Added I/O sync through ioctl for linux

includes/disk.h

@@ -78,7 +78,17 @@ namespace fpio {
         } bControlIn;
     };
 
-    class disk: public errorbase {
+
+    //
+    // Disk I/O Class
+    //
+    // This class provides the required I/O interface with the floppy disk
+    // file or block device. It provides a memory-mapped structure with 
+    // real-time communication with the other end.
+    //
+    class disk: 
+        public errorbase 
+    {
     public:
 
         // Constructor/Destructor
@@ -95,7 +105,8 @@ namespace fpio {
 
     private:
 
-        int     fd;         // File descriptor
+        int                 fd;         // File descriptor
+        bool                useDevice;  // Use device I/O (ioctl when needed) instead of file I/O
 
     };
 

src/disk.cpp

@@ -32,6 +32,10 @@
 #include <errno.h>
 #include <string.h>
 
+#if defined __linux__
+#include <linux/fd.h>
+#endif
+
 #include "../includes/disk.h"
 
 using namespace fpio;
@@ -44,6 +48,7 @@ disk::disk(const char * file, int flags) {
     this->useExceptions=true;
     this->clear();
     this->fd=0;
+    this->useDevice=false;
 
     // Prepare the open flags
     int oflags = O_RDWR | O_SYNC;
@@ -59,6 +64,9 @@ disk::disk(const char * file, int flags) {
         oflags |= O_DIRECT; // Non-posix
         #endif
 
+        // Enable device access
+        this->useDevice=true;
+
     }
 
     // Open the file
@@ -114,6 +122,12 @@ void disk::reset() {
 void disk::sync() {
     if (!this->ready()) return;
     msync(this->map, SZ_FLOPPY, MS_SYNC | MS_INVALIDATE);
+#if defined __linux__
+    if (this->useDevice) {
+        ioctl(this->fd, FDFLUSH, 0);
+    }
+#endif
+
 };
 
 bool disk::ready() {