mod_bitmap

kernel/memory.c

@@ -11,14 +11,13 @@
 // which is (2^32)*BLOCK_SIZE blocks
 // and with a blocksize of 1024, we git around 4.3 trillion blocks
 // which is more than enough
-
 int bitmap = 0;
 
-enum bitmap_flag {
-	FREE,
-	ALLOC
-};
-
 void mod_bitmap(uint block, uint bit, uint bflag) {
-	
+	// create a bitmask that will be applied to the bitmap
+	int bitmask = 1 << bit;
+
+	// apply the bitmask, resulting in the bit:n bit will bet 
+	// set to bflag
+	bitmap = (((bitmap & ~bitmask)) | (bflag << bit));
 }