1/* $NetBSD: t_wait_noproc.c,v 1.6 2020/06/15 13:57:45 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2016 The NetBSD Foundation, Inc. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__RCSID("$NetBSD: t_wait_noproc.c,v 1.6 2020/06/15 13:57:45 christos Exp $"); 31 32#include <sys/wait.h> 33#include <sys/resource.h> 34 35#include <errno.h> 36#include <stdio.h> 37 38#include <atf-c.h> 39 40#ifndef TWAIT_OPTION 41#define TWAIT_OPTION 0 42#endif 43 44#if TWAIT_OPTION == 0 45ATF_TC(wait); 46ATF_TC_HEAD(wait, tc) 47{ 48 atf_tc_set_md_var(tc, "descr", 49 "Test that wait(2) returns ECHILD for no child"); 50} 51 52ATF_TC_BODY(wait, tc) 53{ 54 ATF_REQUIRE_ERRNO(ECHILD, wait(NULL) == -1); 55} 56#endif 57 58ATF_TC(waitpid); 59ATF_TC_HEAD(waitpid, tc) 60{ 61 atf_tc_set_md_var(tc, "descr", 62 "Test that waitpid(2) returns ECHILD for WAIT_ANY and option %s", 63 ___STRING(TWAIT_OPTION)); 64} 65 66ATF_TC_BODY(waitpid, tc) 67{ 68 ATF_REQUIRE_ERRNO(ECHILD, waitpid(WAIT_ANY, NULL, TWAIT_OPTION) == -1); 69} 70 71ATF_TC(waitid); 72ATF_TC_HEAD(waitid, tc) 73{ 74 atf_tc_set_md_var(tc, "descr", 75 "Test that waitid(2) returns ECHILD for P_ALL and option %s", 76 ___STRING(TWAIT_OPTION)); 77} 78 79ATF_TC_BODY(waitid, tc) 80{ 81 ATF_REQUIRE_ERRNO(ECHILD, 82 waitid(P_ALL, 0, NULL, 83 WTRAPPED | WEXITED | TWAIT_OPTION) == -1); 84} 85 86ATF_TC(wait3); 87ATF_TC_HEAD(wait3, tc) 88{ 89 atf_tc_set_md_var(tc, "descr", 90 "Test that wait3(2) returns ECHILD for no child"); 91} 92 93ATF_TC_BODY(wait3, tc) 94{ 95 ATF_REQUIRE_ERRNO(ECHILD, wait3(NULL, TWAIT_OPTION, NULL) == -1); 96} 97 98ATF_TC(wait4); 99ATF_TC_HEAD(wait4, tc) 100{ 101 atf_tc_set_md_var(tc, "descr", 102 "Test that wait4(2) returns ECHILD for WAIT_ANY and option %s", 103 ___STRING(TWAIT_OPTION)); 104} 105 106ATF_TC_BODY(wait4, tc) 107{ 108 ATF_REQUIRE_ERRNO(ECHILD, 109 wait4(WAIT_ANY, NULL, TWAIT_OPTION, NULL) == -1); 110} 111 112ATF_TC(wait6); 113ATF_TC_HEAD(wait6, tc) 114{ 115 atf_tc_set_md_var(tc, "descr", 116 "Test that wait6(2) returns ECHILD for P_ALL and option %s", 117 ___STRING(TWAIT_OPTION)); 118} 119 120ATF_TC_BODY(wait6, tc) 121{ 122 ATF_REQUIRE_ERRNO(ECHILD, 123 wait6(P_ALL, 0, NULL, 124 WTRAPPED | WEXITED | TWAIT_OPTION, NULL, NULL) == -1); 125} 126 127/* 128 * Generator of valid combinations of options 129 * Usage: i = 0; while ((o = get_options_wait6(i++)) != -1) {} 130 */ 131static int 132get_options6(size_t pos) 133{ 134 int rv = 0; 135 size_t n; 136 137 /* 138 * waitid(2) must specify at least one of WEXITED, WUNTRACED, 139 * WSTOPPED, WTRAPPED or WCONTINUED. Single option WNOWAIT 140 * isn't valid. 141 */ 142 143 const int matrix[] = { 144 WNOWAIT, /* First in order to exclude it easily */ 145 WEXITED, 146 WUNTRACED, 147 WSTOPPED, /* SUS compatibility, equal to WUNTRACED */ 148 WTRAPPED, 149 WCONTINUED 150 }; 151 152 const size_t M = (1 << __arraycount(matrix)) - 1; 153 154 /* Skip empty and sole WNOWAIT option */ 155 pos+=2; 156 157 if (pos > M) 158 return -1; 159 160 for (n = 0; n < __arraycount(matrix); n++) { 161 if (pos & __BIT(n)) 162 rv |= matrix[n]; 163 } 164 165 return rv; 166} 167 168/* 169 * Generator of valid combinations of options 170 * Usage: i = 0; while ((o = get_options_wait4(i++)) != -1) {} 171 */ 172static int 173get_options4(size_t pos) 174{ 175 int rv = 0; 176 size_t n; 177 178 const int special[] = { 179 0, 180 WALLSIG, 181 WALTSIG, 182 __WALL, /* Linux compatibility, equal to WALLSIG */ 183 __WCLONE /* Linux compatibility, equal to WALTSIG */ 184 }; 185 186 const int matrix[] = { 187 WNOWAIT, 188 WEXITED, 189 WUNTRACED, 190 WSTOPPED, /* SUS compatibility, equal to WUNTRACED */ 191 WTRAPPED, 192 WCONTINUED 193 }; 194 195 const size_t M = (1 << __arraycount(special)) - 1; 196 197 if (pos < __arraycount(special)) 198 return special[pos]; 199 200 pos -= __arraycount(special); 201 202 ++pos; /* Don't start with empty mask */ 203 204 if (pos > M) 205 return -1; 206 207 for (n = 0; n < __arraycount(special); n++) { 208 if (pos & __BIT(n)) 209 rv |= matrix[n]; 210 } 211 212 return rv; 213} 214 215ATF_TC(waitpid_options); 216ATF_TC_HEAD(waitpid_options, tc) 217{ 218 atf_tc_set_md_var(tc, "descr", 219 "Test that waitpid(2) returns ECHILD for WAIT_ANY and valid " 220 "combination of options with%s WNOHANG", 221 TWAIT_OPTION == 0 ? "out" : ""); 222} 223 224ATF_TC_BODY(waitpid_options, tc) 225{ 226 size_t i = 0; 227 int o; 228 229 while((o = get_options4(i++)) != -1) { 230 printf("Testing waitpid(2) with options %x\n", o); 231 232 ATF_REQUIRE_ERRNO(ECHILD, 233 waitpid(WAIT_ANY, NULL, o | TWAIT_OPTION) == -1); 234 } 235} 236 237ATF_TC(waitid_options); 238ATF_TC_HEAD(waitid_options, tc) 239{ 240 atf_tc_set_md_var(tc, "descr", 241 "Test that waitid(2) returns ECHILD for P_ALL and valid " 242 "combination of options with%s WNOHANG", 243 TWAIT_OPTION == 0 ? "out" : ""); 244} 245 246ATF_TC_BODY(waitid_options, tc) 247{ 248 size_t i = 0; 249 int o; 250 251 while((o = get_options6(i++)) != -1) { 252 printf("Testing waitid(2) with options %x\n", o); 253 254 ATF_REQUIRE_ERRNO(ECHILD, 255 waitid(P_ALL, 0, NULL, o | TWAIT_OPTION) == -1); 256 } 257} 258 259ATF_TC(wait3_options); 260ATF_TC_HEAD(wait3_options, tc) 261{ 262 atf_tc_set_md_var(tc, "descr", 263 "Test that wait3(2) returns ECHILD for no child"); 264} 265 266ATF_TC_BODY(wait3_options, tc) 267{ 268 size_t i = 0; 269 int o; 270 271 while((o = get_options4(i++)) != -1) { 272 printf("Testing wait3(2) with options %x\n", o); 273 274 ATF_REQUIRE_ERRNO(ECHILD, 275 wait3(NULL, o | TWAIT_OPTION, NULL) == -1); 276 } 277} 278 279ATF_TC(wait4_options); 280ATF_TC_HEAD(wait4_options, tc) 281{ 282 atf_tc_set_md_var(tc, "descr", 283 "Test that wait4(2) returns ECHILD for WAIT_ANY and option %s", 284 ___STRING(TWAIT_OPTION)); 285} 286 287ATF_TC_BODY(wait4_options, tc) 288{ 289 size_t i = 0; 290 int o; 291 292 while((o = get_options4(i++)) != -1) { 293 printf("Testing wait4(2) with options %x\n", o); 294 295 ATF_REQUIRE_ERRNO(ECHILD, 296 wait4(WAIT_ANY, NULL, o | TWAIT_OPTION, NULL) == -1); 297 } 298} 299 300ATF_TC(wait6_options); 301ATF_TC_HEAD(wait6_options, tc) 302{ 303 atf_tc_set_md_var(tc, "descr", 304 "Test that wait6(2) returns ECHILD for P_ALL and option %s", 305 ___STRING(TWAIT_OPTION)); 306} 307 308ATF_TC_BODY(wait6_options, tc) 309{ 310 size_t i = 0; 311 int o; 312 313 while((o = get_options6(i++)) != -1) { 314 printf("Testing wait6(2) with options %x\n", o); 315 316 ATF_REQUIRE_ERRNO(ECHILD, 317 wait6(P_ALL, 0, NULL, o | TWAIT_OPTION, NULL, NULL) == -1); 318 } 319} 320 321ATF_TP_ADD_TCS(tp) 322{ 323 324#if TWAIT_OPTION == 0 325 ATF_TP_ADD_TC(tp, wait); 326#endif 327 ATF_TP_ADD_TC(tp, waitpid); 328 ATF_TP_ADD_TC(tp, waitid); 329 ATF_TP_ADD_TC(tp, wait3); 330 ATF_TP_ADD_TC(tp, wait4); 331 ATF_TP_ADD_TC(tp, wait6); 332 333 ATF_TP_ADD_TC(tp, waitpid_options); 334 ATF_TP_ADD_TC(tp, waitid_options); 335 ATF_TP_ADD_TC(tp, wait3_options); 336 ATF_TP_ADD_TC(tp, wait4_options); 337 ATF_TP_ADD_TC(tp, wait6_options); 338 339 return atf_no_error(); 340} 341