1 /*
2 * Copyright (c) 2014 Fujitsu Ltd.
3 * Author: Xing Gu <gux.fnst@cn.fujitsu.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17 /*
18 * Description:
19 * Verify that,
20 * 1) vmsplice() returns -1 and sets errno to EBADF if fd
21 * is not valid.
22 * 2) vmsplice() returns -1 and sets errno to EBADF if fd
23 * doesn't refer to a pipe.
24 * 3) vmsplice() returns -1 and sets errno to EINVAL if
25 * nr_segs is greater than IOV_MAX.
26 */
27
28 #define _GNU_SOURCE
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <fcntl.h>
33 #include <unistd.h>
34 #include <fcntl.h>
35 #include <sys/uio.h>
36 #include <limits.h>
37
38 #include "tst_test.h"
39 #include "lapi/syscalls.h"
40 #include "lapi/fcntl.h"
41 #include "lapi/vmsplice.h"
42
43 #define TESTFILE "testfile"
44
45 #define TEST_BLOCK_SIZE 128
46
47 static char buffer[TEST_BLOCK_SIZE];
48 static int notvalidfd = -1;
49 static int filefd;
50 static int pipes[2];
51 static struct iovec ivc;
52
53 static struct tcase {
54 int *fd;
55 const struct iovec *iov;
56 unsigned long nr_segs;
57 int exp_errno;
58 } tcases[] = {
59 { ¬validfd, &ivc, 1, EBADF },
60 { &filefd, &ivc, 1, EBADF },
61 { &pipes[1], &ivc, IOV_MAX + 1, EINVAL },
62 };
63
setup(void)64 static void setup(void)
65 {
66 if (tst_fs_type(".") == TST_NFS_MAGIC) {
67 tst_brk(TCONF, "Cannot do splice() "
68 "on a file located on an NFS filesystem");
69 }
70
71 filefd = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, 0644);
72
73 SAFE_PIPE(pipes);
74
75 ivc.iov_base = buffer;
76 ivc.iov_len = TEST_BLOCK_SIZE;
77 }
78
vmsplice_verify(unsigned int n)79 static void vmsplice_verify(unsigned int n)
80 {
81 struct tcase *tc = &tcases[n];
82
83 TEST(vmsplice(*(tc->fd), tc->iov, tc->nr_segs, 0));
84
85 if (TST_RET != -1) {
86 tst_res(TFAIL, "vmsplice() returned %ld, "
87 "expected -1, errno:%d", TST_RET,
88 tc->exp_errno);
89 return;
90 }
91
92 if (TST_ERR != tc->exp_errno) {
93 tst_res(TFAIL | TTERRNO,
94 "vmsplice() failed unexpectedly; expected: %d - %s",
95 tc->exp_errno, tst_strerrno(tc->exp_errno));
96 return;
97 }
98
99 tst_res(TPASS | TTERRNO, "vmsplice() failed as expected");
100 }
101
cleanup(void)102 static void cleanup(void)
103 {
104 if (filefd > 0)
105 SAFE_CLOSE(filefd);
106
107 if (pipes[0] > 0)
108 SAFE_CLOSE(pipes[0]);
109
110 if (pipes[1] > 0)
111 SAFE_CLOSE(pipes[1]);
112 }
113
114 static struct tst_test test = {
115 .setup = setup,
116 .cleanup = cleanup,
117 .test = vmsplice_verify,
118 .tcnt = ARRAY_SIZE(tcases),
119 .needs_tmpdir = 1,
120 .min_kver = "2.6.17",
121 };
122