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/stat.h> 26 #include <sys/syscall.h> 27 #include <sys/sysmacros.h> 28 #include <sys/time.h> 29 #include <sys/wait.h> 30 #include <dirent.h> 31 #include <errno.h> 32 #include <fcntl.h> 33 #include <poll.h> 34 #include <sched.h> 35 #include <signal.h> 36 #include <stdarg.h> 37 #include <stddef.h> 38 #include <stdint.h> 39 #include <unistd.h> 40 #include <limits.h> 41 #endif 42 #endif 43 44 #include "nolibc-test-linkage.h" 45 46 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 47 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 48 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 49 50 /* will be used to test initialization of environ */ 51 static char **test_envp; 52 53 /* will be used to test initialization of argv */ 54 static char **test_argv; 55 56 /* will be used to test initialization of argc */ 57 static int test_argc; 58 59 /* will be used by some test cases as readable file, please don't write it */ 60 static const char *argv0; 61 62 /* will be used by constructor tests */ 63 static int constructor_test_value; 64 65 /* definition of a series of tests */ 66 struct test { 67 const char *name; /* test name */ 68 int (*func)(int min, int max); /* handler */ 69 }; 70 71 #ifndef _NOLIBC_STDLIB_H 72 char *itoa(int i) 73 { 74 static char buf[12]; 75 int ret; 76 77 ret = snprintf(buf, sizeof(buf), "%d", i); 78 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 79 } 80 #endif 81 82 #define CASE_ERR(err) \ 83 case err: return #err 84 85 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 86 * or the decimal value for less common ones. 87 */ 88 static const char *errorname(int err) 89 { 90 switch (err) { 91 case 0: return "SUCCESS"; 92 CASE_ERR(EPERM); 93 CASE_ERR(ENOENT); 94 CASE_ERR(ESRCH); 95 CASE_ERR(EINTR); 96 CASE_ERR(EIO); 97 CASE_ERR(ENXIO); 98 CASE_ERR(E2BIG); 99 CASE_ERR(ENOEXEC); 100 CASE_ERR(EBADF); 101 CASE_ERR(ECHILD); 102 CASE_ERR(EAGAIN); 103 CASE_ERR(ENOMEM); 104 CASE_ERR(EACCES); 105 CASE_ERR(EFAULT); 106 CASE_ERR(ENOTBLK); 107 CASE_ERR(EBUSY); 108 CASE_ERR(EEXIST); 109 CASE_ERR(EXDEV); 110 CASE_ERR(ENODEV); 111 CASE_ERR(ENOTDIR); 112 CASE_ERR(EISDIR); 113 CASE_ERR(EINVAL); 114 CASE_ERR(ENFILE); 115 CASE_ERR(EMFILE); 116 CASE_ERR(ENOTTY); 117 CASE_ERR(ETXTBSY); 118 CASE_ERR(EFBIG); 119 CASE_ERR(ENOSPC); 120 CASE_ERR(ESPIPE); 121 CASE_ERR(EROFS); 122 CASE_ERR(EMLINK); 123 CASE_ERR(EPIPE); 124 CASE_ERR(EDOM); 125 CASE_ERR(ERANGE); 126 CASE_ERR(ENOSYS); 127 CASE_ERR(EOVERFLOW); 128 default: 129 return itoa(err); 130 } 131 } 132 133 static void putcharn(char c, size_t n) 134 { 135 char buf[64]; 136 137 memset(buf, c, n); 138 buf[n] = '\0'; 139 fputs(buf, stdout); 140 } 141 142 enum RESULT { 143 OK, 144 FAIL, 145 SKIPPED, 146 }; 147 148 static void result(int llen, enum RESULT r) 149 { 150 const char *msg; 151 152 if (r == OK) 153 msg = " [OK]"; 154 else if (r == SKIPPED) 155 msg = "[SKIPPED]"; 156 else 157 msg = "[FAIL]"; 158 159 if (llen < 64) 160 putcharn(' ', 64 - llen); 161 puts(msg); 162 } 163 164 /* The tests below are intended to be used by the macroes, which evaluate 165 * expression <expr>, print the status to stdout, and update the "ret" 166 * variable to count failures. The functions themselves return the number 167 * of failures, thus either 0 or 1. 168 */ 169 170 #define EXPECT_ZR(cond, expr) \ 171 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 172 173 static __attribute__((unused)) 174 int expect_zr(int expr, int llen) 175 { 176 int ret = !(expr == 0); 177 178 llen += printf(" = %d ", expr); 179 result(llen, ret ? FAIL : OK); 180 return ret; 181 } 182 183 184 #define EXPECT_NZ(cond, expr, val) \ 185 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 186 187 static __attribute__((unused)) 188 int expect_nz(int expr, int llen) 189 { 190 int ret = !(expr != 0); 191 192 llen += printf(" = %d ", expr); 193 result(llen, ret ? FAIL : OK); 194 return ret; 195 } 196 197 198 #define EXPECT_EQ(cond, expr, val) \ 199 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 200 201 static __attribute__((unused)) 202 int expect_eq(uint64_t expr, int llen, uint64_t val) 203 { 204 int ret = !(expr == val); 205 206 llen += printf(" = %lld ", (long long)expr); 207 result(llen, ret ? FAIL : OK); 208 return ret; 209 } 210 211 212 #define EXPECT_NE(cond, expr, val) \ 213 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 214 215 static __attribute__((unused)) 216 int expect_ne(int expr, int llen, int val) 217 { 218 int ret = !(expr != val); 219 220 llen += printf(" = %d ", expr); 221 result(llen, ret ? FAIL : OK); 222 return ret; 223 } 224 225 226 #define EXPECT_GE(cond, expr, val) \ 227 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 228 229 static __attribute__((unused)) 230 int expect_ge(int expr, int llen, int val) 231 { 232 int ret = !(expr >= val); 233 234 llen += printf(" = %d ", expr); 235 result(llen, ret ? FAIL : OK); 236 return ret; 237 } 238 239 240 #define EXPECT_GT(cond, expr, val) \ 241 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 242 243 static __attribute__((unused)) 244 int expect_gt(int expr, int llen, int val) 245 { 246 int ret = !(expr > val); 247 248 llen += printf(" = %d ", expr); 249 result(llen, ret ? FAIL : OK); 250 return ret; 251 } 252 253 254 #define EXPECT_LE(cond, expr, val) \ 255 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 256 257 static __attribute__((unused)) 258 int expect_le(int expr, int llen, int val) 259 { 260 int ret = !(expr <= val); 261 262 llen += printf(" = %d ", expr); 263 result(llen, ret ? FAIL : OK); 264 return ret; 265 } 266 267 268 #define EXPECT_LT(cond, expr, val) \ 269 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 270 271 static __attribute__((unused)) 272 int expect_lt(int expr, int llen, int val) 273 { 274 int ret = !(expr < val); 275 276 llen += printf(" = %d ", expr); 277 result(llen, ret ? FAIL : OK); 278 return ret; 279 } 280 281 282 #define EXPECT_SYSZR(cond, expr) \ 283 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 284 285 static __attribute__((unused)) 286 int expect_syszr(int expr, int llen) 287 { 288 int ret = 0; 289 290 if (expr) { 291 ret = 1; 292 llen += printf(" = %d %s ", expr, errorname(errno)); 293 result(llen, FAIL); 294 } else { 295 llen += printf(" = %d ", expr); 296 result(llen, OK); 297 } 298 return ret; 299 } 300 301 302 #define EXPECT_SYSEQ(cond, expr, val) \ 303 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 304 305 static __attribute__((unused)) 306 int expect_syseq(int expr, int llen, int val) 307 { 308 int ret = 0; 309 310 if (expr != val) { 311 ret = 1; 312 llen += printf(" = %d %s ", expr, errorname(errno)); 313 result(llen, FAIL); 314 } else { 315 llen += printf(" = %d ", expr); 316 result(llen, OK); 317 } 318 return ret; 319 } 320 321 322 #define EXPECT_SYSNE(cond, expr, val) \ 323 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 324 325 static __attribute__((unused)) 326 int expect_sysne(int expr, int llen, int val) 327 { 328 int ret = 0; 329 330 if (expr == val) { 331 ret = 1; 332 llen += printf(" = %d %s ", expr, errorname(errno)); 333 result(llen, FAIL); 334 } else { 335 llen += printf(" = %d ", expr); 336 result(llen, OK); 337 } 338 return ret; 339 } 340 341 342 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 343 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 344 345 #define EXPECT_SYSER(cond, expr, expret, experr) \ 346 EXPECT_SYSER2(cond, expr, expret, experr, 0) 347 348 static __attribute__((unused)) 349 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 350 { 351 int ret = 0; 352 int _errno = errno; 353 354 llen += printf(" = %d %s ", expr, errorname(_errno)); 355 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 356 ret = 1; 357 if (experr2 == 0) 358 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 359 else 360 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 361 result(llen, FAIL); 362 } else { 363 result(llen, OK); 364 } 365 return ret; 366 } 367 368 369 #define EXPECT_PTRZR(cond, expr) \ 370 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 371 372 static __attribute__((unused)) 373 int expect_ptrzr(const void *expr, int llen) 374 { 375 int ret = 0; 376 377 llen += printf(" = <%p> ", expr); 378 if (expr) { 379 ret = 1; 380 result(llen, FAIL); 381 } else { 382 result(llen, OK); 383 } 384 return ret; 385 } 386 387 388 #define EXPECT_PTRNZ(cond, expr) \ 389 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 390 391 static __attribute__((unused)) 392 int expect_ptrnz(const void *expr, int llen) 393 { 394 int ret = 0; 395 396 llen += printf(" = <%p> ", expr); 397 if (!expr) { 398 ret = 1; 399 result(llen, FAIL); 400 } else { 401 result(llen, OK); 402 } 403 return ret; 404 } 405 406 #define EXPECT_PTREQ(cond, expr, cmp) \ 407 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 408 409 static __attribute__((unused)) 410 int expect_ptreq(const void *expr, int llen, const void *cmp) 411 { 412 int ret = 0; 413 414 llen += printf(" = <%p> ", expr); 415 if (expr != cmp) { 416 ret = 1; 417 result(llen, FAIL); 418 } else { 419 result(llen, OK); 420 } 421 return ret; 422 } 423 424 #define EXPECT_PTRNE(cond, expr, cmp) \ 425 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 426 427 static __attribute__((unused)) 428 int expect_ptrne(const void *expr, int llen, const void *cmp) 429 { 430 int ret = 0; 431 432 llen += printf(" = <%p> ", expr); 433 if (expr == cmp) { 434 ret = 1; 435 result(llen, FAIL); 436 } else { 437 result(llen, OK); 438 } 439 return ret; 440 } 441 442 #define EXPECT_PTRGE(cond, expr, cmp) \ 443 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 444 445 static __attribute__((unused)) 446 int expect_ptrge(const void *expr, int llen, const void *cmp) 447 { 448 int ret = !(expr >= cmp); 449 450 llen += printf(" = <%p> ", expr); 451 result(llen, ret ? FAIL : OK); 452 return ret; 453 } 454 455 #define EXPECT_PTRGT(cond, expr, cmp) \ 456 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 457 458 static __attribute__((unused)) 459 int expect_ptrgt(const void *expr, int llen, const void *cmp) 460 { 461 int ret = !(expr > cmp); 462 463 llen += printf(" = <%p> ", expr); 464 result(llen, ret ? FAIL : OK); 465 return ret; 466 } 467 468 469 #define EXPECT_PTRLE(cond, expr, cmp) \ 470 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 471 472 static __attribute__((unused)) 473 int expect_ptrle(const void *expr, int llen, const void *cmp) 474 { 475 int ret = !(expr <= cmp); 476 477 llen += printf(" = <%p> ", expr); 478 result(llen, ret ? FAIL : OK); 479 return ret; 480 } 481 482 483 #define EXPECT_PTRLT(cond, expr, cmp) \ 484 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 485 486 static __attribute__((unused)) 487 int expect_ptrlt(const void *expr, int llen, const void *cmp) 488 { 489 int ret = !(expr < cmp); 490 491 llen += printf(" = <%p> ", expr); 492 result(llen, ret ? FAIL : OK); 493 return ret; 494 } 495 496 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 497 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 498 499 #define EXPECT_PTRER(cond, expr, expret, experr) \ 500 EXPECT_PTRER2(cond, expr, expret, experr, 0) 501 502 static __attribute__((unused)) 503 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 504 { 505 int ret = 0; 506 int _errno = errno; 507 508 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 509 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 510 ret = 1; 511 if (experr2 == 0) 512 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 513 else 514 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 515 result(llen, FAIL); 516 } else { 517 result(llen, OK); 518 } 519 return ret; 520 } 521 522 #define EXPECT_STRZR(cond, expr) \ 523 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 524 525 static __attribute__((unused)) 526 int expect_strzr(const char *expr, int llen) 527 { 528 int ret = 0; 529 530 llen += printf(" = <%s> ", expr); 531 if (expr) { 532 ret = 1; 533 result(llen, FAIL); 534 } else { 535 result(llen, OK); 536 } 537 return ret; 538 } 539 540 541 #define EXPECT_STRNZ(cond, expr) \ 542 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 543 544 static __attribute__((unused)) 545 int expect_strnz(const char *expr, int llen) 546 { 547 int ret = 0; 548 549 llen += printf(" = <%s> ", expr); 550 if (!expr) { 551 ret = 1; 552 result(llen, FAIL); 553 } else { 554 result(llen, OK); 555 } 556 return ret; 557 } 558 559 560 #define EXPECT_STREQ(cond, expr, cmp) \ 561 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 562 563 static __attribute__((unused)) 564 int expect_streq(const char *expr, int llen, const char *cmp) 565 { 566 int ret = 0; 567 568 llen += printf(" = <%s> ", expr); 569 if (strcmp(expr, cmp) != 0) { 570 ret = 1; 571 result(llen, FAIL); 572 } else { 573 result(llen, OK); 574 } 575 return ret; 576 } 577 578 579 #define EXPECT_STRNE(cond, expr, cmp) \ 580 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 581 582 static __attribute__((unused)) 583 int expect_strne(const char *expr, int llen, const char *cmp) 584 { 585 int ret = 0; 586 587 llen += printf(" = <%s> ", expr); 588 if (strcmp(expr, cmp) == 0) { 589 ret = 1; 590 result(llen, FAIL); 591 } else { 592 result(llen, OK); 593 } 594 return ret; 595 } 596 597 598 /* declare tests based on line numbers. There must be exactly one test per line. */ 599 #define CASE_TEST(name) \ 600 case __LINE__: llen += printf("%d %s", test, #name); 601 602 /* constructors validate that they are executed in definition order */ 603 __attribute__((constructor)) 604 static void constructor1(void) 605 { 606 constructor_test_value = 1; 607 } 608 609 __attribute__((constructor)) 610 static void constructor2(void) 611 { 612 constructor_test_value *= 2; 613 } 614 615 int run_startup(int min, int max) 616 { 617 int test; 618 int ret = 0; 619 /* kernel at least passes HOME and TERM, shell passes more */ 620 int env_total = 2; 621 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 622 extern char end; 623 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 624 /* differ from nolibc, both glibc and musl have no global _auxv */ 625 const unsigned long *test_auxv = (void *)-1; 626 #ifdef NOLIBC 627 test_auxv = _auxv; 628 #endif 629 630 for (test = min; test >= 0 && test <= max; test++) { 631 int llen = 0; /* line length */ 632 633 /* avoid leaving empty lines below, this will insert holes into 634 * test numbers. 635 */ 636 switch (test + __LINE__ + 1) { 637 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 638 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 639 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 640 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 641 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 642 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 643 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 644 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 645 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 646 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 647 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 648 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 649 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 650 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 651 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break; 652 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break; 653 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break; 654 case __LINE__: 655 return ret; /* must be last */ 656 /* note: do not set any defaults so as to permit holes above */ 657 } 658 } 659 return ret; 660 } 661 662 663 /* used by some syscall tests below */ 664 int test_getdents64(const char *dir) 665 { 666 char buffer[4096]; 667 int fd, ret; 668 int err; 669 670 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 671 if (ret < 0) 672 return ret; 673 674 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 675 err = errno; 676 close(fd); 677 678 errno = err; 679 return ret; 680 } 681 682 int test_getpagesize(void) 683 { 684 int x = getpagesize(); 685 int c; 686 687 if (x < 0) 688 return x; 689 690 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 691 /* 692 * x86 family is always 4K page. 693 */ 694 c = (x == 4096); 695 #elif defined(__aarch64__) 696 /* 697 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 698 * which are selected at kernel compilation time. 699 */ 700 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 701 #else 702 /* 703 * Assuming other architectures must have at least 4K page. 704 */ 705 c = (x >= 4096); 706 #endif 707 708 return !c; 709 } 710 711 int test_fork(void) 712 { 713 int status; 714 pid_t pid; 715 716 /* flush the printf buffer to avoid child flush it */ 717 fflush(stdout); 718 fflush(stderr); 719 720 pid = fork(); 721 722 switch (pid) { 723 case -1: 724 return 1; 725 726 case 0: 727 exit(123); 728 729 default: 730 pid = waitpid(pid, &status, 0); 731 732 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 733 } 734 } 735 736 int test_stat_timestamps(void) 737 { 738 struct stat st; 739 740 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 741 return 1; 742 743 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 744 return 1; 745 746 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 747 return 1; 748 749 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 750 return 1; 751 752 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 753 return 1; 754 755 return 0; 756 } 757 758 int test_mmap_munmap(void) 759 { 760 int ret, fd, i, page_size; 761 void *mem; 762 size_t file_size, length; 763 off_t offset, pa_offset; 764 struct stat stat_buf; 765 const char * const files[] = { 766 "/dev/zero", 767 "/proc/1/exe", "/proc/self/exe", 768 argv0, 769 NULL 770 }; 771 772 page_size = getpagesize(); 773 if (page_size < 0) 774 return 1; 775 776 /* find a right file to mmap, existed and accessible */ 777 for (i = 0; files[i] != NULL; i++) { 778 ret = fd = open(files[i], O_RDONLY); 779 if (ret == -1) 780 continue; 781 else 782 break; 783 } 784 if (ret == -1) 785 return 1; 786 787 ret = stat(files[i], &stat_buf); 788 if (ret == -1) 789 goto end; 790 791 /* file size of the special /dev/zero is 0, let's assign one manually */ 792 if (i == 0) 793 file_size = 3*page_size; 794 else 795 file_size = stat_buf.st_size; 796 797 offset = file_size - 1; 798 if (offset < 0) 799 offset = 0; 800 length = file_size - offset; 801 pa_offset = offset & ~(page_size - 1); 802 803 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 804 if (mem == MAP_FAILED) { 805 ret = 1; 806 goto end; 807 } 808 809 ret = munmap(mem, length + offset - pa_offset); 810 811 end: 812 close(fd); 813 return !!ret; 814 } 815 816 int test_pipe(void) 817 { 818 const char *const msg = "hello, nolibc"; 819 int pipefd[2]; 820 char buf[32]; 821 size_t len; 822 823 if (pipe(pipefd) == -1) 824 return 1; 825 826 write(pipefd[1], msg, strlen(msg)); 827 close(pipefd[1]); 828 len = read(pipefd[0], buf, sizeof(buf)); 829 close(pipefd[0]); 830 831 if (len != strlen(msg)) 832 return 1; 833 834 return !!memcmp(buf, msg, len); 835 } 836 837 838 /* Run syscall tests between IDs <min> and <max>. 839 * Return 0 on success, non-zero on failure. 840 */ 841 int run_syscall(int min, int max) 842 { 843 struct timeval tv; 844 struct timezone tz; 845 struct stat stat_buf; 846 int euid0; 847 int proc; 848 int test; 849 int tmp; 850 int ret = 0; 851 void *p1, *p2; 852 int has_gettid = 1; 853 854 /* <proc> indicates whether or not /proc is mounted */ 855 proc = stat("/proc", &stat_buf) == 0; 856 857 /* this will be used to skip certain tests that can't be run unprivileged */ 858 euid0 = geteuid() == 0; 859 860 /* from 2.30, glibc provides gettid() */ 861 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 862 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 863 #endif 864 865 for (test = min; test >= 0 && test <= max; test++) { 866 int llen = 0; /* line length */ 867 868 /* avoid leaving empty lines below, this will insert holes into 869 * test numbers. 870 */ 871 switch (test + __LINE__ + 1) { 872 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 873 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 874 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 875 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 876 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 877 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 878 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 879 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 880 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break; 881 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break; 882 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; 883 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 884 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 885 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 886 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 887 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 888 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 889 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 890 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 891 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 892 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 893 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 894 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 895 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 896 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 897 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 898 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 899 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 900 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 901 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 902 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 903 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 904 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 905 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 906 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 907 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 908 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 909 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 910 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 911 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 912 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 913 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 914 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 915 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 916 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 917 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 918 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 919 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break; 920 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break; 921 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 922 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 923 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 924 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 925 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 926 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 927 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 928 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 929 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 930 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; 931 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 932 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 933 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 934 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 935 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 936 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 937 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 938 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 939 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 940 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 941 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 942 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 943 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 944 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 945 case __LINE__: 946 return ret; /* must be last */ 947 /* note: do not set any defaults so as to permit holes above */ 948 } 949 } 950 return ret; 951 } 952 953 int run_stdlib(int min, int max) 954 { 955 int test; 956 int ret = 0; 957 958 for (test = min; test >= 0 && test <= max; test++) { 959 int llen = 0; /* line length */ 960 961 /* avoid leaving empty lines below, this will insert holes into 962 * test numbers. 963 */ 964 switch (test + __LINE__ + 1) { 965 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 966 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 967 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 968 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 969 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 970 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 971 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 972 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 973 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 974 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 975 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 976 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 977 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 978 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 979 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 980 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 981 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 982 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 983 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 984 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 985 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 986 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 987 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 988 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 989 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 990 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 991 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 992 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 993 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 994 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 995 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 996 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 997 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 998 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 999 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1000 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1001 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1002 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1003 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1004 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1005 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1006 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1007 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1008 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1009 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1010 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1011 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1012 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1013 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1014 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1015 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1016 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1017 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1018 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1019 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1020 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1021 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1022 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1023 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1024 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1025 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1026 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1027 1028 case __LINE__: 1029 return ret; /* must be last */ 1030 /* note: do not set any defaults so as to permit holes above */ 1031 } 1032 } 1033 return ret; 1034 } 1035 1036 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1037 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1038 1039 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1040 { 1041 int ret, fd; 1042 ssize_t w, r; 1043 char buf[100]; 1044 FILE *memfile; 1045 va_list args; 1046 1047 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600); 1048 if (fd == -1) { 1049 result(llen, SKIPPED); 1050 return 0; 1051 } 1052 1053 memfile = fdopen(fd, "w+"); 1054 if (!memfile) { 1055 result(llen, FAIL); 1056 return 1; 1057 } 1058 1059 va_start(args, fmt); 1060 w = vfprintf(memfile, fmt, args); 1061 va_end(args); 1062 1063 if (w != c) { 1064 llen += printf(" written(%d) != %d", (int)w, c); 1065 result(llen, FAIL); 1066 return 1; 1067 } 1068 1069 fflush(memfile); 1070 lseek(fd, 0, SEEK_SET); 1071 1072 r = read(fd, buf, sizeof(buf) - 1); 1073 1074 fclose(memfile); 1075 1076 if (r != w) { 1077 llen += printf(" written(%d) != read(%d)", (int)w, (int)r); 1078 result(llen, FAIL); 1079 return 1; 1080 } 1081 1082 buf[r] = '\0'; 1083 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1084 ret = strncmp(expected, buf, c); 1085 1086 result(llen, ret ? FAIL : OK); 1087 return ret; 1088 } 1089 1090 static int run_vfprintf(int min, int max) 1091 { 1092 int test; 1093 int ret = 0; 1094 1095 for (test = min; test >= 0 && test <= max; test++) { 1096 int llen = 0; /* line length */ 1097 1098 /* avoid leaving empty lines below, this will insert holes into 1099 * test numbers. 1100 */ 1101 switch (test + __LINE__ + 1) { 1102 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1103 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1104 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1105 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1106 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1107 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1108 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1109 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1110 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1111 case __LINE__: 1112 return ret; /* must be last */ 1113 /* note: do not set any defaults so as to permit holes above */ 1114 } 1115 } 1116 return ret; 1117 } 1118 1119 static int smash_stack(void) 1120 { 1121 char buf[100]; 1122 volatile char *ptr = buf; 1123 size_t i; 1124 1125 for (i = 0; i < 200; i++) 1126 ptr[i] = 'P'; 1127 1128 return 1; 1129 } 1130 1131 static int run_protection(int min __attribute__((unused)), 1132 int max __attribute__((unused))) 1133 { 1134 pid_t pid; 1135 int llen = 0, status; 1136 1137 llen += printf("0 -fstackprotector "); 1138 1139 #if !defined(_NOLIBC_STACKPROTECTOR) 1140 llen += printf("not supported"); 1141 result(llen, SKIPPED); 1142 return 0; 1143 #endif 1144 1145 #if defined(_NOLIBC_STACKPROTECTOR) 1146 if (!__stack_chk_guard) { 1147 llen += printf("__stack_chk_guard not initialized"); 1148 result(llen, FAIL); 1149 return 1; 1150 } 1151 #endif 1152 1153 pid = -1; 1154 pid = fork(); 1155 1156 switch (pid) { 1157 case -1: 1158 llen += printf("fork()"); 1159 result(llen, FAIL); 1160 return 1; 1161 1162 case 0: 1163 close(STDOUT_FILENO); 1164 close(STDERR_FILENO); 1165 1166 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1167 smash_stack(); 1168 return 1; 1169 1170 default: 1171 pid = waitpid(pid, &status, 0); 1172 1173 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1174 llen += printf("waitpid()"); 1175 result(llen, FAIL); 1176 return 1; 1177 } 1178 result(llen, OK); 1179 return 0; 1180 } 1181 } 1182 1183 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1184 int prepare(void) 1185 { 1186 struct stat stat_buf; 1187 1188 /* It's possible that /dev doesn't even exist or was not mounted, so 1189 * we'll try to create it, mount it, or create minimal entries into it. 1190 * We want at least /dev/null and /dev/console. 1191 */ 1192 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1193 if (stat("/dev/console", &stat_buf) != 0 || 1194 stat("/dev/null", &stat_buf) != 0 || 1195 stat("/dev/zero", &stat_buf) != 0) { 1196 /* try devtmpfs first, otherwise fall back to manual creation */ 1197 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1198 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1199 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1200 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1201 } 1202 } 1203 } 1204 1205 /* If no /dev/console was found before calling init, stdio is closed so 1206 * we need to reopen it from /dev/console. If it failed above, it will 1207 * still fail here and we cannot emit a message anyway. 1208 */ 1209 if (close(dup(1)) == -1) { 1210 int fd = open("/dev/console", O_RDWR); 1211 1212 if (fd >= 0) { 1213 if (fd != 0) 1214 dup2(fd, 0); 1215 if (fd != 1) 1216 dup2(fd, 1); 1217 if (fd != 2) 1218 dup2(fd, 2); 1219 if (fd > 2) 1220 close(fd); 1221 puts("\nSuccessfully reopened /dev/console."); 1222 } 1223 } 1224 1225 /* try to mount /proc if not mounted. Silently fail otherwise */ 1226 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1227 if (stat("/proc/self", &stat_buf) != 0) { 1228 /* If not mountable, remove /proc completely to avoid misuse */ 1229 if (mount("none", "/proc", "proc", 0, 0) != 0) 1230 rmdir("/proc"); 1231 } 1232 } 1233 1234 /* some tests rely on a writable /tmp */ 1235 mkdir("/tmp", 0755); 1236 1237 return 0; 1238 } 1239 1240 /* This is the definition of known test names, with their functions */ 1241 static const struct test test_names[] = { 1242 /* add new tests here */ 1243 { .name = "startup", .func = run_startup }, 1244 { .name = "syscall", .func = run_syscall }, 1245 { .name = "stdlib", .func = run_stdlib }, 1246 { .name = "vfprintf", .func = run_vfprintf }, 1247 { .name = "protection", .func = run_protection }, 1248 { 0 } 1249 }; 1250 1251 static int is_setting_valid(char *test) 1252 { 1253 int idx, len, test_len, valid = 0; 1254 char delimiter; 1255 1256 if (!test) 1257 return valid; 1258 1259 test_len = strlen(test); 1260 1261 for (idx = 0; test_names[idx].name; idx++) { 1262 len = strlen(test_names[idx].name); 1263 if (test_len < len) 1264 continue; 1265 1266 if (strncmp(test, test_names[idx].name, len) != 0) 1267 continue; 1268 1269 delimiter = test[len]; 1270 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1271 continue; 1272 1273 valid = 1; 1274 break; 1275 } 1276 1277 return valid; 1278 } 1279 1280 int main(int argc, char **argv, char **envp) 1281 { 1282 int min = 0; 1283 int max = INT_MAX; 1284 int ret = 0; 1285 int err; 1286 int idx; 1287 char *test; 1288 1289 argv0 = argv[0]; 1290 test_argc = argc; 1291 test_argv = argv; 1292 test_envp = envp; 1293 1294 /* when called as init, it's possible that no console was opened, for 1295 * example if no /dev file system was provided. We'll check that fd#1 1296 * was opened, and if not we'll attempt to create and open /dev/console 1297 * and /dev/null that we'll use for later tests. 1298 */ 1299 if (getpid() == 1) 1300 prepare(); 1301 1302 /* the definition of a series of tests comes from either argv[1] or the 1303 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1304 * series of test names and optional ranges: 1305 * syscall:5-15[:.*],stdlib:8-10 1306 */ 1307 test = argv[1]; 1308 if (!is_setting_valid(test)) 1309 test = getenv("NOLIBC_TEST"); 1310 1311 if (is_setting_valid(test)) { 1312 char *comma, *colon, *dash, *value; 1313 1314 do { 1315 comma = strchr(test, ','); 1316 if (comma) 1317 *(comma++) = '\0'; 1318 1319 colon = strchr(test, ':'); 1320 if (colon) 1321 *(colon++) = '\0'; 1322 1323 for (idx = 0; test_names[idx].name; idx++) { 1324 if (strcmp(test, test_names[idx].name) == 0) 1325 break; 1326 } 1327 1328 if (test_names[idx].name) { 1329 /* The test was named, it will be called at least 1330 * once. We may have an optional range at <colon> 1331 * here, which defaults to the full range. 1332 */ 1333 do { 1334 min = 0; max = INT_MAX; 1335 value = colon; 1336 if (value && *value) { 1337 colon = strchr(value, ':'); 1338 if (colon) 1339 *(colon++) = '\0'; 1340 1341 dash = strchr(value, '-'); 1342 if (dash) 1343 *(dash++) = '\0'; 1344 1345 /* support :val: :min-max: :min-: :-max: */ 1346 if (*value) 1347 min = atoi(value); 1348 if (!dash) 1349 max = min; 1350 else if (*dash) 1351 max = atoi(dash); 1352 1353 value = colon; 1354 } 1355 1356 /* now's time to call the test */ 1357 printf("Running test '%s'\n", test_names[idx].name); 1358 err = test_names[idx].func(min, max); 1359 ret += err; 1360 printf("Errors during this test: %d\n\n", err); 1361 } while (colon && *colon); 1362 } else 1363 printf("Ignoring unknown test name '%s'\n", test); 1364 1365 test = comma; 1366 } while (test && *test); 1367 } else { 1368 /* no test mentioned, run everything */ 1369 for (idx = 0; test_names[idx].name; idx++) { 1370 printf("Running test '%s'\n", test_names[idx].name); 1371 err = test_names[idx].func(min, max); 1372 ret += err; 1373 printf("Errors during this test: %d\n\n", err); 1374 } 1375 } 1376 1377 printf("Total number of errors: %d\n", ret); 1378 1379 if (getpid() == 1) { 1380 /* we're running as init, there's no other process on the 1381 * system, thus likely started from a VM for a quick check. 1382 * Exiting will provoke a kernel panic that may be reported 1383 * as an error by Qemu or the hypervisor, while stopping 1384 * cleanly will often be reported as a success. This allows 1385 * to use the output of this program for bisecting kernels. 1386 */ 1387 printf("Leaving init with final status: %d\n", !!ret); 1388 if (ret == 0) 1389 reboot(RB_POWER_OFF); 1390 #if defined(__x86_64__) 1391 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1392 * exit with status code 2N+1 when N is written to 0x501. We 1393 * hard-code the syscall here as it's arch-dependent. 1394 */ 1395 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1396 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1397 /* if it does nothing, fall back to the regular panic */ 1398 #endif 1399 } 1400 1401 printf("Exiting with status %d\n", !!ret); 1402 return !!ret; 1403 } 1404