fusee_cpp: Implement fatal display, reading of fusee-secondary

fusee_cpp/program/source/fs/fusee_fs_api.hpp

@@ -0,0 +1,94 @@
+/*
+ * 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 <exosphere.hpp>
+
+namespace ams::fs {
+
+    enum OpenMode {
+        OpenMode_Read   = (1 << 0),
+        OpenMode_Write  = (1 << 1),
+        OpenMode_AllowAppend = (1 << 2),
+
+        OpenMode_ReadWrite = (OpenMode_Read | OpenMode_Write),
+        OpenMode_All       = (OpenMode_ReadWrite | OpenMode_AllowAppend),
+    };
+
+    struct ReadOption {
+        u32 value;
+
+        static const ReadOption None;
+    };
+
+    inline constexpr const ReadOption ReadOption::None = {0};
+
+    inline constexpr bool operator==(const ReadOption &lhs, const ReadOption &rhs) {
+        return lhs.value == rhs.value;
+    }
+
+    inline constexpr bool operator!=(const ReadOption &lhs, const ReadOption &rhs) {
+        return !(lhs == rhs);
+    }
+
+    static_assert(util::is_pod<ReadOption>::value && sizeof(ReadOption) == sizeof(u32));
+
+    struct WriteOption {
+        u32 value;
+
+        constexpr inline bool HasFlushFlag() const {
+            return this->value & 1;
+        }
+
+        static const WriteOption None;
+        static const WriteOption Flush;
+    };
+
+    inline constexpr const WriteOption WriteOption::None = {0};
+    inline constexpr const WriteOption WriteOption::Flush = {1};
+
+    inline constexpr bool operator==(const WriteOption &lhs, const WriteOption &rhs) {
+        return lhs.value == rhs.value;
+    }
+
+    inline constexpr bool operator!=(const WriteOption &lhs, const WriteOption &rhs) {
+        return !(lhs == rhs);
+    }
+
+    static_assert(util::is_pod<WriteOption>::value && sizeof(WriteOption) == sizeof(u32));
+
+    struct FileHandle {
+        void *_handle;
+    };
+
+    bool MountSdCard();
+    void UnmountSdCard();
+
+    Result CreateFile(const char *path, s64 size);
+    Result CreateDirectory(const char *path);
+    Result OpenFile(FileHandle *out_file, const char *path, int mode);
+
+    Result ReadFile(FileHandle handle, s64 offset, void *buffer, size_t size, const fs::ReadOption &option);
+    Result ReadFile(FileHandle handle, s64 offset, void *buffer, size_t size);
+    Result ReadFile(size_t *out, FileHandle handle, s64 offset, void *buffer, size_t size, const fs::ReadOption &option);
+    Result ReadFile(size_t *out, FileHandle handle, s64 offset, void *buffer, size_t size);
+    Result GetFileSize(s64 *out, FileHandle handle);
+    Result FlushFile(FileHandle handle);
+    Result WriteFile(FileHandle handle, s64 offset, const void *buffer, size_t size, const fs::WriteOption &option);
+    Result SetFileSize(FileHandle handle, s64 size);
+    int GetFileOpenMode(FileHandle handle);
+    void CloseFile(FileHandle handle);
+
+}