Espresso 0.0.1a

include/fs/ramfs.h

@@ -1,53 +1,56 @@
 #ifndef _RAM_FS_H
 #define _RAM_FS_H
 
-#include <stdint.h>
-#include <stdbool.h>
+#include <types.h>
 
-
-#define RAMFS_MAX_FILES 128
-#define RAMFS_BLOCK_SIZE 4096
-#define RAMFS_MAX_PATH_LEN 255
+#define RAMFS_FILENAME_LEN 32
 
 #define RAMFS_PERM_READ   0x01
 #define RAMFS_PERM_WRITE  0x02
 #define RAMFS_PERM_EXEC   0x04
 #define RAMFS_PERM_ALL    (RAMFS_PERM_READ | RAMFS_PERM_WRITE | RAMFS_PERM_EXEC)
 
-typedef struct ramfs_file {
-    char name[RAMFS_MAX_PATH_LEN];
-    uint32_t size;
-    uint8_t* data;
-    uint8_t permissions;
-} ramfs_file_t;
+#define RAMFS_FILE_DIR    'd'
+#define RAMFS_FILE_TEXT   't'
+#define RAMFS_FILE_BINARY 'b'
+#define RAMFS_FILE_LINK   'l'
+#define RAMFS_FILE_NOFILE 'n'
 
-typedef struct ramfs_directory {
-    char name[RAMFS_MAX_PATH_LEN];
-    ramfs_file_t* files[RAMFS_MAX_FILES];
-    uint32_t file_count;
-} ramfs_directory_t;
+#define RAMFS_ENCR_NONE   'n'
+#define RAMFS_ENCR_SIMPLE 's'
 
+typedef struct ramfs_file_header {
+  char filename[RAMFS_FILENAME_LEN + 1];
+  char type;
+  char encryption;
+  
+  struct ramfs_file_header* content;
+  struct ramfs_file_header* parent;
+  struct ramfs_file_header* next;
+  struct ramfs_file_header* link_target;
+  
+  void* data_begin;
+  void* data_end;
+  
+  int32_t read_offset;
+  
+  int32_t fd;
+} ramfs_file_header_t;
 
-void ramfs_init();
+void ramfs_init(void);
 
-ramfs_file_t* ramfs_create_file(const char* name, uint32_t size, uint8_t permissions);
-bool ramfs_delete_file(const char* name);
-ramfs_file_t* ramfs_find_file(const char* name);
+ramfs_file_header_t* ramfs_make_root(void);
+ramfs_file_header_t* ramfs_get_root(void);
+int32_t ramfs_get_files(void);
+bool ramfs_get_initialized(void);
 
-bool ramfs_create_directory(const char* name);
-bool ramfs_delete_directory(const char* name);
+ramfs_file_header_t* ramfs_resolve_path(const char* path);
+ramfs_file_header_t* ramfs_resolve_fd_dir(ramfs_file_header_t* current, int32_t fd);
+ramfs_file_header_t* ramfs_resolve_fd(int32_t fd);
 
-bool ramfs_check_permissions(const char* name, uint8_t required_permissions);
-
-bool ramfs_resize_file(const char* name, uint32_t new_size);
-bool ramfs_append_to_file(const char* name, const uint8_t* data, uint32_t data_size);
-
-bool ramfs_read_file(const char* name, uint8_t* buffer, uint32_t buffer_size);
-bool ramfs_write_file(const char* name, const uint8_t* data, uint32_t size);
-bool ramfs_overwrite_file(const char* name, const uint8_t* data, uint32_t size);
-
-
-void ramfs_list_files();
-void ramfs_list_directories();
+ramfs_file_header_t* ramfs_create_file(char* name, char type, char encryption, ramfs_file_header_t* parent);
+int32_t ramfs_delete_file(ramfs_file_header_t* file);
+ramfs_file_header_t* ramfs_write_file(ramfs_file_header_t* file, void* data, size_t len);
+int32_t ramfs_read_file(ramfs_file_header_t* file, void* buffer, size_t buffer_len);
 
 #endif