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Atmosphere/libraries/libstratosphere/source/fssystem/fssystem_external_code.cpp
2022-03-26 00:14:36 -07:00

93 lines
2.9 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
namespace ams::fssystem {
#if defined(ATMOSPHERE_BOARD_NINTENDO_NX)
namespace {
constexpr inline size_t MaxExternalCodeFileSystem = 0x10;
util::BoundedMap<ncm::ProgramId, fs::RemoteFileSystem, MaxExternalCodeFileSystem> g_ecs_map;
util::BoundedMap<ncm::ProgramId, os::NativeHandle, MaxExternalCodeFileSystem> g_hnd_map;
}
fs::fsa::IFileSystem *GetExternalCodeFileSystem(ncm::ProgramId program_id) {
/* Return a fs from the map if one exists. */
if (auto *fs = g_ecs_map.Find(program_id); fs != nullptr) {
return fs;
}
/* Otherwise, we may have a handle. */
if (auto *hnd = g_hnd_map.Find(program_id); hnd != nullptr) {
/* Create a service using libnx bindings. */
Service srv;
serviceCreate(std::addressof(srv), *hnd);
g_hnd_map.Remove(program_id);
/* Create a remote filesystem. */
const FsFileSystem fs = { srv };
g_ecs_map.Emplace(program_id, fs);
/* Return the created filesystem. */
return g_ecs_map.Find(program_id);
}
/* Otherwise, we have no filesystem. */
return nullptr;
}
Result CreateExternalCode(os::NativeHandle *out, ncm::ProgramId program_id) {
/* Create a handle pair. */
os::NativeHandle server, client;
R_TRY(svc::CreateSession(std::addressof(server), std::addressof(client), false, 0));
/* Insert the handle into the map. */
g_hnd_map.Emplace(program_id, client);
*out = server;
R_SUCCEED();
}
void DestroyExternalCode(ncm::ProgramId program_id) {
g_ecs_map.Remove(program_id);
if (auto *hnd = g_hnd_map.Find(program_id); hnd != nullptr) {
os::CloseNativeHandle(*hnd);
g_hnd_map.Remove(program_id);
}
}
#else
fs::fsa::IFileSystem *GetExternalCodeFileSystem(ncm::ProgramId program_id) {
AMS_UNUSED(program_id);
return nullptr;
}
Result CreateExternalCode(os::NativeHandle *out, ncm::ProgramId program_id) {
AMS_UNUSED(out, program_id);
R_THROW(fs::ResultNotImplemented());
}
void DestroyExternalCode(ncm::ProgramId program_id) {
AMS_UNUSED(program_id);
}
#endif
}