49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include <mlvalues.h>
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#include "unixsupport.h"
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#ifdef HAS_DUP2
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value unix_dup2(value fd1, value fd2) /* ML */
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{
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if (dup2(Int_val(fd1), Int_val(fd2)) == -1) uerror("dup2", Nothing);
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return Val_unit;
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}
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#else
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static int do_dup2(int fd1, int fd2)
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{
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int fd;
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int res;
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fd = dup(fd1);
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if (fd == -1) return -1;
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if (fd == fd2) return 0;
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res = do_dup2(fd1, fd2);
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close(fd);
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return res;
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}
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value unix_dup2(value fd1, value fd2)
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{
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close(Int_val(fd2));
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if (do_dup2(Int_val(fd1), Int_val(fd2)) == -1) uerror("dup2", Nothing);
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return Val_unit;
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}
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#endif
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