File: | src/lib/libc/stdio/fclose.c |
Warning: | line 55, column 6 Dereference of null pointer |
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1 | /* $OpenBSD: fclose.c,v 1.10 2015/08/31 02:53:57 guenther Exp $ */ | |||
2 | /*- | |||
3 | * Copyright (c) 1990, 1993 | |||
4 | * The Regents of the University of California. All rights reserved. | |||
5 | * | |||
6 | * This code is derived from software contributed to Berkeley by | |||
7 | * Chris Torek. | |||
8 | * | |||
9 | * Redistribution and use in source and binary forms, with or without | |||
10 | * modification, are permitted provided that the following conditions | |||
11 | * are met: | |||
12 | * 1. Redistributions of source code must retain the above copyright | |||
13 | * notice, this list of conditions and the following disclaimer. | |||
14 | * 2. Redistributions in binary form must reproduce the above copyright | |||
15 | * notice, this list of conditions and the following disclaimer in the | |||
16 | * documentation and/or other materials provided with the distribution. | |||
17 | * 3. Neither the name of the University nor the names of its contributors | |||
18 | * may be used to endorse or promote products derived from this software | |||
19 | * without specific prior written permission. | |||
20 | * | |||
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||
31 | * SUCH DAMAGE. | |||
32 | */ | |||
33 | ||||
34 | #include <errno(*__errno()).h> | |||
35 | #include <stdio.h> | |||
36 | #include <stdlib.h> | |||
37 | #include "local.h" | |||
38 | ||||
39 | int | |||
40 | fclose(FILE *fp) | |||
41 | { | |||
42 | int r; | |||
43 | ||||
44 | if (fp->_flags == 0) { /* not open! */ | |||
| ||||
45 | errno(*__errno()) = EBADF9; | |||
46 | return (EOF(-1)); | |||
47 | } | |||
48 | FLOCKFILE(fp)do { if (_thread_cb.tc_flockfile != ((void *)0)) _thread_cb.tc_flockfile (fp); } while (0); | |||
49 | WCIO_FREE(fp)do { struct wchar_io_data *_wcio = (((struct __sfileext *)((fp )->_ext._base)) ? &(((struct __sfileext *)((fp)->_ext ._base))->_wcio) : (struct wchar_io_data *)0); if (_wcio) { _wcio->wcio_mode = 0; _wcio->wcio_ungetwc_inbuf = 0; } } while (0); | |||
50 | r = fp->_flags & __SWR0x0008 ? __sflush(fp) : 0; | |||
51 | if (fp->_close != NULL((void *)0) && (*fp->_close)(fp->_cookie) < 0) | |||
52 | r = EOF(-1); | |||
53 | if (fp->_flags & __SMBF0x0080) | |||
54 | free((char *)fp->_bf._base); | |||
55 | if (HASUB(fp)(((struct __sfileext *)((fp)->_ext._base))->_ub._base != ((void *)0))) | |||
| ||||
56 | FREEUB(fp){ if (((struct __sfileext *)((fp)->_ext._base))->_ub._base != (fp)->_ubuf) free(((struct __sfileext *)((fp)->_ext ._base))->_ub._base); ((struct __sfileext *)((fp)->_ext ._base))->_ub._base = ((void *)0); }; | |||
57 | if (HASLB(fp)((fp)->_lb._base != ((void *)0))) | |||
58 | FREELB(fp){ free((char *)(fp)->_lb._base); (fp)->_lb._base = ((void *)0); }; | |||
59 | fp->_r = fp->_w = 0; /* Mess up if reaccessed. */ | |||
60 | fp->_flags = 0; /* Release this FILE for reuse. */ | |||
61 | FUNLOCKFILE(fp)do { if (_thread_cb.tc_funlockfile != ((void *)0)) _thread_cb .tc_funlockfile(fp); } while (0); | |||
62 | return (r); | |||
63 | } | |||
64 | DEF_STRONG(fclose)__asm__(".global " "fclose" " ; " "fclose" " = " "_libc_fclose" ); |