file_io_resource.cc revision 0f1bc08d4cfcc34181b0b5cbf065c40f687bf740
12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// found in the LICENSE file. 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/proxy/file_io_resource.h" 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/bind.h" 8ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "base/task_runner_util.h" 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ipc/ipc_message.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/c/pp_errors.h" 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/proxy/ppapi_messages.h" 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/shared_impl/array_writer.h" 13ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "ppapi/shared_impl/file_type_conversion.h" 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/shared_impl/ppapi_globals.h" 15ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "ppapi/shared_impl/proxy_lock.h" 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/shared_impl/resource_tracker.h" 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/thunk/enter.h" 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/thunk/ppb_file_ref_api.h" 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)using ppapi::thunk::EnterResourceNoLock; 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)using ppapi::thunk::PPB_FileIO_API; 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)using ppapi::thunk::PPB_FileRef_API; 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace { 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 26ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// We must allocate a buffer sized according to the request of the plugin. To 27ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// reduce the chance of out-of-memory errors, we cap the read size to 32MB. 28ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// This is OK since the API specifies that it may perform a partial read. 29ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochstatic const int32_t kMaxReadSize = 32 * 1024 * 1024; // 32MB 30ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// An adapter to let Read() share the same implementation with ReadToArray(). 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void* DummyGetDataBuffer(void* user_data, uint32_t count, uint32_t size) { 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return user_data; 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 36ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// File thread task to close the file handle. 37ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochvoid DoClose(base::PlatformFile file) { 38ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::ClosePlatformFile(file); 39ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 40ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace ppapi { 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace proxy { 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 464e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)FileIOResource::QueryOp::QueryOp(scoped_refptr<FileHandleHolder> file_handle) 47ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch : file_handle_(file_handle) { 484e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) DCHECK(file_handle_); 49ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 50ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 51ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben MurdochFileIOResource::QueryOp::~QueryOp() { 52ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 53ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 54ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochint32_t FileIOResource::QueryOp::DoWork() { 554e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return base::GetPlatformFileInfo(file_handle_->raw_handle(), &file_info_) ? 56ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PP_OK : PP_ERROR_FAILED; 57ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 58ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 594e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)FileIOResource::ReadOp::ReadOp(scoped_refptr<FileHandleHolder> file_handle, 60ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int64_t offset, 61ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int32_t bytes_to_read) 62ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch : file_handle_(file_handle), 63ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch offset_(offset), 64ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch bytes_to_read_(bytes_to_read) { 654e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) DCHECK(file_handle_); 66ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 67ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 68ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben MurdochFileIOResource::ReadOp::~ReadOp() { 69ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 71ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochint32_t FileIOResource::ReadOp::DoWork() { 72ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DCHECK(!buffer_.get()); 73ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch buffer_.reset(new char[bytes_to_read_]); 74ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return base::ReadPlatformFile( 754e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) file_handle_->raw_handle(), offset_, buffer_.get(), bytes_to_read_); 76ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 77ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)FileIOResource::FileIOResource(Connection connection, PP_Instance instance) 79ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch : PluginResource(connection, instance), 80ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch file_system_type_(PP_FILESYSTEMTYPE_INVALID) { 810f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) SendCreate(BROWSER, PpapiHostMsg_FileIO_Create()); 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)FileIOResource::~FileIOResource() { 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)PPB_FileIO_API* FileIOResource::AsPPB_FileIO_API() { 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return this; 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Open(PP_Resource file_ref, 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t open_flags, 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) EnterResourceNoLock<PPB_FileRef_API> enter(file_ref, true); 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (enter.failed()) 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_ERROR_BADRESOURCE; 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 98ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PPB_FileRef_API* file_ref_api = enter.object(); 99ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PP_FileSystemType type = file_ref_api->GetFileSystemType(); 100ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (type != PP_FILESYSTEMTYPE_LOCALPERSISTENT && 101ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch type != PP_FILESYSTEMTYPE_LOCALTEMPORARY && 102ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch type != PP_FILESYSTEMTYPE_EXTERNAL && 103ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch type != PP_FILESYSTEMTYPE_ISOLATED) { 104ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch NOTREACHED(); 105ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_ERROR_FAILED; 106ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 107ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch file_system_type_ = type; 108ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 1102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE, false); 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 114d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // Take a reference on the FileRef resource while we're opening the file; we 115d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // don't want the plugin destroying it during the Open operation. 116d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) file_ref_ = enter.resource(); 117d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) 1180f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_OpenReply>(BROWSER, 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiHostMsg_FileIO_Open( 120d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) file_ref, 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) open_flags), 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Bind(&FileIOResource::OnPluginMsgOpenFileComplete, this, 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback)); 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 1262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 1272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Query(PP_FileInfo* info, 1302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 1312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE, true); 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 135ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (!info) 136ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_ERROR_BADARGUMENT; 1374e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) if (!FileHandleHolder::IsValid(file_handle_)) 138ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_ERROR_FAILED; 1392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 141ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 142ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // If the callback is blocking, perform the task on the calling thread. 143ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (callback->is_blocking()) { 1441e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) int32_t result = PP_ERROR_FAILED; 1451e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) base::PlatformFileInfo file_info; 1461e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // The plugin could release its reference to this instance when we release 1471e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // the proxy lock below. 1481e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) scoped_refptr<FileIOResource> protect(this); 149ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch { 150ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // Release the proxy lock while making a potentially slow file call. 151ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch ProxyAutoUnlock unlock; 1521e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (base::GetPlatformFileInfo(file_handle_->raw_handle(), &file_info)) 1531e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) result = PP_OK; 1541e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) } 1551e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (result == PP_OK) { 1561e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // This writes the file info into the plugin's PP_FileInfo struct. 1571e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) ppapi::PlatformFileInfoToPepperFileInfo(file_info, 1581e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) file_system_type_, 1591e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) info); 160ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 1611e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) state_manager_.SetOperationFinished(); 1621e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) return result; 163ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 164ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 165ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // For the non-blocking case, post a task to the file thread and add a 166ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // completion task to write the result. 1671e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) scoped_refptr<QueryOp> query_op(new QueryOp(file_handle_)); 168ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::PostTaskAndReplyWithResult( 1694e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) PpapiGlobals::Get()->GetFileTaskRunner(), 170ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch FROM_HERE, 171ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch Bind(&FileIOResource::QueryOp::DoWork, query_op), 172ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch RunWhileLocked(Bind(&TrackedCallback::Run, callback))); 173ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch callback->set_completion_task( 174ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch Bind(&FileIOResource::OnQueryComplete, this, query_op, info)); 175ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Touch(PP_Time last_access_time, 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Time last_modified_time, 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 1822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 1832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE, true); 1842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 1852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 1862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1870f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_GeneralReply>(BROWSER, 1882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiHostMsg_FileIO_Touch(last_access_time, last_modified_time), 1892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Bind(&FileIOResource::OnPluginMsgGeneralComplete, this, 1902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback)); 1912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 1932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 1942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Read(int64_t offset, 1972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) char* buffer, 1982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t bytes_to_read, 1992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 2002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_READ, true); 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 2032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_ArrayOutput output_adapter; 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) output_adapter.GetDataBuffer = &DummyGetDataBuffer; 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) output_adapter.user_data = buffer; 2082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return ReadValidated(offset, bytes_to_read, output_adapter, callback); 2092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::ReadToArray(int64_t offset, 2122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t max_read_length, 2132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_ArrayOutput* array_output, 2142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 2152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(array_output); 2162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 2172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_READ, true); 2182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 2192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 2202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return ReadValidated(offset, max_read_length, *array_output, callback); 2222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Write(int64_t offset, 2252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const char* buffer, 2262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t bytes_to_write, 2272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 2282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 2292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_WRITE, true); 2302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 2312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 2322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // TODO(brettw) it would be nice to use a shared memory buffer for large 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // writes rather than having to copy to a string (which will involve a number 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // of extra copies to serialize over IPC). 2360f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_GeneralReply>(BROWSER, 2372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiHostMsg_FileIO_Write(offset, std::string(buffer, bytes_to_write)), 2382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Bind(&FileIOResource::OnPluginMsgGeneralComplete, this, 2392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback)); 2402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_WRITE); 2422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 2432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::SetLength(int64_t length, 2462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 2472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 2482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE, true); 2492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 2502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 2512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2520f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_GeneralReply>(BROWSER, 2532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiHostMsg_FileIO_SetLength(length), 2542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Bind(&FileIOResource::OnPluginMsgGeneralComplete, this, 2552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback)); 2562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::Flush(scoped_refptr<TrackedCallback> callback) { 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t rv = state_manager_.CheckOperationState( 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE, true); 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (rv != PP_OK) 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rv; 2662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2670f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_GeneralReply>(BROWSER, 2682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiHostMsg_FileIO_Flush(), 2692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::Bind(&FileIOResource::OnPluginMsgGeneralComplete, this, 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback)); 2712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void FileIOResource::Close() { 2774e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) if (file_handle_) { 2784e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) file_handle_ = NULL; 2794e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 2800f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Post(BROWSER, PpapiHostMsg_FileIO_Close()); 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 283ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochint32_t FileIOResource::RequestOSFileHandle( 284ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PP_FileHandle* handle, 285ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch scoped_refptr<TrackedCallback> callback) { 286ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int32_t rv = state_manager_.CheckOperationState( 287ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch FileIOStateManager::OPERATION_EXCLUSIVE, true); 288ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (rv != PP_OK) 289ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return rv; 290ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 2910f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) Call<PpapiPluginMsg_FileIO_RequestOSFileHandleReply>(BROWSER, 292ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PpapiHostMsg_FileIO_RequestOSFileHandle(), 293ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::Bind(&FileIOResource::OnPluginMsgRequestOSFileHandleComplete, this, 294ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch callback, handle)); 295ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 296ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE); 297ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_OK_COMPLETIONPENDING; 298ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 299ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 3004e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)FileIOResource::FileHandleHolder::FileHandleHolder(PP_FileHandle file_handle) 3014e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) : raw_handle_(file_handle) { 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3044e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// static 3054e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)bool FileIOResource::FileHandleHolder::IsValid( 3064e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) const scoped_refptr<FileIOResource::FileHandleHolder>& handle) { 3074e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return handle && (handle->raw_handle() != base::kInvalidPlatformFileValue); 3084e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)} 309ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 3104e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)FileIOResource::FileHandleHolder::~FileHandleHolder() { 3114e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) if (raw_handle_ != base::kInvalidPlatformFileValue) { 3124e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::TaskRunner* file_task_runner = 3134e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) PpapiGlobals::Get()->GetFileTaskRunner(); 3144e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) file_task_runner->PostTask(FROM_HERE, 3154e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::Bind(&DoClose, raw_handle_)); 3164e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 3172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FileIOResource::ReadValidated(int64_t offset, 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t bytes_to_read, 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const PP_ArrayOutput& array_output, 3222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback) { 323ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (bytes_to_read < 0) 324ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_ERROR_FAILED; 3254e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) if (!FileHandleHolder::IsValid(file_handle_)) 326ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return PP_ERROR_FAILED; 327ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 328ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_READ); 329ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 330ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch bytes_to_read = std::min(bytes_to_read, kMaxReadSize); 331ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (callback->is_blocking()) { 3321e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) char* buffer = static_cast<char*>( 3331e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) array_output.GetDataBuffer(array_output.user_data, bytes_to_read, 1)); 3341e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) int32_t result = PP_ERROR_FAILED; 3351e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // The plugin could release its reference to this instance when we release 3361e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // the proxy lock below. 3371e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) scoped_refptr<FileIOResource> protect(this); 3381e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (buffer) { 339ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // Release the proxy lock while making a potentially slow file call. 340ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch ProxyAutoUnlock unlock; 3411e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) result = base::ReadPlatformFile( 3421e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) file_handle_->raw_handle(), offset, buffer, bytes_to_read); 3431e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (result < 0) 3441e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) result = PP_ERROR_FAILED; 345ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 3461e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) state_manager_.SetOperationFinished(); 3471e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) return result; 348ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 349ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 350ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // For the non-blocking case, post a task to the file thread. 3511e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) scoped_refptr<ReadOp> read_op( 3521e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) new ReadOp(file_handle_, offset, bytes_to_read)); 353ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch base::PostTaskAndReplyWithResult( 3544e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) PpapiGlobals::Get()->GetFileTaskRunner(), 355ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch FROM_HERE, 356ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch Bind(&FileIOResource::ReadOp::DoWork, read_op), 357ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch RunWhileLocked(Bind(&TrackedCallback::Run, callback))); 358ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch callback->set_completion_task( 359ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch Bind(&FileIOResource::OnReadComplete, this, read_op, array_output)); 360ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 3612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK_COMPLETIONPENDING; 3622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 364ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochint32_t FileIOResource::OnQueryComplete(scoped_refptr<QueryOp> query_op, 365ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PP_FileInfo* info, 366ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int32_t result) { 367ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DCHECK(state_manager_.get_pending_operation() == 368ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch FileIOStateManager::OPERATION_EXCLUSIVE); 369ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 370ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (result == PP_OK) { 371ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // This writes the file info into the plugin's PP_FileInfo struct. 372ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch ppapi::PlatformFileInfoToPepperFileInfo(query_op->file_info(), 373ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch file_system_type_, 374ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch info); 375ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 376ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch state_manager_.SetOperationFinished(); 377ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return result; 378ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch} 379ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 380ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdochint32_t FileIOResource::OnReadComplete(scoped_refptr<ReadOp> read_op, 381ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch PP_ArrayOutput array_output, 382ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int32_t result) { 383ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch DCHECK(state_manager_.get_pending_operation() == 384ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch FileIOStateManager::OPERATION_READ); 385ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (result >= 0) { 386ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch ArrayWriter output; 387ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch output.set_pp_array_output(array_output); 388ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch if (output.is_valid()) 389ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch output.StoreArray(read_op->buffer(), result); 390ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch else 391ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch result = PP_ERROR_FAILED; 392ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } else { 393ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // The read operation failed. 394ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch result = PP_ERROR_FAILED; 395ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } 396ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch state_manager_.SetOperationFinished(); 397ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch return result; 398c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 399c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 4002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void FileIOResource::OnPluginMsgGeneralComplete( 4012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback, 4022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const ResourceMessageReplyParams& params) { 4032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(state_manager_.get_pending_operation() == 4042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE || 4052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.get_pending_operation() == 4062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_WRITE); 407ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // End this operation now, so the user's callback can execute another FileIO 408ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // operation, assuming there are no other pending operations. 4092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetOperationFinished(); 4102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) callback->Run(params.result()); 4112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void FileIOResource::OnPluginMsgOpenFileComplete( 4142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_refptr<TrackedCallback> callback, 4152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const ResourceMessageReplyParams& params) { 4162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(state_manager_.get_pending_operation() == 4172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE); 418d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) 419d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // Release the FileRef resource. 420d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) file_ref_ = NULL; 4212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (params.result() == PP_OK) 4222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetOpenSucceed(); 423a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 4242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t result = params.result(); 425ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch IPC::PlatformFileForTransit transit_file; 4264e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) if ((result == PP_OK) && params.TakeFileHandleAtIndex(0, &transit_file)) { 4274e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) file_handle_ = new FileHandleHolder( 4284e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) IPC::PlatformFileForTransitToPlatformFile(transit_file)); 4294e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 430ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // End this operation now, so the user's callback can execute another FileIO 431ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // operation, assuming there are no other pending operations. 4322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) state_manager_.SetOperationFinished(); 433a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) callback->Run(result); 4342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 436c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)void FileIOResource::OnPluginMsgRequestOSFileHandleComplete( 437c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) scoped_refptr<TrackedCallback> callback, 438c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) PP_FileHandle* output_handle, 439c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) const ResourceMessageReplyParams& params) { 440c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(state_manager_.get_pending_operation() == 441c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) FileIOStateManager::OPERATION_EXCLUSIVE); 442c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 443c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!TrackedCallback::IsPending(callback)) { 444c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) state_manager_.SetOperationFinished(); 445c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return; 446c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 447c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 448c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int32_t result = params.result(); 449c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) IPC::PlatformFileForTransit transit_file; 450c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!params.TakeFileHandleAtIndex(0, &transit_file)) 451c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) result = PP_ERROR_FAILED; 452c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) *output_handle = IPC::PlatformFileForTransitToPlatformFile(transit_file); 453c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 454ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // End this operation now, so the user's callback can execute another FileIO 455ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // operation, assuming there are no other pending operations. 456c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) state_manager_.SetOperationFinished(); 457c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) callback->Run(result); 458c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 459c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 4602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace proxy 4612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace ppapi 462