fs: implement AccessLog, enable for File operations

libraries/libstratosphere/source/fs/fs_result_utils.cpp

@@ -0,0 +1,69 @@
+/*
+ * 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::fs {
+
+    namespace {
+
+        constinit bool g_handled_by_application = false;
+
+    }
+
+    void SetResultHandledByApplication(bool application) {
+        g_handled_by_application = application;
+    }
+
+    namespace impl {
+
+        bool IsAbortNeeded(Result result) {
+            /* If the result succeeded, we never need to abort. */
+            if (R_SUCCEEDED(result)) {
+                return false;
+            }
+
+            /* Get the abort specifier from current context. */
+            switch (GetCurrentThreadFsContext()->HandleResult(result)) {
+                case AbortSpecifier::Default:
+                    if (g_handled_by_application) {
+                        return !fs::ResultHandledByAllProcess::Includes(result);
+                    } else {
+                        return !(fs::ResultHandledByAllProcess::Includes(result) || fs::ResultHandledBySystemProcess::Includes(result));
+                    }
+                case AbortSpecifier::Abort:
+                    return true;
+                case AbortSpecifier::Return:
+                    return false;
+                AMS_UNREACHABLE_DEFAULT_CASE();
+            }
+        }
+
+        void LogResultErrorMessage(Result result) {
+            /* TODO: log specific results */
+        }
+
+        void LogErrorMessage(Result result, const char *function) {
+            /* If the result succeeded, there's nothing to log. */
+            if (R_SUCCEEDED(result)) {
+                return;
+            }
+
+            /* TODO: Actually log stuff. */
+        }
+
+    }
+
+}