diff --git a/src/cmd/vbackup/mount-Darwin.c b/src/cmd/vbackup/mount-Darwin.c
index 3dde4fdf..0cb4ce2c 100644
--- a/src/cmd/vbackup/mount-Darwin.c
+++ b/src/cmd/vbackup/mount-Darwin.c
@@ -1 +1,51 @@
-#include "mount-none.c"
+#include <u.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/syslog.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_clnt.h>
+#include <rpc/pmap_prot.h>
+#include <nfs/rpcv2.h>
+#include <nfs/nfsproto.h>
+#include <nfs/nfs.h>
+#include <libc.h>
+#include "mountnfs.h"
+
+void
+mountnfs(int proto, struct sockaddr_in *sa,
+	 uchar *handle, int nhandle, char *mtpt)
+{
+	int mflag;
+	struct nfs_args na;
+
+	memset(&na, 0, sizeof na);
+	na.version = NFS_ARGSVERSION;
+	na.addr = (struct sockaddr*)sa;
+	na.addrlen = sizeof *sa;
+	na.sotype = proto;
+	na.proto = (proto == SOCK_STREAM) ? IPPROTO_TCP : IPPROTO_UDP;
+	na.fh = handle;
+	na.fhsize = nhandle;
+	na.flags = NFSMNT_RESVPORT|NFSMNT_NFSV3|NFSMNT_INT;
+	na.wsize = NFS_WSIZE;
+	na.rsize = NFS_RSIZE;
+	na.readdirsize = NFS_READDIRSIZE;
+	na.timeo = 2;
+	na.retrans = NFS_RETRANS;
+	na.maxgrouplist = NFS_MAXGRPS;
+	na.readahead = 0;
+	na.deadthresh = 0;
+	na.hostname = "backup";
+	na.acregmin = 60;
+	na.acregmax = 600;
+	na.acdirmin = 60;
+	na.acdirmax = 600;
+
+	mflag = MNT_RDONLY|MNT_NOSUID|MNT_NODEV;
+	if(mount("nfs", mtpt, mflag, &na) < 0)
+		sysfatal("mount: %r");
+}