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| 1 /* Copyright (c) 2012 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 | |
| 6 #include "nacl_mounts/mount_html5fs.h" | |
| 7 | |
| 8 #include <errno.h> | |
| 9 #include <ppapi/c/pp_completion_callback.h> | |
| 10 #include <ppapi/c/pp_errors.h> | |
| 11 #include <stdlib.h> | |
| 12 #include <string.h> | |
| 13 #include <algorithm> | |
| 14 #include "nacl_mounts/mount_node_html5fs.h" | |
| 15 #include "utils/auto_lock.h" | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 #if defined(WIN32) | |
| 20 int64_t strtoull(const char* nptr, char** endptr, int base) { | |
| 21 return _strtoui64(nptr, endptr, base); | |
| 22 } | |
| 23 #endif | |
| 24 | |
| 25 } // namespace | |
| 26 | |
| 27 MountNode *MountHtml5Fs::Open(const Path& path, int mode) { | |
| 28 if (!IsFilesystemOpen()) | |
| 29 return NULL; | |
| 30 | |
| 31 PP_Resource fileref = ppapi()->GetFileRefInterface()->Create( | |
| 32 filesystem_resource_, path.Join().c_str()); | |
| 33 if (!fileref) | |
| 34 return NULL; | |
| 35 | |
| 36 MountNodeHtml5Fs* node = new MountNodeHtml5Fs(this, fileref); | |
| 37 if (!node->Init(mode)) { | |
| 38 node->Release(); | |
| 39 return NULL; | |
| 40 } | |
| 41 | |
| 42 return node; | |
| 43 } | |
| 44 | |
| 45 int MountHtml5Fs::Unlink(const Path& path) { | |
| 46 return Remove(path); | |
| 47 } | |
| 48 | |
| 49 int MountHtml5Fs::Mkdir(const Path& path, int permissions) { | |
| 50 if (!IsFilesystemOpen()) { | |
| 51 errno = EINVAL; | |
| 52 return -1; | |
| 53 } | |
| 54 | |
| 55 ScopedResource fileref_resource( | |
| 56 ppapi(), ppapi()->GetFileRefInterface()->Create(filesystem_resource_, | |
| 57 path.Join().c_str())); | |
| 58 if (!fileref_resource.pp_resource()) { | |
| 59 errno = EINVAL; | |
| 60 return -1; | |
| 61 } | |
| 62 | |
| 63 int32_t result = ppapi()->GetFileRefInterface()->MakeDirectory( | |
| 64 fileref_resource.pp_resource(), PP_FALSE, PP_BlockUntilComplete()); | |
| 65 if (result != PP_OK) { | |
| 66 errno = PPErrorToErrno(result); | |
| 67 return -1; | |
| 68 } | |
| 69 | |
| 70 return 0; | |
| 71 } | |
| 72 | |
| 73 int MountHtml5Fs::Rmdir(const Path& path) { | |
| 74 return Remove(path); | |
| 75 } | |
| 76 | |
| 77 int MountHtml5Fs::Remove(const Path& path) { | |
| 78 if (!IsFilesystemOpen()) { | |
| 79 errno = EINVAL; | |
| 80 return -1; | |
| 81 } | |
| 82 | |
| 83 ScopedResource fileref_resource( | |
| 84 ppapi(), ppapi()->GetFileRefInterface()->Create(filesystem_resource_, | |
| 85 path.Join().c_str())); | |
| 86 if (!fileref_resource.pp_resource()) { | |
| 87 errno = EINVAL; | |
| 88 return -1; | |
| 89 } | |
| 90 | |
| 91 int32_t result = ppapi()->GetFileRefInterface()->Delete( | |
| 92 fileref_resource.pp_resource(), | |
| 93 PP_BlockUntilComplete()); | |
| 94 if (result != PP_OK) { | |
| 95 errno = PPErrorToErrno(result); | |
| 96 return -1; | |
| 97 } | |
| 98 | |
| 99 return 0; | |
| 100 } | |
| 101 | |
| 102 | |
| 103 MountHtml5Fs::MountHtml5Fs() | |
| 104 : filesystem_resource_(0), | |
| 105 filesystem_open_(false) { | |
| 106 } | |
| 107 | |
| 108 bool MountHtml5Fs::Init(int dev, StringMap_t& args, PepperInterface* ppapi) { | |
| 109 if (!Mount::Init(dev, args, ppapi)) | |
| 110 return false; | |
| 111 | |
| 112 if (!ppapi) | |
| 113 return false; | |
| 114 | |
| 115 // Parse mount args. | |
| 116 PP_FileSystemType filesystem_type = PP_FILESYSTEMTYPE_LOCALPERSISTENT; | |
| 117 int64_t expected_size = 0; | |
| 118 for (StringMap_t::iterator iter = args.begin(), end = args.end(); iter != end; | |
| 119 ++iter) { | |
| 120 if (iter->first == "type") { | |
| 121 if (iter->second == "PERSISTENT") { | |
| 122 filesystem_type = PP_FILESYSTEMTYPE_LOCALPERSISTENT; | |
| 123 } else if (iter->second == "TEMPORARY") { | |
| 124 filesystem_type = PP_FILESYSTEMTYPE_LOCALTEMPORARY; | |
| 125 } | |
| 126 } else if (iter->first == "expected_size") { | |
| 127 expected_size = strtoull(iter->second.c_str(), NULL, 10); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 // Initialize filesystem. | |
| 132 filesystem_resource_ = ppapi->GetFileSystemInterface()->Create( | |
| 133 ppapi_->GetInstance(), filesystem_type); | |
| 134 | |
| 135 if (filesystem_resource_ == 0) | |
| 136 return false; | |
| 137 | |
| 138 // Open the filesystem. Don't block, this could be called from the main | |
| 139 // thread. | |
| 140 ppapi->GetFileSystemInterface()->Open(filesystem_resource_, expected_size, | |
| 141 PP_MakeCompletionCallback(&MountHtml5Fs::FilesystemOpenCallbackThunk, | |
| 142 this)); | |
| 143 | |
| 144 return true; | |
| 145 } | |
| 146 | |
| 147 void MountHtml5Fs::Destroy() { | |
| 148 ppapi_->ReleaseResource(filesystem_resource_); | |
| 149 } | |
| 150 | |
| 151 bool MountHtml5Fs::IsFilesystemOpen() { | |
| 152 AutoLock lock(&lock_); | |
| 153 return filesystem_open_; | |
| 154 } | |
| 155 | |
| 156 // static | |
| 157 void MountHtml5Fs::FilesystemOpenCallbackThunk(void* user_data, | |
| 158 int32_t result) { | |
| 159 MountHtml5Fs* self = static_cast<MountHtml5Fs*>(user_data); | |
| 160 self->FilesystemOpenCallback(result); | |
| 161 } | |
| 162 | |
| 163 void MountHtml5Fs::FilesystemOpenCallback(int32_t result) { | |
| 164 AutoLock lock(&lock_); | |
| 165 filesystem_open_ = result == PP_OK; | |
| 166 } | |
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