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Implement fat32 extended free space function. 

Make fat32 calls reset carry flag explicitly.
This commit is contained in:
Jukka Heinonen 2003-11-03 22:13:25 +00:00 committed by Alexandre Julliard
parent 49eaa0db2b
commit 02a23461ae
1 changed files with 50 additions and 0 deletions
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50
dlls/winedos/int21.c
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@ -2474,6 +2474,55 @@ static BOOL INT21_Fat32( CONTEXT86 *context )
}
break;
case 0x03: /* FAT32 - GET EXTENDED FREE SPACE ON DRIVE */
{
WCHAR dirW[MAX_PATH];
char *dirA = CTX_SEG_OFF_TO_LIN( context,
context->SegDs, context->Edx );
BYTE *data = CTX_SEG_OFF_TO_LIN( context,
context->SegEs, context->Edi );
DWORD cluster_sectors;
DWORD sector_bytes;
DWORD free_clusters;
DWORD total_clusters;
TRACE( "FAT32 - GET EXTENDED FREE SPACE ON DRIVE %s\n", dirA );
MultiByteToWideChar(CP_OEMCP, 0, dirA, -1, dirW, MAX_PATH);
if (CX_reg(context) < 44)
{
SetLastError( ERROR_BAD_LENGTH );
return FALSE;
}
if (!GetDiskFreeSpaceW( dirW, &cluster_sectors, &sector_bytes,
&free_clusters, &total_clusters ))
return FALSE;
*(WORD*) (data + 0) = 44; /* size of structure */
*(WORD*) (data + 2) = 0; /* version */
*(DWORD*)(data + 4) = cluster_sectors;
*(DWORD*)(data + 8) = sector_bytes;
*(DWORD*)(data + 12) = free_clusters;
*(DWORD*)(data + 16) = total_clusters;
/*
* Below we have free/total sectors and
* free/total allocation units without adjustment
* for compression. We fake both using cluster information.
*/
*(DWORD*)(data + 20) = free_clusters * cluster_sectors;
*(DWORD*)(data + 24) = total_clusters * cluster_sectors;
*(DWORD*)(data + 28) = free_clusters;
*(DWORD*)(data + 32) = total_clusters;
/*
* Between (data + 36) and (data + 43) there
* are eight reserved bytes.
*/
}
break;
default:
INT_BARF( context, 0x21 );
}
@ -3923,6 +3972,7 @@ void WINAPI DOSVM_Int21Handler( CONTEXT86 *context )
break;
case 0x73: /* MSDOS7 - FAT32 */
RESET_CFLAG( context );
if (!INT21_Fat32( context ))
bSetDOSExtendedError = TRUE;
break;