PPAPI: Implement PPB_FileMapping on POSIX

ppapi/c/dev/ppb_file_io_dev.h

Index: ppapi/c/dev/ppb_file_io_dev.h
diff --git a/ppapi/c/dev/ppb_file_io_dev.h b/ppapi/c/dev/ppb_file_io_dev.h
deleted file mode 100644
index a60d3a64c103e1cf13916acf7a4d5544b5ef8c05..0000000000000000000000000000000000000000
--- a/ppapi/c/dev/ppb_file_io_dev.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/* 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. */
-
-#ifndef PPAPI_C_DEV_PPB_FILE_IO_DEV_H_
-#define PPAPI_C_DEV_PPB_FILE_IO_DEV_H_
-
-#include "ppapi/c/pp_completion_callback.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
-
-/**
- * @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
- * @{
- */
-/**
- * The PP_FileMapProtection values indicate the permissions requested for the
- * file mapping. These should be used in a uint32_t bitfield.
- */
-typedef enum {
-  /** Requests read access to the mapped address. */
-  PP_FILEMAPPROTECTION_READ = 1u << 0,
-  /** Requests write access to the mapped address. */
-  PP_FILEMAPPROTECTION_WRITE = 1u << 1
-} PP_FileMapProtection;
-PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileMapProtection, 4);
-
-/**
- * The PP_FileMapFlags contain flag values for use with Map().
- */
-typedef enum {
-  /**
-   * Requests a shared mapping. If this flag is set, changes written to the
-   * memory region will be reflected in the underlying file and will thus
-   * eventually be visible to other processes which have opened the file. The
-   * file may not actually be updated until Unmap() is called. This is only
-   * valid if the PPB_FileIO resource was opened with write permission.
-   */
-  PP_FILEMAPFLAG_SHARED = 1u << 0,
-  /**
-   * Requests a copy-on-write mapping. If this flag is set, changes are not
-   * written to the underlying file, but only in the memory of the process
-   * (copy-on-write).
-   */
-  PP_FILEMAPFLAG_PRIVATE = 1u << 1,
-  /**
-   * Forces Map() to map the file contents at the provided |address|. If Map()
-   * can not comply, Map() will fail.
-   */
-  PP_FILEMAPFLAG_FIXED = 1u << 2
-} PP_FileMapFlags;
-PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileMapFlags, 4);
-/**
- * @}
- */
-
-/**
- * @addtogroup Interfaces
- * @{
- */
-/**
- *  PPB_FileIO_Dev 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 {
-  /**
-   * 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,
-                 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.
-   * @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);
-  /**
-   * GetMapPageSize() returns the size of pages that Map() uses. Returns 0 on
-   * failure.
-   */
-  int64_t (*GetMapPageSize)(PP_Resource file_io);
-};
-
-typedef struct PPB_FileIO_Dev_0_1 PPB_FileIO_Dev;
-/**
- * @}
- */
-
-#endif  /* PPAPI_C_DEV_PPB_FILE_IO_DEV_H_ */
-