1 /*
2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
3 * AUTHOR : Bob Clark
4 * CO-PILOT : Barrie Kletscher
5 * DATE STARTED : 9/26/86
6 * Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it would be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 *
16 * Further, this software is distributed without any warranty that it is
17 * free of the rightful claim of any third person regarding infringement
18 * or the like. Any license provided herein, whether implied or
19 * otherwise, applies only to this software file. Patent licenses, if
20 * any, provided herein do not apply to combinations of this program with
21 * other software, or any other product whatsoever.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write the Free Software Foundation, Inc.,
25 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 *
27 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
28 * Mountain View, CA 94043, or:
29 *
30 * http://www.sgi.com
31 *
32 * For further information regarding this notice, see:
33 *
34 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
35 */
36 /*
37 * TEST ITEMS
38 * 1. sighold action to turn off the receipt of all signals was done
39 * without error.
40 * 2. After signals were held, and sent, no signals were trapped.
41 */
42 #define _XOPEN_SOURCE 500
43 #include <errno.h>
44 #include <signal.h>
45 #include <string.h>
46 #include <fcntl.h>
47 #include <stdlib.h>
48 #include <sys/types.h>
49 #include <sys/wait.h>
50 #include "test.h"
51 #include "safe_macros.h"
52
53 /* _XOPEN_SOURCE disables NSIG */
54 #ifndef NSIG
55 # define NSIG _NSIG
56 #endif
57
58 /* Needed for NPTL */
59 #define SIGCANCEL 32
60 #define SIGTIMER 33
61
62 /* ensure NUMSIGS is defined */
63 #ifndef NUMSIGS
64 # define NUMSIGS NSIG
65 #endif
66
67 char *TCID = "sighold02";
68 int TST_TOTAL = 2;
69
70 static int pid;
71 static void do_child(void);
72 static void setup(void);
73 static void cleanup(void);
74
75 static int sigs_catched;
76 static int sigs_map[NUMSIGS];
77
skip_sig(int sig)78 static int skip_sig(int sig)
79 {
80 switch (sig) {
81 case SIGCHLD:
82 case SIGKILL:
83 case SIGALRM:
84 case SIGSTOP:
85 case SIGCANCEL:
86 case SIGTIMER:
87 return 1;
88 default:
89 return 0;
90 }
91 }
92
main(int ac,char ** av)93 int main(int ac, char **av)
94 {
95 int sig;
96 int lc;
97
98 tst_parse_opts(ac, av, NULL, NULL);
99
100 #ifdef UCLINUX
101 maybe_run_child(&do_child, "");
102 #endif
103
104 setup();
105
106 for (lc = 0; TEST_LOOPING(lc); lc++) {
107 if ((pid = FORK_OR_VFORK()) < 0) {
108 tst_brkm(TBROK | TERRNO, NULL, "fork() failed");
109 } else if (pid > 0) {
110 TST_SAFE_CHECKPOINT_WAIT(NULL, 0);
111
112 for (sig = 1; sig < NUMSIGS; sig++) {
113 if (skip_sig(sig))
114 continue;
115 SAFE_KILL(NULL, pid, sig);
116 }
117
118 TST_SAFE_CHECKPOINT_WAKE(NULL, 0);
119 tst_record_childstatus(cleanup, pid);
120 } else {
121
122 #ifdef UCLINUX
123 if (self_exec(av[0], "") < 0) {
124 tst_brkm(TBROK | TERRNO, NULL,
125 "self_exec() failed");
126 }
127 #else
128 do_child();
129 #endif
130 }
131 }
132
133 cleanup();
134 tst_exit();
135 }
136
handle_sigs(int sig)137 static void handle_sigs(int sig)
138 {
139 sigs_map[sig] = 1;
140 sigs_catched++;
141 }
142
do_child(void)143 void do_child(void)
144 {
145 int cnt;
146 int sig;
147
148 /* set up signal handler routine */
149 for (sig = 1; sig < NUMSIGS; sig++) {
150 if (skip_sig(sig))
151 continue;
152
153 if (signal(sig, handle_sigs) == SIG_ERR) {
154 tst_resm(TBROK | TERRNO, "signal() %i(%s) failed",
155 sig, tst_strsig(sig));
156 }
157 }
158
159 /* all set up to catch signals, now hold them */
160 for (cnt = 0, sig = 1; sig < NUMSIGS; sig++) {
161 if (skip_sig(sig))
162 continue;
163 cnt++;
164 TEST(sighold(sig));
165 if (TEST_RETURN != 0) {
166 tst_resm(TBROK | TTERRNO, "sighold() %i(%s) failed",
167 sig, tst_strsig(sig));
168 }
169 }
170
171 TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0);
172
173 if (!sigs_catched) {
174 tst_resm(TPASS, "All signals were hold");
175 tst_exit();
176 }
177
178 tst_resm(TFAIL, "Signal handler was executed");
179
180 for (sig = 1; sig < NUMSIGS; sig++) {
181 if (sigs_map[sig]) {
182 tst_resm(TINFO, "Signal %i(%s) catched",
183 sig, tst_strsig(sig));
184 }
185 }
186
187 tst_exit();
188 }
189
setup(void)190 static void setup(void)
191 {
192 tst_sig(FORK, DEF_HANDLER, NULL);
193
194 tst_tmpdir();
195
196 TST_CHECKPOINT_INIT(tst_rmdir);
197
198 TEST_PAUSE;
199 }
200
cleanup(void)201 static void cleanup(void)
202 {
203 tst_rmdir();
204 }
205