1 /* 2 * This file is part of rt_sigtimedwait strace test. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) 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_sigtimedwait 34 35 # include <assert.h> 36 # include <errno.h> 37 # include <signal.h> 38 # include <stdio.h> 39 # include <stdint.h> 40 # include <string.h> 41 # include <unistd.h> 42 43 static long 44 k_sigtimedwait(const sigset_t *const set, siginfo_t *const info, 45 const struct timespec *const timeout, const unsigned long size) 46 { 47 return syscall(__NR_rt_sigtimedwait, set, info, timeout, size); 48 } 49 50 static void 51 iterate(const char *const text, const void *set, 52 const struct timespec *const timeout, unsigned int size) 53 { 54 for (;;) { 55 assert(k_sigtimedwait(set, NULL, timeout, size) == -1); 56 if (EINTR == errno) { 57 tprintf("rt_sigtimedwait(%s, NULL, " 58 "{tv_sec=%jd, tv_nsec=%jd}, %u)" 59 " = -1 EAGAIN (%m)\n", text, 60 (intmax_t) timeout->tv_sec, 61 (intmax_t) timeout->tv_nsec, 62 size); 63 } else { 64 if (size < sizeof(long)) 65 tprintf("rt_sigtimedwait(%p, NULL, " 66 "{tv_sec=%jd, tv_nsec=%jd}" 67 ", %u) = -1 EINVAL (%m)\n", 68 set, (intmax_t) timeout->tv_sec, 69 (intmax_t) timeout->tv_nsec, size); 70 else 71 tprintf("rt_sigtimedwait(%s, NULL, " 72 "{tv_sec=%jd, tv_nsec=%jd}" 73 ", %u) = -1 EINVAL (%m)\n", 74 text, (intmax_t) timeout->tv_sec, 75 (intmax_t) timeout->tv_nsec, size); 76 } 77 if (!size) 78 break; 79 size >>= 1; 80 set += size; 81 } 82 } 83 84 int 85 main(void) 86 { 87 tprintf("%s", ""); 88 89 siginfo_t *const info = tail_alloc(sizeof(*info)); 90 struct timespec *const timeout = tail_alloc(sizeof(*timeout)); 91 timeout->tv_sec = 0; 92 timeout->tv_nsec = 42; 93 94 const unsigned int big_size = 1024 / 8; 95 void *k_set = tail_alloc(big_size); 96 memset(k_set, 0, big_size); 97 98 unsigned int set_size = big_size; 99 for (; set_size; set_size >>= 1, k_set += set_size) { 100 assert(k_sigtimedwait(k_set, NULL, timeout, set_size) == -1); 101 if (EAGAIN == errno) 102 break; 103 tprintf("rt_sigtimedwait(%p, NULL, {tv_sec=%jd, tv_nsec=%jd}, %u)" 104 " = -1 EINVAL (%m)\n", 105 k_set, (intmax_t) timeout->tv_sec, 106 (intmax_t) timeout->tv_nsec, set_size); 107 } 108 if (!set_size) 109 perror_msg_and_fail("rt_sigtimedwait"); 110 tprintf("rt_sigtimedwait([], NULL, {tv_sec=%jd, tv_nsec=%jd}, %u) = -1 EAGAIN (%m)\n", 111 (intmax_t) timeout->tv_sec, (intmax_t) timeout->tv_nsec, 112 set_size); 113 114 sigset_t *const libc_set = tail_alloc(sizeof(sigset_t)); 115 sigemptyset(libc_set); 116 sigaddset(libc_set, SIGHUP); 117 memcpy(k_set, libc_set, set_size); 118 119 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1); 120 assert(EAGAIN == errno); 121 tprintf("rt_sigtimedwait([HUP], %p, {tv_sec=%jd, tv_nsec=%jd}, %u) = -1 EAGAIN (%m)\n", 122 info, (intmax_t) timeout->tv_sec, 123 (intmax_t) timeout->tv_nsec, set_size); 124 125 sigaddset(libc_set, SIGINT); 126 memcpy(k_set, libc_set, set_size); 127 128 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1); 129 assert(EAGAIN == errno); 130 tprintf("rt_sigtimedwait([HUP INT], %p, {tv_sec=%jd, tv_nsec=%jd}, %u)" 131 " = -1 EAGAIN (%m)\n", 132 info, (intmax_t) timeout->tv_sec, 133 (intmax_t) timeout->tv_nsec, set_size); 134 135 sigaddset(libc_set, SIGQUIT); 136 sigaddset(libc_set, SIGALRM); 137 sigaddset(libc_set, SIGTERM); 138 memcpy(k_set, libc_set, set_size); 139 140 assert(k_sigtimedwait(k_set, info, timeout, set_size) == -1); 141 assert(EAGAIN == errno); 142 tprintf("rt_sigtimedwait(%s, %p, {tv_sec=%jd, tv_nsec=%jd}, %u) = -1 EAGAIN (%m)\n", 143 "[HUP INT QUIT ALRM TERM]", 144 info, (intmax_t) timeout->tv_sec, 145 (intmax_t) timeout->tv_nsec, set_size); 146 147 memset(k_set - set_size, -1, set_size); 148 assert(k_sigtimedwait(k_set - set_size, info, timeout, set_size) == -1); 149 assert(EAGAIN == errno); 150 tprintf("rt_sigtimedwait(~[], %p, {tv_sec=%jd, tv_nsec=%jd}, %u) = -1 EAGAIN (%m)\n", 151 info, (intmax_t) timeout->tv_sec, 152 (intmax_t) timeout->tv_nsec, set_size); 153 154 if (sigprocmask(SIG_SETMASK, libc_set, NULL)) 155 perror_msg_and_fail("sigprocmask"); 156 157 assert(k_sigtimedwait(k_set - set_size, info, NULL, set_size << 1) == -1); 158 tprintf("rt_sigtimedwait(%p, %p, NULL, %u) = -1 EINVAL (%m)\n", 159 k_set - set_size, info, set_size << 1); 160 161 iterate("~[]", k_set - set_size, timeout, set_size >> 1); 162 163 timeout->tv_sec = 1; 164 raise(SIGALRM); 165 assert(k_sigtimedwait(k_set, info, timeout, set_size) == SIGALRM); 166 tprintf("rt_sigtimedwait(%s, {si_signo=%s, si_code=SI_TKILL" 167 ", si_pid=%d, si_uid=%d}, {tv_sec=%jd, tv_nsec=%jd}, %u) = %d (%s)\n", 168 "[HUP INT QUIT ALRM TERM]", "SIGALRM", getpid(), getuid(), 169 (intmax_t) timeout->tv_sec, (intmax_t) timeout->tv_nsec, 170 set_size, SIGALRM, "SIGALRM"); 171 172 raise(SIGALRM); 173 assert(k_sigtimedwait(k_set, NULL, NULL, set_size) == SIGALRM); 174 tprintf("rt_sigtimedwait(%s, NULL, NULL, %u) = %d (%s)\n", 175 "[HUP INT QUIT ALRM TERM]", set_size, SIGALRM, "SIGALRM"); 176 177 tprintf("+++ exited with 0 +++\n"); 178 return 0; 179 } 180 181 #else 182 183 SKIP_MAIN_UNDEFINED("__NR_rt_sigtimedwait") 184 185 #endif 186
