diff -Naur busybox-1.13.3.orig/include/platform.h busybox-1.13.3/include/platform.h
--- busybox-1.13.3.orig/include/platform.h	2009-06-03 02:24:03.000000000 +0200
+++ busybox-1.13.3/include/platform.h	2009-06-03 02:18:00.000000000 +0200
@@ -361,6 +361,28 @@
 #if !defined(BLKGETSIZE64)
 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
 #endif
+
+#elif defined(__FreeBSD_kernel__)
+#include <sys/mount.h>
+#define MS_NOSUID MNT_NOSUID
+#define MS_NOEXEC MNT_NOEXEC
+#define MS_SYNCHRONOUS MNT_SYNCHRONOUS
+#define MS_NOATIME MNT_NOATIME
+#define MS_RDONLY MNT_RDONLY
+#define MS_NODEV 0
+#define MS_DIRSYNC 0
+#define MS_NODIRATIME 0
+#define MS_MANDLOCK 0
+#define MS_RELATIME 0
+#define MS_SILENT 0
+#define MS_BIND 0
+#define MS_MOVE 0
+#define MS_SHARED 0
+#define MS_SLAVE 0
+#define MS_PRIVATE 0
+#define MS_UNBINDABLE 0
+#define MS_RECURSIVE 0
+#define MS_REMOUNT 0
 #endif
 
 /* TIOCGSERIAL, CBAUD and CBAUDEX are Linux specific. */
diff -Naur busybox-1.13.3.orig/util-linux/mount.c busybox-1.13.3/util-linux/mount.c
--- busybox-1.13.3.orig/util-linux/mount.c	2009-02-26 12:47:43.000000000 +0100
+++ busybox-1.13.3/util-linux/mount.c	2009-06-03 02:12:39.000000000 +0200
@@ -34,6 +34,7 @@
 #include <rpc/pmap_prot.h>
 #include <rpc/pmap_clnt.h>
 
+#if defined(__linux__)
 #ifndef MS_SILENT
 #define MS_SILENT	(1 << 15)
 #endif
@@ -41,6 +42,7 @@
 #ifndef MS_DIRSYNC
 #define MS_DIRSYNC      128     /* Directory modifications are synchronous */
 #endif
+#endif
 
 
 #if defined(__dietlibc__)
@@ -254,8 +256,52 @@
 	return rc;
 }
 #else
+#if defined(__FreeBSD_kernel__)
+static void
+build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val,
+	    size_t len)
+{
+	int i;
+
+	if (*iovlen < 0)
+		return;
+	i = *iovlen;
+	*iov = realloc(*iov, sizeof **iov * (i + 2));
+	if (*iov == NULL) {
+		*iovlen = -1;
+		return;
+	}
+	(*iov)[i].iov_base = strdup(name);
+	(*iov)[i].iov_len = strlen(name) + 1;
+	i++;
+	(*iov)[i].iov_base = val;
+	if (len == (size_t)-1) {
+		if (val != NULL)
+			len = strlen(val) + 1;
+		else
+			len = 0;
+	}
+	(*iov)[i].iov_len = (int)len;
+	*iovlen = ++i;
+}
+
+int verbose_mount(const char *source, const char *target,
+		const char *filesystemtype,
+		unsigned long mountflags, const void *data)
+{
+	struct iovec *iov = NULL;
+	int iovlen = 0;
+
+	build_iovec(&iov, &iovlen, "fstype", filesystemtype, (size_t)-1);
+	build_iovec(&iov, &iovlen, "fspath", target, (size_t)-1);
+	build_iovec(&iov, &iovlen, "from", source, (size_t)-1);
+
+	return nmount(iov, iovlen, mountflags);
+}
+#else
 #define verbose_mount(...) mount(__VA_ARGS__)
 #endif
+#endif
 
 static int resolve_mount_spec(char **fsname)
 {