X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Fmm_virt.c;h=aaec06ea1ae93355acd4de050cfc0bf70329700f;hb=e7d03978fb7c0c6ab1250e56e73afba9ffb89923;hp=cbf03fc68a3966348c9957fc1958cb0f0bebb890;hpb=43f12a083f112a410859597c5f45e78b1de2e7c8;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/mm_virt.c b/Kernel/arch/x86/mm_virt.c
index cbf03fc6..aaec06ea 100644
--- a/Kernel/arch/x86/mm_virt.c
+++ b/Kernel/arch/x86/mm_virt.c
@@ -413,22 +413,6 @@ tPAddr MM_GetPhysAddr(tVAddr Addr)
 	return (gaPageTable[Addr >> 12] & ~0xFFF) | (Addr & 0xFFF);
 }
 
-
-/**
- * \fn int MM_IsUser(tVAddr VAddr)
- * \brief Checks if a page is user accessable
- */
-int MM_IsUser(tVAddr VAddr)
-{
-	if( !(gaPageDir[VAddr >> 22] & 1) )
-		return 0;
-	if( !(gaPageTable[VAddr >> 12] & 1) )
-		return 0;
-	if( !(gaPageTable[VAddr >> 12] & PF_USER) )
-		return 0;
-	return 1;
-}
-
 /**
  * \fn void MM_SetCR3(Uint CR3)
  * \brief Sets the current process space
@@ -827,6 +811,30 @@ void MM_SetFlags(tVAddr VAddr, Uint Flags, Uint Mask)
 	//	*ent, VAddr >> 22, gaPageDir[VAddr >> 22]);
 }
 
+/**
+ * \brief Get the flags on a page
+ */
+Uint MM_GetFlags(tVAddr VAddr)
+{
+	tTabEnt	*ent;
+	Uint	ret = 0;
+	
+	// Validity Check
+	if( !(gaPageDir[VAddr >> 22] & 1) )	return 0;
+	if( !(gaPageTable[VAddr >> 12] & 1) )	return 0;
+	
+	ent = &gaPageTable[VAddr >> 12];
+	
+	// Read-Only
+	if( !(*ent & PF_WRITE) )	ret |= MM_PFLAG_RO;
+	// Kernel
+	if( !(*ent & PF_USER) )	ret |= MM_PFLAG_KERNEL;
+	// Copy-On-Write
+	if( *ent & PF_COW )	ret |= MM_PFLAG_COW;
+	
+	return ret;
+}
+
 /**
  * \fn tPAddr MM_DuplicatePage(tVAddr VAddr)
  * \brief Duplicates a virtual page to a physical one