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