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52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* Invoke open, but avoid some glitches.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Paul Eggert. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "fcntl-safer.h"
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#include <fcntl.h>
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#include <stdarg.h>
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#include "unistd-safer.h"
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int
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open_safer (char const *file, int flags, ...)
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{
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mode_t mode = 0;
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if (flags & O_CREAT)
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{
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va_list ap;
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va_start (ap, flags);
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/* Assume mode_t promotes to int if and only if it is smaller.
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This assumption isn't guaranteed by the C standard, but we
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don't know of any real-world counterexamples. */
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mode = (sizeof (mode_t) < sizeof (int)
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? va_arg (ap, int)
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: va_arg (ap, mode_t));
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va_end (ap);
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}
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return fd_safer (open (file, flags, mode));
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}
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