reactos/lib/msvcrt/io/pipe.c

   1 /* $Id: pipe.c,v 1.2 2002/05/07 22:31:25 hbirr Exp $
   2  *
   3  * COPYRIGHT:   See COPYING in the top level directory
   4  * PROJECT:     ReactOS system libraries
   5  * FILE:        lib/crtdll/io/pipe.c
   6  * PURPOSE:     Creates a pipe
   7  * PROGRAMER:   DJ Delorie
   8  * UPDATE HISTORY:
   9  *              28/12/98: Appropriated for Reactos
  10  */
  11 #include <windows.h>
  12 #include <msvcrt/io.h>
  13 #include <msvcrt/errno.h>
  14 #include <msvcrt/internal/file.h>
  15
  16
  17 int _pipe(int _fildes[2], unsigned int size, int mode )
  18 {
  19   HANDLE hReadPipe, hWritePipe;
  20   SECURITY_ATTRIBUTES sa = {sizeof(SECURITY_ATTRIBUTES), NULL, TRUE};
  21
  22   if (mode & O_NOINHERIT)
  23     sa.bInheritHandle = FALSE;
  24
  25   if (!CreatePipe(&hReadPipe,&hWritePipe,&sa,size))
  26     return -1;
  27
  28   if ((_fildes[0] = __fileno_alloc(hReadPipe, mode)) < 0)
  29   {
  30     CloseHandle(hReadPipe);
  31     CloseHandle(hWritePipe);
  32     __set_errno(EMFILE);
  33     return -1;
  34   }
  35
  36   if ((_fildes[1] = __fileno_alloc(hWritePipe, mode)) < 0)
  37   {
  38     __fileno_close(_fildes[0]);
  39     CloseHandle(hReadPipe);
  40     CloseHandle(hWritePipe);
  41     __set_errno(EMFILE);
  42     return -1;
  43   }
  44   return 0;
  45 }