1 /*
2 * Copyright (c) 2013 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would 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, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #define _GNU_SOURCE
20 #include <stdarg.h>
21 #include <stdio.h>
22 #include <errno.h>
23 #include "test.h"
24 #include "safe_stdio_fn.h"
25
safe_fopen(const char * file,const int lineno,void (cleanup_fn)(void),const char * path,const char * mode)26 FILE *safe_fopen(const char *file, const int lineno, void (cleanup_fn)(void),
27 const char *path, const char *mode)
28 {
29 FILE *f = fopen(path, mode);
30
31 if (f == NULL) {
32 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
33 "fopen(%s,%s) failed", path, mode);
34 }
35
36 return f;
37 }
38
safe_fclose(const char * file,const int lineno,void (cleanup_fn)(void),FILE * f)39 int safe_fclose(const char *file, const int lineno, void (cleanup_fn)(void),
40 FILE *f)
41 {
42 int ret;
43
44 ret = fclose(f);
45
46 if (ret == EOF) {
47 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
48 "fclose(%p) failed", f);
49 } else if (ret) {
50 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
51 "Invalid fclose(%p) return value %d", f, ret);
52 }
53
54 return ret;
55 }
56
safe_asprintf(const char * file,const int lineno,void (cleanup_fn)(void),char ** strp,const char * fmt,...)57 int safe_asprintf(const char *file, const int lineno, void (cleanup_fn)(void),
58 char **strp, const char *fmt, ...)
59 {
60 int ret;
61 va_list va;
62
63 va_start(va, fmt);
64 ret = vasprintf(strp, fmt, va);
65 va_end(va);
66
67 if (ret == -1) {
68 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
69 "asprintf(%s,...) failed", fmt);
70 } else if (ret < 0) {
71 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
72 "Invalid asprintf(%s,...) return value %d", fmt, ret);
73 }
74
75 return ret;
76 }
77
safe_popen(const char * file,const int lineno,void (cleanup_fn)(void),const char * command,const char * type)78 FILE *safe_popen(const char *file, const int lineno, void (cleanup_fn)(void),
79 const char *command, const char *type)
80 {
81 FILE *stream;
82 const int saved_errno = errno;
83
84 errno = 0;
85 stream = popen(command, type);
86
87 if (stream == NULL) {
88 if (errno != 0) {
89 tst_brkm_(file, lineno, TBROK | TERRNO, cleanup_fn,
90 "popen(%s,%s) failed", command, type);
91 } else {
92 tst_brkm_(file, lineno, TBROK, cleanup_fn,
93 "popen(%s,%s) failed: Out of memory",
94 command, type);
95 }
96 }
97
98 errno = saved_errno;
99
100 return stream;
101 }
102