posix/lib/psxdll/misc/main.c

   1 /* $Id: main.c,v 1.4 2002/05/17 02:04:39 hyperion Exp $
   2  */
   3 /*
   4  * COPYRIGHT:   See COPYING in the top level directory
   5  * PROJECT:     ReactOS POSIX+ Subsystem
   6  * FILE:        subsys/psx/lib/psxdll/misc/main.c
   7  * PURPOSE:     psxdll.dll entry point
   8  * PROGRAMMER:  KJK::Hyperion <noog@libero.it>
   9  * UPDATE HISTORY:
  10  *              27/12/2001: Created
  11  */
  12
  13 #include <ddk/ntddk.h>
  14 #include <string.h>
  15 #include <psx/debug.h>
  16 #include <psx/fdtable.h>
  17 #include <psx/pdata.h>
  18 #include <psx/stdlib.h>
  19 #include <psx/tls.h>
  20
  21 #define DLL_PROCESS_ATTACH 1
  22 #define DLL_THREAD_ATTACH  2
  23 #define DLL_THREAD_DETACH  3
  24 #define DLL_PROCESS_DETACH 0
  25
  26 /* WARNING: PRELIMINARY CODE FOR DEBUGGING PURPOSES ONLY - DO NOT CHANGE */
  27 static __PDX_PDATA __PdxPdata;
  28 static WCHAR __tempPathBuf[32768];
  29 static char * __tempSelf = "-sh";
  30 static char * __tempArgv[2] = {0, 0};
  31
  32 VOID __PdxSetProcessData(__PPDX_PDATA NewPdata)
  33 {
  34  memcpy(&__PdxPdata, NewPdata, sizeof(__PdxPdata));
  35 }
  36
  37 __PPDX_PDATA __PdxGetProcessData(VOID)
  38 {
  39  return &__PdxPdata;
  40 }
  41
  42 BOOL STDCALL DllMain(PVOID pDllInstance, DWORD nReason, PVOID pUnknown)
  43 {
  44  ULONG nJunk;
  45
  46  switch(nReason)
  47  {
  48   /* process created, first thread created */
  49   case DLL_PROCESS_ATTACH:
  50   {
  51    __PPDX_TDATA ThreadData;
  52    int i;
  53
  54    INFO("new process and new thread created");
  55
  56    __PdxPdata.Spawned = 1;
  57
  58    __PdxPdata.ArgCount = 1;
  59    __tempArgv[0] = __tempSelf;
  60    __PdxPdata.ArgVect = __tempArgv;
  61
  62    __PdxPdata.NativePathBuffer.Length = 0;
  63    __PdxPdata.NativePathBuffer.MaximumLength = sizeof(__tempPathBuf);
  64    __PdxPdata.NativePathBuffer.Buffer = __tempPathBuf;
  65
  66    INFO("about to initialize process data lock");
  67    RtlInitializeCriticalSection(&__PdxPdata.Lock);
  68
  69    INFO("about to allocate TLS slot");
  70    __PdxPdata.TlsIndex = RtlFindClearBitsAndSet(NtCurrentPeb()->TlsBitmap, 1, 0);
  71
  72    if(__PdxPdata.TlsIndex == -1)
  73    {
  74     DbgBreakPoint();
  75     NtRaiseHardError(STATUS_NO_MEMORY, 0, 0, 0, 1, (ULONG)&nJunk);
  76     return (FALSE);
  77    }
  78
  79    INFO("allocated TLS slot %d", __PdxPdata.TlsIndex);
  80
  81    INFO("about to allocate thread data");
  82    ThreadData = __malloc(sizeof(*ThreadData));
  83
  84    if(ThreadData == 0)
  85    {
  86     DbgBreakPoint();
  87     NtRaiseHardError(STATUS_NO_MEMORY, 0, 0, 0, 1, (ULONG)&nJunk);
  88     return (FALSE);
  89    }
  90
  91    NtCurrentTeb()->TlsSlots[__PdxPdata.TlsIndex] = ThreadData;
  92
  93    INFO("about to initialize file descriptors table");
  94    __fdtable_init(&__PdxPdata.FdTable);
  95
  96    INFO("end of initialization");
  97    return (TRUE);
  98   }
  99
 100   /* process about to exit */
 101   case DLL_PROCESS_DETACH:
 102   {
 103    INFO("process about to exit");
 104
 105    INFO("about to deallocate thread data");
 106    __free(NtCurrentTeb()->TlsSlots[__PdxPdata.TlsIndex]);
 107
 108    return (TRUE);
 109   }
 110
 111   /* thread created */
 112   case DLL_THREAD_ATTACH:
 113   {
 114    __PPDX_TDATA ThreadData;
 115
 116    INFO("new thread created");
 117
 118    INFO("about to allocate thread data");
 119    ThreadData = __malloc(sizeof(*ThreadData));
 120
 121    if(ThreadData == 0)
 122    {
 123     DbgBreakPoint();
 124     NtRaiseHardError(STATUS_NO_MEMORY, 0, 0, 0, 1, (ULONG)&nJunk);
 125     return (FALSE);
 126    }
 127
 128    NtCurrentTeb()->TlsSlots[__PdxPdata.TlsIndex] = ThreadData;
 129
 130    return (TRUE);
 131   }
 132
 133   /* thread exited */
 134   case DLL_THREAD_DETACH:
 135   {
 136    INFO("thread about to exit");
 137
 138    INFO("about to deallocate thread data");
 139    __free(NtCurrentTeb()->TlsSlots[__PdxPdata.TlsIndex]);
 140
 141    return (TRUE);
 142   }
 143  }
 144
 145  return (FALSE);
 146 }
 147
 148 /* EOF */
 149