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/resource.h> 26#include <sys/stat.h> 27#include <sys/syscall.h> 28#include <sys/sysmacros.h> 29#include <sys/time.h> 30#include <sys/wait.h> 31#include <dirent.h> 32#include <errno.h> 33#include <fcntl.h> 34#include <poll.h> 35#include <sched.h> 36#include <signal.h> 37#include <stdarg.h> 38#include <stddef.h> 39#include <stdint.h> 40#include <unistd.h> 41#include <limits.h> 42#endif 43#endif 44 45#include "nolibc-test-linkage.h" 46 47/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */ 48#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2))) 49#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1) 50 51/* will be used to test initialization of environ */ 52static char **test_envp; 53 54/* will be used to test initialization of argv */ 55static char **test_argv; 56 57/* will be used to test initialization of argc */ 58static int test_argc; 59 60/* will be used by some test cases as readable file, please don't write it */ 61static const char *argv0; 62 63/* will be used by constructor tests */ 64static int constructor_test_value; 65 66/* definition of a series of tests */ 67struct test { 68 const char *name; /* test name */ 69 int (*func)(int min, int max); /* handler */ 70}; 71 72#ifndef _NOLIBC_STDLIB_H 73char *itoa(int i) 74{ 75 static char buf[12]; 76 int ret; 77 78 ret = snprintf(buf, sizeof(buf), "%d", i); 79 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err"; 80} 81#endif 82 83#define CASE_ERR(err) \ 84 case err: return #err 85 86/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0, 87 * or the decimal value for less common ones. 88 */ 89static const char *errorname(int err) 90{ 91 switch (err) { 92 case 0: return "SUCCESS"; 93 CASE_ERR(EPERM); 94 CASE_ERR(ENOENT); 95 CASE_ERR(ESRCH); 96 CASE_ERR(EINTR); 97 CASE_ERR(EIO); 98 CASE_ERR(ENXIO); 99 CASE_ERR(E2BIG); 100 CASE_ERR(ENOEXEC); 101 CASE_ERR(EBADF); 102 CASE_ERR(ECHILD); 103 CASE_ERR(EAGAIN); 104 CASE_ERR(ENOMEM); 105 CASE_ERR(EACCES); 106 CASE_ERR(EFAULT); 107 CASE_ERR(ENOTBLK); 108 CASE_ERR(EBUSY); 109 CASE_ERR(EEXIST); 110 CASE_ERR(EXDEV); 111 CASE_ERR(ENODEV); 112 CASE_ERR(ENOTDIR); 113 CASE_ERR(EISDIR); 114 CASE_ERR(EINVAL); 115 CASE_ERR(ENFILE); 116 CASE_ERR(EMFILE); 117 CASE_ERR(ENOTTY); 118 CASE_ERR(ETXTBSY); 119 CASE_ERR(EFBIG); 120 CASE_ERR(ENOSPC); 121 CASE_ERR(ESPIPE); 122 CASE_ERR(EROFS); 123 CASE_ERR(EMLINK); 124 CASE_ERR(EPIPE); 125 CASE_ERR(EDOM); 126 CASE_ERR(ERANGE); 127 CASE_ERR(ENOSYS); 128 CASE_ERR(EOVERFLOW); 129 default: 130 return itoa(err); 131 } 132} 133 134static void align_result(size_t llen) 135{ 136 const size_t align = 64; 137 char buf[align]; 138 size_t n; 139 140 if (llen >= align) 141 return; 142 143 n = align - llen; 144 memset(buf, ' ', n); 145 buf[n] = '\0'; 146 fputs(buf, stdout); 147} 148 149enum RESULT { 150 OK, 151 FAIL, 152 SKIPPED, 153}; 154 155static void result(int llen, enum RESULT r) 156{ 157 const char *msg; 158 159 if (r == OK) 160 msg = " [OK]"; 161 else if (r == SKIPPED) 162 msg = "[SKIPPED]"; 163 else 164 msg = " [FAIL]"; 165 166 align_result(llen); 167 puts(msg); 168} 169 170/* The tests below are intended to be used by the macroes, which evaluate 171 * expression <expr>, print the status to stdout, and update the "ret" 172 * variable to count failures. The functions themselves return the number 173 * of failures, thus either 0 or 1. 174 */ 175 176#define EXPECT_ZR(cond, expr) \ 177 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0) 178 179static __attribute__((unused)) 180int expect_zr(int expr, int llen) 181{ 182 int ret = !(expr == 0); 183 184 llen += printf(" = %d ", expr); 185 result(llen, ret ? FAIL : OK); 186 return ret; 187} 188 189 190#define EXPECT_NZ(cond, expr, val) \ 191 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0) 192 193static __attribute__((unused)) 194int expect_nz(int expr, int llen) 195{ 196 int ret = !(expr != 0); 197 198 llen += printf(" = %d ", expr); 199 result(llen, ret ? FAIL : OK); 200 return ret; 201} 202 203 204#define EXPECT_EQ(cond, expr, val) \ 205 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0) 206 207static __attribute__((unused)) 208int expect_eq(uint64_t expr, int llen, uint64_t val) 209{ 210 int ret = !(expr == val); 211 212 llen += printf(" = %lld ", (long long)expr); 213 result(llen, ret ? FAIL : OK); 214 return ret; 215} 216 217 218#define EXPECT_NE(cond, expr, val) \ 219 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0) 220 221static __attribute__((unused)) 222int expect_ne(int expr, int llen, int val) 223{ 224 int ret = !(expr != val); 225 226 llen += printf(" = %d ", expr); 227 result(llen, ret ? FAIL : OK); 228 return ret; 229} 230 231 232#define EXPECT_GE(cond, expr, val) \ 233 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0) 234 235static __attribute__((unused)) 236int expect_ge(int expr, int llen, int val) 237{ 238 int ret = !(expr >= val); 239 240 llen += printf(" = %d ", expr); 241 result(llen, ret ? FAIL : OK); 242 return ret; 243} 244 245 246#define EXPECT_GT(cond, expr, val) \ 247 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0) 248 249static __attribute__((unused)) 250int expect_gt(int expr, int llen, int val) 251{ 252 int ret = !(expr > val); 253 254 llen += printf(" = %d ", expr); 255 result(llen, ret ? FAIL : OK); 256 return ret; 257} 258 259 260#define EXPECT_LE(cond, expr, val) \ 261 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0) 262 263static __attribute__((unused)) 264int expect_le(int expr, int llen, int val) 265{ 266 int ret = !(expr <= val); 267 268 llen += printf(" = %d ", expr); 269 result(llen, ret ? FAIL : OK); 270 return ret; 271} 272 273 274#define EXPECT_LT(cond, expr, val) \ 275 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0) 276 277static __attribute__((unused)) 278int expect_lt(int expr, int llen, int val) 279{ 280 int ret = !(expr < val); 281 282 llen += printf(" = %d ", expr); 283 result(llen, ret ? FAIL : OK); 284 return ret; 285} 286 287 288#define EXPECT_SYSZR(cond, expr) \ 289 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0) 290 291static __attribute__((unused)) 292int expect_syszr(int expr, int llen) 293{ 294 int ret = 0; 295 296 if (expr) { 297 ret = 1; 298 llen += printf(" = %d %s ", expr, errorname(errno)); 299 result(llen, FAIL); 300 } else { 301 llen += printf(" = %d ", expr); 302 result(llen, OK); 303 } 304 return ret; 305} 306 307 308#define EXPECT_SYSEQ(cond, expr, val) \ 309 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0) 310 311static __attribute__((unused)) 312int expect_syseq(int expr, int llen, int val) 313{ 314 int ret = 0; 315 316 if (expr != val) { 317 ret = 1; 318 llen += printf(" = %d %s ", expr, errorname(errno)); 319 result(llen, FAIL); 320 } else { 321 llen += printf(" = %d ", expr); 322 result(llen, OK); 323 } 324 return ret; 325} 326 327 328#define EXPECT_SYSNE(cond, expr, val) \ 329 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0) 330 331static __attribute__((unused)) 332int expect_sysne(int expr, int llen, int val) 333{ 334 int ret = 0; 335 336 if (expr == val) { 337 ret = 1; 338 llen += printf(" = %d %s ", expr, errorname(errno)); 339 result(llen, FAIL); 340 } else { 341 llen += printf(" = %d ", expr); 342 result(llen, OK); 343 } 344 return ret; 345} 346 347 348#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \ 349 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) 350 351#define EXPECT_SYSER(cond, expr, expret, experr) \ 352 EXPECT_SYSER2(cond, expr, expret, experr, 0) 353 354static __attribute__((unused)) 355int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen) 356{ 357 int ret = 0; 358 int _errno = errno; 359 360 llen += printf(" = %d %s ", expr, errorname(_errno)); 361 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 362 ret = 1; 363 if (experr2 == 0) 364 llen += printf(" != (%d %s) ", expret, errorname(experr1)); 365 else 366 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2)); 367 result(llen, FAIL); 368 } else { 369 result(llen, OK); 370 } 371 return ret; 372} 373 374 375#define EXPECT_PTRZR(cond, expr) \ 376 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0) 377 378static __attribute__((unused)) 379int expect_ptrzr(const void *expr, int llen) 380{ 381 int ret = 0; 382 383 llen += printf(" = <%p> ", expr); 384 if (expr) { 385 ret = 1; 386 result(llen, FAIL); 387 } else { 388 result(llen, OK); 389 } 390 return ret; 391} 392 393 394#define EXPECT_PTRNZ(cond, expr) \ 395 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0) 396 397static __attribute__((unused)) 398int expect_ptrnz(const void *expr, int llen) 399{ 400 int ret = 0; 401 402 llen += printf(" = <%p> ", expr); 403 if (!expr) { 404 ret = 1; 405 result(llen, FAIL); 406 } else { 407 result(llen, OK); 408 } 409 return ret; 410} 411 412#define EXPECT_PTREQ(cond, expr, cmp) \ 413 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0) 414 415static __attribute__((unused)) 416int expect_ptreq(const void *expr, int llen, const void *cmp) 417{ 418 int ret = 0; 419 420 llen += printf(" = <%p> ", expr); 421 if (expr != cmp) { 422 ret = 1; 423 result(llen, FAIL); 424 } else { 425 result(llen, OK); 426 } 427 return ret; 428} 429 430#define EXPECT_PTRNE(cond, expr, cmp) \ 431 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0) 432 433static __attribute__((unused)) 434int expect_ptrne(const void *expr, int llen, const void *cmp) 435{ 436 int ret = 0; 437 438 llen += printf(" = <%p> ", expr); 439 if (expr == cmp) { 440 ret = 1; 441 result(llen, FAIL); 442 } else { 443 result(llen, OK); 444 } 445 return ret; 446} 447 448#define EXPECT_PTRGE(cond, expr, cmp) \ 449 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0) 450 451static __attribute__((unused)) 452int expect_ptrge(const void *expr, int llen, const void *cmp) 453{ 454 int ret = !(expr >= cmp); 455 456 llen += printf(" = <%p> ", expr); 457 result(llen, ret ? FAIL : OK); 458 return ret; 459} 460 461#define EXPECT_PTRGT(cond, expr, cmp) \ 462 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0) 463 464static __attribute__((unused)) 465int expect_ptrgt(const void *expr, int llen, const void *cmp) 466{ 467 int ret = !(expr > cmp); 468 469 llen += printf(" = <%p> ", expr); 470 result(llen, ret ? FAIL : OK); 471 return ret; 472} 473 474 475#define EXPECT_PTRLE(cond, expr, cmp) \ 476 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0) 477 478static __attribute__((unused)) 479int expect_ptrle(const void *expr, int llen, const void *cmp) 480{ 481 int ret = !(expr <= cmp); 482 483 llen += printf(" = <%p> ", expr); 484 result(llen, ret ? FAIL : OK); 485 return ret; 486} 487 488 489#define EXPECT_PTRLT(cond, expr, cmp) \ 490 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0) 491 492static __attribute__((unused)) 493int expect_ptrlt(const void *expr, int llen, const void *cmp) 494{ 495 int ret = !(expr < cmp); 496 497 llen += printf(" = <%p> ", expr); 498 result(llen, ret ? FAIL : OK); 499 return ret; 500} 501 502#define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \ 503 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0) 504 505#define EXPECT_PTRER(cond, expr, expret, experr) \ 506 EXPECT_PTRER2(cond, expr, expret, experr, 0) 507 508static __attribute__((unused)) 509int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen) 510{ 511 int ret = 0; 512 int _errno = errno; 513 514 llen += printf(" = <%p> %s ", expr, errorname(_errno)); 515 if (expr != expret || (_errno != experr1 && _errno != experr2)) { 516 ret = 1; 517 if (experr2 == 0) 518 llen += printf(" != (<%p> %s) ", expret, errorname(experr1)); 519 else 520 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2)); 521 result(llen, FAIL); 522 } else { 523 result(llen, OK); 524 } 525 return ret; 526} 527 528#define EXPECT_STRZR(cond, expr) \ 529 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0) 530 531static __attribute__((unused)) 532int expect_strzr(const char *expr, int llen) 533{ 534 int ret = 0; 535 536 llen += printf(" = <%s> ", expr); 537 if (expr) { 538 ret = 1; 539 result(llen, FAIL); 540 } else { 541 result(llen, OK); 542 } 543 return ret; 544} 545 546 547#define EXPECT_STRNZ(cond, expr) \ 548 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0) 549 550static __attribute__((unused)) 551int expect_strnz(const char *expr, int llen) 552{ 553 int ret = 0; 554 555 llen += printf(" = <%s> ", expr); 556 if (!expr) { 557 ret = 1; 558 result(llen, FAIL); 559 } else { 560 result(llen, OK); 561 } 562 return ret; 563} 564 565 566#define EXPECT_STREQ(cond, expr, cmp) \ 567 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0) 568 569static __attribute__((unused)) 570int expect_streq(const char *expr, int llen, const char *cmp) 571{ 572 int ret = 0; 573 574 llen += printf(" = <%s> ", expr); 575 if (strcmp(expr, cmp) != 0) { 576 ret = 1; 577 result(llen, FAIL); 578 } else { 579 result(llen, OK); 580 } 581 return ret; 582} 583 584 585#define EXPECT_STRNE(cond, expr, cmp) \ 586 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0) 587 588static __attribute__((unused)) 589int expect_strne(const char *expr, int llen, const char *cmp) 590{ 591 int ret = 0; 592 593 llen += printf(" = <%s> ", expr); 594 if (strcmp(expr, cmp) == 0) { 595 ret = 1; 596 result(llen, FAIL); 597 } else { 598 result(llen, OK); 599 } 600 return ret; 601} 602 603 604/* declare tests based on line numbers. There must be exactly one test per line. */ 605#define CASE_TEST(name) \ 606 case __LINE__: llen += printf("%d %s", test, #name); 607 608/* constructors validate that they are executed in definition order */ 609__attribute__((constructor)) 610static void constructor1(void) 611{ 612 constructor_test_value = 1; 613} 614 615__attribute__((constructor)) 616static void constructor2(void) 617{ 618 constructor_test_value *= 2; 619} 620 621int run_startup(int min, int max) 622{ 623 int test; 624 int ret = 0; 625 /* kernel at least passes HOME and TERM, shell passes more */ 626 int env_total = 2; 627 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */ 628 extern char end; 629 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end; 630 /* differ from nolibc, both glibc and musl have no global _auxv */ 631 const unsigned long *test_auxv = (void *)-1; 632#ifdef NOLIBC 633 test_auxv = _auxv; 634#endif 635 636 for (test = min; test >= 0 && test <= max; test++) { 637 int llen = 0; /* line length */ 638 639 /* avoid leaving empty lines below, this will insert holes into 640 * test numbers. 641 */ 642 switch (test + __LINE__ + 1) { 643 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break; 644 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break; 645 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break; 646 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break; 647 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break; 648 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break; 649 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break; 650 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break; 651 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break; 652 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break; 653 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break; 654 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break; 655 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break; 656 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break; 657 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break; 658 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break; 659 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break; 660 case __LINE__: 661 return ret; /* must be last */ 662 /* note: do not set any defaults so as to permit holes above */ 663 } 664 } 665 return ret; 666} 667 668 669/* used by some syscall tests below */ 670int test_getdents64(const char *dir) 671{ 672 char buffer[4096]; 673 int fd, ret; 674 int err; 675 676 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0); 677 if (ret < 0) 678 return ret; 679 680 ret = getdents64(fd, (void *)buffer, sizeof(buffer)); 681 err = errno; 682 close(fd); 683 684 errno = err; 685 return ret; 686} 687 688int test_getpagesize(void) 689{ 690 int x = getpagesize(); 691 int c; 692 693 if (x < 0) 694 return x; 695 696#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) 697 /* 698 * x86 family is always 4K page. 699 */ 700 c = (x == 4096); 701#elif defined(__aarch64__) 702 /* 703 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K 704 * which are selected at kernel compilation time. 705 */ 706 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024)); 707#else 708 /* 709 * Assuming other architectures must have at least 4K page. 710 */ 711 c = (x >= 4096); 712#endif 713 714 return !c; 715} 716 717int test_fork(void) 718{ 719 int status; 720 pid_t pid; 721 722 /* flush the printf buffer to avoid child flush it */ 723 fflush(stdout); 724 fflush(stderr); 725 726 pid = fork(); 727 728 switch (pid) { 729 case -1: 730 return 1; 731 732 case 0: 733 exit(123); 734 735 default: 736 pid = waitpid(pid, &status, 0); 737 738 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123; 739 } 740} 741 742int test_stat_timestamps(void) 743{ 744 struct stat st; 745 746 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime)) 747 return 1; 748 749 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st)) 750 return 1; 751 752 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) 753 return 1; 754 755 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) 756 return 1; 757 758 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) 759 return 1; 760 761 return 0; 762} 763 764int test_mmap_munmap(void) 765{ 766 int ret, fd, i, page_size; 767 void *mem; 768 size_t file_size, length; 769 off_t offset, pa_offset; 770 struct stat stat_buf; 771 const char * const files[] = { 772 "/dev/zero", 773 "/proc/1/exe", "/proc/self/exe", 774 argv0, 775 NULL 776 }; 777 778 page_size = getpagesize(); 779 if (page_size < 0) 780 return 1; 781 782 /* find a right file to mmap, existed and accessible */ 783 for (i = 0; files[i] != NULL; i++) { 784 ret = fd = open(files[i], O_RDONLY); 785 if (ret == -1) 786 continue; 787 else 788 break; 789 } 790 if (ret == -1) 791 return 1; 792 793 ret = stat(files[i], &stat_buf); 794 if (ret == -1) 795 goto end; 796 797 /* file size of the special /dev/zero is 0, let's assign one manually */ 798 if (i == 0) 799 file_size = 3*page_size; 800 else 801 file_size = stat_buf.st_size; 802 803 offset = file_size - 1; 804 if (offset < 0) 805 offset = 0; 806 length = file_size - offset; 807 pa_offset = offset & ~(page_size - 1); 808 809 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset); 810 if (mem == MAP_FAILED) { 811 ret = 1; 812 goto end; 813 } 814 815 ret = munmap(mem, length + offset - pa_offset); 816 817end: 818 close(fd); 819 return !!ret; 820} 821 822int test_pipe(void) 823{ 824 const char *const msg = "hello, nolibc"; 825 int pipefd[2]; 826 char buf[32]; 827 size_t len; 828 829 if (pipe(pipefd) == -1) 830 return 1; 831 832 write(pipefd[1], msg, strlen(msg)); 833 close(pipefd[1]); 834 len = read(pipefd[0], buf, sizeof(buf)); 835 close(pipefd[0]); 836 837 if (len != strlen(msg)) 838 return 1; 839 840 return !!memcmp(buf, msg, len); 841} 842 843int test_rlimit(void) 844{ 845 struct rlimit rlim = { 846 .rlim_cur = 1 << 20, 847 .rlim_max = 1 << 21, 848 }; 849 int ret; 850 851 ret = setrlimit(RLIMIT_CORE, &rlim); 852 if (ret) 853 return -1; 854 855 rlim.rlim_cur = 0; 856 rlim.rlim_max = 0; 857 858 ret = getrlimit(RLIMIT_CORE, &rlim); 859 if (ret) 860 return -1; 861 862 if (rlim.rlim_cur != 1 << 20) 863 return -1; 864 if (rlim.rlim_max != 1 << 21) 865 return -1; 866 867 return 0; 868} 869 870 871/* Run syscall tests between IDs <min> and <max>. 872 * Return 0 on success, non-zero on failure. 873 */ 874int run_syscall(int min, int max) 875{ 876 struct timeval tv; 877 struct timezone tz; 878 struct stat stat_buf; 879 int euid0; 880 int proc; 881 int test; 882 int tmp; 883 int ret = 0; 884 void *p1, *p2; 885 int has_gettid = 1; 886 887 /* <proc> indicates whether or not /proc is mounted */ 888 proc = stat("/proc", &stat_buf) == 0; 889 890 /* this will be used to skip certain tests that can't be run unprivileged */ 891 euid0 = geteuid() == 0; 892 893 /* from 2.30, glibc provides gettid() */ 894#if defined(__GLIBC_MINOR__) && defined(__GLIBC__) 895 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30); 896#endif 897 898 for (test = min; test >= 0 && test <= max; test++) { 899 int llen = 0; /* line length */ 900 901 /* avoid leaving empty lines below, this will insert holes into 902 * test numbers. 903 */ 904 switch (test + __LINE__ + 1) { 905 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break; 906 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break; 907 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break; 908 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break; 909 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break; 910 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 911 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break; 912 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break; 913 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break; 914 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break; 915 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break; 916 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break; 917 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break; 918 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break; 919 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break; 920 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break; 921 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break; 922 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break; 923 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break; 924 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break; 925 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break; 926 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break; 927 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 928 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 929 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 930 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 931 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break; 932 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break; 933 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break; 934 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; 935 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break; 936 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break; 937 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break; 938 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break; 939 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break; 940 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break; 941 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break; 942 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break; 943 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break; 944 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break; 945 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break; 946 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break; 947 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break; 948 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break; 949 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break; 950 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break; 951 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break; 952 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break; 953 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break; 954 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break; 955 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break; 956 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break; 957 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break; 958 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break; 959 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break; 960 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break; 961 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break; 962 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break; 963 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; 964 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break; 965 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break; 966 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; 967 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break; 968 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break; 969 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break; 970 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break; 971 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break; 972 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break; 973 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; 974 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; 975 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; 976 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break; 977 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break; 978 case __LINE__: 979 return ret; /* must be last */ 980 /* note: do not set any defaults so as to permit holes above */ 981 } 982 } 983 return ret; 984} 985 986int run_stdlib(int min, int max) 987{ 988 int test; 989 int ret = 0; 990 991 for (test = min; test >= 0 && test <= max; test++) { 992 int llen = 0; /* line length */ 993 994 /* avoid leaving empty lines below, this will insert holes into 995 * test numbers. 996 */ 997 switch (test + __LINE__ + 1) { 998 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break; 999 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break; 1000 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break; 1001 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break; 1002 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break; 1003 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break; 1004 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break; 1005 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break; 1006 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break; 1007 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break; 1008 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break; 1009 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break; 1010 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break; 1011 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break; 1012 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break; 1013 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break; 1014 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break; 1015 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break; 1016 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break; 1017 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; 1018 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; 1019 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; 1020 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; 1021 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; 1022 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; 1023 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; 1024 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; 1025 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; 1026 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; 1027 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; 1028 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; 1029 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; 1030 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; 1031 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; 1032 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; 1033 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; 1034 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; 1035 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; 1036 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; 1037 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; 1038 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; 1039 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; 1040 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; 1041 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break; 1042 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break; 1043 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break; 1044 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break; 1045 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break; 1046 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break; 1047 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break; 1048 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break; 1049 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break; 1050 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break; 1051 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break; 1052 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break; 1053 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break; 1054 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break; 1055 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break; 1056 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break; 1057 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break; 1058 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break; 1059 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break; 1060 1061 case __LINE__: 1062 return ret; /* must be last */ 1063 /* note: do not set any defaults so as to permit holes above */ 1064 } 1065 } 1066 return ret; 1067} 1068 1069#define EXPECT_VFPRINTF(c, expected, fmt, ...) \ 1070 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__) 1071 1072static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...) 1073{ 1074 int ret, fd; 1075 ssize_t w, r; 1076 char buf[100]; 1077 FILE *memfile; 1078 va_list args; 1079 1080 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600); 1081 if (fd == -1) { 1082 result(llen, SKIPPED); 1083 return 0; 1084 } 1085 1086 memfile = fdopen(fd, "w+"); 1087 if (!memfile) { 1088 result(llen, FAIL); 1089 return 1; 1090 } 1091 1092 va_start(args, fmt); 1093 w = vfprintf(memfile, fmt, args); 1094 va_end(args); 1095 1096 if (w != c) { 1097 llen += printf(" written(%d) != %d", (int)w, c); 1098 result(llen, FAIL); 1099 return 1; 1100 } 1101 1102 fflush(memfile); 1103 lseek(fd, 0, SEEK_SET); 1104 1105 r = read(fd, buf, sizeof(buf) - 1); 1106 1107 fclose(memfile); 1108 1109 if (r != w) { 1110 llen += printf(" written(%d) != read(%d)", (int)w, (int)r); 1111 result(llen, FAIL); 1112 return 1; 1113 } 1114 1115 buf[r] = '\0'; 1116 llen += printf(" \"%s\" = \"%s\"", expected, buf); 1117 ret = strncmp(expected, buf, c); 1118 1119 result(llen, ret ? FAIL : OK); 1120 return ret; 1121} 1122 1123static int run_vfprintf(int min, int max) 1124{ 1125 int test; 1126 int ret = 0; 1127 1128 for (test = min; test >= 0 && test <= max; test++) { 1129 int llen = 0; /* line length */ 1130 1131 /* avoid leaving empty lines below, this will insert holes into 1132 * test numbers. 1133 */ 1134 switch (test + __LINE__ + 1) { 1135 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break; 1136 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break; 1137 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break; 1138 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break; 1139 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break; 1140 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break; 1141 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break; 1142 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break; 1143 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break; 1144 case __LINE__: 1145 return ret; /* must be last */ 1146 /* note: do not set any defaults so as to permit holes above */ 1147 } 1148 } 1149 return ret; 1150} 1151 1152static int smash_stack(void) 1153{ 1154 char buf[100]; 1155 volatile char *ptr = buf; 1156 size_t i; 1157 1158 for (i = 0; i < 200; i++) 1159 ptr[i] = 'P'; 1160 1161 return 1; 1162} 1163 1164static int run_protection(int min __attribute__((unused)), 1165 int max __attribute__((unused))) 1166{ 1167 pid_t pid; 1168 int llen = 0, status; 1169 struct rlimit rlimit = { 0, 0 }; 1170 1171 llen += printf("0 -fstackprotector "); 1172 1173#if !defined(_NOLIBC_STACKPROTECTOR) 1174 llen += printf("not supported"); 1175 result(llen, SKIPPED); 1176 return 0; 1177#endif 1178 1179#if defined(_NOLIBC_STACKPROTECTOR) 1180 if (!__stack_chk_guard) { 1181 llen += printf("__stack_chk_guard not initialized"); 1182 result(llen, FAIL); 1183 return 1; 1184 } 1185#endif 1186 1187 pid = -1; 1188 pid = fork(); 1189 1190 switch (pid) { 1191 case -1: 1192 llen += printf("fork()"); 1193 result(llen, FAIL); 1194 return 1; 1195 1196 case 0: 1197 close(STDOUT_FILENO); 1198 close(STDERR_FILENO); 1199 1200 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0); 1201 setrlimit(RLIMIT_CORE, &rlimit); 1202 smash_stack(); 1203 return 1; 1204 1205 default: 1206 pid = waitpid(pid, &status, 0); 1207 1208 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) { 1209 llen += printf("waitpid()"); 1210 result(llen, FAIL); 1211 return 1; 1212 } 1213 result(llen, OK); 1214 return 0; 1215 } 1216} 1217 1218/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */ 1219int prepare(void) 1220{ 1221 struct stat stat_buf; 1222 1223 /* It's possible that /dev doesn't even exist or was not mounted, so 1224 * we'll try to create it, mount it, or create minimal entries into it. 1225 * We want at least /dev/null and /dev/console. 1226 */ 1227 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) { 1228 if (stat("/dev/console", &stat_buf) != 0 || 1229 stat("/dev/null", &stat_buf) != 0 || 1230 stat("/dev/zero", &stat_buf) != 0) { 1231 /* try devtmpfs first, otherwise fall back to manual creation */ 1232 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) { 1233 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1)); 1234 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3)); 1235 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5)); 1236 } 1237 } 1238 } 1239 1240 /* If no /dev/console was found before calling init, stdio is closed so 1241 * we need to reopen it from /dev/console. If it failed above, it will 1242 * still fail here and we cannot emit a message anyway. 1243 */ 1244 if (close(dup(1)) == -1) { 1245 int fd = open("/dev/console", O_RDWR); 1246 1247 if (fd >= 0) { 1248 if (fd != 0) 1249 dup2(fd, 0); 1250 if (fd != 1) 1251 dup2(fd, 1); 1252 if (fd != 2) 1253 dup2(fd, 2); 1254 if (fd > 2) 1255 close(fd); 1256 puts("\nSuccessfully reopened /dev/console."); 1257 } 1258 } 1259 1260 /* try to mount /proc if not mounted. Silently fail otherwise */ 1261 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) { 1262 if (stat("/proc/self", &stat_buf) != 0) { 1263 /* If not mountable, remove /proc completely to avoid misuse */ 1264 if (mount("none", "/proc", "proc", 0, 0) != 0) 1265 rmdir("/proc"); 1266 } 1267 } 1268 1269 /* some tests rely on a writable /tmp */ 1270 mkdir("/tmp", 0755); 1271 1272 return 0; 1273} 1274 1275/* This is the definition of known test names, with their functions */ 1276static const struct test test_names[] = { 1277 /* add new tests here */ 1278 { .name = "startup", .func = run_startup }, 1279 { .name = "syscall", .func = run_syscall }, 1280 { .name = "stdlib", .func = run_stdlib }, 1281 { .name = "vfprintf", .func = run_vfprintf }, 1282 { .name = "protection", .func = run_protection }, 1283 { 0 } 1284}; 1285 1286static int is_setting_valid(char *test) 1287{ 1288 int idx, len, test_len, valid = 0; 1289 char delimiter; 1290 1291 if (!test) 1292 return valid; 1293 1294 test_len = strlen(test); 1295 1296 for (idx = 0; test_names[idx].name; idx++) { 1297 len = strlen(test_names[idx].name); 1298 if (test_len < len) 1299 continue; 1300 1301 if (strncmp(test, test_names[idx].name, len) != 0) 1302 continue; 1303 1304 delimiter = test[len]; 1305 if (delimiter != ':' && delimiter != ',' && delimiter != '\0') 1306 continue; 1307 1308 valid = 1; 1309 break; 1310 } 1311 1312 return valid; 1313} 1314 1315int main(int argc, char **argv, char **envp) 1316{ 1317 int min = 0; 1318 int max = INT_MAX; 1319 int ret = 0; 1320 int err; 1321 int idx; 1322 char *test; 1323 1324 argv0 = argv[0]; 1325 test_argc = argc; 1326 test_argv = argv; 1327 test_envp = envp; 1328 1329 /* when called as init, it's possible that no console was opened, for 1330 * example if no /dev file system was provided. We'll check that fd#1 1331 * was opened, and if not we'll attempt to create and open /dev/console 1332 * and /dev/null that we'll use for later tests. 1333 */ 1334 if (getpid() == 1) 1335 prepare(); 1336 1337 /* the definition of a series of tests comes from either argv[1] or the 1338 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited 1339 * series of test names and optional ranges: 1340 * syscall:5-15[:.*],stdlib:8-10 1341 */ 1342 test = argv[1]; 1343 if (!is_setting_valid(test)) 1344 test = getenv("NOLIBC_TEST"); 1345 1346 if (is_setting_valid(test)) { 1347 char *comma, *colon, *dash, *value; 1348 1349 do { 1350 comma = strchr(test, ','); 1351 if (comma) 1352 *(comma++) = '\0'; 1353 1354 colon = strchr(test, ':'); 1355 if (colon) 1356 *(colon++) = '\0'; 1357 1358 for (idx = 0; test_names[idx].name; idx++) { 1359 if (strcmp(test, test_names[idx].name) == 0) 1360 break; 1361 } 1362 1363 if (test_names[idx].name) { 1364 /* The test was named, it will be called at least 1365 * once. We may have an optional range at <colon> 1366 * here, which defaults to the full range. 1367 */ 1368 do { 1369 min = 0; max = INT_MAX; 1370 value = colon; 1371 if (value && *value) { 1372 colon = strchr(value, ':'); 1373 if (colon) 1374 *(colon++) = '\0'; 1375 1376 dash = strchr(value, '-'); 1377 if (dash) 1378 *(dash++) = '\0'; 1379 1380 /* support :val: :min-max: :min-: :-max: */ 1381 if (*value) 1382 min = atoi(value); 1383 if (!dash) 1384 max = min; 1385 else if (*dash) 1386 max = atoi(dash); 1387 1388 value = colon; 1389 } 1390 1391 /* now's time to call the test */ 1392 printf("Running test '%s'\n", test_names[idx].name); 1393 err = test_names[idx].func(min, max); 1394 ret += err; 1395 printf("Errors during this test: %d\n\n", err); 1396 } while (colon && *colon); 1397 } else 1398 printf("Ignoring unknown test name '%s'\n", test); 1399 1400 test = comma; 1401 } while (test && *test); 1402 } else { 1403 /* no test mentioned, run everything */ 1404 for (idx = 0; test_names[idx].name; idx++) { 1405 printf("Running test '%s'\n", test_names[idx].name); 1406 err = test_names[idx].func(min, max); 1407 ret += err; 1408 printf("Errors during this test: %d\n\n", err); 1409 } 1410 } 1411 1412 printf("Total number of errors: %d\n", ret); 1413 1414 if (getpid() == 1) { 1415 /* we're running as init, there's no other process on the 1416 * system, thus likely started from a VM for a quick check. 1417 * Exiting will provoke a kernel panic that may be reported 1418 * as an error by Qemu or the hypervisor, while stopping 1419 * cleanly will often be reported as a success. This allows 1420 * to use the output of this program for bisecting kernels. 1421 */ 1422 printf("Leaving init with final status: %d\n", !!ret); 1423 if (ret == 0) 1424 reboot(RB_POWER_OFF); 1425#if defined(__x86_64__) 1426 /* QEMU started with "-device isa-debug-exit -no-reboot" will 1427 * exit with status code 2N+1 when N is written to 0x501. We 1428 * hard-code the syscall here as it's arch-dependent. 1429 */ 1430 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0) 1431 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0)); 1432 /* if it does nothing, fall back to the regular panic */ 1433#endif 1434 } 1435 1436 printf("Exiting with status %d\n", !!ret); 1437 return !!ret; 1438} 1439