void main(void) {
unsigned long numSectors;
/* init interrupts */
initInterrupts();
/* check disk ready */
if (!checkDiskReady()) {
error("disk not ready");
}
/* determine disk size */
numSectors = getDiskSize();
printf("Disk has %lu (0x%lX) sectors.\n",
numSectors, numSectors);
if (numSectors < 32) {
error("disk is too small");
}
/* copy boot block to write buffer */
copyBootBlock();
/* write boot block to disk */
printf("Writing boot block to disk...\n");
if (!writeDisk(0, 32, wrBuf)) {
error("cannot write boot block to disk");
}
/* done */
printf("Halting...\n");
}
void writeDiskSector(char *data, FILE *f) {
int pos;
printf("Track:%d, Sector:%d Pos:%06x written\n", track*2+(sectrk > 15), (sectrk > 15 ? sectrk - 16 : sectrk)+1, pos = getSectorLocation(track, sectrk*2));
writeDisk(data, pos, 256, f);
if (++sectrk >= 32) {
sectrk = 0; track++;
}
}
int mkDir(MyDisk * disk,DirBlock * curBlock,short curBlockp,char * dirName)
{
short pi,pb,i=0;
DirBlock *newDirBlock;
pi=getAvailableInode(disk);
pb=getAvailabeBlock(disk);
if(!pi||!pb)//创建目录失败
return 0;
//在curDirBlock中加入新的inode指针,指向inodeTable中的位置
while(curBlock->inodeID[i])
{
if(!strcmp(dirName,curBlock->fileName[i]))//已存在同名文件
{
printf("已存在同名文件，无法新建!\n");
return 0;
}
i++;
}
curBlock->inodeID[i]=pi;
strcpy(curBlock->fileName[i],dirName);
writeDisk(curBlock,BLOCK_SIZE,1,sizeof(MyDisk)+curBlockp*BLOCK_SIZE);
//为新的目录分配一个inode和DirBlock
disk->superB.freeBlocks--;
disk->superB.freeInodes--;
disk->inodeUsedMap[pi]=1;
disk->inodeTable[pi].blockPoint[0]=pb;
disk->inodeTable[pi].fileType=2;
disk->blockUsedMap[pb]=1;
newDirBlock=(DirBlock *)malloc(sizeof(DirBlock));
memset(newDirBlock,0,sizeof(DirBlock));
writeDisk(newDirBlock,BLOCK_SIZE,1,sizeof(MyDisk)+pb*BLOCK_SIZE);
return 1;
}
