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 #include "limits_ltp.h"
44
45 #define TESTFILE "testfile"
46
47 #define TEST_BLOCK_SIZE 128
48
49 static char buffer[TEST_BLOCK_SIZE];
50 static int notvalidfd = -1;
51 static int filefd;
52 static int pipes[2];
53 static struct iovec ivc;
54
55 static struct tcase {
56 int *fd;
57 const struct iovec *iov;
58 unsigned long nr_segs;
59 int exp_errno;
60 } tcases[] = {
61 { ¬validfd, &ivc, 1, EBADF },
62 { &filefd, &ivc, 1, EBADF },
63 { &pipes[1], &ivc, IOV_MAX + 1, EINVAL },
64 };
65
setup(void)66 static void setup(void)
67 {
68 if (tst_fs_type(".") == TST_NFS_MAGIC) {
69 tst_brk(TCONF, "Cannot do splice() "
70 "on a file located on an NFS filesystem");
71 }
72
73 filefd = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, 0644);
74
75 SAFE_PIPE(pipes);
76
77 ivc.iov_base = buffer;
78 ivc.iov_len = TEST_BLOCK_SIZE;
79 }
80
vmsplice_verify(unsigned int n)81 static void vmsplice_verify(unsigned int n)
82 {
83 struct tcase *tc = &tcases[n];
84
85 TEST(vmsplice(*(tc->fd), tc->iov, tc->nr_segs, 0));
86
87 if (TEST_RETURN != -1) {
88 tst_res(TFAIL, "vmsplice() returned %ld, "
89 "expected -1, errno:%d", TEST_RETURN,
90 tc->exp_errno);
91 return;
92 }
93
94 if (TEST_ERRNO != tc->exp_errno) {
95 tst_res(TFAIL | TTERRNO,
96 "vmsplice() failed unexpectedly; expected: %d - %s",
97 tc->exp_errno, tst_strerrno(tc->exp_errno));
98 return;
99 }
100
101 tst_res(TPASS | TTERRNO, "vmsplice() failed as expected");
102 }
103
cleanup(void)104 static void cleanup(void)
105 {
106 if (filefd > 0)
107 SAFE_CLOSE(filefd);
108
109 if (pipes[0] > 0)
110 SAFE_CLOSE(pipes[0]);
111
112 if (pipes[1] > 0)
113 SAFE_CLOSE(pipes[1]);
114 }
115
116 static struct tst_test test = {
117 .setup = setup,
118 .cleanup = cleanup,
119 .test = vmsplice_verify,
120 .tcnt = ARRAY_SIZE(tcases),
121 .needs_tmpdir = 1,
122 .min_kver = "2.6.17",
123 };
124