Espresso 0.0.1b

include/fs/duckfs.h

@@ -3,6 +3,52 @@
 
 #include <types.h>
 
-void duckfs_init(void);
+#define DUCKFS_MAGIC "DUCKFS1"
+#define DUCKFS_NAME_LEN 32
+
+typedef enum { DUCKFS_TYPE_FILE = 0, DUCKFS_TYPE_DIR = 1, DUCKFS_TYPE_SYMLINK = 2 } duckfs_type_t;
+
+typedef struct {
+    char name[DUCKFS_NAME_LEN];
+    duckfs_type_t type;
+    uint8_t permissions;      /* rwxrwxrwx packed into 9 bits  */
+    uint16_t uid;
+    uint16_t gid;
+    uint64_t size;
+    uint64_t created;
+    uint64_t modified;
+    uint64_t first_block_lba;
+    uint64_t next_file_lba;
+    uint64_t child_lba;       /* only for directories */
+} __attribute__((packed)) duckfs_file_header_t;
+
+typedef struct {
+    char magic[8];            /* "DUCKFS1\0" */
+    uint32_t block_size;
+    uint64_t total_blocks;
+    uint64_t root_header_lba;
+    uint64_t free_list_lba;
+    uint32_t fs_version;
+} __attribute__((packed)) duckfs_superblock_t;
+
+struct free_block {
+    uint64_t next;
+};
+
+/* DuckFS API  */
+int32_t duckfs_mount(void);
+
+int32_t duckfs_find(const char* path, duckfs_file_header_t* out);
+
+int32_t duckfs_create_file(const char* name, const void* content, size_t size, uint16_t uid, uint16_t gid, uint8_t perms, duckfs_file_header_t* parent_dir);
+int32_t duckfs_create_dir(const char* name, uint16_t uid, uint16_t gid, uint8_t perms, duckfs_file_header_t* parent_dir);
+int32_t duckfs_delete_file(const char* name, duckfs_file_header_t* parent_dir);
+int32_t duckfs_delete_dir(const char* name, duckfs_file_header_t* parent_dir);
+
+int32_t duckfs_read_file(const duckfs_file_header_t* file, void* buffer, size_t size);
+int32_t duckfs_write_data(duckfs_file_header_t* file, const void* data, size_t offset, size_t length);
+int32_t duckfs_append_data(duckfs_file_header_t* file, const void* data, size_t length);
+
+int32_t duckfs_truncate(duckfs_file_header_t* file, size_t new_size);
 
 #endif