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dbghelp: Detect collision by looking at module's base address in SymLoadModuleEx(). 

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-11-16 17:47:43 +01:00 committed by Alexandre Julliard
parent ced12a1a3a
commit 1465c7de2a
1 changed files with 38 additions and 35 deletions
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73
dlls/dbghelp/module.c
View File

@ -900,7 +900,8 @@ DWORD64 WINAPI SymLoadModuleExW(HANDLE hProcess, HANDLE hFile, PCWSTR wImageNam
PMODLOAD_DATA Data, DWORD Flags)
{
struct process* pcs;
struct module* module = NULL;
struct module* module = NULL;
struct module* altmodule;
TRACE("(%p %p %s %s %s %08x %p %08x)\n",
hProcess, hFile, debugstr_w(wImageName), debugstr_w(wModuleName),
@ -912,16 +913,6 @@ DWORD64 WINAPI SymLoadModuleExW(HANDLE hProcess, HANDLE hFile, PCWSTR wImageNam
if (!(pcs = process_find_by_handle(hProcess))) return 0;
if (Flags & SLMFLAG_VIRTUAL)
{
if (!wImageName) return 0;
module = module_new(pcs, wImageName, DMT_PE, TRUE, BaseOfDll, SizeOfDll, 0, 0, IMAGE_FILE_MACHINE_UNKNOWN);
if (!module) return 0;
if (wModuleName) module_set_module(module, wModuleName);
module->module.SymType = SymVirtual;
return module->module.BaseOfImage;
}
if (Flags & ~(SLMFLAG_VIRTUAL))
FIXME("Unsupported Flags %08x for %s\n", Flags, debugstr_w(wImageName));
@ -930,31 +921,18 @@ DWORD64 WINAPI SymLoadModuleExW(HANDLE hProcess, HANDLE hFile, PCWSTR wImageNam
/* this is a Wine extension to the API just to redo the synchronisation */
if (!wImageName && !hFile) return 0;
/* check if the module is already loaded, or if it's a builtin PE module with
* an containing ELF module
*/
if (wImageName)
if (Flags & SLMFLAG_VIRTUAL)
{
module = module_is_already_loaded(pcs, wImageName);
if (module)
{
if (module->module.BaseOfImage == BaseOfDll)
SetLastError(ERROR_SUCCESS);
else
{
/* native allows to load the same module at different addresses
* we don't support this for now
*/
SetLastError(ERROR_INVALID_PARAMETER);
FIXME("Reloading %s at different base address isn't supported\n", debugstr_w(module->modulename));
}
return 0;
}
if (!module && module_is_container_loaded(pcs, wImageName, BaseOfDll))
{
/* force the loading of DLL as builtin */
module = pe_load_builtin_module(pcs, wImageName, BaseOfDll, SizeOfDll);
}
if (!wImageName) return 0;
module = module_new(pcs, wImageName, DMT_PE, TRUE, BaseOfDll, SizeOfDll, 0, 0, IMAGE_FILE_MACHINE_UNKNOWN);
if (!module) return 0;
module->module.SymType = SymVirtual;
}
/* check if it's a builtin PE module with a containing ELF module */
else if (wImageName && module_is_container_loaded(pcs, wImageName, BaseOfDll))
{
/* force the loading of DLL as builtin */
module = pe_load_builtin_module(pcs, wImageName, BaseOfDll, SizeOfDll);
}
if (!module)
{
@ -978,6 +956,31 @@ DWORD64 WINAPI SymLoadModuleExW(HANDLE hProcess, HANDLE hFile, PCWSTR wImageNam
module_set_module(module, wModuleName);
if (wImageName)
lstrcpynW(module->module.ImageName, wImageName, ARRAY_SIZE(module->module.ImageName));
for (altmodule = pcs->lmodules; altmodule; altmodule = altmodule->next)
{
if (altmodule != module && altmodule->type == module->type &&
module->module.BaseOfImage >= altmodule->module.BaseOfImage &&
module->module.BaseOfImage < altmodule->module.BaseOfImage + altmodule->module.ImageSize)
break;
}
if (altmodule)
{
/* we have a conflict as the new module cannot be found by its base address
* we need to get rid of one on the two modules
*/
/* loading same module at same address... don't change anything */
if (module->module.BaseOfImage == altmodule->module.BaseOfImage)
{
module_remove(pcs, module);
SetLastError(ERROR_SUCCESS);
return 0;
}
module_remove(pcs, module);
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if ((dbghelp_options & SYMOPT_DEFERRED_LOADS) == 0)
module_load_debug(module);
return module->module.BaseOfImage;