+
+/*
+ * Do not change the length of the returned string; it must be freed
+ * with strfree().
+ */
+char *
+kmem_asprintf(const char *fmt, ...)
+{
+ int size;
+ va_list adx;
+ char *buf;
+
+ va_start(adx, fmt);
+ size = vsnprintf(NULL, 0, fmt, adx) + 1;
+ va_end(adx);
+
+ buf = kmem_alloc(size, KM_SLEEP);
+
+ va_start(adx, fmt);
+ size = vsnprintf(buf, size, fmt, adx);
+ va_end(adx);
+
+ return (buf);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_fd_hold(int fd, minor_t *minorp)
+{
+ *minorp = 0;
+ return (0);
+}
+
+/* ARGSUSED */
+void
+zfs_onexit_fd_rele(int fd)
+{
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_add_cb(minor_t minor, void (*func)(void *), void *data,
+ uint64_t *action_handle)
+{
+ return (0);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_del_cb(minor_t minor, uint64_t action_handle, boolean_t fire)
+{
+ return (0);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_cb_data(minor_t minor, uint64_t action_handle, void **data)
+{
+ return (0);
+}