vmm: vmm_tophyical()

src/include/kernel/vmm.h

@@ -55,8 +55,8 @@ typedef struct {
 } vmm_context;
 
 void 		vmm_init();
-
 void 		vmm_destroy(vmm_context* ctx);
+void*		vmm_tophysical(void* addr);
 bool 		vmm_dealwithrequest(void* addr, long error, bool user);
 bool 		vmm_setused(void* addr, size_t pagec, size_t mmuflags);
 bool		vmm_unmap(void* addr, size_t pagec);

src/sys/mm/vmm.c

@@ -701,7 +701,7 @@ bool vmm_dealwithrequest(void* addr, long error, bool user){
 	if(map->type == VMM_TYPE_FILE){ // TODO check for errors?
 		int err;
 		size_t offset = addr - map->start;
-		vfs_read(&err, map->data, addr, PAGE_SIZE, map->offset + offset);
+		vfs_read(&err, map->data, addr, PAGE_SIZE, map->offset + offset, NULL);
 	}
 	
 	status = true;
@@ -714,6 +714,25 @@ bool vmm_dealwithrequest(void* addr, long error, bool user){
 
 }
 
+void* vmm_tophysical(void* addr){
+	
+	int* lock;
+        vmm_mapping** start = NULL;
+
+        getcontextinfo(addr, &lock, &start);
+
+	spinlock_acquire(lock);
+
+	int pageoffset = (uintptr_t)addr % PAGE_SIZE;
+        void* virtpage = addr - pageoffset;
+        void* phypage = arch_mmu_getphysicaladdr(arch_getcls()->context->context, virtpage);
+
+	spinlock_release(lock);
+
+	return phypage + pageoffset;
+
+}
+
 void vmm_switchcontext(vmm_context* context){
 	if(arch_getcls()->thread)
 		arch_getcls()->thread->ctx = context;