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: signalfd4_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=5fb5e04926a54bc1c22bba7ca166840f4476196f */
28 /* which says: */
29 /* This patch adds support for the SFD_NONBLOCK flag to signalfd4. The */
30 /* additional changes needed are minimal. The following test must be adjusted */
31 /* for architectures other than x86 and x86-64 and in case the syscall numbers*/
32 /* changed. */
33 /* */
34 /* Usage: <for command-line> */
35 /* signalfd4_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: signalfd4_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 <fcntl.h>
54 #include <signal.h>
55 #include <stdio.h>
56 #include <unistd.h>
57 #include <sys/syscall.h>
58 #include <errno.h>
59
60 #include "test.h"
61 #include "lapi/syscalls.h"
62 #include "ltp_signal.h"
63
64 #define SFD_NONBLOCK O_NONBLOCK
65
66 char *TCID = "signalfd4_02";
67 int testno;
68 int TST_TOTAL = 1;
69
70 /* Extern Global Functions */
71 /******************************************************************************/
72 /* */
73 /* Function: cleanup */
74 /* */
75 /* Description: Performs all one time clean up for this test on successful */
76 /* completion, premature exit or failure. Closes all temporary */
77 /* files, removes all temporary directories exits the test with */
78 /* appropriate return code by calling tst_exit() function. */
79 /* */
80 /* Input: None. */
81 /* */
82 /* Output: None. */
83 /* */
84 /* Return: On failure - Exits calling tst_exit(). Non '0' return code. */
85 /* On success - Exits calling tst_exit(). With '0' return code. */
86 /* */
87 /******************************************************************************/
cleanup(void)88 void cleanup(void)
89 {
90
91 tst_rmdir();
92
93 }
94
95 /* Local Functions */
96 /******************************************************************************/
97 /* */
98 /* Function: setup */
99 /* */
100 /* Description: Performs all one time setup for this test. This function is */
101 /* typically used to capture signals, create temporary dirs */
102 /* and temporary files that may be used in the course of this */
103 /* test. */
104 /* */
105 /* Input: None. */
106 /* */
107 /* Output: None. */
108 /* */
109 /* Return: On failure - Exits by calling cleanup(). */
110 /* On success - returns 0. */
111 /* */
112 /******************************************************************************/
setup(void)113 void setup(void)
114 {
115 /* Capture signals if any */
116 /* Create temporary directories */
117 TEST_PAUSE;
118 tst_tmpdir();
119 }
120
main(int argc,char * argv[])121 int main(int argc, char *argv[])
122 {
123 sigset_t ss;
124 int fd, fl;
125 int lc;
126
127 tst_parse_opts(argc, argv, NULL, NULL);
128 if ((tst_kvercmp(2, 6, 27)) < 0) {
129 tst_brkm(TCONF,
130 NULL,
131 "This test can only run on kernels that are 2.6.27 and higher");
132 }
133 setup();
134
135 for (lc = 0; TEST_LOOPING(lc); ++lc) {
136 tst_count = 0;
137 for (testno = 0; testno < TST_TOTAL; ++testno) {
138 sigemptyset(&ss);
139 sigaddset(&ss, SIGUSR1);
140 fd = ltp_syscall(__NR_signalfd4, -1, &ss,
141 SIGSETSIZE, 0);
142 if (fd == -1) {
143 tst_brkm(TFAIL, cleanup,
144 "signalfd4(0) failed");
145 }
146 fl = fcntl(fd, F_GETFL);
147 if (fl == -1) {
148 tst_brkm(TBROK, cleanup, "fcntl failed");
149 }
150 if (fl & O_NONBLOCK) {
151 tst_brkm(TFAIL,
152 cleanup,
153 "signalfd4(0) set non-blocking mode");
154 }
155 close(fd);
156
157 fd = ltp_syscall(__NR_signalfd4, -1, &ss, SIGSETSIZE,
158 SFD_NONBLOCK);
159 if (fd == -1) {
160 tst_brkm(TFAIL,
161 cleanup,
162 "signalfd4(SFD_NONBLOCK) failed");
163 }
164 fl = fcntl(fd, F_GETFL);
165 if (fl == -1) {
166 tst_brkm(TBROK, cleanup, "fcntl failed");
167 }
168 if ((fl & O_NONBLOCK) == 0) {
169 tst_brkm(TFAIL,
170 cleanup,
171 "signalfd4(SFD_NONBLOCK) does not set non-blocking mode");
172 }
173 close(fd);
174 tst_resm(TPASS, "signalfd4(SFD_NONBLOCK) PASSED");
175 cleanup();
176 }
177 }
178 tst_exit();
179 }
180