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39f73ddeaa
wine/dlls/ntdll/loader.c
Alexandre Julliard 39f73ddeaa Merged PE_InitDLL into MODULE_InitDLL. 
Fixed a few traces.
2003-04-04 19:50:17 +00:00

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/*
* Loader functions
*
* Copyright 1995 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 "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(loaddll);
typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
WINE_MODREF *MODULE_modref_list = NULL;
static WINE_MODREF *exe_modref;
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 CRITICAL_SECTION loader_section = CRITICAL_SECTION_INIT( "loader_section" );
/*************************************************************************
* MODULE32_LookupHMODULE
* looks for the referenced HMODULE in the current process
* NOTE: Assumes that the process critical section is held!
*/
static WINE_MODREF *MODULE32_LookupHMODULE( HMODULE hmod )
{
WINE_MODREF *wm;
if (!hmod)
return exe_modref;
if (!HIWORD(hmod)) {
ERR("tried to lookup %p in win32 module handler!\n",hmod);
return NULL;
}
for ( wm = MODULE_modref_list; wm; wm=wm->next )
if (wm->ldr.BaseAddress == hmod)
return wm;
return NULL;
}
/*************************************************************************
* MODULE_AllocModRef
*
* Allocate a WINE_MODREF structure and add it to the process list
* NOTE: Assumes that the process critical section is held!
*/
WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename )
{
WINE_MODREF *wm;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader(hModule);
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->next = MODULE_modref_list;
if (wm->next) wm->next->prev = wm;
MODULE_modref_list = wm;
wm->ldr.InLoadOrderModuleList.Flink = NULL;
wm->ldr.InLoadOrderModuleList.Blink = NULL;
wm->ldr.InMemoryOrderModuleList.Flink = NULL;
wm->ldr.InMemoryOrderModuleList.Blink = NULL;
wm->ldr.InInitializationOrderModuleList.Flink = NULL;
wm->ldr.InInitializationOrderModuleList.Blink = NULL;
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;
if (!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
{
if (!exe_modref) exe_modref = wm;
else FIXME( "Trying to load second .EXE file: %s\n", filename );
}
else wm->ldr.Flags |= LDR_IMAGE_IS_DLL;
}
return wm;
}
/*************************************************************************
* MODULE_InitDLL
*/
static BOOL MODULE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
{
static const char * const typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
"THREAD_ATTACH", "THREAD_DETACH" };
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 (!entry || !(wm->ldr.Flags & LDR_IMAGE_IS_DLL)) return TRUE;
TRACE("(%p (%s),%s,%p) - CALL\n", module, wm->modname, typeName[type], lpReserved );
if (TRACE_ON(relay))
DPRINTF("%04lx:Call PE DLL (proc=%p,module=%p,type=%ld,res=%p)\n",
GetCurrentThreadId(), entry, module, type, lpReserved );
retv = entry( module, type, lpReserved );
if (TRACE_ON(relay))
DPRINTF("%04lx:Ret PE DLL (proc=%p,module=%p,type=%ld,res=%p) retval=%x\n",
GetCurrentThreadId(), entry, module, type, lpReserved, retv );
/* 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. */
TRACE("(%p,%s,%p) - RETURN %d\n", module, typeName[type], 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*.
*/
BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
{
BOOL retv = TRUE;
int i;
RtlEnterCriticalSection( &loader_section );
if (!wm)
{
wm = exe_modref;
PE_InitTls();
}
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; retv && i < wm->nDeps; i++ )
if ( wm->deps[i] )
retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
/* Call DLL entry point */
if ( retv )
{
retv = MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved );
if ( retv )
wm->ldr.Flags |= LDR_PROCESS_ATTACHED;
}
/* Re-insert MODREF at head of list */
if ( retv && wm->prev )
{
wm->prev->next = wm->next;
if ( wm->next ) wm->next->prev = wm->prev;
wm->prev = NULL;
wm->next = MODULE_modref_list;
MODULE_modref_list = wm->next->prev = wm;
}
/* Remove recursion flag */
wm->ldr.Flags &= ~LDR_LOAD_IN_PROGRESS;
TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
done:
RtlLeaveCriticalSection( &loader_section );
return retv;
}
/*************************************************************************
* 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.
*/
void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved )
{
WINE_MODREF *wm;
RtlEnterCriticalSection( &loader_section );
if (bForceDetach) process_detaching = 1;
do
{
for ( wm = MODULE_modref_list; wm; wm = wm->next )
{
/* Check whether to detach this DLL */
if ( !(wm->ldr.Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( wm->ldr.LoadCount > 0 && !bForceDetach )
continue;
/* Call detach notification */
wm->ldr.Flags &= ~LDR_PROCESS_ATTACHED;
MODULE_InitDLL( wm, 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 ( wm );
RtlLeaveCriticalSection( &loader_section );
}
/*************************************************************************
* MODULE_DllThreadAttach
*
* Send DLL thread attach notifications. These are sent in the
* reverse sequence of process detach notification.
*
*/
void MODULE_DllThreadAttach( LPVOID lpReserved )
{
WINE_MODREF *wm;
/* don't do any attach calls if process is exiting */
if (process_detaching) return;
/* FIXME: there is still a race here */
RtlEnterCriticalSection( &loader_section );
PE_InitTls();
for ( wm = MODULE_modref_list; wm; wm = wm->next )
if ( !wm->next )
break;
for ( ; wm; wm = wm->prev )
{
if ( !(wm->ldr.Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( wm->ldr.Flags & LDR_NO_DLL_CALLS )
continue;
MODULE_InitDLL( wm, DLL_THREAD_ATTACH, lpReserved );
}
RtlLeaveCriticalSection( &loader_section );
}
/******************************************************************
* LdrDisableThreadCalloutsForDll (NTDLL.@)
*
*/
NTSTATUS WINAPI LdrDisableThreadCalloutsForDll(HMODULE hModule)
{
WINE_MODREF *wm;
NTSTATUS ret = STATUS_SUCCESS;
RtlEnterCriticalSection( &loader_section );
wm = MODULE32_LookupHMODULE( hModule );
if ( !wm )
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* mod)
{
WINE_MODREF* wm;
for ( wm = MODULE_modref_list; wm; wm = wm->next )
{
if ((const void *)wm->ldr.BaseAddress <= addr &&
(char *)addr < (char*)wm->ldr.BaseAddress + wm->ldr.SizeOfImage)
{
*mod = &wm->ldr;
return STATUS_SUCCESS;
}
}
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;
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" );
for ( wm = MODULE_modref_list; wm; wm = wm->next )
{
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;
}
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;
if (x != 0 || y != 0)
FIXME("Unknown behavior, please report\n");
/* FIXME: we should store module name information as unicode */
if (name)
{
STRING str;
RtlUnicodeStringToAnsiString( &str, name, TRUE );
wm = MODULE_FindModule( str.Buffer );
RtlFreeAnsiString( &str );
}
else
wm = exe_modref;
if (!wm)
{
*base = 0;
return STATUS_DLL_NOT_FOUND;
}
*base = wm->ldr.BaseAddress;
TRACE("%lx %lx %s -> %p\n",
x, y, name ? debugstr_wn(name->Buffer, name->Length/sizeof(WCHAR)) : "(null)", *base);
return STATUS_SUCCESS;
}
/***********************************************************************
* MODULE_GetProcAddress (internal)
*/
FARPROC MODULE_GetProcAddress(
HMODULE hModule, /* [in] current module handle */
LPCSTR function, /* [in] function to be looked up */
int hint,
BOOL snoop )
{
WINE_MODREF *wm;
FARPROC retproc = 0;
RtlEnterCriticalSection( &loader_section );
if ((wm = MODULE32_LookupHMODULE( hModule )))
{
retproc = PE_FindExportedFunction( wm, function, hint, snoop );
}
RtlLeaveCriticalSection( &loader_section );
return retproc;
}
/******************************************************************
* LdrGetProcedureAddress (NTDLL.@)
*/
NTSTATUS WINAPI LdrGetProcedureAddress(HMODULE base, PANSI_STRING name, ULONG ord, PVOID *address)
{
*address = MODULE_GetProcAddress( base, name ? name->Buffer : (LPSTR)ord, -1, TRUE );
return (*address) ? STATUS_SUCCESS : STATUS_PROCEDURE_NOT_FOUND;
}
/***********************************************************************
* 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;
}
/***********************************************************************
* MODULE_LoadLibraryExA (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
*/
NTSTATUS MODULE_LoadLibraryExA( 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_SUCCESS;
*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)
{
(*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 %ld).\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=%ld\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 = MODULE_LoadLibraryExA( str.Buffer, flags, &wm ))
{
case STATUS_SUCCESS:
if ( !MODULE_DllProcessAttach( wm, NULL ) )
{
WARN("Attach failed for module '%s'.\n", str.Buffer);
LdrUnloadDll(wm->ldr.BaseAddress);
nts = STATUS_DLL_INIT_FAILED;
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;
WINE_MODREF* wm;
smi->ModulesCount = 0;
RtlEnterCriticalSection( &loader_section );
for ( wm = MODULE_modref_list; wm; wm = wm->next )
{
size += sizeof(*sm);
if (size <= buf_size)
{
sm->Reserved1 = 0; /* FIXME */
sm->Reserved2 = 0; /* FIXME */
sm->ImageBaseAddress = wm->ldr.BaseAddress;
sm->ImageSize = wm->ldr.SizeOfImage;
sm->Flags = wm->ldr.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, &wm->ldr.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.@)
*
*/
NTSTATUS WINAPI LdrShutdownProcess(void)
{
TRACE("()\n");
MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
return STATUS_SUCCESS; /* FIXME */
}
/******************************************************************
* LdrShutdownThread (NTDLL.@)
*
*/
NTSTATUS WINAPI LdrShutdownThread(void)
{
WINE_MODREF *wm;
TRACE("()\n");
/* don't do any detach calls if process is exiting */
if (process_detaching) return STATUS_SUCCESS;
/* FIXME: there is still a race here */
RtlEnterCriticalSection( &loader_section );
for ( wm = MODULE_modref_list; wm; wm = wm->next )
{
if ( !(wm->ldr.Flags & LDR_PROCESS_ATTACHED) )
continue;
if ( wm->ldr.Flags & LDR_NO_DLL_CALLS )
continue;
MODULE_InitDLL( wm, DLL_THREAD_DETACH, NULL );
}
RtlLeaveCriticalSection( &loader_section );
return STATUS_SUCCESS; /* FIXME */
}
/***********************************************************************
* MODULE_FlushModrefs
*
* NOTE: Assumes that the process critical section is held!
*
* Remove all unused modrefs and call the internal unloading routines
* for the library type.
*/
static void MODULE_FlushModrefs(void)
{
WINE_MODREF *wm, *next;
for (wm = MODULE_modref_list; wm; wm = next)
{
next = wm->next;
if (wm->ldr.LoadCount)
continue;
/* Unlink this modref from the chain */
if (wm->next)
wm->next->prev = wm->prev;
if (wm->prev)
wm->prev->next = wm->next;
if (wm == MODULE_modref_list)
MODULE_modref_list = wm->next;
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 );
FreeLibrary16( wm->hDummyMod );
RtlFreeHeap( ntdll_get_process_heap(), 0, wm->deps );
RtlFreeHeap( ntdll_get_process_heap(), 0, wm );
}
}
/***********************************************************************
* MODULE_DecRefCount
*
* NOTE: Assumes that the process critical section is held!
*/
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 = MODULE32_LookupHMODULE( 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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