1/* 2 * This file is part of rt_sigprocmask strace test. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> 5 * Copyright (c) 2016-2017 The strace developers. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "tests.h" 32#include <asm/unistd.h> 33 34#ifdef __NR_rt_sigprocmask 35 36# include <assert.h> 37# include <signal.h> 38# include <stdio.h> 39# include <string.h> 40# include <unistd.h> 41 42static long 43k_sigprocmask(const unsigned long how, void *const new_set, 44 void *const old_set, const unsigned long size) 45{ 46 return syscall(__NR_rt_sigprocmask, how, new_set, old_set, size); 47} 48 49static void 50iterate(const char *const text, void *set, void *old, unsigned int size) 51{ 52 for (;;) { 53 if (k_sigprocmask(SIG_UNBLOCK, set, old, size)) { 54 if (size < sizeof(long)) 55 tprintf("rt_sigprocmask(SIG_UNBLOCK" 56 ", %p, %p, %u) = -1 EINVAL (%m)\n", 57 set, old, size); 58 else 59 tprintf("rt_sigprocmask(SIG_UNBLOCK" 60 ", %s, %p, %u) = -1 EINVAL (%m)\n", 61 text, old, size); 62 } else { 63 tprintf("rt_sigprocmask(SIG_UNBLOCK, %s, [], %u)" 64 " = 0\n", text, size); 65 } 66 if (!size) 67 break; 68 size >>= 1; 69 set += size; 70 old += size; 71 } 72} 73 74int 75main(void) 76{ 77 tprintf("%s", ""); 78 79 const unsigned int big_size = 1024 / 8; 80 unsigned int set_size; 81 82 for (set_size = big_size; set_size; set_size >>= 1) { 83 if (!k_sigprocmask(SIG_SETMASK, NULL, NULL, set_size)) 84 break; 85 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u)" 86 " = -1 EINVAL (%m)\n", set_size); 87 } 88 if (!set_size) 89 perror_msg_and_fail("rt_sigprocmask"); 90 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, NULL, %u) = 0\n", 91 set_size); 92 93 void *const k_set = tail_alloc(set_size); 94 void *const old_set = tail_alloc(set_size); 95 TAIL_ALLOC_OBJECT_CONST_PTR(sigset_t, libc_set); 96 97 memset(k_set, 0, set_size); 98 if (k_sigprocmask(SIG_SETMASK, k_set, NULL, set_size)) 99 perror_msg_and_fail("rt_sigprocmask"); 100 tprintf("rt_sigprocmask(SIG_SETMASK, [], NULL, %u) = 0\n", set_size); 101 102 if (k_sigprocmask(SIG_UNBLOCK, k_set - set_size, old_set, set_size)) 103 perror_msg_and_fail("rt_sigprocmask"); 104 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[], [], %u) = 0\n", set_size); 105 106 assert(k_sigprocmask(SIG_SETMASK, k_set - set_size, 107 old_set, set_size << 1) == -1); 108 tprintf("rt_sigprocmask(SIG_SETMASK, %p, %p, %u) = -1 EINVAL (%m)\n", 109 k_set - set_size, old_set, set_size << 1); 110 111 iterate("~[]", k_set - set_size, old_set, set_size >> 1); 112 113 sigemptyset(libc_set); 114 sigaddset(libc_set, SIGHUP); 115 memcpy(k_set, libc_set, set_size); 116 117 if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size)) 118 perror_msg_and_fail("rt_sigprocmask"); 119 tprintf("rt_sigprocmask(SIG_BLOCK, [HUP], [], %u) = 0\n", set_size); 120 121 memset(libc_set, -1, sizeof(sigset_t)); 122 sigdelset(libc_set, SIGHUP); 123 memcpy(k_set, libc_set, set_size); 124 125 if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size)) 126 perror_msg_and_fail("rt_sigprocmask"); 127 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP], [HUP], %u) = 0\n", 128 set_size); 129 130 sigdelset(libc_set, SIGKILL); 131 memcpy(k_set, libc_set, set_size); 132 133 if (k_sigprocmask(SIG_UNBLOCK, k_set, old_set, set_size)) 134 perror_msg_and_fail("rt_sigprocmask"); 135 tprintf("rt_sigprocmask(SIG_UNBLOCK, ~[HUP KILL], [HUP], %u) = 0\n", 136 set_size); 137 138 sigemptyset(libc_set); 139 sigaddset(libc_set, SIGHUP); 140 sigaddset(libc_set, SIGINT); 141 sigaddset(libc_set, SIGQUIT); 142 sigaddset(libc_set, SIGALRM); 143 sigaddset(libc_set, SIGTERM); 144 memcpy(k_set, libc_set, set_size); 145 146 if (k_sigprocmask(SIG_BLOCK, k_set, old_set, set_size)) 147 perror_msg_and_fail("rt_sigprocmask"); 148 tprintf("rt_sigprocmask(SIG_BLOCK, %s, [HUP], %u) = 0\n", 149 "[HUP INT QUIT ALRM TERM]", set_size); 150 151 if (k_sigprocmask(SIG_SETMASK, NULL, old_set, set_size)) 152 perror_msg_and_fail("rt_sigprocmask"); 153 tprintf("rt_sigprocmask(SIG_SETMASK, NULL, %s, %u) = 0\n", 154 "[HUP INT QUIT ALRM TERM]", set_size); 155 156 assert(k_sigprocmask(SIG_SETMASK, k_set + (set_size >> 1), NULL, 157 set_size) == -1); 158 tprintf("rt_sigprocmask(SIG_SETMASK, %p, NULL, %u) = -1 EFAULT (%m)\n", 159 k_set + (set_size >> 1), set_size); 160 161 assert(k_sigprocmask(SIG_SETMASK, k_set, old_set + (set_size >> 1), 162 set_size) == -1); 163 tprintf("rt_sigprocmask(SIG_SETMASK, %s, %p, %u) = -1 EFAULT (%m)\n", 164 "[HUP INT QUIT ALRM TERM]", 165 old_set + (set_size >> 1), set_size); 166 167 tprintf("+++ exited with 0 +++\n"); 168 return 0; 169} 170 171#else 172 173SKIP_MAIN_UNDEFINED("__NR_rt_sigprocmask") 174 175#endif 176