stuff

2022-09-07 11:18:56 -05:00
commit 7bb91e666d
121 changed files with 5306 additions and 0 deletions
--- a/07-FunWithFileSystems/ttfs.h
+++ b/07-FunWithFileSystems/ttfs.h
@@ -0,0 +1,37 @@
+#ifndef TTFS_H
+#define TTFS_H
+
+#include <stdint.h>
+
+#define TTFS_MAGIC "TTFS"
+#define FILE_NAME_MAX_LENGTH 22
+#define MAX_FILE_BLOCKS 9
+#define BLOCK_SIZE 512
+
+typedef struct __attribute__((packed)) ttfs_super_block {
+	char ttfs_magic[4];
+	uint32_t inode_count;
+	uint32_t block_count;
+	uint32_t offset_to_inode_map;
+	uint32_t offset_to_block_map;
+	uint32_t offset_to_inode_table;
+	uint32_t offset_to_data_blocks;
+	uint32_t unused;
+} ttfs_super_block;
+
+typedef struct __attribute__((packed)) ttfs_inode {
+	uint8_t inode_used:1;
+	uint8_t is_directory:1;
+	uint8_t unused:6;
+	uint8_t block_count;
+	char file_name[FILE_NAME_MAX_LENGTH];
+	uint32_t file_size;
+	uint32_t blocks[MAX_FILE_BLOCKS];
+} ttfs_inode;
+
+typedef struct __attribute__((packed)) ttfs_directory_block {
+	uint32_t entry_count;
+	uint32_t inodes_inodes[BLOCK_SIZE/sizeof(uint32_t) - 1];
+} ttfs_directory_block;
+
+#endif // TTFS_H