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 #include "lapi/signal.h"
53
54 /* _XOPEN_SOURCE disables NSIG */
55 #ifndef NSIG
56 # define NSIG _NSIG
57 #endif
58
59 /* ensure NUMSIGS is defined */
60 #ifndef NUMSIGS
61 # define NUMSIGS NSIG
62 #endif
63
64 char *TCID = "sighold02";
65 int TST_TOTAL = 2;
66
67 static int pid;
68 static void do_child(void);
69 static void setup(void);
70 static void cleanup(void);
71
72 static int sigs_catched;
73 static int sigs_map[NUMSIGS];
74
skip_sig(int sig)75 static int skip_sig(int sig)
76 {
77 if (sig >= __SIGRTMIN && sig < SIGRTMIN)
78 return 1;
79
80 switch (sig) {
81 case SIGCHLD:
82 case SIGKILL:
83 case SIGALRM:
84 case SIGSTOP:
85 return 1;
86 default:
87 return 0;
88 }
89 }
90
main(int ac,char ** av)91 int main(int ac, char **av)
92 {
93 int sig;
94 int lc;
95
96 tst_parse_opts(ac, av, NULL, NULL);
97
98 #ifdef UCLINUX
99 maybe_run_child(&do_child, "");
100 #endif
101
102 setup();
103
104 for (lc = 0; TEST_LOOPING(lc); lc++) {
105 if ((pid = FORK_OR_VFORK()) < 0) {
106 tst_brkm(TBROK | TERRNO, NULL, "fork() failed");
107 } else if (pid > 0) {
108 TST_SAFE_CHECKPOINT_WAIT(NULL, 0);
109
110 for (sig = 1; sig < NUMSIGS; sig++) {
111 if (skip_sig(sig))
112 continue;
113 SAFE_KILL(NULL, pid, sig);
114 }
115
116 TST_SAFE_CHECKPOINT_WAKE(NULL, 0);
117 tst_record_childstatus(cleanup, pid);
118 } else {
119
120 #ifdef UCLINUX
121 if (self_exec(av[0], "") < 0) {
122 tst_brkm(TBROK | TERRNO, NULL,
123 "self_exec() failed");
124 }
125 #else
126 do_child();
127 #endif
128 }
129 }
130
131 cleanup();
132 tst_exit();
133 }
134
handle_sigs(int sig)135 static void handle_sigs(int sig)
136 {
137 sigs_map[sig] = 1;
138 sigs_catched++;
139 }
140
do_child(void)141 void do_child(void)
142 {
143 int cnt;
144 int sig;
145
146 /* set up signal handler routine */
147 for (sig = 1; sig < NUMSIGS; sig++) {
148 if (skip_sig(sig))
149 continue;
150
151 if (signal(sig, handle_sigs) == SIG_ERR) {
152 tst_resm(TBROK | TERRNO, "signal() %i(%s) failed",
153 sig, tst_strsig(sig));
154 }
155 }
156
157 /* all set up to catch signals, now hold them */
158 for (cnt = 0, sig = 1; sig < NUMSIGS; sig++) {
159 if (skip_sig(sig))
160 continue;
161 cnt++;
162 TEST(sighold(sig));
163 if (TEST_RETURN != 0) {
164 tst_resm(TBROK | TTERRNO, "sighold() %i(%s) failed",
165 sig, tst_strsig(sig));
166 }
167 }
168
169 TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0);
170
171 if (!sigs_catched) {
172 tst_resm(TPASS, "All signals were hold");
173 tst_exit();
174 }
175
176 tst_resm(TFAIL, "Signal handler was executed");
177
178 for (sig = 1; sig < NUMSIGS; sig++) {
179 if (sigs_map[sig]) {
180 tst_resm(TINFO, "Signal %i(%s) catched",
181 sig, tst_strsig(sig));
182 }
183 }
184
185 tst_exit();
186 }
187
setup(void)188 static void setup(void)
189 {
190 tst_sig(FORK, DEF_HANDLER, NULL);
191
192 tst_tmpdir();
193
194 TST_CHECKPOINT_INIT(tst_rmdir);
195
196 TEST_PAUSE;
197 }
198
cleanup(void)199 static void cleanup(void)
200 {
201 tst_rmdir();
202 }
203