1 /*
2 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "tests.h"
29 #include <asm/unistd.h>
30
31 #if defined __powerpc64__ \
32 || (defined __sparc__ && defined __arch64__)
33 /* Old sigreturn is defined but not implemented in the kernel. */
34 # undef __NR_sigreturn
35 #endif
36
37 #ifdef __NR_sigreturn
38
39 # include <signal.h>
40 # include <stdio.h>
41 # include <stdlib.h>
42
43 # ifdef ASM_SIGRTMIN
44 # define RT_0 ASM_SIGRTMIN
45 # else
46 /* Linux kernel >= 3.18 defines SIGRTMIN to 32 on all architectures. */
47 # define RT_0 32
48 # endif
49
50 static void
handler(int sig)51 handler(int sig)
52 {
53 }
54
55 int
main(void)56 main(void)
57 {
58 static sigset_t set;
59 sigemptyset(&set);
60 sigaddset(&set, SIGINT);
61 sigaddset(&set, SIGUSR2);
62 sigaddset(&set, SIGCHLD);
63 sigaddset(&set, RT_0 + 3);
64 sigaddset(&set, RT_0 + 4);
65 sigaddset(&set, RT_0 + 5);
66 sigaddset(&set, RT_0 + 26);
67 sigaddset(&set, RT_0 + 27);
68 if (sigprocmask(SIG_SETMASK, &set, NULL))
69 perror_msg_and_fail("sigprocmask");
70 sigemptyset(&set);
71
72 /* This should result to old sigreturn. */
73 if (signal(SIGUSR1, handler) == SIG_ERR)
74 perror_msg_and_fail("sigaction");
75
76 if (raise(SIGUSR1))
77 perror_msg_and_fail("raise");
78
79 static const char *const sigs =
80 (SIGUSR2 < SIGCHLD) ? "INT USR2 CHLD" : "INT CHLD USR2";
81 static const char *const rt_sigs = "RT_3 RT_4 RT_5 RT_26 RT_27";
82 printf("sigreturn({mask=[%s %s]}) = 0\n", sigs, rt_sigs);
83
84 puts("+++ exited with 0 +++");
85 return 0;
86 }
87
88 #else
89
90 SKIP_MAIN_UNDEFINED("__NR_sigreturn")
91
92 #endif
93