1 /******************************************************************************/
2 /* */
3 /* Copyright (c) Ulrich Drepper <drepper@redhat.com> */
4 /* Copyright (c) International Business Machines Corp., 2009 */
5 /* */
6 /* This program is free software; you can redistribute it and/or modify */
7 /* it under the terms of the GNU General Public License as published by */
8 /* the Free Software Foundation; either version 2 of the License, or */
9 /* (at your option) any later version. */
10 /* */
11 /* This program is distributed in the hope that it will be useful, */
12 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
13 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
14 /* the GNU General Public License for more details. */
15 /* */
16 /* You should have received a copy of the GNU General Public License */
17 /* along with this program; if not, write to the Free Software */
18 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
19 /* */
20 /******************************************************************************/
21 /******************************************************************************/
22 /* */
23 /* File: pipe2_02.c */
24 /* */
25 /* Description: This Program tests the new system call introduced in 2.6.27. */
26 /* Ulrich´s comment as in: */
27 /* http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=be61a86d7237dd80510615f38ae21d6e1e98660c */
28 /* which says: */
29 /* This patch adds O_NONBLOCK support to pipe2. It is minimally more involved*/
30 /* than the patches for eventfd et.al but still trivial. The interfaces of */
31 /* the create_write_pipe and create_read_pipe helper functions were changed */
32 /* and the one other caller as well. */
33 /* The following test must be adjusted for architectures other than x86 and */
34 /* x86-64 and in case the syscall numbers changed. */
35 /* */
36 /* Usage: <for command-line> */
37 /* pipe2_02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
38 /* where, -c n : Run n copies concurrently. */
39 /* -e : Turn on errno logging. */
40 /* -i n : Execute test n times. */
41 /* -I x : Execute test for x seconds. */
42 /* -P x : Pause for x seconds between iterations. */
43 /* -t : Turn on syscall timing. */
44 /* */
45 /* Total Tests: 1 */
46 /* */
47 /* Test Name: pipe2_02 */
48 /* */
49 /* Author: Ulrich Drepper <drepper@redhat.com> */
50 /* */
51 /* History: Created - Jan 13 2009 - Ulrich Drepper <drepper@redhat.com> */
52 /* Ported to LTP */
53 /* - Jan 13 2009 - Subrata <subrata@linux.vnet.ibm.com> */
54 /******************************************************************************/
55 #include <fcntl.h>
56 #include <stdio.h>
57 #include <unistd.h>
58 #include <sys/syscall.h>
59 #include <errno.h>
60
61 #include "test.h"
62 #include "lapi/fcntl.h"
63 #include "lapi/syscalls.h"
64
65 char *TCID = "pipe2_02";
66 int testno;
67 int TST_TOTAL = 1;
68
69 /* Extern Global Functions */
70 /******************************************************************************/
71 /* */
72 /* Function: cleanup */
73 /* */
74 /* Description: Performs all one time clean up for this test on successful */
75 /* completion, premature exit or failure. Closes all temporary */
76 /* files, removes all temporary directories exits the test with */
77 /* appropriate return code by calling tst_exit() function. */
78 /* */
79 /* Input: None. */
80 /* */
81 /* Output: None. */
82 /* */
83 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */
84 /* On success - Exits calling tst_exit(). With '0' return code. */
85 /* */
86 /******************************************************************************/
cleanup(void)87 void cleanup(void)
88 {
89
90 tst_rmdir();
91
92 }
93
94 /* Local Functions */
95 /******************************************************************************/
96 /* */
97 /* Function: setup */
98 /* */
99 /* Description: Performs all one time setup for this test. This function is */
100 /* typically used to capture signals, create temporary dirs */
101 /* and temporary files that may be used in the course of this */
102 /* test. */
103 /* */
104 /* Input: None. */
105 /* */
106 /* Output: None. */
107 /* */
108 /* Return: On failure - Exits by calling cleanup(). */
109 /* On success - returns 0. */
110 /* */
111 /******************************************************************************/
setup(void)112 void setup(void)
113 {
114 /* Capture signals if any */
115 /* Create temporary directories */
116 TEST_PAUSE;
117 tst_tmpdir();
118 }
119
main(int argc,char * argv[])120 int main(int argc, char *argv[])
121 {
122 int fds[2], fl, i;
123 int lc;
124
125 tst_parse_opts(argc, argv, NULL, NULL);
126 if ((tst_kvercmp(2, 6, 27)) < 0) {
127 tst_brkm(TCONF,
128 NULL,
129 "This test can only run on kernels that are 2.6.27 and higher");
130 }
131 setup();
132
133 for (lc = 0; TEST_LOOPING(lc); ++lc) {
134 tst_count = 0;
135 for (testno = 0; testno < TST_TOTAL; ++testno) {
136 if (ltp_syscall(__NR_pipe2, fds, 0) == -1) {
137 tst_brkm(TFAIL, cleanup, "pipe2(0) failed");
138 }
139 for (i = 0; i < 2; ++i) {
140 fl = fcntl(fds[i], F_GETFL);
141 if (fl == -1) {
142 tst_brkm(TBROK, cleanup,
143 "fcntl failed");
144 }
145 if (fl & O_NONBLOCK) {
146 tst_brkm(TFAIL,
147 cleanup, "pipe2(0) set non-blocking mode for fds[%d]",
148 i);
149 }
150 close(fds[i]);
151 }
152
153 if (ltp_syscall(__NR_pipe2, fds, O_NONBLOCK) == -1) {
154 tst_brkm(TFAIL, cleanup,
155 "pipe2(O_NONBLOCK) failed");
156 }
157 for (i = 0; i < 2; ++i) {
158 fl = fcntl(fds[i], F_GETFL);
159 if (fl == -1) {
160 tst_brkm(TBROK, cleanup,
161 "fcntl failed");
162 }
163 if ((fl & O_NONBLOCK) == 0) {
164 tst_brkm(TFAIL,
165 cleanup, "pipe2(O_NONBLOCK) does not set non-blocking mode for fds[%d]\n",
166 i);
167 }
168 close(fds[i]);
169 }
170 tst_resm(TPASS, "pipe2(O_NONBLOCK) PASSED");
171 cleanup();
172 }
173 }
174 tst_exit();
175 }
176