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/ptrace.h> 21 #include <sys/random.h> 22 #include <sys/reboot.h> 23 #include <sys/resource.h> 24 #include <sys/stat.h> 25 #include <sys/syscall.h> 26 #include <sys/sysmacros.h> 27 #include <sys/time.h> 28 #include <sys/timerfd.h> 29 #include <sys/uio.h> 30 #include <sys/utsname.h> 31 #include <sys/wait.h> 32 #include <dirent.h> 33 #include <errno.h> 34 #include <fcntl.h> 35 #include <poll.h> 36 #include <sched.h> 37 #include <signal.h> 38 #include <stdarg.h> 39 #include <stddef.h> 40 #include <stdint.h> 41 #include <time.h> 42 #include <unistd.h> 43 #include <limits.h> 44 #include <ctype.h> 45 46 #pragma GCC diagnostic ignored "-Wmissing-prototypes" 47 48 #include "nolibc-test-linkage.h" 49 50 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 51 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 52 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 53 54 /* will be used to test initialization of environ */ 55 static char **test_envp; 56 57 /* will be used to test initialization of argv */ 58 static char **test_argv; 59 60 /* will be used to test initialization of argc */ 61 static int test_argc; 62 63 /* will be used by some test cases as readable file, please don't write it */ 64 static const char *argv0; 65 66 /* will be used by constructor tests */ 67 static int constructor_test_value; 68 69 static const int is_nolibc = 70 #ifdef NOLIBC 71 1 72 #else 73 0 74 #endif 75 ; 76 77 /* definition of a series of tests */ 78 struct test { 79 const char *name; /* test name */ 80 int (*func)(int min, int max); /* handler */ 81 }; 82 83 #ifndef _NOLIBC_STDLIB_H 84 char *itoa(int i) 85 { 86 static char buf[12]; 87 int ret; 88 89 ret = snprintf(buf, sizeof(buf), "%d", i); 90 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 91 } 92 #endif 93 94 #define CASE_ERR(err) \ 95 case err: return #err 96 97 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 98 * or the decimal value for less common ones. 99 */ 100 static const char *errorname(int err) 101 { 102 switch (err) { 103 case 0: return "SUCCESS"; 104 CASE_ERR(EPERM); 105 CASE_ERR(ENOENT); 106 CASE_ERR(ESRCH); 107 CASE_ERR(EINTR); 108 CASE_ERR(EIO); 109 CASE_ERR(ENXIO); 110 CASE_ERR(E2BIG); 111 CASE_ERR(ENOEXEC); 112 CASE_ERR(EBADF); 113 CASE_ERR(ECHILD); 114 CASE_ERR(EAGAIN); 115 CASE_ERR(ENOMEM); 116 CASE_ERR(EACCES); 117 CASE_ERR(EFAULT); 118 CASE_ERR(ENOTBLK); 119 CASE_ERR(EBUSY); 120 CASE_ERR(EEXIST); 121 CASE_ERR(EXDEV); 122 CASE_ERR(ENODEV); 123 CASE_ERR(ENOTDIR); 124 CASE_ERR(EISDIR); 125 CASE_ERR(EINVAL); 126 CASE_ERR(ENFILE); 127 CASE_ERR(EMFILE); 128 CASE_ERR(ENOTTY); 129 CASE_ERR(ETXTBSY); 130 CASE_ERR(EFBIG); 131 CASE_ERR(ENOSPC); 132 CASE_ERR(ESPIPE); 133 CASE_ERR(EROFS); 134 CASE_ERR(EMLINK); 135 CASE_ERR(EPIPE); 136 CASE_ERR(EDOM); 137 CASE_ERR(ERANGE); 138 CASE_ERR(ENOSYS); 139 CASE_ERR(EOVERFLOW); 140 default: 141 return itoa(err); 142 } 143 } 144 145 static void align_result(size_t llen) 146 { 147 const size_t align = 64; 148 char buf[align]; 149 size_t n; 150 151 if (llen >= align) 152 return; 153 154 n = align - llen; 155 memset(buf, ' ', n); 156 buf[n] = '\0'; 157 fputs(buf, stdout); 158 } 159 160 enum RESULT { 161 OK, 162 FAIL, 163 SKIPPED, 164 }; 165 166 static void result(int llen, enum RESULT r) 167 { 168 const char *msg; 169 170 if (r == OK) 171 msg = " [OK]"; 172 else if (r == SKIPPED) 173 msg = "[SKIPPED]"; 174 else 175 msg = " [FAIL]"; 176 177 align_result(llen); 178 puts(msg); 179 } 180 181 /* The tests below are intended to be used by the macroes, which evaluate 182 * expression <expr>, print the status to stdout, and update the "ret" 183 * variable to count failures. The functions themselves return the number 184 * of failures, thus either 0 or 1. 185 */ 186 187 #define EXPECT_ZR(cond, expr) \ 188 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 189 190 static __attribute__((unused)) 191 int expect_zr(int expr, int llen) 192 { 193 int ret = !(expr == 0); 194 195 llen += printf(" = %d ", expr); 196 result(llen, ret ? FAIL : OK); 197 return ret; 198 } 199 200 201 #define EXPECT_NZ(cond, expr) \ 202 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen); } while (0) 203 204 static __attribute__((unused)) 205 int expect_nz(int expr, int llen) 206 { 207 int ret = !(expr != 0); 208 209 llen += printf(" = %d ", expr); 210 result(llen, ret ? FAIL : OK); 211 return ret; 212 } 213 214 215 #define EXPECT_EQ(cond, expr, val) \ 216 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 217 218 static __attribute__((unused)) 219 int expect_eq(uint64_t expr, int llen, uint64_t val) 220 { 221 int ret = !(expr == val); 222 223 llen += printf(" = %lld ", (long long)expr); 224 result(llen, ret ? FAIL : OK); 225 return ret; 226 } 227 228 229 #define EXPECT_NE(cond, expr, val) \ 230 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 231 232 static __attribute__((unused)) 233 int expect_ne(int expr, int llen, int val) 234 { 235 int ret = !(expr != val); 236 237 llen += printf(" = %d ", expr); 238 result(llen, ret ? FAIL : OK); 239 return ret; 240 } 241 242 243 #define EXPECT_GE(cond, expr, val) \ 244 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 245 246 static __attribute__((unused)) 247 int expect_ge(int expr, int llen, int val) 248 { 249 int ret = !(expr >= val); 250 251 llen += printf(" = %d ", expr); 252 result(llen, ret ? FAIL : OK); 253 return ret; 254 } 255 256 257 #define EXPECT_GT(cond, expr, val) \ 258 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 259 260 static __attribute__((unused)) 261 int expect_gt(int expr, int llen, int val) 262 { 263 int ret = !(expr > val); 264 265 llen += printf(" = %d ", expr); 266 result(llen, ret ? FAIL : OK); 267 return ret; 268 } 269 270 271 #define EXPECT_LE(cond, expr, val) \ 272 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 273 274 static __attribute__((unused)) 275 int expect_le(int expr, int llen, int val) 276 { 277 int ret = !(expr <= val); 278 279 llen += printf(" = %d ", expr); 280 result(llen, ret ? FAIL : OK); 281 return ret; 282 } 283 284 285 #define EXPECT_LT(cond, expr, val) \ 286 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 287 288 static __attribute__((unused)) 289 int expect_lt(int expr, int llen, int val) 290 { 291 int ret = !(expr < val); 292 293 llen += printf(" = %d ", expr); 294 result(llen, ret ? FAIL : OK); 295 return ret; 296 } 297 298 299 #define EXPECT_SYSZR(cond, expr) \ 300 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 301 302 static __attribute__((unused)) 303 int expect_syszr(int expr, int llen) 304 { 305 int ret = 0; 306 307 if (errno == ENOSYS) { 308 llen += printf(" = ENOSYS"); 309 result(llen, SKIPPED); 310 } else if (expr) { 311 ret = 1; 312 llen += printf(" = %d %s ", expr, errorname(errno)); 313 result(llen, FAIL); 314 } else { 315 llen += printf(" = %d ", expr); 316 result(llen, OK); 317 } 318 return ret; 319 } 320 321 322 #define EXPECT_SYSEQ(cond, expr, val) \ 323 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 324 325 static __attribute__((unused)) 326 int expect_syseq(int expr, int llen, int val) 327 { 328 int ret = 0; 329 330 if (expr != val) { 331 ret = 1; 332 llen += printf(" = %d %s ", expr, errorname(errno)); 333 result(llen, FAIL); 334 } else { 335 llen += printf(" = %d ", expr); 336 result(llen, OK); 337 } 338 return ret; 339 } 340 341 342 #define EXPECT_SYSNE(cond, expr, val) \ 343 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 344 345 static __attribute__((unused)) 346 int expect_sysne(int expr, int llen, int val) 347 { 348 int ret = 0; 349 350 if (errno == ENOSYS) { 351 llen += printf(" = ENOSYS"); 352 result(llen, SKIPPED); 353 } else if (expr == val) { 354 ret = 1; 355 llen += printf(" = %d %s ", expr, errorname(errno)); 356 result(llen, FAIL); 357 } else { 358 llen += printf(" = %d ", expr); 359 result(llen, OK); 360 } 361 return ret; 362 } 363 364 365 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 366 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 367 368 #define EXPECT_SYSER(cond, expr, expret, experr) \ 369 EXPECT_SYSER2(cond, expr, expret, experr, 0) 370 371 static __attribute__((unused)) 372 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 373 { 374 int ret = 0; 375 int _errno = errno; 376 377 llen += printf(" = %d %s ", expr, errorname(_errno)); 378 if (errno == ENOSYS) { 379 result(llen, SKIPPED); 380 } else if (expr != expret || (_errno != experr1 && _errno != experr2)) { 381 ret = 1; 382 if (experr2 == 0) 383 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 384 else 385 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 386 result(llen, FAIL); 387 } else { 388 result(llen, OK); 389 } 390 return ret; 391 } 392 393 394 #define EXPECT_PTRZR(cond, expr) \ 395 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 396 397 static __attribute__((unused)) 398 int expect_ptrzr(const void *expr, int llen) 399 { 400 int ret = 0; 401 402 llen += printf(" = <%p> ", expr); 403 if (expr) { 404 ret = 1; 405 result(llen, FAIL); 406 } else { 407 result(llen, OK); 408 } 409 return ret; 410 } 411 412 413 #define EXPECT_PTRNZ(cond, expr) \ 414 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 415 416 static __attribute__((unused)) 417 int expect_ptrnz(const void *expr, int llen) 418 { 419 int ret = 0; 420 421 llen += printf(" = <%p> ", expr); 422 if (!expr) { 423 ret = 1; 424 result(llen, FAIL); 425 } else { 426 result(llen, OK); 427 } 428 return ret; 429 } 430 431 #define EXPECT_PTREQ(cond, expr, cmp) \ 432 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 433 434 static __attribute__((unused)) 435 int expect_ptreq(const void *expr, int llen, const void *cmp) 436 { 437 int ret = 0; 438 439 llen += printf(" = <%p> ", expr); 440 if (expr != cmp) { 441 ret = 1; 442 result(llen, FAIL); 443 } else { 444 result(llen, OK); 445 } 446 return ret; 447 } 448 449 #define EXPECT_PTRNE(cond, expr, cmp) \ 450 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 451 452 static __attribute__((unused)) 453 int expect_ptrne(const void *expr, int llen, const void *cmp) 454 { 455 int ret = 0; 456 457 llen += printf(" = <%p> ", expr); 458 if (expr == cmp) { 459 ret = 1; 460 result(llen, FAIL); 461 } else { 462 result(llen, OK); 463 } 464 return ret; 465 } 466 467 #define EXPECT_PTRGE(cond, expr, cmp) \ 468 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 469 470 static __attribute__((unused)) 471 int expect_ptrge(const void *expr, int llen, const void *cmp) 472 { 473 int ret = !(expr >= cmp); 474 475 llen += printf(" = <%p> ", expr); 476 result(llen, ret ? FAIL : OK); 477 return ret; 478 } 479 480 #define EXPECT_PTRGT(cond, expr, cmp) \ 481 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 482 483 static __attribute__((unused)) 484 int expect_ptrgt(const void *expr, int llen, const void *cmp) 485 { 486 int ret = !(expr > cmp); 487 488 llen += printf(" = <%p> ", expr); 489 result(llen, ret ? FAIL : OK); 490 return ret; 491 } 492 493 494 #define EXPECT_PTRLE(cond, expr, cmp) \ 495 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 496 497 static __attribute__((unused)) 498 int expect_ptrle(const void *expr, int llen, const void *cmp) 499 { 500 int ret = !(expr <= cmp); 501 502 llen += printf(" = <%p> ", expr); 503 result(llen, ret ? FAIL : OK); 504 return ret; 505 } 506 507 508 #define EXPECT_PTRLT(cond, expr, cmp) \ 509 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 510 511 static __attribute__((unused)) 512 int expect_ptrlt(const void *expr, int llen, const void *cmp) 513 { 514 int ret = !(expr < cmp); 515 516 llen += printf(" = <%p> ", expr); 517 result(llen, ret ? FAIL : OK); 518 return ret; 519 } 520 521 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 522 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 523 524 #define EXPECT_PTRER(cond, expr, expret, experr) \ 525 EXPECT_PTRER2(cond, expr, expret, experr, 0) 526 527 static __attribute__((unused)) 528 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 529 { 530 int ret = 0; 531 int _errno = errno; 532 533 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 534 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 535 ret = 1; 536 if (experr2 == 0) 537 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 538 else 539 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 540 result(llen, FAIL); 541 } else { 542 result(llen, OK); 543 } 544 return ret; 545 } 546 547 #define EXPECT_STRZR(cond, expr) \ 548 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 549 550 static __attribute__((unused)) 551 int expect_strzr(const char *expr, int llen) 552 { 553 int ret = 0; 554 555 llen += printf(" = <%s> ", expr ? expr : "(null)"); 556 if (expr) { 557 ret = 1; 558 result(llen, FAIL); 559 } else { 560 result(llen, OK); 561 } 562 return ret; 563 } 564 565 566 #define EXPECT_STRNZ(cond, expr) \ 567 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 568 569 static __attribute__((unused)) 570 int expect_strnz(const char *expr, int llen) 571 { 572 int ret = 0; 573 574 llen += printf(" = <%s> ", expr ? expr : "(null)"); 575 if (!expr) { 576 ret = 1; 577 result(llen, FAIL); 578 } else { 579 result(llen, OK); 580 } 581 return ret; 582 } 583 584 585 #define EXPECT_STREQ(cond, expr, cmp) \ 586 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 587 588 static __attribute__((unused)) 589 int expect_streq(const char *expr, int llen, const char *cmp) 590 { 591 int ret = 0; 592 593 llen += printf(" = <%s> ", expr); 594 if (strcmp(expr, cmp) != 0) { 595 ret = 1; 596 result(llen, FAIL); 597 } else { 598 result(llen, OK); 599 } 600 return ret; 601 } 602 603 604 #define EXPECT_STRNE(cond, expr, cmp) \ 605 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 606 607 static __attribute__((unused)) 608 int expect_strne(const char *expr, int llen, const char *cmp) 609 { 610 int ret = 0; 611 612 llen += printf(" = <%s> ", expr); 613 if (strcmp(expr, cmp) == 0) { 614 ret = 1; 615 result(llen, FAIL); 616 } else { 617 result(llen, OK); 618 } 619 return ret; 620 } 621 622 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \ 623 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0) 624 625 static __attribute__((unused)) 626 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp) 627 { 628 llen += printf(" = %lu <%s> ", (unsigned long)expr, buf); 629 if (strcmp(buf, cmp) != 0) { 630 result(llen, FAIL); 631 return 1; 632 } 633 if (expr != val) { 634 result(llen, FAIL); 635 return 1; 636 } 637 638 result(llen, OK); 639 return 0; 640 } 641 642 #define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \ 643 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0) 644 645 static __attribute__((unused)) 646 int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno) 647 { 648 char *endptr; 649 int actual_errno, actual_chars; 650 intmax_t r; 651 652 errno = 0; 653 if (func == strtol) { 654 r = strtol(input, &endptr, base); 655 } else if (func == strtoul) { 656 r = strtoul(input, &endptr, base); 657 } else { 658 result(llen, FAIL); 659 return 1; 660 } 661 actual_errno = errno; 662 actual_chars = endptr - input; 663 664 llen += printf(" %lld = %lld", (long long)expected, (long long)r); 665 if (r != expected) { 666 result(llen, FAIL); 667 return 1; 668 } 669 if (expected_chars == -1) { 670 if (*endptr != '\0') { 671 result(llen, FAIL); 672 return 1; 673 } 674 } else if (expected_chars != actual_chars) { 675 result(llen, FAIL); 676 return 1; 677 } 678 if (actual_errno != expected_errno) { 679 result(llen, FAIL); 680 return 1; 681 } 682 683 result(llen, OK); 684 return 0; 685 } 686 687 /* declare tests based on line numbers. There must be exactly one test per line. */ 688 #define CASE_TEST(name) \ 689 case __LINE__: llen += printf("%d %s", test, #name); 690 691 __attribute__((constructor)) 692 static void constructor1(void) 693 { 694 constructor_test_value |= 1 << 0; 695 } 696 697 __attribute__((constructor)) 698 static void constructor2(int argc, char **argv, char **envp) 699 { 700 if (argc && argv && envp) 701 constructor_test_value |= 1 << 1; 702 } 703 704 int run_startup(int min, int max) 705 { 706 int test; 707 int ret = 0; 708 /* kernel at least passes HOME and TERM, shell passes more */ 709 int env_total = 2; 710 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 711 extern char end; 712 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 713 /* differ from nolibc, both glibc and musl have no global _auxv */ 714 const unsigned long *test_auxv = (void *)-1; 715 #ifdef NOLIBC 716 test_auxv = _auxv; 717 #endif 718 719 for (test = min; test >= 0 && test <= max; test++) { 720 int llen = 0; /* line length */ 721 722 /* avoid leaving empty lines below, this will insert holes into 723 * test numbers. 724 */ 725 switch (test + __LINE__ + 1) { 726 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 727 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 728 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 729 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 730 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 731 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 732 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 733 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 734 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 735 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 736 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 737 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 738 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 739 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 740 CASE_TEST(constructor); EXPECT_EQ(is_nolibc, constructor_test_value, 0x3); break; 741 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break; 742 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 0x3); break; 743 case __LINE__: 744 return ret; /* must be last */ 745 /* note: do not set any defaults so as to permit holes above */ 746 } 747 } 748 return ret; 749 } 750 751 752 /* used by some syscall tests below */ 753 int test_getdents64(const char *dir) 754 { 755 char buffer[4096]; 756 int fd, ret; 757 int err; 758 759 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 760 if (ret < 0) 761 return ret; 762 763 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 764 err = errno; 765 close(fd); 766 767 errno = err; 768 return ret; 769 } 770 771 static int test_dirent(void) 772 { 773 int comm = 0, cmdline = 0; 774 struct dirent dirent, *result; 775 DIR *dir; 776 int ret; 777 778 dir = opendir("/proc/self"); 779 if (!dir) 780 return 1; 781 782 while (1) { 783 errno = 0; 784 ret = readdir_r(dir, &dirent, &result); 785 if (ret != 0) 786 return 1; 787 if (!result) 788 break; 789 790 if (strcmp(dirent.d_name, "comm") == 0) 791 comm++; 792 else if (strcmp(dirent.d_name, "cmdline") == 0) 793 cmdline++; 794 } 795 796 if (errno) 797 return 1; 798 799 ret = closedir(dir); 800 if (ret) 801 return 1; 802 803 if (comm != 1 || cmdline != 1) 804 return 1; 805 806 return 0; 807 } 808 809 int test_getrandom(void) 810 { 811 uint64_t rng = 0; 812 ssize_t ret; 813 814 ret = getrandom(&rng, sizeof(rng), GRND_NONBLOCK); 815 if (ret == -1 && errno == EAGAIN) 816 return 0; /* No entropy available yet */ 817 818 if (ret != sizeof(rng)) 819 return ret; 820 821 if (!rng) { 822 errno = EINVAL; 823 return -1; 824 } 825 826 return 0; 827 } 828 829 int test_getpagesize(void) 830 { 831 int x = getpagesize(); 832 int c; 833 834 if (x < 0) 835 return x; 836 837 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 838 /* 839 * x86 family is always 4K page. 840 */ 841 c = (x == 4096); 842 #elif defined(__aarch64__) 843 /* 844 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 845 * which are selected at kernel compilation time. 846 */ 847 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 848 #else 849 /* 850 * Assuming other architectures must have at least 4K page. 851 */ 852 c = (x >= 4096); 853 #endif 854 855 return !c; 856 } 857 858 int test_file_stream(void) 859 { 860 FILE *f; 861 int r; 862 863 f = fopen("/dev/null", "r"); 864 if (!f) 865 return -1; 866 867 errno = 0; 868 r = fwrite("foo", 1, 3, f); 869 if (r != 0 || errno != EBADF) { 870 fclose(f); 871 return -1; 872 } 873 874 r = fclose(f); 875 if (r == EOF) 876 return -1; 877 878 return 0; 879 } 880 881 int test_file_stream_wsr(void) 882 { 883 const char dataout[] = "foo"; 884 const size_t datasz = sizeof(dataout); 885 char datain[datasz]; 886 int fd, r; 887 FILE *f; 888 889 fd = open("/tmp", O_TMPFILE | O_RDWR, 0644); 890 if (fd == -1) 891 return -1; 892 893 f = fdopen(fd, "w+"); 894 if (!f) 895 return -1; 896 897 errno = 0; 898 r = fwrite(dataout, 1, datasz, f); 899 if (r != datasz) 900 return -1; 901 902 /* Attempt to read from the file without rewinding, 903 * we should read 0 items. 904 */ 905 r = fread(datain, 1, datasz, f); 906 if (r) 907 return -1; 908 909 /* Rewind the file to the start */ 910 r = fseek(f, 0, SEEK_SET); 911 if (r) 912 return -1; 913 914 /* Attempt to read back more than was written to 915 * make sure we handle short reads properly. 916 * fread() should return the number of complete items. 917 */ 918 r = fread(datain, 1, datasz + 1, f); 919 if (r != datasz) 920 return -1; 921 922 /* Data we read should match the data we just wrote */ 923 if (memcmp(datain, dataout, datasz) != 0) 924 return -1; 925 926 r = fclose(f); 927 if (r) 928 return -1; 929 930 return 0; 931 } 932 933 enum fork_type { 934 FORK_STANDARD, 935 FORK_VFORK, 936 }; 937 938 int test_fork(enum fork_type type) 939 { 940 int status; 941 pid_t pid; 942 943 /* flush the printf buffer to avoid child flush it */ 944 fflush(stdout); 945 fflush(stderr); 946 947 switch (type) { 948 case FORK_STANDARD: 949 pid = fork(); 950 break; 951 case FORK_VFORK: 952 pid = vfork(); 953 break; 954 default: 955 return 1; 956 } 957 958 switch (pid) { 959 case -1: 960 return 1; 961 962 case 0: 963 _exit(123); 964 965 default: 966 pid = waitpid(pid, &status, 0); 967 968 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 969 } 970 } 971 972 int test_stat_timestamps(void) 973 { 974 struct stat st; 975 976 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 977 return 1; 978 979 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 980 return 1; 981 982 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 983 return 1; 984 985 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 986 return 1; 987 988 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 989 return 1; 990 991 return 0; 992 } 993 994 int test_timer(void) 995 { 996 struct itimerspec timerspec; 997 struct sigevent evp; 998 timer_t timer; 999 int ret; 1000 1001 evp.sigev_notify = SIGEV_NONE; 1002 1003 ret = timer_create(CLOCK_MONOTONIC, &evp, &timer); 1004 if (ret) 1005 return ret; 1006 1007 timerspec = (struct itimerspec) { 1008 .it_value.tv_sec = 1000000, 1009 }; 1010 ret = timer_settime(timer, 0, &timerspec, NULL); 1011 if (ret) 1012 goto err; 1013 1014 timerspec = (struct itimerspec) { 1015 .it_value.tv_sec = -1, 1016 .it_value.tv_nsec = -1, 1017 .it_interval.tv_sec = -1, 1018 .it_interval.tv_nsec = -1, 1019 }; 1020 ret = timer_gettime(timer, &timerspec); 1021 if (ret) 1022 goto err; 1023 1024 errno = EINVAL; 1025 ret = -1; 1026 1027 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec) 1028 goto err; 1029 1030 if (timerspec.it_value.tv_sec > 1000000) 1031 goto err; 1032 1033 ret = timer_delete(timer); 1034 if (ret) 1035 return ret; 1036 1037 return 0; 1038 1039 err: 1040 timer_delete(timer); 1041 return ret; 1042 } 1043 1044 int test_timerfd(void) 1045 { 1046 struct itimerspec timerspec; 1047 int timer, ret; 1048 1049 timer = timerfd_create(CLOCK_MONOTONIC, 0); 1050 if (timer == -1) 1051 return -1; 1052 1053 timerspec = (struct itimerspec) { 1054 .it_value.tv_sec = 1000000, 1055 }; 1056 ret = timerfd_settime(timer, 0, &timerspec, NULL); 1057 if (ret) 1058 goto err; 1059 1060 timerspec = (struct itimerspec) { 1061 .it_value.tv_sec = -1, 1062 .it_value.tv_nsec = -1, 1063 .it_interval.tv_sec = -1, 1064 .it_interval.tv_nsec = -1, 1065 }; 1066 ret = timerfd_gettime(timer, &timerspec); 1067 if (ret) 1068 goto err; 1069 1070 errno = EINVAL; 1071 ret = -1; 1072 1073 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec) 1074 goto err; 1075 1076 if (timerspec.it_value.tv_sec > 1000000) 1077 goto err; 1078 1079 ret = close(timer); 1080 if (ret) 1081 return ret; 1082 1083 return 0; 1084 1085 err: 1086 close(timer); 1087 return ret; 1088 } 1089 1090 int test_uname(void) 1091 { 1092 struct utsname buf; 1093 char osrelease[sizeof(buf.release)]; 1094 ssize_t r; 1095 int fd; 1096 1097 memset(&buf.domainname, 'P', sizeof(buf.domainname)); 1098 1099 if (uname(&buf)) 1100 return 1; 1101 1102 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname))) 1103 return 1; 1104 1105 fd = open("/proc/sys/kernel/osrelease", O_RDONLY); 1106 if (fd == -1) 1107 return 1; 1108 1109 r = read(fd, osrelease, sizeof(osrelease)); 1110 if (r == -1) 1111 return 1; 1112 1113 close(fd); 1114 1115 if (osrelease[r - 1] == '\n') 1116 r--; 1117 1118 /* Validate one of the later fields to ensure field sizes are correct */ 1119 if (strncmp(osrelease, buf.release, r)) 1120 return 1; 1121 1122 /* Ensure the field domainname is set, it is missing from struct old_utsname */ 1123 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname)) 1124 return 1; 1125 1126 return 0; 1127 } 1128 1129 int test_mmap_munmap(void) 1130 { 1131 int ret, fd, i, page_size; 1132 void *mem; 1133 size_t file_size, length, mem_length; 1134 off_t offset, pa_offset; 1135 struct stat stat_buf; 1136 const char * const files[] = { 1137 "/dev/zero", 1138 "/proc/1/exe", "/proc/self/exe", 1139 argv0, 1140 NULL 1141 }; 1142 1143 page_size = getpagesize(); 1144 if (page_size < 0) 1145 return 1; 1146 1147 /* find a right file to mmap, existed and accessible */ 1148 for (i = 0; files[i] != NULL; i++) { 1149 ret = fd = open(files[i], O_RDONLY); 1150 if (ret == -1) 1151 continue; 1152 else 1153 break; 1154 } 1155 if (ret == -1) 1156 return 1; 1157 1158 ret = stat(files[i], &stat_buf); 1159 if (ret == -1) 1160 goto end; 1161 1162 /* file size of the special /dev/zero is 0, let's assign one manually */ 1163 if (i == 0) 1164 file_size = 3*page_size; 1165 else 1166 file_size = stat_buf.st_size; 1167 1168 offset = file_size - 1; 1169 if (offset < 0) 1170 offset = 0; 1171 length = file_size - offset; 1172 pa_offset = offset & ~(page_size - 1); 1173 mem_length = length + offset - pa_offset; 1174 1175 mem = mmap(NULL, mem_length, PROT_READ, MAP_SHARED, fd, pa_offset); 1176 if (mem == MAP_FAILED) { 1177 ret = 1; 1178 goto end; 1179 } 1180 1181 mem = mremap(mem, mem_length, mem_length * 2, MREMAP_MAYMOVE, 0); 1182 if (mem == MAP_FAILED) { 1183 munmap(mem, mem_length); 1184 ret = 1; 1185 goto end; 1186 } 1187 1188 ret = munmap(mem, mem_length * 2); 1189 1190 end: 1191 close(fd); 1192 return !!ret; 1193 } 1194 1195 int test_pipe(void) 1196 { 1197 const char *const msg = "hello, nolibc"; 1198 int pipefd[2]; 1199 char buf[32]; 1200 size_t len; 1201 1202 if (pipe(pipefd) == -1) 1203 return 1; 1204 1205 write(pipefd[1], msg, strlen(msg)); 1206 close(pipefd[1]); 1207 len = read(pipefd[0], buf, sizeof(buf)); 1208 close(pipefd[0]); 1209 1210 if (len != strlen(msg)) 1211 return 1; 1212 1213 return !!memcmp(buf, msg, len); 1214 } 1215 1216 int test_rlimit(void) 1217 { 1218 struct rlimit rlim = { 1219 .rlim_cur = 1 << 20, 1220 .rlim_max = 1 << 21, 1221 }; 1222 int ret; 1223 1224 ret = setrlimit(RLIMIT_CORE, &rlim); 1225 if (ret) 1226 return -1; 1227 1228 rlim.rlim_cur = 0; 1229 rlim.rlim_max = 0; 1230 1231 ret = getrlimit(RLIMIT_CORE, &rlim); 1232 if (ret) 1233 return -1; 1234 1235 if (rlim.rlim_cur != 1 << 20) 1236 return -1; 1237 if (rlim.rlim_max != 1 << 21) 1238 return -1; 1239 1240 return 0; 1241 } 1242 1243 int test_openat(void) 1244 { 1245 int dev, null; 1246 1247 dev = openat(AT_FDCWD, "/dev", O_DIRECTORY); 1248 if (dev < 0) 1249 return -1; 1250 1251 null = openat(dev, "null", O_RDONLY); 1252 close(dev); 1253 if (null < 0) 1254 return -1; 1255 1256 close(null); 1257 return 0; 1258 } 1259 1260 int test_namespace(void) 1261 { 1262 int original_ns, new_ns, ret; 1263 ino_t original_ns_ino; 1264 struct stat stat_buf; 1265 1266 original_ns = open("/proc/self/ns/uts", O_RDONLY); 1267 if (original_ns == -1) 1268 return -1; 1269 1270 ret = fstat(original_ns, &stat_buf); 1271 if (ret) 1272 goto out; 1273 1274 original_ns_ino = stat_buf.st_ino; 1275 1276 ret = unshare(CLONE_NEWUTS); 1277 if (ret) 1278 goto out; 1279 1280 new_ns = open("/proc/self/ns/uts", O_RDONLY); 1281 if (new_ns == -1) { 1282 ret = new_ns; 1283 goto out; 1284 } 1285 1286 ret = fstat(new_ns, &stat_buf); 1287 close(new_ns); 1288 if (ret) 1289 goto out; 1290 1291 if (stat_buf.st_ino == original_ns_ino) { 1292 errno = EINVAL; 1293 ret = -1; 1294 goto out; 1295 } 1296 1297 ret = setns(original_ns, CLONE_NEWUTS); 1298 if (ret) 1299 goto out; 1300 1301 new_ns = open("/proc/self/ns/uts", O_RDONLY); 1302 if (new_ns == -1) { 1303 ret = new_ns; 1304 goto out; 1305 } 1306 1307 ret = fstat(new_ns, &stat_buf); 1308 if (ret) 1309 goto out; 1310 1311 close(new_ns); 1312 1313 if (stat_buf.st_ino != original_ns_ino) { 1314 errno = EINVAL; 1315 ret = -1; 1316 goto out; 1317 } 1318 1319 ret = 0; 1320 1321 out: 1322 close(original_ns); 1323 return ret; 1324 } 1325 1326 /* Run syscall tests between IDs <min> and <max>. 1327 * Return 0 on success, non-zero on failure. 1328 */ 1329 int run_syscall(int min, int max) 1330 { 1331 struct timeval tv; 1332 struct timezone tz; 1333 struct timespec ts; 1334 struct stat stat_buf; 1335 int euid0; 1336 int proc; 1337 int test; 1338 int tmp; 1339 struct iovec iov_one = { 1340 .iov_base = &tmp, 1341 .iov_len = 1, 1342 }; 1343 int ret = 0; 1344 void *p1, *p2; 1345 int has_gettid = 1; 1346 int has_brk; 1347 1348 /* <proc> indicates whether or not /proc is mounted */ 1349 proc = stat("/proc", &stat_buf) == 0; 1350 1351 /* this will be used to skip certain tests that can't be run unprivileged */ 1352 euid0 = geteuid() == 0; 1353 1354 /* from 2.30, glibc provides gettid() */ 1355 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 1356 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 1357 #endif 1358 1359 /* on musl setting brk()/sbrk() always fails */ 1360 has_brk = brk(0) == 0; 1361 1362 for (test = min; test >= 0 && test <= max; test++) { 1363 int llen = 0; /* line length */ 1364 1365 /* avoid leaving empty lines below, this will insert holes into 1366 * test numbers. 1367 */ 1368 switch (test + __LINE__ + 1) { 1369 CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break; 1370 CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break; 1371 CASE_TEST(clock_getres); EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break; 1372 CASE_TEST(clock_gettime); EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break; 1373 CASE_TEST(clock_settime); EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break; 1374 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 1375 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 1376 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 1377 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 1378 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 1379 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1380 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 1381 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 1382 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break; 1383 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break; 1384 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break; 1385 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 1386 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 1387 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 1388 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 1389 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 1390 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 1391 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 1392 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 1393 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 1394 CASE_TEST(clock_nanosleep); ts.tv_nsec = -1; EXPECT_EQ(1, EINVAL, clock_nanosleep(CLOCK_REALTIME, 0, &ts, NULL)); break; 1395 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 1396 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 1397 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1398 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1399 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1400 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1401 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 1402 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 1403 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 1404 CASE_TEST(fchdir_stdin); EXPECT_SYSER(1, fchdir(STDIN_FILENO), -1, ENOTDIR); break; 1405 CASE_TEST(fchdir_badfd); EXPECT_SYSER(1, fchdir(-1), -1, EBADF); break; 1406 CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break; 1407 CASE_TEST(file_stream_wsr); EXPECT_SYSZR(1, test_file_stream_wsr()); break; 1408 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break; 1409 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 1410 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 1411 CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break; 1412 CASE_TEST(getrandom); EXPECT_SYSZR(1, test_getrandom()); break; 1413 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 1414 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 1415 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 1416 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 1417 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 1418 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 1419 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 1420 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 1421 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 1422 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 1423 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 1424 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 1425 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 1426 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 1427 CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break; 1428 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break; 1429 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break; 1430 CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break; 1431 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 1432 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 1433 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 1434 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 1435 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 1436 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 1437 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break; 1438 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 1439 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 1440 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 1441 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; 1442 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 1443 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 1444 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 1445 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 1446 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 1447 CASE_TEST(timer); EXPECT_SYSZR(1, test_timer()); break; 1448 CASE_TEST(timerfd); EXPECT_SYSZR(1, test_timerfd()); break; 1449 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break; 1450 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break; 1451 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 1452 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 1453 CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break; 1454 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 1455 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 1456 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 1457 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 1458 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 1459 CASE_TEST(readv_badf); EXPECT_SYSER(1, readv(-1, &iov_one, 1), -1, EBADF); break; 1460 CASE_TEST(readv_zero); EXPECT_SYSZR(1, readv(0, NULL, 0)); break; 1461 CASE_TEST(writev_badf); EXPECT_SYSER(1, writev(-1, &iov_one, 1), -1, EBADF); break; 1462 CASE_TEST(writev_zero); EXPECT_SYSZR(1, writev(1, NULL, 0)); break; 1463 CASE_TEST(ptrace); EXPECT_SYSER(1, ptrace(PTRACE_CONT, getpid(), NULL, NULL), -1, ESRCH); break; 1464 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 1465 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 1466 CASE_TEST(namespace); EXPECT_SYSZR(euid0 && proc, test_namespace()); break; 1467 case __LINE__: 1468 return ret; /* must be last */ 1469 /* note: do not set any defaults so as to permit holes above */ 1470 } 1471 } 1472 return ret; 1473 } 1474 1475 int test_difftime(void) 1476 { 1477 if (difftime(200., 100.) != 100.) 1478 return 1; 1479 1480 if (difftime(100., 200.) != -100.) 1481 return 1; 1482 1483 return 0; 1484 } 1485 1486 int test_time_types(void) 1487 { 1488 #ifdef NOLIBC 1489 struct __kernel_timespec kts; 1490 struct timespec ts; 1491 1492 if (!__builtin_types_compatible_p(time_t, __kernel_time64_t)) 1493 return 1; 1494 1495 if (sizeof(ts) != sizeof(kts)) 1496 return 1; 1497 1498 if (!__builtin_types_compatible_p(__typeof__(ts.tv_sec), __typeof__(kts.tv_sec))) 1499 return 1; 1500 1501 if (!__builtin_types_compatible_p(__typeof__(ts.tv_nsec), __typeof__(kts.tv_nsec))) 1502 return 1; 1503 1504 if (offsetof(__typeof__(ts), tv_sec) != offsetof(__typeof__(kts), tv_sec)) 1505 return 1; 1506 1507 if (offsetof(__typeof__(ts), tv_nsec) != offsetof(__typeof__(kts), tv_nsec)) 1508 return 1; 1509 #endif /* NOLIBC */ 1510 1511 return 0; 1512 } 1513 1514 int run_stdlib(int min, int max) 1515 { 1516 int test; 1517 int ret = 0; 1518 1519 for (test = min; test >= 0 && test <= max; test++) { 1520 int llen = 0; /* line length */ 1521 1522 /* For functions that take a long buffer, like strlcat() 1523 * Add some more chars after the \0, to test functions that overwrite the buffer set 1524 * the \0 at the exact right position. 1525 */ 1526 char buf[11] = "test123456"; 1527 buf[4] = '\0'; 1528 1529 1530 /* avoid leaving empty lines below, this will insert holes into 1531 * test numbers. 1532 */ 1533 switch (test + __LINE__ + 1) { 1534 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 1535 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 1536 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 1537 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 1538 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 1539 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 1540 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 1541 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 1542 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 1543 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 1544 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 1545 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 1546 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break; 1547 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break; 1548 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break; 1549 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break; 1550 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break; 1551 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break; 1552 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break; 1553 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break; 1554 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break; 1555 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break; 1556 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break; 1557 CASE_TEST(strstr_foobar_foo); EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break; 1558 CASE_TEST(strstr_foobar_bar); EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break; 1559 CASE_TEST(strstr_foobar_baz); EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break; 1560 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 1561 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 1562 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 1563 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 1564 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 1565 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 1566 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 1567 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 1568 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 1569 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 1570 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 1571 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 1572 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 1573 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 1574 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 1575 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 1576 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 1577 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 1578 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 1579 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 1580 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 1581 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 1582 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1583 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1584 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1585 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1586 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1587 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1588 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1589 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1590 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1591 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1592 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1593 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1594 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1595 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1596 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1597 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1598 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1599 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1600 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1601 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1602 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1603 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1604 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1605 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1606 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1607 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1608 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1609 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1610 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break; 1611 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break; 1612 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break; 1613 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break; 1614 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break; 1615 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break; 1616 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break; 1617 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break; 1618 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break; 1619 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break; 1620 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break; 1621 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break; 1622 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break; 1623 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break; 1624 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break; 1625 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break; 1626 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break; 1627 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break; 1628 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break; 1629 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break; 1630 CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break; 1631 CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break; 1632 CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break; 1633 CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break; 1634 CASE_TEST(abs); EXPECT_EQ(1, abs(-10), 10); break; 1635 CASE_TEST(abs_noop); EXPECT_EQ(1, abs(10), 10); break; 1636 CASE_TEST(difftime); EXPECT_ZR(1, test_difftime()); break; 1637 CASE_TEST(memchr_foobar6_o); EXPECT_STREQ(1, memchr("foobar", 'o', 6), "oobar"); break; 1638 CASE_TEST(memchr_foobar3_b); EXPECT_STRZR(1, memchr("foobar", 'b', 3)); break; 1639 CASE_TEST(time_types); EXPECT_ZR(is_nolibc, test_time_types()); break; 1640 1641 case __LINE__: 1642 return ret; /* must be last */ 1643 /* note: do not set any defaults so as to permit holes above */ 1644 } 1645 } 1646 return ret; 1647 } 1648 1649 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1650 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1651 1652 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1653 { 1654 char buf[100]; 1655 va_list args; 1656 ssize_t w; 1657 int ret; 1658 1659 1660 va_start(args, fmt); 1661 /* Only allow writing 21 bytes, to test truncation */ 1662 w = vsnprintf(buf, 21, fmt, args); 1663 va_end(args); 1664 1665 if (w != c) { 1666 llen += printf(" written(%d) != %d", (int)w, c); 1667 result(llen, FAIL); 1668 return 1; 1669 } 1670 1671 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1672 ret = strncmp(expected, buf, c); 1673 1674 result(llen, ret ? FAIL : OK); 1675 return ret; 1676 } 1677 1678 static int test_scanf(void) 1679 { 1680 unsigned long long ull; 1681 unsigned long ul; 1682 unsigned int u; 1683 long long ll; 1684 long l; 1685 void *p; 1686 int i; 1687 1688 /* return __LINE__ to point to the specific failure */ 1689 1690 /* test EOF */ 1691 if (sscanf("", "foo") != EOF) 1692 return __LINE__; 1693 1694 /* test simple literal without placeholder */ 1695 if (sscanf("foo", "foo") != 0) 1696 return __LINE__; 1697 1698 /* test single placeholder */ 1699 if (sscanf("123", "%d", &i) != 1) 1700 return __LINE__; 1701 1702 if (i != 123) 1703 return __LINE__; 1704 1705 /* test multiple place holders and separators */ 1706 if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3) 1707 return __LINE__; 1708 1709 if (i != 123) 1710 return __LINE__; 1711 1712 if (u != 456) 1713 return __LINE__; 1714 1715 if (p != (void *)0x90) 1716 return __LINE__; 1717 1718 /* test space handling */ 1719 if (sscanf("a b1", "a b%d", &i) != 1) 1720 return __LINE__; 1721 1722 if (i != 1) 1723 return __LINE__; 1724 1725 /* test literal percent */ 1726 if (sscanf("a%1", "a%%%d", &i) != 1) 1727 return __LINE__; 1728 1729 if (i != 1) 1730 return __LINE__; 1731 1732 /* test stdint.h types */ 1733 if (sscanf("1|2|3|4|5|6", 1734 "%d|%ld|%lld|%u|%lu|%llu", 1735 &i, &l, &ll, &u, &ul, &ull) != 6) 1736 return __LINE__; 1737 1738 if (i != 1 || l != 2 || ll != 3 || 1739 u != 4 || ul != 5 || ull != 6) 1740 return __LINE__; 1741 1742 return 0; 1743 } 1744 1745 int test_strerror(void) 1746 { 1747 char buf[100]; 1748 ssize_t ret; 1749 1750 memset(buf, 'A', sizeof(buf)); 1751 1752 errno = EINVAL; 1753 ret = snprintf(buf, sizeof(buf), "%m"); 1754 if (is_nolibc) { 1755 if (ret < 6 || memcmp(buf, "errno=", 6)) 1756 return 1; 1757 } 1758 1759 return 0; 1760 } 1761 1762 static int test_printf_error(void) 1763 { 1764 int fd, ret, saved_errno; 1765 1766 fd = open("/dev/full", O_RDWR); 1767 if (fd == -1) 1768 return 1; 1769 1770 errno = 0; 1771 ret = dprintf(fd, "foo"); 1772 saved_errno = errno; 1773 close(fd); 1774 1775 if (ret != -1) 1776 return 2; 1777 1778 if (saved_errno != ENOSPC) 1779 return 3; 1780 1781 return 0; 1782 } 1783 1784 static int run_printf(int min, int max) 1785 { 1786 int test; 1787 int ret = 0; 1788 1789 for (test = min; test >= 0 && test <= max; test++) { 1790 int llen = 0; /* line length */ 1791 1792 /* avoid leaving empty lines below, this will insert holes into 1793 * test numbers. 1794 */ 1795 switch (test + __LINE__ + 1) { 1796 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1797 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1798 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1799 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1800 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1801 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1802 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1803 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1804 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1805 CASE_TEST(uintmax_t); EXPECT_VFPRINTF(20, "18446744073709551615", "%ju", 0xffffffffffffffffULL); break; 1806 CASE_TEST(intmax_t); EXPECT_VFPRINTF(20, "-9223372036854775807", "%jd", 0x8000000000000001LL); break; 1807 CASE_TEST(truncation); EXPECT_VFPRINTF(25, "01234567890123456789", "%s", "0123456789012345678901234"); break; 1808 CASE_TEST(string_width); EXPECT_VFPRINTF(10, " 1", "%10s", "1"); break; 1809 CASE_TEST(number_width); EXPECT_VFPRINTF(10, " 1", "%10d", 1); break; 1810 CASE_TEST(width_trunc); EXPECT_VFPRINTF(25, " ", "%25d", 1); break; 1811 CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break; 1812 CASE_TEST(strerror); EXPECT_ZR(1, test_strerror()); break; 1813 CASE_TEST(printf_error); EXPECT_ZR(1, test_printf_error()); break; 1814 case __LINE__: 1815 return ret; /* must be last */ 1816 /* note: do not set any defaults so as to permit holes above */ 1817 } 1818 } 1819 return ret; 1820 } 1821 1822 __attribute__((no_sanitize("undefined"))) 1823 static int smash_stack(void) 1824 { 1825 char buf[100]; 1826 volatile char *ptr = buf; 1827 size_t i; 1828 1829 for (i = 0; i < 200; i++) 1830 ptr[i] = 'P'; 1831 1832 return 1; 1833 } 1834 1835 static int run_protection(int min __attribute__((unused)), 1836 int max __attribute__((unused))) 1837 { 1838 pid_t pid; 1839 int llen = 0, status; 1840 struct rlimit rlimit = { 0, 0 }; 1841 1842 llen += printf("0 -fstackprotector "); 1843 1844 #if !defined(_NOLIBC_STACKPROTECTOR) 1845 llen += printf("not supported"); 1846 result(llen, SKIPPED); 1847 return 0; 1848 #endif 1849 1850 #if defined(_NOLIBC_STACKPROTECTOR) 1851 if (!__stack_chk_guard) { 1852 llen += printf("__stack_chk_guard not initialized"); 1853 result(llen, FAIL); 1854 return 1; 1855 } 1856 #endif 1857 1858 pid = -1; 1859 pid = fork(); 1860 1861 switch (pid) { 1862 case -1: 1863 llen += printf("fork()"); 1864 result(llen, FAIL); 1865 return 1; 1866 1867 case 0: 1868 close(STDOUT_FILENO); 1869 close(STDERR_FILENO); 1870 1871 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1872 setrlimit(RLIMIT_CORE, &rlimit); 1873 smash_stack(); 1874 return 1; 1875 1876 default: 1877 pid = waitpid(pid, &status, 0); 1878 1879 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1880 llen += printf("waitpid()"); 1881 result(llen, FAIL); 1882 return 1; 1883 } 1884 result(llen, OK); 1885 return 0; 1886 } 1887 } 1888 1889 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1890 int prepare(void) 1891 { 1892 struct stat stat_buf; 1893 1894 /* It's possible that /dev doesn't even exist or was not mounted, so 1895 * we'll try to create it, mount it, or create minimal entries into it. 1896 * We want at least /dev/null and /dev/console. 1897 */ 1898 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1899 if (stat("/dev/console", &stat_buf) != 0 || 1900 stat("/dev/null", &stat_buf) != 0 || 1901 stat("/dev/zero", &stat_buf) != 0 || 1902 stat("/dev/full", &stat_buf) != 0) { 1903 /* try devtmpfs first, otherwise fall back to manual creation */ 1904 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1905 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1906 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1907 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1908 mknod("/dev/full", 0666 | S_IFCHR, makedev(1, 7)); 1909 } 1910 } 1911 } 1912 1913 /* If no /dev/console was found before calling init, stdio is closed so 1914 * we need to reopen it from /dev/console. If it failed above, it will 1915 * still fail here and we cannot emit a message anyway. 1916 */ 1917 if (close(dup(1)) == -1) { 1918 int fd = open("/dev/console", O_RDWR); 1919 1920 if (fd >= 0) { 1921 if (fd != 0) 1922 dup2(fd, 0); 1923 if (fd != 1) 1924 dup2(fd, 1); 1925 if (fd != 2) 1926 dup2(fd, 2); 1927 if (fd > 2) 1928 close(fd); 1929 puts("\nSuccessfully reopened /dev/console."); 1930 } 1931 } 1932 1933 /* try to mount /proc if not mounted. Silently fail otherwise */ 1934 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1935 if (stat("/proc/self", &stat_buf) != 0) { 1936 /* If not mountable, remove /proc completely to avoid misuse */ 1937 if (mount("none", "/proc", "proc", 0, 0) != 0) 1938 rmdir("/proc"); 1939 } 1940 } 1941 1942 /* some tests rely on a writable /tmp */ 1943 mkdir("/tmp", 0755); 1944 1945 return 0; 1946 } 1947 1948 /* This is the definition of known test names, with their functions */ 1949 static const struct test test_names[] = { 1950 /* add new tests here */ 1951 { .name = "startup", .func = run_startup }, 1952 { .name = "syscall", .func = run_syscall }, 1953 { .name = "stdlib", .func = run_stdlib }, 1954 { .name = "printf", .func = run_printf }, 1955 { .name = "protection", .func = run_protection }, 1956 { 0 } 1957 }; 1958 1959 static int is_setting_valid(char *test) 1960 { 1961 int idx, len, test_len, valid = 0; 1962 char delimiter; 1963 1964 if (!test) 1965 return valid; 1966 1967 test_len = strlen(test); 1968 1969 for (idx = 0; test_names[idx].name; idx++) { 1970 len = strlen(test_names[idx].name); 1971 if (test_len < len) 1972 continue; 1973 1974 if (strncmp(test, test_names[idx].name, len) != 0) 1975 continue; 1976 1977 delimiter = test[len]; 1978 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1979 continue; 1980 1981 valid = 1; 1982 break; 1983 } 1984 1985 return valid; 1986 } 1987 1988 int main(int argc, char **argv, char **envp) 1989 { 1990 int min = 0; 1991 int max = INT_MAX; 1992 int ret = 0; 1993 int err; 1994 int idx; 1995 char *test; 1996 1997 argv0 = argv[0]; 1998 test_argc = argc; 1999 test_argv = argv; 2000 test_envp = envp; 2001 2002 /* when called as init, it's possible that no console was opened, for 2003 * example if no /dev file system was provided. We'll check that fd#1 2004 * was opened, and if not we'll attempt to create and open /dev/console 2005 * and /dev/null that we'll use for later tests. 2006 */ 2007 if (getpid() == 1) 2008 prepare(); 2009 2010 /* the definition of a series of tests comes from either argv[1] or the 2011 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 2012 * series of test names and optional ranges: 2013 * syscall:5-15[:.*],stdlib:8-10 2014 */ 2015 test = argv[1]; 2016 if (!is_setting_valid(test)) 2017 test = getenv("NOLIBC_TEST"); 2018 2019 if (is_setting_valid(test)) { 2020 char *comma, *colon, *dash, *value; 2021 2022 do { 2023 comma = strchr(test, ','); 2024 if (comma) 2025 *(comma++) = '\0'; 2026 2027 colon = strchr(test, ':'); 2028 if (colon) 2029 *(colon++) = '\0'; 2030 2031 for (idx = 0; test_names[idx].name; idx++) { 2032 if (strcmp(test, test_names[idx].name) == 0) 2033 break; 2034 } 2035 2036 if (test_names[idx].name) { 2037 /* The test was named, it will be called at least 2038 * once. We may have an optional range at <colon> 2039 * here, which defaults to the full range. 2040 */ 2041 do { 2042 min = 0; max = INT_MAX; 2043 value = colon; 2044 if (value && *value) { 2045 colon = strchr(value, ':'); 2046 if (colon) 2047 *(colon++) = '\0'; 2048 2049 dash = strchr(value, '-'); 2050 if (dash) 2051 *(dash++) = '\0'; 2052 2053 /* support :val: :min-max: :min-: :-max: */ 2054 if (*value) 2055 min = atoi(value); 2056 if (!dash) 2057 max = min; 2058 else if (*dash) 2059 max = atoi(dash); 2060 2061 value = colon; 2062 } 2063 2064 /* now's time to call the test */ 2065 printf("Running test '%s'\n", test_names[idx].name); 2066 err = test_names[idx].func(min, max); 2067 ret += err; 2068 printf("Errors during this test: %d\n\n", err); 2069 } while (colon && *colon); 2070 } else 2071 printf("Ignoring unknown test name '%s'\n", test); 2072 2073 test = comma; 2074 } while (test && *test); 2075 } else { 2076 /* no test mentioned, run everything */ 2077 for (idx = 0; test_names[idx].name; idx++) { 2078 printf("Running test '%s'\n", test_names[idx].name); 2079 err = test_names[idx].func(min, max); 2080 ret += err; 2081 printf("Errors during this test: %d\n\n", err); 2082 } 2083 } 2084 2085 printf("Total number of errors: %d\n", ret); 2086 2087 if (getpid() == 1) { 2088 /* we're running as init, there's no other process on the 2089 * system, thus likely started from a VM for a quick check. 2090 * Exiting will provoke a kernel panic that may be reported 2091 * as an error by Qemu or the hypervisor, while stopping 2092 * cleanly will often be reported as a success. This allows 2093 * to use the output of this program for bisecting kernels. 2094 */ 2095 printf("Leaving init with final status: %d\n", !!ret); 2096 if (ret == 0) 2097 reboot(RB_POWER_OFF); 2098 #if defined(__x86_64__) 2099 /* QEMU started with "-device isa-debug-exit -no-reboot" will 2100 * exit with status code 2N+1 when N is written to 0x501. We 2101 * hard-code the syscall here as it's arch-dependent. 2102 */ 2103 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 2104 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 2105 /* if it does nothing, fall back to the regular panic */ 2106 #endif 2107 } 2108 2109 printf("Exiting with status %d\n", !!ret); 2110 return !!ret; 2111 } 2112