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Added permissions enum and inode table struct, add several function that operate on inodes

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Emma Nora Theuer 2024-10-19 22:20:31 +02:00
parent ca02fd7338
commit 890c08c2ee
1 changed files with 27 additions and 4 deletions
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31
inode.h
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@ -3,31 +3,54 @@
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include "util.h"
typedef struct Inode Inode;
enum permissions {
R = 1,
W = 2,
X = 4
};
struct inode_table {
// the following keyword spam purely exist so I definitely see it with highlighting.
// NOTE, TODO, FIXME, DEPRECATED, HACK, IMPORTANT: always initialize all values to be null when the inode table is created!!!!
// TODO: Change currently hardcoded value to actually accurately describe the size of the filesystem, only for temporary purposes.
Inode* inodes[640000];
uint32_t size;
uint32_t used_inodes;
uint32_t free_inodes;
};
struct Inode {
// file information
char name[64];
uint32_t filesize;
// ownership and permissions
uint16_t permissions;
uint8_t user_permissions;
uint8_t group_permissions;
// UID
uint16_t owner;
// GID
uint16_t group;
// timestamps
tm created;
tm last_modified;
// fs attributes
uint32_t index;
uint16_t block_count;
block* data_block;
};
Inode* create_inode(char name[64], uint16_t owner, uint16_t group, block* data_block);
Inode* create_inode(char name[64], uint8_t user_permissions, uint8_t group_permissions, uint16_t owner, uint16_t group, block* data_block);
Inode* find_inode(char filename[], struct inode_table* itable);
bool inode_exists(struct inode_table* itable, char filename[]);
void delete_inode(struct inode_table* itable, char filename[]);
#endif // INODE_H_