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_01.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=b087498eb5605673b0f260a7620d91818cd72304 */
28 /* says: */
29 /* This patch adds the new eventfd2 syscall. It extends the old eventfd */
30 /* syscall by one parameter which is meant to hold a flag value. In this */
31 /* patch the only flag support is EFD_CLOEXEC which causes the close-on-exec */
32 /* flag for the returned file descriptor to be set. A new name EFD_CLOEXEC is */
33 /* introduced which in this implementation must have the same value as */
34 /* O_CLOEXEC. The following test must be adjusted for architectures other than*/
35 /* x86 and x86-64 and in case the syscall numbers changed. */
36 /* */
37 /* Usage: <for command-line> */
38 /* eventfd2_01 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
39 /* where, -c n : Run n copies concurrently. */
40 /* -e : Turn on errno logging. */
41 /* -i n : Execute test n times. */
42 /* -I x : Execute test for x seconds. */
43 /* -P x : Pause for x seconds between iterations. */
44 /* -t : Turn on syscall timing. */
45 /* */
46 /* Total Tests: 1 */
47 /* */
48 /* Test Name: eventfd2_01 */
49 /* */
50 /* Author: Ulrich Drepper <drepper@redhat.com> */
51 /* */
52 /* History: Created - Jan 08 2009 - Ulrich Drepper <drepper@redhat.com> */
53 /* Ported to LTP */
54 /* - Jan 08 2009 - Subrata <subrata@linux.vnet.ibm.com> */
55 /******************************************************************************/
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 #define EFD_CLOEXEC O_CLOEXEC
66
67 char *TCID = "eventfd2_01";
68 int testno;
69 int TST_TOTAL = 1;
70
cleanup(void)71 void cleanup(void)
72 {
73 tst_rmdir();
74 }
75
setup(void)76 void setup(void)
77 {
78 TEST_PAUSE;
79 tst_tmpdir();
80 }
81
main(int argc,char * argv[])82 int main(int argc, char *argv[])
83 {
84 int fd, coe;
85
86 tst_parse_opts(argc, argv, NULL, NULL);
87
88 if ((tst_kvercmp(2, 6, 27)) < 0) {
89 tst_brkm(TCONF, NULL,
90 "This test can only run on kernels that are 2.6.27 and higher");
91 }
92 setup();
93
94 fd = ltp_syscall(__NR_eventfd2, 1, 0);
95 if (fd == -1) {
96 tst_brkm(TFAIL, cleanup, "eventfd2(0) failed");
97 }
98 coe = fcntl(fd, F_GETFD);
99 if (coe == -1) {
100 tst_brkm(TBROK, cleanup, "fcntl failed");
101 }
102 if (coe & FD_CLOEXEC) {
103 tst_brkm(TFAIL, cleanup, "eventfd2(0) set close-on-exec flag");
104 }
105 close(fd);
106
107 fd = ltp_syscall(__NR_eventfd2, 1, EFD_CLOEXEC);
108 if (fd == -1) {
109 tst_brkm(TFAIL, cleanup, "eventfd2(EFD_CLOEXEC) failed");
110 }
111 coe = fcntl(fd, F_GETFD);
112 if (coe == -1) {
113 tst_brkm(TBROK, cleanup, "fcntl failed");
114 }
115 if ((coe & FD_CLOEXEC) == 0) {
116 tst_brkm(TFAIL, cleanup,
117 "eventfd2(EFD_CLOEXEC) does not set close-on-exec flag");
118 }
119 close(fd);
120 tst_resm(TPASS, "eventfd2(EFD_CLOEXEC) Passed");
121 cleanup();
122 tst_exit();
123 }
124