Atmosphere/libraries/libstratosphere/source/fssrv/impl/fssrv_program_registry_manager.cpp
2022-02-21 15:17:17 -08:00

105 lines
3.9 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>
#include "fssrv_program_registry_manager.hpp"
namespace ams::fssrv::impl {
Result ProgramRegistryManager::RegisterProgram(u64 process_id, u64 program_id, u8 storage_id, const void *data, s64 data_size, const void *desc, s64 desc_size) {
/* Allocate a new node. */
std::unique_ptr<ProgramInfoNode> new_node(new ProgramInfoNode());
R_UNLESS(new_node != nullptr, fs::ResultAllocationFailureInProgramRegistryManagerA());
/* Create a new program info. */
{
/* Allocate the new info. */
auto new_info = fssystem::AllocateShared<ProgramInfo>(process_id, program_id, storage_id, data, data_size, desc, desc_size);
R_UNLESS(new_info != nullptr, fs::ResultAllocationFailureInProgramRegistryManagerA());
/* Set the info in the node. */
new_node->program_info = std::move(new_info);
}
/* Acquire exclusive access to the registry. */
std::scoped_lock lk(m_mutex);
/* Check that the process isn't already in the registry. */
for (const auto &node : m_program_info_list) {
R_UNLESS(!node.program_info->Contains(process_id), fs::ResultInvalidArgument());
}
/* Add the node to the registry. */
m_program_info_list.push_back(*new_node.release());
return ResultSuccess();
}
Result ProgramRegistryManager::UnregisterProgram(u64 process_id) {
/* Acquire exclusive access to the registry. */
std::scoped_lock lk(m_mutex);
/* Try to find and remove the process's node. */
for (auto &node : m_program_info_list) {
if (node.program_info->Contains(process_id)) {
m_program_info_list.erase(m_program_info_list.iterator_to(node));
delete std::addressof(node);
return ResultSuccess();
}
}
/* We couldn't find/unregister the process's node. */
return fs::ResultInvalidArgument();
}
Result ProgramRegistryManager::GetProgramInfo(std::shared_ptr<ProgramInfo> *out, u64 process_id) {
/* Acquire exclusive access to the registry. */
std::scoped_lock lk(m_mutex);
/* Check if we're getting permissions for an initial program. */
if (IsInitialProgram(process_id)) {
*out = ProgramInfo::GetProgramInfoForInitialProcess();
return ResultSuccess();
}
/* Find a matching node. */
for (const auto &node : m_program_info_list) {
if (node.program_info->Contains(process_id)) {
*out = node.program_info;
return ResultSuccess();
}
}
/* We didn't find the program info. */
return fs::ResultProgramInfoNotFound();
}
Result ProgramRegistryManager::GetProgramInfoByProgramId(std::shared_ptr<ProgramInfo> *out, u64 program_id) {
/* Acquire exclusive access to the registry. */
std::scoped_lock lk(m_mutex);
/* Find a matching node. */
for (const auto &node : m_program_info_list) {
if (node.program_info->GetProgramIdValue() == program_id) {
*out = node.program_info;
return ResultSuccess();
}
}
/* We didn't find the program info. */
return fs::ResultProgramInfoNotFound();
}
}