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
|
/* Tests for preadv and pwritev.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <sys/uio.h>
/* Allow testing of the 64-bit versions as well. */
#ifndef PREADV
# define PREADV preadv
# define PWRITEV pwritev
#endif
static void do_prepare (void);
static int do_test (void);
#define PREPARE(argc, argv) do_prepare ()
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static char *temp_filename;
static int temp_fd;
void
do_prepare (void)
{
temp_fd = create_temp_file ("tst-PREADVwritev.", &temp_filename);
if (temp_fd == -1)
{
printf ("cannot create temporary file: %m\n");
exit (1);
}
}
#define FAIL(str) \
do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
int
do_test (void)
{
struct iovec iov[2];
ssize_t ret;
char buf1[32];
char buf2[64];
memset (buf1, 0xf0, sizeof buf1);
memset (buf2, 0x0f, sizeof buf2);
memset (iov, 0, sizeof iov);
iov[0].iov_base = buf1;
iov[0].iov_len = sizeof buf1;
iov[1].iov_base = buf2;
iov[1].iov_len = sizeof buf2;
ret = PWRITEV (temp_fd, iov, 2, 0);
if (ret == -1)
FAIL ("first PWRITEV returned -1");
if (ret != (sizeof buf1 + sizeof buf2))
FAIL ("first PWRITEV returned an unexpected value");
ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2);
if (ret == -1)
FAIL ("second PWRITEV returned -1");
if (ret != (sizeof buf1 + sizeof buf2))
FAIL ("second PWRITEV returned an unexpected value");
char buf3[32];
char buf4[64];
memset (buf3, 0x0f, sizeof buf3);
memset (buf4, 0xf0, sizeof buf4);
iov[0].iov_base = buf3;
iov[0].iov_len = sizeof buf3;
iov[1].iov_base = buf4;
iov[1].iov_len = sizeof buf4;
ret = PREADV (temp_fd, iov, 2, 0);
if (ret == -1)
FAIL ("first PREADV returned -1");
if (ret != (sizeof buf3 + sizeof buf4))
FAIL ("first PREADV returned an unexpected value");
if (memcmp (buf1, buf3, sizeof buf1) != 0)
FAIL ("first buffer from first PREADV different than expected");
if (memcmp (buf2, buf4, sizeof buf2) != 0)
FAIL ("second buffer from first PREADV different than expected");
ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4);
if (ret == -1)
FAIL ("second PREADV returned -1");
if (ret != (sizeof buf3 + sizeof buf4))
FAIL ("second PREADV returned an unexpected value");
if (memcmp (buf1, buf3, sizeof buf1) != 0)
FAIL ("first buffer from second PREADV different than expected");
if (memcmp (buf2, buf4, sizeof buf2) != 0)
FAIL ("second buffer from second PREADV different than expected");
return 0;
}
|
