reactos/lib/msvcrt/misc/dllmain.c

   1 /* $Id: dllmain.c,v 1.8 2001/07/12 16:28:24 ekohl Exp $
   2  *
   3  * ReactOS MSVCRT.DLL Compatibility Library
   4  */
   5 #include <windows.h>
   6
   7 #include <msvcrt/internal/tls.h>
   8 #include <msvcrt/stdlib.h>
   9
  10 static int nAttachCount = 0;
  11
  12 unsigned int _osver = 0;
  13 unsigned int _winminor = 0;
  14 unsigned int _winmajor = 0;
  15 unsigned int _winver = 0;
  16
  17 char *_acmdln = NULL;           /* pointer to ascii command line */
  18 #undef _environ
  19 char **_environ = NULL;         /* pointer to environment block */
  20 char ***_environ_dll = &_environ;/* pointer to environment block */
  21
  22 char **__initenv = NULL;
  23
  24 char *_pgmptr = NULL;           /* pointer to program name */
  25
  26 int __app_type = 0; //_UNKNOWN_APP;     /* application type */
  27
  28 int __mb_cur_max = 1;
  29
  30 static int envAlloced = 0;
  31
  32
  33 /* FUNCTIONS **************************************************************/
  34
  35 int BlockEnvToEnviron()
  36 {
  37 char * ptr;
  38 int i;
  39   if (!envAlloced)
  40   {
  41     envAlloced = 50;
  42     _environ = malloc (envAlloced * sizeof (char **));
  43     if (!_environ) return -1;
  44     _environ[0] =NULL;
  45   }
  46   ptr = (char *)GetEnvironmentStringsA();
  47   if (!ptr) return -1;
  48   for (i = 0 ; *ptr ; i++)
  49   {
  50     _environ[i] = ptr;
  51     while(*ptr) ptr++;
  52     ptr++;
  53   }
  54   _environ[i] =0;
  55   return 0;
  56 }
  57
  58 BOOLEAN __stdcall
  59 DllMain(PVOID hinstDll,
  60         ULONG dwReason,
  61         PVOID reserved)
  62 {
  63         switch (dwReason)
  64         {
  65                 case DLL_PROCESS_ATTACH://1
  66                         /* initialize version info */
  67                         _osver = GetVersion();
  68                         _winmajor = (_osver >> 8) & 0xFF;
  69                         _winminor = _osver & 0xFF;
  70                         _winver = (_winmajor << 8) + _winminor;
  71                         _osver = (_osver >> 16) & 0xFFFF;
  72
  73                         /* create tls stuff */
  74                         if (!CreateThreadData())
  75                                 return FALSE;
  76
  77                         _acmdln = (char *)GetCommandLineA();
  78                         if( BlockEnvToEnviron() )
  79                           return FALSE;
  80
  81                         /* FIXME: more initializations... */
  82
  83                         nAttachCount++;
  84                         break;
  85
  86                 case DLL_THREAD_ATTACH://2
  87                         break;
  88
  89                 case DLL_THREAD_DETACH://4
  90                         FreeThreadData(NULL);
  91                         break;
  92
  93                 case DLL_PROCESS_DETACH://0
  94                         if (nAttachCount > 0)
  95                         {
  96                                 nAttachCount--;
  97
  98                                 /* FIXME: more cleanup... */
  99
 100                                 /* destroy tls stuff */
 101                                 DestroyThreadData();
 102                         }
 103                         break;
 104         }
 105
 106         return TRUE;
 107 }
 108
 109
 110
 111 void __set_app_type(int app_type)
 112 {
 113    __app_type = app_type;
 114 }
 115
 116
 117 char **__p__acmdln(void)
 118 {
 119    return &_acmdln;
 120 }
 121
 122 char ***__p__environ(void)
 123 {
 124    return _environ_dll;
 125 }
 126
 127 char ***__p___initenv(void)
 128 {
 129    return &__initenv;
 130 }
 131
 132 int *__p___mb_cur_max(void)
 133 {
 134    return &__mb_cur_max;
 135 }
 136
 137 unsigned int *__p__osver(void)
 138 {
 139    return &_osver;
 140 }
 141
 142 char **__p__pgmptr(void)
 143 {
 144    return &_pgmptr;
 145 }
 146
 147 unsigned int *__p__winmajor(void)
 148 {
 149    return &_winmajor;
 150 }
 151
 152 unsigned int *__p__winminor(void)
 153 {
 154    return &_winminor;
 155 }
 156
 157 unsigned int *__p__winver(void)
 158 {
 159    return &_winver;
 160 }
 161
 162
 163
 164 /* EOF */