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card_image: Lazily load partitions in XCI

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This commit is contained in:
Zach Hilman 2019-09-22 21:50:29 -04:00
parent 3895f7e456
commit 3952c73aee
2 changed files with 41 additions and 26 deletions
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51
src/core/file_sys/card_image.cpp
View file

@ -31,7 +31,7 @@ constexpr std::array partition_names{
XCI::XCI(VirtualFile file_)
: file(std::move(file_)), program_nca_status{Loader::ResultStatus::ErrorXCIMissingProgramNCA},
partitions(partition_names.size()) {
partitions(partition_names.size()), partitions_raw(partition_names.size()) {
if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
status = Loader::ResultStatus::ErrorBadXCIHeader;
return;
@ -42,8 +42,10 @@ XCI::XCI(VirtualFile file_)
return;
}
PartitionFilesystem main_hfs(
std::make_shared<OffsetVfsFile>(file, header.hfs_size, header.hfs_offset));
PartitionFilesystem main_hfs(std::make_shared<OffsetVfsFile>(
file, file->GetSize() - header.hfs_offset, header.hfs_offset));
update_normal_partition_end = main_hfs.GetFileOffsets()["secure"];
if (main_hfs.GetStatus() != Loader::ResultStatus::Success) {
status = main_hfs.GetStatus();
@ -55,9 +57,7 @@ XCI::XCI(VirtualFile file_)
const auto partition_idx = static_cast<std::size_t>(partition);
auto raw = main_hfs.GetFile(partition_names[partition_idx]);
if (raw != nullptr) {
partitions[partition_idx] = std::make_shared<PartitionFilesystem>(std::move(raw));
}
partitions_raw[static_cast<std::size_t>(partition)] = raw;
}
secure_partition = std::make_shared<NSP>(
@ -71,13 +71,7 @@ XCI::XCI(VirtualFile file_)
program_nca_status = Loader::ResultStatus::ErrorXCIMissingProgramNCA;
}
auto result = AddNCAFromPartition(XCIPartition::Update);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
}
result = AddNCAFromPartition(XCIPartition::Normal);
auto result = AddNCAFromPartition(XCIPartition::Normal);
if (result != Loader::ResultStatus::Success) {
status = result;
return;
@ -104,27 +98,44 @@ Loader::ResultStatus XCI::GetProgramNCAStatus() const {
return program_nca_status;
}
VirtualDir XCI::GetPartition(XCIPartition partition) const {
VirtualDir XCI::GetPartition(XCIPartition partition) {
const auto id = static_cast<std::size_t>(partition);
if (partitions[id] == nullptr && partitions_raw[id] != nullptr) {
partitions[id] = std::make_shared<PartitionFilesystem>(partitions_raw[id]);
}
return partitions[static_cast<std::size_t>(partition)];
}
std::vector<VirtualDir> XCI::GetPartitions() {
std::vector<VirtualDir> out;
for (const auto& id :
{XCIPartition::Update, XCIPartition::Normal, XCIPartition::Secure, XCIPartition::Logo}) {
const auto part = GetPartition(id);
if (part != nullptr) {
out.push_back(part);
}
}
return out;
}
std::shared_ptr<NSP> XCI::GetSecurePartitionNSP() const {
return secure_partition;
}
VirtualDir XCI::GetSecurePartition() const {
VirtualDir XCI::GetSecurePartition() {
return GetPartition(XCIPartition::Secure);
}
VirtualDir XCI::GetNormalPartition() const {
VirtualDir XCI::GetNormalPartition() {
return GetPartition(XCIPartition::Normal);
}
VirtualDir XCI::GetUpdatePartition() const {
VirtualDir XCI::GetUpdatePartition() {
return GetPartition(XCIPartition::Update);
}
VirtualDir XCI::GetLogoPartition() const {
VirtualDir XCI::GetLogoPartition() {
return GetPartition(XCIPartition::Logo);
}
@ -201,7 +212,7 @@ std::array<u8, 0x200> XCI::GetCertificate() const {
Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
const auto partition_index = static_cast<std::size_t>(part);
const auto& partition = partitions[partition_index];
const auto partition = GetPartition(part);
if (partition == nullptr) {
return Loader::ResultStatus::ErrorXCIMissingPartition;
@ -232,7 +243,7 @@ Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
return Loader::ResultStatus::Success;
}
u8 XCI::GetFormatVersion() const {
u8 XCI::GetFormatVersion() {
return GetLogoPartition() == nullptr ? 0x1 : 0x2;
}
} // namespace FileSys

16
src/core/file_sys/card_image.h
View file

@ -81,14 +81,17 @@ public:
Loader::ResultStatus GetStatus() const;
Loader::ResultStatus GetProgramNCAStatus() const;
u8 GetFormatVersion() const;
u8 GetFormatVersion();
VirtualDir GetPartition(XCIPartition partition);
std::vector<VirtualDir> GetPartitions();
VirtualDir GetPartition(XCIPartition partition) const;
std::shared_ptr<NSP> GetSecurePartitionNSP() const;
VirtualDir GetSecurePartition() const;
VirtualDir GetNormalPartition() const;
VirtualDir GetUpdatePartition() const;
VirtualDir GetLogoPartition() const;
VirtualDir GetSecurePartition();
VirtualDir GetNormalPartition();
VirtualDir GetUpdatePartition();
VirtualDir GetLogoPartition();
u64 GetProgramTitleID() const;
u32 GetSystemUpdateVersion();
@ -123,6 +126,7 @@ private:
Loader::ResultStatus program_nca_status;
std::vector<VirtualDir> partitions;
std::vector<VirtualFile> partitions_raw;
std::shared_ptr<NSP> secure_partition;
std::shared_ptr<NCA> program;
std::vector<std::shared_ptr<NCA>> ncas;