122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/**
|
|
******************************************************************************
|
|
* Xenia : Xbox 360 Emulator Research Project *
|
|
******************************************************************************
|
|
* Copyright 2013 Ben Vanik. All rights reserved. *
|
|
* Released under the BSD license - see LICENSE in the root for more details. *
|
|
******************************************************************************
|
|
*/
|
|
|
|
#include <xenia/kernel/fs/devices/disc_image_entry.h>
|
|
|
|
#include <algorithm>
|
|
|
|
#include <xenia/kernel/fs/gdfx.h>
|
|
#include <xenia/kernel/fs/devices/disc_image_file.h>
|
|
|
|
namespace xe {
|
|
namespace kernel {
|
|
namespace fs {
|
|
|
|
class DiscImageMemoryMapping : public MemoryMapping {
|
|
public:
|
|
DiscImageMemoryMapping(uint8_t* address, size_t length,
|
|
poly::MappedMemory* mmap)
|
|
: MemoryMapping(address, length), mmap_(mmap) {}
|
|
|
|
virtual ~DiscImageMemoryMapping() {}
|
|
|
|
private:
|
|
poly::MappedMemory* mmap_;
|
|
};
|
|
|
|
DiscImageEntry::DiscImageEntry(Type type, Device* device, const char* path,
|
|
poly::MappedMemory* mmap, GDFXEntry* gdfx_entry)
|
|
: gdfx_entry_(gdfx_entry),
|
|
gdfx_entry_iterator_(gdfx_entry->children.end()),
|
|
mmap_(mmap),
|
|
Entry(type, device, path) {}
|
|
|
|
DiscImageEntry::~DiscImageEntry() {}
|
|
|
|
X_STATUS DiscImageEntry::QueryInfo(XFileInfo* out_info) {
|
|
assert_not_null(out_info);
|
|
out_info->creation_time = 0;
|
|
out_info->last_access_time = 0;
|
|
out_info->last_write_time = 0;
|
|
out_info->change_time = 0;
|
|
out_info->allocation_size = 2048;
|
|
out_info->file_length = gdfx_entry_->size;
|
|
out_info->attributes = gdfx_entry_->attributes;
|
|
return X_STATUS_SUCCESS;
|
|
}
|
|
|
|
X_STATUS DiscImageEntry::QueryDirectory(XDirectoryInfo* out_info, size_t length,
|
|
const char* file_name, bool restart) {
|
|
assert_not_null(out_info);
|
|
|
|
if (restart == true && gdfx_entry_iterator_ != gdfx_entry_->children.end()) {
|
|
gdfx_entry_iterator_ = gdfx_entry_->children.end();
|
|
}
|
|
|
|
if (gdfx_entry_iterator_ == gdfx_entry_->children.end()) {
|
|
gdfx_entry_iterator_ = gdfx_entry_->children.begin();
|
|
if (gdfx_entry_iterator_ == gdfx_entry_->children.end()) {
|
|
return X_STATUS_UNSUCCESSFUL;
|
|
}
|
|
} else {
|
|
++gdfx_entry_iterator_;
|
|
if (gdfx_entry_iterator_ == gdfx_entry_->children.end()) {
|
|
return X_STATUS_UNSUCCESSFUL;
|
|
}
|
|
}
|
|
|
|
auto end = (uint8_t*)out_info + length;
|
|
|
|
auto entry = *gdfx_entry_iterator_;
|
|
auto entry_name = entry->name;
|
|
|
|
if (((uint8_t*)&out_info->file_name[0]) + entry_name.size() > end) {
|
|
gdfx_entry_iterator_ = gdfx_entry_->children.end();
|
|
return X_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
out_info->next_entry_offset = 0;
|
|
out_info->file_index = 0xCDCDCDCD;
|
|
out_info->creation_time = 0;
|
|
out_info->last_access_time = 0;
|
|
out_info->last_write_time = 0;
|
|
out_info->change_time = 0;
|
|
out_info->end_of_file = entry->size;
|
|
out_info->allocation_size = 2048;
|
|
out_info->attributes = (X_FILE_ATTRIBUTES)entry->attributes;
|
|
out_info->file_name_length = static_cast<uint32_t>(entry_name.size());
|
|
memcpy(out_info->file_name, entry_name.c_str(), entry_name.size());
|
|
|
|
return X_STATUS_SUCCESS;
|
|
}
|
|
|
|
std::unique_ptr<MemoryMapping> DiscImageEntry::CreateMemoryMapping(
|
|
Mode map_mode, const size_t offset, const size_t length) {
|
|
if (map_mode != Mode::READ) {
|
|
// Only allow reads.
|
|
return nullptr;
|
|
}
|
|
|
|
size_t real_offset = gdfx_entry_->offset + offset;
|
|
size_t real_length =
|
|
length ? std::min(length, gdfx_entry_->size) : gdfx_entry_->size;
|
|
return std::make_unique<DiscImageMemoryMapping>(mmap_->data() + real_offset,
|
|
real_length, mmap_);
|
|
}
|
|
|
|
X_STATUS DiscImageEntry::Open(KernelState* kernel_state, Mode mode, bool async,
|
|
XFile** out_file) {
|
|
*out_file = new DiscImageFile(kernel_state, mode, this);
|
|
return X_STATUS_SUCCESS;
|
|
}
|
|
|
|
} // namespace fs
|
|
} // namespace kernel
|
|
} // namespace xe
|