48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/***********************************************************************/
|
|
/* */
|
|
/* 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 Library General Public License, with */
|
|
/* the special exception on linking described in 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
|