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