Initial Commit
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caf7b99f2d
6 changed files with 117 additions and 0 deletions
5
inode.c
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5
inode.c
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#include "inode.h"
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tm* get_local_time() {
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return localtime(¤t_time);
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}
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43
inode.h
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43
inode.h
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#ifndef INODE_H_
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#define INODE_H_
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#include <stdint.h>
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#include <stdlib.h>
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#include <time.h>
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#include "util.h"
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typedef struct Inode Inode;
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typedef struct tm tm;
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// Global Variables
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time_t current_time;
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// Structs
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struct tm *local_time;
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struct Inode {
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// file information
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char name[64];
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uint32_t size;
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// ownership and permissions
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uint16_t permissions;
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uint16_t owner;
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uint16_t group;
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// timestamps
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tm created;
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tm last_modified;
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// fs attributes
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uint32_t index;
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uint16_t block_count;
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block* data_block;
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};
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tm* get_local_time();
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Inode* create_inode(char name[64], uint16_t owner, uint16_t group, block* data_block);
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Inode* find_inode(char name[]);
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#endif // INODE_H_
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28
io.h
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28
io.h
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#ifndef IO_H_
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#define IO_H_
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#define MAX_FDS 1024
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#include <stdlib.h>
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#include <sys/types.h>
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#include "inode.h"
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struct file_descriptor {
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Inode *inode;
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off_t offset;
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int flags;
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int ref_count;
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};
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struct Process {
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struct file_descriptor fd_table[MAX_FDS];
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};
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int allocate_fd(struct Process proc, Inode inode, int flags);
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int emmafs_open(char name[]);
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int emmafs_close(char name[]);
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//int emmafs_read(int fd)
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//int emmafs_write(int fd)
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#endif // IO_H_
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16
super.c
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16
super.c
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#ifndef SUPER_H_
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#define SUPER_H_
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#include "inode.h"
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#include "util.h"
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// fs attributes
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#define MAGIC 0x7F631EC4
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#define VERSION 0.0.0.1
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#define BLOCKSIZE 4096
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uint32_t free_blocks;
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uint32_t inode_count;
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#endif // SUPER_H_
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6
util.c
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6
util.c
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#include "util.h"
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int find_number_of_inodes(uint64_t fs_size){
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int number_of_inodes = fs_size / BITS_PER_INODE;
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return number_of_inodes;
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}
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19
util.h
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19
util.h
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#ifndef BLOCK_H_
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#define BLOCK_H_
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#include <stdint.h>
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#define BLOCKSIZE 4096
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#define BITS_PER_INODE 16384
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typedef struct block block;
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struct block {
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char data[BLOCKSIZE];
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};
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// Provide fs size in bytes
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int find_number_of_inodes(uint64_t fs_size);
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#endif // BLOCK_H_
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