iovec: iovec_iterator_total_offset

kernel-src/include/kernel/iovec.h

@@ -36,6 +36,9 @@ size_t iovec_iterator_skip(iovec_iterator_t *iovec_iterator, size_t skip_count);
 // sets the current offset of the iovec iterator to offset, returns the remaining number of bytes
 size_t iovec_iterator_set(iovec_iterator_t *iovec_iterator, size_t offset);
 
+// returns the offset that the iovec_iterator is on
+size_t iovec_iterator_total_offset(iovec_iterator_t *iovec_iterator);
+
 // copies byte_count bytes from the iovec_iterator into buffer
 // NOTE: the iovec can have userspace addresses. in this case, the copy can possibly fail with EFAULT
 int iovec_iterator_copy_to_buffer(iovec_iterator_t *iovec_iterator, void *buffer, size_t byte_count);

kernel-src/io/iovec.c

@@ -67,6 +67,10 @@ size_t iovec_iterator_set(iovec_iterator_t *iovec_iterator, size_t offset) {
 	return iovec_iterator_skip(iovec_iterator, offset);
 }
 
+size_t iovec_iterator_total_offset(iovec_iterator_t *iovec_iterator) {
+	return iovec_iterator->total_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);