mirror of
git://source.winehq.org/git/wine.git
synced 2024-09-01 13:33:42 +00:00
![Kevin Puetz](/assets/img/avatar_default.png)
MSVC's delayimp.lib does not actually free delayload dependencies. winecrt0's attempt to do so from ELF __attribute__((destructor)) is unnecessary and potentially harmful: - When triggered naturally via LdrUnloadDll, this leads to recursive calls to FreeLibrary, violating free_lib_count and missing DLL_PROCESS_DETACH - when triggered by glibc's _dl_fini (at process exit), it leads to use-after-free of the TEB (GetCurrentThreadID after the main thread is no longer Win32) via FreeLibrary -> LdrLdrUnloadDll -> RtlEnterCriticalSection( &loader_section ) - double-free of the library itself, since the DLL_PROCESS_DETACH has already been handled by LdrShutdownProcess - Race against wineserver sending a SIGKILL from process_killed, since all Win32 threads of the process have exited Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53032
73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*
|
|
* Support for delayed imports
|
|
*
|
|
* Copyright 2005 Alexandre Julliard
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "delayloadhandler.h"
|
|
|
|
WINBASEAPI void *WINAPI DelayLoadFailureHook( LPCSTR name, LPCSTR function );
|
|
|
|
#ifdef __WINE_PE_BUILD
|
|
|
|
extern IMAGE_DOS_HEADER __ImageBase;
|
|
|
|
WINBASEAPI void *WINAPI ResolveDelayLoadedAPI( void* base, const IMAGE_DELAYLOAD_DESCRIPTOR* desc,
|
|
PDELAYLOAD_FAILURE_DLL_CALLBACK dllhook,
|
|
PDELAYLOAD_FAILURE_SYSTEM_ROUTINE syshook,
|
|
IMAGE_THUNK_DATA* addr, ULONG flags );
|
|
|
|
FARPROC WINAPI __delayLoadHelper2( const IMAGE_DELAYLOAD_DESCRIPTOR *descr, IMAGE_THUNK_DATA *addr )
|
|
{
|
|
return ResolveDelayLoadedAPI( &__ImageBase, descr, NULL, DelayLoadFailureHook, addr, 0 );
|
|
}
|
|
|
|
#else /* __WINE_PE_BUILD */
|
|
|
|
struct ImgDelayDescr
|
|
{
|
|
DWORD_PTR grAttrs;
|
|
LPCSTR szName;
|
|
HMODULE *phmod;
|
|
IMAGE_THUNK_DATA *pIAT;
|
|
const IMAGE_THUNK_DATA *pINT;
|
|
const IMAGE_THUNK_DATA *pBoundIAT;
|
|
const IMAGE_THUNK_DATA *pUnloadIAT;
|
|
DWORD_PTR dwTimeStamp;
|
|
};
|
|
|
|
extern struct ImgDelayDescr __wine_spec_delay_imports[];
|
|
|
|
FARPROC WINAPI DECLSPEC_HIDDEN __wine_spec_delay_load( unsigned int id )
|
|
{
|
|
struct ImgDelayDescr *descr = __wine_spec_delay_imports + HIWORD(id);
|
|
WORD func = LOWORD(id);
|
|
FARPROC proc;
|
|
|
|
if (!*descr->phmod) *descr->phmod = LoadLibraryA( descr->szName );
|
|
if (!*descr->phmod ||
|
|
!(proc = GetProcAddress( *descr->phmod, (LPCSTR)descr->pINT[func].u1.Function )))
|
|
proc = DelayLoadFailureHook( descr->szName, (LPCSTR)descr->pINT[func].u1.Function );
|
|
descr->pIAT[func].u1.Function = (ULONG_PTR)proc;
|
|
return proc;
|
|
}
|
|
|
|
#endif /* __WINE_PE_BUILD */
|