From b049991a46a2f619344bd6e915745703864d0134 Mon Sep 17 00:00:00 2001
From: Felix Hanley <felix@userspace.com.au>
Date: Mon, 5 Dec 2016 15:16:58 +0700
Subject: Clean up source structure and update vendor versions

---
 vendor/github.com/zenazn/goji/bind/systemd.go | 36 +++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 vendor/github.com/zenazn/goji/bind/systemd.go

(limited to 'vendor/github.com/zenazn/goji/bind/systemd.go')

diff --git a/vendor/github.com/zenazn/goji/bind/systemd.go b/vendor/github.com/zenazn/goji/bind/systemd.go
new file mode 100644
index 0000000..e7cd8e4
--- /dev/null
+++ b/vendor/github.com/zenazn/goji/bind/systemd.go
@@ -0,0 +1,36 @@
+// +build !windows
+
+package bind
+
+import (
+	"os"
+	"syscall"
+)
+
+const systemdMinFd = 3
+
+var systemdNumFds int
+
+// Unfortunately this can't be a normal init function, because their execution
+// order is undefined, and we need to run before the init() in bind.go.
+func systemdInit() {
+	pid, err := envInt("LISTEN_PID")
+	if err != nil || pid != os.Getpid() {
+		return
+	}
+
+	systemdNumFds, err = envInt("LISTEN_FDS")
+	if err != nil {
+		systemdNumFds = 0
+		return
+	}
+
+	// Prevent fds from leaking to our children
+	for i := 0; i < systemdNumFds; i++ {
+		syscall.CloseOnExec(systemdMinFd + i)
+	}
+}
+
+func usingSystemd() bool {
+	return systemdNumFds > 0
+}
-- 
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