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 <fcntl.h>
57 #include <stdio.h>
58 #include <unistd.h>
59 #include <sys/syscall.h>
60 #include <errno.h>
61
62 #include "test.h"
63 #include "lapi/fcntl.h"
64 #include "linux_syscall_numbers.h"
65
66 #define EFD_CLOEXEC O_CLOEXEC
67
68 char *TCID = "eventfd2_01";
69 int testno;
70 int TST_TOTAL = 1;
71
72 /* Extern Global Functions */
73 /******************************************************************************/
74 /* */
75 /* Function: cleanup */
76 /* */
77 /* Description: Performs all one time clean up for this test on successful */
78 /* completion, premature exit or failure. Closes all temporary */
79 /* files, removes all temporary directories exits the test with */
80 /* appropriate return code by calling tst_exit() function. */
81 /* */
82 /* Input: None. */
83 /* */
84 /* Output: None. */
85 /* */
86 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */
87 /* On success - Exits calling tst_exit(). With '0' return code. */
88 /* */
89 /******************************************************************************/
cleanup(void)90 void cleanup(void)
91 {
92
93 tst_rmdir();
94 }
95
96 /* Local Functions */
97 /******************************************************************************/
98 /* */
99 /* Function: setup */
100 /* */
101 /* Description: Performs all one time setup for this test. This function is */
102 /* typically used to capture signals, create temporary dirs */
103 /* and temporary files that may be used in the course of this */
104 /* test. */
105 /* */
106 /* Input: None. */
107 /* */
108 /* Output: None. */
109 /* */
110 /* Return: On failure - Exits by calling cleanup(). */
111 /* On success - returns 0. */
112 /* */
113 /******************************************************************************/
setup(void)114 void setup(void)
115 {
116 /* Capture signals if any */
117 /* Create temporary directories */
118 TEST_PAUSE;
119 tst_tmpdir();
120 }
121
main(int argc,char * argv[])122 int main(int argc, char *argv[])
123 {
124 int fd, coe;
125
126 if ((tst_kvercmp(2, 6, 27)) < 0) {
127 tst_brkm(TCONF, NULL,
128 "This test can only run on kernels that are 2.6.27 and higher");
129 }
130 setup();
131
132 fd = ltp_syscall(__NR_eventfd2, 1, 0);
133 if (fd == -1) {
134 tst_brkm(TFAIL, cleanup, "eventfd2(0) failed");
135 }
136 coe = fcntl(fd, F_GETFD);
137 if (coe == -1) {
138 tst_brkm(TBROK, cleanup, "fcntl failed");
139 }
140 if (coe & FD_CLOEXEC) {
141 tst_brkm(TFAIL, cleanup, "eventfd2(0) set close-on-exec flag");
142 }
143 close(fd);
144
145 fd = ltp_syscall(__NR_eventfd2, 1, EFD_CLOEXEC);
146 if (fd == -1) {
147 tst_brkm(TFAIL, cleanup, "eventfd2(EFD_CLOEXEC) failed");
148 }
149 coe = fcntl(fd, F_GETFD);
150 if (coe == -1) {
151 tst_brkm(TBROK, cleanup, "fcntl failed");
152 }
153 if ((coe & FD_CLOEXEC) == 0) {
154 tst_brkm(TFAIL, cleanup,
155 "eventfd2(EFD_CLOEXEC) does not set close-on-exec flag");
156 }
157 close(fd);
158 tst_resm(TPASS, "eventfd2(EFD_CLOEXEC) Passed");
159 cleanup();
160 tst_exit();
161 }
162