSignal=SIGINT