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ntdll: Add a helper function to allocate process parameters.

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Alexandre Julliard 2022-09-09 15:28:14 +02:00
parent 5d99b2a32c
commit 3a49b5d77d
1 changed files with 57 additions and 41 deletions
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98
dlls/ntdll/env.c
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@ -514,6 +514,55 @@ static void append_unicode_string( void **data, const UNICODE_STRING *src,
else dst->Buffer = NULL;
}
static RTL_USER_PROCESS_PARAMETERS *alloc_process_params( const UNICODE_STRING *image,
const UNICODE_STRING *dllpath,
const UNICODE_STRING *curdir,
const UNICODE_STRING *cmdline,
const WCHAR *env,
const UNICODE_STRING *title,
const UNICODE_STRING *desktop,
const UNICODE_STRING *shell,
const UNICODE_STRING *runtime )
{
RTL_USER_PROCESS_PARAMETERS *params;
SIZE_T size, env_size = 0;
void *ptr;
if (env) env_size = get_env_length( env ) * sizeof(WCHAR);
size = (sizeof(RTL_USER_PROCESS_PARAMETERS)
+ ROUND_SIZE( image->MaximumLength )
+ ROUND_SIZE( dllpath->MaximumLength )
+ ROUND_SIZE( curdir->MaximumLength )
+ ROUND_SIZE( cmdline->MaximumLength )
+ ROUND_SIZE( title->MaximumLength )
+ ROUND_SIZE( desktop->MaximumLength )
+ ROUND_SIZE( shell->MaximumLength )
+ ROUND_SIZE( runtime->MaximumLength ));
if (!(ptr = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, size + ROUND_SIZE( env_size ) )))
return NULL;
params = ptr;
params->AllocationSize = size;
params->Size = size;
params->Flags = PROCESS_PARAMS_FLAG_NORMALIZED;
params->EnvironmentSize = ROUND_SIZE( env_size );
/* all other fields are zero */
ptr = params + 1;
append_unicode_string( &ptr, curdir, &params->CurrentDirectory.DosPath );
append_unicode_string( &ptr, dllpath, &params->DllPath );
append_unicode_string( &ptr, image, &params->ImagePathName );
append_unicode_string( &ptr, cmdline, &params->CommandLine );
append_unicode_string( &ptr, title, &params->WindowTitle );
append_unicode_string( &ptr, desktop, &params->Desktop );
append_unicode_string( &ptr, shell, &params->ShellInfo );
append_unicode_string( &ptr, runtime, &params->RuntimeInfo );
if (env) params->Environment = memcpy( ptr, env, env_size );
return params;
}
/******************************************************************************
* RtlCreateProcessParametersEx [NTDLL.@]
@ -532,8 +581,6 @@ NTSTATUS WINAPI RtlCreateProcessParametersEx( RTL_USER_PROCESS_PARAMETERS **resu
{
UNICODE_STRING curdir;
const RTL_USER_PROCESS_PARAMETERS *cur_params;
SIZE_T size, env_size = 0;
void *ptr;
NTSTATUS status = STATUS_SUCCESS;
RtlAcquirePebLock();
@ -556,40 +603,11 @@ NTSTATUS WINAPI RtlCreateProcessParametersEx( RTL_USER_PROCESS_PARAMETERS **resu
if (!ShellInfo) ShellInfo = &empty_str;
if (!RuntimeInfo) RuntimeInfo = &null_str;
if (Environment) env_size = get_env_length( Environment ) * sizeof(WCHAR);
size = (sizeof(RTL_USER_PROCESS_PARAMETERS)
+ ROUND_SIZE( ImagePathName->MaximumLength )
+ ROUND_SIZE( DllPath->MaximumLength )
+ ROUND_SIZE( curdir.MaximumLength )
+ ROUND_SIZE( CommandLine->MaximumLength )
+ ROUND_SIZE( WindowTitle->MaximumLength )
+ ROUND_SIZE( Desktop->MaximumLength )
+ ROUND_SIZE( ShellInfo->MaximumLength )
+ ROUND_SIZE( RuntimeInfo->MaximumLength ));
if ((ptr = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, size + ROUND_SIZE( env_size ) )))
if ((*result = alloc_process_params( ImagePathName, DllPath, &curdir, CommandLine,
Environment, WindowTitle, Desktop, ShellInfo, RuntimeInfo )))
{
RTL_USER_PROCESS_PARAMETERS *params = ptr;
params->AllocationSize = size;
params->Size = size;
params->Flags = PROCESS_PARAMS_FLAG_NORMALIZED;
params->EnvironmentSize = ROUND_SIZE( env_size );
if (cur_params) params->ConsoleFlags = cur_params->ConsoleFlags;
/* all other fields are zero */
ptr = params + 1;
append_unicode_string( &ptr, &curdir, &params->CurrentDirectory.DosPath );
append_unicode_string( &ptr, DllPath, &params->DllPath );
append_unicode_string( &ptr, ImagePathName, &params->ImagePathName );
append_unicode_string( &ptr, CommandLine, &params->CommandLine );
append_unicode_string( &ptr, WindowTitle, &params->WindowTitle );
append_unicode_string( &ptr, Desktop, &params->Desktop );
append_unicode_string( &ptr, ShellInfo, &params->ShellInfo );
append_unicode_string( &ptr, RuntimeInfo, &params->RuntimeInfo );
if (Environment) params->Environment = memcpy( ptr, Environment, env_size );
*result = params;
if (!(flags & PROCESS_PARAMS_FLAG_NORMALIZED)) RtlDeNormalizeProcessParams( params );
if (cur_params) (*result)->ConsoleFlags = cur_params->ConsoleFlags;
if (!(flags & PROCESS_PARAMS_FLAG_NORMALIZED)) RtlDeNormalizeProcessParams( *result );
}
else status = STATUS_NO_MEMORY;
@ -646,12 +664,10 @@ void init_user_process_params(void)
else env[0] = 0;
}
params->Environment = NULL; /* avoid copying it */
if (RtlCreateProcessParametersEx( &new_params, &params->ImagePathName, &params->DllPath,
&params->CurrentDirectory.DosPath,
&params->CommandLine, NULL, &params->WindowTitle, &params->Desktop,
&params->ShellInfo, &params->RuntimeInfo,
PROCESS_PARAMS_FLAG_NORMALIZED ))
if (!(new_params = alloc_process_params( &params->ImagePathName, &params->DllPath,
&params->CurrentDirectory.DosPath, &params->CommandLine,
NULL, &params->WindowTitle, &params->Desktop,
&params->ShellInfo, &params->RuntimeInfo )))
return;
new_params->Environment = env;