sysupdater: implement (untested) rest of the api

libraries/libstratosphere/source/os/impl/os_transfer_memory_impl.hpp

@@ -0,0 +1,30 @@
+/*
+ * 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.hpp>
+
+namespace ams::os::impl {
+
+    class TransferMemoryImpl {
+        public:
+            static Result Create(Handle *out, void *address, size_t size, MemoryPermission perm);
+            static void Close(Handle handle);
+
+            static Result Map(void **out, Handle handle, void *address, size_t size, MemoryPermission owner_perm);
+            static void Unmap(Handle handle, void *address, size_t size);
+    };
+
+}

libraries/libstratosphere/source/os/impl/os_transfer_memory_impl.os.horizon.cpp

@@ -0,0 +1,77 @@
+/*
+ * 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>
+#include "os_transfer_memory_impl.hpp"
+
+namespace ams::os::impl {
+
+    namespace {
+
+        svc::MemoryPermission ConvertToSvcMemoryPermission(os::MemoryPermission perm) {
+            switch (perm) {
+                case os::MemoryPermission_None:      return svc::MemoryPermission_None;
+                case os::MemoryPermission_ReadOnly:  return svc::MemoryPermission_Read;
+                case os::MemoryPermission_WriteOnly: return svc::MemoryPermission_Write;
+                case os::MemoryPermission_ReadWrite: return svc::MemoryPermission_ReadWrite;
+                AMS_UNREACHABLE_DEFAULT_CASE();
+            }
+        }
+
+    }
+
+    Result TransferMemoryImpl::Create(Handle *out, void *address, size_t size, MemoryPermission perm) {
+        /* Convert memory permission. */
+        auto svc_perm = ConvertToSvcMemoryPermission(perm);
+
+        /* Create the memory. */
+        svc::Handle handle;
+        R_TRY_CATCH(svc::CreateTransferMemory(std::addressof(handle), reinterpret_cast<uintptr_t>(address), size, svc_perm)) {
+            R_CONVERT(svc::ResultOutOfHandles,  os::ResultOutOfHandles())
+            R_CONVERT(svc::ResultOutOfResource, os::ResultOutOfTransferMemory())
+        } R_END_TRY_CATCH_WITH_ABORT_UNLESS;
+
+        *out = handle;
+        return ResultSuccess();
+    }
+
+    void TransferMemoryImpl::Close(Handle handle) {
+        R_ABORT_UNLESS(svc::CloseHandle(handle));
+    }
+
+    Result TransferMemoryImpl::Map(void **out, Handle handle, void *address, size_t size, MemoryPermission owner_perm) {
+        AMS_ASSERT(address != nullptr);
+
+        /* Convert memory permission. */
+        auto svc_owner_perm = ConvertToSvcMemoryPermission(owner_perm);
+
+        /* Map the memory. */
+        R_TRY_CATCH(svc::MapTransferMemory(handle, reinterpret_cast<uintptr_t>(address), size, svc_owner_perm)) {
+            R_CONVERT(svc::ResultInvalidHandle,        os::ResultInvalidHandle())
+            R_CONVERT(svc::ResultInvalidSize,          os::ResultInvalidTransferMemorySize())
+            R_CONVERT(svc::ResultInvalidState,         os::ResultInvalidTransferMemoryState())
+            R_CONVERT(svc::ResultInvalidCurrentMemory, os::ResultInvalidCurrentMemoryState())
+            R_CONVERT(svc::ResultInvalidMemoryRegion,  os::ResultInvalidCurrentMemoryState())
+        } R_END_TRY_CATCH_WITH_ABORT_UNLESS;
+
+        *out = address;
+        return ResultSuccess();
+    }
+
+    void TransferMemoryImpl::Unmap(Handle handle, void *address, size_t size) {
+        R_ABORT_UNLESS(svc::UnmapTransferMemory(handle, reinterpret_cast<uintptr_t>(address), size));
+    }
+
+}