ppapi/native_client/src/trusted/plugin/file_utils.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Some common file utilities for plugin code.
   6
   7 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
   8 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
   9
  10 #include "native_client/src/include/nacl_string.h"
  11 #include "native_client/src/include/portability_io.h"
  12 #include "ppapi/c/pp_stdint.h"
  13
  14 namespace plugin {
  15 namespace file_utils {
  16
  17 enum StatusCode {
  18   PLUGIN_FILE_SUCCESS = 0,
  19   PLUGIN_FILE_ERROR_MEM_ALLOC = 1,
  20   PLUGIN_FILE_ERROR_OPEN = 2,
  21   PLUGIN_FILE_ERROR_FILE_TOO_LARGE = 3,
  22   PLUGIN_FILE_ERROR_STAT = 4,
  23   PLUGIN_FILE_ERROR_READ = 5
  24 };
  25
  26 // Slurp the whole contents of the given file (|fd| - open file descriptor) into
  27 // |out_buf|. |max_size_to_read| is the maximal allowed size of the file.
  28 // If the file turns out to be larger, an error is returned. In any case,
  29 // |fd| is closed.
  30 StatusCode SlurpFile(int32_t fd,
  31                      nacl::string& out_buf,
  32                      size_t max_size_to_read = (1 << 20));
  33
  34 }  // namespace file_utils
  35 }  // namespace plugin
  36
  37 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_FILE_UTILS_H_
  38