From b988b821372466ed58eb1d2116bcbb158f70346c Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Tue, 24 Aug 2021 19:05:46 +0200
Subject: switch to using user_ptr for pointers coming from userland

this avoid accidental dereferences, and now it's easy to tell apart
which pointers are safe to directly read and which aren't.

cons:
- const is completely discarded
---
 src/kernel/proc.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/kernel/proc.h')

diff --git a/src/kernel/proc.h b/src/kernel/proc.h
index 87fed14..6de270b 100644
--- a/src/kernel/proc.h
+++ b/src/kernel/proc.h
@@ -11,7 +11,7 @@ enum process_state {
 };
 
 struct process {
-	void *stack_top;
+	user_ptr stack_top;
 	struct pagedir *pages;
 	struct registers regs;
 	enum process_state state;
@@ -25,7 +25,7 @@ struct process {
 	// meaning changes depending on the state
 	// PS_DEAD - death message
 	// PS_WAITS4CHILDDEATH - buffer for said message
-	void  *saved_addr;
+	user_ptr saved_addr;
 	size_t saved_len;
 
 	struct vfs_mount *mount;
-- 
cgit v1.2.3