PPAPI: Implement PPB_FileMapping on POSIX

ppapi/c/ppb_file_mapping.h

 /* Copyright (c) 2013 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-/* From dev/ppb_file_io_dev.idl modified Thu Sep 19 10:07:03 2013. */
+/* From ppb_file_mapping.idl modified Tue Dec 17 14:05:45 2013. */
 
-#ifndef PPAPI_C_DEV_PPB_FILE_IO_DEV_H_
-#define PPAPI_C_DEV_PPB_FILE_IO_DEV_H_
+#ifndef PPAPI_C_PPB_FILE_MAPPING_H_
+#define PPAPI_C_PPB_FILE_MAPPING_H_
 
 #include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 
-#define PPB_FILEIO_DEV_INTERFACE_0_1 "PPB_FileIO(Dev);0.1"
-#define PPB_FILEIO_DEV_INTERFACE PPB_FILEIO_DEV_INTERFACE_0_1
-
+#define PPB_FILEMAPPING_INTERFACE_0_1 "PPB_FileMapping;0.1" /* dev */
 /**
  * @file
  * This file defines methods for use with a PPB_FileIO resource that may become
  * stable in the future. For now, they can be used only in plugins with DEV
  * permissions.
  */
 
 
 /**
  * @addtogroup Enums
@@ skipping 38 matching lines @@
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileMapFlags, 4);
 /**
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
- *  PPB_FileIO_Dev contains functions that are usable with PPB_FileIO resources
+ *  PPB_FileMapping contains functions that are usable with PPB_FileIO resources
  *  but aren't yet considered stable yet and thus are not supported for general
  *  NaCl or PNaCl apps yet. Features here are being tested and refined for
  *  possible future inclusion in (stable) PPB_FileIO.
  */
-struct PPB_FileIO_Dev_0_1 {
+struct PPB_FileMapping_0_1 { /* dev */
   /**
    * Map() maps the contents from an offset of the file into memory.
    *
    * @param[in] file_io A PP_Resource corresponding to a file.
    * @param[in] length The number of bytes to map.
    * @param[in] map_protection A bitfield containing values from
    * PP_FileMapProtection, indicating what memory operations should be permitted
    * on the mapped region.
    * @param[in] map_flags A bitfield containing values from
    * PP_FileMapFlags, providing options for the behavior of Map. If the region
    * is to be writeable, then exactly one of PP_FILEMAPFLAG_SHARED or
    * PP_FILEMAPFLAG_PRIVATE must be set.
    * @param[in] offset The offset into the file. Must be a multiple of the
    * Map page size as returned by GetMapPageSize.
    * @param[inout] address The value of |*address|, if non-NULL, will be used as
    * a hint to determine where in memory the file should be mapped. If the value
    * is NULL, the host operating system will choose |address|. Upon
    * Map() completing, |*address| will contain the actual memory location at
    * which the file was mapped. If the plugin provides a non-NULL |*address|, it
    * must be a multiple of the map page size as returned by GetMapPageSize().
    * @param[in] callback A PP_CompletionCallback to be called upon
    * completion of Map().
    *
    * @return An int32_t containing an error code from <code>pp_errors.h</code>.
    */
-  int32_t (*Map)(PP_Resource file_io,
+  int32_t (*Map)(PP_Instance instance,
+                 PP_Resource file_io,
                  int64_t length,
                  uint32_t map_protection,
                  uint32_t map_flags,
                  int64_t offset,
                  void** address,
                  struct PP_CompletionCallback callback);
   /**
-   * Unmap() deletes the mapping of the specified address address to a
-   * file io.  The specified address must have been retrieved with
-   * Map().
-   * @param[in] file_io A PP_Resource corresponding to a file.
+   * Unmap() deletes the mapping of the specified address.  The specified
+   * address must have been retrieved with Map().
+   * @param[in] instance A <code>PP_Instance</code> identifying the instance.
    * @param[in] address The starting address of the address in memory to
    * be unmapped.
    * @param[in] length The length of the region to unmap.
    */
-  void (*Unmap)(PP_Resource file_io, void* address, int64_t length);
+  void (*Unmap)(PP_Instance file_io, void* address, int64_t length);
   /**
    * GetMapPageSize() returns the size of pages that Map() uses. Returns 0 on
    * failure.
+   * @param[in] instance A <code>PP_Instance</code> identifying the instance.
    */
-  int64_t (*GetMapPageSize)(PP_Resource file_io);
+  int64_t (*GetMapPageSize)(PP_Instance file_io);
 };
-
-typedef struct PPB_FileIO_Dev_0_1 PPB_FileIO_Dev;
 /**
  * @}
  */
 
-#endif  /* PPAPI_C_DEV_PPB_FILE_IO_DEV_H_ */
+#endif  /* PPAPI_C_PPB_FILE_MAPPING_H_ */