diff --git a/kernel-src/include/kernel/iovec.h b/kernel-src/include/kernel/iovec.h
index a51ffa55..8dec9fcf 100644
--- a/kernel-src/include/kernel/iovec.h
+++ b/kernel-src/include/kernel/iovec.h
@@ -44,6 +44,10 @@ int iovec_iterator_copy_to_buffer(iovec_iterator_t *iovec_iterator, void *buffer
 // NOTE: the iovec can have userspace addresses. in this case, the copy can possibly fail with EFAULT
 int iovec_iterator_copy_from_buffer(iovec_iterator_t *iovec_iterator, void *buffer, size_t byte_count);
 
+// sets byte_count bytes in the iovec_iterator to byte
+// NOTE: the iovec can have userspace addresses. in this case, the memset can possibly fail with EFAULT
+int iovec_iterator_memset(iovec_iterator_t *iovec_iterator, uint8_t byte, size_t byte_count);
+
 // copies byte_count bytes from the iovec_iterator into the ringbuffer
 // returns the number of bytes copied
 // NOTE: the iovec can have userspace addresses. in this case, the copy can possibly fail by returning RINGBUFFER_USER_COPY_FAILED
diff --git a/kernel-src/io/iovec.c b/kernel-src/io/iovec.c
index 9e9e5edb..7d3af8cd 100644
--- a/kernel-src/io/iovec.c
+++ b/kernel-src/io/iovec.c
@@ -70,17 +70,19 @@ size_t iovec_iterator_set(iovec_iterator_t *iovec_iterator, size_t offset) {
 int iovec_iterator_copy_to_buffer(iovec_iterator_t *iovec_iterator, void *buffer, size_t byte_count) {
 	size_t iterator_offset_save = iovec_iterator->total_offset;
 	size_t remaining_total = min(byte_count, iovec_iterator->total_size - iovec_iterator->total_offset);
+	size_t total_done = 0;
 	int error = 0;
 
 	for (;;) {
 		size_t remaining_current = iovec_iterator->current->len - iovec_iterator->current_offset;
 		size_t copy_current = min(remaining_current, remaining_total);
 
-		error = USERCOPY_POSSIBLY_FROM_USER(buffer, (void *)((uintptr_t)iovec_iterator->current->addr + iovec_iterator->current_offset), copy_current);
+		error = USERCOPY_POSSIBLY_FROM_USER((void *)((uintptr_t)buffer + total_done), (void *)((uintptr_t)iovec_iterator->current->addr + iovec_iterator->current_offset), copy_current);
 		if (error)
 			break;
 
 		iovec_iterator_skip(iovec_iterator, copy_current);
+		total_done += copy_current;
 		remaining_total -= copy_current;
 
 		if (iovec_iterator_finished(iovec_iterator) || remaining_total == 0)
@@ -96,13 +98,41 @@ int iovec_iterator_copy_to_buffer(iovec_iterator_t *iovec_iterator, void *buffer
 int iovec_iterator_copy_from_buffer(iovec_iterator_t *iovec_iterator, void *buffer, size_t byte_count) {
 	size_t iterator_offset_save = iovec_iterator->total_offset;
 	size_t remaining_total = min(byte_count, iovec_iterator->total_size - iovec_iterator->total_offset);
+	size_t total_done = 0;
 	int error = 0;
 
 	for (;;) {
 		size_t remaining_current = iovec_iterator->current->len - iovec_iterator->current_offset;
 		size_t copy_current = min(remaining_current, remaining_total);
 
-		error = USERCOPY_POSSIBLY_FROM_USER((void *)((uintptr_t)iovec_iterator->current->addr + iovec_iterator->current_offset), buffer, copy_current);
+		error = USERCOPY_POSSIBLY_FROM_USER((void *)((uintptr_t)iovec_iterator->current->addr + iovec_iterator->current_offset), (void *)((uintptr_t)buffer + total_done), copy_current);
+		if (error)
+			break;
+
+		iovec_iterator_skip(iovec_iterator, copy_current);
+		total_done += copy_current;
+		remaining_total -= copy_current;
+
+		if (iovec_iterator_finished(iovec_iterator) || remaining_total == 0)
+			break;
+	}
+
+	if (error)
+		iovec_iterator_set(iovec_iterator, iterator_offset_save);
+
+	return error;
+}
+
+int iovec_iterator_memset(iovec_iterator_t *iovec_iterator, uint8_t byte, size_t byte_count) {
+	size_t iterator_offset_save = iovec_iterator->total_offset;
+	size_t remaining_total = min(byte_count, iovec_iterator->total_size - iovec_iterator->total_offset);
+	int error = 0;
+
+	for (;;) {
+		size_t remaining_current = iovec_iterator->current->len - iovec_iterator->current_offset;
+		size_t copy_current = min(remaining_current, remaining_total);
+
+		error = USERCOPY_POSSIBLY_MEMSET_TO_USER((void *)((uintptr_t)iovec_iterator->current->addr + iovec_iterator->current_offset), byte, copy_current);
 		if (error)
 			break;