diff --git a/include/ion/ion.h b/include/ion/ion.h
index fbd34e2..0451b5a 100644
--- a/include/ion/ion.h
+++ b/include/ion/ion.h
@@ -30,15 +30,15 @@
 int ion_open();
 int ion_close(int fd);
 int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask,
-	      unsigned int flags, struct ion_handle **handle);
+	      unsigned int flags, ion_user_handle_t *handle);
 int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask,
 		 unsigned int flags, int *handle_fd);
 int ion_sync_fd(int fd, int handle_fd);
-int ion_free(int fd, struct ion_handle *handle);
-int ion_map(int fd, struct ion_handle *handle, size_t length, int prot,
+int ion_free(int fd, ion_user_handle_t handle);
+int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot,
             int flags, off_t offset, unsigned char **ptr, int *map_fd);
-int ion_share(int fd, struct ion_handle *handle, int *share_fd);
-int ion_import(int fd, int share_fd, struct ion_handle **handle);
+int ion_share(int fd, ion_user_handle_t handle, int *share_fd);
+int ion_import(int fd, int share_fd, ion_user_handle_t *handle);
 
 __END_DECLS
 
diff --git a/libion/ion.c b/libion/ion.c
index 020c35b..5fd35fe 100644
--- a/libion/ion.c
+++ b/libion/ion.c
@@ -55,13 +55,13 @@
 }
 
 int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask,
-	      unsigned int flags, struct ion_handle **handle)
+	      unsigned int flags, ion_user_handle_t *handle)
 {
         int ret;
         struct ion_allocation_data data = {
                 .len = len,
                 .align = align,
-		.heap_mask = heap_mask,
+		.heap_id_mask = heap_mask,
                 .flags = flags,
         };
 
@@ -72,7 +72,7 @@
         return ret;
 }
 
-int ion_free(int fd, struct ion_handle *handle)
+int ion_free(int fd, ion_user_handle_t handle)
 {
         struct ion_handle_data data = {
                 .handle = handle,
@@ -80,7 +80,7 @@
         return ion_ioctl(fd, ION_IOC_FREE, &data);
 }
 
-int ion_map(int fd, struct ion_handle *handle, size_t length, int prot,
+int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot,
             int flags, off_t offset, unsigned char **ptr, int *map_fd)
 {
         struct ion_fd_data data = {
@@ -103,7 +103,7 @@
         return ret;
 }
 
-int ion_share(int fd, struct ion_handle *handle, int *share_fd)
+int ion_share(int fd, ion_user_handle_t handle, int *share_fd)
 {
         int map_fd;
         struct ion_fd_data data = {
@@ -123,7 +123,7 @@
 
 int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask,
 		 unsigned int flags, int *handle_fd) {
-	struct ion_handle *handle;
+	ion_user_handle_t handle;
 	int ret;
 
 	ret = ion_alloc(fd, len, align, heap_mask, flags, &handle);
@@ -134,7 +134,7 @@
 	return ret;
 }
 
-int ion_import(int fd, int share_fd, struct ion_handle **handle)
+int ion_import(int fd, int share_fd, ion_user_handle_t *handle)
 {
         struct ion_fd_data data = {
                 .fd = share_fd,
diff --git a/libion/ion_test.c b/libion/ion_test.c
index 8179b57..becae42 100644
--- a/libion/ion_test.c
+++ b/libion/ion_test.c
@@ -22,7 +22,7 @@
 int test = -1;
 size_t stride;
 
-int _ion_alloc_test(int *fd, struct ion_handle **handle)
+int _ion_alloc_test(int *fd, ion_user_handle_t *handle)
 {
 	int ret;
 
@@ -40,7 +40,7 @@
 void ion_alloc_test()
 {
 	int fd, ret;
-	struct ion_handle *handle;
+	ion_user_handle_t handle;
 
 	if(_ion_alloc_test(&fd, &handle))
 			return;
@@ -58,7 +58,7 @@
 {
 	int fd, map_fd, ret;
 	size_t i;
-	struct ion_handle *handle;
+	ion_user_handle_t handle;
 	unsigned char *ptr;
 
 	if(_ion_alloc_test(&fd, &handle))
@@ -99,7 +99,7 @@
 void ion_share_test()
 
 {
-	struct ion_handle *handle;
+	ion_user_handle_t handle;
 	int sd[2];
 	int num_fd = 1;
 	struct iovec count_vec = {