1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #define _GNU_SOURCE 4 #define _LARGEFILE64_SOURCE 5 6 /* libc-specific include files 7 * The program may be built in 3 ways: 8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined 9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present 10 * $(CC) with default libc => NOLIBC* never defined 11 */ 12 #ifndef NOLIBC 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 #ifndef _NOLIBC_STDIO_H 17 /* standard libcs need more includes */ 18 #include <sys/auxv.h> 19 #include <sys/io.h> 20 #include <sys/ioctl.h> 21 #include <sys/mman.h> 22 #include <sys/mount.h> 23 #include <sys/prctl.h> 24 #include <sys/reboot.h> 25 #include <sys/resource.h> 26 #include <sys/stat.h> 27 #include <sys/syscall.h> 28 #include <sys/sysmacros.h> 29 #include <sys/time.h> 30 #include <sys/utsname.h> 31 #include <sys/wait.h> 32 #include <dirent.h> 33 #include <errno.h> 34 #include <fcntl.h> 35 #include <poll.h> 36 #include <sched.h> 37 #include <signal.h> 38 #include <stdarg.h> 39 #include <stddef.h> 40 #include <stdint.h> 41 #include <unistd.h> 42 #include <limits.h> 43 #endif 44 #endif 45 46 #pragma GCC diagnostic ignored "-Wmissing-prototypes" 47 48 #include "nolibc-test-linkage.h" 49 50 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 51 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 52 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 53 54 /* will be used to test initialization of environ */ 55 static char **test_envp; 56 57 /* will be used to test initialization of argv */ 58 static char **test_argv; 59 60 /* will be used to test initialization of argc */ 61 static int test_argc; 62 63 /* will be used by some test cases as readable file, please don't write it */ 64 static const char *argv0; 65 66 /* will be used by constructor tests */ 67 static int constructor_test_value; 68 69 static const int is_nolibc = 70 #ifdef NOLIBC 71 1 72 #else 73 0 74 #endif 75 ; 76 77 /* definition of a series of tests */ 78 struct test { 79 const char *name; /* test name */ 80 int (*func)(int min, int max); /* handler */ 81 }; 82 83 #ifndef _NOLIBC_STDLIB_H 84 char *itoa(int i) 85 { 86 static char buf[12]; 87 int ret; 88 89 ret = snprintf(buf, sizeof(buf), "%d", i); 90 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 91 } 92 #endif 93 94 #define CASE_ERR(err) \ 95 case err: return #err 96 97 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 98 * or the decimal value for less common ones. 99 */ 100 static const char *errorname(int err) 101 { 102 switch (err) { 103 case 0: return "SUCCESS"; 104 CASE_ERR(EPERM); 105 CASE_ERR(ENOENT); 106 CASE_ERR(ESRCH); 107 CASE_ERR(EINTR); 108 CASE_ERR(EIO); 109 CASE_ERR(ENXIO); 110 CASE_ERR(E2BIG); 111 CASE_ERR(ENOEXEC); 112 CASE_ERR(EBADF); 113 CASE_ERR(ECHILD); 114 CASE_ERR(EAGAIN); 115 CASE_ERR(ENOMEM); 116 CASE_ERR(EACCES); 117 CASE_ERR(EFAULT); 118 CASE_ERR(ENOTBLK); 119 CASE_ERR(EBUSY); 120 CASE_ERR(EEXIST); 121 CASE_ERR(EXDEV); 122 CASE_ERR(ENODEV); 123 CASE_ERR(ENOTDIR); 124 CASE_ERR(EISDIR); 125 CASE_ERR(EINVAL); 126 CASE_ERR(ENFILE); 127 CASE_ERR(EMFILE); 128 CASE_ERR(ENOTTY); 129 CASE_ERR(ETXTBSY); 130 CASE_ERR(EFBIG); 131 CASE_ERR(ENOSPC); 132 CASE_ERR(ESPIPE); 133 CASE_ERR(EROFS); 134 CASE_ERR(EMLINK); 135 CASE_ERR(EPIPE); 136 CASE_ERR(EDOM); 137 CASE_ERR(ERANGE); 138 CASE_ERR(ENOSYS); 139 CASE_ERR(EOVERFLOW); 140 default: 141 return itoa(err); 142 } 143 } 144 145 static void align_result(size_t llen) 146 { 147 const size_t align = 64; 148 char buf[align]; 149 size_t n; 150 151 if (llen >= align) 152 return; 153 154 n = align - llen; 155 memset(buf, ' ', n); 156 buf[n] = '\0'; 157 fputs(buf, stdout); 158 } 159 160 enum RESULT { 161 OK, 162 FAIL, 163 SKIPPED, 164 }; 165 166 static void result(int llen, enum RESULT r) 167 { 168 const char *msg; 169 170 if (r == OK) 171 msg = " [OK]"; 172 else if (r == SKIPPED) 173 msg = "[SKIPPED]"; 174 else 175 msg = " [FAIL]"; 176 177 align_result(llen); 178 puts(msg); 179 } 180 181 /* The tests below are intended to be used by the macroes, which evaluate 182 * expression <expr>, print the status to stdout, and update the "ret" 183 * variable to count failures. The functions themselves return the number 184 * of failures, thus either 0 or 1. 185 */ 186 187 #define EXPECT_ZR(cond, expr) \ 188 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 189 190 static __attribute__((unused)) 191 int expect_zr(int expr, int llen) 192 { 193 int ret = !(expr == 0); 194 195 llen += printf(" = %d ", expr); 196 result(llen, ret ? FAIL : OK); 197 return ret; 198 } 199 200 201 #define EXPECT_NZ(cond, expr, val) \ 202 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 203 204 static __attribute__((unused)) 205 int expect_nz(int expr, int llen) 206 { 207 int ret = !(expr != 0); 208 209 llen += printf(" = %d ", expr); 210 result(llen, ret ? FAIL : OK); 211 return ret; 212 } 213 214 215 #define EXPECT_EQ(cond, expr, val) \ 216 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 217 218 static __attribute__((unused)) 219 int expect_eq(uint64_t expr, int llen, uint64_t val) 220 { 221 int ret = !(expr == val); 222 223 llen += printf(" = %lld ", (long long)expr); 224 result(llen, ret ? FAIL : OK); 225 return ret; 226 } 227 228 229 #define EXPECT_NE(cond, expr, val) \ 230 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 231 232 static __attribute__((unused)) 233 int expect_ne(int expr, int llen, int val) 234 { 235 int ret = !(expr != val); 236 237 llen += printf(" = %d ", expr); 238 result(llen, ret ? FAIL : OK); 239 return ret; 240 } 241 242 243 #define EXPECT_GE(cond, expr, val) \ 244 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 245 246 static __attribute__((unused)) 247 int expect_ge(int expr, int llen, int val) 248 { 249 int ret = !(expr >= val); 250 251 llen += printf(" = %d ", expr); 252 result(llen, ret ? FAIL : OK); 253 return ret; 254 } 255 256 257 #define EXPECT_GT(cond, expr, val) \ 258 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 259 260 static __attribute__((unused)) 261 int expect_gt(int expr, int llen, int val) 262 { 263 int ret = !(expr > val); 264 265 llen += printf(" = %d ", expr); 266 result(llen, ret ? FAIL : OK); 267 return ret; 268 } 269 270 271 #define EXPECT_LE(cond, expr, val) \ 272 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 273 274 static __attribute__((unused)) 275 int expect_le(int expr, int llen, int val) 276 { 277 int ret = !(expr <= val); 278 279 llen += printf(" = %d ", expr); 280 result(llen, ret ? FAIL : OK); 281 return ret; 282 } 283 284 285 #define EXPECT_LT(cond, expr, val) \ 286 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 287 288 static __attribute__((unused)) 289 int expect_lt(int expr, int llen, int val) 290 { 291 int ret = !(expr < val); 292 293 llen += printf(" = %d ", expr); 294 result(llen, ret ? FAIL : OK); 295 return ret; 296 } 297 298 299 #define EXPECT_SYSZR(cond, expr) \ 300 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 301 302 static __attribute__((unused)) 303 int expect_syszr(int expr, int llen) 304 { 305 int ret = 0; 306 307 if (errno == ENOSYS) { 308 llen += printf(" = ENOSYS"); 309 result(llen, SKIPPED); 310 } else if (expr) { 311 ret = 1; 312 llen += printf(" = %d %s ", expr, errorname(errno)); 313 result(llen, FAIL); 314 } else { 315 llen += printf(" = %d ", expr); 316 result(llen, OK); 317 } 318 return ret; 319 } 320 321 322 #define EXPECT_SYSEQ(cond, expr, val) \ 323 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 324 325 static __attribute__((unused)) 326 int expect_syseq(int expr, int llen, int val) 327 { 328 int ret = 0; 329 330 if (expr != val) { 331 ret = 1; 332 llen += printf(" = %d %s ", expr, errorname(errno)); 333 result(llen, FAIL); 334 } else { 335 llen += printf(" = %d ", expr); 336 result(llen, OK); 337 } 338 return ret; 339 } 340 341 342 #define EXPECT_SYSNE(cond, expr, val) \ 343 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 344 345 static __attribute__((unused)) 346 int expect_sysne(int expr, int llen, int val) 347 { 348 int ret = 0; 349 350 if (errno == ENOSYS) { 351 llen += printf(" = ENOSYS"); 352 result(llen, SKIPPED); 353 } else if (expr == val) { 354 ret = 1; 355 llen += printf(" = %d %s ", expr, errorname(errno)); 356 result(llen, FAIL); 357 } else { 358 llen += printf(" = %d ", expr); 359 result(llen, OK); 360 } 361 return ret; 362 } 363 364 365 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 366 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 367 368 #define EXPECT_SYSER(cond, expr, expret, experr) \ 369 EXPECT_SYSER2(cond, expr, expret, experr, 0) 370 371 static __attribute__((unused)) 372 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 373 { 374 int ret = 0; 375 int _errno = errno; 376 377 llen += printf(" = %d %s ", expr, errorname(_errno)); 378 if (errno == ENOSYS) { 379 result(llen, SKIPPED); 380 } else if (expr != expret || (_errno != experr1 && _errno != experr2)) { 381 ret = 1; 382 if (experr2 == 0) 383 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 384 else 385 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 386 result(llen, FAIL); 387 } else { 388 result(llen, OK); 389 } 390 return ret; 391 } 392 393 394 #define EXPECT_PTRZR(cond, expr) \ 395 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 396 397 static __attribute__((unused)) 398 int expect_ptrzr(const void *expr, int llen) 399 { 400 int ret = 0; 401 402 llen += printf(" = <%p> ", expr); 403 if (expr) { 404 ret = 1; 405 result(llen, FAIL); 406 } else { 407 result(llen, OK); 408 } 409 return ret; 410 } 411 412 413 #define EXPECT_PTRNZ(cond, expr) \ 414 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 415 416 static __attribute__((unused)) 417 int expect_ptrnz(const void *expr, int llen) 418 { 419 int ret = 0; 420 421 llen += printf(" = <%p> ", expr); 422 if (!expr) { 423 ret = 1; 424 result(llen, FAIL); 425 } else { 426 result(llen, OK); 427 } 428 return ret; 429 } 430 431 #define EXPECT_PTREQ(cond, expr, cmp) \ 432 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 433 434 static __attribute__((unused)) 435 int expect_ptreq(const void *expr, int llen, const void *cmp) 436 { 437 int ret = 0; 438 439 llen += printf(" = <%p> ", expr); 440 if (expr != cmp) { 441 ret = 1; 442 result(llen, FAIL); 443 } else { 444 result(llen, OK); 445 } 446 return ret; 447 } 448 449 #define EXPECT_PTRNE(cond, expr, cmp) \ 450 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 451 452 static __attribute__((unused)) 453 int expect_ptrne(const void *expr, int llen, const void *cmp) 454 { 455 int ret = 0; 456 457 llen += printf(" = <%p> ", expr); 458 if (expr == cmp) { 459 ret = 1; 460 result(llen, FAIL); 461 } else { 462 result(llen, OK); 463 } 464 return ret; 465 } 466 467 #define EXPECT_PTRGE(cond, expr, cmp) \ 468 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 469 470 static __attribute__((unused)) 471 int expect_ptrge(const void *expr, int llen, const void *cmp) 472 { 473 int ret = !(expr >= cmp); 474 475 llen += printf(" = <%p> ", expr); 476 result(llen, ret ? FAIL : OK); 477 return ret; 478 } 479 480 #define EXPECT_PTRGT(cond, expr, cmp) \ 481 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 482 483 static __attribute__((unused)) 484 int expect_ptrgt(const void *expr, int llen, const void *cmp) 485 { 486 int ret = !(expr > cmp); 487 488 llen += printf(" = <%p> ", expr); 489 result(llen, ret ? FAIL : OK); 490 return ret; 491 } 492 493 494 #define EXPECT_PTRLE(cond, expr, cmp) \ 495 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 496 497 static __attribute__((unused)) 498 int expect_ptrle(const void *expr, int llen, const void *cmp) 499 { 500 int ret = !(expr <= cmp); 501 502 llen += printf(" = <%p> ", expr); 503 result(llen, ret ? FAIL : OK); 504 return ret; 505 } 506 507 508 #define EXPECT_PTRLT(cond, expr, cmp) \ 509 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 510 511 static __attribute__((unused)) 512 int expect_ptrlt(const void *expr, int llen, const void *cmp) 513 { 514 int ret = !(expr < cmp); 515 516 llen += printf(" = <%p> ", expr); 517 result(llen, ret ? FAIL : OK); 518 return ret; 519 } 520 521 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 522 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 523 524 #define EXPECT_PTRER(cond, expr, expret, experr) \ 525 EXPECT_PTRER2(cond, expr, expret, experr, 0) 526 527 static __attribute__((unused)) 528 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 529 { 530 int ret = 0; 531 int _errno = errno; 532 533 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 534 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 535 ret = 1; 536 if (experr2 == 0) 537 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 538 else 539 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 540 result(llen, FAIL); 541 } else { 542 result(llen, OK); 543 } 544 return ret; 545 } 546 547 #define EXPECT_STRZR(cond, expr) \ 548 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 549 550 static __attribute__((unused)) 551 int expect_strzr(const char *expr, int llen) 552 { 553 int ret = 0; 554 555 llen += printf(" = <%s> ", expr ? expr : "(null)"); 556 if (expr) { 557 ret = 1; 558 result(llen, FAIL); 559 } else { 560 result(llen, OK); 561 } 562 return ret; 563 } 564 565 566 #define EXPECT_STRNZ(cond, expr) \ 567 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 568 569 static __attribute__((unused)) 570 int expect_strnz(const char *expr, int llen) 571 { 572 int ret = 0; 573 574 llen += printf(" = <%s> ", expr ? expr : "(null)"); 575 if (!expr) { 576 ret = 1; 577 result(llen, FAIL); 578 } else { 579 result(llen, OK); 580 } 581 return ret; 582 } 583 584 585 #define EXPECT_STREQ(cond, expr, cmp) \ 586 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 587 588 static __attribute__((unused)) 589 int expect_streq(const char *expr, int llen, const char *cmp) 590 { 591 int ret = 0; 592 593 llen += printf(" = <%s> ", expr); 594 if (strcmp(expr, cmp) != 0) { 595 ret = 1; 596 result(llen, FAIL); 597 } else { 598 result(llen, OK); 599 } 600 return ret; 601 } 602 603 604 #define EXPECT_STRNE(cond, expr, cmp) \ 605 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 606 607 static __attribute__((unused)) 608 int expect_strne(const char *expr, int llen, const char *cmp) 609 { 610 int ret = 0; 611 612 llen += printf(" = <%s> ", expr); 613 if (strcmp(expr, cmp) == 0) { 614 ret = 1; 615 result(llen, FAIL); 616 } else { 617 result(llen, OK); 618 } 619 return ret; 620 } 621 622 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \ 623 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0) 624 625 static __attribute__((unused)) 626 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp) 627 { 628 llen += printf(" = %lu <%s> ", (unsigned long)expr, buf); 629 if (strcmp(buf, cmp) != 0) { 630 result(llen, FAIL); 631 return 1; 632 } 633 if (expr != val) { 634 result(llen, FAIL); 635 return 1; 636 } 637 638 result(llen, OK); 639 return 0; 640 } 641 642 #define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \ 643 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0) 644 645 static __attribute__((unused)) 646 int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno) 647 { 648 char *endptr; 649 int actual_errno, actual_chars; 650 intmax_t r; 651 652 errno = 0; 653 if (func == strtol) { 654 r = strtol(input, &endptr, base); 655 } else if (func == strtoul) { 656 r = strtoul(input, &endptr, base); 657 } else { 658 result(llen, FAIL); 659 return 1; 660 } 661 actual_errno = errno; 662 actual_chars = endptr - input; 663 664 llen += printf(" %lld = %lld", (long long)expected, (long long)r); 665 if (r != expected) { 666 result(llen, FAIL); 667 return 1; 668 } 669 if (expected_chars == -1) { 670 if (*endptr != '\0') { 671 result(llen, FAIL); 672 return 1; 673 } 674 } else if (expected_chars != actual_chars) { 675 result(llen, FAIL); 676 return 1; 677 } 678 if (actual_errno != expected_errno) { 679 result(llen, FAIL); 680 return 1; 681 } 682 683 result(llen, OK); 684 return 0; 685 } 686 687 /* declare tests based on line numbers. There must be exactly one test per line. */ 688 #define CASE_TEST(name) \ 689 case __LINE__: llen += printf("%d %s", test, #name); 690 691 /* constructors validate that they are executed in definition order */ 692 __attribute__((constructor)) 693 static void constructor1(void) 694 { 695 constructor_test_value |= 1 << 0; 696 } 697 698 __attribute__((constructor)) 699 static void constructor2(int argc, char **argv, char **envp) 700 { 701 if (argc && argv && envp) 702 constructor_test_value |= 1 << 1; 703 } 704 705 int run_startup(int min, int max) 706 { 707 int test; 708 int ret = 0; 709 /* kernel at least passes HOME and TERM, shell passes more */ 710 int env_total = 2; 711 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 712 extern char end; 713 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 714 /* differ from nolibc, both glibc and musl have no global _auxv */ 715 const unsigned long *test_auxv = (void *)-1; 716 #ifdef NOLIBC 717 test_auxv = _auxv; 718 #endif 719 720 for (test = min; test >= 0 && test <= max; test++) { 721 int llen = 0; /* line length */ 722 723 /* avoid leaving empty lines below, this will insert holes into 724 * test numbers. 725 */ 726 switch (test + __LINE__ + 1) { 727 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 728 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 729 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 730 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 731 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 732 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 733 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 734 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 735 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 736 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 737 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 738 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 739 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 740 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 741 CASE_TEST(constructor); EXPECT_EQ(is_nolibc, constructor_test_value, 0x3); break; 742 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break; 743 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 0x3); break; 744 case __LINE__: 745 return ret; /* must be last */ 746 /* note: do not set any defaults so as to permit holes above */ 747 } 748 } 749 return ret; 750 } 751 752 753 /* used by some syscall tests below */ 754 int test_getdents64(const char *dir) 755 { 756 char buffer[4096]; 757 int fd, ret; 758 int err; 759 760 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 761 if (ret < 0) 762 return ret; 763 764 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 765 err = errno; 766 close(fd); 767 768 errno = err; 769 return ret; 770 } 771 772 static int test_dirent(void) 773 { 774 int comm = 0, cmdline = 0; 775 struct dirent dirent, *result; 776 DIR *dir; 777 int ret; 778 779 dir = opendir("/proc/self"); 780 if (!dir) 781 return 1; 782 783 while (1) { 784 errno = 0; 785 ret = readdir_r(dir, &dirent, &result); 786 if (ret != 0) 787 return 1; 788 if (!result) 789 break; 790 791 if (strcmp(dirent.d_name, "comm") == 0) 792 comm++; 793 else if (strcmp(dirent.d_name, "cmdline") == 0) 794 cmdline++; 795 } 796 797 if (errno) 798 return 1; 799 800 ret = closedir(dir); 801 if (ret) 802 return 1; 803 804 if (comm != 1 || cmdline != 1) 805 return 1; 806 807 return 0; 808 } 809 810 int test_getpagesize(void) 811 { 812 int x = getpagesize(); 813 int c; 814 815 if (x < 0) 816 return x; 817 818 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 819 /* 820 * x86 family is always 4K page. 821 */ 822 c = (x == 4096); 823 #elif defined(__aarch64__) 824 /* 825 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 826 * which are selected at kernel compilation time. 827 */ 828 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 829 #else 830 /* 831 * Assuming other architectures must have at least 4K page. 832 */ 833 c = (x >= 4096); 834 #endif 835 836 return !c; 837 } 838 839 int test_fork(void) 840 { 841 int status; 842 pid_t pid; 843 844 /* flush the printf buffer to avoid child flush it */ 845 fflush(stdout); 846 fflush(stderr); 847 848 pid = fork(); 849 850 switch (pid) { 851 case -1: 852 return 1; 853 854 case 0: 855 exit(123); 856 857 default: 858 pid = waitpid(pid, &status, 0); 859 860 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 861 } 862 } 863 864 int test_stat_timestamps(void) 865 { 866 struct stat st; 867 868 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 869 return 1; 870 871 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 872 return 1; 873 874 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 875 return 1; 876 877 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 878 return 1; 879 880 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 881 return 1; 882 883 return 0; 884 } 885 886 int test_uname(void) 887 { 888 struct utsname buf; 889 char osrelease[sizeof(buf.release)]; 890 ssize_t r; 891 int fd; 892 893 memset(&buf.domainname, 'P', sizeof(buf.domainname)); 894 895 if (uname(&buf)) 896 return 1; 897 898 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname))) 899 return 1; 900 901 fd = open("/proc/sys/kernel/osrelease", O_RDONLY); 902 if (fd == -1) 903 return 1; 904 905 r = read(fd, osrelease, sizeof(osrelease)); 906 if (r == -1) 907 return 1; 908 909 close(fd); 910 911 if (osrelease[r - 1] == '\n') 912 r--; 913 914 /* Validate one of the later fields to ensure field sizes are correct */ 915 if (strncmp(osrelease, buf.release, r)) 916 return 1; 917 918 /* Ensure the field domainname is set, it is missing from struct old_utsname */ 919 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname)) 920 return 1; 921 922 return 0; 923 } 924 925 int test_mmap_munmap(void) 926 { 927 int ret, fd, i, page_size; 928 void *mem; 929 size_t file_size, length; 930 off_t offset, pa_offset; 931 struct stat stat_buf; 932 const char * const files[] = { 933 "/dev/zero", 934 "/proc/1/exe", "/proc/self/exe", 935 argv0, 936 NULL 937 }; 938 939 page_size = getpagesize(); 940 if (page_size < 0) 941 return 1; 942 943 /* find a right file to mmap, existed and accessible */ 944 for (i = 0; files[i] != NULL; i++) { 945 ret = fd = open(files[i], O_RDONLY); 946 if (ret == -1) 947 continue; 948 else 949 break; 950 } 951 if (ret == -1) 952 return 1; 953 954 ret = stat(files[i], &stat_buf); 955 if (ret == -1) 956 goto end; 957 958 /* file size of the special /dev/zero is 0, let's assign one manually */ 959 if (i == 0) 960 file_size = 3*page_size; 961 else 962 file_size = stat_buf.st_size; 963 964 offset = file_size - 1; 965 if (offset < 0) 966 offset = 0; 967 length = file_size - offset; 968 pa_offset = offset & ~(page_size - 1); 969 970 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 971 if (mem == MAP_FAILED) { 972 ret = 1; 973 goto end; 974 } 975 976 ret = munmap(mem, length + offset - pa_offset); 977 978 end: 979 close(fd); 980 return !!ret; 981 } 982 983 int test_pipe(void) 984 { 985 const char *const msg = "hello, nolibc"; 986 int pipefd[2]; 987 char buf[32]; 988 size_t len; 989 990 if (pipe(pipefd) == -1) 991 return 1; 992 993 write(pipefd[1], msg, strlen(msg)); 994 close(pipefd[1]); 995 len = read(pipefd[0], buf, sizeof(buf)); 996 close(pipefd[0]); 997 998 if (len != strlen(msg)) 999 return 1; 1000 1001 return !!memcmp(buf, msg, len); 1002 } 1003 1004 int test_rlimit(void) 1005 { 1006 struct rlimit rlim = { 1007 .rlim_cur = 1 << 20, 1008 .rlim_max = 1 << 21, 1009 }; 1010 int ret; 1011 1012 ret = setrlimit(RLIMIT_CORE, &rlim); 1013 if (ret) 1014 return -1; 1015 1016 rlim.rlim_cur = 0; 1017 rlim.rlim_max = 0; 1018 1019 ret = getrlimit(RLIMIT_CORE, &rlim); 1020 if (ret) 1021 return -1; 1022 1023 if (rlim.rlim_cur != 1 << 20) 1024 return -1; 1025 if (rlim.rlim_max != 1 << 21) 1026 return -1; 1027 1028 return 0; 1029 } 1030 1031 int test_openat(void) 1032 { 1033 int dev, null; 1034 1035 dev = openat(AT_FDCWD, "/dev", O_DIRECTORY); 1036 if (dev < 0) 1037 return -1; 1038 1039 null = openat(dev, "null", O_RDONLY); 1040 close(dev); 1041 if (null < 0) 1042 return -1; 1043 1044 close(null); 1045 return 0; 1046 } 1047 1048 /* Run syscall tests between IDs <min> and <max>. 1049 * Return 0 on success, non-zero on failure. 1050 */ 1051 int run_syscall(int min, int max) 1052 { 1053 struct timeval tv; 1054 struct timezone tz; 1055 struct stat stat_buf; 1056 int euid0; 1057 int proc; 1058 int test; 1059 int tmp; 1060 int ret = 0; 1061 void *p1, *p2; 1062 int has_gettid = 1; 1063 int has_brk; 1064 1065 /* <proc> indicates whether or not /proc is mounted */ 1066 proc = stat("/proc", &stat_buf) == 0; 1067 1068 /* this will be used to skip certain tests that can't be run unprivileged */ 1069 euid0 = geteuid() == 0; 1070 1071 /* from 2.30, glibc provides gettid() */ 1072 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 1073 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 1074 #endif 1075 1076 /* on musl setting brk()/sbrk() always fails */ 1077 has_brk = brk(0) == 0; 1078 1079 for (test = min; test >= 0 && test <= max; test++) { 1080 int llen = 0; /* line length */ 1081 1082 /* avoid leaving empty lines below, this will insert holes into 1083 * test numbers. 1084 */ 1085 switch (test + __LINE__ + 1) { 1086 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 1087 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 1088 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 1089 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 1090 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 1091 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1092 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1093 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 1094 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break; 1095 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break; 1096 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break; 1097 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 1098 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 1099 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 1100 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 1101 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 1102 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 1103 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 1104 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 1105 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 1106 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 1107 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 1108 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1109 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1110 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1111 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1112 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1113 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1114 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 1115 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 1116 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 1117 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 1118 CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break; 1119 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 1120 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 1121 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 1122 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 1123 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 1124 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 1125 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 1126 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 1127 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 1128 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 1129 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 1130 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 1131 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 1132 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 1133 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break; 1134 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break; 1135 CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break; 1136 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 1137 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 1138 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 1139 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 1140 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 1141 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 1142 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break; 1143 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 1144 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 1145 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 1146 CASE_TEST(select_stdout); EXPECT_SYSNE(1, ({ fd_set fds; FD_ZERO(&fds); FD_SET(1, &fds); select(2, NULL, &fds, NULL, NULL); }), -1); break; 1147 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 1148 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 1149 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 1150 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 1151 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 1152 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break; 1153 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break; 1154 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 1155 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 1156 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 1157 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 1158 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 1159 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 1160 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 1161 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 1162 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 1163 case __LINE__: 1164 return ret; /* must be last */ 1165 /* note: do not set any defaults so as to permit holes above */ 1166 } 1167 } 1168 return ret; 1169 } 1170 1171 int run_stdlib(int min, int max) 1172 { 1173 int test; 1174 int ret = 0; 1175 1176 for (test = min; test >= 0 && test <= max; test++) { 1177 int llen = 0; /* line length */ 1178 1179 /* For functions that take a long buffer, like strlcat() 1180 * Add some more chars after the \0, to test functions that overwrite the buffer set 1181 * the \0 at the exact right position. 1182 */ 1183 char buf[10] = "test123456"; 1184 buf[4] = '\0'; 1185 1186 1187 /* avoid leaving empty lines below, this will insert holes into 1188 * test numbers. 1189 */ 1190 switch (test + __LINE__ + 1) { 1191 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 1192 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 1193 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 1194 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 1195 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 1196 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 1197 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 1198 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 1199 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 1200 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 1201 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 1202 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 1203 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break; 1204 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break; 1205 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break; 1206 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break; 1207 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break; 1208 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break; 1209 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break; 1210 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break; 1211 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break; 1212 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break; 1213 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break; 1214 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 1215 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 1216 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 1217 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 1218 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 1219 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 1220 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 1221 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 1222 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 1223 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 1224 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 1225 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 1226 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 1227 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 1228 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 1229 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 1230 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 1231 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 1232 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 1233 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 1234 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 1235 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 1236 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1237 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1238 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1239 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1240 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1241 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1242 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1243 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1244 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1245 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1246 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1247 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1248 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1249 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1250 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1251 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1252 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1253 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1254 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1255 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1256 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1257 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1258 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1259 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1260 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1261 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1262 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1263 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1264 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break; 1265 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break; 1266 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break; 1267 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break; 1268 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break; 1269 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break; 1270 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break; 1271 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break; 1272 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break; 1273 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break; 1274 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break; 1275 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break; 1276 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break; 1277 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break; 1278 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break; 1279 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break; 1280 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break; 1281 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break; 1282 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break; 1283 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break; 1284 1285 case __LINE__: 1286 return ret; /* must be last */ 1287 /* note: do not set any defaults so as to permit holes above */ 1288 } 1289 } 1290 return ret; 1291 } 1292 1293 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1294 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1295 1296 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1297 { 1298 int ret, pipefd[2]; 1299 ssize_t w, r; 1300 char buf[100]; 1301 FILE *memfile; 1302 va_list args; 1303 1304 ret = pipe(pipefd); 1305 if (ret == -1) { 1306 llen += printf(" pipe() != %s", strerror(errno)); 1307 result(llen, FAIL); 1308 return 1; 1309 } 1310 1311 memfile = fdopen(pipefd[1], "w"); 1312 if (!memfile) { 1313 result(llen, FAIL); 1314 return 1; 1315 } 1316 1317 va_start(args, fmt); 1318 w = vfprintf(memfile, fmt, args); 1319 va_end(args); 1320 1321 if (w != c) { 1322 llen += printf(" written(%d) != %d", (int)w, c); 1323 result(llen, FAIL); 1324 return 1; 1325 } 1326 1327 fclose(memfile); 1328 1329 r = read(pipefd[0], buf, sizeof(buf) - 1); 1330 1331 if (r != w) { 1332 llen += printf(" written(%d) != read(%d)", (int)w, (int)r); 1333 result(llen, FAIL); 1334 return 1; 1335 } 1336 1337 buf[r] = '\0'; 1338 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1339 ret = strncmp(expected, buf, c); 1340 1341 result(llen, ret ? FAIL : OK); 1342 return ret; 1343 } 1344 1345 static int test_scanf(void) 1346 { 1347 unsigned long long ull; 1348 unsigned long ul; 1349 unsigned int u; 1350 long long ll; 1351 long l; 1352 void *p; 1353 int i; 1354 1355 /* return __LINE__ to point to the specific failure */ 1356 1357 /* test EOF */ 1358 if (sscanf("", "foo") != EOF) 1359 return __LINE__; 1360 1361 /* test simple literal without placeholder */ 1362 if (sscanf("foo", "foo") != 0) 1363 return __LINE__; 1364 1365 /* test single placeholder */ 1366 if (sscanf("123", "%d", &i) != 1) 1367 return __LINE__; 1368 1369 if (i != 123) 1370 return __LINE__; 1371 1372 /* test multiple place holders and separators */ 1373 if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3) 1374 return __LINE__; 1375 1376 if (i != 123) 1377 return __LINE__; 1378 1379 if (u != 456) 1380 return __LINE__; 1381 1382 if (p != (void *)0x90) 1383 return __LINE__; 1384 1385 /* test space handling */ 1386 if (sscanf("a b1", "a b%d", &i) != 1) 1387 return __LINE__; 1388 1389 if (i != 1) 1390 return __LINE__; 1391 1392 /* test literal percent */ 1393 if (sscanf("a%1", "a%%%d", &i) != 1) 1394 return __LINE__; 1395 1396 if (i != 1) 1397 return __LINE__; 1398 1399 /* test stdint.h types */ 1400 if (sscanf("1|2|3|4|5|6", 1401 "%d|%ld|%lld|%u|%lu|%llu", 1402 &i, &l, &ll, &u, &ul, &ull) != 6) 1403 return __LINE__; 1404 1405 if (i != 1 || l != 2 || ll != 3 || 1406 u != 4 || ul != 5 || ull != 6) 1407 return __LINE__; 1408 1409 return 0; 1410 } 1411 1412 static int run_vfprintf(int min, int max) 1413 { 1414 int test; 1415 int ret = 0; 1416 1417 for (test = min; test >= 0 && test <= max; test++) { 1418 int llen = 0; /* line length */ 1419 1420 /* avoid leaving empty lines below, this will insert holes into 1421 * test numbers. 1422 */ 1423 switch (test + __LINE__ + 1) { 1424 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1425 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1426 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1427 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1428 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1429 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1430 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1431 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1432 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1433 CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break; 1434 case __LINE__: 1435 return ret; /* must be last */ 1436 /* note: do not set any defaults so as to permit holes above */ 1437 } 1438 } 1439 return ret; 1440 } 1441 1442 static int smash_stack(void) 1443 { 1444 char buf[100]; 1445 volatile char *ptr = buf; 1446 size_t i; 1447 1448 for (i = 0; i < 200; i++) 1449 ptr[i] = 'P'; 1450 1451 return 1; 1452 } 1453 1454 static int run_protection(int min __attribute__((unused)), 1455 int max __attribute__((unused))) 1456 { 1457 pid_t pid; 1458 int llen = 0, ret; 1459 siginfo_t siginfo = {}; 1460 struct rlimit rlimit = { 0, 0 }; 1461 1462 llen += printf("0 -fstackprotector "); 1463 1464 #if !defined(_NOLIBC_STACKPROTECTOR) 1465 llen += printf("not supported"); 1466 result(llen, SKIPPED); 1467 return 0; 1468 #endif 1469 1470 #if defined(_NOLIBC_STACKPROTECTOR) 1471 if (!__stack_chk_guard) { 1472 llen += printf("__stack_chk_guard not initialized"); 1473 result(llen, FAIL); 1474 return 1; 1475 } 1476 #endif 1477 1478 pid = -1; 1479 pid = fork(); 1480 1481 switch (pid) { 1482 case -1: 1483 llen += printf("fork()"); 1484 result(llen, FAIL); 1485 return 1; 1486 1487 case 0: 1488 close(STDOUT_FILENO); 1489 close(STDERR_FILENO); 1490 1491 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1492 setrlimit(RLIMIT_CORE, &rlimit); 1493 smash_stack(); 1494 return 1; 1495 1496 default: 1497 ret = waitid(P_PID, pid, &siginfo, WEXITED); 1498 1499 if (ret != 0 || siginfo.si_signo != SIGCHLD || 1500 siginfo.si_code != CLD_KILLED || siginfo.si_status != SIGABRT) { 1501 llen += printf("waitid()"); 1502 result(llen, FAIL); 1503 return 1; 1504 } 1505 result(llen, OK); 1506 return 0; 1507 } 1508 } 1509 1510 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1511 int prepare(void) 1512 { 1513 struct stat stat_buf; 1514 1515 /* It's possible that /dev doesn't even exist or was not mounted, so 1516 * we'll try to create it, mount it, or create minimal entries into it. 1517 * We want at least /dev/null and /dev/console. 1518 */ 1519 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1520 if (stat("/dev/console", &stat_buf) != 0 || 1521 stat("/dev/null", &stat_buf) != 0 || 1522 stat("/dev/zero", &stat_buf) != 0) { 1523 /* try devtmpfs first, otherwise fall back to manual creation */ 1524 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1525 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1526 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1527 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1528 } 1529 } 1530 } 1531 1532 /* If no /dev/console was found before calling init, stdio is closed so 1533 * we need to reopen it from /dev/console. If it failed above, it will 1534 * still fail here and we cannot emit a message anyway. 1535 */ 1536 if (close(dup(1)) == -1) { 1537 int fd = open("/dev/console", O_RDWR); 1538 1539 if (fd >= 0) { 1540 if (fd != 0) 1541 dup2(fd, 0); 1542 if (fd != 1) 1543 dup2(fd, 1); 1544 if (fd != 2) 1545 dup2(fd, 2); 1546 if (fd > 2) 1547 close(fd); 1548 puts("\nSuccessfully reopened /dev/console."); 1549 } 1550 } 1551 1552 /* try to mount /proc if not mounted. Silently fail otherwise */ 1553 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1554 if (stat("/proc/self", &stat_buf) != 0) { 1555 /* If not mountable, remove /proc completely to avoid misuse */ 1556 if (mount("none", "/proc", "proc", 0, 0) != 0) 1557 rmdir("/proc"); 1558 } 1559 } 1560 1561 /* some tests rely on a writable /tmp */ 1562 mkdir("/tmp", 0755); 1563 1564 return 0; 1565 } 1566 1567 /* This is the definition of known test names, with their functions */ 1568 static const struct test test_names[] = { 1569 /* add new tests here */ 1570 { .name = "startup", .func = run_startup }, 1571 { .name = "syscall", .func = run_syscall }, 1572 { .name = "stdlib", .func = run_stdlib }, 1573 { .name = "vfprintf", .func = run_vfprintf }, 1574 { .name = "protection", .func = run_protection }, 1575 { 0 } 1576 }; 1577 1578 static int is_setting_valid(char *test) 1579 { 1580 int idx, len, test_len, valid = 0; 1581 char delimiter; 1582 1583 if (!test) 1584 return valid; 1585 1586 test_len = strlen(test); 1587 1588 for (idx = 0; test_names[idx].name; idx++) { 1589 len = strlen(test_names[idx].name); 1590 if (test_len < len) 1591 continue; 1592 1593 if (strncmp(test, test_names[idx].name, len) != 0) 1594 continue; 1595 1596 delimiter = test[len]; 1597 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1598 continue; 1599 1600 valid = 1; 1601 break; 1602 } 1603 1604 return valid; 1605 } 1606 1607 int main(int argc, char **argv, char **envp) 1608 { 1609 int min = 0; 1610 int max = INT_MAX; 1611 int ret = 0; 1612 int err; 1613 int idx; 1614 char *test; 1615 1616 argv0 = argv[0]; 1617 test_argc = argc; 1618 test_argv = argv; 1619 test_envp = envp; 1620 1621 /* when called as init, it's possible that no console was opened, for 1622 * example if no /dev file system was provided. We'll check that fd#1 1623 * was opened, and if not we'll attempt to create and open /dev/console 1624 * and /dev/null that we'll use for later tests. 1625 */ 1626 if (getpid() == 1) 1627 prepare(); 1628 1629 /* the definition of a series of tests comes from either argv[1] or the 1630 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1631 * series of test names and optional ranges: 1632 * syscall:5-15[:.*],stdlib:8-10 1633 */ 1634 test = argv[1]; 1635 if (!is_setting_valid(test)) 1636 test = getenv("NOLIBC_TEST"); 1637 1638 if (is_setting_valid(test)) { 1639 char *comma, *colon, *dash, *value; 1640 1641 do { 1642 comma = strchr(test, ','); 1643 if (comma) 1644 *(comma++) = '\0'; 1645 1646 colon = strchr(test, ':'); 1647 if (colon) 1648 *(colon++) = '\0'; 1649 1650 for (idx = 0; test_names[idx].name; idx++) { 1651 if (strcmp(test, test_names[idx].name) == 0) 1652 break; 1653 } 1654 1655 if (test_names[idx].name) { 1656 /* The test was named, it will be called at least 1657 * once. We may have an optional range at <colon> 1658 * here, which defaults to the full range. 1659 */ 1660 do { 1661 min = 0; max = INT_MAX; 1662 value = colon; 1663 if (value && *value) { 1664 colon = strchr(value, ':'); 1665 if (colon) 1666 *(colon++) = '\0'; 1667 1668 dash = strchr(value, '-'); 1669 if (dash) 1670 *(dash++) = '\0'; 1671 1672 /* support :val: :min-max: :min-: :-max: */ 1673 if (*value) 1674 min = atoi(value); 1675 if (!dash) 1676 max = min; 1677 else if (*dash) 1678 max = atoi(dash); 1679 1680 value = colon; 1681 } 1682 1683 /* now's time to call the test */ 1684 printf("Running test '%s'\n", test_names[idx].name); 1685 err = test_names[idx].func(min, max); 1686 ret += err; 1687 printf("Errors during this test: %d\n\n", err); 1688 } while (colon && *colon); 1689 } else 1690 printf("Ignoring unknown test name '%s'\n", test); 1691 1692 test = comma; 1693 } while (test && *test); 1694 } else { 1695 /* no test mentioned, run everything */ 1696 for (idx = 0; test_names[idx].name; idx++) { 1697 printf("Running test '%s'\n", test_names[idx].name); 1698 err = test_names[idx].func(min, max); 1699 ret += err; 1700 printf("Errors during this test: %d\n\n", err); 1701 } 1702 } 1703 1704 printf("Total number of errors: %d\n", ret); 1705 1706 if (getpid() == 1) { 1707 /* we're running as init, there's no other process on the 1708 * system, thus likely started from a VM for a quick check. 1709 * Exiting will provoke a kernel panic that may be reported 1710 * as an error by Qemu or the hypervisor, while stopping 1711 * cleanly will often be reported as a success. This allows 1712 * to use the output of this program for bisecting kernels. 1713 */ 1714 printf("Leaving init with final status: %d\n", !!ret); 1715 if (ret == 0) 1716 reboot(RB_POWER_OFF); 1717 #if defined(__x86_64__) 1718 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1719 * exit with status code 2N+1 when N is written to 0x501. We 1720 * hard-code the syscall here as it's arch-dependent. 1721 */ 1722 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1723 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1724 /* if it does nothing, fall back to the regular panic */ 1725 #endif 1726 } 1727 1728 printf("Exiting with status %d\n", !!ret); 1729 return !!ret; 1730 } 1731