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Fix test failure of kernel32/loader when WRITECOPY protection is enabled (fixes issue 88).

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This commit is contained in:
Sebastian Lackner
2014-10-19 08:54:16 +02:00
parent 2dcb4d2c27
commit c554fa8396
4 changed files with 16 additions and 16 deletions
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16
patches/ntdll-WRITECOPY/0004-ntdll-Properly-handle-PAGE_WRITECOPY-protection.patch
View File

@@ -1,4 +1,4 @@
From b9feb57a3a271cc42e37707a9b5ecac51cc70269 Mon Sep 17 00:00:00 2001
From 0596c2b03fa72a5159fa5a9df3e909e925d6144f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Sat, 4 Oct 2014 02:56:08 +0200
Subject: ntdll: Properly handle PAGE_WRITECOPY protection.
@@ -9,10 +9,10 @@ Subject: ntdll: Properly handle PAGE_WRITECOPY protection.
2 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/dlls/kernel32/tests/virtual.c b/dlls/kernel32/tests/virtual.c
index 0955d30..5b81e38 100644
index 73b753e..5797805 100644
--- a/dlls/kernel32/tests/virtual.c
+++ b/dlls/kernel32/tests/virtual.c
@@ -2038,11 +2038,7 @@ todo_wine
@@ -2786,11 +2786,7 @@ todo_wine
SetLastError(0xdeadbeef);
ret = VirtualQuery(base, &info, sizeof(info));
ok(ret, "VirtualQuery failed %d\n", GetLastError());
@@ -25,7 +25,7 @@ index 0955d30..5b81e38 100644
}
}
else
@@ -2056,11 +2052,7 @@ todo_wine
@@ -2804,11 +2800,7 @@ todo_wine
SetLastError(0xdeadbeef);
ret = VirtualProtect(base, si.dwPageSize, PAGE_NOACCESS, &old_prot);
ok(ret, "%d: VirtualProtect error %d\n", i, GetLastError());
@@ -39,7 +39,7 @@ index 0955d30..5b81e38 100644
UnmapViewOfFile(base);
diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index f8a5dd3..47654f4 100644
index 4c4c05d..d26fe26 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -179,8 +179,13 @@ static int VIRTUAL_GetUnixProt( BYTE vprot )
@@ -49,7 +49,7 @@ index f8a5dd3..47654f4 100644
- if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
+#if defined(__i386__)
+ if (vprot & VPROT_WRITECOPY) prot &= ~PROT_WRITE;
+ if (vprot & VPROT_WRITECOPY) prot = (prot & ~PROT_WRITE) | PROT_READ;
+#else
+ /* FIXME: Architecture needs implementation of signal_init_early. */
+ if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
@@ -57,7 +57,7 @@ index f8a5dd3..47654f4 100644
if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
}
if (!prot) prot = PROT_NONE;
@@ -1522,13 +1527,18 @@ NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
@@ -1532,13 +1537,18 @@ NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
{
void *page = ROUND_ADDR( addr, page_mask );
BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
@@ -79,5 +79,5 @@ index f8a5dd3..47654f4 100644
if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
}
--
2.1.1
2.1.2

10
patches/ntdll-WRITECOPY/0005-ntdll-Only-enable-true-WRITECOPY-protection-when-a-s.patch
View File

@@ -1,4 +1,4 @@
From 41b7ce7f165e3e3c02e1aa6067f66feeef41d234 Mon Sep 17 00:00:00 2001
From 566ff0e978e59354160a1d2cdde79cb9e5ead244 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Sat, 4 Oct 2014 03:22:09 +0200
Subject: ntdll: Only enable true WRITECOPY protection when a special
@@ -9,7 +9,7 @@ Subject: ntdll: Only enable true WRITECOPY protection when a special
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index 47654f4..6fad8f7 100644
index d26fe26..02e32fb 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -166,6 +166,21 @@ static const char *VIRTUAL_GetProtStr( BYTE prot )
@@ -38,11 +38,11 @@ index 47654f4..6fad8f7 100644
if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
#if defined(__i386__)
- if (vprot & VPROT_WRITECOPY) prot &= ~PROT_WRITE;
- if (vprot & VPROT_WRITECOPY) prot = (prot & ~PROT_WRITE) | PROT_READ;
+ if (vprot & VPROT_WRITECOPY)
+ {
+ if (experimental_WRITECOPY())
+ prot &= ~PROT_WRITE;
+ prot = (prot & ~PROT_WRITE) | PROT_READ;
+ else
+ prot |= PROT_WRITE | PROT_READ;
+ }
@@ -50,5 +50,5 @@ index 47654f4..6fad8f7 100644
/* FIXME: Architecture needs implementation of signal_init_early. */
if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
--
2.1.1
2.1.2

2
patches/ntdll-WRITECOPY/definition
View File

@@ -1,4 +1,4 @@
Author: Michael Müller
Subject: Change WRITECOPY memory protection to WRITE on first write.
Revision: 3
Revision: 4
Fixes: [29384] Voobly expects correct handling of WRITECOPY memory protection