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annotate lib/open-safer.c @ 40186:8964917f9574

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author Karl Berry <karl@freefriends.org>
date Mon, 18 Feb 2019 08:02:49 -0800
parents b06060465f09
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Invoke open, but avoid some glitches.
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2
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3 Copyright (C) 2005-2006, 2008-2019 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
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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 <https://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 "fcntl-safer.h"
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23
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24 #include <fcntl.h>
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25 #include <stdarg.h>
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26 #include "unistd-safer.h"
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27
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28 int
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29 open_safer (char const *file, int flags, ...)
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30 {
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31 mode_t mode = 0;
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32
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33 if (flags & O_CREAT)
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34 {
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35 va_list ap;
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36 va_start (ap, flags);
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37
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38 /* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
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39 creates crashing code when 'mode_t' is smaller than 'int'. */
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40 mode = va_arg (ap, PROMOTED_MODE_T);
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41
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42 va_end (ap);
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43 }
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44
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45 return fd_safer (open (file, flags, mode));
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46 }