VCB.c

/**************************************************************
*  Class::  CSC-415-02 Spring 2024
* Name::Jiqing Liu
*       Chia-Tung Liu
* Student IDs::922056041
*               923408847
* GitHub-Name::YTDY3867
*              Mob1001
* Group-Name::Alt+F4
* Project:: Basic File System
*
* File:: VCB.c
*
* Description:: Volume Control Blocks funcitons
*
**************************************************************/
#include "VCB.h"
#include "fsLow.h"
#include "Directory.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>


VCB_Block* createVCB(int numberOfBlocks, int blockSize) {
    VCB_Block* blockHolder = malloc(sizeof(VCB_Block));
    if (!blockHolder) {
        return NULL;
    }

    blockHolder->magic_number = MAGIC_NUMBER;
    strncpy(blockHolder->label, "BB", sizeof(blockHolder->label) - 1);
    blockHolder->block_count = numberOfBlocks;
    blockHolder->block_size = blockSize;
    blockHolder->FAT_reference = 1;
    return blockHolder;
}

void TestDirectory(VCB_Block *VCBHolder) {
    printf("TEST ----------------------------------\n");
    DIR_Entry root[MAX_DIR_ENTRIES];

    int rootSize = sizeof(root);
    int blocksContained = (rootSize / VCBHolder->block_size) + (rootSize % VCBHolder->block_size != 0);

    char *buffer = malloc(blocksContained * VCBHolder->block_size);
    if (!buffer) {
        printf("Memory allocation failed\n");
        return;
    }

    LBAread(buffer, blocksContained, VCBHolder->root_reference);

    memcpy(root, buffer, sizeof(root));
    free(buffer);
    buffer=NULL;
    printf("FINISHED READING ----------------------\n");

    for (int i = 0; i < 2; i++) {
        printf("%d's ENTRY ----------> %s\n", i + 1, root[i].name);
        printf("----------------------> %d\n", root[i].size);
        printf("----------------------> %d\n", root[i].isDirectory);
    }
}
int getRootBlock() {
    return 0;
}