From 05e8ae6b8fd960b2d9d3dafb34263fe7bd1cb90b Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@portege.(none)>
Date: Mon, 21 Sep 2009 18:27:59 +0800
Subject: [PATCH 1/1] Disabled debug in ld-acess.so/loadlib Added COW support
 to MM_SetFlags

---
 Kernel/arch/x86/mm_virt.c                    | 13 +++++++++++++
 Usermode/Libraries/ld-acess.so_src/elf.c     |  6 +++---
 Usermode/Libraries/ld-acess.so_src/lib.c     |  2 +-
 Usermode/Libraries/ld-acess.so_src/loadlib.c |  7 ++++---
 4 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/Kernel/arch/x86/mm_virt.c b/Kernel/arch/x86/mm_virt.c
index b4fd2225..6fa491b8 100644
--- a/Kernel/arch/x86/mm_virt.c
+++ b/Kernel/arch/x86/mm_virt.c
@@ -524,6 +524,19 @@ void MM_SetFlags(Uint VAddr, Uint Flags, Uint Mask)
 		if( Flags & MM_PFLAG_KERNEL )	*ent &= ~PF_USER;
 		else	*ent |= PF_USER;
 	}
+	
+	// Copy-On-Write
+	if( Mask & MM_PFLAG_COW )
+	{
+		if( Flags & MM_PFLAG_COW ) {
+			*ent &= ~PF_WRITE;
+			*ent |= PF_COW;
+		}
+		else {
+			*ent &= ~PF_COW;
+			*ent |= PF_WRITE;
+		}
+	}
 }
 
 /**
diff --git a/Usermode/Libraries/ld-acess.so_src/elf.c b/Usermode/Libraries/ld-acess.so_src/elf.c
index 56f75e2b..b399f49b 100644
--- a/Usermode/Libraries/ld-acess.so_src/elf.c
+++ b/Usermode/Libraries/ld-acess.so_src/elf.c
@@ -1,7 +1,7 @@
 /*
- AcessOS 1 - Dynamic Loader
- By thePowersGang
-*/
+ * AcessOS 1 - Dynamic Loader
+ * By thePowersGang
+ */
 #include "common.h"
 #include "elf32.h"
 
diff --git a/Usermode/Libraries/ld-acess.so_src/lib.c b/Usermode/Libraries/ld-acess.so_src/lib.c
index d327213f..0d01dc2a 100644
--- a/Usermode/Libraries/ld-acess.so_src/lib.c
+++ b/Usermode/Libraries/ld-acess.so_src/lib.c
@@ -17,7 +17,7 @@ void strcpy(char *dest, char *src)
 
 int strcmp(char *s1, char *s2)
 {
-	while(*s1 == *s2 && *s1 != 0) s1++,s2++;
+	while(*s1 && *s1 == *s2) s1++,s2++;
 	return *s1-*s2;
 }
 
diff --git a/Usermode/Libraries/ld-acess.so_src/loadlib.c b/Usermode/Libraries/ld-acess.so_src/loadlib.c
index 54d4c475..25fcc1a4 100644
--- a/Usermode/Libraries/ld-acess.so_src/loadlib.c
+++ b/Usermode/Libraries/ld-acess.so_src/loadlib.c
@@ -70,16 +70,17 @@ Uint LoadLibrary(char *filename, char *SearchDir, char **envp)
 Uint IsFileLoaded(char *file)
 {
 	 int	i;
-	DEBUGS("IsFileLoaded: (file='%s')\n", file);
+	DEBUGS("IsFileLoaded: (file='%s')", file);
 	for( i = 0; i < MAX_LOADED_LIBRARIES; i++ )
 	{
 		if(gLoadedLibraries[i].Base == 0)	break;	// Last entry has Base set to NULL
+		DEBUGS(" strcmp('%s', '%s')", gLoadedLibraries[i].Name, file);
 		if(strcmp(gLoadedLibraries[i].Name, file) == 0) {
-			DEBUGS("IsFileLoaded: Found %i (0x%x)\n", i, gLoadedLibraries[i].Base);
+			DEBUGS("IsFileLoaded: Found %i (0x%x)", i, gLoadedLibraries[i].Base);
 			return gLoadedLibraries[i].Base;
 		}
 	}
-	DEBUGS("IsFileLoaded: Not Found\n");
+	DEBUGS("IsFileLoaded: Not Found");
 	return 0;
 }
 
-- 
2.20.1