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