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 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 45 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 46 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 47 48 /* will be used to test initialization of environ */ 49 static char **test_envp; 50 51 /* will be used to test initialization of argv */ 52 static char **test_argv; 53 54 /* will be used to test initialization of argc */ 55 static int test_argc; 56 57 /* will be used by some test cases as readable file, please don't write it */ 58 static const char *argv0; 59 60 /* definition of a series of tests */ 61 struct test { 62 const char *name; /* test name */ 63 int (*func)(int min, int max); /* handler */ 64 }; 65 66 #ifndef _NOLIBC_STDLIB_H 67 char *itoa(int i) 68 { 69 static char buf[12]; 70 int ret; 71 72 ret = snprintf(buf, sizeof(buf), "%d", i); 73 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 74 } 75 #endif 76 77 #define CASE_ERR(err) \ 78 case err: return #err 79 80 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 81 * or the decimal value for less common ones. 82 */ 83 const char *errorname(int err) 84 { 85 switch (err) { 86 case 0: return "SUCCESS"; 87 CASE_ERR(EPERM); 88 CASE_ERR(ENOENT); 89 CASE_ERR(ESRCH); 90 CASE_ERR(EINTR); 91 CASE_ERR(EIO); 92 CASE_ERR(ENXIO); 93 CASE_ERR(E2BIG); 94 CASE_ERR(ENOEXEC); 95 CASE_ERR(EBADF); 96 CASE_ERR(ECHILD); 97 CASE_ERR(EAGAIN); 98 CASE_ERR(ENOMEM); 99 CASE_ERR(EACCES); 100 CASE_ERR(EFAULT); 101 CASE_ERR(ENOTBLK); 102 CASE_ERR(EBUSY); 103 CASE_ERR(EEXIST); 104 CASE_ERR(EXDEV); 105 CASE_ERR(ENODEV); 106 CASE_ERR(ENOTDIR); 107 CASE_ERR(EISDIR); 108 CASE_ERR(EINVAL); 109 CASE_ERR(ENFILE); 110 CASE_ERR(EMFILE); 111 CASE_ERR(ENOTTY); 112 CASE_ERR(ETXTBSY); 113 CASE_ERR(EFBIG); 114 CASE_ERR(ENOSPC); 115 CASE_ERR(ESPIPE); 116 CASE_ERR(EROFS); 117 CASE_ERR(EMLINK); 118 CASE_ERR(EPIPE); 119 CASE_ERR(EDOM); 120 CASE_ERR(ERANGE); 121 CASE_ERR(ENOSYS); 122 CASE_ERR(EOVERFLOW); 123 default: 124 return itoa(err); 125 } 126 } 127 128 static void putcharn(char c, size_t n) 129 { 130 char buf[64]; 131 132 memset(buf, c, n); 133 buf[n] = '\0'; 134 fputs(buf, stdout); 135 } 136 137 enum RESULT { 138 OK, 139 FAIL, 140 SKIPPED, 141 }; 142 143 static void result(int llen, enum RESULT r) 144 { 145 const char *msg; 146 147 if (r == OK) 148 msg = " [OK]"; 149 else if (r == SKIPPED) 150 msg = "[SKIPPED]"; 151 else 152 msg = "[FAIL]"; 153 154 if (llen < 64) 155 putcharn(' ', 64 - llen); 156 puts(msg); 157 } 158 159 /* The tests below are intended to be used by the macroes, which evaluate 160 * expression <expr>, print the status to stdout, and update the "ret" 161 * variable to count failures. The functions themselves return the number 162 * of failures, thus either 0 or 1. 163 */ 164 165 #define EXPECT_ZR(cond, expr) \ 166 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 167 168 static int expect_zr(int expr, int llen) 169 { 170 int ret = !(expr == 0); 171 172 llen += printf(" = %d ", expr); 173 result(llen, ret ? FAIL : OK); 174 return ret; 175 } 176 177 178 #define EXPECT_NZ(cond, expr, val) \ 179 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 180 181 static int expect_nz(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_EQ(cond, expr, val) \ 192 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 193 194 static int expect_eq(uint64_t expr, int llen, uint64_t val) 195 { 196 int ret = !(expr == val); 197 198 llen += printf(" = %lld ", (long long)expr); 199 result(llen, ret ? FAIL : OK); 200 return ret; 201 } 202 203 204 #define EXPECT_NE(cond, expr, val) \ 205 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 206 207 static int expect_ne(int expr, int llen, int val) 208 { 209 int ret = !(expr != val); 210 211 llen += printf(" = %d ", expr); 212 result(llen, ret ? FAIL : OK); 213 return ret; 214 } 215 216 217 #define EXPECT_GE(cond, expr, val) \ 218 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 219 220 static int expect_ge(int expr, int llen, int val) 221 { 222 int ret = !(expr >= val); 223 224 llen += printf(" = %d ", expr); 225 result(llen, ret ? FAIL : OK); 226 return ret; 227 } 228 229 230 #define EXPECT_GT(cond, expr, val) \ 231 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 232 233 static int expect_gt(int expr, int llen, int val) 234 { 235 int ret = !(expr > val); 236 237 llen += printf(" = %d ", expr); 238 result(llen, ret ? FAIL : OK); 239 return ret; 240 } 241 242 243 #define EXPECT_LE(cond, expr, val) \ 244 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 245 246 static int expect_le(int expr, int llen, int val) 247 { 248 int ret = !(expr <= val); 249 250 llen += printf(" = %d ", expr); 251 result(llen, ret ? FAIL : OK); 252 return ret; 253 } 254 255 256 #define EXPECT_LT(cond, expr, val) \ 257 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 258 259 static int expect_lt(int expr, int llen, int val) 260 { 261 int ret = !(expr < val); 262 263 llen += printf(" = %d ", expr); 264 result(llen, ret ? FAIL : OK); 265 return ret; 266 } 267 268 269 #define EXPECT_SYSZR(cond, expr) \ 270 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 271 272 static int expect_syszr(int expr, int llen) 273 { 274 int ret = 0; 275 276 if (expr) { 277 ret = 1; 278 llen += printf(" = %d %s ", expr, errorname(errno)); 279 result(llen, FAIL); 280 } else { 281 llen += printf(" = %d ", expr); 282 result(llen, OK); 283 } 284 return ret; 285 } 286 287 288 #define EXPECT_SYSEQ(cond, expr, val) \ 289 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 290 291 static int expect_syseq(int expr, int llen, int val) 292 { 293 int ret = 0; 294 295 if (expr != val) { 296 ret = 1; 297 llen += printf(" = %d %s ", expr, errorname(errno)); 298 result(llen, FAIL); 299 } else { 300 llen += printf(" = %d ", expr); 301 result(llen, OK); 302 } 303 return ret; 304 } 305 306 307 #define EXPECT_SYSNE(cond, expr, val) \ 308 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 309 310 static int expect_sysne(int expr, int llen, int val) 311 { 312 int ret = 0; 313 314 if (expr == val) { 315 ret = 1; 316 llen += printf(" = %d %s ", expr, errorname(errno)); 317 result(llen, FAIL); 318 } else { 319 llen += printf(" = %d ", expr); 320 result(llen, OK); 321 } 322 return ret; 323 } 324 325 326 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 327 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 328 329 #define EXPECT_SYSER(cond, expr, expret, experr) \ 330 EXPECT_SYSER2(cond, expr, expret, experr, 0) 331 332 static int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 333 { 334 int ret = 0; 335 int _errno = errno; 336 337 llen += printf(" = %d %s ", expr, errorname(_errno)); 338 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 339 ret = 1; 340 if (experr2 == 0) 341 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 342 else 343 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 344 result(llen, FAIL); 345 } else { 346 result(llen, OK); 347 } 348 return ret; 349 } 350 351 352 #define EXPECT_PTRZR(cond, expr) \ 353 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 354 355 static int expect_ptrzr(const void *expr, int llen) 356 { 357 int ret = 0; 358 359 llen += printf(" = <%p> ", expr); 360 if (expr) { 361 ret = 1; 362 result(llen, FAIL); 363 } else { 364 result(llen, OK); 365 } 366 return ret; 367 } 368 369 370 #define EXPECT_PTRNZ(cond, expr) \ 371 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 372 373 static int expect_ptrnz(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 #define EXPECT_PTREQ(cond, expr, cmp) \ 388 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 389 390 static int expect_ptreq(const void *expr, int llen, const void *cmp) 391 { 392 int ret = 0; 393 394 llen += printf(" = <%p> ", expr); 395 if (expr != cmp) { 396 ret = 1; 397 result(llen, FAIL); 398 } else { 399 result(llen, OK); 400 } 401 return ret; 402 } 403 404 #define EXPECT_PTRNE(cond, expr, cmp) \ 405 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 406 407 static int expect_ptrne(const void *expr, int llen, const void *cmp) 408 { 409 int ret = 0; 410 411 llen += printf(" = <%p> ", expr); 412 if (expr == cmp) { 413 ret = 1; 414 result(llen, FAIL); 415 } else { 416 result(llen, OK); 417 } 418 return ret; 419 } 420 421 #define EXPECT_PTRGE(cond, expr, cmp) \ 422 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 423 424 static int expect_ptrge(const void *expr, int llen, const void *cmp) 425 { 426 int ret = !(expr >= cmp); 427 428 llen += printf(" = <%p> ", expr); 429 result(llen, ret ? FAIL : OK); 430 return ret; 431 } 432 433 #define EXPECT_PTRGT(cond, expr, cmp) \ 434 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 435 436 static int expect_ptrgt(const void *expr, int llen, const void *cmp) 437 { 438 int ret = !(expr > cmp); 439 440 llen += printf(" = <%p> ", expr); 441 result(llen, ret ? FAIL : OK); 442 return ret; 443 } 444 445 446 #define EXPECT_PTRLE(cond, expr, cmp) \ 447 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 448 449 static int expect_ptrle(const void *expr, int llen, const void *cmp) 450 { 451 int ret = !(expr <= cmp); 452 453 llen += printf(" = <%p> ", expr); 454 result(llen, ret ? FAIL : OK); 455 return ret; 456 } 457 458 459 #define EXPECT_PTRLT(cond, expr, cmp) \ 460 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 461 462 static int expect_ptrlt(const void *expr, int llen, const void *cmp) 463 { 464 int ret = !(expr < cmp); 465 466 llen += printf(" = <%p> ", expr); 467 result(llen, ret ? FAIL : OK); 468 return ret; 469 } 470 471 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 472 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 473 474 #define EXPECT_PTRER(cond, expr, expret, experr) \ 475 EXPECT_PTRER2(cond, expr, expret, experr, 0) 476 477 static int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 478 { 479 int ret = 0; 480 int _errno = errno; 481 482 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 483 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 484 ret = 1; 485 if (experr2 == 0) 486 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 487 else 488 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 489 result(llen, FAIL); 490 } else { 491 result(llen, OK); 492 } 493 return ret; 494 } 495 496 #define EXPECT_STRZR(cond, expr) \ 497 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 498 499 static int expect_strzr(const char *expr, int llen) 500 { 501 int ret = 0; 502 503 llen += printf(" = <%s> ", expr); 504 if (expr) { 505 ret = 1; 506 result(llen, FAIL); 507 } else { 508 result(llen, OK); 509 } 510 return ret; 511 } 512 513 514 #define EXPECT_STRNZ(cond, expr) \ 515 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 516 517 static int expect_strnz(const char *expr, int llen) 518 { 519 int ret = 0; 520 521 llen += printf(" = <%s> ", expr); 522 if (!expr) { 523 ret = 1; 524 result(llen, FAIL); 525 } else { 526 result(llen, OK); 527 } 528 return ret; 529 } 530 531 532 #define EXPECT_STREQ(cond, expr, cmp) \ 533 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 534 535 static int expect_streq(const char *expr, int llen, const char *cmp) 536 { 537 int ret = 0; 538 539 llen += printf(" = <%s> ", expr); 540 if (strcmp(expr, cmp) != 0) { 541 ret = 1; 542 result(llen, FAIL); 543 } else { 544 result(llen, OK); 545 } 546 return ret; 547 } 548 549 550 #define EXPECT_STRNE(cond, expr, cmp) \ 551 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 552 553 static int expect_strne(const char *expr, int llen, const char *cmp) 554 { 555 int ret = 0; 556 557 llen += printf(" = <%s> ", expr); 558 if (strcmp(expr, cmp) == 0) { 559 ret = 1; 560 result(llen, FAIL); 561 } else { 562 result(llen, OK); 563 } 564 return ret; 565 } 566 567 568 /* declare tests based on line numbers. There must be exactly one test per line. */ 569 #define CASE_TEST(name) \ 570 case __LINE__: llen += printf("%d %s", test, #name); 571 572 int run_startup(int min, int max) 573 { 574 int test; 575 int ret = 0; 576 /* kernel at least passes HOME and TERM, shell passes more */ 577 int env_total = 2; 578 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 579 extern char end; 580 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 581 /* differ from nolibc, both glibc and musl have no global _auxv */ 582 const unsigned long *test_auxv = (void *)-1; 583 #ifdef NOLIBC 584 test_auxv = _auxv; 585 #endif 586 587 for (test = min; test >= 0 && test <= max; test++) { 588 int llen = 0; /* line length */ 589 590 /* avoid leaving empty lines below, this will insert holes into 591 * test numbers. 592 */ 593 switch (test + __LINE__ + 1) { 594 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 595 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 596 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 597 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 598 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 599 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 600 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 601 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 602 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 603 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 604 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 605 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 606 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 607 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 608 CASE_TEST(auxv_AT_PAGESZ); EXPECT_GE(1, getauxval(AT_PAGESZ), 4096); break; 609 case __LINE__: 610 return ret; /* must be last */ 611 /* note: do not set any defaults so as to permit holes above */ 612 } 613 } 614 return ret; 615 } 616 617 618 /* used by some syscall tests below */ 619 int test_getdents64(const char *dir) 620 { 621 char buffer[4096]; 622 int fd, ret; 623 int err; 624 625 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 626 if (ret < 0) 627 return ret; 628 629 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 630 err = errno; 631 close(fd); 632 633 errno = err; 634 return ret; 635 } 636 637 static int test_getpagesize(void) 638 { 639 int x = getpagesize(); 640 int c; 641 642 if (x < 0) 643 return x; 644 645 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 646 /* 647 * x86 family is always 4K page. 648 */ 649 c = (x == 4096); 650 #elif defined(__aarch64__) 651 /* 652 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 653 * which are selected at kernel compilation time. 654 */ 655 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 656 #else 657 /* 658 * Assuming other architectures must have at least 4K page. 659 */ 660 c = (x >= 4096); 661 #endif 662 663 return !c; 664 } 665 666 static int test_fork(void) 667 { 668 int status; 669 pid_t pid; 670 671 /* flush the printf buffer to avoid child flush it */ 672 fflush(stdout); 673 fflush(stderr); 674 675 pid = fork(); 676 677 switch (pid) { 678 case -1: 679 return 1; 680 681 case 0: 682 exit(123); 683 684 default: 685 pid = waitpid(pid, &status, 0); 686 687 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 688 } 689 } 690 691 static int test_stat_timestamps(void) 692 { 693 struct stat st; 694 695 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 696 return 1; 697 698 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 699 return 1; 700 701 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 702 return 1; 703 704 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 705 return 1; 706 707 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 708 return 1; 709 710 return 0; 711 } 712 713 int test_mmap_munmap(void) 714 { 715 int ret, fd, i; 716 void *mem; 717 size_t page_size, file_size, length; 718 off_t offset, pa_offset; 719 struct stat stat_buf; 720 const char * const files[] = { 721 "/dev/zero", 722 "/proc/1/exe", "/proc/self/exe", 723 argv0, 724 NULL 725 }; 726 727 page_size = getpagesize(); 728 if (page_size < 0) 729 return 1; 730 731 /* find a right file to mmap, existed and accessible */ 732 for (i = 0; files[i] != NULL; i++) { 733 ret = fd = open(files[i], O_RDONLY); 734 if (ret == -1) 735 continue; 736 else 737 break; 738 } 739 if (ret == -1) 740 return 1; 741 742 ret = stat(files[i], &stat_buf); 743 if (ret == -1) 744 goto end; 745 746 /* file size of the special /dev/zero is 0, let's assign one manually */ 747 if (i == 0) 748 file_size = 3*page_size; 749 else 750 file_size = stat_buf.st_size; 751 752 offset = file_size - 1; 753 if (offset < 0) 754 offset = 0; 755 length = file_size - offset; 756 pa_offset = offset & ~(page_size - 1); 757 758 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 759 if (mem == MAP_FAILED) { 760 ret = 1; 761 goto end; 762 } 763 764 ret = munmap(mem, length + offset - pa_offset); 765 766 end: 767 close(fd); 768 return !!ret; 769 } 770 771 static int test_pipe(void) 772 { 773 const char *const msg = "hello, nolibc"; 774 int pipefd[2]; 775 char buf[32]; 776 size_t len; 777 778 if (pipe(pipefd) == -1) 779 return 1; 780 781 write(pipefd[1], msg, strlen(msg)); 782 close(pipefd[1]); 783 len = read(pipefd[0], buf, sizeof(buf)); 784 close(pipefd[0]); 785 786 if (len != strlen(msg)) 787 return 1; 788 789 return !!memcmp(buf, msg, len); 790 } 791 792 793 /* Run syscall tests between IDs <min> and <max>. 794 * Return 0 on success, non-zero on failure. 795 */ 796 int run_syscall(int min, int max) 797 { 798 struct timeval tv; 799 struct timezone tz; 800 struct stat stat_buf; 801 int euid0; 802 int proc; 803 int test; 804 int tmp; 805 int ret = 0; 806 void *p1, *p2; 807 int has_gettid = 1; 808 809 /* <proc> indicates whether or not /proc is mounted */ 810 proc = stat("/proc", &stat_buf) == 0; 811 812 /* this will be used to skip certain tests that can't be run unprivileged */ 813 euid0 = geteuid() == 0; 814 815 /* from 2.30, glibc provides gettid() */ 816 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 817 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 818 #endif 819 820 for (test = min; test >= 0 && test <= max; test++) { 821 int llen = 0; /* line length */ 822 823 /* avoid leaving empty lines below, this will insert holes into 824 * test numbers. 825 */ 826 switch (test + __LINE__ + 1) { 827 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 828 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 829 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 830 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 831 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 832 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 833 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 834 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 835 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break; 836 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break; 837 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; 838 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 839 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 840 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 841 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 842 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break; 843 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 844 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 845 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 846 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 847 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 848 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 849 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 850 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 851 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 852 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 853 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 854 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 855 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 856 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 857 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 858 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 859 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 860 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 861 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 862 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 863 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 864 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 865 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 866 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 867 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 868 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 869 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 870 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 871 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 872 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 873 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap((void *)1, 0), -1, EINVAL); break; 874 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 875 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break; 876 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break; 877 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 878 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 879 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 880 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break; 881 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 882 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 883 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 884 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 885 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 886 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; 887 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 888 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 889 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat((void *)1, &stat_buf), -1, EFAULT); break; 890 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 891 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 892 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 893 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 894 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 895 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 896 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 897 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 898 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 899 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 900 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 901 case __LINE__: 902 return ret; /* must be last */ 903 /* note: do not set any defaults so as to permit holes above */ 904 } 905 } 906 return ret; 907 } 908 909 int run_stdlib(int min, int max) 910 { 911 int test; 912 int tmp; 913 int ret = 0; 914 void *p1, *p2; 915 916 for (test = min; test >= 0 && test <= max; test++) { 917 int llen = 0; /* line length */ 918 919 /* avoid leaving empty lines below, this will insert holes into 920 * test numbers. 921 */ 922 switch (test + __LINE__ + 1) { 923 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 924 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 925 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 926 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 927 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 928 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 929 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 930 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 931 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 932 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 933 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 934 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 935 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 936 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 937 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 938 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 939 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 940 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 941 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 942 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 943 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 944 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 945 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 946 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 947 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 948 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 949 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 950 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 951 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 952 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 953 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 954 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 955 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 956 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 957 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 958 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 959 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 960 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 961 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 962 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 963 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 964 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 965 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 966 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 967 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 968 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 969 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 970 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 971 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 972 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 973 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 974 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 975 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 976 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 977 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 978 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 979 CASE_TEST(limit_intptr_min_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break; 980 CASE_TEST(limit_intptr_max_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break; 981 CASE_TEST(limit_uintptr_max_64); EXPECT_EQ(sizeof(long) == 8, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break; 982 CASE_TEST(limit_ptrdiff_min_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break; 983 CASE_TEST(limit_ptrdiff_max_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break; 984 CASE_TEST(limit_size_max_64); EXPECT_EQ(sizeof(long) == 8, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break; 985 CASE_TEST(limit_intptr_min_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MIN, (intptr_t) 0x80000000); break; 986 CASE_TEST(limit_intptr_max_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MAX, (intptr_t) 0x7fffffff); break; 987 CASE_TEST(limit_uintptr_max_32); EXPECT_EQ(sizeof(long) == 4, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break; 988 CASE_TEST(limit_ptrdiff_min_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break; 989 CASE_TEST(limit_ptrdiff_max_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break; 990 CASE_TEST(limit_size_max_32); EXPECT_EQ(sizeof(long) == 4, SIZE_MAX, (size_t) 0xffffffffU); break; 991 case __LINE__: 992 return ret; /* must be last */ 993 /* note: do not set any defaults so as to permit holes above */ 994 } 995 } 996 return ret; 997 } 998 999 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1000 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1001 1002 static int expect_vfprintf(int llen, size_t c, const char *expected, const char *fmt, ...) 1003 { 1004 int ret, fd, w, r; 1005 char buf[100]; 1006 FILE *memfile; 1007 va_list args; 1008 1009 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600); 1010 if (fd == -1) { 1011 result(llen, SKIPPED); 1012 return 0; 1013 } 1014 1015 memfile = fdopen(fd, "w+"); 1016 if (!memfile) { 1017 result(llen, FAIL); 1018 return 1; 1019 } 1020 1021 va_start(args, fmt); 1022 w = vfprintf(memfile, fmt, args); 1023 va_end(args); 1024 1025 if (w != c) { 1026 llen += printf(" written(%d) != %d", w, (int) c); 1027 result(llen, FAIL); 1028 return 1; 1029 } 1030 1031 fflush(memfile); 1032 lseek(fd, 0, SEEK_SET); 1033 1034 r = read(fd, buf, sizeof(buf) - 1); 1035 buf[r] = '\0'; 1036 1037 fclose(memfile); 1038 1039 if (r != w) { 1040 llen += printf(" written(%d) != read(%d)", w, r); 1041 result(llen, FAIL); 1042 return 1; 1043 } 1044 1045 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1046 ret = strncmp(expected, buf, c); 1047 1048 result(llen, ret ? FAIL : OK); 1049 return ret; 1050 } 1051 1052 static int run_vfprintf(int min, int max) 1053 { 1054 int test; 1055 int tmp; 1056 int ret = 0; 1057 void *p1, *p2; 1058 1059 for (test = min; test >= 0 && test <= max; test++) { 1060 int llen = 0; /* line length */ 1061 1062 /* avoid leaving empty lines below, this will insert holes into 1063 * test numbers. 1064 */ 1065 switch (test + __LINE__ + 1) { 1066 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1067 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1068 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1069 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1070 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1071 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1072 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1073 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1074 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1075 case __LINE__: 1076 return ret; /* must be last */ 1077 /* note: do not set any defaults so as to permit holes above */ 1078 } 1079 } 1080 return ret; 1081 } 1082 1083 static int smash_stack(void) 1084 { 1085 char buf[100]; 1086 volatile char *ptr = buf; 1087 size_t i; 1088 1089 for (i = 0; i < 200; i++) 1090 ptr[i] = 'P'; 1091 1092 return 1; 1093 } 1094 1095 static int run_protection(int min, int max) 1096 { 1097 pid_t pid; 1098 int llen = 0, status; 1099 1100 llen += printf("0 -fstackprotector "); 1101 1102 #if !defined(_NOLIBC_STACKPROTECTOR) 1103 llen += printf("not supported"); 1104 result(llen, SKIPPED); 1105 return 0; 1106 #endif 1107 1108 #if defined(_NOLIBC_STACKPROTECTOR) 1109 if (!__stack_chk_guard) { 1110 llen += printf("__stack_chk_guard not initialized"); 1111 result(llen, FAIL); 1112 return 1; 1113 } 1114 #endif 1115 1116 pid = -1; 1117 pid = fork(); 1118 1119 switch (pid) { 1120 case -1: 1121 llen += printf("fork()"); 1122 result(llen, FAIL); 1123 return 1; 1124 1125 case 0: 1126 close(STDOUT_FILENO); 1127 close(STDERR_FILENO); 1128 1129 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1130 smash_stack(); 1131 return 1; 1132 1133 default: 1134 pid = waitpid(pid, &status, 0); 1135 1136 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1137 llen += printf("waitpid()"); 1138 result(llen, FAIL); 1139 return 1; 1140 } 1141 result(llen, OK); 1142 return 0; 1143 } 1144 } 1145 1146 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1147 int prepare(void) 1148 { 1149 struct stat stat_buf; 1150 1151 /* It's possible that /dev doesn't even exist or was not mounted, so 1152 * we'll try to create it, mount it, or create minimal entries into it. 1153 * We want at least /dev/null and /dev/console. 1154 */ 1155 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1156 if (stat("/dev/console", &stat_buf) != 0 || 1157 stat("/dev/null", &stat_buf) != 0 || 1158 stat("/dev/zero", &stat_buf) != 0) { 1159 /* try devtmpfs first, otherwise fall back to manual creation */ 1160 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1161 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1162 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1163 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1164 } 1165 } 1166 } 1167 1168 /* If no /dev/console was found before calling init, stdio is closed so 1169 * we need to reopen it from /dev/console. If it failed above, it will 1170 * still fail here and we cannot emit a message anyway. 1171 */ 1172 if (close(dup(1)) == -1) { 1173 int fd = open("/dev/console", O_RDWR); 1174 1175 if (fd >= 0) { 1176 if (fd != 0) 1177 dup2(fd, 0); 1178 if (fd != 1) 1179 dup2(fd, 1); 1180 if (fd != 2) 1181 dup2(fd, 2); 1182 if (fd > 2) 1183 close(fd); 1184 puts("\nSuccessfully reopened /dev/console."); 1185 } 1186 } 1187 1188 /* try to mount /proc if not mounted. Silently fail otherwise */ 1189 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1190 if (stat("/proc/self", &stat_buf) != 0) { 1191 /* If not mountable, remove /proc completely to avoid misuse */ 1192 if (mount("none", "/proc", "proc", 0, 0) != 0) 1193 rmdir("/proc"); 1194 } 1195 } 1196 1197 /* some tests rely on a writable /tmp */ 1198 mkdir("/tmp", 0755); 1199 1200 return 0; 1201 } 1202 1203 /* This is the definition of known test names, with their functions */ 1204 static const struct test test_names[] = { 1205 /* add new tests here */ 1206 { .name = "startup", .func = run_startup }, 1207 { .name = "syscall", .func = run_syscall }, 1208 { .name = "stdlib", .func = run_stdlib }, 1209 { .name = "vfprintf", .func = run_vfprintf }, 1210 { .name = "protection", .func = run_protection }, 1211 { 0 } 1212 }; 1213 1214 int is_setting_valid(char *test) 1215 { 1216 int idx, len, test_len, valid = 0; 1217 char delimiter; 1218 1219 if (!test) 1220 return valid; 1221 1222 test_len = strlen(test); 1223 1224 for (idx = 0; test_names[idx].name; idx++) { 1225 len = strlen(test_names[idx].name); 1226 if (test_len < len) 1227 continue; 1228 1229 if (strncmp(test, test_names[idx].name, len) != 0) 1230 continue; 1231 1232 delimiter = test[len]; 1233 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1234 continue; 1235 1236 valid = 1; 1237 break; 1238 } 1239 1240 return valid; 1241 } 1242 1243 int main(int argc, char **argv, char **envp) 1244 { 1245 int min = 0; 1246 int max = INT_MAX; 1247 int ret = 0; 1248 int err; 1249 int idx; 1250 char *test; 1251 1252 argv0 = argv[0]; 1253 test_argc = argc; 1254 test_argv = argv; 1255 test_envp = envp; 1256 1257 /* when called as init, it's possible that no console was opened, for 1258 * example if no /dev file system was provided. We'll check that fd#1 1259 * was opened, and if not we'll attempt to create and open /dev/console 1260 * and /dev/null that we'll use for later tests. 1261 */ 1262 if (getpid() == 1) 1263 prepare(); 1264 1265 /* the definition of a series of tests comes from either argv[1] or the 1266 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1267 * series of test names and optional ranges: 1268 * syscall:5-15[:.*],stdlib:8-10 1269 */ 1270 test = argv[1]; 1271 if (!is_setting_valid(test)) 1272 test = getenv("NOLIBC_TEST"); 1273 1274 if (is_setting_valid(test)) { 1275 char *comma, *colon, *dash, *value; 1276 1277 do { 1278 comma = strchr(test, ','); 1279 if (comma) 1280 *(comma++) = '\0'; 1281 1282 colon = strchr(test, ':'); 1283 if (colon) 1284 *(colon++) = '\0'; 1285 1286 for (idx = 0; test_names[idx].name; idx++) { 1287 if (strcmp(test, test_names[idx].name) == 0) 1288 break; 1289 } 1290 1291 if (test_names[idx].name) { 1292 /* The test was named, it will be called at least 1293 * once. We may have an optional range at <colon> 1294 * here, which defaults to the full range. 1295 */ 1296 do { 1297 min = 0; max = INT_MAX; 1298 value = colon; 1299 if (value && *value) { 1300 colon = strchr(value, ':'); 1301 if (colon) 1302 *(colon++) = '\0'; 1303 1304 dash = strchr(value, '-'); 1305 if (dash) 1306 *(dash++) = '\0'; 1307 1308 /* support :val: :min-max: :min-: :-max: */ 1309 if (*value) 1310 min = atoi(value); 1311 if (!dash) 1312 max = min; 1313 else if (*dash) 1314 max = atoi(dash); 1315 1316 value = colon; 1317 } 1318 1319 /* now's time to call the test */ 1320 printf("Running test '%s'\n", test_names[idx].name); 1321 err = test_names[idx].func(min, max); 1322 ret += err; 1323 printf("Errors during this test: %d\n\n", err); 1324 } while (colon && *colon); 1325 } else 1326 printf("Ignoring unknown test name '%s'\n", test); 1327 1328 test = comma; 1329 } while (test && *test); 1330 } else { 1331 /* no test mentioned, run everything */ 1332 for (idx = 0; test_names[idx].name; idx++) { 1333 printf("Running test '%s'\n", test_names[idx].name); 1334 err = test_names[idx].func(min, max); 1335 ret += err; 1336 printf("Errors during this test: %d\n\n", err); 1337 } 1338 } 1339 1340 printf("Total number of errors: %d\n", ret); 1341 1342 if (getpid() == 1) { 1343 /* we're running as init, there's no other process on the 1344 * system, thus likely started from a VM for a quick check. 1345 * Exiting will provoke a kernel panic that may be reported 1346 * as an error by Qemu or the hypervisor, while stopping 1347 * cleanly will often be reported as a success. This allows 1348 * to use the output of this program for bisecting kernels. 1349 */ 1350 printf("Leaving init with final status: %d\n", !!ret); 1351 if (ret == 0) 1352 reboot(RB_POWER_OFF); 1353 #if defined(__x86_64__) 1354 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1355 * exit with status code 2N+1 when N is written to 0x501. We 1356 * hard-code the syscall here as it's arch-dependent. 1357 */ 1358 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1359 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1360 /* if it does nothing, fall back to the regular panic */ 1361 #endif 1362 } 1363 1364 printf("Exiting with status %d\n", !!ret); 1365 return !!ret; 1366 } 1367