]>
Commit | Line | Data |
---|---|---|
81c64d40 | 1 | /* Test freopen with mmap stdio. |
04277e02 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
81c64d40 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2002. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
81c64d40 UD |
19 | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <unistd.h> | |
24 | ||
f1a67a2c AZ |
25 | #include <support/check.h> |
26 | #include <support/temp_file.h> | |
27 | ||
28 | static int fd; | |
29 | static char *name; | |
30 | ||
31 | static void | |
32 | do_prepare (int argc, char *argv[]) | |
33 | { | |
34 | fd = create_temp_file ("tst-freopen.", &name); | |
35 | TEST_VERIFY_EXIT (fd != -1); | |
36 | } | |
37 | ||
38 | #define PREPARE do_prepare | |
39 | ||
40 | /* Basic tests for freopen. */ | |
41 | static void | |
42 | do_test_basic (void) | |
81c64d40 | 43 | { |
81c64d40 UD |
44 | const char * const test = "Let's test freopen.\n"; |
45 | char temp[strlen (test) + 1]; | |
81c64d40 | 46 | |
f1a67a2c | 47 | FILE *f = fdopen (fd, "w"); |
81c64d40 | 48 | if (f == NULL) |
f1a67a2c | 49 | FAIL_EXIT1 ("fdopen: %m"); |
81c64d40 UD |
50 | |
51 | fputs (test, f); | |
52 | fclose (f); | |
53 | ||
54 | f = fopen (name, "r"); | |
55 | if (f == NULL) | |
f1a67a2c | 56 | FAIL_EXIT1 ("fopen: %m"); |
81c64d40 UD |
57 | |
58 | if (fread (temp, 1, strlen (test), f) != strlen (test)) | |
f1a67a2c | 59 | FAIL_EXIT1 ("fread: %m"); |
81c64d40 UD |
60 | temp [strlen (test)] = '\0'; |
61 | ||
62 | if (strcmp (test, temp)) | |
f1a67a2c AZ |
63 | FAIL_EXIT1 ("read different string than was written: (%s, %s)", |
64 | test, temp); | |
81c64d40 UD |
65 | |
66 | f = freopen (name, "r+", f); | |
67 | if (f == NULL) | |
f1a67a2c | 68 | FAIL_EXIT1 ("freopen: %m"); |
81c64d40 UD |
69 | |
70 | if (fseek (f, 0, SEEK_SET) != 0) | |
f1a67a2c | 71 | FAIL_EXIT1 ("fseek: %m"); |
81c64d40 UD |
72 | |
73 | if (fread (temp, 1, strlen (test), f) != strlen (test)) | |
f1a67a2c | 74 | FAIL_EXIT1 ("fread: %m"); |
81c64d40 UD |
75 | temp [strlen (test)] = '\0'; |
76 | ||
77 | if (strcmp (test, temp)) | |
f1a67a2c AZ |
78 | FAIL_EXIT1 ("read different string than was written: (%s, %s)", |
79 | test, temp); | |
81c64d40 UD |
80 | |
81 | fclose (f); | |
f1a67a2c AZ |
82 | } |
83 | ||
84 | /* Test for BZ#21398, where it tries to freopen stdio after the close | |
85 | of its file descriptor. */ | |
86 | static void | |
87 | do_test_bz21398 (void) | |
88 | { | |
89 | (void) close (STDIN_FILENO); | |
90 | ||
91 | FILE *f = freopen (name, "r", stdin); | |
92 | if (f == NULL) | |
93 | FAIL_EXIT1 ("freopen: %m"); | |
94 | ||
95 | TEST_VERIFY_EXIT (ferror (f) == 0); | |
96 | ||
97 | char buf[128]; | |
98 | char *ret = fgets (buf, sizeof (buf), stdin); | |
99 | TEST_VERIFY_EXIT (ret != NULL); | |
100 | TEST_VERIFY_EXIT (ferror (f) == 0); | |
101 | } | |
102 | ||
103 | static int | |
104 | do_test (void) | |
105 | { | |
106 | do_test_basic (); | |
107 | do_test_bz21398 (); | |
81c64d40 | 108 | |
f1a67a2c | 109 | return 0; |
81c64d40 | 110 | } |
29955b5d | 111 | |
f1a67a2c | 112 | #include <support/test-driver.c> |