t_ptrace_signal_wait.h revision 1.5
1 /* $NetBSD: t_ptrace_signal_wait.h,v 1.5 2021/03/19 00:44:09 simonb 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 30 static void 31 traceme_raise(int sigval) 32 { 33 const int exitval = 5; 34 pid_t child, wpid; 35 #if defined(TWAIT_HAVE_STATUS) 36 int status; 37 #endif 38 39 ptrace_state_t state, zero_state; 40 const int slen = sizeof(state); 41 struct ptrace_siginfo info; 42 memset(&zero_state, 0, sizeof(zero_state)); 43 memset(&info, 0, sizeof(info)); 44 45 DPRINTF("Before forking process PID=%d\n", getpid()); 46 SYSCALL_REQUIRE((child = fork()) != -1); 47 if (child == 0) { 48 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 49 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 50 51 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 52 FORKEE_ASSERT(raise(sigval) == 0); 53 54 switch (sigval) { 55 case SIGKILL: 56 /* NOTREACHED */ 57 FORKEE_ASSERTX(0 && "This shall not be reached"); 58 __unreachable(); 59 default: 60 DPRINTF("Before exiting of the child process\n"); 61 _exit(exitval); 62 } 63 } 64 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 65 66 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 67 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 68 69 switch (sigval) { 70 case SIGKILL: 71 validate_status_signaled(status, sigval, 0); 72 SYSCALL_REQUIRE( 73 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) == -1); 74 75 break; 76 default: 77 validate_status_stopped(status, sigval); 78 79 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for " 80 "child\n"); 81 SYSCALL_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, 82 sizeof(info)) != -1); 83 84 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 85 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 86 "si_errno=%#x\n", 87 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 88 info.psi_siginfo.si_errno); 89 90 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 91 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 92 93 DPRINTF("Assert that PT_GET_PROCESS_STATE returns non-error\n"); 94 SYSCALL_REQUIRE( 95 ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); 96 ATF_REQUIRE(memcmp(&state, &zero_state, slen) == 0); 97 98 DPRINTF("Before resuming the child process where it left off " 99 "and without signal to be sent\n"); 100 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 101 102 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 103 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), 104 child); 105 break; 106 } 107 108 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 109 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 110 } 111 112 #define TRACEME_RAISE(test, sig) \ 113 ATF_TC(test); \ 114 ATF_TC_HEAD(test, tc) \ 115 { \ 116 atf_tc_set_md_var(tc, "descr", \ 117 "Verify " #sig " followed by _exit(2) in a child"); \ 118 } \ 119 \ 120 ATF_TC_BODY(test, tc) \ 121 { \ 122 \ 123 traceme_raise(sig); \ 124 } 125 126 TRACEME_RAISE(traceme_raise1, SIGKILL) /* non-maskable */ 127 TRACEME_RAISE(traceme_raise2, SIGSTOP) /* non-maskable */ 128 TRACEME_RAISE(traceme_raise3, SIGABRT) /* regular abort trap */ 129 TRACEME_RAISE(traceme_raise4, SIGHUP) /* hangup */ 130 TRACEME_RAISE(traceme_raise5, SIGCONT) /* continued? */ 131 TRACEME_RAISE(traceme_raise6, SIGTRAP) /* crash signal */ 132 TRACEME_RAISE(traceme_raise7, SIGBUS) /* crash signal */ 133 TRACEME_RAISE(traceme_raise8, SIGILL) /* crash signal */ 134 TRACEME_RAISE(traceme_raise9, SIGFPE) /* crash signal */ 135 TRACEME_RAISE(traceme_raise10, SIGSEGV) /* crash signal */ 136 137 /// ---------------------------------------------------------------------------- 138 139 static void 140 traceme_raisesignal_ignored(int sigignored) 141 { 142 const int exitval = 5; 143 const int sigval = SIGSTOP; 144 pid_t child, wpid; 145 struct sigaction sa; 146 #if defined(TWAIT_HAVE_STATUS) 147 int status; 148 #endif 149 struct ptrace_siginfo info; 150 151 memset(&info, 0, sizeof(info)); 152 153 DPRINTF("Before forking process PID=%d\n", getpid()); 154 SYSCALL_REQUIRE((child = fork()) != -1); 155 if (child == 0) { 156 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 157 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 158 159 memset(&sa, 0, sizeof(sa)); 160 sa.sa_handler = SIG_IGN; 161 sigemptyset(&sa.sa_mask); 162 FORKEE_ASSERT(sigaction(sigignored, &sa, NULL) != -1); 163 164 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 165 FORKEE_ASSERT(raise(sigval) == 0); 166 167 DPRINTF("Before raising %s from child\n", 168 strsignal(sigignored)); 169 FORKEE_ASSERT(raise(sigignored) == 0); 170 171 DPRINTF("Before exiting of the child process\n"); 172 _exit(exitval); 173 } 174 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 175 176 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 177 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 178 179 validate_status_stopped(status, sigval); 180 181 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 182 SYSCALL_REQUIRE( 183 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 184 185 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 186 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 187 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 188 info.psi_siginfo.si_errno); 189 190 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 191 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 192 193 DPRINTF("Before resuming the child process where it left off and " 194 "without signal to be sent\n"); 195 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 196 197 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 198 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 199 200 validate_status_stopped(status, sigignored); 201 202 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 203 SYSCALL_REQUIRE( 204 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 205 206 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 207 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 208 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 209 info.psi_siginfo.si_errno); 210 211 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigignored); 212 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 213 214 DPRINTF("Before resuming the child process where it left off and " 215 "without signal to be sent\n"); 216 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 217 218 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 219 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 220 221 validate_status_exited(status, exitval); 222 223 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 224 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 225 } 226 227 #define TRACEME_RAISESIGNAL_IGNORED(test, sig) \ 228 ATF_TC(test); \ 229 ATF_TC_HEAD(test, tc) \ 230 { \ 231 atf_tc_set_md_var(tc, "descr", \ 232 "Verify that ignoring (with SIG_IGN) " #sig " in tracee " \ 233 "does not stop tracer from catching this raised signal"); \ 234 } \ 235 \ 236 ATF_TC_BODY(test, tc) \ 237 { \ 238 \ 239 traceme_raisesignal_ignored(sig); \ 240 } 241 242 // A signal handler for SIGKILL and SIGSTOP cannot be ignored. 243 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored1, SIGABRT) /* abort */ 244 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored2, SIGHUP) /* hangup */ 245 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored3, SIGCONT) /* cont. */ 246 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored4, SIGTRAP) /* crash */ 247 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored5, SIGBUS) /* crash */ 248 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored6, SIGILL) /* crash */ 249 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored7, SIGFPE) /* crash */ 250 TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored8, SIGSEGV) /* crash */ 251 252 /// ---------------------------------------------------------------------------- 253 254 static void 255 traceme_raisesignal_masked(int sigmasked) 256 { 257 const int exitval = 5; 258 const int sigval = SIGSTOP; 259 pid_t child, wpid; 260 #if defined(TWAIT_HAVE_STATUS) 261 int status; 262 #endif 263 sigset_t intmask; 264 struct ptrace_siginfo info; 265 266 memset(&info, 0, sizeof(info)); 267 268 DPRINTF("Before forking process PID=%d\n", getpid()); 269 SYSCALL_REQUIRE((child = fork()) != -1); 270 if (child == 0) { 271 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 272 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 273 274 sigemptyset(&intmask); 275 sigaddset(&intmask, sigmasked); 276 sigprocmask(SIG_BLOCK, &intmask, NULL); 277 278 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 279 FORKEE_ASSERT(raise(sigval) == 0); 280 281 DPRINTF("Before raising %s breakpoint from child\n", 282 strsignal(sigmasked)); 283 FORKEE_ASSERT(raise(sigmasked) == 0); 284 285 DPRINTF("Before exiting of the child process\n"); 286 _exit(exitval); 287 } 288 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 289 290 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 291 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 292 293 validate_status_stopped(status, sigval); 294 295 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 296 SYSCALL_REQUIRE( 297 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 298 299 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 300 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 301 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 302 info.psi_siginfo.si_errno); 303 304 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 305 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 306 307 DPRINTF("Before resuming the child process where it left off and " 308 "without signal to be sent\n"); 309 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 310 311 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 312 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 313 314 validate_status_exited(status, exitval); 315 316 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 317 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 318 } 319 320 #define TRACEME_RAISESIGNAL_MASKED(test, sig) \ 321 ATF_TC(test); \ 322 ATF_TC_HEAD(test, tc) \ 323 { \ 324 atf_tc_set_md_var(tc, "descr", \ 325 "Verify that masking (with SIG_BLOCK) " #sig " in tracee " \ 326 "stops tracer from catching this raised signal"); \ 327 } \ 328 \ 329 ATF_TC_BODY(test, tc) \ 330 { \ 331 \ 332 traceme_raisesignal_masked(sig); \ 333 } 334 335 // A signal handler for SIGKILL and SIGSTOP cannot be masked. 336 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked1, SIGABRT) /* abort trap */ 337 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked2, SIGHUP) /* hangup */ 338 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked3, SIGCONT) /* continued? */ 339 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked4, SIGTRAP) /* crash sig. */ 340 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked5, SIGBUS) /* crash sig. */ 341 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked6, SIGILL) /* crash sig. */ 342 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked7, SIGFPE) /* crash sig. */ 343 TRACEME_RAISESIGNAL_MASKED(traceme_raisesignal_masked8, SIGSEGV) /* crash sig. */ 344 345 /// ---------------------------------------------------------------------------- 346 347 static void 348 traceme_crash(int sig) 349 { 350 pid_t child, wpid; 351 #if defined(TWAIT_HAVE_STATUS) 352 int status; 353 #endif 354 struct ptrace_siginfo info; 355 356 #ifndef PTRACE_ILLEGAL_ASM 357 if (sig == SIGILL) 358 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 359 #endif 360 361 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 362 atf_tc_skip("FP exceptions are not supported"); 363 364 memset(&info, 0, sizeof(info)); 365 366 DPRINTF("Before forking process PID=%d\n", getpid()); 367 SYSCALL_REQUIRE((child = fork()) != -1); 368 if (child == 0) { 369 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 370 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 371 372 DPRINTF("Before executing a trap\n"); 373 switch (sig) { 374 case SIGTRAP: 375 trigger_trap(); 376 break; 377 case SIGSEGV: 378 trigger_segv(); 379 break; 380 case SIGILL: 381 trigger_ill(); 382 break; 383 case SIGFPE: 384 trigger_fpe(); 385 break; 386 case SIGBUS: 387 trigger_bus(); 388 break; 389 default: 390 /* NOTREACHED */ 391 FORKEE_ASSERTX(0 && "This shall not be reached"); 392 } 393 394 /* NOTREACHED */ 395 FORKEE_ASSERTX(0 && "This shall not be reached"); 396 } 397 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 398 399 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 400 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 401 402 validate_status_stopped(status, sig); 403 404 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 405 SYSCALL_REQUIRE( 406 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 407 408 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 409 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 410 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 411 info.psi_siginfo.si_errno); 412 413 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sig); 414 switch (sig) { 415 case SIGTRAP: 416 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_BRKPT); 417 break; 418 case SIGSEGV: 419 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SEGV_MAPERR); 420 break; 421 case SIGILL: 422 ATF_REQUIRE(info.psi_siginfo.si_code >= ILL_ILLOPC && 423 info.psi_siginfo.si_code <= ILL_BADSTK); 424 break; 425 case SIGFPE: 426 // XXXQEMU ATF_REQUIRE_EQ(info.psi_siginfo.si_code, FPE_FLTDIV); 427 break; 428 case SIGBUS: 429 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, BUS_ADRERR); 430 break; 431 } 432 433 SYSCALL_REQUIRE(ptrace(PT_KILL, child, NULL, 0) != -1); 434 435 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 436 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 437 438 validate_status_signaled(status, SIGKILL, 0); 439 440 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 441 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 442 } 443 444 #define TRACEME_CRASH(test, sig) \ 445 ATF_TC(test); \ 446 ATF_TC_HEAD(test, tc) \ 447 { \ 448 atf_tc_set_md_var(tc, "descr", \ 449 "Verify crash signal " #sig " in a child after PT_TRACE_ME"); \ 450 } \ 451 \ 452 ATF_TC_BODY(test, tc) \ 453 { \ 454 \ 455 traceme_crash(sig); \ 456 } 457 458 TRACEME_CRASH(traceme_crash_trap, SIGTRAP) 459 TRACEME_CRASH(traceme_crash_segv, SIGSEGV) 460 TRACEME_CRASH(traceme_crash_ill, SIGILL) 461 TRACEME_CRASH(traceme_crash_fpe, SIGFPE) 462 TRACEME_CRASH(traceme_crash_bus, SIGBUS) 463 464 /// ---------------------------------------------------------------------------- 465 466 static void 467 traceme_signalmasked_crash(int sig) 468 { 469 const int sigval = SIGSTOP; 470 pid_t child, wpid; 471 #if defined(TWAIT_HAVE_STATUS) 472 int status; 473 #endif 474 struct ptrace_siginfo info; 475 sigset_t intmask; 476 struct kinfo_proc2 kp; 477 size_t len = sizeof(kp); 478 479 int name[6]; 480 const size_t namelen = __arraycount(name); 481 ki_sigset_t kp_sigmask; 482 483 #ifndef PTRACE_ILLEGAL_ASM 484 if (sig == SIGILL) 485 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 486 #endif 487 488 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 489 atf_tc_skip("FP exceptions are not supported"); 490 491 memset(&info, 0, sizeof(info)); 492 493 DPRINTF("Before forking process PID=%d\n", getpid()); 494 SYSCALL_REQUIRE((child = fork()) != -1); 495 if (child == 0) { 496 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 497 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 498 499 sigemptyset(&intmask); 500 sigaddset(&intmask, sig); 501 sigprocmask(SIG_BLOCK, &intmask, NULL); 502 503 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 504 FORKEE_ASSERT(raise(sigval) == 0); 505 506 DPRINTF("Before executing a trap\n"); 507 switch (sig) { 508 case SIGTRAP: 509 trigger_trap(); 510 break; 511 case SIGSEGV: 512 trigger_segv(); 513 break; 514 case SIGILL: 515 trigger_ill(); 516 break; 517 case SIGFPE: 518 trigger_fpe(); 519 break; 520 case SIGBUS: 521 trigger_bus(); 522 break; 523 default: 524 /* NOTREACHED */ 525 FORKEE_ASSERTX(0 && "This shall not be reached"); 526 } 527 528 /* NOTREACHED */ 529 FORKEE_ASSERTX(0 && "This shall not be reached"); 530 } 531 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 532 533 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 534 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 535 536 validate_status_stopped(status, sigval); 537 538 name[0] = CTL_KERN, 539 name[1] = KERN_PROC2, 540 name[2] = KERN_PROC_PID; 541 name[3] = child; 542 name[4] = sizeof(kp); 543 name[5] = 1; 544 545 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 546 547 kp_sigmask = kp.p_sigmask; 548 549 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 550 SYSCALL_REQUIRE( 551 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 552 553 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 554 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 555 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 556 info.psi_siginfo.si_errno); 557 558 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 559 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 560 561 DPRINTF("Before resuming the child process where it left off and " 562 "without signal to be sent\n"); 563 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 564 565 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 566 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 567 568 validate_status_stopped(status, sig); 569 570 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 571 SYSCALL_REQUIRE( 572 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 573 574 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 575 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 576 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 577 info.psi_siginfo.si_errno); 578 579 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 580 581 DPRINTF("kp_sigmask=" 582 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" PRIx32"\n", 583 kp_sigmask.__bits[0], kp_sigmask.__bits[1], kp_sigmask.__bits[2], 584 kp_sigmask.__bits[3]); 585 586 DPRINTF("kp.p_sigmask=" 587 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" PRIx32"\n", 588 kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1], 589 kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]); 590 591 ATF_REQUIRE(!memcmp(&kp_sigmask, &kp.p_sigmask, sizeof(kp_sigmask))); 592 593 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sig); 594 switch (sig) { 595 case SIGTRAP: 596 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_BRKPT); 597 break; 598 case SIGSEGV: 599 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SEGV_MAPERR); 600 break; 601 case SIGILL: 602 ATF_REQUIRE(info.psi_siginfo.si_code >= ILL_ILLOPC && 603 info.psi_siginfo.si_code <= ILL_BADSTK); 604 break; 605 case SIGFPE: 606 // XXXQEMU ATF_REQUIRE_EQ(info.psi_siginfo.si_code, FPE_FLTDIV); 607 break; 608 case SIGBUS: 609 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, BUS_ADRERR); 610 break; 611 } 612 613 SYSCALL_REQUIRE(ptrace(PT_KILL, child, NULL, 0) != -1); 614 615 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 616 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 617 618 validate_status_signaled(status, SIGKILL, 0); 619 620 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 621 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 622 } 623 624 #define TRACEME_SIGNALMASKED_CRASH(test, sig) \ 625 ATF_TC(test); \ 626 ATF_TC_HEAD(test, tc) \ 627 { \ 628 atf_tc_set_md_var(tc, "descr", \ 629 "Verify masked crash signal " #sig " in a child after " \ 630 "PT_TRACE_ME is delivered to its tracer"); \ 631 } \ 632 \ 633 ATF_TC_BODY(test, tc) \ 634 { \ 635 \ 636 traceme_signalmasked_crash(sig); \ 637 } 638 639 TRACEME_SIGNALMASKED_CRASH(traceme_signalmasked_crash_trap, SIGTRAP) 640 TRACEME_SIGNALMASKED_CRASH(traceme_signalmasked_crash_segv, SIGSEGV) 641 TRACEME_SIGNALMASKED_CRASH(traceme_signalmasked_crash_ill, SIGILL) 642 TRACEME_SIGNALMASKED_CRASH(traceme_signalmasked_crash_fpe, SIGFPE) 643 TRACEME_SIGNALMASKED_CRASH(traceme_signalmasked_crash_bus, SIGBUS) 644 645 /// ---------------------------------------------------------------------------- 646 647 static void 648 traceme_signalignored_crash(int sig) 649 { 650 const int sigval = SIGSTOP; 651 pid_t child, wpid; 652 #if defined(TWAIT_HAVE_STATUS) 653 int status; 654 #endif 655 struct sigaction sa; 656 struct ptrace_siginfo info; 657 struct kinfo_proc2 kp; 658 size_t len = sizeof(kp); 659 660 int name[6]; 661 const size_t namelen = __arraycount(name); 662 ki_sigset_t kp_sigignore; 663 664 #ifndef PTRACE_ILLEGAL_ASM 665 if (sig == SIGILL) 666 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 667 #endif 668 669 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 670 atf_tc_skip("FP exceptions are not supported"); 671 672 memset(&info, 0, sizeof(info)); 673 674 DPRINTF("Before forking process PID=%d\n", getpid()); 675 SYSCALL_REQUIRE((child = fork()) != -1); 676 if (child == 0) { 677 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 678 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 679 680 memset(&sa, 0, sizeof(sa)); 681 sa.sa_handler = SIG_IGN; 682 sigemptyset(&sa.sa_mask); 683 684 FORKEE_ASSERT(sigaction(sig, &sa, NULL) != -1); 685 686 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 687 FORKEE_ASSERT(raise(sigval) == 0); 688 689 DPRINTF("Before executing a trap\n"); 690 switch (sig) { 691 case SIGTRAP: 692 trigger_trap(); 693 break; 694 case SIGSEGV: 695 trigger_segv(); 696 break; 697 case SIGILL: 698 trigger_ill(); 699 break; 700 case SIGFPE: 701 trigger_fpe(); 702 break; 703 case SIGBUS: 704 trigger_bus(); 705 break; 706 default: 707 /* NOTREACHED */ 708 FORKEE_ASSERTX(0 && "This shall not be reached"); 709 } 710 711 /* NOTREACHED */ 712 FORKEE_ASSERTX(0 && "This shall not be reached"); 713 } 714 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 715 716 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 717 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 718 719 validate_status_stopped(status, sigval); 720 721 name[0] = CTL_KERN, 722 name[1] = KERN_PROC2, 723 name[2] = KERN_PROC_PID; 724 name[3] = child; 725 name[4] = sizeof(kp); 726 name[5] = 1; 727 728 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 729 730 kp_sigignore = kp.p_sigignore; 731 732 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 733 SYSCALL_REQUIRE( 734 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 735 736 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 737 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 738 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 739 info.psi_siginfo.si_errno); 740 741 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 742 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 743 744 DPRINTF("Before resuming the child process where it left off and " 745 "without signal to be sent\n"); 746 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 747 748 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 749 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 750 751 validate_status_stopped(status, sig); 752 753 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 754 SYSCALL_REQUIRE( 755 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 756 757 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 758 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 759 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 760 info.psi_siginfo.si_errno); 761 762 ATF_REQUIRE_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 763 764 DPRINTF("kp_sigignore=" 765 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" PRIx32"\n", 766 kp_sigignore.__bits[0], kp_sigignore.__bits[1], 767 kp_sigignore.__bits[2], kp_sigignore.__bits[3]); 768 769 DPRINTF("kp.p_sigignore=" 770 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" PRIx32"\n", 771 kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1], 772 kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]); 773 774 ATF_REQUIRE(!memcmp(&kp_sigignore, &kp.p_sigignore, sizeof(kp_sigignore))); 775 776 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sig); 777 switch (sig) { 778 case SIGTRAP: 779 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_BRKPT); 780 break; 781 case SIGSEGV: 782 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SEGV_MAPERR); 783 break; 784 case SIGILL: 785 ATF_REQUIRE(info.psi_siginfo.si_code >= ILL_ILLOPC && 786 info.psi_siginfo.si_code <= ILL_BADSTK); 787 break; 788 case SIGFPE: 789 // XXXQEMU ATF_REQUIRE_EQ(info.psi_siginfo.si_code, FPE_FLTDIV); 790 break; 791 case SIGBUS: 792 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, BUS_ADRERR); 793 break; 794 } 795 796 SYSCALL_REQUIRE(ptrace(PT_KILL, child, NULL, 0) != -1); 797 798 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 799 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 800 801 validate_status_signaled(status, SIGKILL, 0); 802 803 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 804 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 805 } 806 807 #define TRACEME_SIGNALIGNORED_CRASH(test, sig) \ 808 ATF_TC(test); \ 809 ATF_TC_HEAD(test, tc) \ 810 { \ 811 atf_tc_set_md_var(tc, "descr", \ 812 "Verify ignored crash signal " #sig " in a child after " \ 813 "PT_TRACE_ME is delivered to its tracer"); \ 814 } \ 815 \ 816 ATF_TC_BODY(test, tc) \ 817 { \ 818 \ 819 traceme_signalignored_crash(sig); \ 820 } 821 822 TRACEME_SIGNALIGNORED_CRASH(traceme_signalignored_crash_trap, SIGTRAP) 823 TRACEME_SIGNALIGNORED_CRASH(traceme_signalignored_crash_segv, SIGSEGV) 824 TRACEME_SIGNALIGNORED_CRASH(traceme_signalignored_crash_ill, SIGILL) 825 TRACEME_SIGNALIGNORED_CRASH(traceme_signalignored_crash_fpe, SIGFPE) 826 TRACEME_SIGNALIGNORED_CRASH(traceme_signalignored_crash_bus, SIGBUS) 827 828 /// ---------------------------------------------------------------------------- 829 830 static void 831 traceme_sendsignal_handle(int sigsent, void (*sah)(int a), int *traceme_caught) 832 { 833 const int exitval = 5; 834 const int sigval = SIGSTOP; 835 pid_t child, wpid; 836 struct sigaction sa; 837 #if defined(TWAIT_HAVE_STATUS) 838 int status; 839 #endif 840 struct ptrace_siginfo info; 841 842 memset(&info, 0, sizeof(info)); 843 844 DPRINTF("Before forking process PID=%d\n", getpid()); 845 SYSCALL_REQUIRE((child = fork()) != -1); 846 if (child == 0) { 847 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 848 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 849 850 sa.sa_handler = sah; 851 sa.sa_flags = SA_SIGINFO; 852 sigemptyset(&sa.sa_mask); 853 854 FORKEE_ASSERT(sigaction(sigsent, &sa, NULL) != -1); 855 856 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 857 FORKEE_ASSERT(raise(sigval) == 0); 858 859 FORKEE_ASSERT_EQ(*traceme_caught, 1); 860 861 DPRINTF("Before exiting of the child process\n"); 862 _exit(exitval); 863 } 864 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 865 866 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 867 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 868 869 validate_status_stopped(status, sigval); 870 871 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 872 SYSCALL_REQUIRE( 873 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 874 875 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 876 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 877 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 878 info.psi_siginfo.si_errno); 879 880 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 881 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 882 883 DPRINTF("Before resuming the child process where it left off and with " 884 "signal %s to be sent\n", strsignal(sigsent)); 885 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, sigsent) != -1); 886 887 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 888 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 889 890 validate_status_exited(status, exitval); 891 892 DPRINTF("Before calling %s() for the exited child\n", TWAIT_FNAME); 893 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 894 } 895 896 #define TRACEME_SENDSIGNAL_HANDLE(test, sig) \ 897 ATF_TC(test); \ 898 ATF_TC_HEAD(test, tc) \ 899 { \ 900 atf_tc_set_md_var(tc, "descr", \ 901 "Verify that a signal " #sig " emitted by a tracer to a child is " \ 902 "handled correctly and caught by a signal handler"); \ 903 } \ 904 \ 905 static int test##_caught = 0; \ 906 \ 907 static void \ 908 test##_sighandler(int arg) \ 909 { \ 910 FORKEE_ASSERT_EQ(arg, sig); \ 911 \ 912 ++ test##_caught; \ 913 } \ 914 \ 915 ATF_TC_BODY(test, tc) \ 916 { \ 917 \ 918 traceme_sendsignal_handle(sig, test##_sighandler, & test##_caught); \ 919 } 920 921 // A signal handler for SIGKILL and SIGSTOP cannot be registered. 922 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle1, SIGABRT) /* abort trap */ 923 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle2, SIGHUP) /* hangup */ 924 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle3, SIGCONT) /* continued? */ 925 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle4, SIGTRAP) /* crash sig. */ 926 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle5, SIGBUS) /* crash sig. */ 927 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle6, SIGILL) /* crash sig. */ 928 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle7, SIGFPE) /* crash sig. */ 929 TRACEME_SENDSIGNAL_HANDLE(traceme_sendsignal_handle8, SIGSEGV) /* crash sig. */ 930 931 /// ---------------------------------------------------------------------------- 932 933 static void 934 traceme_sendsignal_masked(int sigsent) 935 { 936 const int exitval = 5; 937 const int sigval = SIGSTOP; 938 pid_t child, wpid; 939 sigset_t set; 940 #if defined(TWAIT_HAVE_STATUS) 941 int status; 942 #endif 943 struct ptrace_siginfo info; 944 945 memset(&info, 0, sizeof(info)); 946 947 DPRINTF("Before forking process PID=%d\n", getpid()); 948 SYSCALL_REQUIRE((child = fork()) != -1); 949 if (child == 0) { 950 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 951 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 952 953 sigemptyset(&set); 954 sigaddset(&set, sigsent); 955 FORKEE_ASSERT(sigprocmask(SIG_BLOCK, &set, NULL) != -1); 956 957 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 958 FORKEE_ASSERT(raise(sigval) == 0); 959 960 _exit(exitval); 961 } 962 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 963 964 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 965 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 966 967 validate_status_stopped(status, sigval); 968 969 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 970 SYSCALL_REQUIRE( 971 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 972 973 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 974 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 975 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 976 info.psi_siginfo.si_errno); 977 978 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 979 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 980 981 DPRINTF("Before resuming the child process where it left off and with " 982 "signal %s to be sent\n", strsignal(sigsent)); 983 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, sigsent) != -1); 984 985 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 986 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 987 988 validate_status_exited(status, exitval); 989 990 DPRINTF("Before calling %s() for the exited child\n", TWAIT_FNAME); 991 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 992 } 993 994 #define TRACEME_SENDSIGNAL_MASKED(test, sig) \ 995 ATF_TC(test); \ 996 ATF_TC_HEAD(test, tc) \ 997 { \ 998 atf_tc_set_md_var(tc, "descr", \ 999 "Verify that a signal " #sig " emitted by a tracer to a child is " \ 1000 "handled correctly and the signal is masked by SIG_BLOCK"); \ 1001 } \ 1002 \ 1003 ATF_TC_BODY(test, tc) \ 1004 { \ 1005 \ 1006 traceme_sendsignal_masked(sig); \ 1007 } 1008 1009 // A signal handler for SIGKILL and SIGSTOP cannot be masked. 1010 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked1, SIGABRT) /* abort trap */ 1011 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked2, SIGHUP) /* hangup */ 1012 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked3, SIGCONT) /* continued? */ 1013 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked4, SIGTRAP) /* crash sig. */ 1014 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked5, SIGBUS) /* crash sig. */ 1015 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked6, SIGILL) /* crash sig. */ 1016 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked7, SIGFPE) /* crash sig. */ 1017 TRACEME_SENDSIGNAL_MASKED(traceme_sendsignal_masked8, SIGSEGV) /* crash sig. */ 1018 1019 /// ---------------------------------------------------------------------------- 1020 1021 static void 1022 traceme_sendsignal_ignored(int sigsent) 1023 { 1024 const int exitval = 5; 1025 const int sigval = SIGSTOP; 1026 pid_t child, wpid; 1027 struct sigaction sa; 1028 #if defined(TWAIT_HAVE_STATUS) 1029 int status; 1030 #endif 1031 struct ptrace_siginfo info; 1032 1033 memset(&info, 0, sizeof(info)); 1034 1035 DPRINTF("Before forking process PID=%d\n", getpid()); 1036 SYSCALL_REQUIRE((child = fork()) != -1); 1037 if (child == 0) { 1038 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1039 1040 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1041 1042 memset(&sa, 0, sizeof(sa)); 1043 sa.sa_handler = SIG_IGN; 1044 sigemptyset(&sa.sa_mask); 1045 FORKEE_ASSERT(sigaction(sigsent, &sa, NULL) != -1); 1046 1047 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 1048 FORKEE_ASSERT(raise(sigval) == 0); 1049 1050 _exit(exitval); 1051 } 1052 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1053 1054 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1055 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1056 1057 validate_status_stopped(status, sigval); 1058 1059 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 1060 SYSCALL_REQUIRE( 1061 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 1062 1063 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1064 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 1065 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 1066 info.psi_siginfo.si_errno); 1067 1068 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 1069 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 1070 1071 DPRINTF("Before resuming the child process where it left off and with " 1072 "signal %s to be sent\n", strsignal(sigsent)); 1073 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, sigsent) != -1); 1074 1075 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1076 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1077 1078 validate_status_exited(status, exitval); 1079 1080 DPRINTF("Before calling %s() for the exited child\n", TWAIT_FNAME); 1081 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1082 } 1083 1084 #define TRACEME_SENDSIGNAL_IGNORED(test, sig) \ 1085 ATF_TC(test); \ 1086 ATF_TC_HEAD(test, tc) \ 1087 { \ 1088 atf_tc_set_md_var(tc, "descr", \ 1089 "Verify that a signal " #sig " emitted by a tracer to a child is " \ 1090 "handled correctly and the signal is masked by SIG_IGN"); \ 1091 } \ 1092 \ 1093 ATF_TC_BODY(test, tc) \ 1094 { \ 1095 \ 1096 traceme_sendsignal_ignored(sig); \ 1097 } 1098 1099 // A signal handler for SIGKILL and SIGSTOP cannot be ignored. 1100 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored1, SIGABRT) /* abort */ 1101 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored2, SIGHUP) /* hangup */ 1102 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored3, SIGCONT) /* continued */ 1103 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored4, SIGTRAP) /* crash s. */ 1104 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored5, SIGBUS) /* crash s. */ 1105 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored6, SIGILL) /* crash s. */ 1106 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored7, SIGFPE) /* crash s. */ 1107 TRACEME_SENDSIGNAL_IGNORED(traceme_sendsignal_ignored8, SIGSEGV) /* crash s. */ 1108 1109 /// ---------------------------------------------------------------------------- 1110 1111 static void 1112 traceme_sendsignal_simple(int sigsent) 1113 { 1114 const int sigval = SIGSTOP; 1115 int exitval = 0; 1116 pid_t child, wpid; 1117 #if defined(TWAIT_HAVE_STATUS) 1118 int status; 1119 int expect_core; 1120 1121 switch (sigsent) { 1122 case SIGABRT: 1123 case SIGTRAP: 1124 case SIGBUS: 1125 case SIGILL: 1126 case SIGFPE: 1127 case SIGSEGV: 1128 expect_core = 1; 1129 break; 1130 default: 1131 expect_core = 0; 1132 break; 1133 } 1134 #endif 1135 struct ptrace_siginfo info; 1136 1137 memset(&info, 0, sizeof(info)); 1138 1139 DPRINTF("Before forking process PID=%d\n", getpid()); 1140 SYSCALL_REQUIRE((child = fork()) != -1); 1141 if (child == 0) { 1142 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1143 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1144 1145 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 1146 FORKEE_ASSERT(raise(sigval) == 0); 1147 1148 switch (sigsent) { 1149 case SIGCONT: 1150 case SIGSTOP: 1151 _exit(exitval); 1152 default: 1153 /* NOTREACHED */ 1154 FORKEE_ASSERTX(0 && "This shall not be reached"); 1155 } 1156 } 1157 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1158 1159 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1160 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1161 1162 validate_status_stopped(status, sigval); 1163 1164 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n"); 1165 SYSCALL_REQUIRE( 1166 ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1); 1167 1168 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1169 DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n", 1170 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 1171 info.psi_siginfo.si_errno); 1172 1173 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 1174 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 1175 1176 DPRINTF("Before resuming the child process where it left off and with " 1177 "signal %s to be sent\n", strsignal(sigsent)); 1178 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, sigsent) != -1); 1179 1180 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1181 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1182 1183 switch (sigsent) { 1184 case SIGSTOP: 1185 validate_status_stopped(status, sigsent); 1186 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for " 1187 "child\n"); 1188 SYSCALL_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, 1189 sizeof(info)) != -1); 1190 1191 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1192 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 1193 "si_errno=%#x\n", 1194 info.psi_siginfo.si_signo, info.psi_siginfo.si_code, 1195 info.psi_siginfo.si_errno); 1196 1197 ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval); 1198 ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP); 1199 1200 DPRINTF("Before resuming the child process where it left off " 1201 "and with signal %s to be sent\n", strsignal(sigsent)); 1202 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 1203 1204 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1205 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), 1206 child); 1207 /* FALLTHROUGH */ 1208 case SIGCONT: 1209 validate_status_exited(status, exitval); 1210 break; 1211 default: 1212 validate_status_signaled(status, sigsent, expect_core); 1213 break; 1214 } 1215 1216 DPRINTF("Before calling %s() for the exited child\n", TWAIT_FNAME); 1217 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1218 } 1219 1220 #define TRACEME_SENDSIGNAL_SIMPLE(test, sig) \ 1221 ATF_TC(test); \ 1222 ATF_TC_HEAD(test, tc) \ 1223 { \ 1224 atf_tc_set_md_var(tc, "descr", \ 1225 "Verify that a signal " #sig " emitted by a tracer to a child is " \ 1226 "handled correctly in a child without a signal handler"); \ 1227 } \ 1228 \ 1229 ATF_TC_BODY(test, tc) \ 1230 { \ 1231 \ 1232 traceme_sendsignal_simple(sig); \ 1233 } 1234 1235 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple1, SIGKILL) /* non-maskable*/ 1236 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple2, SIGSTOP) /* non-maskable*/ 1237 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple3, SIGABRT) /* abort trap */ 1238 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple4, SIGHUP) /* hangup */ 1239 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple5, SIGCONT) /* continued? */ 1240 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple6, SIGTRAP) /* crash sig. */ 1241 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple7, SIGBUS) /* crash sig. */ 1242 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple8, SIGILL) /* crash sig. */ 1243 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple9, SIGFPE) /* crash sig. */ 1244 TRACEME_SENDSIGNAL_SIMPLE(traceme_sendsignal_simple10, SIGSEGV) /* crash sig. */ 1245 1246 /// ---------------------------------------------------------------------------- 1247 1248 static void 1249 traceme_vfork_raise(int sigval) 1250 { 1251 const int exitval = 5, exitval_watcher = 10; 1252 pid_t child, parent, watcher, wpid; 1253 int rv; 1254 #if defined(TWAIT_HAVE_STATUS) 1255 int status; 1256 1257 /* volatile workarounds GCC -Werror=clobbered */ 1258 volatile int expect_core; 1259 1260 switch (sigval) { 1261 case SIGABRT: 1262 case SIGTRAP: 1263 case SIGBUS: 1264 case SIGILL: 1265 case SIGFPE: 1266 case SIGSEGV: 1267 expect_core = 1; 1268 break; 1269 default: 1270 expect_core = 0; 1271 break; 1272 } 1273 #endif 1274 1275 /* 1276 * Spawn a dedicated thread to watch for a stopped child and emit 1277 * the SIGKILL signal to it. 1278 * 1279 * vfork(2) might clobber watcher, this means that it's safer and 1280 * simpler to reparent this process to initproc and forget about it. 1281 */ 1282 if (sigval == SIGSTOP) { 1283 parent = getpid(); 1284 1285 watcher = fork(); 1286 ATF_REQUIRE(watcher != 1); 1287 if (watcher == 0) { 1288 /* Double fork(2) trick to reparent to initproc */ 1289 watcher = fork(); 1290 FORKEE_ASSERT_NEQ(watcher, -1); 1291 if (watcher != 0) 1292 _exit(exitval_watcher); 1293 1294 child = await_stopped_child(parent); 1295 1296 errno = 0; 1297 rv = kill(child, SIGKILL); 1298 FORKEE_ASSERT_EQ(rv, 0); 1299 FORKEE_ASSERT_EQ(errno, 0); 1300 1301 /* This exit value will be collected by initproc */ 1302 _exit(0); 1303 } 1304 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1305 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(watcher, &status, 0), 1306 watcher); 1307 1308 validate_status_exited(status, exitval_watcher); 1309 1310 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1311 TWAIT_REQUIRE_FAILURE(ECHILD, 1312 wpid = TWAIT_GENERIC(watcher, &status, 0)); 1313 } 1314 1315 DPRINTF("Before forking process PID=%d\n", getpid()); 1316 SYSCALL_REQUIRE((child = vfork()) != -1); 1317 if (child == 0) { 1318 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1319 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1320 1321 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 1322 FORKEE_ASSERT(raise(sigval) == 0); 1323 1324 switch (sigval) { 1325 case SIGSTOP: 1326 case SIGKILL: 1327 case SIGABRT: 1328 case SIGHUP: 1329 case SIGTRAP: 1330 case SIGBUS: 1331 case SIGILL: 1332 case SIGFPE: 1333 case SIGSEGV: 1334 /* NOTREACHED */ 1335 FORKEE_ASSERTX(0 && "This shall not be reached"); 1336 __unreachable(); 1337 default: 1338 DPRINTF("Before exiting of the child process\n"); 1339 _exit(exitval); 1340 } 1341 } 1342 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1343 1344 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1345 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1346 1347 switch (sigval) { 1348 case SIGKILL: 1349 case SIGABRT: 1350 case SIGHUP: 1351 case SIGTRAP: 1352 case SIGBUS: 1353 case SIGILL: 1354 case SIGFPE: 1355 case SIGSEGV: 1356 validate_status_signaled(status, sigval, expect_core); 1357 break; 1358 case SIGSTOP: 1359 validate_status_signaled(status, SIGKILL, 0); 1360 break; 1361 case SIGCONT: 1362 case SIGTSTP: 1363 case SIGTTIN: 1364 case SIGTTOU: 1365 validate_status_exited(status, exitval); 1366 break; 1367 default: 1368 /* NOTREACHED */ 1369 ATF_REQUIRE(0 && "NOT IMPLEMENTED"); 1370 break; 1371 } 1372 1373 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1374 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1375 } 1376 1377 #define TRACEME_VFORK_RAISE(test, sig) \ 1378 ATF_TC(test); \ 1379 ATF_TC_HEAD(test, tc) \ 1380 { \ 1381 atf_tc_set_md_var(tc, "descr", \ 1382 "Verify PT_TRACE_ME followed by raise of " #sig " in a " \ 1383 "vfork(2)ed child"); \ 1384 } \ 1385 \ 1386 ATF_TC_BODY(test, tc) \ 1387 { \ 1388 \ 1389 traceme_vfork_raise(sig); \ 1390 } 1391 1392 TRACEME_VFORK_RAISE(traceme_vfork_raise1, SIGKILL) /* non-maskable */ 1393 TRACEME_VFORK_RAISE(traceme_vfork_raise2, SIGSTOP) /* non-maskable */ 1394 TRACEME_VFORK_RAISE(traceme_vfork_raise3, SIGTSTP) /* ignored in vfork(2) */ 1395 TRACEME_VFORK_RAISE(traceme_vfork_raise4, SIGTTIN) /* ignored in vfork(2) */ 1396 TRACEME_VFORK_RAISE(traceme_vfork_raise5, SIGTTOU) /* ignored in vfork(2) */ 1397 TRACEME_VFORK_RAISE(traceme_vfork_raise6, SIGABRT) /* regular abort trap */ 1398 TRACEME_VFORK_RAISE(traceme_vfork_raise7, SIGHUP) /* hangup */ 1399 TRACEME_VFORK_RAISE(traceme_vfork_raise8, SIGCONT) /* continued? */ 1400 TRACEME_VFORK_RAISE(traceme_vfork_raise9, SIGTRAP) /* crash signal */ 1401 TRACEME_VFORK_RAISE(traceme_vfork_raise10, SIGBUS) /* crash signal */ 1402 TRACEME_VFORK_RAISE(traceme_vfork_raise11, SIGILL) /* crash signal */ 1403 TRACEME_VFORK_RAISE(traceme_vfork_raise12, SIGFPE) /* crash signal */ 1404 TRACEME_VFORK_RAISE(traceme_vfork_raise13, SIGSEGV) /* crash signal */ 1405 1406 /// ---------------------------------------------------------------------------- 1407 1408 static void 1409 traceme_vfork_crash(int sig) 1410 { 1411 pid_t child, wpid; 1412 #if defined(TWAIT_HAVE_STATUS) 1413 int status; 1414 #endif 1415 1416 #ifndef PTRACE_ILLEGAL_ASM 1417 if (sig == SIGILL) 1418 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 1419 #endif 1420 1421 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 1422 atf_tc_skip("FP exceptions are not supported"); 1423 1424 DPRINTF("Before forking process PID=%d\n", getpid()); 1425 SYSCALL_REQUIRE((child = vfork()) != -1); 1426 if (child == 0) { 1427 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1428 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1429 1430 DPRINTF("Before executing a trap\n"); 1431 switch (sig) { 1432 case SIGTRAP: 1433 trigger_trap(); 1434 break; 1435 case SIGSEGV: 1436 trigger_segv(); 1437 break; 1438 case SIGILL: 1439 trigger_ill(); 1440 break; 1441 case SIGFPE: 1442 trigger_fpe(); 1443 break; 1444 case SIGBUS: 1445 trigger_bus(); 1446 break; 1447 default: 1448 /* NOTREACHED */ 1449 FORKEE_ASSERTX(0 && "This shall not be reached"); 1450 } 1451 1452 /* NOTREACHED */ 1453 FORKEE_ASSERTX(0 && "This shall not be reached"); 1454 } 1455 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1456 1457 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1458 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1459 1460 validate_status_signaled(status, sig, 1); 1461 1462 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1463 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1464 } 1465 1466 #define TRACEME_VFORK_CRASH(test, sig) \ 1467 ATF_TC(test); \ 1468 ATF_TC_HEAD(test, tc) \ 1469 { \ 1470 atf_tc_set_md_var(tc, "descr", \ 1471 "Verify PT_TRACE_ME followed by a crash signal " #sig " in a " \ 1472 "vfork(2)ed child"); \ 1473 } \ 1474 \ 1475 ATF_TC_BODY(test, tc) \ 1476 { \ 1477 \ 1478 traceme_vfork_crash(sig); \ 1479 } 1480 1481 TRACEME_VFORK_CRASH(traceme_vfork_crash_trap, SIGTRAP) 1482 TRACEME_VFORK_CRASH(traceme_vfork_crash_segv, SIGSEGV) 1483 TRACEME_VFORK_CRASH(traceme_vfork_crash_ill, SIGILL) 1484 TRACEME_VFORK_CRASH(traceme_vfork_crash_fpe, SIGFPE) 1485 TRACEME_VFORK_CRASH(traceme_vfork_crash_bus, SIGBUS) 1486 1487 /// ---------------------------------------------------------------------------- 1488 1489 static void 1490 traceme_vfork_signalmasked_crash(int sig) 1491 { 1492 pid_t child, wpid; 1493 #if defined(TWAIT_HAVE_STATUS) 1494 int status; 1495 #endif 1496 sigset_t intmask; 1497 1498 #ifndef PTRACE_ILLEGAL_ASM 1499 if (sig == SIGILL) 1500 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 1501 #endif 1502 1503 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 1504 atf_tc_skip("FP exceptions are not supported"); 1505 1506 DPRINTF("Before forking process PID=%d\n", getpid()); 1507 SYSCALL_REQUIRE((child = vfork()) != -1); 1508 if (child == 0) { 1509 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1510 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1511 1512 sigemptyset(&intmask); 1513 sigaddset(&intmask, sig); 1514 sigprocmask(SIG_BLOCK, &intmask, NULL); 1515 1516 DPRINTF("Before executing a trap\n"); 1517 switch (sig) { 1518 case SIGTRAP: 1519 trigger_trap(); 1520 break; 1521 case SIGSEGV: 1522 trigger_segv(); 1523 break; 1524 case SIGILL: 1525 trigger_ill(); 1526 break; 1527 case SIGFPE: 1528 trigger_fpe(); 1529 break; 1530 case SIGBUS: 1531 trigger_bus(); 1532 break; 1533 default: 1534 /* NOTREACHED */ 1535 FORKEE_ASSERTX(0 && "This shall not be reached"); 1536 } 1537 1538 /* NOTREACHED */ 1539 FORKEE_ASSERTX(0 && "This shall not be reached"); 1540 } 1541 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1542 1543 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1544 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1545 1546 validate_status_signaled(status, sig, 1); 1547 1548 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1549 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1550 } 1551 1552 #define TRACEME_VFORK_SIGNALMASKED_CRASH(test, sig) \ 1553 ATF_TC(test); \ 1554 ATF_TC_HEAD(test, tc) \ 1555 { \ 1556 atf_tc_set_md_var(tc, "descr", \ 1557 "Verify PT_TRACE_ME followed by a crash signal " #sig " in a " \ 1558 "vfork(2)ed child with a masked signal"); \ 1559 } \ 1560 \ 1561 ATF_TC_BODY(test, tc) \ 1562 { \ 1563 \ 1564 traceme_vfork_signalmasked_crash(sig); \ 1565 } 1566 1567 TRACEME_VFORK_SIGNALMASKED_CRASH(traceme_vfork_signalmasked_crash_trap, SIGTRAP) 1568 TRACEME_VFORK_SIGNALMASKED_CRASH(traceme_vfork_signalmasked_crash_segv, SIGSEGV) 1569 TRACEME_VFORK_SIGNALMASKED_CRASH(traceme_vfork_signalmasked_crash_ill, SIGILL) 1570 TRACEME_VFORK_SIGNALMASKED_CRASH(traceme_vfork_signalmasked_crash_fpe, SIGFPE) 1571 TRACEME_VFORK_SIGNALMASKED_CRASH(traceme_vfork_signalmasked_crash_bus, SIGBUS) 1572 1573 /// ---------------------------------------------------------------------------- 1574 1575 static void 1576 traceme_vfork_signalignored_crash(int sig) 1577 { 1578 pid_t child, wpid; 1579 #if defined(TWAIT_HAVE_STATUS) 1580 int status; 1581 #endif 1582 struct sigaction sa; 1583 1584 #ifndef PTRACE_ILLEGAL_ASM 1585 if (sig == SIGILL) 1586 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 1587 #endif 1588 1589 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 1590 atf_tc_skip("FP exceptions are not supported"); 1591 1592 DPRINTF("Before forking process PID=%d\n", getpid()); 1593 SYSCALL_REQUIRE((child = vfork()) != -1); 1594 if (child == 0) { 1595 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 1596 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 1597 1598 memset(&sa, 0, sizeof(sa)); 1599 sa.sa_handler = SIG_IGN; 1600 sigemptyset(&sa.sa_mask); 1601 1602 FORKEE_ASSERT(sigaction(sig, &sa, NULL) != -1); 1603 1604 DPRINTF("Before executing a trap\n"); 1605 switch (sig) { 1606 case SIGTRAP: 1607 trigger_trap(); 1608 break; 1609 case SIGSEGV: 1610 trigger_segv(); 1611 break; 1612 case SIGILL: 1613 trigger_ill(); 1614 break; 1615 case SIGFPE: 1616 trigger_fpe(); 1617 break; 1618 case SIGBUS: 1619 trigger_bus(); 1620 break; 1621 default: 1622 /* NOTREACHED */ 1623 FORKEE_ASSERTX(0 && "This shall not be reached"); 1624 } 1625 1626 /* NOTREACHED */ 1627 FORKEE_ASSERTX(0 && "This shall not be reached"); 1628 } 1629 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 1630 1631 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1632 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 1633 1634 validate_status_signaled(status, sig, 1); 1635 1636 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 1637 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 1638 } 1639 1640 #define TRACEME_VFORK_SIGNALIGNORED_CRASH(test, sig) \ 1641 ATF_TC(test); \ 1642 ATF_TC_HEAD(test, tc) \ 1643 { \ 1644 atf_tc_set_md_var(tc, "descr", \ 1645 "Verify PT_TRACE_ME followed by a crash signal " #sig " in a " \ 1646 "vfork(2)ed child with ignored signal"); \ 1647 } \ 1648 \ 1649 ATF_TC_BODY(test, tc) \ 1650 { \ 1651 \ 1652 traceme_vfork_signalignored_crash(sig); \ 1653 } 1654 1655 TRACEME_VFORK_SIGNALIGNORED_CRASH(traceme_vfork_signalignored_crash_trap, 1656 SIGTRAP) 1657 TRACEME_VFORK_SIGNALIGNORED_CRASH(traceme_vfork_signalignored_crash_segv, 1658 SIGSEGV) 1659 TRACEME_VFORK_SIGNALIGNORED_CRASH(traceme_vfork_signalignored_crash_ill, 1660 SIGILL) 1661 TRACEME_VFORK_SIGNALIGNORED_CRASH(traceme_vfork_signalignored_crash_fpe, 1662 SIGFPE) 1663 TRACEME_VFORK_SIGNALIGNORED_CRASH(traceme_vfork_signalignored_crash_bus, 1664 SIGBUS) 1665 1666 /// ---------------------------------------------------------------------------- 1667 1668 #if defined(TWAIT_HAVE_PID) 1669 static void 1670 unrelated_tracer_sees_crash(int sig, bool masked, bool ignored) 1671 { 1672 const int sigval = SIGSTOP; 1673 struct msg_fds parent_tracee, parent_tracer; 1674 const int exitval = 10; 1675 pid_t tracee, tracer, wpid; 1676 uint8_t msg = 0xde; /* dummy message for IPC based on pipe(2) */ 1677 #if defined(TWAIT_HAVE_STATUS) 1678 int status; 1679 #endif 1680 struct sigaction sa; 1681 struct ptrace_siginfo info; 1682 sigset_t intmask; 1683 struct kinfo_proc2 kp; 1684 size_t len = sizeof(kp); 1685 1686 int name[6]; 1687 const size_t namelen = __arraycount(name); 1688 ki_sigset_t kp_sigmask; 1689 ki_sigset_t kp_sigignore; 1690 1691 #ifndef PTRACE_ILLEGAL_ASM 1692 if (sig == SIGILL) 1693 atf_tc_skip("PTRACE_ILLEGAL_ASM not defined"); 1694 #endif 1695 1696 if (sig == SIGFPE && !are_fpu_exceptions_supported()) 1697 atf_tc_skip("FP exceptions are not supported"); 1698 1699 memset(&info, 0, sizeof(info)); 1700 1701 DPRINTF("Spawn tracee\n"); 1702 SYSCALL_REQUIRE(msg_open(&parent_tracee) == 0); 1703 tracee = atf_utils_fork(); 1704 if (tracee == 0) { 1705 // Wait for parent to let us crash 1706 CHILD_FROM_PARENT("exit tracee", parent_tracee, msg); 1707 1708 if (masked) { 1709 sigemptyset(&intmask); 1710 sigaddset(&intmask, sig); 1711 sigprocmask(SIG_BLOCK, &intmask, NULL); 1712 } 1713 1714 if (ignored) { 1715 memset(&sa, 0, sizeof(sa)); 1716 sa.sa_handler = SIG_IGN; 1717 sigemptyset(&sa.sa_mask); 1718 FORKEE_ASSERT(sigaction(sig, &sa, NULL) != -1); 1719 } 1720 1721 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 1722 FORKEE_ASSERT(raise(sigval) == 0); 1723 1724 DPRINTF("Before executing a trap\n"); 1725 switch (sig) { 1726 case SIGTRAP: 1727 trigger_trap(); 1728 break; 1729 case SIGSEGV: 1730 trigger_segv(); 1731 break; 1732 case SIGILL: 1733 trigger_ill(); 1734 break; 1735 case SIGFPE: 1736 trigger_fpe(); 1737 break; 1738 case SIGBUS: 1739 trigger_bus(); 1740 break; 1741 default: 1742 /* NOTREACHED */ 1743 FORKEE_ASSERTX(0 && "This shall not be reached"); 1744 } 1745 1746 /* NOTREACHED */ 1747 FORKEE_ASSERTX(0 && "This shall not be reached"); 1748 } 1749 1750 DPRINTF("Spawn debugger\n"); 1751 SYSCALL_REQUIRE(msg_open(&parent_tracer) == 0); 1752 tracer = atf_utils_fork(); 1753 if (tracer == 0) { 1754 /* Fork again and drop parent to reattach to PID 1 */ 1755 tracer = atf_utils_fork(); 1756 if (tracer != 0) 1757 _exit(exitval); 1758 1759 DPRINTF("Before calling PT_ATTACH from tracee %d\n", getpid()); 1760 FORKEE_ASSERT(ptrace(PT_ATTACH, tracee, NULL, 0) != -1); 1761 1762 /* Wait for tracee and assert that it was stopped w/ SIGSTOP */ 1763 FORKEE_REQUIRE_SUCCESS( 1764 wpid = TWAIT_GENERIC(tracee, &status, 0), tracee); 1765 1766 forkee_status_stopped(status, SIGSTOP); 1767 1768 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the " 1769 "traced process\n"); 1770 SYSCALL_REQUIRE( 1771 ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1); 1772 1773 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1774 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 1775 "si_errno=%#x\n", info.psi_siginfo.si_signo, 1776 info.psi_siginfo.si_code, info.psi_siginfo.si_errno); 1777 1778 FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, SIGSTOP); 1779 FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_USER); 1780 1781 /* Resume tracee with PT_CONTINUE */ 1782 FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, 0) != -1); 1783 1784 /* Inform parent that tracer has attached to tracee */ 1785 CHILD_TO_PARENT("tracer ready", parent_tracer, msg); 1786 1787 /* Wait for parent to tell use that tracee should have exited */ 1788 CHILD_FROM_PARENT("wait for tracee exit", parent_tracer, msg); 1789 1790 /* Wait for tracee and assert that it exited */ 1791 FORKEE_REQUIRE_SUCCESS( 1792 wpid = TWAIT_GENERIC(tracee, &status, 0), tracee); 1793 1794 forkee_status_stopped(status, sigval); 1795 1796 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the " 1797 "traced process\n"); 1798 SYSCALL_REQUIRE( 1799 ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1); 1800 1801 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1802 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 1803 "si_errno=%#x\n", info.psi_siginfo.si_signo, 1804 info.psi_siginfo.si_code, info.psi_siginfo.si_errno); 1805 1806 FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, sigval); 1807 FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_LWP); 1808 1809 name[0] = CTL_KERN, 1810 name[1] = KERN_PROC2, 1811 name[2] = KERN_PROC_PID; 1812 name[3] = tracee; 1813 name[4] = sizeof(kp); 1814 name[5] = 1; 1815 1816 FORKEE_ASSERT_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 1817 1818 if (masked) 1819 kp_sigmask = kp.p_sigmask; 1820 1821 if (ignored) 1822 kp_sigignore = kp.p_sigignore; 1823 1824 /* Resume tracee with PT_CONTINUE */ 1825 FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, 0) != -1); 1826 1827 /* Wait for tracee and assert that it exited */ 1828 FORKEE_REQUIRE_SUCCESS( 1829 wpid = TWAIT_GENERIC(tracee, &status, 0), tracee); 1830 1831 forkee_status_stopped(status, sig); 1832 1833 DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the " 1834 "traced process\n"); 1835 SYSCALL_REQUIRE( 1836 ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1); 1837 1838 DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid); 1839 DPRINTF("Signal properties: si_signo=%#x si_code=%#x " 1840 "si_errno=%#x\n", info.psi_siginfo.si_signo, 1841 info.psi_siginfo.si_code, info.psi_siginfo.si_errno); 1842 1843 FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, sig); 1844 1845 FORKEE_ASSERT_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0); 1846 1847 if (masked) { 1848 DPRINTF("kp_sigmask=" 1849 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 1850 PRIx32 "\n", 1851 kp_sigmask.__bits[0], kp_sigmask.__bits[1], 1852 kp_sigmask.__bits[2], kp_sigmask.__bits[3]); 1853 1854 DPRINTF("kp.p_sigmask=" 1855 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 1856 PRIx32 "\n", 1857 kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1], 1858 kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]); 1859 1860 FORKEE_ASSERTX(!memcmp(&kp_sigmask, &kp.p_sigmask, 1861 sizeof(kp_sigmask))); 1862 } 1863 1864 if (ignored) { 1865 DPRINTF("kp_sigignore=" 1866 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 1867 PRIx32 "\n", 1868 kp_sigignore.__bits[0], kp_sigignore.__bits[1], 1869 kp_sigignore.__bits[2], kp_sigignore.__bits[3]); 1870 1871 DPRINTF("kp.p_sigignore=" 1872 "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02" 1873 PRIx32 "\n", 1874 kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1], 1875 kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]); 1876 1877 FORKEE_ASSERTX(!memcmp(&kp_sigignore, &kp.p_sigignore, 1878 sizeof(kp_sigignore))); 1879 } 1880 1881 switch (sig) { 1882 case SIGTRAP: 1883 FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, TRAP_BRKPT); 1884 break; 1885 case SIGSEGV: 1886 FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SEGV_MAPERR); 1887 break; 1888 case SIGILL: 1889 FORKEE_ASSERT(info.psi_siginfo.si_code >= ILL_ILLOPC && 1890 info.psi_siginfo.si_code <= ILL_BADSTK); 1891 break; 1892 case SIGFPE: 1893 // XXXQEMU FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, FPE_FLTDIV); 1894 break; 1895 case SIGBUS: 1896 FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, BUS_ADRERR); 1897 break; 1898 } 1899 1900 FORKEE_ASSERT(ptrace(PT_KILL, tracee, NULL, 0) != -1); 1901 DPRINTF("Before calling %s() for the tracee\n", TWAIT_FNAME); 1902 FORKEE_REQUIRE_SUCCESS( 1903 wpid = TWAIT_GENERIC(tracee, &status, 0), tracee); 1904 1905 forkee_status_signaled(status, SIGKILL, 0); 1906 1907 /* Inform parent that tracer is exiting normally */ 1908 CHILD_TO_PARENT("tracer done", parent_tracer, msg); 1909 1910 DPRINTF("Before exiting of the tracer process\n"); 1911 _exit(0 /* collect by initproc */); 1912 } 1913 1914 DPRINTF("Wait for the tracer process (direct child) to exit " 1915 "calling %s()\n", TWAIT_FNAME); 1916 TWAIT_REQUIRE_SUCCESS( 1917 wpid = TWAIT_GENERIC(tracer, &status, 0), tracer); 1918 1919 validate_status_exited(status, exitval); 1920 1921 DPRINTF("Wait for the non-exited tracee process with %s()\n", 1922 TWAIT_FNAME); 1923 TWAIT_REQUIRE_SUCCESS( 1924 wpid = TWAIT_GENERIC(tracee, NULL, WNOHANG), 0); 1925 1926 DPRINTF("Wait for the tracer to attach to the tracee\n"); 1927 PARENT_FROM_CHILD("tracer ready", parent_tracer, msg); 1928 1929 DPRINTF("Resume the tracee and let it crash\n"); 1930 PARENT_TO_CHILD("exit tracee", parent_tracee, msg); 1931 1932 DPRINTF("Resume the tracer and let it detect crashed tracee\n"); 1933 PARENT_TO_CHILD("Message 2", parent_tracer, msg); 1934 1935 DPRINTF("Wait for tracee to finish its job and exit - calling %s()\n", 1936 TWAIT_FNAME); 1937 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(tracee, &status, 0), tracee); 1938 1939 validate_status_signaled(status, SIGKILL, 0); 1940 1941 DPRINTF("Await normal exit of tracer\n"); 1942 PARENT_FROM_CHILD("tracer done", parent_tracer, msg); 1943 1944 msg_close(&parent_tracer); 1945 msg_close(&parent_tracee); 1946 } 1947 1948 #define UNRELATED_TRACER_SEES_CRASH(test, sig) \ 1949 ATF_TC(test); \ 1950 ATF_TC_HEAD(test, tc) \ 1951 { \ 1952 atf_tc_set_md_var(tc, "descr", \ 1953 "Assert that an unrelated tracer sees crash signal from " \ 1954 "the debuggee"); \ 1955 } \ 1956 \ 1957 ATF_TC_BODY(test, tc) \ 1958 { \ 1959 \ 1960 unrelated_tracer_sees_crash(sig, false, false); \ 1961 } 1962 1963 UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_trap, SIGTRAP) 1964 UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_segv, SIGSEGV) 1965 UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_ill, SIGILL) 1966 UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_fpe, SIGFPE) 1967 UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_bus, SIGBUS) 1968 1969 #define UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(test, sig) \ 1970 ATF_TC(test); \ 1971 ATF_TC_HEAD(test, tc) \ 1972 { \ 1973 atf_tc_set_md_var(tc, "descr", \ 1974 "Assert that an unrelated tracer sees crash signal from " \ 1975 "the debuggee with masked signal"); \ 1976 } \ 1977 \ 1978 ATF_TC_BODY(test, tc) \ 1979 { \ 1980 \ 1981 unrelated_tracer_sees_crash(sig, true, false); \ 1982 } 1983 1984 UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH( 1985 unrelated_tracer_sees_signalmasked_crash_trap, SIGTRAP) 1986 UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH( 1987 unrelated_tracer_sees_signalmasked_crash_segv, SIGSEGV) 1988 UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH( 1989 unrelated_tracer_sees_signalmasked_crash_ill, SIGILL) 1990 UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH( 1991 unrelated_tracer_sees_signalmasked_crash_fpe, SIGFPE) 1992 UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH( 1993 unrelated_tracer_sees_signalmasked_crash_bus, SIGBUS) 1994 1995 #define UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(test, sig) \ 1996 ATF_TC(test); \ 1997 ATF_TC_HEAD(test, tc) \ 1998 { \ 1999 atf_tc_set_md_var(tc, "descr", \ 2000 "Assert that an unrelated tracer sees crash signal from " \ 2001 "the debuggee with signal ignored"); \ 2002 } \ 2003 \ 2004 ATF_TC_BODY(test, tc) \ 2005 { \ 2006 \ 2007 unrelated_tracer_sees_crash(sig, false, true); \ 2008 } 2009 2010 UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH( 2011 unrelated_tracer_sees_signalignored_crash_trap, SIGTRAP) 2012 UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH( 2013 unrelated_tracer_sees_signalignored_crash_segv, SIGSEGV) 2014 UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH( 2015 unrelated_tracer_sees_signalignored_crash_ill, SIGILL) 2016 UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH( 2017 unrelated_tracer_sees_signalignored_crash_fpe, SIGFPE) 2018 UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH( 2019 unrelated_tracer_sees_signalignored_crash_bus, SIGBUS) 2020 #endif 2021 2022 /// ---------------------------------------------------------------------------- 2023 2024 ATF_TC(signal_mask_unrelated); 2025 ATF_TC_HEAD(signal_mask_unrelated, tc) 2026 { 2027 atf_tc_set_md_var(tc, "descr", 2028 "Verify that masking single unrelated signal does not stop tracer " 2029 "from catching other signals"); 2030 } 2031 2032 ATF_TC_BODY(signal_mask_unrelated, tc) 2033 { 2034 const int exitval = 5; 2035 const int sigval = SIGSTOP; 2036 const int sigmasked = SIGTRAP; 2037 const int signotmasked = SIGINT; 2038 pid_t child, wpid; 2039 #if defined(TWAIT_HAVE_STATUS) 2040 int status; 2041 #endif 2042 sigset_t intmask; 2043 2044 DPRINTF("Before forking process PID=%d\n", getpid()); 2045 SYSCALL_REQUIRE((child = fork()) != -1); 2046 if (child == 0) { 2047 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 2048 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 2049 2050 sigemptyset(&intmask); 2051 sigaddset(&intmask, sigmasked); 2052 sigprocmask(SIG_BLOCK, &intmask, NULL); 2053 2054 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 2055 FORKEE_ASSERT(raise(sigval) == 0); 2056 2057 DPRINTF("Before raising %s from child\n", 2058 strsignal(signotmasked)); 2059 FORKEE_ASSERT(raise(signotmasked) == 0); 2060 2061 DPRINTF("Before exiting of the child process\n"); 2062 _exit(exitval); 2063 } 2064 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 2065 2066 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 2067 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 2068 2069 validate_status_stopped(status, sigval); 2070 2071 DPRINTF("Before resuming the child process where it left off and " 2072 "without signal to be sent\n"); 2073 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 2074 2075 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 2076 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 2077 2078 validate_status_stopped(status, signotmasked); 2079 2080 DPRINTF("Before resuming the child process where it left off and " 2081 "without signal to be sent\n"); 2082 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 2083 2084 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 2085 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 2086 2087 validate_status_exited(status, exitval); 2088 2089 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 2090 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 2091 } 2092 2093 /// ---------------------------------------------------------------------------- 2094 2095 #define ATF_TP_ADD_TCS_PTRACE_WAIT_SIGNAL() \ 2096 ATF_TP_ADD_TC(tp, traceme_raise1); \ 2097 ATF_TP_ADD_TC(tp, traceme_raise2); \ 2098 ATF_TP_ADD_TC(tp, traceme_raise3); \ 2099 ATF_TP_ADD_TC(tp, traceme_raise4); \ 2100 ATF_TP_ADD_TC(tp, traceme_raise5); \ 2101 ATF_TP_ADD_TC(tp, traceme_raise6); \ 2102 ATF_TP_ADD_TC(tp, traceme_raise7); \ 2103 ATF_TP_ADD_TC(tp, traceme_raise8); \ 2104 ATF_TP_ADD_TC(tp, traceme_raise9); \ 2105 ATF_TP_ADD_TC(tp, traceme_raise10); \ 2106 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored1); \ 2107 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored2); \ 2108 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored3); \ 2109 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored4); \ 2110 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored5); \ 2111 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored6); \ 2112 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored7); \ 2113 ATF_TP_ADD_TC(tp, traceme_raisesignal_ignored8); \ 2114 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked1); \ 2115 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked2); \ 2116 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked3); \ 2117 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked4); \ 2118 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked5); \ 2119 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked6); \ 2120 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked7); \ 2121 ATF_TP_ADD_TC(tp, traceme_raisesignal_masked8); \ 2122 ATF_TP_ADD_TC(tp, traceme_crash_trap); \ 2123 ATF_TP_ADD_TC(tp, traceme_crash_segv); \ 2124 ATF_TP_ADD_TC(tp, traceme_crash_ill); \ 2125 ATF_TP_ADD_TC(tp, traceme_crash_fpe); \ 2126 ATF_TP_ADD_TC(tp, traceme_crash_bus); \ 2127 ATF_TP_ADD_TC(tp, traceme_signalmasked_crash_trap); \ 2128 ATF_TP_ADD_TC(tp, traceme_signalmasked_crash_segv); \ 2129 ATF_TP_ADD_TC(tp, traceme_signalmasked_crash_ill); \ 2130 ATF_TP_ADD_TC(tp, traceme_signalmasked_crash_fpe); \ 2131 ATF_TP_ADD_TC(tp, traceme_signalmasked_crash_bus); \ 2132 ATF_TP_ADD_TC(tp, traceme_signalignored_crash_trap); \ 2133 ATF_TP_ADD_TC(tp, traceme_signalignored_crash_segv); \ 2134 ATF_TP_ADD_TC(tp, traceme_signalignored_crash_ill); \ 2135 ATF_TP_ADD_TC(tp, traceme_signalignored_crash_fpe); \ 2136 ATF_TP_ADD_TC(tp, traceme_signalignored_crash_bus); \ 2137 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle1); \ 2138 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle2); \ 2139 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle3); \ 2140 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle4); \ 2141 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle5); \ 2142 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle6); \ 2143 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle7); \ 2144 ATF_TP_ADD_TC(tp, traceme_sendsignal_handle8); \ 2145 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked1); \ 2146 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked2); \ 2147 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked3); \ 2148 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked4); \ 2149 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked5); \ 2150 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked6); \ 2151 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked7); \ 2152 ATF_TP_ADD_TC(tp, traceme_sendsignal_masked8); \ 2153 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored1); \ 2154 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored2); \ 2155 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored3); \ 2156 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored4); \ 2157 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored5); \ 2158 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored6); \ 2159 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored7); \ 2160 ATF_TP_ADD_TC(tp, traceme_sendsignal_ignored8); \ 2161 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple1); \ 2162 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple2); \ 2163 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple3); \ 2164 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple4); \ 2165 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple5); \ 2166 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple6); \ 2167 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple7); \ 2168 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple8); \ 2169 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple9); \ 2170 ATF_TP_ADD_TC(tp, traceme_sendsignal_simple10); \ 2171 ATF_TP_ADD_TC(tp, traceme_vfork_raise1); \ 2172 ATF_TP_ADD_TC(tp, traceme_vfork_raise2); \ 2173 ATF_TP_ADD_TC(tp, traceme_vfork_raise3); \ 2174 ATF_TP_ADD_TC(tp, traceme_vfork_raise4); \ 2175 ATF_TP_ADD_TC(tp, traceme_vfork_raise5); \ 2176 ATF_TP_ADD_TC(tp, traceme_vfork_raise6); \ 2177 ATF_TP_ADD_TC(tp, traceme_vfork_raise7); \ 2178 ATF_TP_ADD_TC(tp, traceme_vfork_raise8); \ 2179 ATF_TP_ADD_TC(tp, traceme_vfork_raise9); \ 2180 ATF_TP_ADD_TC(tp, traceme_vfork_raise10); \ 2181 ATF_TP_ADD_TC(tp, traceme_vfork_raise11); \ 2182 ATF_TP_ADD_TC(tp, traceme_vfork_raise12); \ 2183 ATF_TP_ADD_TC(tp, traceme_vfork_raise13); \ 2184 ATF_TP_ADD_TC(tp, traceme_vfork_crash_trap); \ 2185 ATF_TP_ADD_TC(tp, traceme_vfork_crash_segv); \ 2186 ATF_TP_ADD_TC(tp, traceme_vfork_crash_ill); \ 2187 ATF_TP_ADD_TC(tp, traceme_vfork_crash_fpe); \ 2188 ATF_TP_ADD_TC(tp, traceme_vfork_crash_bus); \ 2189 ATF_TP_ADD_TC(tp, traceme_vfork_signalmasked_crash_trap); \ 2190 ATF_TP_ADD_TC(tp, traceme_vfork_signalmasked_crash_segv); \ 2191 ATF_TP_ADD_TC(tp, traceme_vfork_signalmasked_crash_ill); \ 2192 ATF_TP_ADD_TC(tp, traceme_vfork_signalmasked_crash_fpe); \ 2193 ATF_TP_ADD_TC(tp, traceme_vfork_signalmasked_crash_bus); \ 2194 ATF_TP_ADD_TC(tp, traceme_vfork_signalignored_crash_trap); \ 2195 ATF_TP_ADD_TC(tp, traceme_vfork_signalignored_crash_segv); \ 2196 ATF_TP_ADD_TC(tp, traceme_vfork_signalignored_crash_ill); \ 2197 ATF_TP_ADD_TC(tp, traceme_vfork_signalignored_crash_fpe); \ 2198 ATF_TP_ADD_TC(tp, traceme_vfork_signalignored_crash_bus); \ 2199 ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_trap); \ 2200 ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_segv); \ 2201 ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_ill); \ 2202 ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_fpe); \ 2203 ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_bus); \ 2204 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2205 unrelated_tracer_sees_signalmasked_crash_trap); \ 2206 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2207 unrelated_tracer_sees_signalmasked_crash_segv); \ 2208 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2209 unrelated_tracer_sees_signalmasked_crash_ill); \ 2210 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2211 unrelated_tracer_sees_signalmasked_crash_fpe); \ 2212 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2213 unrelated_tracer_sees_signalmasked_crash_bus); \ 2214 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2215 unrelated_tracer_sees_signalignored_crash_trap); \ 2216 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2217 unrelated_tracer_sees_signalignored_crash_segv); \ 2218 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2219 unrelated_tracer_sees_signalignored_crash_ill); \ 2220 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2221 unrelated_tracer_sees_signalignored_crash_fpe); \ 2222 ATF_TP_ADD_TC_HAVE_PID(tp, \ 2223 unrelated_tracer_sees_signalignored_crash_bus); \ 2224 ATF_TP_ADD_TC(tp, signal_mask_unrelated); 2225
Indexes created Wed Sep 24 15:09:51 GMT 2025