reactos/lib/msvcrt/misc/dllmain.c

   1 /* $Id: dllmain.c,v 1.9 2001/07/27 23:54:05 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
  79                         /* FIXME: This crashes all applications */
  80 //                      if( BlockEnvToEnviron() )
  81 //                        return FALSE;
  82
  83                         /* FIXME: more initializations... */
  84
  85                         nAttachCount++;
  86                         break;
  87
  88                 case DLL_THREAD_ATTACH://2
  89                         break;
  90
  91                 case DLL_THREAD_DETACH://4
  92                         FreeThreadData(NULL);
  93                         break;
  94
  95                 case DLL_PROCESS_DETACH://0
  96                         if (nAttachCount > 0)
  97                         {
  98                                 nAttachCount--;
  99
 100                                 /* FIXME: more cleanup... */
 101
 102                                 /* destroy tls stuff */
 103                                 DestroyThreadData();
 104                         }
 105                         break;
 106         }
 107
 108         return TRUE;
 109 }
 110
 111
 112
 113 void __set_app_type(int app_type)
 114 {
 115    __app_type = app_type;
 116 }
 117
 118
 119 char **__p__acmdln(void)
 120 {
 121    return &_acmdln;
 122 }
 123
 124 char ***__p__environ(void)
 125 {
 126    return _environ_dll;
 127 }
 128
 129 char ***__p___initenv(void)
 130 {
 131    return &__initenv;
 132 }
 133
 134 int *__p___mb_cur_max(void)
 135 {
 136    return &__mb_cur_max;
 137 }
 138
 139 unsigned int *__p__osver(void)
 140 {
 141    return &_osver;
 142 }
 143
 144 char **__p__pgmptr(void)
 145 {
 146    return &_pgmptr;
 147 }
 148
 149 unsigned int *__p__winmajor(void)
 150 {
 151    return &_winmajor;
 152 }
 153
 154 unsigned int *__p__winminor(void)
 155 {
 156    return &_winminor;
 157 }
 158
 159 unsigned int *__p__winver(void)
 160 {
 161    return &_winver;
 162 }
 163
 164
 165
 166 /* EOF */