1 /* 2 * This file is part of rt_sigprocmask 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_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 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 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 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
