From be3bcbb878cf110be531a9fea17811fcb55f0e95 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Tue, 20 Sep 2016 17:36:36 -0600
Subject: [PATCH] Add function for getting mapped page flags
---
arch/x86_64/src/paging/mapper.rs | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/x86_64/src/paging/mapper.rs b/arch/x86_64/src/paging/mapper.rs
index 5b7665a3f..819efa9b3 100644
--- a/arch/x86_64/src/paging/mapper.rs
+++ b/arch/x86_64/src/paging/mapper.rs
@@ -93,6 +93,13 @@ impl Mapper {
.and_then(|p1| p1[page.p1_index()].pointed_frame())
}
+ pub fn translate_page_flags(&self, page: Page) -> Option<EntryFlags> {
+ self.p4().next_table(page.p4_index())
+ .and_then(|p3| p3.next_table(page.p3_index()))
+ .and_then(|p2| p2.next_table(page.p2_index()))
+ .and_then(|p1| Some(p1[page.p1_index()].flags()))
+ }
+
/// Translate a virtual address to a physical one
pub fn translate(&self, virtual_address: VirtualAddress) -> Option<PhysicalAddress> {
let offset = virtual_address.get() % PAGE_SIZE;
--
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