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comparison lib/fclose.c @ 10622:ac6f431cc95d

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New module 'fclose'.
author Bruno Haible <bruno@clisp.org>
date Sat, 11 Oct 2008 14:18:29 +0200
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children cce8e54214d5
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10621:ddf94077f7f2 10622:ac6f431cc95d
1 /* close replacement.
2 Copyright (C) 2008 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program 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
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 /* Specification. */
20 #include <stdio.h>
21
22 #include <errno.h>
23 #include <unistd.h>
24
25 /* Override fclose() to call the overridden close(). */
26
27 int
28 rpl_fclose (FILE *fp)
29 #undef fclose
30 {
31 int saved_errno = 0;
32
33 if (fflush (fp))
34 saved_errno = errno;
35
36 if (close (fileno (fp)) < 0 && saved_errno == 0)
37 saved_errno = errno;
38
39 fclose (fp); /* will fail with errno = EBADF */
40
41 if (saved_errno != 0)
42 {
43 errno = saved_errno;
44 return EOF;
45 }
46 return 0;
47 }