mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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112 lines
4.6 KiB
C++
112 lines
4.6 KiB
C++
/*
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* Copyright (c) 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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#include "impl/fs_file_system_service_object_adapter.hpp"
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#include "impl/fs_file_system_proxy_service_object.hpp"
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namespace ams::fs {
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namespace {
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class ContentStorageCommonMountNameGenerator : public fsa::ICommonMountNameGenerator, public impl::Newable {
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private:
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const ContentStorageId id;
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public:
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explicit ContentStorageCommonMountNameGenerator(ContentStorageId i) : id(i) { /* ... */ }
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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 = util::Strnlen(GetContentStorageMountName(id), MountNameLengthMax) + 2;
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AMS_ABORT_UNLESS(dst_size >= needed_size);
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/* Generate the name. */
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const auto size = util::SNPrintf(dst, dst_size, "%s:", GetContentStorageMountName(id));
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AMS_ASSERT(static_cast<size_t>(size) == needed_size - 1);
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AMS_UNUSED(size);
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return ResultSuccess();
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}
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};
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}
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const char *GetContentStorageMountName(ContentStorageId id) {
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switch (id) {
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case ContentStorageId::System: return impl::ContentStorageSystemMountName;
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case ContentStorageId::User: return impl::ContentStorageUserMountName;
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case ContentStorageId::SdCard: return impl::ContentStorageSdCardMountName;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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Result MountContentStorage(ContentStorageId id) {
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return MountContentStorage(GetContentStorageMountName(id), id);
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}
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Result MountContentStorage(const char *name, ContentStorageId id) {
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auto mount_impl = [=]() -> Result {
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/* Validate the mount name. */
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R_TRY(impl::CheckMountNameAllowingReserved(name));
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/* It can take some time for the system partition to be ready (if it's on the SD card). */
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/* Thus, we will retry up to 10 times, waiting one second each time. */
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constexpr size_t MaxRetries = 10;
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constexpr auto RetryInterval = TimeSpan::FromSeconds(1);
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/* Mount the content storage */
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auto fsp = impl::GetFileSystemProxyServiceObject();
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sf::SharedPointer<fssrv::sf::IFileSystem> fs;
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for (size_t i = 0; i < MaxRetries; i++) {
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/* Try to open the filesystem. */
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R_TRY_CATCH(fsp->OpenContentStorageFileSystem(std::addressof(fs), static_cast<u32>(id))) {
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R_CATCH(fs::ResultSystemPartitionNotReady) {
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if (i < MaxRetries - 1) {
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os::SleepThread(RetryInterval);
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continue;
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} else {
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R_THROW(fs::ResultSystemPartitionNotReady());
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}
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}
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} R_END_TRY_CATCH;
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/* The filesystem was opened successfully. */
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break;
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}
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/* Allocate a new filesystem wrapper. */
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auto fsa = std::make_unique<impl::FileSystemServiceObjectAdapter>(std::move(fs));
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R_UNLESS(fsa != nullptr, fs::ResultAllocationFailureInContentStorageA());
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/* Allocate a new mountname generator. */
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auto generator = std::make_unique<ContentStorageCommonMountNameGenerator>(id);
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R_UNLESS(generator != nullptr, fs::ResultAllocationFailureInContentStorageB());
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/* Register. */
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R_RETURN(fsa::Register(name, std::move(fsa), std::move(generator)));
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};
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/* Perform the mount. */
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AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_SYSTEM_MOUNT(mount_impl(), name, AMS_FS_IMPL_ACCESS_LOG_FORMAT_MOUNT_CONTENT_STORAGE(name, id)));
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/* Enable access logging. */
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AMS_FS_IMPL_ACCESS_LOG_SYSTEM_FS_ACCESSOR_ENABLE(name);
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R_SUCCEED();
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}
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}
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