mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-29 23:32:23 +00:00
320 lines
16 KiB
C++
320 lines
16 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 <mesosphere.hpp>
|
|
|
|
namespace ams::kern::svc {
|
|
|
|
#pragma GCC push_options
|
|
#pragma GCC optimize ("-O3")
|
|
|
|
/* ============================= Common ============================= */
|
|
|
|
namespace {
|
|
|
|
ALWAYS_INLINE Result SendSyncRequestImpl(uintptr_t message, size_t buffer_size, ams::svc::Handle session_handle) {
|
|
/* Get the client session. */
|
|
KScopedAutoObject session = GetCurrentProcess().GetHandleTable().GetObject<KClientSession>(session_handle);
|
|
R_UNLESS(session.IsNotNull(), svc::ResultInvalidHandle());
|
|
|
|
/* Get the parent, and persist a reference to it until we're done. */
|
|
KScopedAutoObject parent = session->GetParent();
|
|
MESOSPHERE_ASSERT(parent.IsNotNull());
|
|
|
|
/* Send the request. */
|
|
return session->SendSyncRequest(message, buffer_size);
|
|
}
|
|
|
|
ALWAYS_INLINE Result ReplyAndReceiveImpl(int32_t *out_index, uintptr_t message, size_t buffer_size, KPhysicalAddress message_paddr, KSynchronizationObject **objs, int32_t num_objects, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
/* Reply to the target, if one is specified. */
|
|
if (reply_target != ams::svc::InvalidHandle) {
|
|
KScopedAutoObject session = GetCurrentProcess().GetHandleTable().GetObject<KServerSession>(reply_target);
|
|
R_UNLESS(session.IsNotNull(), svc::ResultInvalidHandle());
|
|
|
|
/* If we fail to reply, we want to set the output index to -1. */
|
|
auto reply_idx_guard = SCOPE_GUARD { *out_index = -1; };
|
|
|
|
/* Send the reply. */
|
|
R_TRY(session->SendReply(message, buffer_size, message_paddr));
|
|
|
|
/* Cancel our guard. */
|
|
reply_idx_guard.Cancel();
|
|
}
|
|
|
|
/* Receive a message. */
|
|
{
|
|
/* Convert the timeout from nanoseconds to ticks. */
|
|
/* NOTE: Nintendo does not use this conversion logic in WaitSynchronization... */
|
|
s64 timeout;
|
|
if (timeout_ns > 0) {
|
|
const ams::svc::Tick offset_tick(TimeSpan::FromNanoSeconds(timeout_ns));
|
|
if (AMS_LIKELY(offset_tick > 0)) {
|
|
timeout = KHardwareTimer::GetTick() + offset_tick + 2;
|
|
if (AMS_UNLIKELY(timeout <= 0)) {
|
|
timeout = std::numeric_limits<s64>::max();
|
|
}
|
|
} else {
|
|
timeout = std::numeric_limits<s64>::max();
|
|
}
|
|
} else {
|
|
timeout = timeout_ns;
|
|
}
|
|
|
|
/* Wait for a message. */
|
|
while (true) {
|
|
/* Close any pending objects before we wait. */
|
|
GetCurrentThread().DestroyClosedObjects();
|
|
|
|
/* Wait for an object. */
|
|
s32 index;
|
|
Result result = KSynchronizationObject::Wait(std::addressof(index), objs, num_objects, timeout);
|
|
if (svc::ResultTimedOut::Includes(result)) {
|
|
return result;
|
|
}
|
|
|
|
/* Receive the request. */
|
|
if (R_SUCCEEDED(result)) {
|
|
KServerSession *session = objs[index]->DynamicCast<KServerSession *>();
|
|
if (session != nullptr) {
|
|
result = session->ReceiveRequest(message, buffer_size, message_paddr);
|
|
if (svc::ResultNotFound::Includes(result)) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
*out_index = index;
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
|
|
ALWAYS_INLINE Result ReplyAndReceiveImpl(int32_t *out_index, uintptr_t message, size_t buffer_size, KPhysicalAddress message_paddr, KUserPointer<const ams::svc::Handle *> user_handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
/* Ensure number of handles is valid. */
|
|
R_UNLESS(0 <= num_handles && num_handles <= ams::svc::ArgumentHandleCountMax, svc::ResultOutOfRange());
|
|
|
|
/* Get the synchronization context. */
|
|
auto &handle_table = GetCurrentProcess().GetHandleTable();
|
|
KSynchronizationObject **objs = GetCurrentThread().GetSynchronizationObjectBuffer();
|
|
ams::svc::Handle *handles = GetCurrentThread().GetHandleBuffer();
|
|
|
|
/* Copy user handles. */
|
|
if (num_handles > 0) {
|
|
/* Ensure that we can try to get the handles. */
|
|
R_UNLESS(GetCurrentProcess().GetPageTable().Contains(KProcessAddress(user_handles.GetUnsafePointer()), num_handles * sizeof(ams::svc::Handle)), svc::ResultInvalidPointer());
|
|
|
|
/* Get the handles. */
|
|
R_TRY(user_handles.CopyArrayTo(handles, num_handles));
|
|
|
|
/* Convert the handles to objects. */
|
|
R_UNLESS(handle_table.GetMultipleObjects<KSynchronizationObject>(objs, handles, num_handles), svc::ResultInvalidHandle());
|
|
}
|
|
|
|
/* Ensure handles are closed when we're done. */
|
|
ON_SCOPE_EXIT {
|
|
for (auto i = 0; i < num_handles; ++i) {
|
|
objs[i]->Close();
|
|
}
|
|
};
|
|
|
|
return ReplyAndReceiveImpl(out_index, message, buffer_size, message_paddr, objs, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
ALWAYS_INLINE Result SendSyncRequest(ams::svc::Handle session_handle) {
|
|
return SendSyncRequestImpl(0, 0, session_handle);
|
|
}
|
|
|
|
ALWAYS_INLINE Result SendSyncRequestWithUserBuffer(uintptr_t message, size_t buffer_size, ams::svc::Handle session_handle) {
|
|
/* Validate that the message buffer is page aligned and does not overflow. */
|
|
R_UNLESS(util::IsAligned(message, PageSize), svc::ResultInvalidAddress());
|
|
R_UNLESS(buffer_size > 0, svc::ResultInvalidSize());
|
|
R_UNLESS(util::IsAligned(buffer_size, PageSize), svc::ResultInvalidSize());
|
|
R_UNLESS(message < message + buffer_size, svc::ResultInvalidCurrentMemory());
|
|
|
|
/* Get the process page table. */
|
|
auto &page_table = GetCurrentProcess().GetPageTable();
|
|
|
|
/* Lock the mesage buffer. */
|
|
R_TRY(page_table.LockForIpcUserBuffer(nullptr, message, buffer_size));
|
|
|
|
/* Ensure that even if we fail, we unlock the message buffer when done. */
|
|
auto unlock_guard = SCOPE_GUARD { page_table.UnlockForIpcUserBuffer(message, buffer_size); };
|
|
|
|
/* Send the request. */
|
|
MESOSPHERE_ASSERT(message != 0);
|
|
R_TRY(SendSyncRequestImpl(message, buffer_size, session_handle));
|
|
|
|
/* We sent the request successfully, so cancel our guard and check the unlock result. */
|
|
unlock_guard.Cancel();
|
|
return page_table.UnlockForIpcUserBuffer(message, buffer_size);
|
|
}
|
|
|
|
ALWAYS_INLINE Result SendAsyncRequestWithUserBufferImpl(ams::svc::Handle *out_event_handle, uintptr_t message, size_t buffer_size, ams::svc::Handle session_handle) {
|
|
/* Get the process and handle table. */
|
|
auto &process = GetCurrentProcess();
|
|
auto &handle_table = process.GetHandleTable();
|
|
|
|
/* Reserve a new event from the process resource limit. */
|
|
KScopedResourceReservation event_reservation(std::addressof(process), ams::svc::LimitableResource_EventCountMax);
|
|
R_UNLESS(event_reservation.Succeeded(), svc::ResultLimitReached());
|
|
|
|
/* Get the client session. */
|
|
KScopedAutoObject session = GetCurrentProcess().GetHandleTable().GetObject<KClientSession>(session_handle);
|
|
R_UNLESS(session.IsNotNull(), svc::ResultInvalidHandle());
|
|
|
|
/* Get the parent, and persist a reference to it until we're done. */
|
|
KScopedAutoObject parent = session->GetParent();
|
|
MESOSPHERE_ASSERT(parent.IsNotNull());
|
|
|
|
/* Create a new event. */
|
|
KEvent *event = KEvent::Create();
|
|
R_UNLESS(event != nullptr, svc::ResultOutOfResource());
|
|
|
|
/* Initialize the event. */
|
|
event->Initialize();
|
|
|
|
/* Commit our reservation. */
|
|
event_reservation.Commit();
|
|
|
|
/* At end of scope, kill the standing references to the sub events. */
|
|
ON_SCOPE_EXIT {
|
|
event->GetReadableEvent().Close();
|
|
event->Close();
|
|
};
|
|
|
|
/* Register the event. */
|
|
KEvent::Register(event);
|
|
|
|
/* Add the readable event to the handle table. */
|
|
R_TRY(handle_table.Add(out_event_handle, std::addressof(event->GetReadableEvent())));
|
|
|
|
/* Ensure that if we fail to send the request, we close the readable handle. */
|
|
auto read_guard = SCOPE_GUARD { handle_table.Remove(*out_event_handle); };
|
|
|
|
/* Send the async request. */
|
|
R_TRY(session->SendAsyncRequest(event, message, buffer_size));
|
|
|
|
/* We succeeded. */
|
|
read_guard.Cancel();
|
|
return ResultSuccess();
|
|
}
|
|
|
|
ALWAYS_INLINE Result SendAsyncRequestWithUserBuffer(ams::svc::Handle *out_event_handle, uintptr_t message, size_t buffer_size, ams::svc::Handle session_handle) {
|
|
/* Validate that the message buffer is page aligned and does not overflow. */
|
|
R_UNLESS(util::IsAligned(message, PageSize), svc::ResultInvalidAddress());
|
|
R_UNLESS(buffer_size > 0, svc::ResultInvalidSize());
|
|
R_UNLESS(util::IsAligned(buffer_size, PageSize), svc::ResultInvalidSize());
|
|
R_UNLESS(message < message + buffer_size, svc::ResultInvalidCurrentMemory());
|
|
|
|
/* Get the process page table. */
|
|
auto &page_table = GetCurrentProcess().GetPageTable();
|
|
|
|
/* Lock the mesage buffer. */
|
|
R_TRY(page_table.LockForIpcUserBuffer(nullptr, message, buffer_size));
|
|
|
|
/* Ensure that if we fail, we unlock the message buffer. */
|
|
auto unlock_guard = SCOPE_GUARD { page_table.UnlockForIpcUserBuffer(message, buffer_size); };
|
|
|
|
/* Send the request. */
|
|
MESOSPHERE_ASSERT(message != 0);
|
|
const Result result = SendAsyncRequestWithUserBufferImpl(out_event_handle, message, buffer_size, session_handle);
|
|
|
|
/* If the request succeeds (or the thread is terminating), don't unlock the user buffer. */
|
|
if (R_SUCCEEDED(result) || svc::ResultTerminationRequested::Includes(result)) {
|
|
unlock_guard.Cancel();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
ALWAYS_INLINE Result ReplyAndReceive(int32_t *out_index, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
return ReplyAndReceiveImpl(out_index, 0, 0, Null<KPhysicalAddress>, handles, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
ALWAYS_INLINE Result ReplyAndReceiveWithUserBuffer(int32_t *out_index, uintptr_t message, size_t buffer_size, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
/* Validate that the message buffer is page aligned and does not overflow. */
|
|
R_UNLESS(util::IsAligned(message, PageSize), svc::ResultInvalidAddress());
|
|
R_UNLESS(buffer_size > 0, svc::ResultInvalidSize());
|
|
R_UNLESS(util::IsAligned(buffer_size, PageSize), svc::ResultInvalidSize());
|
|
R_UNLESS(message < message + buffer_size, svc::ResultInvalidCurrentMemory());
|
|
|
|
/* Get the process page table. */
|
|
auto &page_table = GetCurrentProcess().GetPageTable();
|
|
|
|
/* Lock the mesage buffer, getting its physical address. */
|
|
KPhysicalAddress message_paddr;
|
|
R_TRY(page_table.LockForIpcUserBuffer(std::addressof(message_paddr), message, buffer_size));
|
|
|
|
/* Ensure that even if we fail, we unlock the message buffer when done. */
|
|
auto unlock_guard = SCOPE_GUARD { page_table.UnlockForIpcUserBuffer(message, buffer_size); };
|
|
|
|
/* Send the request. */
|
|
MESOSPHERE_ASSERT(message != 0);
|
|
R_TRY(ReplyAndReceiveImpl(out_index, message, buffer_size, message_paddr, handles, num_handles, reply_target, timeout_ns));
|
|
|
|
/* We sent the request successfully, so cancel our guard and check the unlock result. */
|
|
unlock_guard.Cancel();
|
|
return page_table.UnlockForIpcUserBuffer(message, buffer_size);
|
|
}
|
|
|
|
}
|
|
|
|
/* ============================= 64 ABI ============================= */
|
|
|
|
Result SendSyncRequest64(ams::svc::Handle session_handle) {
|
|
return SendSyncRequest(session_handle);
|
|
}
|
|
|
|
Result SendSyncRequestWithUserBuffer64(ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, ams::svc::Handle session_handle) {
|
|
return SendSyncRequestWithUserBuffer(message_buffer, message_buffer_size, session_handle);
|
|
}
|
|
|
|
Result SendAsyncRequestWithUserBuffer64(ams::svc::Handle *out_event_handle, ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, ams::svc::Handle session_handle) {
|
|
return SendAsyncRequestWithUserBuffer(out_event_handle, message_buffer, message_buffer_size, session_handle);
|
|
}
|
|
|
|
Result ReplyAndReceive64(int32_t *out_index, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
return ReplyAndReceive(out_index, handles, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
Result ReplyAndReceiveWithUserBuffer64(int32_t *out_index, ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
return ReplyAndReceiveWithUserBuffer(out_index, message_buffer, message_buffer_size, handles, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
/* ============================= 64From32 ABI ============================= */
|
|
|
|
Result SendSyncRequest64From32(ams::svc::Handle session_handle) {
|
|
return SendSyncRequest(session_handle);
|
|
}
|
|
|
|
Result SendSyncRequestWithUserBuffer64From32(ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, ams::svc::Handle session_handle) {
|
|
return SendSyncRequestWithUserBuffer(message_buffer, message_buffer_size, session_handle);
|
|
}
|
|
|
|
Result SendAsyncRequestWithUserBuffer64From32(ams::svc::Handle *out_event_handle, ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, ams::svc::Handle session_handle) {
|
|
return SendAsyncRequestWithUserBuffer(out_event_handle, message_buffer, message_buffer_size, session_handle);
|
|
}
|
|
|
|
Result ReplyAndReceive64From32(int32_t *out_index, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
return ReplyAndReceive(out_index, handles, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
Result ReplyAndReceiveWithUserBuffer64From32(int32_t *out_index, ams::svc::Address message_buffer, ams::svc::Size message_buffer_size, KUserPointer<const ams::svc::Handle *> handles, int32_t num_handles, ams::svc::Handle reply_target, int64_t timeout_ns) {
|
|
return ReplyAndReceiveWithUserBuffer(out_index, message_buffer, message_buffer_size, handles, num_handles, reply_target, timeout_ns);
|
|
}
|
|
|
|
#pragma GCC pop_options
|
|
|
|
}
|