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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 <assert.h>
#include "winbase.h"
#include "winnt.h"
#include "winternl.h"
#include "module.h"
#include "file.h"
#include "wine/exception.h"
#include "excpt.h"
#include "snoop.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 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 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( LPCSTR 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);
}
/*************************************************************************
* 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_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;
char mod_name[256];
char *end = strchr(forward, '.');
FARPROC proc = NULL;
if (!end) return NULL;
if (end - forward >= sizeof(mod_name)) return NULL;
memcpy( mod_name, forward, end - forward );
mod_name[end-forward] = 0;
if (!(wm = MODULE_FindModule( mod_name )))
{
ERR("module not found for forward '%s' used by '%s'\n",
forward, get_modref(module)->filename );
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, get_modref(module)->filename, get_modref(module)->modname );
}
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))
{
proc = SNOOP_GetProcAddress( module, exports, exp_size, proc, ordinal );
}
if (TRACE_ON(relay) && current_modref)
{
proc = RELAY_GetProcAddress( module, exports, exp_size, proc, current_modref->modname );
}
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 )
{
NTSTATUS status;
WINE_MODREF *wmImp;
HMODULE imp_mod;
IMAGE_EXPORT_DIRECTORY *exports;
DWORD exp_size;
IMAGE_THUNK_DATA *import_list, *thunk_list;
char *name = get_rva( module, descr->Name );
status = load_dll( name, 0, &wmImp );
if (status)
{
if (status == STATUS_NO_SUCH_FILE)
ERR("Module (file) %s (which is needed by %s) not found\n",
name, current_modref->filename);
else
ERR("Loading module (file) %s (which is needed by %s) failed (error %lx).\n",
name, current_modref->filename, status);
return NULL;
}
imp_mod = wmImp->ldr.BaseAddress;
if (!(exports = RtlImageDirectoryEntryToData( imp_mod, TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
return NULL;
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;
while (import_list->u1.Ordinal)
{
if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal))
{
int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
TRACE("--- Ordinal %s,%d\n", name, 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, current_modref->filename );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
}
else /* import by name */
{
IMAGE_IMPORT_BY_NAME *pe_name;
pe_name = get_rva( module, (DWORD)import_list->u1.AddressOfData );
TRACE("--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
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, current_modref->filename );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
}
import_list++;
thunk_list++;
}
return wmImp;
}
/****************************************************************
* PE_fixup_imports
*
* Fixup all imports of a given module.
* The loader_section must be locked while calling this function.
*/
DWORD PE_fixup_imports( WINE_MODREF *wm )
{
int i, nb_imports;
IMAGE_IMPORT_DESCRIPTOR *imports;
WINE_MODREF *prev;
DWORD size;
if (!(imports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_IMPORT, &size )))
return 0;
nb_imports = size / sizeof(*imports);
for (i = 0; i < nb_imports; i++)
{
if (!imports[i].Name)
{
nb_imports = i;
break;
}
}
if (!nb_imports) return 0; /* no imports */
/* Allocate module dependency list */
wm->nDeps = nb_imports;
wm->deps = RtlAllocateHeap( ntdll_get_process_heap(), 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;
for (i = 0; i < nb_imports; i++)
{
if (!(wm->deps[i] = import_dll( wm->ldr.BaseAddress, &imports[i] ))) break;
}
current_modref = prev;
return (i < nb_imports);
}
/*************************************************************************
* MODULE_AllocModRef
*
* Allocate a WINE_MODREF structure and add it to the process list
* The loader_section must be locked while calling this function.
*/
WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename )
{
WINE_MODREF *wm;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader(hModule);
PLIST_ENTRY entry, mark;
BOOLEAN linked = FALSE;
DWORD long_len = strlen( filename );
DWORD short_len = GetShortPathNameA( filename, NULL, 0 );
if ((wm = RtlAllocateHeap( ntdll_get_process_heap(), HEAP_ZERO_MEMORY,
sizeof(*wm) + long_len + short_len + 1 )))
{
wm->filename = wm->data;
memcpy( wm->filename, filename, long_len + 1 );
if ((wm->modname = strrchr( wm->filename, '\\' ))) wm->modname++;
else wm->modname = wm->filename;
wm->short_filename = wm->filename + long_len + 1;
GetShortPathNameA( wm->filename, wm->short_filename, short_len + 1 );
if ((wm->short_modname = strrchr( wm->short_filename, '\\' ))) wm->short_modname++;
else wm->short_modname = wm->short_filename;
wm->ldr.BaseAddress = hModule;
wm->ldr.EntryPoint = (nt->OptionalHeader.AddressOfEntryPoint) ?
((char *)hModule + nt->OptionalHeader.AddressOfEntryPoint) : 0;
wm->ldr.SizeOfImage = nt->OptionalHeader.SizeOfImage;
RtlCreateUnicodeStringFromAsciiz( &wm->ldr.FullDllName, wm->filename);
RtlCreateUnicodeStringFromAsciiz( &wm->ldr.BaseDllName, wm->modname);
wm->ldr.Flags = 0;
wm->ldr.LoadCount = 0;
wm->ldr.TlsIndex = -1;
wm->ldr.SectionHandle = NULL;
wm->ldr.CheckSum = 0;
wm->ldr.TimeDateStamp = 0;
/* this is a bit ugly, but we need to have app module first in LoadOrder
* list, But in wine, ntdll is loaded first, so by inserting DLLs at the tail
* and app module at the head we insure that order
*/
if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
{
/* is first loaded module a DLL or an exec ? */
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
if (mark->Flink == mark ||
(CONTAINING_RECORD(mark->Flink, LDR_MODULE, InLoadOrderModuleList)->Flags & LDR_IMAGE_IS_DLL))
{
InsertHeadList(&NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList,
&wm->ldr.InLoadOrderModuleList);
linked = TRUE;
}
}
else wm->ldr.Flags |= LDR_IMAGE_IS_DLL;
if (!linked)
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( ntdll_get_process_heap(), 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( ntdll_get_process_heap(), 0,
tls_module_count * sizeof(*pointers) )))
return STATUS_NO_MEMORY;
if (!(data = RtlAllocateHeap( ntdll_get_process_heap(), 0, tls_total_size )))
{
RtlFreeHeap( ntdll_get_process_heap(), 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 )
{
char 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 || !(wm->ldr.Flags & LDR_IMAGE_IS_DLL)) return TRUE;
if (TRACE_ON(relay))
{
size_t len = max( strlen(wm->modname), sizeof(mod_name)-1 );
memcpy( mod_name, wm->modname, len );
mod_name[len] = 0;
DPRINTF("%04lx:Call PE DLL (proc=%p,module=%p (%s),reason=%s,res=%p)\n",
GetCurrentThreadId(), entry, module, mod_name, reason_names[reason], lpReserved );
}
else TRACE("(%p (%s),%s,%p) - CALL\n", module, wm->modname, reason_names[reason], lpReserved );
retv = 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, mod_name, reason_names[reason], lpReserved, retv );
else TRACE("(%p,%s,%p) - RETURN %d\n", module, reason_names[reason], lpReserved, retv );
return retv;
}
/*************************************************************************
* MODULE_DllProcessAttach
*
* 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*.
*/
NTSTATUS MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
{
NTSTATUS status = STATUS_SUCCESS;
int i;
RtlEnterCriticalSection( &loader_section );
if (!wm)
{
PLIST_ENTRY mark;
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
wm = CONTAINING_RECORD(CONTAINING_RECORD(mark->Flink,
LDR_MODULE, InLoadOrderModuleList),
WINE_MODREF, ldr);
wm->ldr.LoadCount = -1; /* can't unload main exe */
if ((status = alloc_process_tls()) != STATUS_SUCCESS) goto done;
if ((status = alloc_thread_tls()) != STATUS_SUCCESS) goto done;
}
assert( wm );
/* prevent infinite recursion in case of cyclical dependencies */
if ( ( wm->ldr.Flags & LDR_LOAD_IN_PROGRESS )
|| ( wm->ldr.Flags & LDR_PROCESS_ATTACHED ) )
goto done;
TRACE("(%s,%p) - START\n", wm->modname, 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 = MODULE_DllProcessAttach( 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", wm->modname, lpReserved );
done:
RtlLeaveCriticalSection( &loader_section );
return status;
}
/*************************************************************************
* MODULE_DllProcessDetach
*
* Send DLL process detach notifications. See the comment about calling
* sequence at MODULE_DllProcessAttach. Unless the bForceDetach flag
* is set, only DLLs with zero refcount are notified.
*/
static void MODULE_DllProcessDetach( 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;
}
/**********************************************************************
* MODULE_FindModule
*
* Find a (loaded) win32 module depending on path
* LPCSTR path: [in] pathname of module/library to be found
*
* The loader_section must be locked while calling this function
* RETURNS
* the module handle if found
* 0 if not
*/
WINE_MODREF *MODULE_FindModule(LPCSTR path)
{
WINE_MODREF *wm;
PLIST_ENTRY mark, entry;
PLDR_MODULE mod;
char dllname[260], *p;
/* Append .DLL to name if no extension present */
strcpy( dllname, path );
if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
strcat( dllname, ".DLL" );
if ((wm = cached_modref) != NULL)
{
if ( !FILE_strcasecmp( dllname, wm->modname ) ) return wm;
if ( !FILE_strcasecmp( dllname, wm->filename ) ) return wm;
if ( !FILE_strcasecmp( dllname, wm->short_modname ) ) return wm;
if ( !FILE_strcasecmp( dllname, wm->short_filename ) ) return wm;
}
mark = &NtCurrentTeb()->Peb->LdrData->InLoadOrderModuleList;
for (entry = mark->Flink; entry != mark; entry = entry->Flink)
{
mod = CONTAINING_RECORD(entry, LDR_MODULE, InLoadOrderModuleList);
wm = CONTAINING_RECORD(mod, WINE_MODREF, ldr);
if ( !FILE_strcasecmp( dllname, wm->modname ) ) break;
if ( !FILE_strcasecmp( dllname, wm->filename ) ) break;
if ( !FILE_strcasecmp( dllname, wm->short_modname ) ) break;
if ( !FILE_strcasecmp( dllname, wm->short_filename ) ) break;
}
if (entry == mark) wm = NULL;
cached_modref = wm;
return wm;
}
/******************************************************************
* 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, PUNICODE_STRING name, HMODULE *base)
{
WINE_MODREF *wm;
STRING str;
if (x != 0 || y != 0)
FIXME("Unknown behavior, please report\n");
/* FIXME: we should store module name information as unicode */
RtlUnicodeStringToAnsiString( &str, name, TRUE );
wm = MODULE_FindModule( str.Buffer );
RtlFreeAnsiString( &str );
if (!wm)
{
*base = 0;
return STATUS_DLL_NOT_FOUND;
}
*base = wm->ldr.BaseAddress;
TRACE("%lx %lx %s -> %p\n", x, y, debugstr_us(name), *base);
return STATUS_SUCCESS;
}
/******************************************************************
* LdrGetProcedureAddress (NTDLL.@)
*/
NTSTATUS WINAPI LdrGetProcedureAddress(HMODULE module, PANSI_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;
}
/***********************************************************************
* allocate_lib_dir
*
* helper for MODULE_LoadLibraryExA. Allocate space to hold the directory
* portion of the provided name and put the name in it.
*
*/
static LPCSTR allocate_lib_dir(LPCSTR libname)
{
LPCSTR p, pmax;
LPSTR result;
int length;
pmax = libname;
if ((p = strrchr( pmax, '\\' ))) pmax = p + 1;
if ((p = strrchr( pmax, '/' ))) pmax = p + 1; /* Naughty. MSDN says don't */
if (pmax == libname && pmax[0] && pmax[1] == ':') pmax += 2;
length = pmax - libname;
result = RtlAllocateHeap (ntdll_get_process_heap(), 0, length+1);
if (result)
{
strncpy (result, libname, length);
result [length] = '\0';
}
return result;
}
/***********************************************************************
* load_dll (internal)
*
* Load a PE style module according to the load order.
*
* libdir is used to support LOAD_WITH_ALTERED_SEARCH_PATH during the recursion
* on this function. When first called from LoadLibraryExA it will be
* NULL but thereafter it may point to a buffer containing the path
* portion of the library name. Note that the recursion all occurs
* within a Critical section (see LoadLibraryExA) so the use of a
* static is acceptable.
* (We have to use a static variable at some point anyway, to pass the
* information from BUILTIN32_dlopen through dlopen and the builtin's
* init function into load_library).
* allocated_libdir is TRUE in the stack frame that allocated libdir
*/
static NTSTATUS load_dll( LPCSTR libname, DWORD flags, WINE_MODREF** pwm )
{
int i;
enum loadorder_type loadorder[LOADORDER_NTYPES];
LPSTR filename;
const char *filetype = "";
DWORD found;
BOOL allocated_libdir = FALSE;
static LPCSTR libdir = NULL; /* See above */
NTSTATUS nts = STATUS_NO_SUCH_FILE;
*pwm = NULL;
if ( !libname ) return STATUS_DLL_NOT_FOUND; /* FIXME ? */
filename = RtlAllocateHeap ( ntdll_get_process_heap(), 0, MAX_PATH + 1 );
if ( !filename ) return STATUS_NO_MEMORY;
*filename = 0; /* Just in case we don't set it before goto error */
RtlEnterCriticalSection( &loader_section );
if ((flags & LOAD_WITH_ALTERED_SEARCH_PATH) && FILE_contains_path(libname))
{
if (!(libdir = allocate_lib_dir(libname)))
{
nts = STATUS_NO_MEMORY;
goto error;
}
allocated_libdir = TRUE;
}
if (!libdir || allocated_libdir)
found = SearchPathA(NULL, libname, ".dll", MAX_PATH, filename, NULL);
else
found = DIR_SearchAlternatePath(libdir, libname, ".dll", MAX_PATH, filename, NULL);
/* build the modules filename */
if (!found)
{
if (!MODULE_GetBuiltinPath( libname, ".dll", filename, MAX_PATH ))
{
nts = STATUS_INTERNAL_ERROR;
goto error;
}
}
/* Check for already loaded module */
if (!(*pwm = MODULE_FindModule(filename)) && !FILE_contains_path(libname))
{
LPSTR fn = RtlAllocateHeap ( ntdll_get_process_heap(), 0, MAX_PATH + 1 );
if (fn)
{
/* since the default loading mechanism uses a more detailed algorithm
* than SearchPath (like using PATH, which can even be modified between
* two attempts of loading the same DLL), the look-up above (with
* SearchPath) can have put the file in system directory, whereas it
* has already been loaded but with a different path. So do a specific
* look-up with filename (without any path)
*/
strcpy ( fn, libname );
/* if the filename doesn't have an extension append .DLL */
if (!strrchr( fn, '.')) strcat( fn, ".dll" );
if ((*pwm = MODULE_FindModule( fn )) != NULL)
strcpy( filename, fn );
RtlFreeHeap( ntdll_get_process_heap(), 0, fn );
}
}
if (*pwm)
{
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;
PE_fixup_imports( *pwm );
}
TRACE("Already loaded module '%s' at %p, count=%d\n", filename, (*pwm)->ldr.BaseAddress, (*pwm)->ldr.LoadCount);
if (allocated_libdir)
{
RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir );
libdir = NULL;
}
RtlLeaveCriticalSection( &loader_section );
RtlFreeHeap( ntdll_get_process_heap(), 0, filename );
return STATUS_SUCCESS;
}
MODULE_GetLoadOrder( loadorder, filename, TRUE);
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", filename);
nts = PE_LoadLibraryExA(filename, flags, pwm);
filetype = "native";
break;
case LOADORDER_BI:
TRACE("Trying built-in '%s'\n", filename);
nts = BUILTIN32_LoadLibraryExA(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", filename, filetype, (*pwm)->ldr.BaseAddress);
if (!TRACE_ON(module))
TRACE_(loaddll)("Loaded module '%s' : %s\n", 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 (allocated_libdir)
{
RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir );
libdir = NULL;
}
RtlLeaveCriticalSection( &loader_section );
RtlFreeHeap( ntdll_get_process_heap(), 0, filename );
return nts;
}
if (nts != STATUS_NO_SUCH_FILE)
{
WARN("Loading of %s DLL %s failed (status %lx).\n",
filetype, filename, nts);
break;
}
}
error:
if (allocated_libdir)
{
RtlFreeHeap( ntdll_get_process_heap(), 0, (LPSTR)libdir );
libdir = NULL;
}
RtlLeaveCriticalSection( &loader_section );
WARN("Failed to load module '%s'; status=%lx\n", filename, nts);
RtlFreeHeap( ntdll_get_process_heap(), 0, filename );
return nts;
}
/******************************************************************
* LdrLoadDll (NTDLL.@)
*/
NTSTATUS WINAPI LdrLoadDll(LPCWSTR path_name, DWORD flags, PUNICODE_STRING libname, HMODULE* hModule)
{
WINE_MODREF *wm;
NTSTATUS nts = STATUS_SUCCESS;
STRING str;
RtlUnicodeStringToAnsiString(&str, libname, TRUE);
RtlEnterCriticalSection( &loader_section );
switch (nts = load_dll( str.Buffer, flags, &wm ))
{
case STATUS_SUCCESS:
nts = MODULE_DllProcessAttach( wm, NULL );
if (nts != STATUS_SUCCESS)
{
WARN("Attach failed for module '%s'.\n", str.Buffer);
LdrUnloadDll(wm->ldr.BaseAddress);
wm = NULL;
}
break;
case STATUS_NO_SUCH_FILE:
nts = STATUS_DLL_NOT_FOUND;
break;
default: /* keep error code as it is (memory...) */
break;
}
*hModule = (wm) ? wm->ldr.BaseAddress : NULL;
RtlLeaveCriticalSection( &loader_section );
RtlFreeAnsiString(&str);
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");
MODULE_DllProcessDetach( 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 (wm->ldr.LoadCount) continue;
RemoveEntryList(&wm->ldr.InLoadOrderModuleList);
RemoveEntryList(&wm->ldr.InMemoryOrderModuleList);
RemoveEntryList(&wm->ldr.InInitializationOrderModuleList);
TRACE(" unloading %s\n", wm->filename);
if (!TRACE_ON(module))
TRACE_(loaddll)("Unloaded module '%s' : %s\n", wm->filename,
wm->dlhandle ? "builtin" : "native" );
SERVER_START_REQ( unload_dll )
{
req->base = wm->ldr.BaseAddress;
wine_server_call( req );
}
SERVER_END_REQ;
if (wm->dlhandle) wine_dll_unload( wm->dlhandle );
else NtUnmapViewOfSection( GetCurrentProcess(), wm->ldr.BaseAddress );
if (cached_modref == wm) cached_modref = NULL;
RtlFreeHeap( ntdll_get_process_heap(), 0, wm->deps );
RtlFreeHeap( ntdll_get_process_heap(), 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", wm->modname, 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", wm->modname);
/* Recursively decrement reference counts */
MODULE_DecRefCount( wm );
/* Call process detach notifications */
if ( free_lib_count <= 1 )
{
MODULE_DllProcessDetach( 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;
}
/***********************************************************************
* 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);
}
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