dllmain.c File Reference

#include "precomp.h"

Include dependency graph for dllmain.c:

Go to the source code of this file.

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (msvcrt)
int	BlockEnvToEnvironA (void)
int	BlockEnvToEnvironW (void)
void	FreeEnvironment (char **environment)
BOOL WINAPI	DllMain (PVOID hinstDll, ULONG dwReason, PVOID reserved)

Variables
unsigned int	_osplatform
unsigned int	_osver
unsigned int	_winminor
unsigned int	_winmajor
unsigned int	_winver
char *	_acmdln
wchar_t *	_wcmdln
char **	_environ
char **	__initenv
wchar_t **	_wenviron
wchar_t **	__winitenv

Function Documentation

BlockEnvToEnvironA()

int BlockEnvToEnvironA

(

void

)

Definition at line 34 of file environ.c.

{
   char *ptr, *environment_strings;
   char **envptr;
   int count = 1;
   size_t len;

   TRACE("BlockEnvToEnvironA()\n");

   environment_strings = GetEnvironmentStringsA();
   if (environment_strings == NULL) {
      return -1;
   }

   for (ptr = environment_strings; *ptr; ptr += len)
   {
      len = strlen(ptr) + 1;
      /* Skip drive letter settings. */
      if (*ptr != '=')
         count++;
   }

   __initenv = _environ = malloc(count * sizeof(char*));
   if (_environ)
   {
      for (ptr = environment_strings, envptr = _environ; count > 1; ptr += len)
      {
         len = strlen(ptr) + 1;
         /* Skip drive letter settings. */
         if (*ptr != '=')
         {
            if ((*envptr = malloc(len)) == NULL)
            {
               for (envptr--; envptr >= _environ; envptr--)
                  free(*envptr);
               FreeEnvironmentStringsA(environment_strings);
               free(_environ);
               __initenv = _environ = NULL;
               return -1;
            }
            memcpy(*envptr++, ptr, len);
            count--;
         }
      }
      /* Add terminating NULL entry. */
      *envptr = NULL;
   }

   FreeEnvironmentStringsA(environment_strings);
   return _environ ? 0 : -1;
}

BlockEnvToEnvironW()

int BlockEnvToEnvironW

(

void

)

Definition at line 86 of file environ.c.

{
   wchar_t *ptr, *environment_strings;
   wchar_t **envptr;
   int count = 1;
   size_t len;

   TRACE("BlockEnvToEnvironW()\n");

   environment_strings = GetEnvironmentStringsW();
   if (environment_strings == NULL) {
      return -1;
   }

   for (ptr = environment_strings; *ptr; ptr += len)
   {
      len = wcslen(ptr) + 1;
      /* Skip drive letter settings. */
      if (*ptr != '=')
         count++;
   }

   __winitenv = _wenviron = malloc(count * sizeof(wchar_t*));
   if (_wenviron)
   {
      for (ptr = environment_strings, envptr = _wenviron; count > 1; ptr += len)
      {
         len = wcslen(ptr) + 1;
         /* Skip drive letter settings. */
         if (*ptr != '=')
         {
            if ((*envptr = malloc(len * sizeof(wchar_t))) == NULL)
            {
               for (envptr--; envptr >= _wenviron; envptr--)
                  free(*envptr);
               FreeEnvironmentStringsW(environment_strings);
               free(_wenviron);
               __winitenv = _wenviron = NULL;
               return -1;
            }
            memcpy(*envptr++, ptr, len * sizeof(wchar_t));
            count--;
         }
      }
      /* Add terminating NULL entry. */
      *envptr = NULL;
   }

   FreeEnvironmentStringsW(environment_strings);
   return _wenviron ? 0 : -1;
}

DllMain()

BOOL WINAPI DllMain	(	PVOID	hinstDll,
		ULONG	dwReason,
		PVOID	reserved
	)

Definition at line 46 of file dllmain.c.

{
    OSVERSIONINFOW osvi;
    switch (dwReason)
    {
    case DLL_PROCESS_ATTACH:
        /* initialize version info */
        TRACE("Process Attach\n");
        osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
        GetVersionExW( &osvi );
        _winver     = (osvi.dwMajorVersion << 8) | osvi.dwMinorVersion;
        _winmajor   = osvi.dwMajorVersion;
        _winminor   = osvi.dwMinorVersion;
        _osplatform = osvi.dwPlatformId;
        _osver      = osvi.dwBuildNumber;

        /* create tls stuff */
        if (!msvcrt_init_tls())
          return FALSE;

        if (BlockEnvToEnvironA() < 0)
            return FALSE;

        if (BlockEnvToEnvironW() < 0)
        {
            FreeEnvironment(_environ);
            return FALSE;
        }

        _acmdln = _strdup(GetCommandLineA());
        _wcmdln = _wcsdup(GetCommandLineW());

        /* Initialization of the WINE code */
        msvcrt_init_mt_locks();
        //msvcrt_init_math();
        msvcrt_init_io();
        //msvcrt_init_console();
        //msvcrt_init_args();
        //msvcrt_init_signals();
        TRACE("Attach done\n");
        break;

    case DLL_THREAD_ATTACH:
        //msvcrt_get_thread_data creates data when first called
        break;

    case DLL_THREAD_DETACH:
        msvcrt_free_tls_mem();
        break;

    case DLL_PROCESS_DETACH:
        TRACE("Detach\n");
        /* Deinit of the WINE code */
        msvcrt_free_io();
        if (reserved) break;
        msvcrt_free_popen_data();
        msvcrt_free_mt_locks();
        //msvcrt_free_console();
        //msvcrt_free_args();
        //msvcrt_free_signals();
        msvcrt_free_tls_mem();
        if (!msvcrt_free_tls())
          return FALSE;
        if(global_locale)
          MSVCRT__free_locale(global_locale);

        if (__winitenv && __winitenv != _wenviron)
            FreeEnvironment((char**)__winitenv);
        if (_wenviron)
            FreeEnvironment((char**)_wenviron);

        if (__initenv && __initenv != _environ)
            FreeEnvironment(__initenv);
        if (_environ)
            FreeEnvironment(_environ);

        TRACE("Detach done\n");
        break;
    }

    return TRUE;
}

FreeEnvironment()

void FreeEnvironment

(

char **

environment

)

Internal function to deallocate environment block. Although it's parameter are defined as char**, it's able to work also with wide character environment block which are of type wchar_t**.

Parameters

environment

Environment to free.

Definition at line 190 of file environ.c.

{
   char **envptr;
   for (envptr = environment; *envptr != NULL; envptr++)
      free(*envptr);
   free(environment);
}

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

msvcrt

)

Variable Documentation

__initenv

char** __initenv

Definition at line 24 of file environ.c.

__winitenv

wchar_t** __winitenv

Definition at line 25 of file environ.c.

_acmdln

char* _acmdln

Definition at line 18 of file environ.c.

_environ

char** _environ

Definition at line 22 of file environ.c.

_osplatform

unsigned int _osplatform

Definition at line 10 of file environ.c.

Referenced by DllMain().

_osver

unsigned int _osver

Definition at line 11 of file environ.c.

_wcmdln

wchar_t* _wcmdln

Definition at line 19 of file environ.c.

_wenviron

wchar_t** _wenviron

Definition at line 23 of file environ.c.

_winmajor

unsigned int _winmajor

Definition at line 13 of file environ.c.

_winminor

unsigned int _winminor

Definition at line 12 of file environ.c.

_winver

unsigned int _winver

Definition at line 14 of file environ.c.