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annotate lib/dup-safer.c @ 17476:6057744acd2c default tip master

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author Karl Berry <karl@freefriends.org>
date Fri, 16 Aug 2013 06:32:22 -0700 (2013-08-16)
parents e542fd46ad6f
children
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1 /* Invoke dup, but avoid some glitches.
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Paul Eggert <eggert@cs.ucla.edu>
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2
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Eric Blake <eblake@redhat.com>
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3 Copyright (C) 2001, 2004-2006, 2009-2013 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+.
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 /* Written by Paul Eggert. */
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19
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20 #include <config.h>
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21
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22 #include "unistd-safer.h"
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23
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24 #include <fcntl.h>
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25 #include <unistd.h>
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26
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27 /* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or
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28 STDERR_FILENO. */
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29
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30 int
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31 dup_safer (int fd)
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32 {
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33 return fcntl (fd, F_DUPFD, STDERR_FILENO + 1);
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34 }