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