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/io.h> 19 #include <sys/ioctl.h> 20 #include <sys/mman.h> 21 #include <sys/mount.h> 22 #include <sys/prctl.h> 23 #include <sys/reboot.h> 24 #include <sys/stat.h> 25 #include <sys/syscall.h> 26 #include <sys/sysmacros.h> 27 #include <sys/time.h> 28 #include <sys/wait.h> 29 #include <dirent.h> 30 #include <errno.h> 31 #include <fcntl.h> 32 #include <poll.h> 33 #include <sched.h> 34 #include <signal.h> 35 #include <stdarg.h> 36 #include <stddef.h> 37 #include <stdint.h> 38 #include <unistd.h> 39 #include <limits.h> 40 #endif 41 #endif 42 43 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 44 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 45 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 46 47 /* will be used to test initialization of environ */ 48 static char **test_envp; 49 50 /* will be used by some test cases as readable file, please don't write it */ 51 static const char *argv0; 52 53 /* definition of a series of tests */ 54 struct test { 55 const char *name; /* test name */ 56 int (*func)(int min, int max); /* handler */ 57 }; 58 59 #ifndef _NOLIBC_STDLIB_H 60 char *itoa(int i) 61 { 62 static char buf[12]; 63 int ret; 64 65 ret = snprintf(buf, sizeof(buf), "%d", i); 66 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 67 } 68 #endif 69 70 #define CASE_ERR(err) \ 71 case err: return #err 72 73 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 74 * or the decimal value for less common ones. 75 */ 76 const char *errorname(int err) 77 { 78 switch (err) { 79 case 0: return "SUCCESS"; 80 CASE_ERR(EPERM); 81 CASE_ERR(ENOENT); 82 CASE_ERR(ESRCH); 83 CASE_ERR(EINTR); 84 CASE_ERR(EIO); 85 CASE_ERR(ENXIO); 86 CASE_ERR(E2BIG); 87 CASE_ERR(ENOEXEC); 88 CASE_ERR(EBADF); 89 CASE_ERR(ECHILD); 90 CASE_ERR(EAGAIN); 91 CASE_ERR(ENOMEM); 92 CASE_ERR(EACCES); 93 CASE_ERR(EFAULT); 94 CASE_ERR(ENOTBLK); 95 CASE_ERR(EBUSY); 96 CASE_ERR(EEXIST); 97 CASE_ERR(EXDEV); 98 CASE_ERR(ENODEV); 99 CASE_ERR(ENOTDIR); 100 CASE_ERR(EISDIR); 101 CASE_ERR(EINVAL); 102 CASE_ERR(ENFILE); 103 CASE_ERR(EMFILE); 104 CASE_ERR(ENOTTY); 105 CASE_ERR(ETXTBSY); 106 CASE_ERR(EFBIG); 107 CASE_ERR(ENOSPC); 108 CASE_ERR(ESPIPE); 109 CASE_ERR(EROFS); 110 CASE_ERR(EMLINK); 111 CASE_ERR(EPIPE); 112 CASE_ERR(EDOM); 113 CASE_ERR(ERANGE); 114 CASE_ERR(ENOSYS); 115 CASE_ERR(EOVERFLOW); 116 default: 117 return itoa(err); 118 } 119 } 120 121 static void putcharn(char c, size_t n) 122 { 123 char buf[64]; 124 125 memset(buf, c, n); 126 buf[n] = '\0'; 127 fputs(buf, stdout); 128 } 129 130 enum RESULT { 131 OK, 132 FAIL, 133 SKIPPED, 134 }; 135 136 static void result(int llen, enum RESULT r) 137 { 138 const char *msg; 139 140 if (r == OK) 141 msg = " [OK]"; 142 else if (r == SKIPPED) 143 msg = "[SKIPPED]"; 144 else 145 msg = "[FAIL]"; 146 147 putcharn(' ', 64 - llen); 148 puts(msg); 149 } 150 151 /* The tests below are intended to be used by the macroes, which evaluate 152 * expression <expr>, print the status to stdout, and update the "ret" 153 * variable to count failures. The functions themselves return the number 154 * of failures, thus either 0 or 1. 155 */ 156 157 #define EXPECT_ZR(cond, expr) \ 158 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 159 160 static int expect_zr(int expr, int llen) 161 { 162 int ret = !(expr == 0); 163 164 llen += printf(" = %d ", expr); 165 result(llen, ret ? FAIL : OK); 166 return ret; 167 } 168 169 170 #define EXPECT_NZ(cond, expr, val) \ 171 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 172 173 static int expect_nz(int expr, int llen) 174 { 175 int ret = !(expr != 0); 176 177 llen += printf(" = %d ", expr); 178 result(llen, ret ? FAIL : OK); 179 return ret; 180 } 181 182 183 #define EXPECT_EQ(cond, expr, val) \ 184 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 185 186 static int expect_eq(uint64_t expr, int llen, uint64_t val) 187 { 188 int ret = !(expr == val); 189 190 llen += printf(" = %lld ", (long long)expr); 191 result(llen, ret ? FAIL : OK); 192 return ret; 193 } 194 195 196 #define EXPECT_NE(cond, expr, val) \ 197 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 198 199 static int expect_ne(int expr, int llen, int val) 200 { 201 int ret = !(expr != val); 202 203 llen += printf(" = %d ", expr); 204 result(llen, ret ? FAIL : OK); 205 return ret; 206 } 207 208 209 #define EXPECT_GE(cond, expr, val) \ 210 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 211 212 static int expect_ge(int expr, int llen, int val) 213 { 214 int ret = !(expr >= val); 215 216 llen += printf(" = %d ", expr); 217 result(llen, ret ? FAIL : OK); 218 return ret; 219 } 220 221 222 #define EXPECT_GT(cond, expr, val) \ 223 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 224 225 static int expect_gt(int expr, int llen, int val) 226 { 227 int ret = !(expr > val); 228 229 llen += printf(" = %d ", expr); 230 result(llen, ret ? FAIL : OK); 231 return ret; 232 } 233 234 235 #define EXPECT_LE(cond, expr, val) \ 236 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 237 238 static int expect_le(int expr, int llen, int val) 239 { 240 int ret = !(expr <= val); 241 242 llen += printf(" = %d ", expr); 243 result(llen, ret ? FAIL : OK); 244 return ret; 245 } 246 247 248 #define EXPECT_LT(cond, expr, val) \ 249 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 250 251 static int expect_lt(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_SYSZR(cond, expr) \ 262 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 263 264 static int expect_syszr(int expr, int llen) 265 { 266 int ret = 0; 267 268 if (expr) { 269 ret = 1; 270 llen += printf(" = %d %s ", expr, errorname(errno)); 271 result(llen, FAIL); 272 } else { 273 llen += printf(" = %d ", expr); 274 result(llen, OK); 275 } 276 return ret; 277 } 278 279 280 #define EXPECT_SYSEQ(cond, expr, val) \ 281 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 282 283 static int expect_syseq(int expr, int llen, int val) 284 { 285 int ret = 0; 286 287 if (expr != val) { 288 ret = 1; 289 llen += printf(" = %d %s ", expr, errorname(errno)); 290 result(llen, FAIL); 291 } else { 292 llen += printf(" = %d ", expr); 293 result(llen, OK); 294 } 295 return ret; 296 } 297 298 299 #define EXPECT_SYSNE(cond, expr, val) \ 300 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 301 302 static int expect_sysne(int expr, int llen, int val) 303 { 304 int ret = 0; 305 306 if (expr == val) { 307 ret = 1; 308 llen += printf(" = %d %s ", expr, errorname(errno)); 309 result(llen, FAIL); 310 } else { 311 llen += printf(" = %d ", expr); 312 result(llen, OK); 313 } 314 return ret; 315 } 316 317 318 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 319 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 320 321 #define EXPECT_SYSER(cond, expr, expret, experr) \ 322 EXPECT_SYSER2(cond, expr, expret, experr, 0) 323 324 static int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 325 { 326 int ret = 0; 327 int _errno = errno; 328 329 llen += printf(" = %d %s ", expr, errorname(_errno)); 330 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 331 ret = 1; 332 if (experr2 == 0) 333 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 334 else 335 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 336 result(llen, FAIL); 337 } else { 338 result(llen, OK); 339 } 340 return ret; 341 } 342 343 344 #define EXPECT_PTRZR(cond, expr) \ 345 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 346 347 static int expect_ptrzr(const void *expr, int llen) 348 { 349 int ret = 0; 350 351 llen += printf(" = <%p> ", expr); 352 if (expr) { 353 ret = 1; 354 result(llen, FAIL); 355 } else { 356 result(llen, OK); 357 } 358 return ret; 359 } 360 361 362 #define EXPECT_PTRNZ(cond, expr) \ 363 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 364 365 static int expect_ptrnz(const void *expr, int llen) 366 { 367 int ret = 0; 368 369 llen += printf(" = <%p> ", expr); 370 if (!expr) { 371 ret = 1; 372 result(llen, FAIL); 373 } else { 374 result(llen, OK); 375 } 376 return ret; 377 } 378 379 #define EXPECT_PTREQ(cond, expr, cmp) \ 380 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 381 382 static int expect_ptreq(const void *expr, int llen, const void *cmp) 383 { 384 int ret = 0; 385 386 llen += printf(" = <%p> ", expr); 387 if (expr != cmp) { 388 ret = 1; 389 result(llen, FAIL); 390 } else { 391 result(llen, OK); 392 } 393 return ret; 394 } 395 396 #define EXPECT_PTRNE(cond, expr, cmp) \ 397 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 398 399 static int expect_ptrne(const void *expr, int llen, const void *cmp) 400 { 401 int ret = 0; 402 403 llen += printf(" = <%p> ", expr); 404 if (expr == cmp) { 405 ret = 1; 406 result(llen, FAIL); 407 } else { 408 result(llen, OK); 409 } 410 return ret; 411 } 412 413 #define EXPECT_PTRGE(cond, expr, cmp) \ 414 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 415 416 static int expect_ptrge(const void *expr, int llen, const void *cmp) 417 { 418 int ret = !(expr >= cmp); 419 420 llen += printf(" = <%p> ", expr); 421 result(llen, ret ? FAIL : OK); 422 return ret; 423 } 424 425 #define EXPECT_PTRGT(cond, expr, cmp) \ 426 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 427 428 static int expect_ptrgt(const void *expr, int llen, const void *cmp) 429 { 430 int ret = !(expr > cmp); 431 432 llen += printf(" = <%p> ", expr); 433 result(llen, ret ? FAIL : OK); 434 return ret; 435 } 436 437 438 #define EXPECT_PTRLE(cond, expr, cmp) \ 439 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 440 441 static int expect_ptrle(const void *expr, int llen, const void *cmp) 442 { 443 int ret = !(expr <= cmp); 444 445 llen += printf(" = <%p> ", expr); 446 result(llen, ret ? FAIL : OK); 447 return ret; 448 } 449 450 451 #define EXPECT_PTRLT(cond, expr, cmp) \ 452 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 453 454 static int expect_ptrlt(const void *expr, int llen, const void *cmp) 455 { 456 int ret = !(expr < cmp); 457 458 llen += printf(" = <%p> ", expr); 459 result(llen, ret ? FAIL : OK); 460 return ret; 461 } 462 463 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 464 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 465 466 #define EXPECT_PTRER(cond, expr, expret, experr) \ 467 EXPECT_PTRER2(cond, expr, expret, experr, 0) 468 469 static int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 470 { 471 int ret = 0; 472 int _errno = errno; 473 474 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 475 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 476 ret = 1; 477 if (experr2 == 0) 478 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 479 else 480 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 481 result(llen, FAIL); 482 } else { 483 result(llen, OK); 484 } 485 return ret; 486 } 487 488 #define EXPECT_STRZR(cond, expr) \ 489 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 490 491 static int expect_strzr(const char *expr, int llen) 492 { 493 int ret = 0; 494 495 llen += printf(" = <%s> ", expr); 496 if (expr) { 497 ret = 1; 498 result(llen, FAIL); 499 } else { 500 result(llen, OK); 501 } 502 return ret; 503 } 504 505 506 #define EXPECT_STRNZ(cond, expr) \ 507 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 508 509 static int expect_strnz(const char *expr, int llen) 510 { 511 int ret = 0; 512 513 llen += printf(" = <%s> ", expr); 514 if (!expr) { 515 ret = 1; 516 result(llen, FAIL); 517 } else { 518 result(llen, OK); 519 } 520 return ret; 521 } 522 523 524 #define EXPECT_STREQ(cond, expr, cmp) \ 525 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 526 527 static int expect_streq(const char *expr, int llen, const char *cmp) 528 { 529 int ret = 0; 530 531 llen += printf(" = <%s> ", expr); 532 if (strcmp(expr, cmp) != 0) { 533 ret = 1; 534 result(llen, FAIL); 535 } else { 536 result(llen, OK); 537 } 538 return ret; 539 } 540 541 542 #define EXPECT_STRNE(cond, expr, cmp) \ 543 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 544 545 static int expect_strne(const char *expr, int llen, const char *cmp) 546 { 547 int ret = 0; 548 549 llen += printf(" = <%s> ", expr); 550 if (strcmp(expr, cmp) == 0) { 551 ret = 1; 552 result(llen, FAIL); 553 } else { 554 result(llen, OK); 555 } 556 return ret; 557 } 558 559 560 /* declare tests based on line numbers. There must be exactly one test per line. */ 561 #define CASE_TEST(name) \ 562 case __LINE__: llen += printf("%d %s", test, #name); 563 564 565 /* used by some syscall tests below */ 566 int test_getdents64(const char *dir) 567 { 568 char buffer[4096]; 569 int fd, ret; 570 int err; 571 572 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 573 if (ret < 0) 574 return ret; 575 576 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 577 err = errno; 578 close(fd); 579 580 errno = err; 581 return ret; 582 } 583 584 static int test_getpagesize(void) 585 { 586 long x = getpagesize(); 587 int c; 588 589 if (x < 0) 590 return x; 591 592 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 593 /* 594 * x86 family is always 4K page. 595 */ 596 c = (x == 4096); 597 #elif defined(__aarch64__) 598 /* 599 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 600 * which are selected at kernel compilation time. 601 */ 602 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 603 #else 604 /* 605 * Assuming other architectures must have at least 4K page. 606 */ 607 c = (x >= 4096); 608 #endif 609 610 return !c; 611 } 612 613 static int test_fork(void) 614 { 615 int status; 616 pid_t pid; 617 618 /* flush the printf buffer to avoid child flush it */ 619 fflush(stdout); 620 fflush(stderr); 621 622 pid = fork(); 623 624 switch (pid) { 625 case -1: 626 return 1; 627 628 case 0: 629 exit(123); 630 631 default: 632 pid = waitpid(pid, &status, 0); 633 634 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 635 } 636 } 637 638 static int test_stat_timestamps(void) 639 { 640 struct stat st; 641 642 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 643 return 1; 644 645 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 646 return 1; 647 648 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 649 return 1; 650 651 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 652 return 1; 653 654 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 655 return 1; 656 657 return 0; 658 } 659 660 int test_mmap_munmap(void) 661 { 662 int ret, fd, i; 663 void *mem; 664 size_t page_size, file_size, length; 665 off_t offset, pa_offset; 666 struct stat stat_buf; 667 const char * const files[] = { 668 "/dev/zero", 669 "/proc/1/exe", "/proc/self/exe", 670 argv0, 671 NULL 672 }; 673 674 page_size = getpagesize(); 675 if (page_size < 0) 676 return -1; 677 678 /* find a right file to mmap, existed and accessible */ 679 for (i = 0; files[i] != NULL; i++) { 680 ret = fd = open(files[i], O_RDONLY); 681 if (ret == -1) 682 continue; 683 else 684 break; 685 } 686 if (ret == -1) 687 return ret; 688 689 ret = stat(files[i], &stat_buf); 690 if (ret == -1) 691 goto end; 692 693 /* file size of the special /dev/zero is 0, let's assign one manually */ 694 if (i == 0) 695 file_size = 3*page_size; 696 else 697 file_size = stat_buf.st_size; 698 699 offset = file_size - 1; 700 if (offset < 0) 701 offset = 0; 702 length = file_size - offset; 703 pa_offset = offset & ~(page_size - 1); 704 705 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 706 if (mem == MAP_FAILED) { 707 ret = -1; 708 goto end; 709 } 710 711 ret = munmap(mem, length + offset - pa_offset); 712 713 end: 714 close(fd); 715 return ret; 716 } 717 718 719 /* Run syscall tests between IDs <min> and <max>. 720 * Return 0 on success, non-zero on failure. 721 */ 722 int run_syscall(int min, int max) 723 { 724 struct timeval tv; 725 struct timezone tz; 726 struct stat stat_buf; 727 int euid0; 728 int proc; 729 int test; 730 int tmp; 731 int ret = 0; 732 void *p1, *p2; 733 int has_gettid = 1; 734 735 /* <proc> indicates whether or not /proc is mounted */ 736 proc = stat("/proc", &stat_buf) == 0; 737 738 /* this will be used to skip certain tests that can't be run unprivileged */ 739 euid0 = geteuid() == 0; 740 741 /* from 2.30, glibc provides gettid() */ 742 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 743 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 744 #endif 745 746 for (test = min; test >= 0 && test <= max; test++) { 747 int llen = 0; /* line length */ 748 749 /* avoid leaving empty lines below, this will insert holes into 750 * test numbers. 751 */ 752 switch (test + __LINE__ + 1) { 753 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 754 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 755 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 756 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 757 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 758 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 759 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 760 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 761 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break; 762 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break; 763 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; 764 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 765 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 766 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 767 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 768 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break; 769 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 770 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 771 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 772 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 773 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 774 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 775 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 776 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 777 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 778 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 779 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 780 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 781 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 782 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 783 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 784 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 785 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 786 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 787 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 788 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 789 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 790 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 791 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 792 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 793 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 794 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 795 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 796 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 797 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 798 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 799 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap((void *)1, 0), -1, EINVAL); break; 800 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 801 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break; 802 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break; 803 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 804 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 805 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break; 806 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 807 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 808 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 809 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 810 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 811 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; 812 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 813 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 814 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat((void *)1, &stat_buf), -1, EFAULT); break; 815 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 816 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 817 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 818 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 819 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 820 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 821 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 822 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 823 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 824 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 825 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 826 case __LINE__: 827 return ret; /* must be last */ 828 /* note: do not set any defaults so as to permit holes above */ 829 } 830 } 831 return ret; 832 } 833 834 int run_stdlib(int min, int max) 835 { 836 int test; 837 int tmp; 838 int ret = 0; 839 void *p1, *p2; 840 841 for (test = min; test >= 0 && test <= max; test++) { 842 int llen = 0; /* line length */ 843 844 /* avoid leaving empty lines below, this will insert holes into 845 * test numbers. 846 */ 847 switch (test + __LINE__ + 1) { 848 CASE_TEST(environ); EXPECT_PTREQ(1, environ, test_envp); break; 849 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 850 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 851 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 852 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 853 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 854 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 855 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 856 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 857 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 858 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 859 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 860 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 861 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 862 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 863 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 864 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 865 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 866 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 867 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 868 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 869 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 870 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 871 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 872 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 873 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 874 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 875 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 876 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 877 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 878 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 879 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 880 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 881 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 882 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 883 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 884 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 885 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 886 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 887 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 888 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 889 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 890 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 891 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 892 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 893 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 894 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 895 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 896 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 897 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 898 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 899 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 900 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 901 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 902 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 903 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 904 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 905 CASE_TEST(limit_intptr_min_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break; 906 CASE_TEST(limit_intptr_max_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break; 907 CASE_TEST(limit_uintptr_max_64); EXPECT_EQ(sizeof(long) == 8, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break; 908 CASE_TEST(limit_ptrdiff_min_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break; 909 CASE_TEST(limit_ptrdiff_max_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break; 910 CASE_TEST(limit_size_max_64); EXPECT_EQ(sizeof(long) == 8, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break; 911 CASE_TEST(limit_intptr_min_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MIN, (intptr_t) 0x80000000); break; 912 CASE_TEST(limit_intptr_max_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MAX, (intptr_t) 0x7fffffff); break; 913 CASE_TEST(limit_uintptr_max_32); EXPECT_EQ(sizeof(long) == 4, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break; 914 CASE_TEST(limit_ptrdiff_min_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break; 915 CASE_TEST(limit_ptrdiff_max_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break; 916 CASE_TEST(limit_size_max_32); EXPECT_EQ(sizeof(long) == 4, SIZE_MAX, (size_t) 0xffffffffU); break; 917 case __LINE__: 918 return ret; /* must be last */ 919 /* note: do not set any defaults so as to permit holes above */ 920 } 921 } 922 return ret; 923 } 924 925 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 926 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 927 928 static int expect_vfprintf(int llen, size_t c, const char *expected, const char *fmt, ...) 929 { 930 int ret, fd, w, r; 931 char buf[100]; 932 FILE *memfile; 933 va_list args; 934 935 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600); 936 if (fd == -1) { 937 result(llen, SKIPPED); 938 return 0; 939 } 940 941 memfile = fdopen(fd, "w+"); 942 if (!memfile) { 943 result(llen, FAIL); 944 return 1; 945 } 946 947 va_start(args, fmt); 948 w = vfprintf(memfile, fmt, args); 949 va_end(args); 950 951 if (w != c) { 952 llen += printf(" written(%d) != %d", w, (int) c); 953 result(llen, FAIL); 954 return 1; 955 } 956 957 fflush(memfile); 958 lseek(fd, 0, SEEK_SET); 959 960 r = read(fd, buf, sizeof(buf) - 1); 961 buf[r] = '\0'; 962 963 fclose(memfile); 964 965 if (r != w) { 966 llen += printf(" written(%d) != read(%d)", w, r); 967 result(llen, FAIL); 968 return 1; 969 } 970 971 llen += printf(" \"%s\" = \"%s\"", expected, buf); 972 ret = strncmp(expected, buf, c); 973 974 result(llen, ret ? FAIL : OK); 975 return ret; 976 } 977 978 static int run_vfprintf(int min, int max) 979 { 980 int test; 981 int tmp; 982 int ret = 0; 983 void *p1, *p2; 984 985 for (test = min; test >= 0 && test <= max; test++) { 986 int llen = 0; /* line length */ 987 988 /* avoid leaving empty lines below, this will insert holes into 989 * test numbers. 990 */ 991 switch (test + __LINE__ + 1) { 992 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 993 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 994 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 995 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 996 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 997 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 998 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 999 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1000 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1001 case __LINE__: 1002 return ret; /* must be last */ 1003 /* note: do not set any defaults so as to permit holes above */ 1004 } 1005 } 1006 return ret; 1007 } 1008 1009 static int smash_stack(void) 1010 { 1011 char buf[100]; 1012 volatile char *ptr = buf; 1013 size_t i; 1014 1015 for (i = 0; i < 200; i++) 1016 ptr[i] = 'P'; 1017 1018 return 1; 1019 } 1020 1021 static int run_protection(int min, int max) 1022 { 1023 pid_t pid; 1024 int llen = 0, status; 1025 1026 llen += printf("0 -fstackprotector "); 1027 1028 #if !defined(_NOLIBC_STACKPROTECTOR) 1029 llen += printf("not supported"); 1030 result(llen, SKIPPED); 1031 return 0; 1032 #endif 1033 1034 #if defined(_NOLIBC_STACKPROTECTOR) 1035 if (!__stack_chk_guard) { 1036 llen += printf("__stack_chk_guard not initialized"); 1037 result(llen, FAIL); 1038 return 1; 1039 } 1040 #endif 1041 1042 pid = -1; 1043 pid = fork(); 1044 1045 switch (pid) { 1046 case -1: 1047 llen += printf("fork()"); 1048 result(llen, FAIL); 1049 return 1; 1050 1051 case 0: 1052 close(STDOUT_FILENO); 1053 close(STDERR_FILENO); 1054 1055 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1056 smash_stack(); 1057 return 1; 1058 1059 default: 1060 pid = waitpid(pid, &status, 0); 1061 1062 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1063 llen += printf("waitpid()"); 1064 result(llen, FAIL); 1065 return 1; 1066 } 1067 result(llen, OK); 1068 return 0; 1069 } 1070 } 1071 1072 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1073 int prepare(void) 1074 { 1075 struct stat stat_buf; 1076 1077 /* It's possible that /dev doesn't even exist or was not mounted, so 1078 * we'll try to create it, mount it, or create minimal entries into it. 1079 * We want at least /dev/null and /dev/console. 1080 */ 1081 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1082 if (stat("/dev/console", &stat_buf) != 0 || 1083 stat("/dev/null", &stat_buf) != 0 || 1084 stat("/dev/zero", &stat_buf) != 0) { 1085 /* try devtmpfs first, otherwise fall back to manual creation */ 1086 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1087 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1088 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1089 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1090 } 1091 } 1092 } 1093 1094 /* If no /dev/console was found before calling init, stdio is closed so 1095 * we need to reopen it from /dev/console. If it failed above, it will 1096 * still fail here and we cannot emit a message anyway. 1097 */ 1098 if (close(dup(1)) == -1) { 1099 int fd = open("/dev/console", O_RDWR); 1100 1101 if (fd >= 0) { 1102 if (fd != 0) 1103 dup2(fd, 0); 1104 if (fd != 1) 1105 dup2(fd, 1); 1106 if (fd != 2) 1107 dup2(fd, 2); 1108 if (fd > 2) 1109 close(fd); 1110 puts("\nSuccessfully reopened /dev/console."); 1111 } 1112 } 1113 1114 /* try to mount /proc if not mounted. Silently fail otherwise */ 1115 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1116 if (stat("/proc/self", &stat_buf) != 0) { 1117 /* If not mountable, remove /proc completely to avoid misuse */ 1118 if (mount("none", "/proc", "proc", 0, 0) != 0) 1119 rmdir("/proc"); 1120 } 1121 } 1122 1123 /* some tests rely on a writable /tmp */ 1124 mkdir("/tmp", 0755); 1125 1126 return 0; 1127 } 1128 1129 /* This is the definition of known test names, with their functions */ 1130 static const struct test test_names[] = { 1131 /* add new tests here */ 1132 { .name = "syscall", .func = run_syscall }, 1133 { .name = "stdlib", .func = run_stdlib }, 1134 { .name = "vfprintf", .func = run_vfprintf }, 1135 { .name = "protection", .func = run_protection }, 1136 { 0 } 1137 }; 1138 1139 int is_setting_valid(char *test) 1140 { 1141 int idx, len, test_len, valid = 0; 1142 char delimiter; 1143 1144 if (!test) 1145 return valid; 1146 1147 test_len = strlen(test); 1148 1149 for (idx = 0; test_names[idx].name; idx++) { 1150 len = strlen(test_names[idx].name); 1151 if (test_len < len) 1152 continue; 1153 1154 if (strncmp(test, test_names[idx].name, len) != 0) 1155 continue; 1156 1157 delimiter = test[len]; 1158 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1159 continue; 1160 1161 valid = 1; 1162 break; 1163 } 1164 1165 return valid; 1166 } 1167 1168 int main(int argc, char **argv, char **envp) 1169 { 1170 int min = 0; 1171 int max = INT_MAX; 1172 int ret = 0; 1173 int err; 1174 int idx; 1175 char *test; 1176 1177 argv0 = argv[0]; 1178 test_envp = envp; 1179 1180 /* when called as init, it's possible that no console was opened, for 1181 * example if no /dev file system was provided. We'll check that fd#1 1182 * was opened, and if not we'll attempt to create and open /dev/console 1183 * and /dev/null that we'll use for later tests. 1184 */ 1185 if (getpid() == 1) 1186 prepare(); 1187 1188 /* the definition of a series of tests comes from either argv[1] or the 1189 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1190 * series of test names and optional ranges: 1191 * syscall:5-15[:.*],stdlib:8-10 1192 */ 1193 test = argv[1]; 1194 if (!is_setting_valid(test)) 1195 test = getenv("NOLIBC_TEST"); 1196 1197 if (is_setting_valid(test)) { 1198 char *comma, *colon, *dash, *value; 1199 1200 do { 1201 comma = strchr(test, ','); 1202 if (comma) 1203 *(comma++) = '\0'; 1204 1205 colon = strchr(test, ':'); 1206 if (colon) 1207 *(colon++) = '\0'; 1208 1209 for (idx = 0; test_names[idx].name; idx++) { 1210 if (strcmp(test, test_names[idx].name) == 0) 1211 break; 1212 } 1213 1214 if (test_names[idx].name) { 1215 /* The test was named, it will be called at least 1216 * once. We may have an optional range at <colon> 1217 * here, which defaults to the full range. 1218 */ 1219 do { 1220 min = 0; max = INT_MAX; 1221 value = colon; 1222 if (value && *value) { 1223 colon = strchr(value, ':'); 1224 if (colon) 1225 *(colon++) = '\0'; 1226 1227 dash = strchr(value, '-'); 1228 if (dash) 1229 *(dash++) = '\0'; 1230 1231 /* support :val: :min-max: :min-: :-max: */ 1232 if (*value) 1233 min = atoi(value); 1234 if (!dash) 1235 max = min; 1236 else if (*dash) 1237 max = atoi(dash); 1238 1239 value = colon; 1240 } 1241 1242 /* now's time to call the test */ 1243 printf("Running test '%s'\n", test_names[idx].name); 1244 err = test_names[idx].func(min, max); 1245 ret += err; 1246 printf("Errors during this test: %d\n\n", err); 1247 } while (colon && *colon); 1248 } else 1249 printf("Ignoring unknown test name '%s'\n", test); 1250 1251 test = comma; 1252 } while (test && *test); 1253 } else { 1254 /* no test mentioned, run everything */ 1255 for (idx = 0; test_names[idx].name; idx++) { 1256 printf("Running test '%s'\n", test_names[idx].name); 1257 err = test_names[idx].func(min, max); 1258 ret += err; 1259 printf("Errors during this test: %d\n\n", err); 1260 } 1261 } 1262 1263 printf("Total number of errors: %d\n", ret); 1264 1265 if (getpid() == 1) { 1266 /* we're running as init, there's no other process on the 1267 * system, thus likely started from a VM for a quick check. 1268 * Exiting will provoke a kernel panic that may be reported 1269 * as an error by Qemu or the hypervisor, while stopping 1270 * cleanly will often be reported as a success. This allows 1271 * to use the output of this program for bisecting kernels. 1272 */ 1273 printf("Leaving init with final status: %d\n", !!ret); 1274 if (ret == 0) 1275 reboot(RB_POWER_OFF); 1276 #if defined(__x86_64__) 1277 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1278 * exit with status code 2N+1 when N is written to 0x501. We 1279 * hard-code the syscall here as it's arch-dependent. 1280 */ 1281 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1282 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1283 /* if it does nothing, fall back to the regular panic */ 1284 #endif 1285 } 1286 1287 printf("Exiting with status %d\n", !!ret); 1288 return !!ret; 1289 } 1290