From 9d0029f51b80d2882d71d152e1653d783da19f9a Mon Sep 17 00:00:00 2001
From: Sjoerd van der Berg <harekiet@users.sourceforge.net>
Date: Sat, 8 Nov 2003 18:00:47 +0000
Subject: [PATCH] Add method for checking a remote drive.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1417
---
 include/dos_system.h      | 3 ++-
 src/dos/dos_ioctl.cpp     | 5 +++--
 src/dos/drive_local.cpp   | 8 ++++++++
 src/dos/drive_virtual.cpp | 3 +++
 src/dos/drives.h          | 4 +++-
 5 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/include/dos_system.h b/include/dos_system.h
index 5c4cddf8..d93b19be 100644
--- a/include/dos_system.h
+++ b/include/dos_system.h
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_system.h,v 1.17 2003-10-29 19:42:19 finsterr Exp $ */
+/* $Id: dos_system.h,v 1.18 2003-11-08 17:59:30 harekiet Exp $ */
 
 #ifndef DOSSYSTEM_H_
 #define DOSSYSTEM_H_
@@ -222,6 +222,7 @@ public:
 	virtual Bit8u GetMediaByte(void)=0;
 	virtual void SetDir(const char* path) { strcpy(curdir,path); };
 	virtual void EmptyCache(void) { dirCache.EmptyCache(); };
+	virtual bool isRemote(void)=0;
 	char * GetInfo(void);
 	char curdir[DOS_PATHLENGTH];
 	char info[256];
diff --git a/src/dos/dos_ioctl.cpp b/src/dos/dos_ioctl.cpp
index e6cd9fb0..a5d14c00 100644
--- a/src/dos/dos_ioctl.cpp
+++ b/src/dos/dos_ioctl.cpp
@@ -16,7 +16,7 @@
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/* $Id: dos_ioctl.cpp,v 1.16 2003-10-14 08:38:35 qbix79 Exp $ */
+/* $Id: dos_ioctl.cpp,v 1.17 2003-11-08 18:00:46 harekiet Exp $ */
 
 #include <string.h>
 #include "dosbox.h"
@@ -78,8 +78,9 @@ bool DOS_IOCTL(void) {
 		drive=reg_bl;if (!drive) drive=dos.current_drive;else drive--;
 		if (Drives[drive]) {
 			reg_dx=0;
-			//TODO Cdrom drives are remote
+			if (Drives[drive]->isRemote()) reg_dx|=(1 << 12);
 			//TODO Set bit 9 on drives that don't support direct I/O
+			reg_al=0;
 			return true;
 		} else {
 			DOS_SetError(DOSERR_INVALID_DRIVE);
diff --git a/src/dos/drive_local.cpp b/src/dos/drive_local.cpp
index 509d083f..b2c14279 100644
--- a/src/dos/drive_local.cpp
+++ b/src/dos/drive_local.cpp
@@ -311,6 +311,10 @@ Bit8u localDrive::GetMediaByte(void) {
 	return allocation.mediaid;
 }
 
+bool localDrive::isRemote(void) {
+	return false;
+}
+
 localDrive::localDrive(const char * startdir,Bit16u _bytes_sector,Bit8u _sectors_cluster,Bit16u _total_clusters,Bit16u _free_clusters,Bit8u _mediaid) {
 	strcpy(basedir,startdir);
 	sprintf(info,"local directory %s",startdir);
@@ -499,3 +503,7 @@ void cdromDrive::SetDir(const char* path)
 	}
 	localDrive::SetDir(path);
 };
+
+bool cdromDrive::isRemote(void) {
+	return true;
+}
diff --git a/src/dos/drive_virtual.cpp b/src/dos/drive_virtual.cpp
index 64663fde..9dff9f21 100644
--- a/src/dos/drive_virtual.cpp
+++ b/src/dos/drive_virtual.cpp
@@ -227,3 +227,6 @@ Bit8u Virtual_Drive::GetMediaByte(void) {
 	return 0xF8;
 }
 
+bool Virtual_Drive::isRemote(void) {
+	return false;
+}
diff --git a/src/dos/drives.h b/src/dos/drives.h
index 52ddad8f..37158423 100644
--- a/src/dos/drives.h
+++ b/src/dos/drives.h
@@ -41,7 +41,7 @@ public:
 	virtual bool FileExists(const char* name);
 	virtual bool FileStat(const char* name, FileStat_Block * const stat_block);
 	virtual Bit8u GetMediaByte(void);
-
+	virtual bool isRemote(void);
 private:
 	char basedir[CROSS_LEN];
 	
@@ -71,6 +71,7 @@ public:
 	virtual bool GetFileAttr(char * name,Bit16u * attr);
 	virtual bool FindFirst(char * _dir,DOS_DTA & dta);
 	virtual void SetDir(const char* path);
+	virtual bool isRemote(void);
 private:
 	Bit8u subUnit;
 };
@@ -95,6 +96,7 @@ public:
     bool FileStat(const char* name, FileStat_Block* const stat_block);
 	Bit8u GetMediaByte(void);
 	void EmptyCache(void){}
+	bool isRemote(void);
 private:
 	VFILE_Block * search_file;
 };