plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2001 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * NAME |
| 22 | * waitpid11.c |
| 23 | * |
| 24 | * DESCRIPTION |
| 25 | * Tests to see if pid's returned from fork and waitpid are same |
| 26 | * |
| 27 | * ALGORITHM |
| 28 | * Check proper functioning of waitpid with pid = -1 and arg = 0 |
| 29 | * |
| 30 | * USAGE: <for command-line> |
| 31 | * waitpid11 [-c n] [-t] |
| 32 | * where, -c n : Run n copies concurrently. |
| 33 | * -t : Turn on syscall timing. |
| 34 | * |
| 35 | * History |
| 36 | * 07/2001 John George |
| 37 | * -Ported |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 38 | * 04/2002 wjhuie sigset cleanups |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 39 | * |
| 40 | * Restrictions |
| 41 | * None |
| 42 | */ |
| 43 | |
| 44 | #include <sys/types.h> |
| 45 | #include <signal.h> |
| 46 | #include <errno.h> |
| 47 | #include <sys/wait.h> |
| 48 | #include <test.h> |
| 49 | #include <usctest.h> |
| 50 | |
| 51 | #define MAXKIDS 8 |
| 52 | |
| 53 | char *TCID = "waitpid11"; |
| 54 | int TST_TOTAL = 1; |
| 55 | extern int Tst_count; |
| 56 | |
| 57 | int intintr; |
| 58 | void setup(void); |
| 59 | void cleanup(void); |
| 60 | void inthandlr(); |
| 61 | int wait_for_parent(); |
| 62 | int do_exit(); |
| 63 | |
| 64 | int fail; |
| 65 | |
plars | ac85d1c | 2002-06-10 14:52:37 +0000 | [diff] [blame^] | 66 | int main(int ac, char **av) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 67 | { |
| 68 | int lc; /* loop counter */ |
| 69 | char *msg; /* message returned from parse_opts */ |
| 70 | |
| 71 | int kid_count, ret_val, status; |
| 72 | int i, j, k, found, iterations; |
| 73 | int group1, group2; |
| 74 | int fork_kid_pid[MAXKIDS], wait_kid_pid[MAXKIDS]; |
| 75 | int pid; |
| 76 | |
| 77 | /* parse standard options */ |
| 78 | if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != |
| 79 | (char *)NULL) { |
| 80 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| 81 | tst_exit(); |
| 82 | /*NOTREACHED*/ |
| 83 | } |
| 84 | |
| 85 | setup(); |
| 86 | |
| 87 | /* check for looping state if -i option is given */ |
| 88 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 89 | |
| 90 | /* reset Tst_count in case we are looping */ |
| 91 | Tst_count = 0; |
| 92 | |
| 93 | /* |
| 94 | * Need to have test run from child as test driver causes |
| 95 | * test to be a session leader and setpgrp fails. |
| 96 | */ |
| 97 | |
| 98 | if (pid = fork()) { |
| 99 | fail = 0; |
| 100 | waitpid(pid, &status, 0); |
| 101 | if (WEXITSTATUS(status) != 0) { |
| 102 | tst_resm(TFAIL, "child returned bad status"); |
| 103 | fail = 1; |
| 104 | } |
| 105 | if (fail) { |
| 106 | tst_resm(TINFO, "%s FAILED", TCID); |
| 107 | } else { |
| 108 | tst_resm(TINFO, "%s PASSED", TCID); |
| 109 | } |
| 110 | cleanup(); |
| 111 | /*NOTREACHED*/ |
| 112 | } else if (pid < 0 ) { |
| 113 | tst_brkm(TBROK, cleanup, "fork failed"); |
| 114 | /*NOTREACHED*/ |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Set up to catch SIGINT. The kids will wait till a SIGINT |
| 119 | * has been received before they proceed. |
| 120 | */ |
plars | ac85d1c | 2002-06-10 14:52:37 +0000 | [diff] [blame^] | 121 | if ((sig_t)signal(SIGINT, inthandlr) == SIG_ERR) { |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 122 | tst_resm(TFAIL, "signal SIGINT failed, errno = %d", |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 123 | errno); |
| 124 | tst_exit(); |
| 125 | /*NOTREACHED*/ |
| 126 | } |
| 127 | |
| 128 | group1 = getpgrp(); |
| 129 | |
| 130 | for (kid_count = 0; kid_count < MAXKIDS; kid_count++) { |
| 131 | if (kid_count == (MAXKIDS / 2)) { |
| 132 | group2 = setpgrp(); |
| 133 | } |
| 134 | |
| 135 | intintr = 0; |
| 136 | ret_val = fork(); |
| 137 | if (ret_val == 0) { |
| 138 | do_exit(); |
| 139 | /*NOTREACHED*/ |
| 140 | } |
| 141 | |
| 142 | if (ret_val < 0) { |
| 143 | tst_resm(TFAIL, "Fork kid %d failed. errno = " |
| 144 | "%d", kid_count, errno); |
| 145 | tst_exit(); |
| 146 | /*NOTREACHED*/ |
| 147 | } |
| 148 | |
| 149 | /* parent */ |
| 150 | fork_kid_pid[kid_count] = ret_val; |
| 151 | } |
| 152 | |
| 153 | /* Now send all the kids a SIGINT to tell them to proceed */ |
| 154 | for (i = 0; i < MAXKIDS; i++) { |
| 155 | if (kill(fork_kid_pid[i], SIGINT) < 0) { |
| 156 | tst_resm(TFAIL, "Kill of child %d failed, " |
| 157 | "errno = %d", i, errno); |
| 158 | tst_exit(); |
| 159 | /*NOTREACHED*/ |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Wait till all kids have terminated. Stash away their |
| 165 | * pid's in an array. |
| 166 | */ |
| 167 | kid_count = 0; |
| 168 | errno = 0; |
| 169 | while (((ret_val = waitpid(0, &status, 0)) != -1) || |
| 170 | (errno == EINTR)) { |
| 171 | if (ret_val == -1) { |
| 172 | continue; |
| 173 | } |
| 174 | |
| 175 | if (!WIFEXITED(status)) { |
| 176 | tst_resm(TFAIL, "Child %d did not exit " |
| 177 | "normally", ret_val); |
| 178 | fail = 1; |
| 179 | } else { |
| 180 | if (WEXITSTATUS(status) != 3) { |
| 181 | tst_resm(TFAIL, "Child %d exited with " |
| 182 | "wrong status", ret_val); |
| 183 | tst_resm(TFAIL, "Expected 3 got %d", |
| 184 | WEXITSTATUS(status)); |
| 185 | fail = 1; |
| 186 | } |
| 187 | } |
| 188 | wait_kid_pid[kid_count++] = ret_val; |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * Check that for every entry in the fork_kid_pid array, |
| 193 | * there is a matching pid in the wait_kid_pid array. If |
| 194 | * not, it's an error. |
| 195 | */ |
| 196 | for (i = 0; i < kid_count; i++) { |
| 197 | found = 0; |
| 198 | for (j = (MAXKIDS / 2); j < MAXKIDS; j++) { |
| 199 | if (fork_kid_pid[j] == wait_kid_pid[i]) { |
| 200 | found = 1; |
| 201 | break; |
| 202 | } |
| 203 | } |
| 204 | if (!found) { |
| 205 | tst_resm(TFAIL, "Did not find a wait_kid_pid " |
| 206 | "for the fork_kid_pid of %d", |
| 207 | fork_kid_pid[j]); |
| 208 | for (k = 0; k < MAXKIDS; k++) { |
| 209 | tst_resm(TFAIL, "fork_kid_pid[%d] = " |
| 210 | "%d", k, fork_kid_pid[k]); |
| 211 | } |
| 212 | for (k = 0; k < kid_count; k++) { |
| 213 | tst_resm(TFAIL, "wait_kid_pid[%d] = " |
| 214 | "%d", k, wait_kid_pid[k]); |
| 215 | } |
| 216 | fail = 1; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | if (kid_count != (MAXKIDS / 2)) { |
| 221 | tst_resm(TFAIL, "Wrong number of children waited on " |
| 222 | "for pid = 0"); |
| 223 | tst_resm(TFAIL, "Expected 4 got %d", kid_count); |
| 224 | fail = 1; |
| 225 | } |
| 226 | |
| 227 | /* Make sure can pickup children in a diff. process group */ |
| 228 | |
| 229 | kid_count = 0; |
| 230 | errno = 0; |
| 231 | while (((ret_val = waitpid(-(group1), &status, 0)) != -1) || |
| 232 | (errno == EINTR)) { |
| 233 | if (ret_val == -1) { |
| 234 | continue; |
| 235 | } |
| 236 | if (!WIFEXITED(status)) { |
| 237 | tst_resm(TFAIL, "Child %d did not exit " |
| 238 | "normally", ret_val); |
| 239 | fail = 1; |
| 240 | } else { |
| 241 | if (WEXITSTATUS(status) != 3) { |
| 242 | tst_resm(TFAIL, "Child %d exited with " |
| 243 | "wrong status", ret_val); |
| 244 | tst_resm(TFAIL, "Expected 3 got %d", |
| 245 | WEXITSTATUS(status)); |
| 246 | fail = 1; |
| 247 | } |
| 248 | } |
| 249 | wait_kid_pid[kid_count++] = ret_val; |
| 250 | } |
| 251 | |
| 252 | /* |
| 253 | * Check that for every entry in the fork_kid_pid array, |
| 254 | * there is a matching pid in the wait_kid_pid array. If |
| 255 | * not, it's an error. |
| 256 | */ |
| 257 | for (i = 0; i < kid_count; i++) { |
| 258 | found = 0; |
| 259 | for (j = 0; j < (MAXKIDS / 2); j++) { |
| 260 | if (fork_kid_pid[j] == wait_kid_pid[i]) { |
| 261 | found = 1; |
| 262 | break; |
| 263 | } |
| 264 | } |
| 265 | if (!found) { |
| 266 | tst_resm(TFAIL, "Did not find a wait_kid_pid " |
| 267 | "for the fork_kid_pid of %d", |
| 268 | fork_kid_pid[j]); |
| 269 | for (k = 0; k < MAXKIDS; k++) { |
| 270 | tst_resm(TFAIL, "fork_kid_pid[%d] = " |
| 271 | "%d", k, fork_kid_pid[k]); |
| 272 | } |
| 273 | for (k = 0; k < kid_count; k++) { |
| 274 | tst_resm(TFAIL, "wait_kid_pid[%d] = " |
| 275 | "%d", k, wait_kid_pid[k]); |
| 276 | } |
| 277 | fail = 1; |
| 278 | } |
| 279 | } |
| 280 | if (kid_count != (MAXKIDS / 2)) { |
| 281 | tst_resm(TFAIL, "Wrong number of children waited on " |
| 282 | "for pid = 0"); |
| 283 | tst_resm(TFAIL, "Expected 4 got %d"); |
| 284 | fail = 1; |
| 285 | } |
| 286 | |
| 287 | if (fail) { |
| 288 | tst_resm(TINFO, "Test FAILED"); |
| 289 | exit(1); |
| 290 | } else { |
| 291 | tst_resm(TINFO, "Test PASSED"); |
| 292 | exit(0); |
| 293 | } |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | /* |
| 298 | * setup() |
| 299 | * performs all ONE TIME setup for this test |
| 300 | */ |
| 301 | void |
| 302 | setup(void) |
| 303 | { |
| 304 | /* Pause if that option was specified |
| 305 | * TEST_PAUSE contains the code to fork the test with the -c option. |
| 306 | */ |
| 307 | TEST_PAUSE; |
| 308 | } |
| 309 | |
| 310 | /* |
| 311 | * cleanup() |
| 312 | * performs all ONE TIME cleanup for this test at |
| 313 | * completion or premature exit |
| 314 | */ |
| 315 | void |
| 316 | cleanup(void) |
| 317 | { |
| 318 | /* |
| 319 | * print timing stats if that option was specified. |
| 320 | * print errno log if that option was specified. |
| 321 | */ |
| 322 | TEST_CLEANUP; |
| 323 | |
| 324 | /* exit with return code appropriate for results */ |
| 325 | tst_exit(); |
| 326 | /*NOTREACHED*/ |
| 327 | } |
| 328 | void |
| 329 | inthandlr() |
| 330 | { |
| 331 | intintr++; |
| 332 | } |
| 333 | |
| 334 | int |
| 335 | wait_for_parent() |
| 336 | { |
| 337 | int testvar; |
| 338 | |
| 339 | while (!intintr) { |
| 340 | testvar = 0; |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | int |
| 345 | do_exit() |
| 346 | { |
| 347 | wait_for_parent(); |
| 348 | exit(3); |
| 349 | } |