From 25a243ed74e6a8aa1e8d192146ad98a6c0bbe24c Mon Sep 17 00:00:00 2001
From: Sjoerd van der Berg <harekiet@users.sourceforge.net>
Date: Tue, 10 Jun 2003 11:41:17 +0000
Subject: [PATCH] Check if files are withing MAX_FILES limits Added buffers to
 lists of lists.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1048
---
 src/dos/dos_classes.cpp | 8 +++++++-
 src/dos/dos_tables.cpp  | 4 +++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/dos/dos_classes.cpp b/src/dos/dos_classes.cpp
index 6f622b3e..31283fde 100644
--- a/src/dos/dos_classes.cpp
+++ b/src/dos/dos_classes.cpp
@@ -73,6 +73,12 @@ void DOS_InfoBlock::SetfirstFileTable(RealPt _first_table){
 	sSave(sDIB,firstFileTable,_first_table);
 }
 
+void DOS_InfoBlock::SetBuffers(Bit16u x,Bit16u y) {
+	sSave(sDIB,buffers_x,x);
+	sSave(sDIB,buffers_y,y);
+
+}
+
 RealPt DOS_InfoBlock::GetPointer(void)
 {
 	return RealMake(seg,offsetof(sDIB,firstDPB));
@@ -164,7 +170,7 @@ void DOS_PSP::CopyFileTable(DOS_PSP* srcpsp,bool createchildpsp)
 		if(createchildpsp)
 		{	//copy obeying not inherit flag.(but dont duplicate them)
 			bool allowCopy = (handle==0) || ((handle>0) && (FindEntryByHandle(handle)==0xff));
-			if(Files[handle] && !(Files[handle]->flags & DOS_NOT_INHERIT) && allowCopy)
+			if((handle<DOS_FILES) && Files[handle] && !(Files[handle]->flags & DOS_NOT_INHERIT) && allowCopy)
 			{    
 				SetFileHandle(i,handle);
 			}
diff --git a/src/dos/dos_tables.cpp b/src/dos/dos_tables.cpp
index 8332e17e..e9035193 100644
--- a/src/dos/dos_tables.cpp
+++ b/src/dos/dos_tables.cpp
@@ -55,12 +55,14 @@ void DOS_SetupTables(void) {
 	for (i=0;i<DOS_DRIVES;i++) mem_writeb(Real2Phys(dos.tables.mediaid)+i,0);
 	mem_writeb(Real2Phys(dos.tables.indosflag),0);
 	/* Create the DOS Info Block */
-	dos_infoblock.SetLocation(DOS_GetMemory(6));
+	dos_infoblock.SetLocation(DOS_GetMemory(1+(sizeof(DOS_InfoBlock::sDIB)/16)));
 	/* Create a fake SFT, so programs think there are 100 file handles */
 	seg=DOS_GetMemory(1);
 	real_writed(seg,0,0xffffffff);		//Last File Table
 	real_writew(seg,4,100);				//File Table supports 100 files
 	dos_infoblock.SetfirstFileTable(RealMake(seg,0));
+	/* Set buffers to a nice value */
+	dos_infoblock.SetBuffers(50,50);
 }