Remove false friend declarations

The single use from friended class is in public interface. Removal of
friend designators allows Clang to pinpoint few additional unused
private fields.

src/dos/dos_programs.cpp

@@ -16,14 +16,14 @@
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
+#include "programs.h"
 
-#include "dosbox.h"
-#include <stdlib.h>
-#include <string.h>
 #include <cctype>
+#include <cstdlib>
+#include <cstring>
 #include <string>
 #include <vector>
-#include "programs.h"
+
 #include "support.h"
 #include "drives.h"
 #include "cross.h"
@@ -31,15 +31,13 @@
 #include "callback.h"
 #include "cdrom.h"
 #include "dos_system.h"
-#include "dos_inc.h"
 #include "bios.h"
 #include "bios_disk.h" 
 #include "setup.h"
 #include "control.h"
 #include "inout.h"
 #include "dma.h"
-
-
+#include "shell.h"
 
 #if defined(WIN32)
 #ifndef S_ISDIR

src/dos/drive_fat.cpp

@@ -720,8 +720,6 @@ fatDrive::fatDrive(const char *sysFilename,
                    Bit32u startSector)
 	: loadedDisk(nullptr),
 	  created_successfully(true),
-	  srchInfo{ {0} },
-	  allocation{0, 0, 0, 0, 0},
 	  bootbuffer{{0}, {0}, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0}, 0, 0},
 	  absolute(false),
 	  fattype(0),
@@ -730,10 +728,9 @@ fatDrive::fatDrive(const char *sysFilename,
 	  firstDataSector(0),
 	  firstRootDirSect(0),
 	  cwdDirCluster(0),
-	  dirPosition(0),
 	  fatSectBuffer{0},
 	  curFatSect(0)
- {
+{
 	FILE *diskfile;
 	Bit32u filesize;
 	bool is_hdd;

src/dos/drives.cpp

@@ -16,11 +16,8 @@
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-
-#include "dosbox.h"
-#include "dos_system.h"
 #include "drives.h"
-#include "mapper.h"
+
 #include "support.h"
 
 bool WildFileCmp(const char * file, const char * wild) 

src/dos/drives.h

@@ -16,16 +16,17 @@
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
+#ifndef DOSBOX_DRIVES_H
+#define DOSBOX_DRIVES_H
 
-#ifndef _DRIVES_H__
-#define _DRIVES_H__
+#include "dosbox.h"
 
 #include <memory>
 #include <string>
 #include <vector>
-#include <sys/types.h>
+
+#include "dos_inc.h"
 #include "dos_system.h"
-#include "shell.h" /* for DOS_Shell */
 
 bool WildFileCmp(const char * file, const char * wild);
 void Set_Label(char const * const input, char * const output, bool cdrom);
@@ -75,9 +76,6 @@ public:
 	const char* getBasedir() {return basedir;};
 protected:
 	char basedir[CROSS_LEN];
-private:
-	friend void DOS_Shell::CMD_SUBST(char* args);
-protected:
 	struct {
 		char srch_dir[CROSS_LEN];
 	} srchInfo[MAX_OPENDIRS];
@@ -197,18 +195,6 @@ private:
 	bool addDirectoryEntry(Bit32u dirClustNumber, direntry useEntry);
 	void zeroOutCluster(Bit32u clustNumber);
 	bool getEntryName(char *fullname, char *entname);
-	friend void DOS_Shell::CMD_SUBST(char* args); 	
-	struct {
-		char srch_dir[CROSS_LEN];
-	} srchInfo[MAX_OPENDIRS];
-
-	struct {
-		Bit16u bytes_sector;
-		Bit8u sectors_cluster;
-		Bit16u total_clusters;
-		Bit16u free_clusters;
-		Bit8u mediaid;
-	} allocation;
 	
 	bootstrap bootbuffer;
 	bool absolute;
@@ -219,13 +205,11 @@ private:
 	Bit32u firstRootDirSect;
 
 	Bit32u cwdDirCluster;
-	Bit32u dirPosition; /* Position in directory search */
 
 	Bit8u fatSectBuffer[1024];
 	Bit32u curFatSect;
 };
 
-
 class cdromDrive : public localDrive
 {
 public:

src/shell/shell_cmds.cpp

@@ -1275,7 +1275,7 @@ void DOS_Shell::CMD_SUBST (char * args) {
 	
 		if( ( ldp=dynamic_cast<localDrive*>(Drives[drive])) == 0 ) throw 0;
 		char newname[CROSS_LEN];   
-		strcpy(newname, ldp->basedir);	   
+		strcpy(newname, ldp->getBasedir());
 		strcat(newname,fulldir);
 		CROSS_FILENAME(newname);
 		ldp->dirCache.ExpandName(newname);