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Atmosphere/libraries/libstratosphere/source/fs/fsa/fs_user_filesystem.cpp
2021-10-06 23:22:54 -07:00

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/*
* 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 "fs_filesystem_accessor.hpp"
#include "fs_file_accessor.hpp"
#include "fs_directory_accessor.hpp"
#include "fs_mount_utils.hpp"
#include "fs_user_mount_table.hpp"
namespace ams::fs {
Result CreateFile(const char *path, s64 size) {
return CreateFile(path, size, 0);
}
Result CreateFile(const char* path, s64 size, int option) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->CreateFile(sub_path, size, option), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH_AND_SIZE, path, size));
return ResultSuccess();
}
Result DeleteFile(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->DeleteFile(sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
return ResultSuccess();
}
Result CreateDirectory(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->CreateDirectory(sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
return ResultSuccess();
}
Result DeleteDirectory(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->DeleteDirectory(sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
return ResultSuccess();
}
Result DeleteDirectoryRecursively(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->DeleteDirectoryRecursively(sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
return ResultSuccess();
}
Result RenameFile(const char *old_path, const char *new_path) {
impl::FileSystemAccessor *old_accessor;
impl::FileSystemAccessor *new_accessor;
const char *old_sub_path;
const char *new_sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(old_accessor), std::addressof(old_sub_path), old_path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(new_accessor), std::addressof(new_sub_path), new_path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
auto rename_impl = [=]() -> Result {
R_UNLESS(old_accessor == new_accessor, fs::ResultRenameToOtherFileSystem());
R_TRY(old_accessor->RenameFile(old_sub_path, new_sub_path));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(rename_impl(), nullptr, old_accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
return ResultSuccess();
}
Result RenameDirectory(const char *old_path, const char *new_path) {
impl::FileSystemAccessor *old_accessor;
impl::FileSystemAccessor *new_accessor;
const char *old_sub_path;
const char *new_sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(old_accessor), std::addressof(old_sub_path), old_path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(new_accessor), std::addressof(new_sub_path), new_path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
auto rename_impl = [=]() -> Result {
R_UNLESS(old_accessor == new_accessor, fs::ResultRenameToOtherFileSystem());
R_TRY(old_accessor->RenameDirectory(old_sub_path, new_sub_path));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(rename_impl(), nullptr, old_accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_RENAME, old_path, new_path));
return ResultSuccess();
}
Result GetEntryType(DirectoryEntryType *out, const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->GetEntryType(out, sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_GET_ENTRY_TYPE(out, path)));
return ResultSuccess();
}
Result OpenFile(FileHandle *out_file, const char *path, int mode) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH_AND_OPEN_MODE, path, static_cast<u32>(mode)));
std::unique_ptr<impl::FileAccessor> file_accessor;
auto open_impl = [&]() -> Result {
R_UNLESS(out_file != nullptr, fs::ResultNullptrArgument());
R_TRY(accessor->OpenFile(std::addressof(file_accessor), sub_path, static_cast<OpenMode>(mode)));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(open_impl(), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH_AND_OPEN_MODE, path, static_cast<u32>(mode)));
out_file->handle = file_accessor.release();
return ResultSuccess();
}
Result OpenDirectory(DirectoryHandle *out_dir, const char *path, int mode) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH_AND_OPEN_MODE, path, static_cast<u32>(mode)));
std::unique_ptr<impl::DirectoryAccessor> dir_accessor;
auto open_impl = [&]() -> Result {
R_UNLESS(out_dir != nullptr, fs::ResultNullptrArgument());
R_TRY(accessor->OpenDirectory(std::addressof(dir_accessor), sub_path, static_cast<OpenDirectoryMode>(mode)));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(open_impl(), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH_AND_OPEN_MODE, path, static_cast<u32>(mode)));
out_dir->handle = dir_accessor.release();
return ResultSuccess();
}
Result CleanDirectoryRecursively(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path), AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(accessor->CleanDirectoryRecursively(sub_path), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_PATH, path));
return ResultSuccess();
}
Result GetFreeSpaceSize(s64 *out, const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path = nullptr;
/* Get the accessor. */
auto find_impl = [&]() -> Result {
R_UNLESS(out != nullptr, fs::ResultNullptrArgument());
R_UNLESS(path != nullptr, fs::ResultNullptrArgument());
if (impl::IsValidMountName(path)) {
R_TRY(impl::Find(std::addressof(accessor), path));
} else {
R_TRY(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path));
}
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(find_impl(), AMS_FS_IMPL_ACCESS_LOG_FORMAT_GET_SPACE_SIZE(out, path)));
/* Get the space size. */
auto get_size_impl = [&]() -> Result {
R_UNLESS(sub_path == nullptr || std::strcmp(sub_path, "/") == 0, fs::ResultInvalidMountName());
R_TRY(accessor->GetFreeSpaceSize(out, "/"));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(get_size_impl(), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_GET_SPACE_SIZE(out, path)));
return ResultSuccess();
}
Result GetTotalSpaceSize(s64 *out, const char *path) {
/* NOTE: Nintendo does not do access logging here, and does not support mount-name instead of path. */
impl::FileSystemAccessor *accessor;
const char *sub_path = nullptr;
/* Get the accessor. */
auto find_impl = [&]() -> Result {
R_UNLESS(out != nullptr, fs::ResultNullptrArgument());
R_UNLESS(path != nullptr, fs::ResultNullptrArgument());
if (impl::IsValidMountName(path)) {
R_TRY(impl::Find(std::addressof(accessor), path));
} else {
R_TRY(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path));
}
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(find_impl(), AMS_FS_IMPL_ACCESS_LOG_FORMAT_GET_SPACE_SIZE(out, path)));
/* Get the space size. */
auto get_size_impl = [&]() -> Result {
R_UNLESS(sub_path == nullptr || std::strcmp(sub_path, "/") == 0, fs::ResultInvalidMountName());
R_TRY(accessor->GetTotalSpaceSize(out, "/"));
return ResultSuccess();
};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM(get_size_impl(), nullptr, accessor, AMS_FS_IMPL_ACCESS_LOG_FORMAT_GET_SPACE_SIZE(out, path)));
return ResultSuccess();
}
Result SetConcatenationFileAttribute(const char *path) {
impl::FileSystemAccessor *accessor;
const char *sub_path;
AMS_FS_R_TRY(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), path));
AMS_FS_R_TRY(accessor->QueryEntry(nullptr, 0, nullptr, 0, fsa::QueryId::SetConcatenationFileAttribute, sub_path));
return ResultSuccess();
}
Result OpenFile(FileHandle *out, std::unique_ptr<fsa::IFile> &&file, int mode) {
AMS_FS_R_UNLESS(out != nullptr, fs::ResultNullptrArgument());
auto file_accessor = std::make_unique<impl::FileAccessor>(std::move(file), nullptr, static_cast<OpenMode>(mode));
AMS_FS_R_UNLESS(file_accessor != nullptr, fs::ResultAllocationFailureInNew());
out->handle = file_accessor.release();
return ResultSuccess();
}
namespace {
Result CommitImpl(const char *mount_name, const char *func_name) {
impl::FileSystemAccessor *accessor{};
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_UNLESS_R_SUCCEEDED(impl::Find(std::addressof(accessor), mount_name), AMS_FS_IMPL_ACCESS_LOG_FORMAT_MOUNT, mount_name));
AMS_FS_R_TRY(AMS_FS_IMPL_ACCESS_LOG_FILESYSTEM_WITH_NAME(accessor->Commit(), nullptr, accessor, func_name, AMS_FS_IMPL_ACCESS_LOG_FORMAT_MOUNT, mount_name));
return ResultSuccess();
}
}
Result Commit(const char *mount_name) {
return CommitImpl(mount_name, AMS_CURRENT_FUNCTION_NAME);
}
Result CommitSaveData(const char *mount_name) {
return CommitImpl(mount_name, AMS_CURRENT_FUNCTION_NAME);
}
}