In INT21_GetFreeDiskSpace adjust the sectors-per-cluster value to make

the total number of clusters fit in a 16 bit register.

In INT21_GetFreeDiskSpace adjust the sectors-per-cluster value to make
a1e8ba9f · Rein Klazes · Alexandre Julliard · f32a1053 · a1e8ba9f
Commit a1e8ba9f authored Jun 03, 2004 by Rein Klazes Committed by Alexandre Julliard Jun 03, 2004
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int21.c dlls/winedos/int21.c +6 -0

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--- a/dlls/winedos/int21.c
+++ b/dlls/winedos/int21.c
@@ -3397,6 +3397,12 @@ static int INT21_GetFreeDiskSpace( CONTEXT86 *context )
    root[0] += INT21_MapDrive(DL_reg(context));
    if (!GetDiskFreeSpaceW( root, &cluster_sectors, &sector_bytes,
                            &free_clusters, &total_clusters )) return 0;
+    /* make sure that the number of clusters fits in a 16 bits value */
+    while( total_clusters & 0xffff0000) {
+        cluster_sectors <<= 1;
+        free_clusters >>= 1;
+        total_clusters >>= 1;
+    }
    SET_AX( context, cluster_sectors );
    SET_BX( context, free_clusters );
    SET_CX( context, sector_bytes );