Allow unit tests on non-Linux OS

cmd/runmqserver/mqconfig_linux.go

@@ -0,0 +1,36 @@
+// +build linux
+
+package main
+
+import (
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+)
+
+// fsTypes contains file system identifier codes.
+// This code will not compile on some operating systems - Linux only.
+var fsTypes = map[int64]string{
+	0x61756673: "aufs",
+	0xef53:     "ext",
+	0x6969:     "nfs",
+	0x65735546: "fuse",
+	0x9123683e: "btrfs",
+	0x01021994: "tmpfs",
+	0x794c7630: "overlayfs",
+}
+
+func checkFS(path string) {
+	statfs := &unix.Statfs_t{}
+	err := unix.Statfs(path, statfs)
+	if err != nil {
+		log.Println(err)
+		return
+	}
+	t := fsTypes[statfs.Type]
+	switch t {
+	case "aufs", "overlayfs", "tmpfs":
+		log.Fatalf("Error: %v uses unsupported filesystem type %v", path, t)
+	default:
+		log.Printf("Detected %v has filesystem type '%v'", path, t)
+	}
+}