15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "ppapi/native_client/src/trusted/plugin/temporary_file.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "native_client/src/include/portability_io.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "native_client/src/shared/platform/nacl_check.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "native_client/src/trusted/service_runtime/include/sys/stat.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/cpp/core.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/cpp/instance.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/cpp/module.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/private/pp_file_handle.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "ppapi/native_client/src/trusted/plugin/plugin.h" 17ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "ppapi/native_client/src/trusted/plugin/utility.h" 18ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace plugin { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)TempFile::TempFile(Plugin* plugin, PP_FileHandle handle) 225f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) : plugin_(plugin), 235f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) internal_handle_(handle) { } 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)TempFile::~TempFile() { } 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)int32_t TempFile::Open(bool writeable) { 285f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) if (internal_handle_ == PP_kInvalidFileHandle) 29cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return PP_ERROR_FAILED; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if NACL_WINDOWS 32cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) HANDLE handle = internal_handle_; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) //////// Now try the posix view. 35eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch int rdwr_flag = writeable ? _O_RDWR : _O_RDONLY; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t posix_desc = _open_osfhandle(reinterpret_cast<intptr_t>(handle), 37eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch rdwr_flag | _O_BINARY 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | _O_TEMPORARY | _O_SHORT_LIVED ); 395f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 405f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) // Close the Windows HANDLE if it can't be converted. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (posix_desc == -1) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PLUGIN_PRINTF(("TempFile::Open failed to convert HANDLE to posix\n")); 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseHandle(handle); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t fd = posix_desc; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 47cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) int32_t fd = internal_handle_; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) if (fd < 0) 51cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return PP_ERROR_FAILED; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 53cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // dup the fd to make allow making separate read and write wrappers. 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int32_t read_fd = DUP(fd); 555f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) if (read_fd == NACL_NO_FILE_DESC) 56cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return PP_ERROR_FAILED; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 58eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (writeable) { 59eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch write_wrapper_.reset( 60cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) plugin_->wrapper_factory()->MakeFileDesc(fd, O_RDWR)); 61eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 62cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) read_wrapper_.reset( 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) plugin_->wrapper_factory()->MakeFileDesc(read_fd, O_RDONLY)); 65cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return PP_OK; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool TempFile::Reset() { 69eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // Use the read_wrapper_ to reset the file pos. The write_wrapper_ is also 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // backed by the same file, so it should also reset. 71eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch CHECK(read_wrapper_.get() != NULL); 72eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch nacl_off64_t newpos = read_wrapper_->Seek(0, SEEK_SET); 73cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return newpos == 0; 74cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 75cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 76cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)PP_FileHandle TempFile::TakeFileHandle() { 77cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) PP_FileHandle to_return = internal_handle_; 78cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) internal_handle_ = PP_kInvalidFileHandle; 79cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) read_wrapper_.release(); 80cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) write_wrapper_.release(); 81cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return to_return; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace plugin 85