1 /*
2 * This file is part of rt_sigprocmask strace test.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31 #include <asm/unistd.h>
32
33 #ifdef __NR_rt_sigprocmask
34
35 # include <assert.h>
36 # include <signal.h>
37 # include <stdio.h>
38 # include <string.h>
39 # include <unistd.h>
40
41 static long
k_sigprocmask(const unsigned long how,void * const new_set,void * const old_set,const unsigned long size)42 k_sigprocmask(const unsigned long how, void *const new_set,
43 void *const old_set, const unsigned long size)
44 {
45 return syscall(__NR_rt_sigprocmask, how, new_set, old_set, size);
46 }
47
48 static void
iterate(const char * const text,void * set,void * old,unsigned int size)49 iterate(const char *const text, void *set, void *old, unsigned int size)
50 {
51 for (;;) {
52 if (k_sigprocmask(SIG_UNBLOCK, set, old, size)) {
53 if (size < sizeof(long))
54 tprintf("rt_sigprocmask(SIG_UNBLOCK"
55 ", %p, %p, %u) = -1 EINVAL (%m)\n",
56 set, old, size);
57 else
58 tprintf("rt_sigprocmask(SIG_UNBLOCK"
59 ", %s, %p, %u) = -1 EINVAL (%m)\n",
60 text, old, size);
61 } else {
62 tprintf("rt_sigprocmask(SIG_UNBLOCK, %s, [], %u)"
63 " = 0\n", text, size);
64 }
65 if (!size)
66 break;
67 size >>= 1;
68 set += size;
69 old += size;
70 }
71 }
72
73 int
main(void)74 main(void)
75 {
76 tprintf("%s", "");
77
78 const unsigned int big_size = 1024 / 8;
79 unsigned int set_size;
80
81 for (set_size = big_size; set_size; set_size >>= 1) {
82 if (!k_sigprocmask(SIG_SETMASK, NULL, NULL, set_size))
83 break;
84 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u)"
85 " = -1 EINVAL (%m)\n", set_size);
86 }
87 if (!set_size)
88 perror_msg_and_fail("rt_sigprocmask");
89 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u) = 0\n",
90 set_size);
91
92 void *const k_set = tail_alloc(set_size);
93 void *const old_set = tail_alloc(set_size);
94 sigset_t *const libc_set = tail_alloc(sizeof(sigset_t));
95
96 memset(k_set, 0, set_size);
97 if (k_sigprocmask(SIG_SETMASK, k_set, NULL, set_size))
98 perror_msg_and_fail("rt_sigprocmask");
99 tprintf("rt_sigprocmask(SIG_SETMASK, [], NULL, %u) = 0\n", set_size);
100
101 if (k_sigprocmask(SIG_UNBLOCK, k_set - set_size, old_set, set_size))
102 perror_msg_and_fail("rt_sigprocmask");
103 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[], [], %u) = 0\n", set_size);
104
105 assert(k_sigprocmask(SIG_SETMASK, k_set - set_size,
106 old_set, set_size << 1) == -1);
107 tprintf("rt_sigprocmask(SIG_SETMASK, %p, %p, %u) = -1 EINVAL (%m)\n",
108 k_set - set_size, old_set, set_size << 1);
109
110 iterate("~[]", k_set - set_size, old_set, set_size >> 1);
111
112 sigemptyset(libc_set);
113 sigaddset(libc_set, SIGHUP);
114 memcpy(k_set, libc_set, set_size);
115
116 if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size))
117 perror_msg_and_fail("rt_sigprocmask");
118 tprintf("rt_sigprocmask(SIG_BLOCK, [HUP], [], %u) = 0\n", set_size);
119
120 memset(libc_set, -1, sizeof(sigset_t));
121 sigdelset(libc_set, SIGHUP);
122 memcpy(k_set, libc_set, set_size);
123
124 if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size))
125 perror_msg_and_fail("rt_sigprocmask");
126 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP], [HUP], %u) = 0\n",
127 set_size);
128
129 sigdelset(libc_set, SIGKILL);
130 memcpy(k_set, libc_set, set_size);
131
132 if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size))
133 perror_msg_and_fail("rt_sigprocmask");
134 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP KILL], [HUP], %u) = 0\n",
135 set_size);
136
137 sigemptyset(libc_set);
138 sigaddset(libc_set, SIGHUP);
139 sigaddset(libc_set, SIGINT);
140 sigaddset(libc_set, SIGQUIT);
141 sigaddset(libc_set, SIGALRM);
142 sigaddset(libc_set, SIGTERM);
143 memcpy(k_set, libc_set, set_size);
144
145 if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size))
146 perror_msg_and_fail("rt_sigprocmask");
147 tprintf("rt_sigprocmask(SIG_BLOCK, %s, [HUP], %u) = 0\n",
148 "[HUP INT QUIT ALRM TERM]", set_size);
149
150 if (k_sigprocmask(SIG_SETMASK, NULL, old_set, set_size))
151 perror_msg_and_fail("rt_sigprocmask");
152 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, %s, %u) = 0\n",
153 "[HUP INT QUIT ALRM TERM]", set_size);
154
155 assert(k_sigprocmask(SIG_SETMASK, k_set + (set_size >> 1), NULL,
156 set_size) == -1);
157 tprintf("rt_sigprocmask(SIG_SETMASK, %p, NULL, %u) = -1 EFAULT (%m)\n",
158 k_set + (set_size >> 1), set_size);
159
160 assert(k_sigprocmask(SIG_SETMASK, k_set, old_set + (set_size >> 1),
161 set_size) == -1);
162 tprintf("rt_sigprocmask(SIG_SETMASK, %s, %p, %u) = -1 EFAULT (%m)\n",
163 "[HUP INT QUIT ALRM TERM]",
164 old_set + (set_size >> 1), set_size);
165
166 tprintf("+++ exited with 0 +++\n");
167 return 0;
168 }
169
170 #else
171
172 SKIP_MAIN_UNDEFINED("__NR_rt_sigprocmask")
173
174 #endif
175