1 files changed, 46 insertions, 0 deletions

diff --git a/include/uapi/linux/hyperv.h b/include/uapi/linux/hyperv.h
index 1861f8e2ce2b..9beb7c991638 100644
--- a/include/uapi/linux/hyperv.h
+++ b/include/uapi/linux/hyperv.h
@@ -25,6 +25,8 @@
 #ifndef _UAPI_HYPERV_H
 #define _UAPI_HYPERV_H
 
+#include <linux/uuid.h>
+
 /*
  * Framework version for util services.
  */
@@ -94,6 +96,50 @@ struct hv_vss_msg {
 } __attribute__((packed));
 
 /*
+ * Implementation of a host to guest copy facility.
+ */
+
+#define FCOPY_VERSION_0 0
+#define FCOPY_CURRENT_VERSION FCOPY_VERSION_0
+#define W_MAX_PATH 260
+
+enum hv_fcopy_op {
+        START_FILE_COPY = 0,
+        WRITE_TO_FILE,
+        COMPLETE_FCOPY,
+        CANCEL_FCOPY,
+};
+
+struct hv_fcopy_hdr {
+        __u32 operation;
+        uuid_le service_id0; /* currently unused */
+        uuid_le service_id1; /* currently unused */
+} __attribute__((packed));
+
+#define OVER_WRITE      0x1
+#define CREATE_PATH     0x2
+
+struct hv_start_fcopy {
+        struct hv_fcopy_hdr hdr;
+        __u16 file_name[W_MAX_PATH];
+        __u16 path_name[W_MAX_PATH];
+        __u32 copy_flags;
+        __u64 file_size;
+} __attribute__((packed));
+
+/*
+ * The file is chunked into fragments.
+ */
+#define DATA_FRAGMENT   (6 * 1024)
+
+struct hv_do_fcopy {
+        struct hv_fcopy_hdr hdr;
+        __u64   offset;
+        __u32   size;
+        __u8    data[DATA_FRAGMENT];
+};
+
+/*
  * An implementation of HyperV key value pair (KVP) functionality for Linux.
  *
  *