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Fix emulated scsi read/write bounds check

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This was off by one making the last sector inaccessible
This commit is contained in:
Matt Harlum 2025-10-22 08:38:12 +00:00
parent 368d716889
commit 2f25b5c1e8
1 changed files with 2 additions and 2 deletions
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4
iotask.c
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@ -172,7 +172,7 @@ static BYTE handle_scsi_command(struct IOStdReq *ioreq) {
count = ((struct SCSI_CDB_16 *)command)->length;
do_scsi_transfer:
if (data == NULL || (lba + count) >= unit->logicalSectors) {
if (data == NULL || (lba + count) > unit->logicalSectors) {
error = IOERR_BADADDRESS;
fake_scsi_sense(scsi_command,lba,count,error);
break;
@ -501,7 +501,7 @@ transfer:
}
if ((lba + count) > (unit->logicalSectors)) {
Trace("Read past end of device\n");
Trace("Access past end of device\n");
error = IOERR_BADADDRESS;
break;
}