1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2018 FUJITSU LIMITED. All rights reserved.
4 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
5 */
6
7 /*
8 * Description:
9 * Check various errnos for preadv2(2).
10 * 1) preadv2() fails and sets errno to EINVAL if iov_len is invalid.
11 * 2) preadv2() fails and sets errno to EINVAL if the vector count iovcnt
12 * is less than zero.
13 * 3) preadv2() fails and sets errno to EOPNOTSUPP if flag is invalid.
14 * 4) preadv2() fails and sets errno to EFAULT when attempts to read into
15 * a invalid address.
16 * 5) preadv2() fails and sets errno to EBADF if file descriptor is invalid.
17 * 6) preadv2() fails and sets errno to EBADF if file descriptor is not
18 * open for reading.
19 * 7) preadv2() fails and sets errno to EISDIR when fd refers to a directory.
20 * 8) preadv2() fails and sets errno to ESPIPE if fd is associated with a pipe.
21 */
22
23 #define _GNU_SOURCE
24 #include <sys/uio.h>
25 #include <unistd.h>
26
27 #include "tst_test.h"
28 #include "lapi/preadv2.h"
29
30 #define CHUNK 64
31
32 static int fd1;
33 static int fd2;
34 static int fd3 = -1;
35 static int fd4;
36 static int fd5[2];
37
38 static char buf[CHUNK];
39
40 static struct iovec rd_iovec1[] = {
41 {buf, -1},
42 };
43
44 static struct iovec rd_iovec2[] = {
45 {buf, CHUNK},
46 };
47
48 static struct iovec rd_iovec3[] = {
49 {NULL, CHUNK},
50 };
51
52 static struct tcase {
53 int *fd;
54 struct iovec *name;
55 int count;
56 off_t offset;
57 int flag;
58 int exp_err;
59 } tcases[] = {
60 {&fd1, rd_iovec1, 1, 0, 0, EINVAL},
61 {&fd1, rd_iovec2, -1, 0, 0, EINVAL},
62 {&fd1, rd_iovec2, 1, 1, -1, EOPNOTSUPP},
63 {&fd1, rd_iovec3, 1, 0, 0, EFAULT},
64 {&fd3, rd_iovec2, 1, 0, 0, EBADF},
65 {&fd2, rd_iovec2, 1, 0, 0, EBADF},
66 {&fd4, rd_iovec2, 1, 0, 0, EISDIR},
67 {&fd5[0], rd_iovec2, 1, 0, 0, ESPIPE},
68 };
69
verify_preadv2(unsigned int n)70 static void verify_preadv2(unsigned int n)
71 {
72 struct tcase *tc = &tcases[n];
73
74 TEST(preadv2(*tc->fd, tc->name, tc->count, tc->offset, tc->flag));
75
76 if (TST_RET == 0) {
77 tst_res(TFAIL, "preadv2() succeeded unexpectedly");
78 return;
79 }
80
81 if (TST_ERR == tc->exp_err) {
82 tst_res(TPASS | TTERRNO, "preadv2() failed as expected");
83 return;
84 }
85
86 tst_res(TFAIL | TTERRNO, "preadv2() failed unexpectedly, expected %s",
87 tst_strerrno(tc->exp_err));
88 }
89
setup(void)90 static void setup(void)
91 {
92 fd1 = SAFE_OPEN("file1", O_RDWR | O_CREAT, 0644);
93 SAFE_FTRUNCATE(fd1, getpagesize());
94 fd2 = SAFE_OPEN("file2", O_WRONLY | O_CREAT, 0644);
95 fd4 = SAFE_OPEN(".", O_RDONLY);
96 SAFE_PIPE(fd5);
97
98 rd_iovec3[0].iov_base = tst_get_bad_addr(NULL);
99 }
100
cleanup(void)101 static void cleanup(void)
102 {
103 if (fd1 > 0)
104 SAFE_CLOSE(fd1);
105
106 if (fd2 > 0)
107 SAFE_CLOSE(fd2);
108
109 if (fd4 > 0)
110 SAFE_CLOSE(fd4);
111
112 if (fd5[0] > 0)
113 SAFE_CLOSE(fd5[0]);
114
115 if (fd5[1] > 0)
116 SAFE_CLOSE(fd5[1]);
117 }
118
119 static struct tst_test test = {
120 .tcnt = ARRAY_SIZE(tcases),
121 .setup = setup,
122 .cleanup = cleanup,
123 .test = verify_preadv2,
124 .needs_tmpdir = 1,
125 };
126