1 /*
2 * Copyright (c) 2005, Bull S.A.. All rights reserved.
3 * Created by: Sebastien Decugis
4
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16
17 * This sample test aims to check the following assertions:
18 *
19 * If SA_NODEFER is not set in sa_flags, the caught signal is added to the
20 * thread's signal mask during the handler execution.
21
22 * The steps are:
23 * -> register a signal handler for SIGSEGV
24 * -> raise SIGSEGV
25 * -> In handler, check for reentrance then raise SIGSEGV again.
26
27 * The test fails if signal handler if reentered or signal is not pending when raised again.
28 */
29
30 /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */
31 #define _POSIX_C_SOURCE 200112L
32
33 /******************************************************************************/
34 /*************************** standard includes ********************************/
35 /******************************************************************************/
36 #include <pthread.h>
37 #include <stdarg.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42
43 #include <signal.h>
44 #include <errno.h>
45
46 /******************************************************************************/
47 /*************************** Test framework *******************************/
48 /******************************************************************************/
49 #include "../testfrmw/testfrmw.h"
50 #include "../testfrmw/testfrmw.c"
51 /* This header is responsible for defining the following macros:
52 * UNRESOLVED(ret, descr);
53 * where descr is a description of the error and ret is an int
54 * (error code for example)
55 * FAILED(descr);
56 * where descr is a short text saying why the test has failed.
57 * PASSED();
58 * No parameter.
59 *
60 * Both three macros shall terminate the calling process.
61 * The testcase shall not terminate in any other maneer.
62 *
63 * The other file defines the functions
64 * void output_init()
65 * void output(char * string, ...)
66 *
67 * Those may be used to output information.
68 */
69
70 /******************************************************************************/
71 /**************************** Configuration ***********************************/
72 /******************************************************************************/
73 #ifndef VERBOSE
74 #define VERBOSE 1
75 #endif
76
77 #define SIGNAL SIGSEGV
78
79 /******************************************************************************/
80 /*************************** Test case ***********************************/
81 /******************************************************************************/
82
83 int called = 0;
84
handler(int sig)85 void handler(int sig)
86 {
87 int ret;
88 sigset_t pending;
89 called++;
90
91 if (called == 2) {
92 FAILED("Signal was not masked in signal handler");
93 }
94
95 if (called == 1) {
96
97 /* Raise the signal again. It should be masked */
98 ret = raise(SIGNAL);
99
100 if (ret != 0) {
101 UNRESOLVED(ret, "Failed to raise SIGSEGV again");
102 }
103
104 /* check the signal is pending */
105 ret = sigpending(&pending);
106
107 if (ret != 0) {
108 UNRESOLVED(ret, "Failed to get pending signal set");
109 }
110
111 ret = sigismember(&pending, SIGNAL);
112
113 if (ret != 1) {
114 FAILED("signal is not pending");
115 }
116 }
117
118 called++;
119 }
120
121 /* main function */
main(void)122 int main(void)
123 {
124 int ret;
125
126 struct sigaction sa;
127
128 /* Initialize output */
129 output_init();
130
131 /* Set the signal handler */
132 sa.sa_flags = 0;
133
134 sa.sa_handler = handler;
135
136 ret = sigemptyset(&sa.sa_mask);
137
138 if (ret != 0) {
139 UNRESOLVED(ret, "Failed to empty signal set");
140 }
141
142 /* Install the signal handler for SIGSEGV */
143 ret = sigaction(SIGNAL, &sa, 0);
144
145 if (ret != 0) {
146 UNRESOLVED(ret, "Failed to set signal handler");
147 }
148
149 ret = raise(SIGNAL);
150
151 if (ret != 0) {
152 UNRESOLVED(ret, "Failed to raise SIGSEGV");
153 }
154
155 while (called != 4)
156 sched_yield();
157
158 /* Test passed */
159 #if VERBOSE > 0
160
161 output("Test passed\n");
162
163 #endif
164
165 PASSED;
166 }
167