#define ZERO_BUF_SIZE 2048 U0 BlkZeroWrite(CDrv *dv,I64 blk,I64 cnt) {//Fill blk cnt with zeros in Drv. I64 n; U8 *z=CAlloc(ZERO_BUF_SIZE<<BLK_SIZE_BITS); Bool show_progress; if (cnt>ZERO_BUF_SIZE && dv->bd->type!=BDT_RAM) { progress1=0; progress1_max=cnt; StrCpy(progress1_desc,"Zeroing"); show_progress=TRUE; } else show_progress=FALSE; while (cnt>0) { n=cnt; if (n>ZERO_BUF_SIZE) n=ZERO_BUF_SIZE; BlkWrite(dv,z,blk,n); blk+=n; cnt-=n; if (show_progress) progress1+=n; Yield; //Prevent locking } Free(z); if (show_progress) { *progress1_desc=0; progress1=progress1_max=0; } } Bool BlkRead(CDrv *dv,U8 *buf, I64 blk, I64 cnt) {//Read blk cnt from Drv to buf. Bool res=TRUE,unlock; CBlkDev *bd=dv->bd; if (cnt<=0) return TRUE; DrvChk(dv); try { unlock=DrvLock(dv); BlkDevInit(bd); if (dv->drv_offset && blk<dv->drv_offset || blk+cnt>dv->drv_offset+dv->size) throw('Drv'); if (bd->flags & BDF_READ_CACHE) RCache(dv,&buf,&blk,&cnt); if (cnt>0) { switch (bd->type) { case BDT_RAM: MemCpy(buf,bd->RAM_dsk+blk<<BLK_SIZE_BITS,cnt<<BLK_SIZE_BITS); break; case BDT_ISO_FILE_READ: case BDT_ISO_FILE_WRITE: FBlkRead(bd->file_dsk,buf,blk,cnt); break; case BDT_ATA: case BDT_ATAPI: res=ATARBlks(dv,buf,blk,cnt); break; } bd->last_time=tS; if (bd->flags & BDF_READ_CACHE) DskCacheAdd(dv,buf,blk,cnt); } if (unlock) DrvUnlock(dv); } catch if (unlock) DrvUnlock(dv); return res; } Bool BlkWrite(CDrv *dv,U8 *buf, I64 blk, I64 cnt) {//Write blk cnt from buf to Drv. Bool res=TRUE,unlock; CBlkDev *bd=dv->bd; if (cnt<=0) return TRUE; DrvChk(dv); try { unlock=DrvLock(dv); BlkDevInit(bd); if (bd->flags&BDF_READ_ONLY && !(bd->flags & BDF_READ_ONLY_OVERRIDE)) throw('BlkDev'); if (dv->drv_offset && blk<dv->drv_offset || blk+cnt>dv->drv_offset+dv->size) throw('Drv'); if (cnt>0) { switch (bd->type) { case BDT_RAM: MemCpy(bd->RAM_dsk+blk<<BLK_SIZE_BITS,buf,cnt<<BLK_SIZE_BITS); break; case BDT_ISO_FILE_READ: case BDT_ISO_FILE_WRITE: FBlkWrite(bd->file_dsk,buf,blk,cnt); break; case BDT_ATA: case BDT_ATAPI: res=ATAWBlks(dv,buf,blk,cnt); break; } bd->last_time=tS; if (bd->flags & BDF_READ_CACHE) DskCacheAdd(dv,buf,blk,cnt); } if (unlock) DrvUnlock(dv); } catch if (unlock) DrvUnlock(dv); return res; }