1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2015-2016 Fujitsu Ltd.
4 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
5 */
6
7 /*
8 * Test Name: pwritev02
9 *
10 * Description:
11 * 1) pwritev(2) fails if iov_len is invalid.
12 * 2) pwritev(2) fails if the vector count iovcnt is less than zero.
13 * 3) pwritev(2) fails if offset is negative.
14 * 4) pwritev(2) fails when attempts to write from a invalid address
15 * 5) pwritev(2) fails if file descriptor is invalid.
16 * 6) pwritev(2) fails if file descriptor is not open for writing.
17 * 7) pwritev(2) fails if fd is associated with a pipe.
18 *
19 * Expected Result:
20 * 1) pwritev(2) should return -1 and set errno to EINVAL.
21 * 2) pwritev(2) should return -1 and set errno to EINVAL.
22 * 3) pwritev(2) should return -1 and set errno to EINVAL.
23 * 4) pwritev(2) should return -1 and set errno to EFAULT.
24 * 5) pwritev(2) should return -1 and set errno to EBADF.
25 * 6) pwritev(2) should return -1 and set errno to EBADF.
26 * 7) pwritev(2) should return -1 and set errno to ESPIPE.
27 */
28
29 #define _GNU_SOURCE
30
31 #include <sys/uio.h>
32 #include <unistd.h>
33 #include "tst_test.h"
34 #include "pwritev.h"
35
36 #define CHUNK 64
37
38 static int fd1;
39 static int fd2;
40 static int fd3 = -1;
41 static int fd4[2];
42
43 static char buf[CHUNK];
44
45 static struct iovec wr_iovec1[] = {
46 {buf, -1},
47 };
48
49 static struct iovec wr_iovec2[] = {
50 {buf, CHUNK},
51 };
52
53 static struct iovec wr_iovec3[] = {
54 {(char *)-1, CHUNK},
55 };
56
57 static struct tcase {
58 int *fd;
59 struct iovec *name;
60 int count;
61 off_t offset;
62 int exp_err;
63 } tcases[] = {
64 {&fd1, wr_iovec1, 1, 0, EINVAL},
65 {&fd1, wr_iovec2, -1, 0, EINVAL},
66 {&fd1, wr_iovec2, 1, -1, EINVAL},
67 {&fd1, wr_iovec3, 1, 0, EFAULT},
68 {&fd3, wr_iovec2, 1, 0, EBADF},
69 {&fd2, wr_iovec2, 1, 0, EBADF},
70 {&fd4[1], wr_iovec2, 1, 0, ESPIPE}
71 };
72
verify_pwritev(unsigned int n)73 static void verify_pwritev(unsigned int n)
74 {
75 struct tcase *tc = &tcases[n];
76
77 TEST(pwritev(*tc->fd, tc->name, tc->count, tc->offset));
78 if (TST_RET == 0) {
79 tst_res(TFAIL, "pwritev() succeeded unexpectedly");
80 return;
81 }
82
83 if (TST_ERR == tc->exp_err) {
84 tst_res(TPASS | TTERRNO, "pwritev() failed as expected");
85 return;
86 }
87
88 tst_res(TFAIL | TTERRNO, "pwritev() failed unexpectedly, expected %s",
89 tst_strerrno(tc->exp_err));
90 }
91
setup(void)92 static void setup(void)
93 {
94 fd1 = SAFE_OPEN("file", O_RDWR | O_CREAT, 0644);
95 SAFE_FTRUNCATE(fd1, getpagesize());
96 fd2 = SAFE_OPEN("file", O_RDONLY | O_CREAT, 0644);
97 SAFE_PIPE(fd4);
98 }
99
cleanup(void)100 static void cleanup(void)
101 {
102 if (fd1 > 0)
103 SAFE_CLOSE(fd1);
104
105 if (fd2 > 0)
106 SAFE_CLOSE(fd2);
107
108 if (fd4[0] > 0)
109 SAFE_CLOSE(fd4[0]);
110
111 if (fd4[1] > 0)
112 SAFE_CLOSE(fd4[1]);
113 }
114
115 static struct tst_test test = {
116 .tcnt = ARRAY_SIZE(tcases),
117 .setup = setup,
118 .cleanup = cleanup,
119 .test = verify_pwritev,
120 .min_kver = "2.6.30",
121 .needs_tmpdir = 1,
122 };
123