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pipe3d.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1989-2007 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Eduardo Krell <ekrell@adexus.cl>                   *
*                                                                      *
***********************************************************************/
#pragma prototyped

#include "3d.h"

#ifdef pipe3d

int
pipe3d(int* fds)
{
      int         r;
#if !_mangle_syscall
      int         fd;
#endif

      initialize();
#if !_mangle_syscall
      if (r = (state.fs[FS_option].flags & FS_ON) != 0) state.fs[FS_option].flags &= ~FS_ON;
      for (fd = 0; fd < OPEN_MAX; fd++)
            if ((fds[0] = DUP(fd)) >= 0)
            {
                  fds[1] = DUP(fds[0]);
                  CLOSE(fds[1]);
                  CLOSE(fds[0]);
                  break;
            }
      if (r) state.fs[FS_option].flags |= FS_ON;
#endif
      r = PIPE(fds);
#if FS
      if (!r && !state.in_2d)
      {
            Mount_t*    mp;

            for (mp = state.global; mp; mp = mp->global)
                  if (fssys(mp, MSG_pipe))
                        fscall(mp, MSG_pipe, 0, fds);
      }
#endif
      return(r);
}

#else

NoN(pipe)

#endif

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