reactos/lib/crt/io/pipe.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:   See COPYING in the top level directory
   4  * PROJECT:     ReactOS system libraries
   5  * FILE:        lib/msvcrt/io/pipe.c
   6  * PURPOSE:     Creates a pipe
   7  * PROGRAMER:   DJ Delorie
   8  * UPDATE HISTORY:
   9  *              28/12/98: Appropriated for Reactos
  10  */
  11
  12 #include "precomp.h"
  13 #include <io.h>
  14 #include <errno.h>
  15 #include <internal/file.h>
  16
  17 #define NDEBUG
  18 #include <internal/debug.h>
  19
  20
  21 /*
  22  * @implemented
  23  */
  24 int _pipe(int _fildes[2], unsigned int size, int mode )
  25 {
  26   HANDLE hReadPipe, hWritePipe;
  27   SECURITY_ATTRIBUTES sa = {sizeof(SECURITY_ATTRIBUTES), NULL, TRUE};
  28
  29   TRACE("_pipe((%i,%i), %ui, %i)", _fildes[0], _fildes[1], size, mode);
  30
  31   if (mode & O_NOINHERIT)
  32     sa.bInheritHandle = FALSE;
  33
  34   if (!CreatePipe(&hReadPipe,&hWritePipe,&sa,size)) {
  35                 _dosmaperr(GetLastError());
  36       return( -1);
  37         }
  38
  39   if ((_fildes[0] = alloc_fd(hReadPipe, split_oflags(mode))) < 0)
  40   {
  41     CloseHandle(hReadPipe);
  42     CloseHandle(hWritePipe);
  43     __set_errno(EMFILE);
  44     return(-1);
  45   }
  46
  47   if ((_fildes[1] = alloc_fd(hWritePipe, split_oflags(mode))) < 0)
  48   {
  49     free_fd(_fildes[0]);
  50     CloseHandle(hReadPipe);
  51     CloseHandle(hWritePipe);
  52     __set_errno(EMFILE);
  53     return(-1);
  54   }
  55   return(0);
  56 }