feat(free_bloc function added)

tpfs/vol.c

@@ -218,3 +218,15 @@ unsigned int new_bloc()
 
     return new_bloc;
 }
+
+void free_bloc(unsigned int bloc)
+{
+    unsigned char buffer[sizeof(vblockchain_t)];
+    vblockchain_t blockchain;
+
+    blockchain.next = super.first_free;
+    super.first_free = bloc;
+
+    memcpy(buffer, &blockchain, sizeof(vblockchain_t));
+    write_bloc(super.id, bloc, buffer);
+}
\ No newline at end of file

tpfs/vol.h

@@ -63,5 +63,6 @@ void init_volume(unsigned int vol);
 int load_super(unsigned int vol);
 void save_super();
 unsigned int new_bloc();
+void free_bloc(unsigned int bloc);
 
 #endif