From 6d0a0443fecef518e4a01af5d6dad5a098999560 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sun, 22 Aug 2021 16:08:17 +0200
Subject: virt_iter: count bytes that were already iterated over

---
 src/kernel/mem.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/kernel/mem.c')

diff --git a/src/kernel/mem.c b/src/kernel/mem.c
index 7c1c640..aed2ff9 100644
--- a/src/kernel/mem.c
+++ b/src/kernel/mem.c
@@ -44,6 +44,8 @@ void virt_iter_new(
 		struct pagedir *pages, bool user, bool writeable)
 {
 	iter->frag       = 0;
+	iter->frag_len   = 0;
+	iter->prior      = 0;
 	iter->error      = false;
 	iter->_virt      = virt;
 	iter->_remaining = length;
@@ -60,6 +62,7 @@ bool virt_iter_next(struct virt_iter *iter) {
 
 	uintptr_t virt = (uintptr_t) iter->_virt;
 	size_t partial = iter->_remaining;
+	iter->prior   += iter->frag_len;
 	if (partial <= 0) return false;
 
 	// don't read past the page
-- 
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