[thirdparty/glibc.git] / sysdeps / posix / dup.c

/* Copyright (C) 1991, 1995, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <fcntl.h>
#include <unistd.h>


/* Duplicate FD, returning a new file descriptor open on the same file.  */
int
__dup (fd)
     int fd;
{
  return fcntl (fd, F_DUPFD, 0);
}

weak_alias (__dup, dup)
Commit	Line	Data
ebbad4cc UD	1	/* Copyright (C) 1991, 1995, 1997 Free Software Foundation, Inc.
ebbad4cc UD	2	This file is part of the GNU C Library.
28f540f4	3
ebbad4cc	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
28f540f4	8
ebbad4cc UD	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	12	Lesser General Public License for more details.
28f540f4	13
41bdb6e2 AJ	14	You should have received a copy of the GNU Lesser General Public
	15	License along with the GNU C Library; if not, write to the Free
	16	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	17	02111-1307 USA. */
28f540f4	18
28f540f4 RM	19	#include <errno.h>
	20	#include <fcntl.h>
	21	#include <unistd.h>
	22
	23
	24	/* Duplicate FD, returning a new file descriptor open on the same file. */
	25	int
ebbad4cc UD	26	__dup (fd)
ebbad4cc UD	27	int fd;
28f540f4	28	{
ebbad4cc	29	return fcntl (fd, F_DUPFD, 0);
28f540f4 RM	30	}
	31
	32	weak_alias (__dup, dup)