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wine-staging/patches/ntdll-HashLinks/0001-ntdll-Implement-HashLinks-field-in-LDR-module-data.patch

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From e9ae5fa171bfea7b44946f6ac3d3205d53a72904 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Mon, 3 Apr 2017 05:30:27 +0200
Subject: ntdll: Implement HashLinks field in LDR module data.
---
dlls/kernel32/tests/loader.c | 75 ++++++++++++++++++++++++++++++++++++++++++++
dlls/ntdll/loader.c | 63 +++++++++++++++++++++++++++++++++++--
include/winternl.h | 6 ++--
3 files changed, 140 insertions(+), 4 deletions(-)
diff --git a/dlls/kernel32/tests/loader.c b/dlls/kernel32/tests/loader.c
index a74647b3d4..dc7b92deae 100644
--- a/dlls/kernel32/tests/loader.c
+++ b/dlls/kernel32/tests/loader.c
@@ -28,6 +28,7 @@
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
+#include "winuser.h"
#include "wine/test.h"
#include "delayloadhandler.h"
@@ -3043,6 +3044,79 @@ static void test_InMemoryOrderModuleList(void)
ok(entry2 == mark2, "expected entry2 == mark2, got %p and %p\n", entry2, mark2);
}
+static inline WCHAR toupperW(WCHAR c)
+{
+ WCHAR tmp = c;
+ CharUpperBuffW(&tmp, 1);
+ return tmp;
+}
+
+static ULONG hash_basename(const WCHAR *basename)
+{
+ WORD version = MAKEWORD(NtCurrentTeb()->Peb->OSMinorVersion,
+ NtCurrentTeb()->Peb->OSMajorVersion);
+ ULONG hash = 0;
+
+ if (version >= 0x0602)
+ {
+ for (; *basename; basename++)
+ hash = hash * 65599 + toupperW(*basename);
+ }
+ else if (version == 0x0601)
+ {
+ for (; *basename; basename++)
+ hash = hash + 65599 * toupperW(*basename);
+ }
+ else
+ hash = toupperW(basename[0]) - 'A';
+
+ return hash & 31;
+}
+
+static void test_HashLinks(void)
+{
+ static WCHAR ntdllW[] = {'n','t','d','l','l','.','d','l','l',0};
+ static WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
+
+ LIST_ENTRY *hash_map, *entry, *mark;
+ LDR_MODULE *module;
+ BOOL found;
+
+ entry = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
+ entry = entry->Flink;
+
+ module = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
+ entry = module->HashLinks.Blink;
+
+ hash_map = entry - hash_basename(module->BaseDllName.Buffer);
+
+ mark = &hash_map[hash_basename(ntdllW)];
+ found = FALSE;
+ for (entry = mark->Flink; entry != mark; entry = entry->Flink)
+ {
+ module = CONTAINING_RECORD(entry, LDR_MODULE, HashLinks);
+ if (!lstrcmpiW(module->BaseDllName.Buffer, ntdllW))
+ {
+ found = TRUE;
+ break;
+ }
+ }
+ ok(found, "Could not find ntdll\n");
+
+ mark = &hash_map[hash_basename(kernel32W)];
+ found = FALSE;
+ for (entry = mark->Flink; entry != mark; entry = entry->Flink)
+ {
+ module = CONTAINING_RECORD(entry, LDR_MODULE, HashLinks);
+ if (!lstrcmpiW(module->BaseDllName.Buffer, kernel32W))
+ {
+ found = TRUE;
+ break;
+ }
+ }
+ ok(found, "Could not find kernel32\n");
+}
+
START_TEST(loader)
{
int argc;
@@ -3104,4 +3178,5 @@ START_TEST(loader)
test_import_resolution();
test_ExitProcess();
test_InMemoryOrderModuleList();
+ test_HashLinks();
}
diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index 97cde88354..d9b6b7d1c7 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -82,6 +82,9 @@ static const char * const reason_names[] =
static const WCHAR dllW[] = {'.','d','l','l',0};
+#define HASH_MAP_SIZE 32
+static LIST_ENTRY hash_table[HASH_MAP_SIZE];
+
/* internal representation of 32bit modules. per process. */
typedef struct _wine_modref
{
@@ -159,7 +162,6 @@ static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
while (len--) *dst++ = (unsigned char)*src++;
}
-
/*************************************************************************
* call_dll_entry_point
*
@@ -424,6 +426,51 @@ static BOOL load_mscoree( void )
return TRUE;
}
+/*************************************************************************
+ * hash_basename
+ *
+ * Calculates the bucket index of a dll using the basename.
+ */
+static ULONG hash_basename(const WCHAR *basename)
+{
+ WORD version = MAKEWORD(NtCurrentTeb()->Peb->OSMinorVersion,
+ NtCurrentTeb()->Peb->OSMajorVersion);
+ ULONG hash = 0;
+
+ if (version >= 0x0602)
+ {
+ for (; *basename; basename++)
+ hash = hash * 65599 + toupperW(*basename);
+ }
+ else if (version == 0x0601)
+ {
+ for (; *basename; basename++)
+ hash = hash + 65599 * toupperW(*basename);
+ }
+ else
+ hash = toupperW(basename[0]) - 'A';
+
+ return hash & (HASH_MAP_SIZE-1);
+}
+
+/*************************************************************************
+ * recompute_hash_maps
+ *
+ * Recomputes the LDR hash map (necessary when windows version changes).
+ */
+static void recompute_hash_map(void)
+{
+ PLIST_ENTRY mark, entry;
+ PLDR_MODULE mod;
+
+ mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
+ for (entry = mark->Flink; entry != mark; entry = entry->Flink)
+ {
+ mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
+ RemoveEntryList( &mod->HashLinks );
+ InsertTailList( &hash_table[hash_basename(mod->BaseDllName.Buffer)], &mod->HashLinks );
+ }
+}
/*************************************************************************
* get_modref
@@ -1054,7 +1101,6 @@ static WINE_MODREF *alloc_module( HMODULE hModule, LPCWSTR filename, LPCWSTR fak
wm->ldr.TlsIndex = -1;
wm->ldr.LoadCount = 1;
wm->ldr.SectionHandle = NULL;
- wm->ldr.CheckSum = 0;
wm->ldr.TimeDateStamp = 0;
wm->ldr.ActivationContext = 0;
@@ -1075,6 +1121,8 @@ static WINE_MODREF *alloc_module( HMODULE hModule, LPCWSTR filename, LPCWSTR fak
&wm->ldr.InLoadOrderModuleList);
InsertTailList(&NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList,
&wm->ldr.InMemoryOrderModuleList);
+ InsertTailList(&hash_table[hash_basename(wm->ldr.BaseDllName.Buffer)],
+ &wm->ldr.HashLinks);
/* wait until init is called for inserting into this list */
wm->ldr.InInitializationOrderModuleList.Flink = NULL;
@@ -1877,6 +1925,7 @@ static void load_builtin_callback( void *module, const char *filename )
/* the module has only be inserted in the load & memory order lists */
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
+ RemoveEntryList(&wm->ldr.HashLinks);
/* FIXME: free the modref */
builtin_load_info->status = STATUS_DLL_NOT_FOUND;
return;
@@ -2091,6 +2140,7 @@ static NTSTATUS load_native_dll( LPCWSTR load_path, LPCWSTR name, LPCWSTR fakemo
/* the module has only be inserted in the load & memory order lists */
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
+ RemoveEntryList(&wm->ldr.HashLinks);
/* FIXME: there are several more dangling references
* left. Including dlls loaded by this dll before the
@@ -3217,6 +3267,7 @@ static void free_modref( WINE_MODREF *wm )
{
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
+ RemoveEntryList(&wm->ldr.HashLinks);
if (wm->ldr.InInitializationOrderModuleList.Flink)
RemoveEntryList(&wm->ldr.InInitializationOrderModuleList);
@@ -3507,6 +3558,9 @@ void WINAPI LdrInitializeThunk( void *kernel_start, ULONG_PTR unknown2,
RemoveEntryList( &wm->ldr.InMemoryOrderModuleList );
InsertHeadList( &peb->LdrData->InMemoryOrderModuleList, &wm->ldr.InMemoryOrderModuleList );
+ /* the windows version was not set yet when ntdll and kernel32 were loaded */
+ recompute_hash_map();
+
if ((status = virtual_alloc_thread_stack( NtCurrentTeb(), 0, 0 )) != STATUS_SUCCESS) goto error;
if ((status = server_init_process_done()) != STATUS_SUCCESS) goto error;
@@ -3710,6 +3764,7 @@ void __wine_process_init(void)
NTSTATUS status;
ANSI_STRING func_name;
void (* DECLSPEC_NORETURN CDECL init_func)(void);
+ DWORD i;
main_exe_file = thread_init();
@@ -3719,6 +3774,10 @@ void __wine_process_init(void)
load_global_options();
+ /* initialize hash table */
+ for (i = 0; i < HASH_MAP_SIZE; i++)
+ InitializeListHead(&hash_table[i]);
+
/* setup the load callback and create ntdll modref */
wine_dll_set_callback( load_builtin_callback );
diff --git a/include/winternl.h b/include/winternl.h
index 2685137d6a..d6f47ad3ba 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -2171,8 +2171,7 @@ typedef struct _LDR_MODULE
ULONG Flags;
SHORT LoadCount;
SHORT TlsIndex;
- HANDLE SectionHandle;
- ULONG CheckSum;
+ LIST_ENTRY HashLinks;
ULONG TimeDateStamp;
HANDLE ActivationContext;
PVOID PatchInformation;
@@ -2182,6 +2181,9 @@ typedef struct _LDR_MODULE
PVOID ContextInformation;
ULONG_PTR OriginalBase;
LARGE_INTEGER LoadTime;
+
+ /* Not part of Win7 but used by Wine */
+ HANDLE SectionHandle;
} LDR_MODULE, *PLDR_MODULE;
/* those defines are (some of the) regular LDR_MODULE.Flags values */
--
2.11.0
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