1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <errno.h> 33 #include <signal.h> 34 #include <stdbool.h> 35 36 #include <atf-c.h> 37 38 /* Return the status of the specified sig's bit. */ 39 static bool 40 sigbitstatus(const sigset_t *set, int sig) 41 { 42 43 return (set->__bits[_SIG_WORD(sig)] & _SIG_BIT(sig)) != 0; 44 } 45 46 /* Verify that sig is the lone bit set in the sigset. */ 47 static void 48 siglonebit(const sigset_t *set, int sig) 49 { 50 int i; 51 52 for (i = 0; i < _SIG_WORDS; ++i) { 53 if (i != _SIG_WORD(sig)) 54 ATF_REQUIRE_MSG(set->__bits[i] == 0, 55 "word %d altered to %x", i, set->__bits[i]); 56 else 57 ATF_REQUIRE_MSG((set->__bits[i] & ~_SIG_BIT(sig)) == 0, 58 "word %d has other bits set: %x", i, 59 set->__bits[i] & ~_SIG_BIT(sig)); 60 } 61 } 62 63 static void 64 sigcompare(const sigset_t *left, const sigset_t *right) 65 { 66 int i; 67 68 for (i = 0; i < _SIG_WORDS; ++i) { 69 ATF_REQUIRE_MSG(left->__bits[i] == right->__bits[i], 70 "sig comparison failed at %d; left=%x, right=%x", 71 i, left->__bits[i], right->__bits[i]); 72 } 73 } 74 75 /* 76 * Test implementation details of our sigsetops... make sure the correct bits 77 * are getting set, for the most part, and that duplicate operations don't 78 * error out. 79 */ 80 ATF_TC_WITHOUT_HEAD(posix_sigsetop_test); 81 ATF_TC_BODY(posix_sigsetop_test, tc) 82 { 83 sigset_t set; 84 int i; 85 86 ATF_REQUIRE(sigfillset(&set) == 0); 87 for (i = 0; i < _SIG_WORDS; ++i) { 88 ATF_REQUIRE_MSG(set.__bits[i] == ~0U, "sigfillset failed @ %d", 89 i); 90 } 91 ATF_REQUIRE(sigemptyset(&set) == 0); 92 for (i = 0; i < _SIG_WORDS; ++i) { 93 ATF_REQUIRE_MSG(set.__bits[i] == 0, "sigemptyset failed @ %d", 94 i); 95 } 96 /* Ensure that sigismember reflects the empty set status. */ 97 for (i = 1; i < NSIG; ++i) { 98 ATF_REQUIRE(sigismember(&set, i) == 0); 99 } 100 101 ATF_REQUIRE(sigaddset(&set, -1) == -1 && errno == EINVAL); 102 ATF_REQUIRE(sigaddset(&set, _SIG_MAXSIG + 1) == -1 && errno == EINVAL); 103 ATF_REQUIRE(sigdelset(&set, -1) == -1 && errno == EINVAL); 104 ATF_REQUIRE(sigdelset(&set, _SIG_MAXSIG + 1) == -1 && errno == EINVAL); 105 106 ATF_REQUIRE(sigaddset(&set, SIGSEGV) == 0); 107 ATF_REQUIRE(sigismember(&set, SIGSEGV) != 0); 108 ATF_REQUIRE_MSG(sigbitstatus(&set, SIGSEGV), "sigaddset failure"); 109 siglonebit(&set, SIGSEGV); 110 111 /* 112 * A second addition should succeed without altering the state. This 113 * should be trivially true. 114 */ 115 ATF_REQUIRE(sigaddset(&set, SIGSEGV) == 0); 116 ATF_REQUIRE_MSG(sigbitstatus(&set, SIGSEGV), 117 "sigaddset twice changed bit"); 118 119 ATF_REQUIRE(sigdelset(&set, SIGSEGV) == 0); 120 ATF_REQUIRE_MSG(!sigbitstatus(&set, SIGSEGV), "sigdelset failure"); 121 ATF_REQUIRE(sigismember(&set, SIGSEGV) == 0); 122 ATF_REQUIRE(sigdelset(&set, SIGSEGV) == 0); 123 ATF_REQUIRE_MSG(!sigbitstatus(&set, SIGSEGV), 124 "sigdelset twice changed bit"); 125 for (i = 0; i < _SIG_WORDS; ++i) { 126 ATF_REQUIRE_MSG(set.__bits[i] == 0, "set not empty @ %d", 127 i); 128 } 129 for (i = 1; i < NSIG; ++i) { 130 ATF_REQUIRE(sigismember(&set, i) == 0); 131 } 132 } 133 134 /* 135 * Test extended sigset ops for union/intersection and testing of empty set. 136 */ 137 ATF_TC_WITHOUT_HEAD(extended_sigsetop_test); 138 ATF_TC_BODY(extended_sigsetop_test, tc) 139 { 140 sigset_t chkset, set1, set2, set3; 141 142 sigemptyset(&chkset); 143 sigemptyset(&set1); 144 sigemptyset(&set2); 145 ATF_REQUIRE(sigisemptyset(&chkset) != 0); 146 sigaddset(&set1, SIGSEGV); 147 sigaddset(&set2, SIGKILL); 148 sigaddset(&chkset, SIGSEGV); 149 ATF_REQUIRE(sigisemptyset(&chkset) == 0); 150 sigaddset(&chkset, SIGKILL); 151 ATF_REQUIRE(sigorset(&set3, &set1, &set2) == 0); 152 ATF_REQUIRE(sigbitstatus(&set3, SIGSEGV)); 153 ATF_REQUIRE(sigbitstatus(&set3, SIGKILL)); 154 155 /* 156 * chkset was built with our POSIX-specified set operations that we've 157 * already tested, so it's a good comparison. 158 */ 159 sigcompare(&chkset, &set3); 160 /* 161 * Clear chkset; make sure sigisemptyset() still looks ok. sigaddset 162 * and sigdelset have already been tested to make sure that they're not 163 * touching other bits. 164 */ 165 sigdelset(&chkset, SIGSEGV); 166 sigdelset(&chkset, SIGKILL); 167 ATF_REQUIRE(sigisemptyset(&chkset) != 0); 168 ATF_REQUIRE(sigandset(&set3, &set1, &set2) == 0); 169 /* Make sure we clobbered these. */ 170 ATF_REQUIRE(!sigbitstatus(&set3, SIGSEGV)); 171 ATF_REQUIRE(!sigbitstatus(&set3, SIGKILL)); 172 ATF_REQUIRE(sigisemptyset(&set3) != 0); 173 /* Rebuild for sigandset test */ 174 sigemptyset(&set1); 175 sigemptyset(&set2); 176 sigaddset(&set1, SIGSEGV); 177 sigaddset(&set1, SIGKILL); 178 sigaddset(&set2, SIGSEGV); 179 ATF_REQUIRE(sigandset(&set3, &set1, &set2) == 0); 180 ATF_REQUIRE(sigbitstatus(&set3, SIGSEGV)); 181 ATF_REQUIRE(!sigbitstatus(&set3, SIGKILL)); 182 } 183 184 ATF_TP_ADD_TCS(tp) 185 { 186 187 ATF_TP_ADD_TC(tp, posix_sigsetop_test); 188 ATF_TP_ADD_TC(tp, extended_sigsetop_test); 189 190 return (atf_no_error()); 191 } 192