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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#include <caml/mlvalues.h>
#include "unixsupport.h"
#ifdef HAS_DUP2
CAMLprim value unix_dup2(value fd1, value fd2)
{
if (dup2(Int_val(fd1), Int_val(fd2)) == -1) uerror("dup2", Nothing);
return Val_unit;
}
#else
static int do_dup2(int fd1, int fd2)
{
int fd;
int res;
fd = dup(fd1);
if (fd == -1) return -1;
if (fd == fd2) return 0;
res = do_dup2(fd1, fd2);
close(fd);
return res;
}
CAMLprim value unix_dup2(value fd1, value fd2)
{
close(Int_val(fd2));
if (do_dup2(Int_val(fd1), Int_val(fd2)) == -1) uerror("dup2", Nothing);
return Val_unit;
}
#endif
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