1 /*
2 * This file is part of rt_sigtimedwait strace test.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
5 * Copyright (c) 2016-2023 The strace developers.
6 * All rights reserved.
7 *
8 * SPDX-License-Identifier: GPL-2.0-or-later
9 */
10
11 #include "tests.h"
12 #include "scno.h"
13
14 #ifdef __NR_rt_sigtimedwait
15
16 # include <assert.h>
17 # include <errno.h>
18 # include <signal.h>
19 # include <stdio.h>
20 # include <stdint.h>
21 # include <string.h>
22 # include <unistd.h>
23
24 static long
25 k_sigtimedwait(const sigset_t *const set, siginfo_t *const info,
26 const kernel_old_timespec_t *const timeout, const unsigned long size)
27 {
28 return syscall(__NR_rt_sigtimedwait, set, info, timeout, size);
29 }
30
31 static void
32 iterate(const char *const text, const void *set,
33 const kernel_old_timespec_t *const timeout, unsigned int size)
34 {
35 for (;;) {
36 assert(k_sigtimedwait(set, NULL, timeout, size) == -1);
37 if (EINTR == errno) {
38 tprintf("rt_sigtimedwait(%s, NULL"
39 ", {tv_sec=%lld, tv_nsec=%llu}, %u)"
40 " = -1 EAGAIN (%m)\n", text,
41 (long long) timeout->tv_sec,
42 zero_extend_signed_to_ull(timeout->tv_nsec),
43 size);
44 } else {
45 if (size < sizeof(long))
46 tprintf("rt_sigtimedwait(%p, NULL"
47 ", {tv_sec=%lld, tv_nsec=%llu}"
48 ", %u) = -1 EINVAL (%m)\n",
49 set, (long long) timeout->tv_sec,
50 zero_extend_signed_to_ull(timeout->tv_nsec),
51 size);
52 else
53 tprintf("rt_sigtimedwait(%s, NULL"
54 ", {tv_sec=%lld, tv_nsec=%llu}"
55 ", %u) = -1 EINVAL (%m)\n",
56 text, (long long) timeout->tv_sec,
57 zero_extend_signed_to_ull(timeout->tv_nsec),
58 size);
59 }
60 if (!size)
61 break;
62 size >>= 1;
63 set += size;
64 }
65 }
66
67 int
68 main(void)
69 {
70 tprintf("%s", "");
71
72 TAIL_ALLOC_OBJECT_CONST_PTR(siginfo_t, info);
73 TAIL_ALLOC_OBJECT_CONST_PTR(kernel_old_timespec_t, timeout);
74 timeout->tv_sec = 0;
75 timeout->tv_nsec = 42;
76
77 const unsigned int big_size = 1024 / 8;
78 void *k_set = tail_alloc(big_size);
79 memset(k_set, 0, big_size);
80
81 unsigned int set_size = big_size;
82 for (; set_size; set_size >>= 1, k_set += set_size) {
83 assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
84 if (EAGAIN == errno)
85 break;
86 tprintf("rt_sigtimedwait(%p, NULL, {tv_sec=%lld, tv_nsec=%llu}"
87 ", %u) = -1 EINVAL (%m)\n",
88 k_set, (long long) timeout->tv_sec,
89 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
90 }
91 if (!set_size)
92 perror_msg_and_fail("rt_sigtimedwait");
93 tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}, %u)"
94 " = -1 EAGAIN (%m)\n",
95 (long long) timeout->tv_sec,
96 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
97
98 timeout->tv_sec = 0xdeadbeefU;
99 timeout->tv_nsec = 0xfacefeedU;
100 assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
101 tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}"
102 ", %u) = -1 EINVAL (%m)\n",
103 (long long) timeout->tv_sec,
104 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
105
106 timeout->tv_sec = (typeof(timeout->tv_sec)) 0xcafef00ddeadbeefLL;
107 timeout->tv_nsec = (long) 0xbadc0dedfacefeedLL;
108 assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1);
109 tprintf("rt_sigtimedwait([], NULL, {tv_sec=%lld, tv_nsec=%llu}"
110 ", %u) = -1 EINVAL (%m)\n",
111 (long long) timeout->tv_sec,
112 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
113
114 timeout->tv_sec = 0;
115 timeout->tv_nsec = 42;
116
117 TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set);
118 sigemptyset(libc_set);
119 sigaddset(libc_set, SIGHUP);
120 memcpy(k_set, libc_set, set_size);
121
122 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
123 assert(EAGAIN == errno);
124 tprintf("rt_sigtimedwait([HUP], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
125 " = -1 EAGAIN (%m)\n",
126 info, (long long) timeout->tv_sec,
127 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
128
129 sigaddset(libc_set, SIGINT);
130 memcpy(k_set, libc_set, set_size);
131
132 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
133 assert(EAGAIN == errno);
134 tprintf("rt_sigtimedwait([HUP INT], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
135 " = -1 EAGAIN (%m)\n",
136 info, (long long) timeout->tv_sec,
137 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
138
139 sigaddset(libc_set, SIGQUIT);
140 sigaddset(libc_set, SIGALRM);
141 sigaddset(libc_set, SIGTERM);
142 memcpy(k_set, libc_set, set_size);
143
144 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1);
145 assert(EAGAIN == errno);
146 tprintf("rt_sigtimedwait(%s, %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
147 " = -1 EAGAIN (%m)\n",
148 "[HUP INT QUIT ALRM TERM]",
149 info, (long long) timeout->tv_sec,
150 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
151
152 memset(k_set - set_size, -1, set_size);
153 assert(k_sigtimedwait(k_set - set_size, info, timeout, set_size) == -1);
154 assert(EAGAIN == errno);
155 tprintf("rt_sigtimedwait(~[], %p, {tv_sec=%lld, tv_nsec=%llu}, %u)"
156 " = -1 EAGAIN (%m)\n",
157 info, (long long) timeout->tv_sec,
158 zero_extend_signed_to_ull(timeout->tv_nsec), set_size);
159
160 if (sigprocmask(SIG_SETMASK, libc_set, NULL))
161 perror_msg_and_fail("sigprocmask");
162
163 assert(k_sigtimedwait(k_set - set_size, info, NULL, set_size << 1) == -1);
164 tprintf("rt_sigtimedwait(%p, %p, NULL, %u) = -1 EINVAL (%m)\n",
165 k_set - set_size, info, set_size << 1);
166
167 iterate("~[]", k_set - set_size, timeout, set_size >> 1);
168
169 timeout->tv_sec = 1;
170 raise(SIGALRM);
171 assert(k_sigtimedwait(k_set, info, timeout, set_size) == SIGALRM);
172 tprintf("rt_sigtimedwait(%s, {si_signo=%s, si_code=SI_TKILL"
173 ", si_pid=%d, si_uid=%d}, {tv_sec=%lld, tv_nsec=%llu}, %u)"
174 " = %d (%s)\n",
175 "[HUP INT QUIT ALRM TERM]", "SIGALRM", getpid(), getuid(),
176 (long long) timeout->tv_sec,
177 zero_extend_signed_to_ull(timeout->tv_nsec),
178 set_size, SIGALRM, "SIGALRM");
179
180 raise(SIGALRM);
181 assert(k_sigtimedwait(k_set, NULL, NULL, set_size) == SIGALRM);
182 tprintf("rt_sigtimedwait(%s, NULL, NULL, %u) = %d (%s)\n",
183 "[HUP INT QUIT ALRM TERM]", set_size, SIGALRM, "SIGALRM");
184
185 tprintf("+++ exited with 0 +++\n");
186 return 0;
187 }
188
189 #else
190
191 SKIP_MAIN_UNDEFINED("__NR_rt_sigtimedwait")
192
193 #endif