1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2014 Fujitsu Ltd.
4 * Author: Xing Gu <[email protected]>
5 */
6 /*
7 * Description:
8 * Verify that,
9 * 1) vmsplice() returns -1 and sets errno to EBADF if fd
10 * is not valid.
11 * 2) vmsplice() returns -1 and sets errno to EBADF if fd
12 * doesn't refer to a pipe.
13 * 3) vmsplice() returns -1 and sets errno to EINVAL if
14 * nr_segs is greater than IOV_MAX.
15 */
16
17 #define _GNU_SOURCE
18
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <unistd.h>
22 #include <sys/uio.h>
23 #include <limits.h>
24
25 #include "tst_test.h"
26 #include "lapi/syscalls.h"
27 #include "lapi/fcntl.h"
28 #include "lapi/vmsplice.h"
29
30 #define TESTFILE "testfile"
31
32 #define TEST_BLOCK_SIZE 128
33
34 static char buffer[TEST_BLOCK_SIZE];
35 static int notvalidfd = -1;
36 static int filefd;
37 static int pipes[2];
38 static struct iovec ivc;
39
40 static struct tcase {
41 int *fd;
42 const struct iovec *iov;
43 unsigned long nr_segs;
44 int exp_errno;
45 } tcases[] = {
46 { ¬validfd, &ivc, 1, EBADF },
47 { &filefd, &ivc, 1, EBADF },
48 { &pipes[1], &ivc, IOV_MAX + 1, EINVAL },
49 };
50
setup(void)51 static void setup(void)
52 {
53 filefd = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, 0644);
54
55 SAFE_PIPE(pipes);
56
57 ivc.iov_base = buffer;
58 ivc.iov_len = TEST_BLOCK_SIZE;
59 }
60
vmsplice_verify(unsigned int n)61 static void vmsplice_verify(unsigned int n)
62 {
63 struct tcase *tc = &tcases[n];
64
65 TEST(vmsplice(*(tc->fd), tc->iov, tc->nr_segs, 0));
66
67 if (TST_RET != -1) {
68 tst_res(TFAIL, "vmsplice() returned %ld, "
69 "expected -1, errno:%d", TST_RET,
70 tc->exp_errno);
71 return;
72 }
73
74 if (TST_ERR != tc->exp_errno) {
75 tst_res(TFAIL | TTERRNO,
76 "vmsplice() failed unexpectedly; expected: %d - %s",
77 tc->exp_errno, tst_strerrno(tc->exp_errno));
78 return;
79 }
80
81 tst_res(TPASS | TTERRNO, "vmsplice() failed as expected");
82 }
83
cleanup(void)84 static void cleanup(void)
85 {
86 if (filefd > 0)
87 SAFE_CLOSE(filefd);
88
89 if (pipes[0] > 0)
90 SAFE_CLOSE(pipes[0]);
91
92 if (pipes[1] > 0)
93 SAFE_CLOSE(pipes[1]);
94 }
95
96 static struct tst_test test = {
97 .setup = setup,
98 .cleanup = cleanup,
99 .test = vmsplice_verify,
100 .tcnt = ARRAY_SIZE(tcases),
101 .needs_tmpdir = 1,
102 .skip_filesystems = (const char *const []) {
103 "nfs",
104 NULL
105 },
106 };
107