1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #define _GNU_SOURCE 4 #define _LARGEFILE64_SOURCE 5 6 /* libc-specific include files 7 * The program may be built in 3 ways: 8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined 9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present 10 * $(CC) with default libc => NOLIBC* never defined 11 */ 12 #ifndef NOLIBC 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 #ifndef _NOLIBC_STDIO_H 17 /* standard libcs need more includes */ 18 #include <sys/auxv.h> 19 #include <sys/io.h> 20 #include <sys/ioctl.h> 21 #include <sys/mman.h> 22 #include <sys/mount.h> 23 #include <sys/prctl.h> 24 #include <sys/reboot.h> 25 #include <sys/resource.h> 26 #include <sys/stat.h> 27 #include <sys/syscall.h> 28 #include <sys/sysmacros.h> 29 #include <sys/time.h> 30 #include <sys/utsname.h> 31 #include <sys/wait.h> 32 #include <dirent.h> 33 #include <errno.h> 34 #include <fcntl.h> 35 #include <poll.h> 36 #include <sched.h> 37 #include <signal.h> 38 #include <stdarg.h> 39 #include <stddef.h> 40 #include <stdint.h> 41 #include <unistd.h> 42 #include <limits.h> 43 #endif 44 #endif 45 46 #include "nolibc-test-linkage.h" 47 48 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 49 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 50 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 51 52 /* will be used to test initialization of environ */ 53 static char **test_envp; 54 55 /* will be used to test initialization of argv */ 56 static char **test_argv; 57 58 /* will be used to test initialization of argc */ 59 static int test_argc; 60 61 /* will be used by some test cases as readable file, please don't write it */ 62 static const char *argv0; 63 64 /* will be used by constructor tests */ 65 static int constructor_test_value; 66 67 /* definition of a series of tests */ 68 struct test { 69 const char *name; /* test name */ 70 int (*func)(int min, int max); /* handler */ 71 }; 72 73 #ifndef _NOLIBC_STDLIB_H 74 char *itoa(int i) 75 { 76 static char buf[12]; 77 int ret; 78 79 ret = snprintf(buf, sizeof(buf), "%d", i); 80 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 81 } 82 #endif 83 84 #define CASE_ERR(err) \ 85 case err: return #err 86 87 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 88 * or the decimal value for less common ones. 89 */ 90 static const char *errorname(int err) 91 { 92 switch (err) { 93 case 0: return "SUCCESS"; 94 CASE_ERR(EPERM); 95 CASE_ERR(ENOENT); 96 CASE_ERR(ESRCH); 97 CASE_ERR(EINTR); 98 CASE_ERR(EIO); 99 CASE_ERR(ENXIO); 100 CASE_ERR(E2BIG); 101 CASE_ERR(ENOEXEC); 102 CASE_ERR(EBADF); 103 CASE_ERR(ECHILD); 104 CASE_ERR(EAGAIN); 105 CASE_ERR(ENOMEM); 106 CASE_ERR(EACCES); 107 CASE_ERR(EFAULT); 108 CASE_ERR(ENOTBLK); 109 CASE_ERR(EBUSY); 110 CASE_ERR(EEXIST); 111 CASE_ERR(EXDEV); 112 CASE_ERR(ENODEV); 113 CASE_ERR(ENOTDIR); 114 CASE_ERR(EISDIR); 115 CASE_ERR(EINVAL); 116 CASE_ERR(ENFILE); 117 CASE_ERR(EMFILE); 118 CASE_ERR(ENOTTY); 119 CASE_ERR(ETXTBSY); 120 CASE_ERR(EFBIG); 121 CASE_ERR(ENOSPC); 122 CASE_ERR(ESPIPE); 123 CASE_ERR(EROFS); 124 CASE_ERR(EMLINK); 125 CASE_ERR(EPIPE); 126 CASE_ERR(EDOM); 127 CASE_ERR(ERANGE); 128 CASE_ERR(ENOSYS); 129 CASE_ERR(EOVERFLOW); 130 default: 131 return itoa(err); 132 } 133 } 134 135 static void align_result(size_t llen) 136 { 137 const size_t align = 64; 138 char buf[align]; 139 size_t n; 140 141 if (llen >= align) 142 return; 143 144 n = align - llen; 145 memset(buf, ' ', n); 146 buf[n] = '\0'; 147 fputs(buf, stdout); 148 } 149 150 enum RESULT { 151 OK, 152 FAIL, 153 SKIPPED, 154 }; 155 156 static void result(int llen, enum RESULT r) 157 { 158 const char *msg; 159 160 if (r == OK) 161 msg = " [OK]"; 162 else if (r == SKIPPED) 163 msg = "[SKIPPED]"; 164 else 165 msg = " [FAIL]"; 166 167 align_result(llen); 168 puts(msg); 169 } 170 171 /* The tests below are intended to be used by the macroes, which evaluate 172 * expression <expr>, print the status to stdout, and update the "ret" 173 * variable to count failures. The functions themselves return the number 174 * of failures, thus either 0 or 1. 175 */ 176 177 #define EXPECT_ZR(cond, expr) \ 178 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 179 180 static __attribute__((unused)) 181 int expect_zr(int expr, int llen) 182 { 183 int ret = !(expr == 0); 184 185 llen += printf(" = %d ", expr); 186 result(llen, ret ? FAIL : OK); 187 return ret; 188 } 189 190 191 #define EXPECT_NZ(cond, expr, val) \ 192 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 193 194 static __attribute__((unused)) 195 int expect_nz(int expr, int llen) 196 { 197 int ret = !(expr != 0); 198 199 llen += printf(" = %d ", expr); 200 result(llen, ret ? FAIL : OK); 201 return ret; 202 } 203 204 205 #define EXPECT_EQ(cond, expr, val) \ 206 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 207 208 static __attribute__((unused)) 209 int expect_eq(uint64_t expr, int llen, uint64_t val) 210 { 211 int ret = !(expr == val); 212 213 llen += printf(" = %lld ", (long long)expr); 214 result(llen, ret ? FAIL : OK); 215 return ret; 216 } 217 218 219 #define EXPECT_NE(cond, expr, val) \ 220 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 221 222 static __attribute__((unused)) 223 int expect_ne(int expr, int llen, int val) 224 { 225 int ret = !(expr != val); 226 227 llen += printf(" = %d ", expr); 228 result(llen, ret ? FAIL : OK); 229 return ret; 230 } 231 232 233 #define EXPECT_GE(cond, expr, val) \ 234 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 235 236 static __attribute__((unused)) 237 int expect_ge(int expr, int llen, int val) 238 { 239 int ret = !(expr >= val); 240 241 llen += printf(" = %d ", expr); 242 result(llen, ret ? FAIL : OK); 243 return ret; 244 } 245 246 247 #define EXPECT_GT(cond, expr, val) \ 248 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 249 250 static __attribute__((unused)) 251 int expect_gt(int expr, int llen, int val) 252 { 253 int ret = !(expr > val); 254 255 llen += printf(" = %d ", expr); 256 result(llen, ret ? FAIL : OK); 257 return ret; 258 } 259 260 261 #define EXPECT_LE(cond, expr, val) \ 262 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 263 264 static __attribute__((unused)) 265 int expect_le(int expr, int llen, int val) 266 { 267 int ret = !(expr <= val); 268 269 llen += printf(" = %d ", expr); 270 result(llen, ret ? FAIL : OK); 271 return ret; 272 } 273 274 275 #define EXPECT_LT(cond, expr, val) \ 276 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 277 278 static __attribute__((unused)) 279 int expect_lt(int expr, int llen, int val) 280 { 281 int ret = !(expr < val); 282 283 llen += printf(" = %d ", expr); 284 result(llen, ret ? FAIL : OK); 285 return ret; 286 } 287 288 289 #define EXPECT_SYSZR(cond, expr) \ 290 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 291 292 static __attribute__((unused)) 293 int expect_syszr(int expr, int llen) 294 { 295 int ret = 0; 296 297 if (expr) { 298 ret = 1; 299 llen += printf(" = %d %s ", expr, errorname(errno)); 300 result(llen, FAIL); 301 } else { 302 llen += printf(" = %d ", expr); 303 result(llen, OK); 304 } 305 return ret; 306 } 307 308 309 #define EXPECT_SYSEQ(cond, expr, val) \ 310 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 311 312 static __attribute__((unused)) 313 int expect_syseq(int expr, int llen, int val) 314 { 315 int ret = 0; 316 317 if (expr != val) { 318 ret = 1; 319 llen += printf(" = %d %s ", expr, errorname(errno)); 320 result(llen, FAIL); 321 } else { 322 llen += printf(" = %d ", expr); 323 result(llen, OK); 324 } 325 return ret; 326 } 327 328 329 #define EXPECT_SYSNE(cond, expr, val) \ 330 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 331 332 static __attribute__((unused)) 333 int expect_sysne(int expr, int llen, int val) 334 { 335 int ret = 0; 336 337 if (expr == val) { 338 ret = 1; 339 llen += printf(" = %d %s ", expr, errorname(errno)); 340 result(llen, FAIL); 341 } else { 342 llen += printf(" = %d ", expr); 343 result(llen, OK); 344 } 345 return ret; 346 } 347 348 349 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 350 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 351 352 #define EXPECT_SYSER(cond, expr, expret, experr) \ 353 EXPECT_SYSER2(cond, expr, expret, experr, 0) 354 355 static __attribute__((unused)) 356 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 357 { 358 int ret = 0; 359 int _errno = errno; 360 361 llen += printf(" = %d %s ", expr, errorname(_errno)); 362 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 363 ret = 1; 364 if (experr2 == 0) 365 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 366 else 367 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 368 result(llen, FAIL); 369 } else { 370 result(llen, OK); 371 } 372 return ret; 373 } 374 375 376 #define EXPECT_PTRZR(cond, expr) \ 377 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 378 379 static __attribute__((unused)) 380 int expect_ptrzr(const void *expr, int llen) 381 { 382 int ret = 0; 383 384 llen += printf(" = <%p> ", expr); 385 if (expr) { 386 ret = 1; 387 result(llen, FAIL); 388 } else { 389 result(llen, OK); 390 } 391 return ret; 392 } 393 394 395 #define EXPECT_PTRNZ(cond, expr) \ 396 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 397 398 static __attribute__((unused)) 399 int expect_ptrnz(const void *expr, int llen) 400 { 401 int ret = 0; 402 403 llen += printf(" = <%p> ", expr); 404 if (!expr) { 405 ret = 1; 406 result(llen, FAIL); 407 } else { 408 result(llen, OK); 409 } 410 return ret; 411 } 412 413 #define EXPECT_PTREQ(cond, expr, cmp) \ 414 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 415 416 static __attribute__((unused)) 417 int expect_ptreq(const void *expr, int llen, const void *cmp) 418 { 419 int ret = 0; 420 421 llen += printf(" = <%p> ", expr); 422 if (expr != cmp) { 423 ret = 1; 424 result(llen, FAIL); 425 } else { 426 result(llen, OK); 427 } 428 return ret; 429 } 430 431 #define EXPECT_PTRNE(cond, expr, cmp) \ 432 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 433 434 static __attribute__((unused)) 435 int expect_ptrne(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_PTRGE(cond, expr, cmp) \ 450 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 451 452 static __attribute__((unused)) 453 int expect_ptrge(const void *expr, int llen, const void *cmp) 454 { 455 int ret = !(expr >= cmp); 456 457 llen += printf(" = <%p> ", expr); 458 result(llen, ret ? FAIL : OK); 459 return ret; 460 } 461 462 #define EXPECT_PTRGT(cond, expr, cmp) \ 463 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 464 465 static __attribute__((unused)) 466 int expect_ptrgt(const void *expr, int llen, const void *cmp) 467 { 468 int ret = !(expr > cmp); 469 470 llen += printf(" = <%p> ", expr); 471 result(llen, ret ? FAIL : OK); 472 return ret; 473 } 474 475 476 #define EXPECT_PTRLE(cond, expr, cmp) \ 477 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 478 479 static __attribute__((unused)) 480 int expect_ptrle(const void *expr, int llen, const void *cmp) 481 { 482 int ret = !(expr <= cmp); 483 484 llen += printf(" = <%p> ", expr); 485 result(llen, ret ? FAIL : OK); 486 return ret; 487 } 488 489 490 #define EXPECT_PTRLT(cond, expr, cmp) \ 491 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 492 493 static __attribute__((unused)) 494 int expect_ptrlt(const void *expr, int llen, const void *cmp) 495 { 496 int ret = !(expr < cmp); 497 498 llen += printf(" = <%p> ", expr); 499 result(llen, ret ? FAIL : OK); 500 return ret; 501 } 502 503 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 504 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 505 506 #define EXPECT_PTRER(cond, expr, expret, experr) \ 507 EXPECT_PTRER2(cond, expr, expret, experr, 0) 508 509 static __attribute__((unused)) 510 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 511 { 512 int ret = 0; 513 int _errno = errno; 514 515 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 516 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 517 ret = 1; 518 if (experr2 == 0) 519 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 520 else 521 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 522 result(llen, FAIL); 523 } else { 524 result(llen, OK); 525 } 526 return ret; 527 } 528 529 #define EXPECT_STRZR(cond, expr) \ 530 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 531 532 static __attribute__((unused)) 533 int expect_strzr(const char *expr, int llen) 534 { 535 int ret = 0; 536 537 llen += printf(" = <%s> ", expr); 538 if (expr) { 539 ret = 1; 540 result(llen, FAIL); 541 } else { 542 result(llen, OK); 543 } 544 return ret; 545 } 546 547 548 #define EXPECT_STRNZ(cond, expr) \ 549 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 550 551 static __attribute__((unused)) 552 int expect_strnz(const char *expr, int llen) 553 { 554 int ret = 0; 555 556 llen += printf(" = <%s> ", expr); 557 if (!expr) { 558 ret = 1; 559 result(llen, FAIL); 560 } else { 561 result(llen, OK); 562 } 563 return ret; 564 } 565 566 567 #define EXPECT_STREQ(cond, expr, cmp) \ 568 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 569 570 static __attribute__((unused)) 571 int expect_streq(const char *expr, int llen, const char *cmp) 572 { 573 int ret = 0; 574 575 llen += printf(" = <%s> ", expr); 576 if (strcmp(expr, cmp) != 0) { 577 ret = 1; 578 result(llen, FAIL); 579 } else { 580 result(llen, OK); 581 } 582 return ret; 583 } 584 585 586 #define EXPECT_STRNE(cond, expr, cmp) \ 587 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 588 589 static __attribute__((unused)) 590 int expect_strne(const char *expr, int llen, const char *cmp) 591 { 592 int ret = 0; 593 594 llen += printf(" = <%s> ", expr); 595 if (strcmp(expr, cmp) == 0) { 596 ret = 1; 597 result(llen, FAIL); 598 } else { 599 result(llen, OK); 600 } 601 return ret; 602 } 603 604 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \ 605 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0) 606 607 static __attribute__((unused)) 608 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp) 609 { 610 llen += printf(" = %lu <%s> ", expr, buf); 611 if (strcmp(buf, cmp) != 0) { 612 result(llen, FAIL); 613 return 1; 614 } 615 if (expr != val) { 616 result(llen, FAIL); 617 return 1; 618 } 619 620 result(llen, OK); 621 return 0; 622 } 623 624 /* declare tests based on line numbers. There must be exactly one test per line. */ 625 #define CASE_TEST(name) \ 626 case __LINE__: llen += printf("%d %s", test, #name); 627 628 /* constructors validate that they are executed in definition order */ 629 __attribute__((constructor)) 630 static void constructor1(void) 631 { 632 constructor_test_value = 1; 633 } 634 635 __attribute__((constructor)) 636 static void constructor2(void) 637 { 638 constructor_test_value *= 2; 639 } 640 641 int run_startup(int min, int max) 642 { 643 int test; 644 int ret = 0; 645 /* kernel at least passes HOME and TERM, shell passes more */ 646 int env_total = 2; 647 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 648 extern char end; 649 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 650 /* differ from nolibc, both glibc and musl have no global _auxv */ 651 const unsigned long *test_auxv = (void *)-1; 652 #ifdef NOLIBC 653 test_auxv = _auxv; 654 #endif 655 656 for (test = min; test >= 0 && test <= max; test++) { 657 int llen = 0; /* line length */ 658 659 /* avoid leaving empty lines below, this will insert holes into 660 * test numbers. 661 */ 662 switch (test + __LINE__ + 1) { 663 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 664 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 665 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 666 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 667 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 668 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 669 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 670 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 671 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 672 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 673 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 674 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 675 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 676 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 677 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break; 678 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break; 679 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break; 680 case __LINE__: 681 return ret; /* must be last */ 682 /* note: do not set any defaults so as to permit holes above */ 683 } 684 } 685 return ret; 686 } 687 688 689 /* used by some syscall tests below */ 690 int test_getdents64(const char *dir) 691 { 692 char buffer[4096]; 693 int fd, ret; 694 int err; 695 696 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 697 if (ret < 0) 698 return ret; 699 700 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 701 err = errno; 702 close(fd); 703 704 errno = err; 705 return ret; 706 } 707 708 int test_getpagesize(void) 709 { 710 int x = getpagesize(); 711 int c; 712 713 if (x < 0) 714 return x; 715 716 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 717 /* 718 * x86 family is always 4K page. 719 */ 720 c = (x == 4096); 721 #elif defined(__aarch64__) 722 /* 723 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 724 * which are selected at kernel compilation time. 725 */ 726 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 727 #else 728 /* 729 * Assuming other architectures must have at least 4K page. 730 */ 731 c = (x >= 4096); 732 #endif 733 734 return !c; 735 } 736 737 int test_fork(void) 738 { 739 int status; 740 pid_t pid; 741 742 /* flush the printf buffer to avoid child flush it */ 743 fflush(stdout); 744 fflush(stderr); 745 746 pid = fork(); 747 748 switch (pid) { 749 case -1: 750 return 1; 751 752 case 0: 753 exit(123); 754 755 default: 756 pid = waitpid(pid, &status, 0); 757 758 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 759 } 760 } 761 762 int test_stat_timestamps(void) 763 { 764 struct stat st; 765 766 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 767 return 1; 768 769 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 770 return 1; 771 772 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 773 return 1; 774 775 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 776 return 1; 777 778 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 779 return 1; 780 781 return 0; 782 } 783 784 int test_uname(void) 785 { 786 struct utsname buf; 787 char osrelease[sizeof(buf.release)]; 788 ssize_t r; 789 int fd; 790 791 memset(&buf.domainname, 'P', sizeof(buf.domainname)); 792 793 if (uname(&buf)) 794 return 1; 795 796 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname))) 797 return 1; 798 799 fd = open("/proc/sys/kernel/osrelease", O_RDONLY); 800 if (fd == -1) 801 return 1; 802 803 r = read(fd, osrelease, sizeof(osrelease)); 804 if (r == -1) 805 return 1; 806 807 close(fd); 808 809 if (osrelease[r - 1] == '\n') 810 r--; 811 812 /* Validate one of the later fields to ensure field sizes are correct */ 813 if (strncmp(osrelease, buf.release, r)) 814 return 1; 815 816 /* Ensure the field domainname is set, it is missing from struct old_utsname */ 817 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname)) 818 return 1; 819 820 return 0; 821 } 822 823 int test_mmap_munmap(void) 824 { 825 int ret, fd, i, page_size; 826 void *mem; 827 size_t file_size, length; 828 off_t offset, pa_offset; 829 struct stat stat_buf; 830 const char * const files[] = { 831 "/dev/zero", 832 "/proc/1/exe", "/proc/self/exe", 833 argv0, 834 NULL 835 }; 836 837 page_size = getpagesize(); 838 if (page_size < 0) 839 return 1; 840 841 /* find a right file to mmap, existed and accessible */ 842 for (i = 0; files[i] != NULL; i++) { 843 ret = fd = open(files[i], O_RDONLY); 844 if (ret == -1) 845 continue; 846 else 847 break; 848 } 849 if (ret == -1) 850 return 1; 851 852 ret = stat(files[i], &stat_buf); 853 if (ret == -1) 854 goto end; 855 856 /* file size of the special /dev/zero is 0, let's assign one manually */ 857 if (i == 0) 858 file_size = 3*page_size; 859 else 860 file_size = stat_buf.st_size; 861 862 offset = file_size - 1; 863 if (offset < 0) 864 offset = 0; 865 length = file_size - offset; 866 pa_offset = offset & ~(page_size - 1); 867 868 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 869 if (mem == MAP_FAILED) { 870 ret = 1; 871 goto end; 872 } 873 874 ret = munmap(mem, length + offset - pa_offset); 875 876 end: 877 close(fd); 878 return !!ret; 879 } 880 881 int test_pipe(void) 882 { 883 const char *const msg = "hello, nolibc"; 884 int pipefd[2]; 885 char buf[32]; 886 size_t len; 887 888 if (pipe(pipefd) == -1) 889 return 1; 890 891 write(pipefd[1], msg, strlen(msg)); 892 close(pipefd[1]); 893 len = read(pipefd[0], buf, sizeof(buf)); 894 close(pipefd[0]); 895 896 if (len != strlen(msg)) 897 return 1; 898 899 return !!memcmp(buf, msg, len); 900 } 901 902 int test_rlimit(void) 903 { 904 struct rlimit rlim = { 905 .rlim_cur = 1 << 20, 906 .rlim_max = 1 << 21, 907 }; 908 int ret; 909 910 ret = setrlimit(RLIMIT_CORE, &rlim); 911 if (ret) 912 return -1; 913 914 rlim.rlim_cur = 0; 915 rlim.rlim_max = 0; 916 917 ret = getrlimit(RLIMIT_CORE, &rlim); 918 if (ret) 919 return -1; 920 921 if (rlim.rlim_cur != 1 << 20) 922 return -1; 923 if (rlim.rlim_max != 1 << 21) 924 return -1; 925 926 return 0; 927 } 928 929 930 /* Run syscall tests between IDs <min> and <max>. 931 * Return 0 on success, non-zero on failure. 932 */ 933 int run_syscall(int min, int max) 934 { 935 struct timeval tv; 936 struct timezone tz; 937 struct stat stat_buf; 938 int euid0; 939 int proc; 940 int test; 941 int tmp; 942 int ret = 0; 943 void *p1, *p2; 944 int has_gettid = 1; 945 946 /* <proc> indicates whether or not /proc is mounted */ 947 proc = stat("/proc", &stat_buf) == 0; 948 949 /* this will be used to skip certain tests that can't be run unprivileged */ 950 euid0 = geteuid() == 0; 951 952 /* from 2.30, glibc provides gettid() */ 953 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 954 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 955 #endif 956 957 for (test = min; test >= 0 && test <= max; test++) { 958 int llen = 0; /* line length */ 959 960 /* avoid leaving empty lines below, this will insert holes into 961 * test numbers. 962 */ 963 switch (test + __LINE__ + 1) { 964 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 965 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 966 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 967 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 968 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 969 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 970 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 971 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 972 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break; 973 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break; 974 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; 975 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 976 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 977 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 978 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 979 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 980 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 981 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 982 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 983 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 984 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 985 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 986 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 987 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 988 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 989 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 990 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 991 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 992 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 993 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 994 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 995 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 996 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 997 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 998 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 999 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 1000 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 1001 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 1002 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 1003 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 1004 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 1005 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 1006 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 1007 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 1008 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 1009 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 1010 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break; 1011 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break; 1012 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 1013 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 1014 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 1015 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 1016 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 1017 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 1018 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break; 1019 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 1020 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 1021 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 1022 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; 1023 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 1024 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 1025 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 1026 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 1027 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 1028 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break; 1029 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break; 1030 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 1031 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 1032 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 1033 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 1034 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 1035 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 1036 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 1037 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 1038 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 1039 case __LINE__: 1040 return ret; /* must be last */ 1041 /* note: do not set any defaults so as to permit holes above */ 1042 } 1043 } 1044 return ret; 1045 } 1046 1047 int run_stdlib(int min, int max) 1048 { 1049 int test; 1050 int ret = 0; 1051 1052 for (test = min; test >= 0 && test <= max; test++) { 1053 int llen = 0; /* line length */ 1054 1055 /* For functions that take a long buffer, like strlcat() 1056 * Add some more chars after the \0, to test functions that overwrite the buffer set 1057 * the \0 at the exact right position. 1058 */ 1059 char buf[10] = "test123456"; 1060 buf[4] = '\0'; 1061 1062 1063 /* avoid leaving empty lines below, this will insert holes into 1064 * test numbers. 1065 */ 1066 switch (test + __LINE__ + 1) { 1067 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 1068 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 1069 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 1070 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 1071 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 1072 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 1073 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 1074 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 1075 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 1076 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 1077 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 1078 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 1079 #ifdef NOLIBC 1080 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 0), buf, 3, "test"); break; 1081 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 1), buf, 4, "test"); break; 1082 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 5), buf, 7, "test"); break; 1083 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 6), buf, 7, "testb"); break; 1084 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 7), buf, 7, "testba"); break; 1085 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 8), buf, 7, "testbar"); break; 1086 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 0), buf, 3, "test"); break; 1087 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 1), buf, 3, ""); break; 1088 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 2), buf, 3, "b"); break; 1089 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 3), buf, 3, "ba"); break; 1090 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 4), buf, 3, "bar"); break; 1091 #endif 1092 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 1093 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 1094 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 1095 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 1096 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 1097 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 1098 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 1099 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 1100 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 1101 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 1102 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 1103 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 1104 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 1105 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 1106 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 1107 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 1108 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 1109 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 1110 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 1111 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 1112 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 1113 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 1114 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1115 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1116 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1117 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1118 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1119 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1120 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1121 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1122 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1123 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1124 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1125 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1126 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1127 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1128 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1129 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1130 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1131 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1132 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1133 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1134 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1135 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1136 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1137 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1138 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1139 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1140 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1141 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1142 1143 case __LINE__: 1144 return ret; /* must be last */ 1145 /* note: do not set any defaults so as to permit holes above */ 1146 } 1147 } 1148 return ret; 1149 } 1150 1151 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1152 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1153 1154 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1155 { 1156 int ret, fd; 1157 ssize_t w, r; 1158 char buf[100]; 1159 FILE *memfile; 1160 va_list args; 1161 1162 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600); 1163 if (fd == -1) { 1164 result(llen, SKIPPED); 1165 return 0; 1166 } 1167 1168 memfile = fdopen(fd, "w+"); 1169 if (!memfile) { 1170 result(llen, FAIL); 1171 return 1; 1172 } 1173 1174 va_start(args, fmt); 1175 w = vfprintf(memfile, fmt, args); 1176 va_end(args); 1177 1178 if (w != c) { 1179 llen += printf(" written(%d) != %d", (int)w, c); 1180 result(llen, FAIL); 1181 return 1; 1182 } 1183 1184 fflush(memfile); 1185 lseek(fd, 0, SEEK_SET); 1186 1187 r = read(fd, buf, sizeof(buf) - 1); 1188 1189 fclose(memfile); 1190 1191 if (r != w) { 1192 llen += printf(" written(%d) != read(%d)", (int)w, (int)r); 1193 result(llen, FAIL); 1194 return 1; 1195 } 1196 1197 buf[r] = '\0'; 1198 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1199 ret = strncmp(expected, buf, c); 1200 1201 result(llen, ret ? FAIL : OK); 1202 return ret; 1203 } 1204 1205 static int run_vfprintf(int min, int max) 1206 { 1207 int test; 1208 int ret = 0; 1209 1210 for (test = min; test >= 0 && test <= max; test++) { 1211 int llen = 0; /* line length */ 1212 1213 /* avoid leaving empty lines below, this will insert holes into 1214 * test numbers. 1215 */ 1216 switch (test + __LINE__ + 1) { 1217 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1218 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1219 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1220 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1221 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1222 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1223 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1224 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1225 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1226 case __LINE__: 1227 return ret; /* must be last */ 1228 /* note: do not set any defaults so as to permit holes above */ 1229 } 1230 } 1231 return ret; 1232 } 1233 1234 static int smash_stack(void) 1235 { 1236 char buf[100]; 1237 volatile char *ptr = buf; 1238 size_t i; 1239 1240 for (i = 0; i < 200; i++) 1241 ptr[i] = 'P'; 1242 1243 return 1; 1244 } 1245 1246 static int run_protection(int min __attribute__((unused)), 1247 int max __attribute__((unused))) 1248 { 1249 pid_t pid; 1250 int llen = 0, status; 1251 struct rlimit rlimit = { 0, 0 }; 1252 1253 llen += printf("0 -fstackprotector "); 1254 1255 #if !defined(_NOLIBC_STACKPROTECTOR) 1256 llen += printf("not supported"); 1257 result(llen, SKIPPED); 1258 return 0; 1259 #endif 1260 1261 #if defined(_NOLIBC_STACKPROTECTOR) 1262 if (!__stack_chk_guard) { 1263 llen += printf("__stack_chk_guard not initialized"); 1264 result(llen, FAIL); 1265 return 1; 1266 } 1267 #endif 1268 1269 pid = -1; 1270 pid = fork(); 1271 1272 switch (pid) { 1273 case -1: 1274 llen += printf("fork()"); 1275 result(llen, FAIL); 1276 return 1; 1277 1278 case 0: 1279 close(STDOUT_FILENO); 1280 close(STDERR_FILENO); 1281 1282 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1283 setrlimit(RLIMIT_CORE, &rlimit); 1284 smash_stack(); 1285 return 1; 1286 1287 default: 1288 pid = waitpid(pid, &status, 0); 1289 1290 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1291 llen += printf("waitpid()"); 1292 result(llen, FAIL); 1293 return 1; 1294 } 1295 result(llen, OK); 1296 return 0; 1297 } 1298 } 1299 1300 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1301 int prepare(void) 1302 { 1303 struct stat stat_buf; 1304 1305 /* It's possible that /dev doesn't even exist or was not mounted, so 1306 * we'll try to create it, mount it, or create minimal entries into it. 1307 * We want at least /dev/null and /dev/console. 1308 */ 1309 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1310 if (stat("/dev/console", &stat_buf) != 0 || 1311 stat("/dev/null", &stat_buf) != 0 || 1312 stat("/dev/zero", &stat_buf) != 0) { 1313 /* try devtmpfs first, otherwise fall back to manual creation */ 1314 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1315 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1316 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1317 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1318 } 1319 } 1320 } 1321 1322 /* If no /dev/console was found before calling init, stdio is closed so 1323 * we need to reopen it from /dev/console. If it failed above, it will 1324 * still fail here and we cannot emit a message anyway. 1325 */ 1326 if (close(dup(1)) == -1) { 1327 int fd = open("/dev/console", O_RDWR); 1328 1329 if (fd >= 0) { 1330 if (fd != 0) 1331 dup2(fd, 0); 1332 if (fd != 1) 1333 dup2(fd, 1); 1334 if (fd != 2) 1335 dup2(fd, 2); 1336 if (fd > 2) 1337 close(fd); 1338 puts("\nSuccessfully reopened /dev/console."); 1339 } 1340 } 1341 1342 /* try to mount /proc if not mounted. Silently fail otherwise */ 1343 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1344 if (stat("/proc/self", &stat_buf) != 0) { 1345 /* If not mountable, remove /proc completely to avoid misuse */ 1346 if (mount("none", "/proc", "proc", 0, 0) != 0) 1347 rmdir("/proc"); 1348 } 1349 } 1350 1351 /* some tests rely on a writable /tmp */ 1352 mkdir("/tmp", 0755); 1353 1354 return 0; 1355 } 1356 1357 /* This is the definition of known test names, with their functions */ 1358 static const struct test test_names[] = { 1359 /* add new tests here */ 1360 { .name = "startup", .func = run_startup }, 1361 { .name = "syscall", .func = run_syscall }, 1362 { .name = "stdlib", .func = run_stdlib }, 1363 { .name = "vfprintf", .func = run_vfprintf }, 1364 { .name = "protection", .func = run_protection }, 1365 { 0 } 1366 }; 1367 1368 static int is_setting_valid(char *test) 1369 { 1370 int idx, len, test_len, valid = 0; 1371 char delimiter; 1372 1373 if (!test) 1374 return valid; 1375 1376 test_len = strlen(test); 1377 1378 for (idx = 0; test_names[idx].name; idx++) { 1379 len = strlen(test_names[idx].name); 1380 if (test_len < len) 1381 continue; 1382 1383 if (strncmp(test, test_names[idx].name, len) != 0) 1384 continue; 1385 1386 delimiter = test[len]; 1387 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1388 continue; 1389 1390 valid = 1; 1391 break; 1392 } 1393 1394 return valid; 1395 } 1396 1397 int main(int argc, char **argv, char **envp) 1398 { 1399 int min = 0; 1400 int max = INT_MAX; 1401 int ret = 0; 1402 int err; 1403 int idx; 1404 char *test; 1405 1406 argv0 = argv[0]; 1407 test_argc = argc; 1408 test_argv = argv; 1409 test_envp = envp; 1410 1411 /* when called as init, it's possible that no console was opened, for 1412 * example if no /dev file system was provided. We'll check that fd#1 1413 * was opened, and if not we'll attempt to create and open /dev/console 1414 * and /dev/null that we'll use for later tests. 1415 */ 1416 if (getpid() == 1) 1417 prepare(); 1418 1419 /* the definition of a series of tests comes from either argv[1] or the 1420 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1421 * series of test names and optional ranges: 1422 * syscall:5-15[:.*],stdlib:8-10 1423 */ 1424 test = argv[1]; 1425 if (!is_setting_valid(test)) 1426 test = getenv("NOLIBC_TEST"); 1427 1428 if (is_setting_valid(test)) { 1429 char *comma, *colon, *dash, *value; 1430 1431 do { 1432 comma = strchr(test, ','); 1433 if (comma) 1434 *(comma++) = '\0'; 1435 1436 colon = strchr(test, ':'); 1437 if (colon) 1438 *(colon++) = '\0'; 1439 1440 for (idx = 0; test_names[idx].name; idx++) { 1441 if (strcmp(test, test_names[idx].name) == 0) 1442 break; 1443 } 1444 1445 if (test_names[idx].name) { 1446 /* The test was named, it will be called at least 1447 * once. We may have an optional range at <colon> 1448 * here, which defaults to the full range. 1449 */ 1450 do { 1451 min = 0; max = INT_MAX; 1452 value = colon; 1453 if (value && *value) { 1454 colon = strchr(value, ':'); 1455 if (colon) 1456 *(colon++) = '\0'; 1457 1458 dash = strchr(value, '-'); 1459 if (dash) 1460 *(dash++) = '\0'; 1461 1462 /* support :val: :min-max: :min-: :-max: */ 1463 if (*value) 1464 min = atoi(value); 1465 if (!dash) 1466 max = min; 1467 else if (*dash) 1468 max = atoi(dash); 1469 1470 value = colon; 1471 } 1472 1473 /* now's time to call the test */ 1474 printf("Running test '%s'\n", test_names[idx].name); 1475 err = test_names[idx].func(min, max); 1476 ret += err; 1477 printf("Errors during this test: %d\n\n", err); 1478 } while (colon && *colon); 1479 } else 1480 printf("Ignoring unknown test name '%s'\n", test); 1481 1482 test = comma; 1483 } while (test && *test); 1484 } else { 1485 /* no test mentioned, run everything */ 1486 for (idx = 0; test_names[idx].name; idx++) { 1487 printf("Running test '%s'\n", test_names[idx].name); 1488 err = test_names[idx].func(min, max); 1489 ret += err; 1490 printf("Errors during this test: %d\n\n", err); 1491 } 1492 } 1493 1494 printf("Total number of errors: %d\n", ret); 1495 1496 if (getpid() == 1) { 1497 /* we're running as init, there's no other process on the 1498 * system, thus likely started from a VM for a quick check. 1499 * Exiting will provoke a kernel panic that may be reported 1500 * as an error by Qemu or the hypervisor, while stopping 1501 * cleanly will often be reported as a success. This allows 1502 * to use the output of this program for bisecting kernels. 1503 */ 1504 printf("Leaving init with final status: %d\n", !!ret); 1505 if (ret == 0) 1506 reboot(RB_POWER_OFF); 1507 #if defined(__x86_64__) 1508 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1509 * exit with status code 2N+1 when N is written to 0x501. We 1510 * hard-code the syscall here as it's arch-dependent. 1511 */ 1512 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1513 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1514 /* if it does nothing, fall back to the regular panic */ 1515 #endif 1516 } 1517 1518 printf("Exiting with status %d\n", !!ret); 1519 return !!ret; 1520 } 1521