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/* Copyright (c) 2012 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.
*/
#include "nacl_mounts/mount_html5fs.h"
#include <errno.h>
#include <ppapi/c/pp_completion_callback.h>
#include <ppapi/c/pp_errors.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include "nacl_mounts/mount_node_html5fs.h"
#include "utils/auto_lock.h"
namespace {
void ReleaseAndNullNode(MountNode** node) {
if (*node)
(*node)->Release();
*node = NULL;
}
#if defined(WIN32)
int64_t strtoull(const char* nptr, char** endptr, int base) {
return _strtoui64(nptr, endptr, base);
}
#endif
} // namespace
MountNode *MountHtml5Fs::Open(const Path& path, int mode) {
if (!IsFilesystemOpen())
return NULL;
PP_Resource fileref = ppapi()->GetFileRefInterface()->Create(
filesystem_resource_, path.Join().c_str());
if (!fileref)
return NULL;
// TODO(binji): Are these needed?
const int ino = 0;
const int USR_ID = 1;
const int GRP_ID = 2;
MountNodeHtml5Fs* node = new MountNodeHtml5Fs(this, ino, dev_, fileref);
if (!node->Init(mode, USR_ID, GRP_ID)) {
node->Release();
return NULL;
}
return node;
}
int MountHtml5Fs::Close(MountNode* node) {
AutoLock lock(&lock_);
node->Close();
node->Release();
return 0;
}
int MountHtml5Fs::Unlink(const Path& path) {
return Remove(path);
}
int MountHtml5Fs::Mkdir(const Path& path, int permissions) {
if (!IsFilesystemOpen()) {
errno = EINVAL;
return -1;
}
PP_Resource fileref_resource = ppapi()->GetFileRefInterface()->Create(
filesystem_resource_, path.Join().c_str());
if (!fileref_resource) {
errno = EINVAL;
return -1;
}
ScopedResource scoped_resource(ppapi_, fileref_resource,
ScopedResource::NoAddRef());
int32_t result = ppapi()->GetFileRefInterface()->MakeDirectory(
fileref_resource, PP_FALSE, PP_BlockUntilComplete());
if (result != PP_OK) {
errno = PPErrorToErrno(result);
return -1;
}
return 0;
}
int MountHtml5Fs::Rmdir(const Path& path) {
return Remove(path);
}
int MountHtml5Fs::Remove(const Path& path) {
if (!IsFilesystemOpen()) {
errno = EINVAL;
return -1;
}
PP_Resource fileref_resource = ppapi()->GetFileRefInterface()->Create(
filesystem_resource_, path.Join().c_str());
if (!fileref_resource) {
errno = EINVAL;
return -1;
}
ScopedResource scoped_resource(ppapi_, fileref_resource,
ScopedResource::NoAddRef());
int32_t result = ppapi()->GetFileRefInterface()->Delete(
fileref_resource,
PP_BlockUntilComplete());
if (result != PP_OK) {
errno = PPErrorToErrno(result);
return -1;
}
return 0;
}
MountHtml5Fs::MountHtml5Fs()
: filesystem_resource_(0),
filesystem_open_(false) {
}
bool MountHtml5Fs::Init(int dev, StringMap_t& args, PepperInterface* ppapi) {
if (!Mount::Init(dev, args, ppapi))
return false;
if (!ppapi)
return false;
// Parse mount args.
PP_FileSystemType filesystem_type = PP_FILESYSTEMTYPE_LOCALPERSISTENT;
int64_t expected_size = 0;
for (StringMap_t::iterator iter = args.begin(), end = args.end(); iter != end;
++iter) {
if (iter->first == "type") {
if (iter->second == "PERSISTENT") {
filesystem_type = PP_FILESYSTEMTYPE_LOCALPERSISTENT;
} else if (iter->second == "TEMPORARY") {
filesystem_type = PP_FILESYSTEMTYPE_LOCALTEMPORARY;
}
} else if (iter->first == "expected_size") {
expected_size = strtoull(iter->second.c_str(), NULL, 10);
}
}
// Initialize filesystem.
filesystem_resource_ = ppapi->GetFileSystemInterface()->Create(
ppapi_->GetInstance(), filesystem_type);
if (filesystem_resource_ == 0)
return false;
// Open the filesystem. Don't block, this could be called from the main
// thread.
ppapi->GetFileSystemInterface()->Open(filesystem_resource_, expected_size,
PP_MakeCompletionCallback(&MountHtml5Fs::FilesystemOpenCallbackThunk,
this));
return true;
}
void MountHtml5Fs::Destroy() {
ppapi_->ReleaseResource(filesystem_resource_);
}
bool MountHtml5Fs::IsFilesystemOpen() {
AutoLock lock(&lock_);
return filesystem_open_;
}
// static
void MountHtml5Fs::FilesystemOpenCallbackThunk(void* user_data,
int32_t result) {
MountHtml5Fs* self = static_cast<MountHtml5Fs*>(user_data);
self->FilesystemOpenCallback(result);
}
void MountHtml5Fs::FilesystemOpenCallback(int32_t result) {
AutoLock lock(&lock_);
filesystem_open_ = result == PP_OK;
}
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