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41 lines
775 B
C
41 lines
775 B
C
/* $Id: dup.c,v 1.2 2002/02/20 09:17:58 hyperion Exp $
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*/
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS POSIX+ Subsystem
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* FILE: subsys/psx/lib/psxdll/unistd/dup.c
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* PURPOSE: Duplicate an open file descriptor
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* PROGRAMMER: KJK::Hyperion <noog@libero.it>
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* UPDATE HISTORY:
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* 13/02/2002: Created
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*/
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#include <unistd.h>
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#include <limits.h>
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#include <errno.h>
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#include <fcntl.h>
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int dup(int fildes)
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{
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return (fcntl(fildes, F_DUPFD, 0));
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}
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int dup2(int fildes, int fildes2)
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{
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if(fildes < 0 || fildes >= OPEN_MAX)
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{
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errno = EBADF;
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return (-1);
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}
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/* TODO: check if fildes is valid */
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if(fildes == fildes2)
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return fildes2;
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close(fildes2);
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return (fcntl(fildes, F_DUPFD, fildes2));
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}
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/* EOF */
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