Initial commit of block device interface and emulated block device

2017-02-25 14:31:14 -06:00
parent b113bba3ae
commit 02156cb47d
7 changed files with 471 additions and 43 deletions
@@ -0,0 +1,37 @@
+/*
+ * Configuration and type definitions
+ *
+ * Copyright (c) 2017 Christopher Haster
+ * Distributed under the MIT license
+ */
+#ifndef LFS_CONFIG_H
+#define LFS_CONFIG_H
+
+#include <stdint.h>
+
+// Type definitions
+typedef uint64_t lfs_lword_t;
+typedef uint32_t lfs_word_t;
+typedef uint16_t lfs_hword_t;
+
+typedef lfs_word_t lfs_size_t;
+typedef lfs_word_t lfs_off_t;
+typedef int lfs_error_t;
+
+typedef lfs_lword_t lfs_lsize_t;
+typedef lfs_word_t  lfs_ino_t;
+typedef lfs_hword_t lfs_ioff_t;
+
+// Maximum length of file name
+#define LFS_NAME_MAX 255
+
+// Builtin functions
+static inline lfs_word_t lfs_max(lfs_word_t a, lfs_word_t b) {
+    return (a > b) ? a : b;
+}
+
+static inline lfs_word_t lfs_min(lfs_word_t a, lfs_word_t b) {
+    return (a < b) ? a : b;
+}
+
+#endif