A update

include/fs/duckfs.h

@@ -0,0 +1,79 @@
+#ifndef _DUCKFS_H
+#define _DUCKFS_H
+
+#include <stdint.h>
+
+#define DFS_MAGIC 0xDF1984CC
+
+#define DFS_BLOCK_SIZE     512
+
+#define DFS_VERSION_0      "DuckFS, wheresDax?"
+#define DFS_VERSION_1      "DuckFS, Terminator"
+#define DFS_VERSION_2      "DuckFS-Terminator2"
+#define DFS_VERSION_3      "DuckFS,StarWarsEIV"
+#define DFS_VERSION_4      "DuckFS QUACK,QUACK"
+
+
+#define DFS_FILE_ERROR     -8
+#define DFS_FILE_UNUSED    -1
+#define DFS_FILE_USED      0
+#define DFS_FILE_TEXT      0
+#define DFS_FILE_BINARY    1
+#define DFS_FILE_DIRECTORY 2
+
+/* encryption algorithms */
+#define DFS_CAESAR_5       88
+#define DFS_CAESAR_8       84
+#define DFS_CAESAR_2       09
+#define DFS_QUACK_32       99
+
+#define DFS_MAX_FILENAME_LEN   64
+#define DFS_MAX_FILES          256
+
+
+typedef struct duckfs_file_header {
+  char filename[DFS_MAX_FILENAME_LEN + 1]; /* + 1 for the \0 */
+  char permissions[3]; /* Same thing here */
+  
+  /*
+  512 Bytes per sector, meaning a 2 sector file is 1024 bytes, or 1 KiB.
+  Only valid if this file is not a directory.
+  */
+  int32_t num_sectors;
+  
+  int16_t type; /* Indicates the file type. -1 for null file, 0 for a text file, 1 for a binary file, and 2 for a directory. */
+  
+  uint16_t _reserved0; /* (align to 4) */
+  
+  struct duckfs_file_header* next;
+  struct duckfs_file_header* prev;
+  struct duckfs_file_header* contents; /* contains the directories files. only valid if this file is a directory. */
+  
+  uint32_t lba_start; /* only is valid if this file is not a directory. */
+  uint32_t lba_end; /* only is valid if this file is not a directory. */
+  
+  uint8_t _reserved1[158]; /* padding to 256 bytes total */
+} duckfs_file_header_t;
+
+typedef struct duckfs_superblock {
+  int32_t duckfs_magic; /* must be DFS_MAGIC. */
+  char duckfs_version_string[19];
+  char volume_label[19]; /* 18 characters and a null zero. */
+
+  int16_t encryption;
+  
+  struct duckfs_file_header* duckfs_root;
+  
+  uint32_t _padding[116];
+} duckfs_superblock_t;
+
+int32_t duckfs_init(int16_t drive);
+void duckfs_format(int16_t drive);
+
+int32_t duckfs_makedir(const char* filename, const char* perms);
+void duckfs_free_directory(duckfs_file_header_t* dir);
+
+duckfs_file_header_t duckfs_create_entry(const char* name, const char* perms, const char* type);
+bool duckfs_add_entry(duckfs_file_header_t* dir, duckfs_file_header_t* entry);
+
+#endif