1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* Tests for ftruncate and truncate.
Copyright (C) 2000-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <error.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
/* Allow testing of the 64-bit versions as well. */
#ifndef TRUNCATE
# define TRUNCATE truncate
# define FTRUNCATE ftruncate
#endif
#define STRINGIFY(s) STRINGIFY2 (s)
#define STRINGIFY2(s) #s
/* Prototype for our test function. */
extern void do_prepare (int argc, char *argv[]);
extern int do_test (int argc, char *argv[]);
/* We have a preparation function. */
#define PREPARE do_prepare
/* We might need a bit longer timeout. */
#define TIMEOUT 20 /* sec */
/* This defines the `main' function and some more. */
#include <test-skeleton.c>
/* These are for the temporary file we generate. */
char *name;
int fd;
void
do_prepare (int argc, char *argv[])
{
size_t name_len;
#define FNAME FNAME2(TRUNCATE)
#define FNAME2(s) "/" STRINGIFY(s) "XXXXXX"
name_len = strlen (test_dir);
name = malloc (name_len + sizeof (FNAME));
mempcpy (mempcpy (name, test_dir, name_len), FNAME, sizeof (FNAME));
add_temp_file (name);
/* Open our test file. */
fd = mkstemp (name);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
}
int
do_test (int argc, char *argv[])
{
struct stat st;
char buf[1000];
memset (buf, '\0', sizeof (buf));
if (write (fd, buf, sizeof (buf)) != sizeof (buf))
error (EXIT_FAILURE, errno, "during write");
if (fstat (fd, &st) < 0 || st.st_size != sizeof (buf))
error (EXIT_FAILURE, 0, "initial size wrong");
if (FTRUNCATE (fd, 800) < 0)
error (EXIT_FAILURE, errno, "size reduction with %s failed",
STRINGIFY (FTRUNCATE));
if (fstat (fd, &st) < 0 || st.st_size != 800)
error (EXIT_FAILURE, 0, "size after reduction with %s incorrect",
STRINGIFY (FTRUNCATE));
/* The following test covers more than POSIX. POSIX does not require
that ftruncate() can increase the file size. But we are testing
Unix systems. */
if (FTRUNCATE (fd, 1200) < 0)
error (EXIT_FAILURE, errno, "size increase with %s failed",
STRINGIFY (FTRUNCATE));
if (fstat (fd, &st) < 0 || st.st_size != 1200)
error (EXIT_FAILURE, 0, "size after increase with %s incorrect",
STRINGIFY (FTRUNCATE));
if (TRUNCATE (name, 800) < 0)
error (EXIT_FAILURE, errno, "size reduction with %s failed",
STRINGIFY (TRUNCATE));
if (fstat (fd, &st) < 0 || st.st_size != 800)
error (EXIT_FAILURE, 0, "size after reduction with %s incorrect",
STRINGIFY (TRUNCATE));
/* The following test covers more than POSIX. POSIX does not require
that truncate() can increase the file size. But we are testing
Unix systems. */
if (TRUNCATE (name, 1200) < 0)
error (EXIT_FAILURE, errno, "size increase with %s failed",
STRINGIFY (TRUNCATE));
if (fstat (fd, &st) < 0 || st.st_size != 1200)
error (EXIT_FAILURE, 0, "size after increase with %s incorrect",
STRINGIFY (TRUNCATE));
close (fd);
unlink (name);
return 0;
}
|
