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 #include <stdio.h> 13 #include <stdlib.h> 14 #include <string.h> 15 #include <sys/auxv.h> 16 #include <sys/ioctl.h> 17 #include <sys/mman.h> 18 #include <sys/mount.h> 19 #include <sys/prctl.h> 20 #include <sys/random.h> 21 #include <sys/reboot.h> 22 #include <sys/resource.h> 23 #include <sys/stat.h> 24 #include <sys/syscall.h> 25 #include <sys/sysmacros.h> 26 #include <sys/time.h> 27 #include <sys/timerfd.h> 28 #include <sys/utsname.h> 29 #include <sys/wait.h> 30 #include <dirent.h> 31 #include <errno.h> 32 #include <fcntl.h> 33 #include <poll.h> 34 #include <sched.h> 35 #include <signal.h> 36 #include <stdarg.h> 37 #include <stddef.h> 38 #include <stdint.h> 39 #include <time.h> 40 #include <unistd.h> 41 #include <limits.h> 42 #include <ctype.h> 43 44 #pragma GCC diagnostic ignored "-Wmissing-prototypes" 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 << 0; 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 |= 1 << 1; 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(is_nolibc, constructor_test_value, 0x3); 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, 0x3); 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 static int test_dirent(void) 771 { 772 int comm = 0, cmdline = 0; 773 struct dirent dirent, *result; 774 DIR *dir; 775 int ret; 776 777 dir = opendir("/proc/self"); 778 if (!dir) 779 return 1; 780 781 while (1) { 782 errno = 0; 783 ret = readdir_r(dir, &dirent, &result); 784 if (ret != 0) 785 return 1; 786 if (!result) 787 break; 788 789 if (strcmp(dirent.d_name, "comm") == 0) 790 comm++; 791 else if (strcmp(dirent.d_name, "cmdline") == 0) 792 cmdline++; 793 } 794 795 if (errno) 796 return 1; 797 798 ret = closedir(dir); 799 if (ret) 800 return 1; 801 802 if (comm != 1 || cmdline != 1) 803 return 1; 804 805 return 0; 806 } 807 808 int test_getrandom(void) 809 { 810 uint64_t rng = 0; 811 ssize_t ret; 812 813 ret = getrandom(&rng, sizeof(rng), GRND_NONBLOCK); 814 if (ret == -1 && errno == EAGAIN) 815 return 0; /* No entropy available yet */ 816 817 if (ret != sizeof(rng)) 818 return ret; 819 820 if (!rng) { 821 errno = EINVAL; 822 return -1; 823 } 824 825 return 0; 826 } 827 828 int test_getpagesize(void) 829 { 830 int x = getpagesize(); 831 int c; 832 833 if (x < 0) 834 return x; 835 836 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 837 /* 838 * x86 family is always 4K page. 839 */ 840 c = (x == 4096); 841 #elif defined(__aarch64__) 842 /* 843 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 844 * which are selected at kernel compilation time. 845 */ 846 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 847 #else 848 /* 849 * Assuming other architectures must have at least 4K page. 850 */ 851 c = (x >= 4096); 852 #endif 853 854 return !c; 855 } 856 857 int test_file_stream(void) 858 { 859 FILE *f; 860 int r; 861 862 f = fopen("/dev/null", "r"); 863 if (!f) 864 return -1; 865 866 errno = 0; 867 r = fwrite("foo", 1, 3, f); 868 if (r != 0 || errno != EBADF) { 869 fclose(f); 870 return -1; 871 } 872 873 r = fclose(f); 874 if (r == EOF) 875 return -1; 876 877 return 0; 878 } 879 880 enum fork_type { 881 FORK_STANDARD, 882 FORK_VFORK, 883 }; 884 885 int test_fork(enum fork_type type) 886 { 887 int status; 888 pid_t pid; 889 890 /* flush the printf buffer to avoid child flush it */ 891 fflush(stdout); 892 fflush(stderr); 893 894 switch (type) { 895 case FORK_STANDARD: 896 pid = fork(); 897 break; 898 case FORK_VFORK: 899 pid = vfork(); 900 break; 901 default: 902 return 1; 903 } 904 905 switch (pid) { 906 case -1: 907 return 1; 908 909 case 0: 910 _exit(123); 911 912 default: 913 pid = waitpid(pid, &status, 0); 914 915 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 916 } 917 } 918 919 int test_stat_timestamps(void) 920 { 921 struct stat st; 922 923 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 924 return 1; 925 926 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 927 return 1; 928 929 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 930 return 1; 931 932 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 933 return 1; 934 935 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 936 return 1; 937 938 return 0; 939 } 940 941 int test_timer(void) 942 { 943 struct itimerspec timerspec; 944 struct sigevent evp; 945 timer_t timer; 946 int ret; 947 948 evp.sigev_notify = SIGEV_NONE; 949 950 ret = timer_create(CLOCK_MONOTONIC, &evp, &timer); 951 if (ret) 952 return ret; 953 954 timerspec = (struct itimerspec) { 955 .it_value.tv_sec = 1000000, 956 }; 957 ret = timer_settime(timer, 0, &timerspec, NULL); 958 if (ret) 959 goto err; 960 961 timerspec = (struct itimerspec) { 962 .it_value.tv_sec = -1, 963 .it_value.tv_nsec = -1, 964 .it_interval.tv_sec = -1, 965 .it_interval.tv_nsec = -1, 966 }; 967 ret = timer_gettime(timer, &timerspec); 968 if (ret) 969 goto err; 970 971 errno = EINVAL; 972 ret = -1; 973 974 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec) 975 goto err; 976 977 if (timerspec.it_value.tv_sec > 1000000) 978 goto err; 979 980 ret = timer_delete(timer); 981 if (ret) 982 return ret; 983 984 return 0; 985 986 err: 987 timer_delete(timer); 988 return ret; 989 } 990 991 int test_timerfd(void) 992 { 993 struct itimerspec timerspec; 994 int timer, ret; 995 996 timer = timerfd_create(CLOCK_MONOTONIC, 0); 997 if (timer == -1) 998 return -1; 999 1000 timerspec = (struct itimerspec) { 1001 .it_value.tv_sec = 1000000, 1002 }; 1003 ret = timerfd_settime(timer, 0, &timerspec, NULL); 1004 if (ret) 1005 goto err; 1006 1007 timerspec = (struct itimerspec) { 1008 .it_value.tv_sec = -1, 1009 .it_value.tv_nsec = -1, 1010 .it_interval.tv_sec = -1, 1011 .it_interval.tv_nsec = -1, 1012 }; 1013 ret = timerfd_gettime(timer, &timerspec); 1014 if (ret) 1015 goto err; 1016 1017 errno = EINVAL; 1018 ret = -1; 1019 1020 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec) 1021 goto err; 1022 1023 if (timerspec.it_value.tv_sec > 1000000) 1024 goto err; 1025 1026 ret = close(timer); 1027 if (ret) 1028 return ret; 1029 1030 return 0; 1031 1032 err: 1033 close(timer); 1034 return ret; 1035 } 1036 1037 int test_uname(void) 1038 { 1039 struct utsname buf; 1040 char osrelease[sizeof(buf.release)]; 1041 ssize_t r; 1042 int fd; 1043 1044 memset(&buf.domainname, 'P', sizeof(buf.domainname)); 1045 1046 if (uname(&buf)) 1047 return 1; 1048 1049 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname))) 1050 return 1; 1051 1052 fd = open("/proc/sys/kernel/osrelease", O_RDONLY); 1053 if (fd == -1) 1054 return 1; 1055 1056 r = read(fd, osrelease, sizeof(osrelease)); 1057 if (r == -1) 1058 return 1; 1059 1060 close(fd); 1061 1062 if (osrelease[r - 1] == '\n') 1063 r--; 1064 1065 /* Validate one of the later fields to ensure field sizes are correct */ 1066 if (strncmp(osrelease, buf.release, r)) 1067 return 1; 1068 1069 /* Ensure the field domainname is set, it is missing from struct old_utsname */ 1070 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname)) 1071 return 1; 1072 1073 return 0; 1074 } 1075 1076 int test_mmap_munmap(void) 1077 { 1078 int ret, fd, i, page_size; 1079 void *mem; 1080 size_t file_size, length, mem_length; 1081 off_t offset, pa_offset; 1082 struct stat stat_buf; 1083 const char * const files[] = { 1084 "/dev/zero", 1085 "/proc/1/exe", "/proc/self/exe", 1086 argv0, 1087 NULL 1088 }; 1089 1090 page_size = getpagesize(); 1091 if (page_size < 0) 1092 return 1; 1093 1094 /* find a right file to mmap, existed and accessible */ 1095 for (i = 0; files[i] != NULL; i++) { 1096 ret = fd = open(files[i], O_RDONLY); 1097 if (ret == -1) 1098 continue; 1099 else 1100 break; 1101 } 1102 if (ret == -1) 1103 return 1; 1104 1105 ret = stat(files[i], &stat_buf); 1106 if (ret == -1) 1107 goto end; 1108 1109 /* file size of the special /dev/zero is 0, let's assign one manually */ 1110 if (i == 0) 1111 file_size = 3*page_size; 1112 else 1113 file_size = stat_buf.st_size; 1114 1115 offset = file_size - 1; 1116 if (offset < 0) 1117 offset = 0; 1118 length = file_size - offset; 1119 pa_offset = offset & ~(page_size - 1); 1120 mem_length = length + offset - pa_offset; 1121 1122 mem = mmap(NULL, mem_length, PROT_READ, MAP_SHARED, fd, pa_offset); 1123 if (mem == MAP_FAILED) { 1124 ret = 1; 1125 goto end; 1126 } 1127 1128 mem = mremap(mem, mem_length, mem_length * 2, MREMAP_MAYMOVE, 0); 1129 if (mem == MAP_FAILED) { 1130 munmap(mem, mem_length); 1131 ret = 1; 1132 goto end; 1133 } 1134 1135 ret = munmap(mem, mem_length * 2); 1136 1137 end: 1138 close(fd); 1139 return !!ret; 1140 } 1141 1142 int test_pipe(void) 1143 { 1144 const char *const msg = "hello, nolibc"; 1145 int pipefd[2]; 1146 char buf[32]; 1147 size_t len; 1148 1149 if (pipe(pipefd) == -1) 1150 return 1; 1151 1152 write(pipefd[1], msg, strlen(msg)); 1153 close(pipefd[1]); 1154 len = read(pipefd[0], buf, sizeof(buf)); 1155 close(pipefd[0]); 1156 1157 if (len != strlen(msg)) 1158 return 1; 1159 1160 return !!memcmp(buf, msg, len); 1161 } 1162 1163 int test_rlimit(void) 1164 { 1165 struct rlimit rlim = { 1166 .rlim_cur = 1 << 20, 1167 .rlim_max = 1 << 21, 1168 }; 1169 int ret; 1170 1171 ret = setrlimit(RLIMIT_CORE, &rlim); 1172 if (ret) 1173 return -1; 1174 1175 rlim.rlim_cur = 0; 1176 rlim.rlim_max = 0; 1177 1178 ret = getrlimit(RLIMIT_CORE, &rlim); 1179 if (ret) 1180 return -1; 1181 1182 if (rlim.rlim_cur != 1 << 20) 1183 return -1; 1184 if (rlim.rlim_max != 1 << 21) 1185 return -1; 1186 1187 return 0; 1188 } 1189 1190 int test_openat(void) 1191 { 1192 int dev, null; 1193 1194 dev = openat(AT_FDCWD, "/dev", O_DIRECTORY); 1195 if (dev < 0) 1196 return -1; 1197 1198 null = openat(dev, "null", O_RDONLY); 1199 close(dev); 1200 if (null < 0) 1201 return -1; 1202 1203 close(null); 1204 return 0; 1205 } 1206 1207 int test_namespace(void) 1208 { 1209 int original_ns, new_ns, ret; 1210 ino_t original_ns_ino; 1211 struct stat stat_buf; 1212 1213 original_ns = open("/proc/self/ns/uts", O_RDONLY); 1214 if (original_ns == -1) 1215 return -1; 1216 1217 ret = fstat(original_ns, &stat_buf); 1218 if (ret) 1219 goto out; 1220 1221 original_ns_ino = stat_buf.st_ino; 1222 1223 ret = unshare(CLONE_NEWUTS); 1224 if (ret) 1225 goto out; 1226 1227 new_ns = open("/proc/self/ns/uts", O_RDONLY); 1228 if (new_ns == -1) { 1229 ret = new_ns; 1230 goto out; 1231 } 1232 1233 ret = fstat(new_ns, &stat_buf); 1234 close(new_ns); 1235 if (ret) 1236 goto out; 1237 1238 if (stat_buf.st_ino == original_ns_ino) { 1239 errno = EINVAL; 1240 ret = -1; 1241 goto out; 1242 } 1243 1244 ret = setns(original_ns, CLONE_NEWUTS); 1245 if (ret) 1246 goto out; 1247 1248 new_ns = open("/proc/self/ns/uts", O_RDONLY); 1249 if (new_ns == -1) { 1250 ret = new_ns; 1251 goto out; 1252 } 1253 1254 ret = fstat(new_ns, &stat_buf); 1255 if (ret) 1256 goto out; 1257 1258 close(new_ns); 1259 1260 if (stat_buf.st_ino != original_ns_ino) { 1261 errno = EINVAL; 1262 ret = -1; 1263 goto out; 1264 } 1265 1266 ret = 0; 1267 1268 out: 1269 close(original_ns); 1270 return ret; 1271 } 1272 1273 /* Run syscall tests between IDs <min> and <max>. 1274 * Return 0 on success, non-zero on failure. 1275 */ 1276 int run_syscall(int min, int max) 1277 { 1278 struct timeval tv; 1279 struct timezone tz; 1280 struct timespec ts; 1281 struct stat stat_buf; 1282 int euid0; 1283 int proc; 1284 int test; 1285 int tmp; 1286 int ret = 0; 1287 void *p1, *p2; 1288 int has_gettid = 1; 1289 int has_brk; 1290 1291 /* <proc> indicates whether or not /proc is mounted */ 1292 proc = stat("/proc", &stat_buf) == 0; 1293 1294 /* this will be used to skip certain tests that can't be run unprivileged */ 1295 euid0 = geteuid() == 0; 1296 1297 /* from 2.30, glibc provides gettid() */ 1298 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 1299 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 1300 #endif 1301 1302 /* on musl setting brk()/sbrk() always fails */ 1303 has_brk = brk(0) == 0; 1304 1305 for (test = min; test >= 0 && test <= max; test++) { 1306 int llen = 0; /* line length */ 1307 1308 /* avoid leaving empty lines below, this will insert holes into 1309 * test numbers. 1310 */ 1311 switch (test + __LINE__ + 1) { 1312 CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break; 1313 CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break; 1314 CASE_TEST(clock_getres); EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break; 1315 CASE_TEST(clock_gettime); EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break; 1316 CASE_TEST(clock_settime); EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break; 1317 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 1318 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 1319 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 1320 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 1321 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 1322 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1323 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1324 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 1325 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break; 1326 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break; 1327 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break; 1328 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 1329 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 1330 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 1331 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 1332 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 1333 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 1334 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 1335 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 1336 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 1337 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 1338 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 1339 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1340 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1341 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1342 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1343 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1344 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1345 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 1346 CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break; 1347 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break; 1348 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 1349 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 1350 CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break; 1351 CASE_TEST(getrandom); EXPECT_SYSZR(1, test_getrandom()); break; 1352 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 1353 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 1354 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 1355 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 1356 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 1357 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 1358 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 1359 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 1360 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 1361 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 1362 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 1363 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 1364 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 1365 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 1366 CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break; 1367 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break; 1368 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break; 1369 CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break; 1370 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 1371 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 1372 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 1373 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 1374 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 1375 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 1376 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break; 1377 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 1378 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 1379 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 1380 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; 1381 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 1382 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 1383 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 1384 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 1385 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 1386 CASE_TEST(timer); EXPECT_SYSZR(1, test_timer()); break; 1387 CASE_TEST(timerfd); EXPECT_SYSZR(1, test_timerfd()); break; 1388 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break; 1389 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break; 1390 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 1391 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 1392 CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break; 1393 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 1394 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 1395 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 1396 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 1397 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 1398 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 1399 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 1400 CASE_TEST(namespace); EXPECT_SYSZR(euid0 && proc, test_namespace()); break; 1401 case __LINE__: 1402 return ret; /* must be last */ 1403 /* note: do not set any defaults so as to permit holes above */ 1404 } 1405 } 1406 return ret; 1407 } 1408 1409 int test_difftime(void) 1410 { 1411 if (difftime(200., 100.) != 100.) 1412 return 1; 1413 1414 if (difftime(100., 200.) != -100.) 1415 return 1; 1416 1417 return 0; 1418 } 1419 1420 int run_stdlib(int min, int max) 1421 { 1422 int test; 1423 int ret = 0; 1424 1425 for (test = min; test >= 0 && test <= max; test++) { 1426 int llen = 0; /* line length */ 1427 1428 /* For functions that take a long buffer, like strlcat() 1429 * Add some more chars after the \0, to test functions that overwrite the buffer set 1430 * the \0 at the exact right position. 1431 */ 1432 char buf[11] = "test123456"; 1433 buf[4] = '\0'; 1434 1435 1436 /* avoid leaving empty lines below, this will insert holes into 1437 * test numbers. 1438 */ 1439 switch (test + __LINE__ + 1) { 1440 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 1441 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 1442 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 1443 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 1444 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 1445 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 1446 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 1447 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 1448 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 1449 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 1450 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 1451 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 1452 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break; 1453 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break; 1454 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break; 1455 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break; 1456 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break; 1457 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break; 1458 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break; 1459 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break; 1460 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break; 1461 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break; 1462 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break; 1463 CASE_TEST(strstr_foobar_foo); EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break; 1464 CASE_TEST(strstr_foobar_bar); EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break; 1465 CASE_TEST(strstr_foobar_baz); EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break; 1466 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 1467 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 1468 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 1469 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 1470 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 1471 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 1472 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 1473 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 1474 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 1475 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 1476 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 1477 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 1478 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 1479 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 1480 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 1481 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 1482 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 1483 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 1484 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 1485 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 1486 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 1487 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 1488 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1489 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1490 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1491 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1492 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1493 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1494 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1495 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1496 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1497 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1498 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1499 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1500 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1501 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1502 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1503 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1504 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1505 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1506 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1507 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1508 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1509 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1510 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1511 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1512 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1513 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1514 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1515 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1516 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break; 1517 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break; 1518 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break; 1519 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break; 1520 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break; 1521 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break; 1522 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break; 1523 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break; 1524 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break; 1525 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break; 1526 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break; 1527 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break; 1528 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break; 1529 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break; 1530 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break; 1531 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break; 1532 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break; 1533 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break; 1534 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break; 1535 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break; 1536 CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break; 1537 CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break; 1538 CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break; 1539 CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break; 1540 CASE_TEST(abs); EXPECT_EQ(1, abs(-10), 10); break; 1541 CASE_TEST(abs_noop); EXPECT_EQ(1, abs(10), 10); break; 1542 CASE_TEST(difftime); EXPECT_ZR(1, test_difftime()); break; 1543 1544 case __LINE__: 1545 return ret; /* must be last */ 1546 /* note: do not set any defaults so as to permit holes above */ 1547 } 1548 } 1549 return ret; 1550 } 1551 1552 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1553 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1554 1555 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1556 { 1557 char buf[100]; 1558 va_list args; 1559 ssize_t w; 1560 int ret; 1561 1562 1563 va_start(args, fmt); 1564 /* Only allow writing 21 bytes, to test truncation */ 1565 w = vsnprintf(buf, 21, fmt, args); 1566 va_end(args); 1567 1568 if (w != c) { 1569 llen += printf(" written(%d) != %d", (int)w, c); 1570 result(llen, FAIL); 1571 return 1; 1572 } 1573 1574 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1575 ret = strncmp(expected, buf, c); 1576 1577 result(llen, ret ? FAIL : OK); 1578 return ret; 1579 } 1580 1581 static int test_scanf(void) 1582 { 1583 unsigned long long ull; 1584 unsigned long ul; 1585 unsigned int u; 1586 long long ll; 1587 long l; 1588 void *p; 1589 int i; 1590 1591 /* return __LINE__ to point to the specific failure */ 1592 1593 /* test EOF */ 1594 if (sscanf("", "foo") != EOF) 1595 return __LINE__; 1596 1597 /* test simple literal without placeholder */ 1598 if (sscanf("foo", "foo") != 0) 1599 return __LINE__; 1600 1601 /* test single placeholder */ 1602 if (sscanf("123", "%d", &i) != 1) 1603 return __LINE__; 1604 1605 if (i != 123) 1606 return __LINE__; 1607 1608 /* test multiple place holders and separators */ 1609 if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3) 1610 return __LINE__; 1611 1612 if (i != 123) 1613 return __LINE__; 1614 1615 if (u != 456) 1616 return __LINE__; 1617 1618 if (p != (void *)0x90) 1619 return __LINE__; 1620 1621 /* test space handling */ 1622 if (sscanf("a b1", "a b%d", &i) != 1) 1623 return __LINE__; 1624 1625 if (i != 1) 1626 return __LINE__; 1627 1628 /* test literal percent */ 1629 if (sscanf("a%1", "a%%%d", &i) != 1) 1630 return __LINE__; 1631 1632 if (i != 1) 1633 return __LINE__; 1634 1635 /* test stdint.h types */ 1636 if (sscanf("1|2|3|4|5|6", 1637 "%d|%ld|%lld|%u|%lu|%llu", 1638 &i, &l, &ll, &u, &ul, &ull) != 6) 1639 return __LINE__; 1640 1641 if (i != 1 || l != 2 || ll != 3 || 1642 u != 4 || ul != 5 || ull != 6) 1643 return __LINE__; 1644 1645 return 0; 1646 } 1647 1648 int test_strerror(void) 1649 { 1650 char buf[100]; 1651 ssize_t ret; 1652 1653 memset(buf, 'A', sizeof(buf)); 1654 1655 errno = EINVAL; 1656 ret = snprintf(buf, sizeof(buf), "%m"); 1657 if (is_nolibc) { 1658 if (ret < 6 || memcmp(buf, "errno=", 6)) 1659 return 1; 1660 } 1661 1662 return 0; 1663 } 1664 1665 static int test_printf_error(void) 1666 { 1667 int fd, ret, saved_errno; 1668 1669 fd = open("/dev/full", O_RDWR); 1670 if (fd == -1) 1671 return 1; 1672 1673 errno = 0; 1674 ret = dprintf(fd, "foo"); 1675 saved_errno = errno; 1676 close(fd); 1677 1678 if (ret != -1) 1679 return 2; 1680 1681 if (saved_errno != ENOSPC) 1682 return 3; 1683 1684 return 0; 1685 } 1686 1687 static int run_printf(int min, int max) 1688 { 1689 int test; 1690 int ret = 0; 1691 1692 for (test = min; test >= 0 && test <= max; test++) { 1693 int llen = 0; /* line length */ 1694 1695 /* avoid leaving empty lines below, this will insert holes into 1696 * test numbers. 1697 */ 1698 switch (test + __LINE__ + 1) { 1699 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1700 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1701 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1702 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1703 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1704 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1705 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1706 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1707 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1708 CASE_TEST(uintmax_t); EXPECT_VFPRINTF(20, "18446744073709551615", "%ju", 0xffffffffffffffffULL); break; 1709 CASE_TEST(intmax_t); EXPECT_VFPRINTF(20, "-9223372036854775807", "%jd", 0x8000000000000001LL); break; 1710 CASE_TEST(truncation); EXPECT_VFPRINTF(25, "01234567890123456789", "%s", "0123456789012345678901234"); break; 1711 CASE_TEST(string_width); EXPECT_VFPRINTF(10, " 1", "%10s", "1"); break; 1712 CASE_TEST(number_width); EXPECT_VFPRINTF(10, " 1", "%10d", 1); break; 1713 CASE_TEST(width_trunc); EXPECT_VFPRINTF(25, " ", "%25d", 1); break; 1714 CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break; 1715 CASE_TEST(strerror); EXPECT_ZR(1, test_strerror()); break; 1716 CASE_TEST(printf_error); EXPECT_ZR(1, test_printf_error()); break; 1717 case __LINE__: 1718 return ret; /* must be last */ 1719 /* note: do not set any defaults so as to permit holes above */ 1720 } 1721 } 1722 return ret; 1723 } 1724 1725 __attribute__((no_sanitize("undefined"))) 1726 static int smash_stack(void) 1727 { 1728 char buf[100]; 1729 volatile char *ptr = buf; 1730 size_t i; 1731 1732 for (i = 0; i < 200; i++) 1733 ptr[i] = 'P'; 1734 1735 return 1; 1736 } 1737 1738 static int run_protection(int min __attribute__((unused)), 1739 int max __attribute__((unused))) 1740 { 1741 pid_t pid; 1742 int llen = 0, status; 1743 struct rlimit rlimit = { 0, 0 }; 1744 1745 llen += printf("0 -fstackprotector "); 1746 1747 #if !defined(_NOLIBC_STACKPROTECTOR) 1748 llen += printf("not supported"); 1749 result(llen, SKIPPED); 1750 return 0; 1751 #endif 1752 1753 #if defined(_NOLIBC_STACKPROTECTOR) 1754 if (!__stack_chk_guard) { 1755 llen += printf("__stack_chk_guard not initialized"); 1756 result(llen, FAIL); 1757 return 1; 1758 } 1759 #endif 1760 1761 pid = -1; 1762 pid = fork(); 1763 1764 switch (pid) { 1765 case -1: 1766 llen += printf("fork()"); 1767 result(llen, FAIL); 1768 return 1; 1769 1770 case 0: 1771 close(STDOUT_FILENO); 1772 close(STDERR_FILENO); 1773 1774 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1775 setrlimit(RLIMIT_CORE, &rlimit); 1776 smash_stack(); 1777 return 1; 1778 1779 default: 1780 pid = waitpid(pid, &status, 0); 1781 1782 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1783 llen += printf("waitpid()"); 1784 result(llen, FAIL); 1785 return 1; 1786 } 1787 result(llen, OK); 1788 return 0; 1789 } 1790 } 1791 1792 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1793 int prepare(void) 1794 { 1795 struct stat stat_buf; 1796 1797 /* It's possible that /dev doesn't even exist or was not mounted, so 1798 * we'll try to create it, mount it, or create minimal entries into it. 1799 * We want at least /dev/null and /dev/console. 1800 */ 1801 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1802 if (stat("/dev/console", &stat_buf) != 0 || 1803 stat("/dev/null", &stat_buf) != 0 || 1804 stat("/dev/zero", &stat_buf) != 0 || 1805 stat("/dev/full", &stat_buf) != 0) { 1806 /* try devtmpfs first, otherwise fall back to manual creation */ 1807 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1808 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1809 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1810 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1811 mknod("/dev/full", 0666 | S_IFCHR, makedev(1, 7)); 1812 } 1813 } 1814 } 1815 1816 /* If no /dev/console was found before calling init, stdio is closed so 1817 * we need to reopen it from /dev/console. If it failed above, it will 1818 * still fail here and we cannot emit a message anyway. 1819 */ 1820 if (close(dup(1)) == -1) { 1821 int fd = open("/dev/console", O_RDWR); 1822 1823 if (fd >= 0) { 1824 if (fd != 0) 1825 dup2(fd, 0); 1826 if (fd != 1) 1827 dup2(fd, 1); 1828 if (fd != 2) 1829 dup2(fd, 2); 1830 if (fd > 2) 1831 close(fd); 1832 puts("\nSuccessfully reopened /dev/console."); 1833 } 1834 } 1835 1836 /* try to mount /proc if not mounted. Silently fail otherwise */ 1837 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1838 if (stat("/proc/self", &stat_buf) != 0) { 1839 /* If not mountable, remove /proc completely to avoid misuse */ 1840 if (mount("none", "/proc", "proc", 0, 0) != 0) 1841 rmdir("/proc"); 1842 } 1843 } 1844 1845 /* some tests rely on a writable /tmp */ 1846 mkdir("/tmp", 0755); 1847 1848 return 0; 1849 } 1850 1851 /* This is the definition of known test names, with their functions */ 1852 static const struct test test_names[] = { 1853 /* add new tests here */ 1854 { .name = "startup", .func = run_startup }, 1855 { .name = "syscall", .func = run_syscall }, 1856 { .name = "stdlib", .func = run_stdlib }, 1857 { .name = "printf", .func = run_printf }, 1858 { .name = "protection", .func = run_protection }, 1859 { 0 } 1860 }; 1861 1862 static int is_setting_valid(char *test) 1863 { 1864 int idx, len, test_len, valid = 0; 1865 char delimiter; 1866 1867 if (!test) 1868 return valid; 1869 1870 test_len = strlen(test); 1871 1872 for (idx = 0; test_names[idx].name; idx++) { 1873 len = strlen(test_names[idx].name); 1874 if (test_len < len) 1875 continue; 1876 1877 if (strncmp(test, test_names[idx].name, len) != 0) 1878 continue; 1879 1880 delimiter = test[len]; 1881 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1882 continue; 1883 1884 valid = 1; 1885 break; 1886 } 1887 1888 return valid; 1889 } 1890 1891 int main(int argc, char **argv, char **envp) 1892 { 1893 int min = 0; 1894 int max = INT_MAX; 1895 int ret = 0; 1896 int err; 1897 int idx; 1898 char *test; 1899 1900 argv0 = argv[0]; 1901 test_argc = argc; 1902 test_argv = argv; 1903 test_envp = envp; 1904 1905 /* when called as init, it's possible that no console was opened, for 1906 * example if no /dev file system was provided. We'll check that fd#1 1907 * was opened, and if not we'll attempt to create and open /dev/console 1908 * and /dev/null that we'll use for later tests. 1909 */ 1910 if (getpid() == 1) 1911 prepare(); 1912 1913 /* the definition of a series of tests comes from either argv[1] or the 1914 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1915 * series of test names and optional ranges: 1916 * syscall:5-15[:.*],stdlib:8-10 1917 */ 1918 test = argv[1]; 1919 if (!is_setting_valid(test)) 1920 test = getenv("NOLIBC_TEST"); 1921 1922 if (is_setting_valid(test)) { 1923 char *comma, *colon, *dash, *value; 1924 1925 do { 1926 comma = strchr(test, ','); 1927 if (comma) 1928 *(comma++) = '\0'; 1929 1930 colon = strchr(test, ':'); 1931 if (colon) 1932 *(colon++) = '\0'; 1933 1934 for (idx = 0; test_names[idx].name; idx++) { 1935 if (strcmp(test, test_names[idx].name) == 0) 1936 break; 1937 } 1938 1939 if (test_names[idx].name) { 1940 /* The test was named, it will be called at least 1941 * once. We may have an optional range at <colon> 1942 * here, which defaults to the full range. 1943 */ 1944 do { 1945 min = 0; max = INT_MAX; 1946 value = colon; 1947 if (value && *value) { 1948 colon = strchr(value, ':'); 1949 if (colon) 1950 *(colon++) = '\0'; 1951 1952 dash = strchr(value, '-'); 1953 if (dash) 1954 *(dash++) = '\0'; 1955 1956 /* support :val: :min-max: :min-: :-max: */ 1957 if (*value) 1958 min = atoi(value); 1959 if (!dash) 1960 max = min; 1961 else if (*dash) 1962 max = atoi(dash); 1963 1964 value = colon; 1965 } 1966 1967 /* now's time to call the test */ 1968 printf("Running test '%s'\n", test_names[idx].name); 1969 err = test_names[idx].func(min, max); 1970 ret += err; 1971 printf("Errors during this test: %d\n\n", err); 1972 } while (colon && *colon); 1973 } else 1974 printf("Ignoring unknown test name '%s'\n", test); 1975 1976 test = comma; 1977 } while (test && *test); 1978 } else { 1979 /* no test mentioned, run everything */ 1980 for (idx = 0; test_names[idx].name; idx++) { 1981 printf("Running test '%s'\n", test_names[idx].name); 1982 err = test_names[idx].func(min, max); 1983 ret += err; 1984 printf("Errors during this test: %d\n\n", err); 1985 } 1986 } 1987 1988 printf("Total number of errors: %d\n", ret); 1989 1990 if (getpid() == 1) { 1991 /* we're running as init, there's no other process on the 1992 * system, thus likely started from a VM for a quick check. 1993 * Exiting will provoke a kernel panic that may be reported 1994 * as an error by Qemu or the hypervisor, while stopping 1995 * cleanly will often be reported as a success. This allows 1996 * to use the output of this program for bisecting kernels. 1997 */ 1998 printf("Leaving init with final status: %d\n", !!ret); 1999 if (ret == 0) 2000 reboot(RB_POWER_OFF); 2001 #if defined(__x86_64__) 2002 /* QEMU started with "-device isa-debug-exit -no-reboot" will 2003 * exit with status code 2N+1 when N is written to 0x501. We 2004 * hard-code the syscall here as it's arch-dependent. 2005 */ 2006 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 2007 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 2008 /* if it does nothing, fall back to the regular panic */ 2009 #endif 2010 } 2011 2012 printf("Exiting with status %d\n", !!ret); 2013 return !!ret; 2014 } 2015