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