1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2014 Fujitsu Ltd.
4 * Author: Xing Gu <gux.fnst@cn.fujitsu.com>
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 <fcntl.h>
22 #include <unistd.h>
23 #include <fcntl.h>
24 #include <sys/uio.h>
25 #include <limits.h>
26
27 #include "tst_test.h"
28 #include "lapi/syscalls.h"
29 #include "lapi/fcntl.h"
30 #include "lapi/vmsplice.h"
31
32 #define TESTFILE "testfile"
33
34 #define TEST_BLOCK_SIZE 128
35
36 static char buffer[TEST_BLOCK_SIZE];
37 static int notvalidfd = -1;
38 static int filefd;
39 static int pipes[2];
40 static struct iovec ivc;
41
42 static struct tcase {
43 int *fd;
44 const struct iovec *iov;
45 unsigned long nr_segs;
46 int exp_errno;
47 } tcases[] = {
48 { ¬validfd, &ivc, 1, EBADF },
49 { &filefd, &ivc, 1, EBADF },
50 { &pipes[1], &ivc, IOV_MAX + 1, EINVAL },
51 };
52
setup(void)53 static void setup(void)
54 {
55 if (tst_fs_type(".") == TST_NFS_MAGIC) {
56 tst_brk(TCONF, "Cannot do splice() "
57 "on a file located on an NFS filesystem");
58 }
59
60 filefd = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, 0644);
61
62 SAFE_PIPE(pipes);
63
64 ivc.iov_base = buffer;
65 ivc.iov_len = TEST_BLOCK_SIZE;
66 }
67
vmsplice_verify(unsigned int n)68 static void vmsplice_verify(unsigned int n)
69 {
70 struct tcase *tc = &tcases[n];
71
72 TEST(vmsplice(*(tc->fd), tc->iov, tc->nr_segs, 0));
73
74 if (TST_RET != -1) {
75 tst_res(TFAIL, "vmsplice() returned %ld, "
76 "expected -1, errno:%d", TST_RET,
77 tc->exp_errno);
78 return;
79 }
80
81 if (TST_ERR != tc->exp_errno) {
82 tst_res(TFAIL | TTERRNO,
83 "vmsplice() failed unexpectedly; expected: %d - %s",
84 tc->exp_errno, tst_strerrno(tc->exp_errno));
85 return;
86 }
87
88 tst_res(TPASS | TTERRNO, "vmsplice() failed as expected");
89 }
90
cleanup(void)91 static void cleanup(void)
92 {
93 if (filefd > 0)
94 SAFE_CLOSE(filefd);
95
96 if (pipes[0] > 0)
97 SAFE_CLOSE(pipes[0]);
98
99 if (pipes[1] > 0)
100 SAFE_CLOSE(pipes[1]);
101 }
102
103 static struct tst_test test = {
104 .setup = setup,
105 .cleanup = cleanup,
106 .test = vmsplice_verify,
107 .tcnt = ARRAY_SIZE(tcases),
108 .needs_tmpdir = 1,
109 .min_kver = "2.6.17",
110 };
111