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7c84b7bcee
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3 changed files with 51 additions and 21 deletions
24
inode.c
24
inode.c
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@ -1 +1,25 @@
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#include "inode.h"
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Inode* find_inode(char filename[], struct inode_table* itable) {
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for (uint32_t i = 0; i < itable->size; i++) {
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if (strcmp(filename, itable->inodes[i]->name)) {
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return itable->inodes[i];
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}
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}
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return NULL;
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}
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bool inode_exists(struct inode_table* itable, char filename[]) {
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for (uint32_t i = 0; i < itable->size; i++) {
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if (strcmp(filename, itable->inodes[i]->name)) {
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return true;
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}
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}
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return false;
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}
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void delete_inode(struct inode_table* itable, char filename[]) {
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Inode* wanted_inode = find_inode(filename, itable);
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free(wanted_inode);
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wanted_inode = NULL;
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}
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31
inode.h
31
inode.h
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@ -3,31 +3,54 @@
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include "util.h"
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typedef struct Inode Inode;
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enum permissions {
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R = 1,
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W = 2,
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X = 4
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};
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struct inode_table {
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// the following keyword spam purely exist so I definitely see it with highlighting.
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// NOTE, TODO, FIXME, DEPRECATED, HACK, IMPORTANT: always initialize all values to be null when the inode table is created!!!!
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// TODO: Change currently hardcoded value to actually accurately describe the size of the filesystem, only for temporary purposes.
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Inode* inodes[640000];
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uint32_t size;
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uint32_t used_inodes;
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uint32_t free_inodes;
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};
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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 filesize;
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// ownership and permissions
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uint16_t permissions;
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uint8_t user_permissions;
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uint8_t group_permissions;
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// UID
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uint16_t owner;
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// GID
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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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Inode* create_inode(char name[64], uint16_t owner, uint16_t group, block* data_block);
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Inode* create_inode(char name[64], uint8_t user_permissions, uint8_t group_permissions, uint16_t owner, uint16_t group, block* data_block);
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Inode* find_inode(char filename[], struct inode_table* itable);
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bool inode_exists(struct inode_table* itable, char filename[]);
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void delete_inode(struct inode_table* itable, char filename[]);
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#endif // INODE_H_
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17
super.c
17
super.c
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@ -9,14 +9,6 @@
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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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struct inode_table {
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// TODO: Change currently hardcoded value to actually accurately describe the size of the filesystem, only for temporary purposes.
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Inode* inodes[640000];
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};
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struct super_block {
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// fs info
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char version[8];
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@ -35,13 +27,4 @@ struct super_block {
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struct inode_table* inode_table;
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};
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// TODO: Do research on how the fuck to actually do this kind of Array operation
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Inode* find_inode(char filename[], struct super_block sblock) {
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struct inode_table* itable = sblock.inode_table;
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// while (itable[inode] != NULL; inode++) {
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// if (strcmp(filename, itable[inode]->filesize))
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// }
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return NULL;
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}
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#endif // SUPER_H_
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