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/*
* Loader functions
*
* Copyright 1995, 2003 Alexandre Julliard
* Copyright 2002 Dmitry Timoshkov for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "winreg.h"
#include "winternl.h"
#include "module.h"
#include "wine/exception.h"
#include "excpt.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "wine/server.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
WINE_DECLARE_DEBUG_CHANNEL(relay);
WINE_DECLARE_DEBUG_CHANNEL(snoop);
WINE_DECLARE_DEBUG_CHANNEL(loaddll);
typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
static int process_detaching = 0; /* set on process detach to avoid deadlocks with thread detach */
static int free_lib_count; /* recursion depth of LdrUnloadDll calls */
/* filter for page-fault exceptions */
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
static const char * const reason_names[] =
{
"PROCESS_DETACH",
"PROCESS_ATTACH",
"THREAD_ATTACH",
"THREAD_DETACH"
};
static const WCHAR dllW[] = {'.','d','l','l',0};
/* internal representation of 32bit modules. per process. */
typedef struct _wine_modref
{
LDR_MODULE ldr;
int nDeps;
struct _wine_modref **deps;
} WINE_MODREF;
/* info about the current builtin dll load */
/* used to keep track of things across the register_dll constructor call */
struct builtin_load_info
{
const WCHAR *load_path;
NTSTATUS status;
WINE_MODREF *wm;
};
static struct builtin_load_info default_load_info;
static struct builtin_load_info *builtin_load_info = &default_load_info;
static UINT tls_module_count; /* number of modules with TLS directory */
static UINT tls_total_size; /* total size of TLS storage */
static const IMAGE_TLS_DIRECTORY **tls_dirs; /* array of TLS directories */
static UNICODE_STRING system_dir; /* system directory */
static CRITICAL_SECTION loader_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &loader_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { 0, (DWORD)(__FILE__ ": loader_section") }
};
static CRITICAL_SECTION loader_section = { &critsect_debug, -1, 0, 0, 0, 0 };
static WINE_MODREF *cached_modref;
static WINE_MODREF *current_modref;
static NTSTATUS load_dll( LPCWSTR load_path, LPCWSTR libname, DWORD flags, WINE_MODREF** pwm );
static FARPROC find_named_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, const char *name, int hint );
/* convert PE image VirtualAddress to Real Address */
inline static void *get_rva( HMODULE module, DWORD va )
{
return (void *)((char *)module + va);
}
/* check whether the file name contains a path */
inline static int contains_path( LPCWSTR name )
{
return ((*name && (name[1] == ':')) || strchrW(name, '/') || strchrW(name, '\\'));
}
/* convert from straight ASCII to Unicode without depending on the current codepage */
inline static void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
{
while (len--) *dst++ = (unsigned char)*src++;
}
/*************************************************************************
* call_dll_entry_point
*
* Some brain-damaged dlls (ir32_32.dll for instance) modify ebx in
* their entry point, so we need a small asm wrapper.
*/
#ifdef __i386__
extern BOOL call_dll_entry_point( DLLENTRYPROC proc, void *module, UINT reason, void *reserved );
__ASM_GLOBAL_FUNC(call_dll_entry_point,
"pushl %ebp\n\t"
"movl %esp,%ebp\n\t"
"pushl %ebx\n\t"
"pushl 20(%ebp)\n\t"
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"movl 8(%ebp),%eax\n\t"
"call *%eax\n\t"
"leal -4(%ebp),%esp\n\t"
"popl %ebx\n\t"
"popl %ebp\n\t"
"ret" );
#else /* __i386__ */
static inline BOOL call_dll_entry_point( DLLENTRYPROC proc, void *module,
UINT reason, void *reserved )
{
return proc( module, reason, reserved );
}
#endif /* __i386__ */
/*************************************************************************
* get_modref
*
* Looks for the referenced HMODULE in the current process
* The loader_section must be locked while calling this function.
*/
static WINE_MODREF *get_modref( HMODULE hmod )
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
if (cached_modref && cached_modref->ldr.BaseAddress == hmod) return cached_modref;
mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
if (mod->BaseAddress == hmod)
return cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
if (mod->BaseAddress > (void*)hmod) break;
}
return NULL;
}
/**********************************************************************
* find_basename_module
*
* Find a module from its base name.
* The loader_section must be locked while calling this function
*/
static WINE_MODREF *find_basename_module( LPCWSTR name )
{
PLIST_ENTRY mark, entry;
if (cached_modref && !strcmpiW( name, cached_modref->ldr.BaseDllName.Buffer ))
return cached_modref;
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
if (!strcmpiW( name, mod->BaseDllName.Buffer ))
{
cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
return cached_modref;
}
}
return NULL;
}
/**********************************************************************
* find_fullname_module
*
* Find a module from its full path name.
* The loader_section must be locked while calling this function
*/
static WINE_MODREF *find_fullname_module( LPCWSTR name )
{
PLIST_ENTRY mark, entry;
if (cached_modref && !strcmpiW( name, cached_modref->ldr.FullDllName.Buffer ))
return cached_modref;
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
if (!strcmpiW( name, mod->FullDllName.Buffer ))
{
cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
return cached_modref;
}
}
return NULL;
}
/*************************************************************************
* find_forwarded_export
*
* Find the final function pointer for a forwarded function.
* The loader_section must be locked while calling this function.
*/
static FARPROC find_forwarded_export( HMODULE module, const char *forward )
{
IMAGE_EXPORT_DIRECTORY *exports;
DWORD exp_size;
WINE_MODREF *wm;
WCHAR mod_name[32];
char *end = strchr(forward, '.');
FARPROC proc = NULL;
if (!end) return NULL;
if ((end - forward) * sizeof(WCHAR) >= sizeof(mod_name) - sizeof(dllW)) return NULL;
ascii_to_unicode( mod_name, forward, end - forward );
memcpy( mod_name + (end - forward), dllW, sizeof(dllW) );
if (!(wm = find_basename_module( mod_name )))
{
ERR("module not found for forward '%s' used by %s\n",
forward, debugstr_w(get_modref(module)->ldr.FullDllName.Buffer) );
return NULL;
}
if ((exports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
proc = find_named_export( wm->ldr.BaseAddress, exports, exp_size, end + 1, -1 );
if (!proc)
{
ERR("function not found for forward '%s' used by %s."
" If you are using builtin %s, try using the native one instead.\n",
forward, debugstr_w(get_modref(module)->ldr.FullDllName.Buffer),
debugstr_w(get_modref(module)->ldr.BaseDllName.Buffer) );
}
return proc;
}
/*************************************************************************
* find_ordinal_export
*
* Find an exported function by ordinal.
* The exports base must have been subtracted from the ordinal already.
* The loader_section must be locked while calling this function.
*/
static FARPROC find_ordinal_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, int ordinal )
{
FARPROC proc;
DWORD *functions = get_rva( module, exports->AddressOfFunctions );
if (ordinal >= exports->NumberOfFunctions)
{
TRACE(" ordinal %ld out of range!\n", ordinal + exports->Base );
return NULL;
}
if (!functions[ordinal]) return NULL;
proc = get_rva( module, functions[ordinal] );
/* if the address falls into the export dir, it's a forward */
if (((char *)proc >= (char *)exports) && ((char *)proc < (char *)exports + exp_size))
return find_forwarded_export( module, (char *)proc );
if (TRACE_ON(snoop) && current_modref)
{
proc = SNOOP_GetProcAddress( module, exports, exp_size, proc, ordinal,
current_modref->ldr.BaseDllName.Buffer );
}
if (TRACE_ON(relay) && current_modref)
{
proc = RELAY_GetProcAddress( module, exports, exp_size, proc,
current_modref->ldr.BaseDllName.Buffer );
}
return proc;
}
/*************************************************************************
* find_named_export
*
* Find an exported function by name.
* The loader_section must be locked while calling this function.
*/
static FARPROC find_named_export( HMODULE module, IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, const char *name, int hint )
{
WORD *ordinals = get_rva( module, exports->AddressOfNameOrdinals );
DWORD *names = get_rva( module, exports->AddressOfNames );
int min = 0, max = exports->NumberOfNames - 1;
/* first check the hint */
if (hint >= 0 && hint <= max)
{
char *ename = get_rva( module, names[hint] );
if (!strcmp( ename, name ))
return find_ordinal_export( module, exports, exp_size, ordinals[hint] );
}
/* then do a binary search */
while (min <= max)
{
int res, pos = (min + max) / 2;
char *ename = get_rva( module, names[pos] );
if (!(res = strcmp( ename, name )))
return find_ordinal_export( module, exports, exp_size, ordinals[pos] );
if (res > 0) max = pos - 1;
else min = pos + 1;
}
return NULL;
}
/*************************************************************************
* import_dll
*
* Import the dll specified by the given import descriptor.
* The loader_section must be locked while calling this function.
*/
static WINE_MODREF *import_dll( HMODULE module, IMAGE_IMPORT_DESCRIPTOR *descr, LPCWSTR load_path )
{
NTSTATUS status;
WINE_MODREF *wmImp;
HMODULE imp_mod;
IMAGE_EXPORT_DIRECTORY *exports;
DWORD exp_size;
IMAGE_THUNK_DATA *import_list, *thunk_list;
WCHAR buffer[32];
char *name = get_rva( module, descr->Name );
DWORD len = strlen(name) + 1;
thunk_list = get_rva( module, (DWORD)descr->FirstThunk );
if (descr->u.OriginalFirstThunk)
import_list = get_rva( module, (DWORD)descr->u.OriginalFirstThunk );
else
import_list = thunk_list;
if (len * sizeof(WCHAR) <= sizeof(buffer))
{
ascii_to_unicode( buffer, name, len );
status = load_dll( load_path, buffer, 0, &wmImp );
}
else /* need to allocate a larger buffer */
{
WCHAR *ptr = RtlAllocateHeap( GetProcessHeap(), 0, len * sizeof(WCHAR) );
if (!ptr) return NULL;
ascii_to_unicode( ptr, name, len );
status = load_dll( load_path, ptr, 0, &wmImp );
RtlFreeHeap( GetProcessHeap(), 0, ptr );
}
if (status)
{
if (status == STATUS_DLL_NOT_FOUND)
ERR("Library %s (which is needed by %s) not found\n",
name, debugstr_w(current_modref->ldr.FullDllName.Buffer));
else
ERR("Loading library %s (which is needed by %s) failed (error %lx).\n",
name, debugstr_w(current_modref->ldr.FullDllName.Buffer), status);
return NULL;
}
imp_mod = wmImp->ldr.BaseAddress;
exports = RtlImageDirectoryEntryToData( imp_mod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size );
if (!exports)
{
/* set all imported function to deadbeef */
while (import_list->u1.Ordinal)
{
if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal))
{
ERR("No implementation for %s.%ld", name, IMAGE_ORDINAL(import_list->u1.Ordinal));
}
else
{
IMAGE_IMPORT_BY_NAME *pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData );
ERR("No implementation for %s.%s", name, pe_name->Name );
}
ERR(" imported from %s, setting to 0xdeadbeef\n",
debugstr_w(current_modref->ldr.FullDllName.Buffer) );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
import_list++;
thunk_list++;
}
return wmImp;
}
while (import_list->u1.Ordinal)
{
if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal))
{
int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
thunk_list->u1.Function = (PDWORD)find_ordinal_export( imp_mod, exports, exp_size,
ordinal - exports->Base );
if (!thunk_list->u1.Function)
{
ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
name, ordinal, debugstr_w(current_modref->ldr.FullDllName.Buffer) );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
TRACE("--- Ordinal %s.%d = %p\n", name, ordinal, thunk_list->u1.Function );
}
else /* import by name */
{
IMAGE_IMPORT_BY_NAME *pe_name;
pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData );
thunk_list->u1.Function = (PDWORD)find_named_export( imp_mod, exports, exp_size,
pe_name->Name, pe_name->Hint );
if (!thunk_list->u1.Function)
{
ERR("No implementation for %s.%s imported from %s, setting to 0xdeadbeef\n",
name, pe_name->Name, debugstr_w(current_modref->ldr.FullDllName.Buffer) );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
TRACE("--- %s %s.%d = %p\n", pe_name->Name, name, pe_name->Hint, thunk_list->u1.Function);
}
import_list++;
thunk_list++;
}
return wmImp;
}
/****************************************************************
* fixup_imports
*
* Fixup all imports of a given module.
* The loader_section must be locked while calling this function.
*/
static NTSTATUS fixup_imports( WINE_MODREF *wm, LPCWSTR load_path )
{
int i, nb_imports;
IMAGE_IMPORT_DESCRIPTOR *imports;
WINE_MODREF *prev;
DWORD size;
NTSTATUS status;
if (!(imports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_IMPORT, &size )))
return STATUS_SUCCESS;
nb_imports = size / sizeof(*imports);
for (i = 0; i < nb_imports; i++)
{
if (!imports[i].Name)
{
nb_imports = i;
break;
}
}
if (!nb_imports) return STATUS_SUCCESS; /* no imports */
/* Allocate module dependency list */
wm->nDeps = nb_imports;
wm->deps = RtlAllocateHeap( GetProcessHeap(), 0, nb_imports*sizeof(WINE_MODREF *) );
/* load the imported modules. They are automatically
* added to the modref list of the process.
*/
prev = current_modref;
current_modref = wm;
status = STATUS_SUCCESS;
for (i = 0; i < nb_imports; i++)
{
if (!(wm->deps[i] = import_dll( wm->ldr.BaseAddress, &imports[i], load_path )))
status = STATUS_DLL_NOT_FOUND;
}
current_modref = prev;
return status;
}
/*************************************************************************
* alloc_module
*
* Allocate a WINE_MODREF structure and add it to the process list
* The loader_section must be locked while calling this function.
*/
static WINE_MODREF *alloc_module( HMODULE hModule, LPCWSTR filename )
{
WINE_MODREF *wm;
WCHAR *p;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader(hModule);
PLIST_ENTRY entry, mark;
if (!(wm = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*wm) ))) return NULL;
wm->nDeps = 0;
wm->deps = NULL;
wm->ldr.BaseAddress = hModule;
wm->ldr.EntryPoint = NULL;
wm->ldr.SizeOfImage = nt->OptionalHeader.SizeOfImage;
wm->ldr.Flags = 0;
wm->ldr.LoadCount = 0;
wm->ldr.TlsIndex = -1;
wm->ldr.SectionHandle = NULL;
wm->ldr.CheckSum = 0;
wm->ldr.TimeDateStamp = 0;
RtlCreateUnicodeString( &wm->ldr.FullDllName, filename );
if ((p = strrchrW( wm->ldr.FullDllName.Buffer, '\\' ))) p++;
else p = wm->ldr.FullDllName.Buffer;
RtlInitUnicodeString( &wm->ldr.BaseDllName, p );
if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
{
wm->ldr.Flags |= LDR_IMAGE_IS_DLL;
if (nt->OptionalHeader.AddressOfEntryPoint)
wm->ldr.EntryPoint = (char *)hModule + nt->OptionalHeader.AddressOfEntryPoint;
}
InsertTailList(&NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList,
&wm->ldr.InLoadOrderModuleList);
/* insert module in MemoryList, sorted in increasing base addresses */
mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
if (CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList)->BaseAddress > wm->ldr.BaseAddress)
break;
}
entry->Blink->Flink = &wm->ldr.InMemoryOrderModuleList;
wm->ldr.InMemoryOrderModuleList.Blink = entry->Blink;
wm->ldr.InMemoryOrderModuleList.Flink = entry;
entry->Blink = &wm->ldr.InMemoryOrderModuleList;
/* wait until init is called for inserting into this list */
wm->ldr.InInitializationOrderModuleList.Flink = NULL;
wm->ldr.InInitializationOrderModuleList.Blink = NULL;
return wm;
}
/*************************************************************************
* alloc_process_tls
*
* Allocate the process-wide structure for module TLS storage.
*/
static NTSTATUS alloc_process_tls(void)
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
IMAGE_TLS_DIRECTORY *dir;
ULONG size, i;
mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_TLS, &size )))
continue;
size = (dir->EndAddressOfRawData - dir->StartAddressOfRawData) + dir->SizeOfZeroFill;
if (!size) continue;
tls_total_size += size;
tls_module_count++;
}
if (!tls_module_count) return STATUS_SUCCESS;
TRACE( "count %u size %u\n", tls_module_count, tls_total_size );
tls_dirs = RtlAllocateHeap( GetProcessHeap(), 0, tls_module_count * sizeof(*tls_dirs) );
if (!tls_dirs) return STATUS_NO_MEMORY;
for (i = 0, entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
if (!(dir = RtlImageDirectoryEntryToData( mod->BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_TLS, &size )))
continue;
tls_dirs[i] = dir;
*dir->AddressOfIndex = i;
mod->TlsIndex = i;
mod->LoadCount = -1; /* can't unload it */
i++;
}
return STATUS_SUCCESS;
}
/*************************************************************************
* alloc_thread_tls
*
* Allocate the per-thread structure for module TLS storage.
*/
static NTSTATUS alloc_thread_tls(void)
{
void **pointers;
char *data;
UINT i;
if (!tls_module_count) return STATUS_SUCCESS;
if (!(pointers = RtlAllocateHeap( GetProcessHeap(), 0,
tls_module_count * sizeof(*pointers) )))
return STATUS_NO_MEMORY;
if (!(data = RtlAllocateHeap( GetProcessHeap(), 0, tls_total_size )))
{
RtlFreeHeap( GetProcessHeap(), 0, pointers );
return STATUS_NO_MEMORY;
}
for (i = 0; i < tls_module_count; i++)
{
const IMAGE_TLS_DIRECTORY *dir = tls_dirs[i];
ULONG size = dir->EndAddressOfRawData - dir->StartAddressOfRawData;
TRACE( "thread %04lx idx %d: %ld/%ld bytes from %p to %p\n",
GetCurrentThreadId(), i, size, dir->SizeOfZeroFill,
(void *)dir->StartAddressOfRawData, data );
pointers[i] = data;
memcpy( data, (void *)dir->StartAddressOfRawData, size );
data += size;
memset( data, 0, dir->SizeOfZeroFill );
data += dir->SizeOfZeroFill;
}
NtCurrentTeb()->ThreadLocalStoragePointer = pointers;
return STATUS_SUCCESS;
}
/*************************************************************************
* call_tls_callbacks
*/
static void call_tls_callbacks( HMODULE module, UINT reason )
{
const IMAGE_TLS_DIRECTORY *dir;
const PIMAGE_TLS_CALLBACK *callback;
ULONG dirsize;
dir = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_TLS, &dirsize );
if (!dir || !dir->AddressOfCallBacks) return;
for (callback = dir->AddressOfCallBacks; *callback; callback++)
{
if (TRACE_ON(relay))
DPRINTF("%04lx:Call TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n",
GetCurrentThreadId(), *callback, module, reason_names[reason] );
(*callback)( module, reason, NULL );
if (TRACE_ON(relay))
DPRINTF("%04lx:Ret TLS callback (proc=%p,module=%p,reason=%s,reserved=0)\n",
GetCurrentThreadId(), *callback, module, reason_names[reason] );
}
}
/*************************************************************************
* MODULE_InitDLL
*/
static BOOL MODULE_InitDLL( WINE_MODREF *wm, UINT reason, LPVOID lpReserved )
{
WCHAR mod_name[32];
BOOL retv = TRUE;
DLLENTRYPROC entry = wm->ldr.EntryPoint;
void *module = wm->ldr.BaseAddress;
/* Skip calls for modules loaded with special load flags */
if (wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) return TRUE;
if (wm->ldr.TlsIndex != -1) call_tls_callbacks( wm->ldr.BaseAddress, reason );
if (!entry) return TRUE;
if (TRACE_ON(relay))
{
size_t len = min( wm->ldr.BaseDllName.Length, sizeof(mod_name)-sizeof(WCHAR) );
memcpy( mod_name, wm->ldr.BaseDllName.Buffer, len );
mod_name[len / sizeof(WCHAR)] = 0;
DPRINTF("%04lx:Call PE DLL (proc=%p,module=%p %s,reason=%s,res=%p)\n",
GetCurrentThreadId(), entry, module, debugstr_w(mod_name),
reason_names[reason], lpReserved );
}
else TRACE("(%p %s,%s,%p) - CALL\n", module, debugstr_w(wm->ldr.BaseDllName.Buffer),
reason_names[reason], lpReserved );
retv = call_dll_entry_point( entry, module, reason, lpReserved );
/* The state of the module list may have changed due to the call
to the dll. We cannot assume that this module has not been
deleted. */
if (TRACE_ON(relay))
DPRINTF("%04lx:Ret PE DLL (proc=%p,module=%p %s,reason=%s,res=%p) retval=%x\n",
GetCurrentThreadId(), entry, module, debugstr_w(mod_name),
reason_names[reason], lpReserved, retv );
else TRACE("(%p,%s,%p) - RETURN %d\n", module, reason_names[reason], lpReserved, retv );
return retv;
}
/*************************************************************************
* process_attach
*
* Send the process attach notification to all DLLs the given module
* depends on (recursively). This is somewhat complicated due to the fact that
*
* - we have to respect the module dependencies, i.e. modules implicitly
* referenced by another module have to be initialized before the module
* itself can be initialized
*
* - the initialization routine of a DLL can itself call LoadLibrary,
* thereby introducing a whole new set of dependencies (even involving
* the 'old' modules) at any time during the whole process
*
* (Note that this routine can be recursively entered not only directly
* from itself, but also via LoadLibrary from one of the called initialization
* routines.)
*
* Furthermore, we need to rearrange the main WINE_MODREF list to allow
* the process *detach* notifications to be sent in the correct order.
* This must not only take into account module dependencies, but also
* 'hidden' dependencies created by modules calling LoadLibrary in their
* attach notification routine.
*
* The strategy is rather simple: we move a WINE_MODREF to the head of the
* list after the attach notification has returned. This implies that the
* detach notifications are called in the reverse of the sequence the attach
* notifications *returned*.
*
* The loader_section must be locked while calling this function.
*/
static NTSTATUS process_attach( WINE_MODREF *wm, LPVOID lpReserved )
{
NTSTATUS status = STATUS_SUCCESS;
int i;
/* prevent infinite recursion in case of cyclical dependencies */
if ( ( wm->ldr.Flags & LDR_LOAD_IN_PROGRESS )
|| ( wm->ldr.Flags & LDR_PROCESS_ATTACHED ) )
return status;
TRACE("(%s,%p) - START\n", debugstr_w(wm->ldr.BaseDllName.Buffer), lpReserved );
/* Tag current MODREF to prevent recursive loop */
wm->ldr.Flags |= LDR_LOAD_IN_PROGRESS;
/* Recursively attach all DLLs this one depends on */
for ( i = 0; i < wm->nDeps; i++ )
{
if (!wm->deps[i]) continue;
if ((status = process_attach( wm->deps[i], lpReserved )) != STATUS_SUCCESS) break;
}
/* Call DLL entry point */
if (status == STATUS_SUCCESS)
{
WINE_MODREF *prev = current_modref;
current_modref = wm;
if (MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved ))
wm->ldr.Flags |= LDR_PROCESS_ATTACHED;
else
status = STATUS_DLL_INIT_FAILED;
current_modref = prev;
}
InsertTailList(&NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList,
&wm->ldr.InInitializationOrderModuleList);
/* Remove recursion flag */
wm->ldr.Flags &= ~LDR_LOAD_IN_PROGRESS;
TRACE("(%s,%p) - END\n", debugstr_w(wm->ldr.BaseDllName.Buffer), lpReserved );
return status;
}
/*************************************************************************
* process_detach
*
* Send DLL process detach notifications. See the comment about calling
* sequence at process_attach. Unless the bForceDetach flag
* is set, only DLLs with zero refcount are notified.
*/
static void process_detach( BOOL bForceDetach, LPVOID lpReserved )
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
RtlEnterCriticalSection( &loader_section );
if (bForceDetach) process_detaching = 1;
mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
do
{
for (entry = mark->Blink; entry != mark; entry = entry->Blink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE,
InInitializationOrderModuleList);
/* Check whether to detach this DLL */
if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( mod->LoadCount && !bForceDetach )
continue;
/* Call detach notification */
mod->Flags &= ~LDR_PROCESS_ATTACHED;
MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
DLL_PROCESS_DETACH, lpReserved );
/* Restart at head of WINE_MODREF list, as entries might have
been added and/or removed while performing the call ... */
break;
}
} while (entry != mark);
RtlLeaveCriticalSection( &loader_section );
}
/*************************************************************************
* MODULE_DllThreadAttach
*
* Send DLL thread attach notifications. These are sent in the
* reverse sequence of process detach notification.
*
*/
NTSTATUS MODULE_DllThreadAttach( LPVOID lpReserved )
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
NTSTATUS status;
/* don't do any attach calls if process is exiting */
if (process_detaching) return STATUS_SUCCESS;
/* FIXME: there is still a race here */
RtlEnterCriticalSection( &loader_section );
if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto done;
mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE,
InInitializationOrderModuleList);
if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( mod->Flags & LDR_NO_DLL_CALLS )
continue;
MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
DLL_THREAD_ATTACH, lpReserved );
}
done:
RtlLeaveCriticalSection( &loader_section );
return status;
}
/******************************************************************
* LdrDisableThreadCalloutsForDll (NTDLL.@)
*
*/
NTSTATUS WINAPI LdrDisableThreadCalloutsForDll(HMODULE hModule)
{
WINE_MODREF *wm;
NTSTATUS ret = STATUS_SUCCESS;
RtlEnterCriticalSection( &loader_section );
wm = get_modref( hModule );
if (!wm || wm->ldr.TlsIndex != -1)
ret = STATUS_DLL_NOT_FOUND;
else
wm->ldr.Flags |= LDR_NO_DLL_CALLS;
RtlLeaveCriticalSection( &loader_section );
return ret;
}
/******************************************************************
* LdrFindEntryForAddress (NTDLL.@)
*
* The loader_section must be locked while calling this function
*/
NTSTATUS WINAPI LdrFindEntryForAddress(const void* addr, PLDR_MODULE* pmod)
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
if ((const void *)mod->BaseAddress <= addr &&
(char *)addr < (char*)mod->BaseAddress + mod->SizeOfImage)
{
*pmod = mod;
return STATUS_SUCCESS;
}
if ((const void *)mod->BaseAddress > addr) break;
}
return STATUS_NO_MORE_ENTRIES;
}
/******************************************************************
* LdrLockLoaderLock (NTDLL.@)
*
* Note: flags are not implemented.
* Flag 0x01 is used to raise exceptions on errors.
* Flag 0x02 is used to avoid waiting on the section (does RtlTryEnterCriticalSection instead).
*/
NTSTATUS WINAPI LdrLockLoaderLock( ULONG flags, ULONG *result, ULONG *magic )
{
if (flags) FIXME( "flags %lx not supported\n", flags );
if (result) *result = 1;
if (!magic) return STATUS_INVALID_PARAMETER_3;
RtlEnterCriticalSection( &loader_section );
*magic = GetCurrentThreadId();
return STATUS_SUCCESS;
}
/******************************************************************
* LdrUnlockLoaderUnlock (NTDLL.@)
*/
NTSTATUS WINAPI LdrUnlockLoaderLock( ULONG flags, ULONG magic )
{
if (magic)
{
if (magic != GetCurrentThreadId()) return STATUS_INVALID_PARAMETER_2;
RtlLeaveCriticalSection( &loader_section );
}
return STATUS_SUCCESS;
}
/******************************************************************
* LdrGetDllHandle (NTDLL.@)
*/
NTSTATUS WINAPI LdrGetDllHandle(ULONG x, ULONG y, const UNICODE_STRING *name, HMODULE *base)
{
NTSTATUS status = STATUS_DLL_NOT_FOUND;
WCHAR dllname[MAX_PATH+4], *p;
UNICODE_STRING str;
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
if (x != 0 || y != 0)
FIXME("Unknown behavior, please report\n");
/* Append .DLL to name if no extension present */
if (!(p = strrchrW( name->Buffer, '.')) || strchrW( p, '/' ) || strchrW( p, '\\'))
{
if (name->Length >= MAX_PATH) return STATUS_NAME_TOO_LONG;
strcpyW( dllname, name->Buffer );
strcatW( dllname, dllW );
RtlInitUnicodeString( &str, dllname );
name = &str;
}
RtlEnterCriticalSection( &loader_section );
if (cached_modref)
{
if (RtlEqualUnicodeString( name, &cached_modref->ldr.FullDllName, TRUE ) ||
RtlEqualUnicodeString( name, &cached_modref->ldr.BaseDllName, TRUE ))
{
*base = cached_modref->ldr.BaseAddress;
status = STATUS_SUCCESS;
goto done;
}
}
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
if (RtlEqualUnicodeString( name, &mod->FullDllName, TRUE ) ||
RtlEqualUnicodeString( name, &mod->BaseDllName, TRUE ))
{
cached_modref = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
*base = mod->BaseAddress;
status = STATUS_SUCCESS;
break;
}
}
done:
RtlLeaveCriticalSection( &loader_section );
TRACE("%lx %lx %s -> %p\n", x, y, debugstr_us(name), status ? NULL : *base);
return status;
}
/******************************************************************
* LdrGetProcedureAddress (NTDLL.@)
*/
NTSTATUS WINAPI LdrGetProcedureAddress(HMODULE module, const ANSI_STRING *name,
ULONG ord, PVOID *address)
{
IMAGE_EXPORT_DIRECTORY *exports;
DWORD exp_size;
NTSTATUS ret = STATUS_PROCEDURE_NOT_FOUND;
RtlEnterCriticalSection( &loader_section );
if ((exports = RtlImageDirectoryEntryToData( module, TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
{
void *proc = name ? find_named_export( module, exports, exp_size, name->Buffer, -1 )
: find_ordinal_export( module, exports, exp_size, ord - exports->Base );
if (proc)
{
*address = proc;
ret = STATUS_SUCCESS;
}
}
else
{
/* check if the module itself is invalid to return the proper error */
if (!get_modref( module )) ret = STATUS_DLL_NOT_FOUND;
}
RtlLeaveCriticalSection( &loader_section );
return ret;
}
/***********************************************************************
* load_builtin_callback
*
* Load a library in memory; callback function for wine_dll_register
*/
static void load_builtin_callback( void *module, const char *filename )
{
static const WCHAR emptyW[1];
void *addr;
IMAGE_NT_HEADERS *nt;
WINE_MODREF *wm;
WCHAR *fullname, *p;
const WCHAR *load_path;
if (!module)
{
ERR("could not map image for %s\n", filename ? filename : "main exe" );
return;
}
if (!(nt = RtlImageNtHeader( module )))
{
ERR( "bad module for %s\n", filename ? filename : "main exe" );
builtin_load_info->status = STATUS_INVALID_IMAGE_FORMAT;
return;
}
if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
{
/* if we already have an executable, ignore this one */
if (!NtCurrentTeb()->Peb->ImageBaseAddress)
{
NtCurrentTeb()->Peb->ImageBaseAddress = module;
return; /* don't create the modref here, will be done later on */
}
}
/* create the MODREF */
if (!(fullname = RtlAllocateHeap( GetProcessHeap(), 0,
system_dir.MaximumLength + (strlen(filename) + 1) * sizeof(WCHAR) )))
{
ERR( "can't load %s\n", filename );
builtin_load_info->status = STATUS_NO_MEMORY;
return;
}
memcpy( fullname, system_dir.Buffer, system_dir.Length );
p = fullname + system_dir.Length / sizeof(WCHAR);
if (p > fullname && p[-1] != '\\') *p++ = '\\';
ascii_to_unicode( p, filename, strlen(filename) + 1 );
wm = alloc_module( module, fullname );
RtlFreeHeap( GetProcessHeap(), 0, fullname );
if (!wm)
{
ERR( "can't load %s\n", filename );
builtin_load_info->status = STATUS_NO_MEMORY;
return;
}
wm->ldr.Flags |= LDR_WINE_INTERNAL;
NtAllocateVirtualMemory( GetCurrentProcess(), &addr, module, &nt->OptionalHeader.SizeOfImage,
MEM_SYSTEM | MEM_IMAGE, PAGE_EXECUTE_WRITECOPY );
/* fixup imports */
load_path = builtin_load_info->load_path;
if (!load_path) load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
if (!load_path) load_path = emptyW;
if (fixup_imports( wm, load_path ) != STATUS_SUCCESS)
{
/* the module has only be inserted in the load & memory order lists */
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
/* FIXME: free the modref */
builtin_load_info->status = STATUS_DLL_NOT_FOUND;
return;
}
builtin_load_info->wm = wm;
TRACE( "loaded %s %p %p\n", filename, wm, module );
/* send the DLL load event */
SERVER_START_REQ( load_dll )
{
req->handle = 0;
req->base = module;
req->size = nt->OptionalHeader.SizeOfImage;
req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
req->dbg_size = nt->FileHeader.NumberOfSymbols;
req->name = &wm->ldr.FullDllName.Buffer;
wine_server_add_data( req, wm->ldr.FullDllName.Buffer, wm->ldr.FullDllName.Length );
wine_server_call( req );
}
SERVER_END_REQ;
/* setup relay debugging entry points */
if (TRACE_ON(relay)) RELAY_SetupDLL( module );
}
/******************************************************************************
* load_native_dll (internal)
*/
static NTSTATUS load_native_dll( LPCWSTR load_path, LPCWSTR name, HANDLE file,
DWORD flags, WINE_MODREF** pwm )
{
void *module;
HANDLE mapping;
OBJECT_ATTRIBUTES attr;
LARGE_INTEGER size;
IMAGE_NT_HEADERS *nt;
DWORD len = 0;
WINE_MODREF *wm;
NTSTATUS status;
TRACE( "loading %s\n", debugstr_w(name) );
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = NULL;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
size.QuadPart = 0;
status = NtCreateSection( &mapping, STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ,
&attr, &size, 0, SEC_IMAGE, file );
if (status != STATUS_SUCCESS) return status;
module = NULL;
status = NtMapViewOfSection( mapping, GetCurrentProcess(),
&module, 0, 0, &size, &len, ViewShare, 0, PAGE_READONLY );
NtClose( mapping );
if (status != STATUS_SUCCESS) return status;
/* create the MODREF */
if (!(wm = alloc_module( module, name ))) return STATUS_NO_MEMORY;
/* fixup imports */
if (!(flags & DONT_RESOLVE_DLL_REFERENCES))
{
if ((status = fixup_imports( wm, load_path )) != STATUS_SUCCESS)
{
/* the module has only be inserted in the load & memory order lists */
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
/* FIXME: there are several more dangling references
* left. Including dlls loaded by this dll before the
* failed one. Unrolling is rather difficult with the
* current structure and we can leave them lying
* around with no problems, so we don't care.
* As these might reference our wm, we don't free it.
*/
return status;
}
}
else wm->ldr.Flags |= LDR_DONT_RESOLVE_REFS;
/* send DLL load event */
nt = RtlImageNtHeader( module );
/* don't keep the file open if the mapping is from removable media */
if (!VIRTUAL_HasMapping( module )) file = 0;
SERVER_START_REQ( load_dll )
{
req->handle = file;
req->base = module;
req->size = nt->OptionalHeader.SizeOfImage;
req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
req->dbg_size = nt->FileHeader.NumberOfSymbols;
req->name = &wm->ldr.FullDllName.Buffer;
wine_server_add_data( req, wm->ldr.FullDllName.Buffer, wm->ldr.FullDllName.Length );
wine_server_call( req );
}
SERVER_END_REQ;
if (TRACE_ON(snoop)) SNOOP_SetupDLL( module );
*pwm = wm;
return STATUS_SUCCESS;
}
/***********************************************************************
* load_builtin_dll
*/
static NTSTATUS load_builtin_dll( LPCWSTR load_path, LPCWSTR path, DWORD flags, WINE_MODREF** pwm )
{
char error[256], dllname[MAX_PATH];
int file_exists;
const WCHAR *name, *p;
DWORD len, i;
void *handle;
struct builtin_load_info info, *prev_info;
/* Fix the name in case we have a full path and extension */
name = path;
if ((p = strrchrW( name, '\\' ))) name = p + 1;
if ((p = strrchrW( name, '/' ))) name = p + 1;
/* we don't want to depend on the current codepage here */
len = strlenW( name ) + 1;
if (len >= sizeof(dllname)) return STATUS_NAME_TOO_LONG;
for (i = 0; i < len; i++)
{
if (name[i] > 127) return STATUS_DLL_NOT_FOUND;
dllname[i] = (char)name[i];
if (dllname[i] >= 'A' && dllname[i] <= 'Z') dllname[i] += 'a' - 'A';
}
/* load_library will modify info.status. Note also that load_library can be
* called several times, if the .so file we're loading has dependencies.
* info.status will gather all the errors we may get while loading all these
* libraries
*/
info.load_path = load_path;
info.status = STATUS_SUCCESS;
info.wm = NULL;
prev_info = builtin_load_info;
builtin_load_info = &info;
handle = wine_dll_load( dllname, error, sizeof(error), &file_exists );
builtin_load_info = prev_info;
if (!handle)
{
if (!file_exists)
{
/* The file does not exist -> WARN() */
WARN("cannot open .so lib for builtin %s: %s\n", debugstr_w(name), error);
return STATUS_DLL_NOT_FOUND;
}
/* ERR() for all other errors (missing functions, ...) */
ERR("failed to load .so lib for builtin %s: %s\n", debugstr_w(name), error );
return STATUS_PROCEDURE_NOT_FOUND;
}
if (info.status != STATUS_SUCCESS) return info.status;
if (!info.wm)
{
/* The constructor wasn't called, this means the .so is already
* loaded under a different name. We can't support multiple names
* for the same module, so return an error. */
return STATUS_INVALID_IMAGE_FORMAT;
}
info.wm->ldr.SectionHandle = handle;
if (strcmpiW( info.wm->ldr.BaseDllName.Buffer, name ))
{
ERR( "loaded .so for %s but got %s instead - probably 16-bit dll\n",
debugstr_w(name), debugstr_w(info.wm->ldr.BaseDllName.Buffer) );
/* wine_dll_unload( handle );*/
return STATUS_INVALID_IMAGE_FORMAT;
}
*pwm = info.wm;
return STATUS_SUCCESS;
}
/***********************************************************************
* find_dll_file
*
* Find the file (or already loaded module) for a given dll name.
*/
static NTSTATUS find_dll_file( const WCHAR *load_path, const WCHAR *libname,
WCHAR *filename, ULONG *size, WINE_MODREF **pwm, HANDLE *handle )
{
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
UNICODE_STRING nt_name;
WCHAR *file_part, *ext;
ULONG len;
nt_name.Buffer = NULL;
if (RtlDetermineDosPathNameType_U( libname ) == RELATIVE_PATH)
{
/* we need to search for it */
/* but first append .dll because RtlDosSearchPath extension handling is broken */
if (!(ext = strrchrW( libname, '.')) || strchrW( ext, '/' ) || strchrW( ext, '\\'))
{
WCHAR *dllname;
if (!(dllname = RtlAllocateHeap( GetProcessHeap(), 0,
(strlenW(libname) * sizeof(WCHAR)) + sizeof(dllW) )))
return STATUS_NO_MEMORY;
strcpyW( dllname, libname );
strcatW( dllname, dllW );
len = RtlDosSearchPath_U( load_path, dllname, NULL, *size, filename, &file_part );
RtlFreeHeap( GetProcessHeap(), 0, dllname );
}
else len = RtlDosSearchPath_U( load_path, libname, NULL, *size, filename, &file_part );
if (len)
{
if (len >= *size)
{
*size = len + sizeof(WCHAR);
return STATUS_BUFFER_TOO_SMALL;
}
if ((*pwm = find_fullname_module( filename )) != NULL) return STATUS_SUCCESS;
/* check for already loaded module in a different path */
if (!contains_path( libname ))
{
if ((*pwm = find_basename_module( file_part )) != NULL) return STATUS_SUCCESS;
}
if (!RtlDosPathNameToNtPathName_U( filename, &nt_name, NULL, NULL ))
return STATUS_NO_MEMORY;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &nt_name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
if (NtOpenFile( handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ, 0 )) *handle = 0;
RtlFreeUnicodeString( &nt_name );
return STATUS_SUCCESS;
}
/* not found */
if (!contains_path( libname ))
{
/* if libname doesn't contain a path at all, we simply return the name as is,
* to be loaded as builtin */
len = strlenW(libname) * sizeof(WCHAR);
if (len >= *size) goto overflow;
strcpyW( filename, libname );
if (!strchrW( filename, '.' ))
{
len += sizeof(dllW) - sizeof(WCHAR);
if (len >= *size) goto overflow;
strcatW( filename, dllW );
}
*pwm = find_basename_module( filename );
return STATUS_SUCCESS;
}
}
/* absolute path name, or relative path name but not found above */
if (!RtlDosPathNameToNtPathName_U( libname, &nt_name, &file_part, NULL ))
return STATUS_NO_MEMORY;
len = nt_name.Length - 4*sizeof(WCHAR); /* for \??\ prefix */
if (len >= *size) goto overflow;
memcpy( filename, nt_name.Buffer + 4, len + sizeof(WCHAR) );
if (file_part && !strchrW( file_part, '.' ))
{
len += sizeof(dllW) - sizeof(WCHAR);
if (len >= *size) goto overflow;
strcatW( filename, dllW );
}
if (!(*pwm = find_fullname_module( filename )))
{
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &nt_name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
if (NtOpenFile( handle, GENERIC_READ, &attr, &io, FILE_SHARE_READ, 0 )) *handle = 0;
}
RtlFreeUnicodeString( &nt_name );
return STATUS_SUCCESS;
overflow:
RtlFreeUnicodeString( &nt_name );
*size = len + sizeof(WCHAR);
return STATUS_BUFFER_TOO_SMALL;
}
/***********************************************************************
* load_dll (internal)
*
* Load a PE style module according to the load order.
* The loader_section must be locked while calling this function.
*/
static NTSTATUS load_dll( LPCWSTR load_path, LPCWSTR libname, DWORD flags, WINE_MODREF** pwm )
{
int i;
enum loadorder_type loadorder[LOADORDER_NTYPES];
WCHAR buffer[32];
WCHAR *filename;
ULONG size;
const char *filetype = "";
WINE_MODREF *main_exe;
HANDLE handle = 0;
NTSTATUS nts;
TRACE( "looking for %s in %s\n", debugstr_w(libname), debugstr_w(load_path) );
filename = buffer;
size = sizeof(buffer);
for (;;)
{
nts = find_dll_file( load_path, libname, filename, &size, pwm, &handle );
if (nts == STATUS_SUCCESS) break;
if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
if (nts != STATUS_BUFFER_TOO_SMALL) return nts;
/* grow the buffer and retry */
if (!(filename = RtlAllocateHeap( GetProcessHeap(), 0, size ))) return STATUS_NO_MEMORY;
}
if (*pwm) /* found already loaded module */
{
if ((*pwm)->ldr.LoadCount != -1) (*pwm)->ldr.LoadCount++;
if (((*pwm)->ldr.Flags & LDR_DONT_RESOLVE_REFS) &&
!(flags & DONT_RESOLVE_DLL_REFERENCES))
{
(*pwm)->ldr.Flags &= ~LDR_DONT_RESOLVE_REFS;
fixup_imports( *pwm, load_path );
}
TRACE("Found loaded module %s for %s at %p, count=%d\n",
debugstr_w((*pwm)->ldr.FullDllName.Buffer), debugstr_w(libname),
(*pwm)->ldr.BaseAddress, (*pwm)->ldr.LoadCount);
if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
return STATUS_SUCCESS;
}
main_exe = get_modref( NtCurrentTeb()->Peb->ImageBaseAddress );
MODULE_GetLoadOrderW( loadorder, main_exe ? main_exe->ldr.BaseDllName.Buffer : NULL, filename );
nts = STATUS_DLL_NOT_FOUND;
for (i = 0; i < LOADORDER_NTYPES; i++)
{
if (loadorder[i] == LOADORDER_INVALID) break;
switch (loadorder[i])
{
case LOADORDER_DLL:
TRACE("Trying native dll %s\n", debugstr_w(filename));
if (!handle) continue; /* it cannot possibly be loaded */
nts = load_native_dll( load_path, filename, handle, flags, pwm );
filetype = "native";
break;
case LOADORDER_BI:
TRACE("Trying built-in %s\n", debugstr_w(filename));
nts = load_builtin_dll( load_path, filename, flags, pwm );
filetype = "builtin";
break;
default:
nts = STATUS_INTERNAL_ERROR;
break;
}
if (nts == STATUS_SUCCESS)
{
/* Initialize DLL just loaded */
TRACE("Loaded module %s (%s) at %p\n",
debugstr_w(filename), filetype, (*pwm)->ldr.BaseAddress);
if (!TRACE_ON(module))
TRACE_(loaddll)("Loaded module %s : %s\n", debugstr_w(filename), filetype);
/* Set the ldr.LoadCount here so that an attach failure will */
/* decrement the dependencies through the MODULE_FreeLibrary call. */
(*pwm)->ldr.LoadCount = 1;
if (handle) NtClose( handle );
if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
return nts;
}
if (nts != STATUS_DLL_NOT_FOUND) break;
}
WARN("Failed to load module %s; status=%lx\n", debugstr_w(libname), nts);
if (handle) NtClose( handle );
if (filename != buffer) RtlFreeHeap( GetProcessHeap(), 0, filename );
return nts;
}
/******************************************************************
* LdrLoadDll (NTDLL.@)
*/
NTSTATUS WINAPI LdrLoadDll(LPCWSTR path_name, DWORD flags,
const UNICODE_STRING *libname, HMODULE* hModule)
{
WINE_MODREF *wm;
NTSTATUS nts;
RtlEnterCriticalSection( &loader_section );
if (!path_name) path_name = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
nts = load_dll( path_name, libname->Buffer, flags, &wm );
if (nts == STATUS_SUCCESS && !(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS))
{
nts = process_attach( wm, NULL );
if (nts != STATUS_SUCCESS)
{
WARN("Attach failed for module %s\n", debugstr_w(libname->Buffer));
LdrUnloadDll(wm->ldr.BaseAddress);
wm = NULL;
}
}
*hModule = (wm) ? wm->ldr.BaseAddress : NULL;
RtlLeaveCriticalSection( &loader_section );
return nts;
}
/******************************************************************
* LdrQueryProcessModuleInformation
*
*/
NTSTATUS WINAPI LdrQueryProcessModuleInformation(PSYSTEM_MODULE_INFORMATION smi,
ULONG buf_size, ULONG* req_size)
{
SYSTEM_MODULE* sm = &smi->Modules[0];
ULONG size = sizeof(ULONG);
NTSTATUS nts = STATUS_SUCCESS;
ANSI_STRING str;
char* ptr;
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
smi->ModulesCount = 0;
RtlEnterCriticalSection( &loader_section );
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
size += sizeof(*sm);
if (size <= buf_size)
{
sm->Reserved1 = 0; /* FIXME */
sm->Reserved2 = 0; /* FIXME */
sm->ImageBaseAddress = mod->BaseAddress;
sm->ImageSize = mod->SizeOfImage;
sm->Flags = mod->Flags;
sm->Id = 0; /* FIXME */
sm->Rank = 0; /* FIXME */
sm->Unknown = 0; /* FIXME */
str.Length = 0;
str.MaximumLength = MAXIMUM_FILENAME_LENGTH;
str.Buffer = sm->Name;
RtlUnicodeStringToAnsiString(&str, &mod->FullDllName, FALSE);
ptr = strrchr(sm->Name, '\\');
sm->NameOffset = (ptr != NULL) ? (ptr - (char*)sm->Name + 1) : 0;
smi->ModulesCount++;
sm++;
}
else nts = STATUS_INFO_LENGTH_MISMATCH;
}
RtlLeaveCriticalSection( &loader_section );
if (req_size) *req_size = size;
return nts;
}
/******************************************************************
* LdrShutdownProcess (NTDLL.@)
*
*/
void WINAPI LdrShutdownProcess(void)
{
TRACE("()\n");
process_detach( TRUE, (LPVOID)1 );
}
/******************************************************************
* LdrShutdownThread (NTDLL.@)
*
*/
void WINAPI LdrShutdownThread(void)
{
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
TRACE("()\n");
/* don't do any detach calls if process is exiting */
if (process_detaching) return;
/* FIXME: there is still a race here */
RtlEnterCriticalSection( &loader_section );
mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
for (entry = mark->Blink; entry != mark; entry = entry->Blink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE,
InInitializationOrderModuleList);
if ( !(mod->Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( mod->Flags & LDR_NO_DLL_CALLS )
continue;
MODULE_InitDLL( CONTAINING_RECORD(mod, WINE_MODREF, ldr),
DLL_THREAD_DETACH, NULL );
}
RtlLeaveCriticalSection( &loader_section );
}
/***********************************************************************
* MODULE_FlushModrefs
*
* Remove all unused modrefs and call the internal unloading routines
* for the library type.
*
* The loader_section must be locked while calling this function.
*/
static void MODULE_FlushModrefs(void)
{
PLIST_ENTRY mark, entry, prev;
PLDR_MODULE mod;
WINE_MODREF*wm;
mark = &NtCurrentTeb()->Peb->LdrData->InInitializationOrderModuleList;
for (entry = mark->Blink; entry != mark; entry = prev)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE,
InInitializationOrderModuleList);
wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
prev = entry->Blink;
if (mod->LoadCount) continue;
RemoveEntryList(&mod->InLoadOrderModuleList);
RemoveEntryList(&mod->InMemoryOrderModuleList);
RemoveEntryList(&mod->InInitializationOrderModuleList);
TRACE(" unloading %s\n", debugstr_w(mod->FullDllName.Buffer));
if (!TRACE_ON(module))
TRACE_(loaddll)("Unloaded module %s : %s\n",
debugstr_w(mod->FullDllName.Buffer),
(wm->ldr.Flags & LDR_WINE_INTERNAL) ? "builtin" : "native" );
SERVER_START_REQ( unload_dll )
{
req->base = mod->BaseAddress;
wine_server_call( req );
}
SERVER_END_REQ;
if (wm->ldr.Flags & LDR_WINE_INTERNAL) wine_dll_unload( wm->ldr.SectionHandle );
NtUnmapViewOfSection( GetCurrentProcess(), mod->BaseAddress );
if (cached_modref == wm) cached_modref = NULL;
RtlFreeUnicodeString( &mod->FullDllName );
RtlFreeHeap( GetProcessHeap(), 0, wm->deps );
RtlFreeHeap( GetProcessHeap(), 0, wm );
}
}
/***********************************************************************
* MODULE_DecRefCount
*
* The loader_section must be locked while calling this function.
*/
static void MODULE_DecRefCount( WINE_MODREF *wm )
{
int i;
if ( wm->ldr.Flags & LDR_UNLOAD_IN_PROGRESS )
return;
if ( wm->ldr.LoadCount <= 0 )
return;
--wm->ldr.LoadCount;
TRACE("(%s) ldr.LoadCount: %d\n", debugstr_w(wm->ldr.BaseDllName.Buffer), wm->ldr.LoadCount );
if ( wm->ldr.LoadCount == 0 )
{
wm->ldr.Flags |= LDR_UNLOAD_IN_PROGRESS;
for ( i = 0; i < wm->nDeps; i++ )
if ( wm->deps[i] )
MODULE_DecRefCount( wm->deps[i] );
wm->ldr.Flags &= ~LDR_UNLOAD_IN_PROGRESS;
}
}
/******************************************************************
* LdrUnloadDll (NTDLL.@)
*
*
*/
NTSTATUS WINAPI LdrUnloadDll( HMODULE hModule )
{
NTSTATUS retv = STATUS_SUCCESS;
TRACE("(%p)\n", hModule);
RtlEnterCriticalSection( &loader_section );
/* if we're stopping the whole process (and forcing the removal of all
* DLLs) the library will be freed anyway
*/
if (!process_detaching)
{
WINE_MODREF *wm;
free_lib_count++;
if ((wm = get_modref( hModule )) != NULL)
{
TRACE("(%s) - START\n", debugstr_w(wm->ldr.BaseDllName.Buffer));
/* Recursively decrement reference counts */
MODULE_DecRefCount( wm );
/* Call process detach notifications */
if ( free_lib_count <= 1 )
{
process_detach( FALSE, NULL );
MODULE_FlushModrefs();
}
TRACE("END\n");
}
else
retv = STATUS_DLL_NOT_FOUND;
free_lib_count--;
}
RtlLeaveCriticalSection( &loader_section );
return retv;
}
/***********************************************************************
* RtlImageNtHeader (NTDLL.@)
*/
PIMAGE_NT_HEADERS WINAPI RtlImageNtHeader(HMODULE hModule)
{
IMAGE_NT_HEADERS *ret;
__TRY
{
IMAGE_DOS_HEADER *dos = (IMAGE_DOS_HEADER *)hModule;
ret = NULL;
if (dos->e_magic == IMAGE_DOS_SIGNATURE)
{
ret = (IMAGE_NT_HEADERS *)((char *)dos + dos->e_lfanew);
if (ret->Signature != IMAGE_NT_SIGNATURE) ret = NULL;
}
}
__EXCEPT(page_fault)
{
return NULL;
}
__ENDTRY
return ret;
}
/******************************************************************
* init_system_dir
*
* System dir initialization once kernel32 has been loaded.
*/
static inline void init_system_dir(void)
{
PLIST_ENTRY mark, entry;
LPWSTR buffer, p;
if (!MODULE_GetSystemDirectory( &system_dir ))
{
ERR( "Couldn't get system dir\n");
exit(1);
}
/* prepend the system dir to the name of the already created modules */
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
LDR_MODULE *mod = CONTAINING_RECORD( entry, LDR_MODULE, InLoadOrderModuleList );
assert( mod->Flags & LDR_WINE_INTERNAL );
buffer = RtlAllocateHeap( GetProcessHeap(), 0,
system_dir.Length + mod->FullDllName.Length + 2*sizeof(WCHAR) );
if (!buffer) continue;
strcpyW( buffer, system_dir.Buffer );
p = buffer + strlenW( buffer );
if (p > buffer && p[-1] != '\\') *p++ = '\\';
strcpyW( p, mod->FullDllName.Buffer );
RtlInitUnicodeString( &mod->FullDllName, buffer );
RtlInitUnicodeString( &mod->BaseDllName, p );
}
}
/******************************************************************
* LdrInitializeThunk (NTDLL.@)
*
* FIXME: the arguments are not correct, main_file is a Wine invention.
*/
void WINAPI LdrInitializeThunk( HANDLE main_file, ULONG unknown2, ULONG unknown3, ULONG unknown4 )
{
NTSTATUS status;
WINE_MODREF *wm;
LPCWSTR load_path;
PEB *peb = NtCurrentTeb()->Peb;
UNICODE_STRING *main_exe_name = &peb->ProcessParameters->ImagePathName;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
init_system_dir();
/* allocate the modref for the main exe */
if (!(wm = alloc_module( peb->ImageBaseAddress, main_exe_name->Buffer )))
{
status = STATUS_NO_MEMORY;
goto error;
}
wm->ldr.LoadCount = -1; /* can't unload main exe */
/* the main exe needs to be the first in the load order list */
RemoveEntryList( &wm->ldr.InLoadOrderModuleList );
InsertHeadList( &peb->LdrData->InLoadOrderModuleList, &wm->ldr.InLoadOrderModuleList );
/* Install signal handlers; this cannot be done before, since we cannot
* send exceptions to the debugger before the create process event that
* is sent by REQ_INIT_PROCESS_DONE.
* We do need the handlers in place by the time the request is over, so
* we set them up here. If we segfault between here and the server call
* something is very wrong... */
if (!SIGNAL_Init()) exit(1);
/* Signal the parent process to continue */
SERVER_START_REQ( init_process_done )
{
req->module = peb->ImageBaseAddress;
req->module_size = wm->ldr.SizeOfImage;
req->entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
/* API requires a double indirection */
req->name = &main_exe_name->Buffer;
req->exe_file = main_file;
req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
wine_server_add_data( req, main_exe_name->Buffer, main_exe_name->Length );
wine_server_call( req );
}
SERVER_END_REQ;
if (main_file) NtClose( main_file ); /* we no longer need it */
if (TRACE_ON(relay) || TRACE_ON(snoop))
{
RELAY_InitDebugLists();
if (TRACE_ON(relay)) /* setup relay for already loaded dlls */
{
LIST_ENTRY *entry, *mark = &peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
LDR_MODULE *mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
if (mod->Flags & LDR_WINE_INTERNAL) RELAY_SetupDLL( mod->BaseAddress );
}
}
}
RtlEnterCriticalSection( &loader_section );
load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
if ((status = fixup_imports( wm, load_path )) != STATUS_SUCCESS) goto error;
if ((status = alloc_process_tls()) != STATUS_SUCCESS) goto error;
if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto error;
if ((status = process_attach( wm, (LPVOID)1 )) != STATUS_SUCCESS) goto error;
RtlLeaveCriticalSection( &loader_section );
return;
error:
ERR( "Main exe initialization for %s failed, status %lx\n", debugstr_w(main_exe_name->Buffer), status );
exit(1);
}
/***********************************************************************
* RtlImageDirectoryEntryToData (NTDLL.@)
*/
PVOID WINAPI RtlImageDirectoryEntryToData( HMODULE module, BOOL image, WORD dir, ULONG *size )
{
const IMAGE_NT_HEADERS *nt;
DWORD addr;
if ((ULONG_PTR)module & 1) /* mapped as data file */
{
module = (HMODULE)((ULONG_PTR)module & ~1);
image = FALSE;
}
if (!(nt = RtlImageNtHeader( module ))) return NULL;
if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
*size = nt->OptionalHeader.DataDirectory[dir].Size;
if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)module + addr;
/* not mapped as image, need to find the section containing the virtual address */
return RtlImageRvaToVa( nt, module, addr, NULL );
}
/***********************************************************************
* RtlImageRvaToSection (NTDLL.@)
*/
PIMAGE_SECTION_HEADER WINAPI RtlImageRvaToSection( const IMAGE_NT_HEADERS *nt,
HMODULE module, DWORD rva )
{
int i;
IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader +
nt->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
{
if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva))
return sec;
}
return NULL;
}
/***********************************************************************
* RtlImageRvaToVa (NTDLL.@)
*/
PVOID WINAPI RtlImageRvaToVa( const IMAGE_NT_HEADERS *nt, HMODULE module,
DWORD rva, IMAGE_SECTION_HEADER **section )
{
IMAGE_SECTION_HEADER *sec;
if (section && *section) /* try this section first */
{
sec = *section;
if ((sec->VirtualAddress <= rva) && (sec->VirtualAddress + sec->SizeOfRawData > rva))
goto found;
}
if (!(sec = RtlImageRvaToSection( nt, module, rva ))) return NULL;
found:
if (section) *section = sec;
return (char *)module + sec->PointerToRawData + (rva - sec->VirtualAddress);
}
/***********************************************************************
* __wine_process_init
*/
void __wine_process_init( int argc, char *argv[] )
{
static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
WINE_MODREF *wm;
NTSTATUS status;
ANSI_STRING func_name;
void (* DECLSPEC_NORETURN init_func)();
extern mode_t FILE_umask;
thread_init();
/* retrieve current umask */
FILE_umask = umask(0777);
umask( FILE_umask );
/* setup the load callback and create ntdll modref */
wine_dll_set_callback( load_builtin_callback );
if ((status = load_builtin_dll( NULL, kernel32W, 0, &wm )) != STATUS_SUCCESS)
{
MESSAGE( "wine: could not load kernel32.dll, status %lx\n", status );
exit(1);
}
RtlInitAnsiString( &func_name, "__wine_kernel_init" );
if ((status = LdrGetProcedureAddress( wm->ldr.BaseAddress, &func_name,
0, (void **)&init_func )) != STATUS_SUCCESS)
{
MESSAGE( "wine: could not find __wine_kernel_init in kernel32.dll, status %lx\n", status );
exit(1);
}
init_func();
}
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