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: eventfd2_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=e7d476dfdf0bcfed478a207aecfdc84f81efecaf */
28 /* which says: */
29 /* This patch adds support for the EFD_NONBLOCK flag to eventfd2. The */
30 /* additional changes needed are minimal. The following test must be adjusted */
31 /* or architectures other than x86 and x86-64 and in case the syscall numbers */
32 /* changed. */
33 /* */
34 /* Usage: <for command-line> */
35 /* eventfd2_02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
36 /* where, -c n : Run n copies concurrently. */
37 /* -e : Turn on errno logging. */
38 /* -i n : Execute test n times. */
39 /* -I x : Execute test for x seconds. */
40 /* -P x : Pause for x seconds between iterations. */
41 /* -t : Turn on syscall timing. */
42 /* */
43 /* Total Tests: 1 */
44 /* */
45 /* Test Name: eventfd2_02 */
46 /* */
47 /* Author: Ulrich Drepper <drepper@redhat.com> */
48 /* */
49 /* History: Created - Jan 13 2009 - Ulrich Drepper <drepper@redhat.com> */
50 /* Ported to LTP */
51 /* - Jan 13 2009 - Subrata <subrata@linux.vnet.ibm.com> */
52 /******************************************************************************/
53 #include <stdio.h>
54 #include <unistd.h>
55 #include <sys/syscall.h>
56 #include <errno.h>
57
58 #include "test.h"
59 #include "lapi/fcntl.h"
60 #include "lapi/syscalls.h"
61
62 #define EFD_NONBLOCK O_NONBLOCK
63
64 char *TCID = "eventfd2_02";
65 int testno;
66 int TST_TOTAL = 1;
67
cleanup(void)68 void cleanup(void)
69 {
70 tst_rmdir();
71 }
72
setup(void)73 void setup(void)
74 {
75 TEST_PAUSE;
76 tst_tmpdir();
77 }
78
main(int argc,char * argv[])79 int main(int argc, char *argv[])
80 {
81 int fd, fl;
82
83 tst_parse_opts(argc, argv, NULL, NULL);
84
85 if ((tst_kvercmp(2, 6, 27)) < 0) {
86 tst_brkm(TCONF, NULL,
87 "This test can only run on kernels that are 2.6.27 and higher");
88 }
89 setup();
90
91 tst_count = 0;
92 fd = ltp_syscall(__NR_eventfd2, 1, 0);
93 if (fd == -1) {
94 tst_brkm(TFAIL, cleanup, "eventfd2(0) failed");
95 }
96 fl = fcntl(fd, F_GETFL);
97 if (fl == -1) {
98 tst_brkm(TBROK, cleanup, "fcntl failed");
99 }
100 if (fl & O_NONBLOCK) {
101 tst_brkm(TFAIL, cleanup, "eventfd2(0) sets non-blocking mode");
102 }
103 close(fd);
104
105 fd = ltp_syscall(__NR_eventfd2, 1, EFD_NONBLOCK);
106 if (fd == -1) {
107 tst_brkm(TFAIL, cleanup, "eventfd2(EFD_NONBLOCK) failed");
108 }
109 fl = fcntl(fd, F_GETFL);
110 if (fl == -1) {
111 tst_brkm(TBROK, cleanup, "fcntl failed");
112 }
113 if ((fl & O_NONBLOCK) == 0) {
114 tst_brkm(TFAIL, cleanup,
115 "eventfd2(EFD_NONBLOCK) didn't set non-blocking mode");
116 }
117 close(fd);
118 tst_resm(TPASS, "eventfd2(EFD_NONBLOCK) PASSED");
119
120 cleanup();
121 tst_exit();
122 }
123