compiler/clib/pipe.c

   1 /*
   2     Copyright © 1995-2004, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <proto/dos.h>
   7
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <fcntl.h>
  11
  12 #include "__errno.h"
  13 #include "__open.h"
  14
  15 int pipe(int *pipedes)
  16 {
  17     BPTR reader, writer;
  18     fdesc *rdesc, *wdesc;
  19
  20     if (!pipedes)
  21     {
  22         errno = EFAULT;
  23
  24         return -1;
  25     }
  26
  27     if ((rdesc = malloc(sizeof(fdesc))) == NULL)
  28         return -1;
  29     if ((wdesc = malloc(sizeof(fdesc))) == NULL) {
  30         free(rdesc);
  31         return -1;
  32     }
  33
  34     if (Pipe("PIPEFS:", &reader, &writer) != DOSTRUE) {
  35         errno = IoErr2errno(IoErr());
  36         free(rdesc);
  37         free(wdesc);
  38         return -1;
  39     }
  40
  41     pipedes[0] = __getfdslot(__getfirstfd(0));
  42     rdesc->fh        = reader;
  43     rdesc->flags     = O_RDONLY;
  44     rdesc->opencount = 1;
  45     __setfdesc(pipedes[0], rdesc);
  46
  47     pipedes[1] = __getfdslot(__getfirstfd(pipedes[0]));
  48     wdesc->fh        = writer;
  49     wdesc->flags     = O_WRONLY;
  50     wdesc->opencount = 1;
  51     __setfdesc(pipedes[1], wdesc);
  52
  53     return 0;
  54 }