1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 Andrew Turner 5 * 6 * This software was developed by SRI International and the University of 7 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 8 * ("CTSRD"), as part of the DARPA CRASH research programme. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/wait.h> 34 35 #include <errno.h> 36 #include <stdbool.h> 37 #include <stdlib.h> 38 #include <unistd.h> 39 40 #include <atf-c.h> 41 42 #include <crt.h> 43 44 extern bool run_dtors_test; 45 extern bool run_fini_array_test; 46 void dso_handle_check(void); 47 48 49 #ifndef DSO_BASE 50 typedef void (*func_ptr)(void); 51 52 bool run_dtors_test = false; 53 bool run_fini_array_test = false; 54 55 static void 56 dtors_handler(void) 57 { 58 59 if (run_dtors_test) 60 _exit(1); 61 } 62 __section(".dtors") __used static func_ptr dtors_func = 63 &dtors_handler; 64 #endif 65 66 #ifndef DSO_LIB 67 ATF_TC_WITHOUT_HEAD(dtors_test); 68 ATF_TC_BODY(dtors_test, tc) 69 { 70 pid_t pid, wpid; 71 int status; 72 73 pid = fork(); 74 switch(pid) { 75 case -1: 76 break; 77 case 0: 78 run_dtors_test = true; 79 exit(0); 80 default: 81 while ((wpid = waitpid(pid, &status, 0)) == -1 && 82 errno == EINTR) 83 ; 84 #ifdef HAVE_CTORS 85 ATF_REQUIRE_MSG(WEXITSTATUS(status) == 1, 86 ".dtors failed to run"); 87 #else 88 ATF_REQUIRE_MSG(WEXITSTATUS(status) == 0, 89 ".dtors incorrectly ran"); 90 #endif 91 break; 92 } 93 } 94 #endif 95 96 #ifndef DSO_BASE 97 static void 98 fini_array_handler(void) 99 { 100 101 if (run_fini_array_test) 102 _exit(1); 103 } 104 __section(".fini_array") __used static func_ptr fini_array_func = 105 &fini_array_handler; 106 #endif 107 108 #ifndef DSO_LIB 109 ATF_TC_WITHOUT_HEAD(fini_array_test); 110 ATF_TC_BODY(fini_array_test, tc) 111 { 112 pid_t pid, wpid; 113 int status; 114 115 pid = fork(); 116 switch(pid) { 117 case -1: 118 break; 119 case 0: 120 run_fini_array_test = true; 121 exit(0); 122 default: 123 while ((wpid = waitpid(pid, &status, 0)) == -1 && 124 errno == EINTR) 125 ; 126 ATF_REQUIRE_MSG(WEXITSTATUS(status) == 1, 127 ".fini_array failed to run"); 128 break; 129 } 130 } 131 #endif 132 133 #ifndef DSO_BASE 134 extern void *__dso_handle; 135 136 void 137 dso_handle_check(void) 138 { 139 void *dso = __dso_handle; 140 141 #if defined(DSO_LIB) || defined(__PIE__) 142 ATF_REQUIRE_MSG(dso != NULL, 143 "Null __dso_handle in DSO/PIE"); 144 #else 145 ATF_REQUIRE_MSG(dso == NULL, 146 "Invalid __dso_handle in non-DSO"); 147 #endif 148 } 149 #endif 150 151 #ifndef DSO_LIB 152 ATF_TC_WITHOUT_HEAD(dso_handle_test); 153 ATF_TC_BODY(dso_handle_test, tc) 154 { 155 156 dso_handle_check(); 157 } 158 159 ATF_TP_ADD_TCS(tp) 160 { 161 162 ATF_TP_ADD_TC(tp, dtors_test); 163 ATF_TP_ADD_TC(tp, fini_array_test); 164 ATF_TP_ADD_TC(tp, dso_handle_test); 165 166 return (atf_no_error()); 167 } 168 #endif 169