1 /* $NetBSD: t_ptrace_clone_wait.h,v 1.4 2025/05/02 02:24:32 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2016, 2017, 2018, 2019, 2020 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 static void 30 clone_body(int flags, bool trackfork, bool trackvfork, 31 bool trackvforkdone) 32 { 33 const int exitval = 5; 34 const int exitval2 = 15; 35 const int sigval = SIGSTOP; 36 pid_t child, child2 = 0, wpid; 37 #if defined(TWAIT_HAVE_STATUS) 38 int status; 39 #endif 40 ptrace_state_t state; 41 const int slen = sizeof(state); 42 ptrace_event_t event; 43 const int elen = sizeof(event); 44 45 const size_t stack_size = 1024 * 1024; 46 void *stack, *stack_base; 47 48 stack = malloc(stack_size); 49 ATF_REQUIRE(stack != NULL); 50 51 #ifdef __MACHINE_STACK_GROWS_UP 52 stack_base = stack; 53 #else 54 stack_base = (char *)stack + stack_size; 55 #endif 56 57 DPRINTF("Before forking process PID=%d\n", getpid()); 58 SYSCALL_REQUIRE((child = fork()) != -1); 59 if (child == 0) { 60 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 61 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 62 63 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 64 FORKEE_ASSERT(raise(sigval) == 0); 65 66 SYSCALL_REQUIRE((child2 = __clone(clone_func, stack_base, 67 flags|SIGCHLD, (void *)(intptr_t)exitval2)) != -1); 68 69 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), 70 child2); 71 72 // XXX WALLSIG? 73 FORKEE_REQUIRE_SUCCESS 74 (wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2); 75 76 forkee_status_exited(status, exitval2); 77 78 DPRINTF("Before exiting of the child process\n"); 79 _exit(exitval); 80 } 81 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 82 83 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 84 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 85 86 validate_status_stopped(status, sigval); 87 88 DPRINTF("Set 0%s%s%s in EVENT_MASK for the child %d\n", 89 trackfork ? "|PTRACE_FORK" : "", 90 trackvfork ? "|PTRACE_VFORK" : "", 91 trackvforkdone ? "|PTRACE_VFORK_DONE" : "", child); 92 event.pe_set_event = 0; 93 if (trackfork) 94 event.pe_set_event |= PTRACE_FORK; 95 if (trackvfork) 96 event.pe_set_event |= PTRACE_VFORK; 97 if (trackvforkdone) 98 event.pe_set_event |= PTRACE_VFORK_DONE; 99 SYSCALL_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); 100 101 DPRINTF("Before resuming the child process where it left off and " 102 "without signal to be sent\n"); 103 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 104 105 #if defined(TWAIT_HAVE_PID) 106 if ((trackfork && !(flags & CLONE_VFORK)) || 107 (trackvfork && (flags & CLONE_VFORK))) { 108 DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME, 109 child); 110 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), 111 child); 112 113 validate_status_stopped(status, SIGTRAP); 114 115 SYSCALL_REQUIRE( 116 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); 117 if (trackfork && !(flags & CLONE_VFORK)) { 118 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_FORK, 119 PTRACE_FORK); 120 } 121 if (trackvfork && (flags & CLONE_VFORK)) { 122 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_VFORK, 123 PTRACE_VFORK); 124 } 125 126 child2 = state.pe_other_pid; 127 DPRINTF("Reported ptrace event with forkee %d\n", child2); 128 129 DPRINTF("Before calling %s() for the forkee %d of the child " 130 "%d\n", TWAIT_FNAME, child2, child); 131 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0), 132 child2); 133 134 validate_status_stopped(status, SIGTRAP); 135 136 SYSCALL_REQUIRE( 137 ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1); 138 if (trackfork && !(flags & CLONE_VFORK)) { 139 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_FORK, 140 PTRACE_FORK); 141 } 142 if (trackvfork && (flags & CLONE_VFORK)) { 143 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_VFORK, 144 PTRACE_VFORK); 145 } 146 147 ATF_REQUIRE_EQ(state.pe_other_pid, child); 148 149 DPRINTF("Before resuming the forkee process where it left off " 150 "and without signal to be sent\n"); 151 SYSCALL_REQUIRE( 152 ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1); 153 154 DPRINTF("Before resuming the child process where it left off " 155 "and without signal to be sent\n"); 156 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 157 } 158 #endif 159 160 if (trackvforkdone && (flags & CLONE_VFORK)) { 161 DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME, 162 child); 163 TWAIT_REQUIRE_SUCCESS( 164 wpid = TWAIT_GENERIC(child, &status, 0), child); 165 166 validate_status_stopped(status, SIGTRAP); 167 168 SYSCALL_REQUIRE( 169 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); 170 ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE); 171 172 child2 = state.pe_other_pid; 173 DPRINTF("Reported PTRACE_VFORK_DONE event with forkee %d\n", 174 child2); 175 176 DPRINTF("Before resuming the child process where it left off " 177 "and without signal to be sent\n"); 178 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 179 } 180 181 #if defined(TWAIT_HAVE_PID) 182 if ((trackfork && !(flags & CLONE_VFORK)) || 183 (trackvfork && (flags & CLONE_VFORK))) { 184 DPRINTF("Before calling %s() for the forkee - expected exited" 185 "\n", TWAIT_FNAME); 186 TWAIT_REQUIRE_SUCCESS( 187 wpid = TWAIT_GENERIC(child2, &status, 0), child2); 188 189 validate_status_exited(status, exitval2); 190 191 DPRINTF("Before calling %s() for the forkee - expected no " 192 "process\n", TWAIT_FNAME); 193 TWAIT_REQUIRE_FAILURE(ECHILD, 194 wpid = TWAIT_GENERIC(child2, &status, 0)); 195 } 196 #endif 197 198 DPRINTF("Before calling %s() for the child - expected stopped " 199 "SIGCHLD\n", TWAIT_FNAME); 200 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 201 202 validate_status_stopped(status, SIGCHLD); 203 204 DPRINTF("Before resuming the child process where it left off and " 205 "without signal to be sent\n"); 206 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 207 208 DPRINTF("Before calling %s() for the child - expected exited\n", 209 TWAIT_FNAME); 210 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 211 212 validate_status_exited(status, exitval); 213 214 DPRINTF("Before calling %s() for the child - expected no process\n", 215 TWAIT_FNAME); 216 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 217 } 218 219 #define CLONE_TEST(name,flags,tfork,tvfork,tvforkdone) \ 220 ATF_TC(name); \ 221 ATF_TC_HEAD(name, tc) \ 222 { \ 223 atf_tc_set_md_var(tc, "descr", "Verify clone(%s) " \ 224 "called with 0%s%s%s in EVENT_MASK", \ 225 #flags, \ 226 tfork ? "|PTRACE_FORK" : "", \ 227 tvfork ? "|PTRACE_VFORK" : "", \ 228 tvforkdone ? "|PTRACE_VFORK_DONE" : ""); \ 229 } \ 230 \ 231 ATF_TC_BODY(name, tc) \ 232 { \ 233 \ 234 clone_body(flags, tfork, tvfork, tvforkdone); \ 235 } 236 237 CLONE_TEST(clone1, 0, false, false, false) 238 #if defined(TWAIT_HAVE_PID) 239 CLONE_TEST(clone2, 0, true, false, false) 240 CLONE_TEST(clone3, 0, false, true, false) 241 CLONE_TEST(clone4, 0, true, true, false) 242 #endif 243 CLONE_TEST(clone5, 0, false, false, true) 244 #if defined(TWAIT_HAVE_PID) 245 CLONE_TEST(clone6, 0, true, false, true) 246 CLONE_TEST(clone7, 0, false, true, true) 247 CLONE_TEST(clone8, 0, true, true, true) 248 #endif 249 250 CLONE_TEST(clone_vm1, CLONE_VM, false, false, false) 251 #if defined(TWAIT_HAVE_PID) 252 CLONE_TEST(clone_vm2, CLONE_VM, true, false, false) 253 CLONE_TEST(clone_vm3, CLONE_VM, false, true, false) 254 CLONE_TEST(clone_vm4, CLONE_VM, true, true, false) 255 #endif 256 CLONE_TEST(clone_vm5, CLONE_VM, false, false, true) 257 #if defined(TWAIT_HAVE_PID) 258 CLONE_TEST(clone_vm6, CLONE_VM, true, false, true) 259 CLONE_TEST(clone_vm7, CLONE_VM, false, true, true) 260 CLONE_TEST(clone_vm8, CLONE_VM, true, true, true) 261 #endif 262 263 CLONE_TEST(clone_fs1, CLONE_FS, false, false, false) 264 #if defined(TWAIT_HAVE_PID) 265 CLONE_TEST(clone_fs2, CLONE_FS, true, false, false) 266 CLONE_TEST(clone_fs3, CLONE_FS, false, true, false) 267 CLONE_TEST(clone_fs4, CLONE_FS, true, true, false) 268 #endif 269 CLONE_TEST(clone_fs5, CLONE_FS, false, false, true) 270 #if defined(TWAIT_HAVE_PID) 271 CLONE_TEST(clone_fs6, CLONE_FS, true, false, true) 272 CLONE_TEST(clone_fs7, CLONE_FS, false, true, true) 273 CLONE_TEST(clone_fs8, CLONE_FS, true, true, true) 274 #endif 275 276 CLONE_TEST(clone_files1, CLONE_FILES, false, false, false) 277 #if defined(TWAIT_HAVE_PID) 278 CLONE_TEST(clone_files2, CLONE_FILES, true, false, false) 279 CLONE_TEST(clone_files3, CLONE_FILES, false, true, false) 280 CLONE_TEST(clone_files4, CLONE_FILES, true, true, false) 281 #endif 282 CLONE_TEST(clone_files5, CLONE_FILES, false, false, true) 283 #if defined(TWAIT_HAVE_PID) 284 CLONE_TEST(clone_files6, CLONE_FILES, true, false, true) 285 CLONE_TEST(clone_files7, CLONE_FILES, false, true, true) 286 CLONE_TEST(clone_files8, CLONE_FILES, true, true, true) 287 #endif 288 289 //CLONE_TEST(clone_sighand1, CLONE_SIGHAND, false, false, false) 290 #if defined(TWAIT_HAVE_PID) 291 //CLONE_TEST(clone_sighand2, CLONE_SIGHAND, true, false, false) 292 //CLONE_TEST(clone_sighand3, CLONE_SIGHAND, false, true, false) 293 //CLONE_TEST(clone_sighand4, CLONE_SIGHAND, true, true, false) 294 #endif 295 //CLONE_TEST(clone_sighand5, CLONE_SIGHAND, false, false, true) 296 #if defined(TWAIT_HAVE_PID) 297 //CLONE_TEST(clone_sighand6, CLONE_SIGHAND, true, false, true) 298 //CLONE_TEST(clone_sighand7, CLONE_SIGHAND, false, true, true) 299 //CLONE_TEST(clone_sighand8, CLONE_SIGHAND, true, true, true) 300 #endif 301 302 CLONE_TEST(clone_vfork1, CLONE_VFORK, false, false, false) 303 #if defined(TWAIT_HAVE_PID) 304 CLONE_TEST(clone_vfork2, CLONE_VFORK, true, false, false) 305 CLONE_TEST(clone_vfork3, CLONE_VFORK, false, true, false) 306 CLONE_TEST(clone_vfork4, CLONE_VFORK, true, true, false) 307 #endif 308 CLONE_TEST(clone_vfork5, CLONE_VFORK, false, false, true) 309 #if defined(TWAIT_HAVE_PID) 310 CLONE_TEST(clone_vfork6, CLONE_VFORK, true, false, true) 311 CLONE_TEST(clone_vfork7, CLONE_VFORK, false, true, true) 312 CLONE_TEST(clone_vfork8, CLONE_VFORK, true, true, true) 313 #endif 314 315 /// ---------------------------------------------------------------------------- 316 317 #if defined(TWAIT_HAVE_PID) 318 static void 319 clone_body2(int flags, bool masked, bool ignored) 320 { 321 const int exitval = 5; 322 const int exitval2 = 15; 323 const int sigval = SIGSTOP; 324 pid_t child, child2 = 0, wpid; 325 #if defined(TWAIT_HAVE_STATUS) 326 int status; 327 #endif 328 ptrace_state_t state; 329 const int slen = sizeof(state); 330 ptrace_event_t event; 331 const int elen = sizeof(event); 332 struct sigaction sa; 333 struct ptrace_siginfo info; 334 sigset_t intmask; 335 struct kinfo_proc2 kp; 336 size_t len = sizeof(kp); 337 338 int name[6]; 339 const size_t namelen = __arraycount(name); 340 ki_sigset_t kp_sigmask; 341 ki_sigset_t kp_sigignore; 342 343 const size_t stack_size = 1024 * 1024; 344 void *stack, *stack_base; 345 346 stack = malloc(stack_size); 347 ATF_REQUIRE(stack != NULL); 348 349 #ifdef __MACHINE_STACK_GROWS_UP 350 stack_base = stack; 351 #else 352 stack_base = (char *)stack + stack_size; 353 #endif 354 355 SYSCALL_REQUIRE((child = fork()) != -1); 356 if (child == 0) { 357 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 358 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 359 360 if (masked) { 361 sigemptyset(&intmask); 362 sigaddset(&intmask, SIGTRAP); 363 sigprocmask(SIG_BLOCK, &intmask, NULL); 364 } 365 366 if (ignored) { 367 memset(&sa, 0, sizeof(sa)); 368 sa.sa_handler = SIG_IGN; 369 sigemptyset(&sa.sa_mask); 370 FORKEE_ASSERT(sigaction(SIGTRAP, &sa, NULL) != -1); 371 } 372 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 373 FORKEE_ASSERT(raise(sigval) == 0); 374 375 DPRINTF("Before forking process PID=%d flags=%#x\n", getpid(), 376 flags); 377 SYSCALL_REQUIRE((child2 = __clone(clone_func, stack_base, 378 flags|SIGCHLD, (void *)(intptr_t)exitval2)) != -1); 379 380 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), 381 child2); 382 383 // XXX WALLSIG? 384 FORKEE_REQUIRE_SUCCESS 385 (wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2); 386 387 forkee_status_exited(status, exitval2); 388 389 DPRINTF("Before exiting of the child process\n"); 390 _exit(exitval); 391 } 392 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 393 394 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 395 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 396 397 validate_status_stopped(status, sigval); 398 399 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 400 SYSCALL_REQUIRE( 401 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 402 403 DPRINTF("Before checking siginfo_t\n"); 404 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 405 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 406 407 name[0] = CTL_KERN, 408 name[1] = KERN_PROC2, 409 name[2] = KERN_PROC_PID; 410 name[3] = child; 411 name[4] = sizeof(kp); 412 name[5] = 1; 413 414 FORKEE_ASSERT_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 415 416 kp_sigmask = kp.p_sigmask; 417 kp_sigignore = kp.p_sigignore; 418 419 DPRINTF("Set PTRACE_FORK | PTRACE_VFORK | PTRACE_VFORK_DONE in " 420 "EVENT_MASK for the child %d\n", child); 421 event.pe_set_event = PTRACE_FORK | PTRACE_VFORK | PTRACE_VFORK_DONE; 422 SYSCALL_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); 423 424 DPRINTF("Before resuming the child process where it left off and " 425 "without signal to be sent\n"); 426 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 427 428 DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME, 429 child); 430 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), 431 child); 432 433 validate_status_stopped(status, SIGTRAP); 434 435 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 436 437 if (masked) { 438 DPRINTF("kp_sigmask=" 439 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 440 PRIx32 "\n", 441 kp_sigmask.__bits[0], kp_sigmask.__bits[1], 442 kp_sigmask.__bits[2], kp_sigmask.__bits[3]); 443 444 DPRINTF("kp.p_sigmask=" 445 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 446 PRIx32 "\n", 447 kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1], 448 kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]); 449 450 ATF_REQUIRE(sigismember((sigset_t *)&kp.p_sigmask, 451 SIGTRAP)); 452 } 453 454 if (ignored) { 455 DPRINTF("kp_sigignore=" 456 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 457 PRIx32 "\n", 458 kp_sigignore.__bits[0], kp_sigignore.__bits[1], 459 kp_sigignore.__bits[2], kp_sigignore.__bits[3]); 460 461 DPRINTF("kp.p_sigignore=" 462 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 463 PRIx32 "\n", 464 kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1], 465 kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]); 466 467 ATF_REQUIRE(sigismember((sigset_t *)&kp.p_sigignore, 468 SIGTRAP)); 469 } 470 471 SYSCALL_REQUIRE( 472 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); 473 DPRINTF("state.pe_report_event=%#x pid=%d\n", state.pe_report_event, 474 child2); 475 if (!(flags & CLONE_VFORK)) { 476 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_FORK, 477 PTRACE_FORK); 478 } else { 479 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_VFORK, 480 PTRACE_VFORK); 481 } 482 483 child2 = state.pe_other_pid; 484 DPRINTF("Reported ptrace event with forkee %d\n", child2); 485 486 DPRINTF("Before calling %s() for the forkee %d of the child " 487 "%d\n", TWAIT_FNAME, child2, child); 488 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0), 489 child2); 490 491 validate_status_stopped(status, SIGTRAP); 492 493 name[3] = child2; 494 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 495 496 if (masked) { 497 DPRINTF("kp_sigmask=" 498 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 499 PRIx32 "\n", 500 kp_sigmask.__bits[0], kp_sigmask.__bits[1], 501 kp_sigmask.__bits[2], kp_sigmask.__bits[3]); 502 503 DPRINTF("kp.p_sigmask=" 504 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 505 PRIx32 "\n", 506 kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1], 507 kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]); 508 509 ATF_REQUIRE(sigismember((sigset_t *)&kp.p_sigmask, 510 SIGTRAP)); 511 } 512 513 if (ignored) { 514 DPRINTF("kp_sigignore=" 515 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 516 PRIx32 "\n", 517 kp_sigignore.__bits[0], kp_sigignore.__bits[1], 518 kp_sigignore.__bits[2], kp_sigignore.__bits[3]); 519 520 DPRINTF("kp.p_sigignore=" 521 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 522 PRIx32 "\n", 523 kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1], 524 kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]); 525 526 ATF_REQUIRE(sigismember((sigset_t *)&kp.p_sigignore, 527 SIGTRAP)); 528 } 529 530 SYSCALL_REQUIRE( 531 ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1); 532 if (!(flags & CLONE_VFORK)) { 533 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_FORK, 534 PTRACE_FORK); 535 } else { 536 ATF_REQUIRE_EQ(state.pe_report_event & PTRACE_VFORK, 537 PTRACE_VFORK); 538 } 539 540 ATF_REQUIRE_EQ(state.pe_other_pid, child); 541 542 DPRINTF("Before resuming the forkee process where it left off " 543 "and without signal to be sent\n"); 544 SYSCALL_REQUIRE( 545 ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1); 546 547 DPRINTF("Before resuming the child process where it left off " 548 "and without signal to be sent\n"); 549 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 550 551 if (flags & CLONE_VFORK) { 552 DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME, 553 child); 554 TWAIT_REQUIRE_SUCCESS( 555 wpid = TWAIT_GENERIC(child, &status, 0), child); 556 557 validate_status_stopped(status, SIGTRAP); 558 559 name[3] = child; 560 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 561 562 /* 563 * SIGCHLD is now pending in the signal queue and 564 * the kernel presents it to userland as a masked signal. 565 */ 566 sigdelset((sigset_t *)&kp.p_sigmask, SIGCHLD); 567 568 if (masked) { 569 DPRINTF("kp_sigmask=" 570 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 571 PRIx32 "\n", 572 kp_sigmask.__bits[0], kp_sigmask.__bits[1], 573 kp_sigmask.__bits[2], kp_sigmask.__bits[3]); 574 575 DPRINTF("kp.p_sigmask=" 576 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 577 PRIx32 "\n", 578 kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1], 579 kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]); 580 581 ATF_REQUIRE(!memcmp(&kp_sigmask, &kp.p_sigmask, 582 sizeof(kp_sigmask))); 583 } 584 585 if (ignored) { 586 DPRINTF("kp_sigignore=" 587 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 588 PRIx32 "\n", 589 kp_sigignore.__bits[0], kp_sigignore.__bits[1], 590 kp_sigignore.__bits[2], kp_sigignore.__bits[3]); 591 592 DPRINTF("kp.p_sigignore=" 593 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 594 PRIx32 "\n", 595 kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1], 596 kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]); 597 598 ATF_REQUIRE(!memcmp(&kp_sigignore, &kp.p_sigignore, 599 sizeof(kp_sigignore))); 600 } 601 602 SYSCALL_REQUIRE( 603 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); 604 ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE); 605 606 child2 = state.pe_other_pid; 607 DPRINTF("Reported PTRACE_VFORK_DONE event with forkee %d\n", 608 child2); 609 610 DPRINTF("Before resuming the child process where it left off " 611 "and without signal to be sent\n"); 612 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 613 } 614 615 DPRINTF("Before calling %s() for the forkee - expected exited" 616 "\n", TWAIT_FNAME); 617 TWAIT_REQUIRE_SUCCESS( 618 wpid = TWAIT_GENERIC(child2, &status, 0), child2); 619 620 validate_status_exited(status, exitval2); 621 622 DPRINTF("Before calling %s() for the forkee - expected no " 623 "process\n", TWAIT_FNAME); 624 TWAIT_REQUIRE_FAILURE(ECHILD, 625 wpid = TWAIT_GENERIC(child2, &status, 0)); 626 627 DPRINTF("Before calling %s() for the child - expected stopped " 628 "SIGCHLD\n", TWAIT_FNAME); 629 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 630 631 validate_status_stopped(status, SIGCHLD); 632 633 DPRINTF("Before resuming the child process where it left off and " 634 "without signal to be sent\n"); 635 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 636 637 DPRINTF("Before calling %s() for the child - expected exited\n", 638 TWAIT_FNAME); 639 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 640 641 validate_status_exited(status, exitval); 642 643 DPRINTF("Before calling %s() for the child - expected no process\n", 644 TWAIT_FNAME); 645 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 646 } 647 648 #define CLONE_TEST2(name,flags,masked,ignored) \ 649 ATF_TC(name); \ 650 ATF_TC_HEAD(name, tc) \ 651 { \ 652 atf_tc_set_md_var(tc, "descr", "Verify that clone(%s) is caught"\ 653 " regardless of signal %s%s", \ 654 #flags, masked ? "masked" : "", ignored ? "ignored" : ""); \ 655 } \ 656 \ 657 ATF_TC_BODY(name, tc) \ 658 { \ 659 \ 660 clone_body2(flags, masked, ignored); \ 661 } 662 663 CLONE_TEST2(clone_signalignored, 0, true, false) 664 CLONE_TEST2(clone_signalmasked, 0, false, true) 665 CLONE_TEST2(clone_vm_signalignored, CLONE_VM, true, false) 666 CLONE_TEST2(clone_vm_signalmasked, CLONE_VM, false, true) 667 CLONE_TEST2(clone_fs_signalignored, CLONE_FS, true, false) 668 CLONE_TEST2(clone_fs_signalmasked, CLONE_FS, false, true) 669 CLONE_TEST2(clone_files_signalignored, CLONE_FILES, true, false) 670 CLONE_TEST2(clone_files_signalmasked, CLONE_FILES, false, true) 671 //CLONE_TEST2(clone_sighand_signalignored, CLONE_SIGHAND, true, false) // XXX 672 //CLONE_TEST2(clone_sighand_signalmasked, CLONE_SIGHAND, false, true) // XXX 673 CLONE_TEST2(clone_vfork_signalignored, CLONE_VFORK, true, false) 674 CLONE_TEST2(clone_vfork_signalmasked, CLONE_VFORK, false, true) 675 #endif 676 677 /// ---------------------------------------------------------------------------- 678 679 #if defined(TWAIT_HAVE_PID) 680 static void 681 traceme_vfork_clone_body(int flags) 682 { 683 const int exitval = 5; 684 const int exitval2 = 15; 685 pid_t child, child2 = 0, wpid; 686 #if defined(TWAIT_HAVE_STATUS) 687 int status; 688 #endif 689 690 const size_t stack_size = 1024 * 1024; 691 void *stack, *stack_base; 692 693 stack = malloc(stack_size); 694 ATF_REQUIRE(stack != NULL); 695 696 #ifdef __MACHINE_STACK_GROWS_UP 697 stack_base = stack; 698 #else 699 stack_base = (char *)stack + stack_size; 700 #endif 701 702 SYSCALL_REQUIRE((child = vfork()) != -1); 703 if (child == 0) { 704 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 705 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 706 707 DPRINTF("Before forking process PID=%d flags=%#x\n", getpid(), 708 flags); 709 SYSCALL_REQUIRE((child2 = __clone(clone_func, stack_base, 710 flags|SIGCHLD, (void *)(intptr_t)exitval2)) != -1); 711 712 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), 713 child2); 714 715 // XXX WALLSIG? 716 FORKEE_REQUIRE_SUCCESS 717 (wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2); 718 719 forkee_status_exited(status, exitval2); 720 721 DPRINTF("Before exiting of the child process\n"); 722 _exit(exitval); 723 } 724 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 725 726 DPRINTF("Before calling %s() for the child - expected exited\n", 727 TWAIT_FNAME); 728 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 729 730 validate_status_exited(status, exitval); 731 732 DPRINTF("Before calling %s() for the child - expected no process\n", 733 TWAIT_FNAME); 734 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 735 } 736 737 #define TRACEME_VFORK_CLONE_TEST(name,flags) \ 738 ATF_TC(name); \ 739 ATF_TC_HEAD(name, tc) \ 740 { \ 741 atf_tc_set_md_var(tc, "descr", "Verify that clone(%s) is " \ 742 "handled correctly with vfork(2)ed tracer", \ 743 #flags); \ 744 } \ 745 \ 746 ATF_TC_BODY(name, tc) \ 747 { \ 748 \ 749 traceme_vfork_clone_body(flags); \ 750 } 751 752 TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone, 0) 753 TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone_vm, CLONE_VM) 754 TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone_fs, CLONE_FS) 755 TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone_files, CLONE_FILES) 756 //TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone_sighand, CLONE_SIGHAND) // XXX 757 TRACEME_VFORK_CLONE_TEST(traceme_vfork_clone_vfork, CLONE_VFORK) 758 #endif 759 760 #define ATF_TP_ADD_TCS_PTRACE_WAIT_CLONE() \ 761 ATF_TP_ADD_TC(tp, clone1); \ 762 ATF_TP_ADD_TC_HAVE_PID(tp, clone2); \ 763 ATF_TP_ADD_TC_HAVE_PID(tp, clone3); \ 764 ATF_TP_ADD_TC_HAVE_PID(tp, clone4); \ 765 ATF_TP_ADD_TC(tp, clone5); \ 766 ATF_TP_ADD_TC_HAVE_PID(tp, clone6); \ 767 ATF_TP_ADD_TC_HAVE_PID(tp, clone7); \ 768 ATF_TP_ADD_TC_HAVE_PID(tp, clone8); \ 769 ATF_TP_ADD_TC(tp, clone_vm1); \ 770 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm2); \ 771 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm3); \ 772 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm4); \ 773 ATF_TP_ADD_TC(tp, clone_vm5); \ 774 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm6); \ 775 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm7); \ 776 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm8); \ 777 ATF_TP_ADD_TC(tp, clone_fs1); \ 778 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs2); \ 779 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs3); \ 780 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs4); \ 781 ATF_TP_ADD_TC(tp, clone_fs5); \ 782 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs6); \ 783 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs7); \ 784 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs8); \ 785 ATF_TP_ADD_TC(tp, clone_files1); \ 786 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files2); \ 787 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files3); \ 788 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files4); \ 789 ATF_TP_ADD_TC(tp, clone_files5); \ 790 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files6); \ 791 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files7); \ 792 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files8); \ 793 ATF_TP_ADD_TC(tp, clone_vfork1); \ 794 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork2); \ 795 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork3); \ 796 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork4); \ 797 ATF_TP_ADD_TC(tp, clone_vfork5); \ 798 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork6); \ 799 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork7); \ 800 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork8); \ 801 ATF_TP_ADD_TC_HAVE_PID(tp, clone_signalignored); \ 802 ATF_TP_ADD_TC_HAVE_PID(tp, clone_signalmasked); \ 803 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm_signalignored); \ 804 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vm_signalmasked); \ 805 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs_signalignored); \ 806 ATF_TP_ADD_TC_HAVE_PID(tp, clone_fs_signalmasked); \ 807 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files_signalignored); \ 808 ATF_TP_ADD_TC_HAVE_PID(tp, clone_files_signalmasked); \ 809 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork_signalignored); \ 810 ATF_TP_ADD_TC_HAVE_PID(tp, clone_vfork_signalmasked); \ 811 ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone); \ 812 ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone_vm); \ 813 ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone_fs); \ 814 ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone_files); \ 815 ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone_vfork); 816 817 // ATF_TP_ADD_TC(tp, clone_sighand1); // XXX 818 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand2); // XXX 819 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand3); // XXX 820 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand4); // XXX 821 // ATF_TP_ADD_TC(tp, clone_sighand5); // XXX 822 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand6); // XXX 823 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand7); // XXX 824 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand8); // XXX 825 826 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand_signalignored); // XXX 827 // ATF_TP_ADD_TC_HAVE_PID(tp, clone_sighand_signalmasked); // XXX 828 829 // ATF_TP_ADD_TC_HAVE_PID(tp, traceme_vfork_clone_sighand); // XXX 830
Indexes created Sat Sep 27 14:09:57 GMT 2025