mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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148 lines
4.6 KiB
C++
148 lines
4.6 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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#if defined(ATMOSPHERE_IS_STRATOSPHERE)
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#include <stratosphere.hpp>
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#elif defined(ATMOSPHERE_IS_MESOSPHERE)
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#include <mesosphere.hpp>
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#elif defined(ATMOSPHERE_IS_EXOSPHERE)
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#include <exosphere.hpp>
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#else
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#include <vapours.hpp>
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#endif
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#include "prfile2_pdm_disk_set.hpp"
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namespace ams::prfile2::pdm::disk {
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pdm::Error OpenDisk(InitDisk *init_disk_table, HandleType *out) {
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/* Check the arguments. */
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if (out == nullptr || init_disk_table == nullptr || init_disk_table->function == nullptr) {
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return pdm::Error_InvalidParameter;
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}
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/* Find a free disk holder. */
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DiskHolder *holder = nullptr;
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for (auto &h : impl::g_disk_set.disk_holders) {
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if (h.disk == nullptr) {
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holder = std::addressof(h);
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break;
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}
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}
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if (holder == nullptr) {
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return pdm::Error_NotExistFreeDiskStruct;
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}
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/* Find a free disk. */
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Disk *disk = nullptr;
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for (auto &d : impl::g_disk_set.disks) {
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if (!d.IsOpen()) {
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disk = std::addressof(d);
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break;
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}
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}
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if (disk == nullptr) {
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return pdm::Error_NotExistFreeDiskStruct;
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}
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const auto disk_id = disk - impl::g_disk_set.disks;
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/* Call the disk initialze function. */
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init_disk_table->function(std::addressof(disk->disk_table), init_disk_table->ui_ext);
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/* Set the disk as open .*/
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disk->SetOpen(true);
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/* Set the init disk table. */
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disk->init_disk_table = init_disk_table;
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/* Note the opened disk. */
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++impl::g_disk_set.num_allocated_disks;
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/* Increment the disk's signature. */
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disk->signature = static_cast<u16>(disk->signature + 1);
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/* Increment the disk's open count. */
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++disk->open_count;
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/* Set the disk in the holder. */
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holder->signature = disk->signature;
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holder->disk = disk;
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/* Set the output handle. */
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*out = ConstructDiskHandle(disk_id, disk->signature);
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/* If this was the first opening for the disk, initialize it. */
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if (disk->open_count == 1) {
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if (auto err = disk->disk_table.function_table->initialize(*out); err != pdm::Error_Ok) {
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/* Close the disk. */
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--disk->open_count;
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disk->SetOpen(false);
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--impl::g_disk_set.num_allocated_disks;
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/* Reset the holder. */
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holder->disk = nullptr;
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return pdm::Error_DriverError;
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}
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}
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return pdm::Error_Ok;
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}
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pdm::Error CloseDisk(HandleType handle) {
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/* Get the disk. */
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Disk *disk = GetDisk(handle);
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if (disk == nullptr) {
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return pdm::Error_InvalidParameter;
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}
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/* Check that the disk is open and unlocked. */
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if (!disk->IsOpen()) {
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return pdm::Error_StateClosed;
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}
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if (disk->IsLocked()) {
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return pdm::Error_StateLocked;
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}
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/* Get the disk holder. */
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DiskHolder *holder = GetDiskHolder(handle);
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if (holder == nullptr) {
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return pdm::Error_InvalidParameter;
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}
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/* Close the disk. */
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if (disk->open_count == 1) {
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/* Finalize the disk. */
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if (auto err = disk->disk_table.function_table->finalize(handle); err != pdm::Error_Ok) {
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if (auto part = disk->current_partition_handle; part != InvalidHandle) {
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part::SetDriverErrorCode(part, err);
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}
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return pdm::Error_DriverError;
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}
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/* Set the disk as closed. */
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disk->SetOpen(false);
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--impl::g_disk_set.num_allocated_disks;
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/* Clear the disk holder. */
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holder->disk = nullptr;
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}
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/* Decrement the disk's open count. */
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--disk->open_count;
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return pdm::Error_Ok;
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}
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}
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