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