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Code Issues Releases Activity

sf: properly support preservation of inline context

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This commit is contained in:
Michael Scire 2020-04-16 23:51:42 -07:00
parent 94ec9ae41b
commit d77fe98203
5 changed files with 148 additions and 0 deletions
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3
libraries/libstratosphere/include/stratosphere/sf.hpp
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@ -22,6 +22,9 @@
#include <stratosphere/sf/sf_service_object.hpp>
#include <stratosphere/sf/hipc/sf_hipc_server_session_manager.hpp>
#include <stratosphere/sf/cmif/sf_cmif_inline_context.hpp>
#include <stratosphere/sf/sf_fs_inline_context.hpp>
#include <stratosphere/sf/sf_out.hpp>
#include <stratosphere/sf/sf_buffers.hpp>
#include <stratosphere/sf/impl/sf_impl_command_serialization.hpp>

35
libraries/libstratosphere/include/stratosphere/sf/cmif/sf_cmif_inline_context.hpp Normal file
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@ -0,0 +1,35 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#pragma once
#include <stratosphere/sf/sf_common.hpp>
namespace ams::sf::cmif {
using InlineContext = u32;
InlineContext GetInlineContext();
InlineContext SetInlineContext(InlineContext ctx);
class ScopedInlineContextChanger {
private:
InlineContext prev_ctx;
public:
ALWAYS_INLINE explicit ScopedInlineContextChanger(InlineContext new_ctx) : prev_ctx(SetInlineContext(new_ctx)) { /* ... */ }
~ScopedInlineContextChanger() { SetInlineContext(this->prev_ctx); }
};
}

25
libraries/libstratosphere/include/stratosphere/sf/sf_fs_inline_context.hpp Normal file
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@ -0,0 +1,25 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#pragma once
#include <stratosphere/sf/sf_common.hpp>
namespace ams::sf {
u8 GetFsInlineContext();
u8 SetFsInlineContext(u8 ctx);
}

67
libraries/libstratosphere/source/sf/cmif/sf_cmif_inline_context.cpp Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2018-2020 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::sf {
namespace cmif {
namespace {
thread_local InlineContext g_inline_context;
ALWAYS_INLINE void OnSetInlineContext() {
/* Ensure that libnx receives the priority value. */
::fsSetPriority(static_cast<::FsPriority>(::ams::sf::GetFsInlineContext()));
}
}
InlineContext GetInlineContext() {
InlineContext ctx;
std::memcpy(std::addressof(ctx), std::addressof(::ams::sf::cmif::g_inline_context), sizeof(ctx));
return ctx;
}
InlineContext SetInlineContext(InlineContext ctx) {
ON_SCOPE_EXIT { OnSetInlineContext(); };
static_assert(sizeof(ctx) <= sizeof(g_inline_context));
InlineContext old_ctx;
std::memcpy(std::addressof(old_ctx), std::addressof(g_inline_context), sizeof(old_ctx));
std::memcpy(std::addressof(g_inline_context), std::addressof(ctx), sizeof(ctx));
return old_ctx;
}
}
u8 GetFsInlineContext() {
u8 ctx;
std::memcpy(std::addressof(ctx), std::addressof(cmif::g_inline_context), sizeof(ctx));
return ctx;
}
u8 SetFsInlineContext(u8 ctx) {
ON_SCOPE_EXIT { cmif::OnSetInlineContext(); };
static_assert(sizeof(ctx) <= sizeof(cmif::g_inline_context));
u8 old_ctx;
std::memcpy(std::addressof(old_ctx), std::addressof(cmif::g_inline_context), sizeof(old_ctx));
std::memcpy(std::addressof(cmif::g_inline_context), std::addressof(ctx), sizeof(ctx));
return old_ctx;
}
}

18
libraries/libstratosphere/source/sf/hipc/sf_hipc_server_session_manager.cpp
View file

@ -239,6 +239,24 @@ namespace ams::sf::hipc {
Result ServerSessionManager::ProcessRequestImpl(ServerSession *session, const cmif::PointerAndSize &in_message, const cmif::PointerAndSize &out_message) {
/* TODO: Inline context support, retrieve from raw data + 0xC. */
const auto cmif_command_type = GetCmifCommandType(in_message);
const auto GetInlineContext = [&]() -> cmif::InlineContext {
cmif::InlineContext ret = {};
switch (cmif_command_type) {
case CmifCommandType_RequestWithContext:
case CmifCommandType_ControlWithContext:
if (in_message.GetSize() >= 0x10) {
static_assert(sizeof(cmif::InlineContext) == 4);
std::memcpy(std::addressof(ret), static_cast<u8 *>(in_message.GetPointer()) + 0xC, sizeof(ret));
}
break;
default:
break;
}
return ret;
};
cmif::ScopedInlineContextChanger sicc(GetInlineContext());
switch (cmif_command_type) {
case CmifCommandType_Request:
case CmifCommandType_RequestWithContext: