posix/lib/psxdll/unistd/getcwd.c

   1 /* $Id: getcwd.c,v 1.4 2002/10/29 04:45:48 rex Exp $
   2  */
   3 /*
   4  * COPYRIGHT:   See COPYING in the top level directory
   5  * PROJECT:     ReactOS POSIX+ Subsystem
   6  * FILE:        subsys/psx/lib/psxdll/unistd/getcwd.c
   7  * PURPOSE:     Get the pathname of the current working directory
   8  * PROGRAMMER:  KJK::Hyperion <noog@libero.it>
   9  * UPDATE HISTORY:
  10  *              01/02/2002: Created
  11  */
  12
  13 #include <ddk/ntddk.h>
  14 #include <ntdll/rtl.h>
  15 #include <unistd.h>
  16 #include <stddef.h>
  17 #include <wchar.h>
  18 #include <psx/errno.h>
  19 #include <psx/stdlib.h>
  20 #include <psx/pdata.h>
  21
  22 wchar_t *_Wgetcwd(wchar_t *buf, size_t size)
  23 {
  24  PUNICODE_STRING pwstrCurDir;
  25
  26  __PdxAcquirePdataLock();
  27
  28  pwstrCurDir = __PdxGetCurDir();
  29
  30  if(size < (pwstrCurDir->Length / sizeof(WCHAR)))
  31  {
  32   __PdxReleasePdataLock();
  33   errno = ERANGE;
  34   return (0);
  35  }
  36  else
  37  {
  38   wcsncpy(buf, pwstrCurDir->Buffer, pwstrCurDir->Length);
  39   __PdxReleasePdataLock();
  40   return (buf);
  41  }
  42 }
  43
  44 char *getcwd(char *buf, size_t size)
  45 {
  46  PUNICODE_STRING pwstrCurDir;
  47
  48  __PdxAcquirePdataLock();
  49
  50  pwstrCurDir = __PdxGetCurDir();
  51
  52  if(size < (pwstrCurDir->Length / sizeof(WCHAR)))
  53  {
  54   __PdxReleasePdataLock();
  55   errno = ERANGE;
  56   return (0);
  57  }
  58  else
  59  {
  60   ANSI_STRING strBuffer;
  61   NTSTATUS    nErrCode;
  62
  63   strBuffer.Length = 0;
  64   strBuffer.MaximumLength = size;
  65   strBuffer.Buffer = buf;
  66
  67   nErrCode = RtlUnicodeStringToAnsiString
  68   (
  69    &strBuffer,
  70    pwstrCurDir,
  71    FALSE
  72   );
  73
  74   __PdxReleasePdataLock();
  75
  76   if(!NT_SUCCESS(nErrCode))
  77   {
  78    errno = __status_to_errno(nErrCode);
  79    return (0);
  80   }
  81
  82   return (buf);
  83  }
  84
  85  __PdxReleasePdataLock();
  86 }
  87
  88 /* EOF */
  89