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Add bounds check.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2903
This commit is contained in:
Peter Veenstra 2007-06-28 19:43:32 +00:00
parent cd9b01ef68
commit f947dae196

View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos_files.cpp,v 1.88 2007-06-27 19:14:59 qbix79 Exp $ */
/* $Id: dos_files.cpp,v 1.89 2007-06-28 19:43:32 qbix79 Exp $ */
#include <string.h>
#include <stdlib.h>
@ -1041,7 +1041,7 @@ bool DOS_FileExists(char const * const name) {
bool DOS_GetAllocationInfo(Bit8u drive,Bit16u * _bytes_sector,Bit8u * _sectors_cluster,Bit16u * _total_clusters) {
if (!drive) drive=dos.current_drive;
else drive--;
if (!Drives[drive]) return false;
if (drive >= DOS_DRIVES || !Drives[drive]) return false;
Bit16u _free_clusters;
Drives[drive]->AllocationInfo(_bytes_sector,_sectors_cluster,_total_clusters,&_free_clusters);
SegSet16(ds,RealSeg(dos.tables.mediaid));