mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-15 00:16:48 +00:00
87 lines
3.8 KiB
C++
87 lines
3.8 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "fsa/fs_mount_utils.hpp"
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namespace ams::fs {
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namespace {
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const char *GetGameCardMountNameSuffix(GameCardPartition which) {
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switch (which) {
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case GameCardPartition::Update: return impl::GameCardFileSystemMountNameUpdateSuffix;
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case GameCardPartition::Normal: return impl::GameCardFileSystemMountNameNormalSuffix;
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case GameCardPartition::Secure: return impl::GameCardFileSystemMountNameSecureSuffix;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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class GameCardCommonMountNameGenerator : public fsa::ICommonMountNameGenerator, public impl::Newable {
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private:
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const GameCardHandle handle;
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const GameCardPartition partition;
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public:
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explicit GameCardCommonMountNameGenerator(GameCardHandle h, GameCardPartition p) : handle(h), partition(p) { /* ... */ }
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virtual Result GenerateCommonMountName(char *dst, size_t dst_size) override {
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/* Determine how much space we need. */
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const size_t needed_size = strnlen(impl::GameCardFileSystemMountName, MountNameLengthMax) + strnlen(GetGameCardMountNameSuffix(this->partition), MountNameLengthMax) + sizeof(GameCardHandle) * 2 + 2;
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AMS_ABORT_UNLESS(dst_size >= needed_size);
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/* Generate the name. */
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auto size = util::SNPrintf(dst, dst_size, "%s%s%08x:", impl::GameCardFileSystemMountName, GetGameCardMountNameSuffix(this->partition), this->handle);
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AMS_ASSERT(static_cast<size_t>(size) == needed_size - 1);
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return ResultSuccess();
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}
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};
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}
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Result GetGameCardHandle(GameCardHandle *out) {
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/* TODO: fs::DeviceOperator */
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/* Open a DeviceOperator. */
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::FsDeviceOperator d;
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R_TRY(fsOpenDeviceOperator(std::addressof(d)));
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ON_SCOPE_EXIT { fsDeviceOperatorClose(std::addressof(d)); };
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/* Get the handle. */
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static_assert(sizeof(GameCardHandle) == sizeof(::FsGameCardHandle));
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return fsDeviceOperatorGetGameCardHandle(std::addressof(d), reinterpret_cast<::FsGameCardHandle *>(out));
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}
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Result MountGameCardPartition(const char *name, GameCardHandle handle, GameCardPartition partition) {
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/* Validate the mount name. */
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R_TRY(impl::CheckMountNameAllowingReserved(name));
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/* Open gamecard filesystem. This uses libnx bindings. */
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::FsFileSystem fs;
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const ::FsGameCardHandle _hnd = {handle};
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R_TRY(fsOpenGameCardFileSystem(std::addressof(fs), std::addressof(_hnd), static_cast<::FsGameCardPartition>(partition)));
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/* Allocate a new filesystem wrapper. */
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auto fsa = std::make_unique<RemoteFileSystem>(fs);
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R_UNLESS(fsa != nullptr, fs::ResultAllocationFailureInGameCardC());
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/* Allocate a new mountname generator. */
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auto generator = std::make_unique<GameCardCommonMountNameGenerator>(handle, partition);
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R_UNLESS(generator != nullptr, fs::ResultAllocationFailureInGameCardD());
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/* Register. */
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return fsa::Register(name, std::move(fsa), std::move(generator));
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}
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}
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