1597 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2 3#define _GNU_SOURCE4#define _LARGEFILE64_SOURCE5 6/* libc-specific include files7 * The program may be built in 3 ways:8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present10 * $(CC) with default libc => NOLIBC* never defined11 */12#ifndef NOLIBC13#include <stdio.h>14#include <stdlib.h>15#include <string.h>16#ifndef _NOLIBC_STDIO_H17/* 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/utsname.h>31#include <sys/wait.h>32#include <dirent.h>33#include <errno.h>34#include <fcntl.h>35#include <poll.h>36#include <sched.h>37#include <signal.h>38#include <stdarg.h>39#include <stddef.h>40#include <stdint.h>41#include <unistd.h>42#include <limits.h>43#endif44#endif45 46#include "nolibc-test-linkage.h"47 48/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */49#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))50#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)51 52/* will be used to test initialization of environ */53static char **test_envp;54 55/* will be used to test initialization of argv */56static char **test_argv;57 58/* will be used to test initialization of argc */59static int test_argc;60 61/* will be used by some test cases as readable file, please don't write it */62static const char *argv0;63 64/* will be used by constructor tests */65static int constructor_test_value;66 67static const int is_nolibc =68#ifdef NOLIBC69 170#else71 072#endif73;74 75/* definition of a series of tests */76struct test {77 const char *name; /* test name */78 int (*func)(int min, int max); /* handler */79};80 81#ifndef _NOLIBC_STDLIB_H82char *itoa(int i)83{84 static char buf[12];85 int ret;86 87 ret = snprintf(buf, sizeof(buf), "%d", i);88 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";89}90#endif91 92#define CASE_ERR(err) \93 case err: return #err94 95/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,96 * or the decimal value for less common ones.97 */98static const char *errorname(int err)99{100 switch (err) {101 case 0: return "SUCCESS";102 CASE_ERR(EPERM);103 CASE_ERR(ENOENT);104 CASE_ERR(ESRCH);105 CASE_ERR(EINTR);106 CASE_ERR(EIO);107 CASE_ERR(ENXIO);108 CASE_ERR(E2BIG);109 CASE_ERR(ENOEXEC);110 CASE_ERR(EBADF);111 CASE_ERR(ECHILD);112 CASE_ERR(EAGAIN);113 CASE_ERR(ENOMEM);114 CASE_ERR(EACCES);115 CASE_ERR(EFAULT);116 CASE_ERR(ENOTBLK);117 CASE_ERR(EBUSY);118 CASE_ERR(EEXIST);119 CASE_ERR(EXDEV);120 CASE_ERR(ENODEV);121 CASE_ERR(ENOTDIR);122 CASE_ERR(EISDIR);123 CASE_ERR(EINVAL);124 CASE_ERR(ENFILE);125 CASE_ERR(EMFILE);126 CASE_ERR(ENOTTY);127 CASE_ERR(ETXTBSY);128 CASE_ERR(EFBIG);129 CASE_ERR(ENOSPC);130 CASE_ERR(ESPIPE);131 CASE_ERR(EROFS);132 CASE_ERR(EMLINK);133 CASE_ERR(EPIPE);134 CASE_ERR(EDOM);135 CASE_ERR(ERANGE);136 CASE_ERR(ENOSYS);137 CASE_ERR(EOVERFLOW);138 default:139 return itoa(err);140 }141}142 143static void align_result(size_t llen)144{145 const size_t align = 64;146 char buf[align];147 size_t n;148 149 if (llen >= align)150 return;151 152 n = align - llen;153 memset(buf, ' ', n);154 buf[n] = '\0';155 fputs(buf, stdout);156}157 158enum RESULT {159 OK,160 FAIL,161 SKIPPED,162};163 164static void result(int llen, enum RESULT r)165{166 const char *msg;167 168 if (r == OK)169 msg = " [OK]";170 else if (r == SKIPPED)171 msg = "[SKIPPED]";172 else173 msg = " [FAIL]";174 175 align_result(llen);176 puts(msg);177}178 179/* The tests below are intended to be used by the macroes, which evaluate180 * expression <expr>, print the status to stdout, and update the "ret"181 * variable to count failures. The functions themselves return the number182 * of failures, thus either 0 or 1.183 */184 185#define EXPECT_ZR(cond, expr) \186 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)187 188static __attribute__((unused))189int expect_zr(int expr, int llen)190{191 int ret = !(expr == 0);192 193 llen += printf(" = %d ", expr);194 result(llen, ret ? FAIL : OK);195 return ret;196}197 198 199#define EXPECT_NZ(cond, expr, val) \200 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)201 202static __attribute__((unused))203int expect_nz(int expr, int llen)204{205 int ret = !(expr != 0);206 207 llen += printf(" = %d ", expr);208 result(llen, ret ? FAIL : OK);209 return ret;210}211 212 213#define EXPECT_EQ(cond, expr, val) \214 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)215 216static __attribute__((unused))217int expect_eq(uint64_t expr, int llen, uint64_t val)218{219 int ret = !(expr == val);220 221 llen += printf(" = %lld ", (long long)expr);222 result(llen, ret ? FAIL : OK);223 return ret;224}225 226 227#define EXPECT_NE(cond, expr, val) \228 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)229 230static __attribute__((unused))231int expect_ne(int expr, int llen, int val)232{233 int ret = !(expr != val);234 235 llen += printf(" = %d ", expr);236 result(llen, ret ? FAIL : OK);237 return ret;238}239 240 241#define EXPECT_GE(cond, expr, val) \242 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)243 244static __attribute__((unused))245int expect_ge(int expr, int llen, int val)246{247 int ret = !(expr >= val);248 249 llen += printf(" = %d ", expr);250 result(llen, ret ? FAIL : OK);251 return ret;252}253 254 255#define EXPECT_GT(cond, expr, val) \256 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)257 258static __attribute__((unused))259int expect_gt(int expr, int llen, int val)260{261 int ret = !(expr > val);262 263 llen += printf(" = %d ", expr);264 result(llen, ret ? FAIL : OK);265 return ret;266}267 268 269#define EXPECT_LE(cond, expr, val) \270 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)271 272static __attribute__((unused))273int expect_le(int expr, int llen, int val)274{275 int ret = !(expr <= val);276 277 llen += printf(" = %d ", expr);278 result(llen, ret ? FAIL : OK);279 return ret;280}281 282 283#define EXPECT_LT(cond, expr, val) \284 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)285 286static __attribute__((unused))287int expect_lt(int expr, int llen, int val)288{289 int ret = !(expr < val);290 291 llen += printf(" = %d ", expr);292 result(llen, ret ? FAIL : OK);293 return ret;294}295 296 297#define EXPECT_SYSZR(cond, expr) \298 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)299 300static __attribute__((unused))301int expect_syszr(int expr, int llen)302{303 int ret = 0;304 305 if (expr) {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_SYSEQ(cond, expr, val) \318 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)319 320static __attribute__((unused))321int expect_syseq(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_SYSNE(cond, expr, val) \338 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)339 340static __attribute__((unused))341int expect_sysne(int expr, int llen, int val)342{343 int ret = 0;344 345 if (expr == val) {346 ret = 1;347 llen += printf(" = %d %s ", expr, errorname(errno));348 result(llen, FAIL);349 } else {350 llen += printf(" = %d ", expr);351 result(llen, OK);352 }353 return ret;354}355 356 357#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \358 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)359 360#define EXPECT_SYSER(cond, expr, expret, experr) \361 EXPECT_SYSER2(cond, expr, expret, experr, 0)362 363static __attribute__((unused))364int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)365{366 int ret = 0;367 int _errno = errno;368 369 llen += printf(" = %d %s ", expr, errorname(_errno));370 if (expr != expret || (_errno != experr1 && _errno != experr2)) {371 ret = 1;372 if (experr2 == 0)373 llen += printf(" != (%d %s) ", expret, errorname(experr1));374 else375 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));376 result(llen, FAIL);377 } else {378 result(llen, OK);379 }380 return ret;381}382 383 384#define EXPECT_PTRZR(cond, expr) \385 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)386 387static __attribute__((unused))388int expect_ptrzr(const void *expr, int llen)389{390 int ret = 0;391 392 llen += printf(" = <%p> ", expr);393 if (expr) {394 ret = 1;395 result(llen, FAIL);396 } else {397 result(llen, OK);398 }399 return ret;400}401 402 403#define EXPECT_PTRNZ(cond, expr) \404 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)405 406static __attribute__((unused))407int expect_ptrnz(const void *expr, int llen)408{409 int ret = 0;410 411 llen += printf(" = <%p> ", expr);412 if (!expr) {413 ret = 1;414 result(llen, FAIL);415 } else {416 result(llen, OK);417 }418 return ret;419}420 421#define EXPECT_PTREQ(cond, expr, cmp) \422 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)423 424static __attribute__((unused))425int expect_ptreq(const void *expr, int llen, const void *cmp)426{427 int ret = 0;428 429 llen += printf(" = <%p> ", expr);430 if (expr != cmp) {431 ret = 1;432 result(llen, FAIL);433 } else {434 result(llen, OK);435 }436 return ret;437}438 439#define EXPECT_PTRNE(cond, expr, cmp) \440 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)441 442static __attribute__((unused))443int expect_ptrne(const void *expr, int llen, const void *cmp)444{445 int ret = 0;446 447 llen += printf(" = <%p> ", expr);448 if (expr == cmp) {449 ret = 1;450 result(llen, FAIL);451 } else {452 result(llen, OK);453 }454 return ret;455}456 457#define EXPECT_PTRGE(cond, expr, cmp) \458 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)459 460static __attribute__((unused))461int expect_ptrge(const void *expr, int llen, const void *cmp)462{463 int ret = !(expr >= cmp);464 465 llen += printf(" = <%p> ", expr);466 result(llen, ret ? FAIL : OK);467 return ret;468}469 470#define EXPECT_PTRGT(cond, expr, cmp) \471 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)472 473static __attribute__((unused))474int expect_ptrgt(const void *expr, int llen, const void *cmp)475{476 int ret = !(expr > cmp);477 478 llen += printf(" = <%p> ", expr);479 result(llen, ret ? FAIL : OK);480 return ret;481}482 483 484#define EXPECT_PTRLE(cond, expr, cmp) \485 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)486 487static __attribute__((unused))488int expect_ptrle(const void *expr, int llen, const void *cmp)489{490 int ret = !(expr <= cmp);491 492 llen += printf(" = <%p> ", expr);493 result(llen, ret ? FAIL : OK);494 return ret;495}496 497 498#define EXPECT_PTRLT(cond, expr, cmp) \499 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)500 501static __attribute__((unused))502int expect_ptrlt(const void *expr, int llen, const void *cmp)503{504 int ret = !(expr < cmp);505 506 llen += printf(" = <%p> ", expr);507 result(llen, ret ? FAIL : OK);508 return ret;509}510 511#define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \512 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)513 514#define EXPECT_PTRER(cond, expr, expret, experr) \515 EXPECT_PTRER2(cond, expr, expret, experr, 0)516 517static __attribute__((unused))518int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)519{520 int ret = 0;521 int _errno = errno;522 523 llen += printf(" = <%p> %s ", expr, errorname(_errno));524 if (expr != expret || (_errno != experr1 && _errno != experr2)) {525 ret = 1;526 if (experr2 == 0)527 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));528 else529 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));530 result(llen, FAIL);531 } else {532 result(llen, OK);533 }534 return ret;535}536 537#define EXPECT_STRZR(cond, expr) \538 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)539 540static __attribute__((unused))541int expect_strzr(const char *expr, int llen)542{543 int ret = 0;544 545 llen += printf(" = <%s> ", expr ? expr : "(null)");546 if (expr) {547 ret = 1;548 result(llen, FAIL);549 } else {550 result(llen, OK);551 }552 return ret;553}554 555 556#define EXPECT_STRNZ(cond, expr) \557 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)558 559static __attribute__((unused))560int expect_strnz(const char *expr, int llen)561{562 int ret = 0;563 564 llen += printf(" = <%s> ", expr ? expr : "(null)");565 if (!expr) {566 ret = 1;567 result(llen, FAIL);568 } else {569 result(llen, OK);570 }571 return ret;572}573 574 575#define EXPECT_STREQ(cond, expr, cmp) \576 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)577 578static __attribute__((unused))579int expect_streq(const char *expr, int llen, const char *cmp)580{581 int ret = 0;582 583 llen += printf(" = <%s> ", expr);584 if (strcmp(expr, cmp) != 0) {585 ret = 1;586 result(llen, FAIL);587 } else {588 result(llen, OK);589 }590 return ret;591}592 593 594#define EXPECT_STRNE(cond, expr, cmp) \595 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)596 597static __attribute__((unused))598int expect_strne(const char *expr, int llen, const char *cmp)599{600 int ret = 0;601 602 llen += printf(" = <%s> ", expr);603 if (strcmp(expr, cmp) == 0) {604 ret = 1;605 result(llen, FAIL);606 } else {607 result(llen, OK);608 }609 return ret;610}611 612#define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \613 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)614 615static __attribute__((unused))616int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)617{618 llen += printf(" = %lu <%s> ", (unsigned long)expr, buf);619 if (strcmp(buf, cmp) != 0) {620 result(llen, FAIL);621 return 1;622 }623 if (expr != val) {624 result(llen, FAIL);625 return 1;626 }627 628 result(llen, OK);629 return 0;630}631 632#define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \633 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0)634 635static __attribute__((unused))636int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno)637{638 char *endptr;639 int actual_errno, actual_chars;640 intmax_t r;641 642 errno = 0;643 if (func == strtol) {644 r = strtol(input, &endptr, base);645 } else if (func == strtoul) {646 r = strtoul(input, &endptr, base);647 } else {648 result(llen, FAIL);649 return 1;650 }651 actual_errno = errno;652 actual_chars = endptr - input;653 654 llen += printf(" %lld = %lld", (long long)expected, (long long)r);655 if (r != expected) {656 result(llen, FAIL);657 return 1;658 }659 if (expected_chars == -1) {660 if (*endptr != '\0') {661 result(llen, FAIL);662 return 1;663 }664 } else if (expected_chars != actual_chars) {665 result(llen, FAIL);666 return 1;667 }668 if (actual_errno != expected_errno) {669 result(llen, FAIL);670 return 1;671 }672 673 result(llen, OK);674 return 0;675}676 677/* declare tests based on line numbers. There must be exactly one test per line. */678#define CASE_TEST(name) \679 case __LINE__: llen += printf("%d %s", test, #name);680 681/* constructors validate that they are executed in definition order */682__attribute__((constructor))683static void constructor1(void)684{685 constructor_test_value = 1;686}687 688__attribute__((constructor))689static void constructor2(int argc, char **argv, char **envp)690{691 if (argc && argv && envp)692 constructor_test_value *= 2;693}694 695int run_startup(int min, int max)696{697 int test;698 int ret = 0;699 /* kernel at least passes HOME and TERM, shell passes more */700 int env_total = 2;701 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */702 extern char end;703 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;704 /* differ from nolibc, both glibc and musl have no global _auxv */705 const unsigned long *test_auxv = (void *)-1;706#ifdef NOLIBC707 test_auxv = _auxv;708#endif709 710 for (test = min; test >= 0 && test <= max; test++) {711 int llen = 0; /* line length */712 713 /* avoid leaving empty lines below, this will insert holes into714 * test numbers.715 */716 switch (test + __LINE__ + 1) {717 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;718 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;719 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;720 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;721 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;722 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;723 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;724 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;725 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;726 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;727 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;728 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;729 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;730 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;731 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;732 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;733 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;734 case __LINE__:735 return ret; /* must be last */736 /* note: do not set any defaults so as to permit holes above */737 }738 }739 return ret;740}741 742 743/* used by some syscall tests below */744int test_getdents64(const char *dir)745{746 char buffer[4096];747 int fd, ret;748 int err;749 750 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);751 if (ret < 0)752 return ret;753 754 ret = getdents64(fd, (void *)buffer, sizeof(buffer));755 err = errno;756 close(fd);757 758 errno = err;759 return ret;760}761 762int test_getpagesize(void)763{764 int x = getpagesize();765 int c;766 767 if (x < 0)768 return x;769 770#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)771 /*772 * x86 family is always 4K page.773 */774 c = (x == 4096);775#elif defined(__aarch64__)776 /*777 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K778 * which are selected at kernel compilation time.779 */780 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));781#else782 /*783 * Assuming other architectures must have at least 4K page.784 */785 c = (x >= 4096);786#endif787 788 return !c;789}790 791int test_fork(void)792{793 int status;794 pid_t pid;795 796 /* flush the printf buffer to avoid child flush it */797 fflush(stdout);798 fflush(stderr);799 800 pid = fork();801 802 switch (pid) {803 case -1:804 return 1;805 806 case 0:807 exit(123);808 809 default:810 pid = waitpid(pid, &status, 0);811 812 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;813 }814}815 816int test_stat_timestamps(void)817{818 struct stat st;819 820 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))821 return 1;822 823 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))824 return 1;825 826 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)827 return 1;828 829 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)830 return 1;831 832 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)833 return 1;834 835 return 0;836}837 838int test_uname(void)839{840 struct utsname buf;841 char osrelease[sizeof(buf.release)];842 ssize_t r;843 int fd;844 845 memset(&buf.domainname, 'P', sizeof(buf.domainname));846 847 if (uname(&buf))848 return 1;849 850 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))851 return 1;852 853 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);854 if (fd == -1)855 return 1;856 857 r = read(fd, osrelease, sizeof(osrelease));858 if (r == -1)859 return 1;860 861 close(fd);862 863 if (osrelease[r - 1] == '\n')864 r--;865 866 /* Validate one of the later fields to ensure field sizes are correct */867 if (strncmp(osrelease, buf.release, r))868 return 1;869 870 /* Ensure the field domainname is set, it is missing from struct old_utsname */871 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))872 return 1;873 874 return 0;875}876 877int test_mmap_munmap(void)878{879 int ret, fd, i, page_size;880 void *mem;881 size_t file_size, length;882 off_t offset, pa_offset;883 struct stat stat_buf;884 const char * const files[] = {885 "/dev/zero",886 "/proc/1/exe", "/proc/self/exe",887 argv0,888 NULL889 };890 891 page_size = getpagesize();892 if (page_size < 0)893 return 1;894 895 /* find a right file to mmap, existed and accessible */896 for (i = 0; files[i] != NULL; i++) {897 ret = fd = open(files[i], O_RDONLY);898 if (ret == -1)899 continue;900 else901 break;902 }903 if (ret == -1)904 return 1;905 906 ret = stat(files[i], &stat_buf);907 if (ret == -1)908 goto end;909 910 /* file size of the special /dev/zero is 0, let's assign one manually */911 if (i == 0)912 file_size = 3*page_size;913 else914 file_size = stat_buf.st_size;915 916 offset = file_size - 1;917 if (offset < 0)918 offset = 0;919 length = file_size - offset;920 pa_offset = offset & ~(page_size - 1);921 922 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);923 if (mem == MAP_FAILED) {924 ret = 1;925 goto end;926 }927 928 ret = munmap(mem, length + offset - pa_offset);929 930end:931 close(fd);932 return !!ret;933}934 935int test_pipe(void)936{937 const char *const msg = "hello, nolibc";938 int pipefd[2];939 char buf[32];940 size_t len;941 942 if (pipe(pipefd) == -1)943 return 1;944 945 write(pipefd[1], msg, strlen(msg));946 close(pipefd[1]);947 len = read(pipefd[0], buf, sizeof(buf));948 close(pipefd[0]);949 950 if (len != strlen(msg))951 return 1;952 953 return !!memcmp(buf, msg, len);954}955 956int test_rlimit(void)957{958 struct rlimit rlim = {959 .rlim_cur = 1 << 20,960 .rlim_max = 1 << 21,961 };962 int ret;963 964 ret = setrlimit(RLIMIT_CORE, &rlim);965 if (ret)966 return -1;967 968 rlim.rlim_cur = 0;969 rlim.rlim_max = 0;970 971 ret = getrlimit(RLIMIT_CORE, &rlim);972 if (ret)973 return -1;974 975 if (rlim.rlim_cur != 1 << 20)976 return -1;977 if (rlim.rlim_max != 1 << 21)978 return -1;979 980 return 0;981}982 983 984/* Run syscall tests between IDs <min> and <max>.985 * Return 0 on success, non-zero on failure.986 */987int run_syscall(int min, int max)988{989 struct timeval tv;990 struct timezone tz;991 struct stat stat_buf;992 int euid0;993 int proc;994 int test;995 int tmp;996 int ret = 0;997 void *p1, *p2;998 int has_gettid = 1;999 int has_brk;1000 1001 /* <proc> indicates whether or not /proc is mounted */1002 proc = stat("/proc", &stat_buf) == 0;1003 1004 /* this will be used to skip certain tests that can't be run unprivileged */1005 euid0 = geteuid() == 0;1006 1007 /* from 2.30, glibc provides gettid() */1008#if defined(__GLIBC_MINOR__) && defined(__GLIBC__)1009 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);1010#endif1011 1012 /* on musl setting brk()/sbrk() always fails */1013 has_brk = brk(0) == 0;1014 1015 for (test = min; test >= 0 && test <= max; test++) {1016 int llen = 0; /* line length */1017 1018 /* avoid leaving empty lines below, this will insert holes into1019 * test numbers.1020 */1021 switch (test + __LINE__ + 1) {1022 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;1023 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;1024 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;1025 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;1026 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;1027 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;1028 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;1029 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;1030 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;1031 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;1032 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;1033 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;1034 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;1035 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;1036 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;1037 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;1038 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;1039 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;1040 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;1041 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;1042 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;1043 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;1044 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;1045 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;1046 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;1047 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;1048 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;1049 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;1050 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;1051 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;1052 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;1053 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;1054 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;1055 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;1056 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;1057 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;1058 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;1059 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;1060 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;1061 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;1062 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;1063 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;1064 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;1065 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;1066 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;1067 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;1068 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;1069 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;1070 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;1071 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;1072 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;1073 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;1074 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;1075 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;1076 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;1077 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;1078 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;1079 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;1080 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;1081 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;1082 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;1083 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;1084 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;1085 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;1086 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;1087 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;1088 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;1089 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;1090 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;1091 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;1092 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;1093 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;1094 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;1095 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;1096 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;1097 case __LINE__:1098 return ret; /* must be last */1099 /* note: do not set any defaults so as to permit holes above */1100 }1101 }1102 return ret;1103}1104 1105int run_stdlib(int min, int max)1106{1107 int test;1108 int ret = 0;1109 1110 for (test = min; test >= 0 && test <= max; test++) {1111 int llen = 0; /* line length */1112 1113 /* For functions that take a long buffer, like strlcat()1114 * Add some more chars after the \0, to test functions that overwrite the buffer set1115 * the \0 at the exact right position.1116 */1117 char buf[10] = "test123456";1118 buf[4] = '\0';1119 1120 1121 /* avoid leaving empty lines below, this will insert holes into1122 * test numbers.1123 */1124 switch (test + __LINE__ + 1) {1125 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;1126 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;1127 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;1128 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;1129 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;1130 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;1131 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;1132 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;1133 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;1134 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;1135 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;1136 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;1137 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;1138 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;1139 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;1140 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;1141 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;1142 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;1143 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;1144 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;1145 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;1146 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;1147 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;1148 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;1149 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;1150 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;1151 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;1152 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;1153 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;1154 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;1155 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;1156 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;1157 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;1158 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;1159 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;1160 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;1161 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;1162 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;1163 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;1164 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;1165 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;1166 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;1167 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;1168 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;1169 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;1170 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;1171 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;1172 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;1173 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;1174 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;1175 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;1176 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;1177 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;1178 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;1179 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;1180 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;1181 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;1182 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;1183 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;1184 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;1185 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;1186 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;1187 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;1188 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;1189 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;1190 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;1191 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;1192 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;1193 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;1194 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;1195 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;1196 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;1197 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;1198 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;1199 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;1200 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;1201 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;1202 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;1203 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;1204 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;1205 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;1206 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;1207 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;1208 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;1209 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;1210 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;1211 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;1212 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;1213 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;1214 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;1215 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;1216 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;1217 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;1218 1219 case __LINE__:1220 return ret; /* must be last */1221 /* note: do not set any defaults so as to permit holes above */1222 }1223 }1224 return ret;1225}1226 1227#define EXPECT_VFPRINTF(c, expected, fmt, ...) \1228 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)1229 1230static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)1231{1232 int ret, fd;1233 ssize_t w, r;1234 char buf[100];1235 FILE *memfile;1236 va_list args;1237 1238 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);1239 if (fd == -1) {1240 result(llen, SKIPPED);1241 return 0;1242 }1243 1244 memfile = fdopen(fd, "w+");1245 if (!memfile) {1246 result(llen, FAIL);1247 return 1;1248 }1249 1250 va_start(args, fmt);1251 w = vfprintf(memfile, fmt, args);1252 va_end(args);1253 1254 if (w != c) {1255 llen += printf(" written(%d) != %d", (int)w, c);1256 result(llen, FAIL);1257 return 1;1258 }1259 1260 fflush(memfile);1261 lseek(fd, 0, SEEK_SET);1262 1263 r = read(fd, buf, sizeof(buf) - 1);1264 1265 fclose(memfile);1266 1267 if (r != w) {1268 llen += printf(" written(%d) != read(%d)", (int)w, (int)r);1269 result(llen, FAIL);1270 return 1;1271 }1272 1273 buf[r] = '\0';1274 llen += printf(" \"%s\" = \"%s\"", expected, buf);1275 ret = strncmp(expected, buf, c);1276 1277 result(llen, ret ? FAIL : OK);1278 return ret;1279}1280 1281static int run_vfprintf(int min, int max)1282{1283 int test;1284 int ret = 0;1285 1286 for (test = min; test >= 0 && test <= max; test++) {1287 int llen = 0; /* line length */1288 1289 /* avoid leaving empty lines below, this will insert holes into1290 * test numbers.1291 */1292 switch (test + __LINE__ + 1) {1293 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;1294 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;1295 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;1296 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;1297 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;1298 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;1299 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;1300 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;1301 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;1302 case __LINE__:1303 return ret; /* must be last */1304 /* note: do not set any defaults so as to permit holes above */1305 }1306 }1307 return ret;1308}1309 1310static int smash_stack(void)1311{1312 char buf[100];1313 volatile char *ptr = buf;1314 size_t i;1315 1316 for (i = 0; i < 200; i++)1317 ptr[i] = 'P';1318 1319 return 1;1320}1321 1322static int run_protection(int min __attribute__((unused)),1323 int max __attribute__((unused)))1324{1325 pid_t pid;1326 int llen = 0, status;1327 struct rlimit rlimit = { 0, 0 };1328 1329 llen += printf("0 -fstackprotector ");1330 1331#if !defined(_NOLIBC_STACKPROTECTOR)1332 llen += printf("not supported");1333 result(llen, SKIPPED);1334 return 0;1335#endif1336 1337#if defined(_NOLIBC_STACKPROTECTOR)1338 if (!__stack_chk_guard) {1339 llen += printf("__stack_chk_guard not initialized");1340 result(llen, FAIL);1341 return 1;1342 }1343#endif1344 1345 pid = -1;1346 pid = fork();1347 1348 switch (pid) {1349 case -1:1350 llen += printf("fork()");1351 result(llen, FAIL);1352 return 1;1353 1354 case 0:1355 close(STDOUT_FILENO);1356 close(STDERR_FILENO);1357 1358 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);1359 setrlimit(RLIMIT_CORE, &rlimit);1360 smash_stack();1361 return 1;1362 1363 default:1364 pid = waitpid(pid, &status, 0);1365 1366 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {1367 llen += printf("waitpid()");1368 result(llen, FAIL);1369 return 1;1370 }1371 result(llen, OK);1372 return 0;1373 }1374}1375 1376/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */1377int prepare(void)1378{1379 struct stat stat_buf;1380 1381 /* It's possible that /dev doesn't even exist or was not mounted, so1382 * we'll try to create it, mount it, or create minimal entries into it.1383 * We want at least /dev/null and /dev/console.1384 */1385 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {1386 if (stat("/dev/console", &stat_buf) != 0 ||1387 stat("/dev/null", &stat_buf) != 0 ||1388 stat("/dev/zero", &stat_buf) != 0) {1389 /* try devtmpfs first, otherwise fall back to manual creation */1390 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {1391 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));1392 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));1393 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));1394 }1395 }1396 }1397 1398 /* If no /dev/console was found before calling init, stdio is closed so1399 * we need to reopen it from /dev/console. If it failed above, it will1400 * still fail here and we cannot emit a message anyway.1401 */1402 if (close(dup(1)) == -1) {1403 int fd = open("/dev/console", O_RDWR);1404 1405 if (fd >= 0) {1406 if (fd != 0)1407 dup2(fd, 0);1408 if (fd != 1)1409 dup2(fd, 1);1410 if (fd != 2)1411 dup2(fd, 2);1412 if (fd > 2)1413 close(fd);1414 puts("\nSuccessfully reopened /dev/console.");1415 }1416 }1417 1418 /* try to mount /proc if not mounted. Silently fail otherwise */1419 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {1420 if (stat("/proc/self", &stat_buf) != 0) {1421 /* If not mountable, remove /proc completely to avoid misuse */1422 if (mount("none", "/proc", "proc", 0, 0) != 0)1423 rmdir("/proc");1424 }1425 }1426 1427 /* some tests rely on a writable /tmp */1428 mkdir("/tmp", 0755);1429 1430 return 0;1431}1432 1433/* This is the definition of known test names, with their functions */1434static const struct test test_names[] = {1435 /* add new tests here */1436 { .name = "startup", .func = run_startup },1437 { .name = "syscall", .func = run_syscall },1438 { .name = "stdlib", .func = run_stdlib },1439 { .name = "vfprintf", .func = run_vfprintf },1440 { .name = "protection", .func = run_protection },1441 { 0 }1442};1443 1444static int is_setting_valid(char *test)1445{1446 int idx, len, test_len, valid = 0;1447 char delimiter;1448 1449 if (!test)1450 return valid;1451 1452 test_len = strlen(test);1453 1454 for (idx = 0; test_names[idx].name; idx++) {1455 len = strlen(test_names[idx].name);1456 if (test_len < len)1457 continue;1458 1459 if (strncmp(test, test_names[idx].name, len) != 0)1460 continue;1461 1462 delimiter = test[len];1463 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')1464 continue;1465 1466 valid = 1;1467 break;1468 }1469 1470 return valid;1471}1472 1473int main(int argc, char **argv, char **envp)1474{1475 int min = 0;1476 int max = INT_MAX;1477 int ret = 0;1478 int err;1479 int idx;1480 char *test;1481 1482 argv0 = argv[0];1483 test_argc = argc;1484 test_argv = argv;1485 test_envp = envp;1486 1487 /* when called as init, it's possible that no console was opened, for1488 * example if no /dev file system was provided. We'll check that fd#11489 * was opened, and if not we'll attempt to create and open /dev/console1490 * and /dev/null that we'll use for later tests.1491 */1492 if (getpid() == 1)1493 prepare();1494 1495 /* the definition of a series of tests comes from either argv[1] or the1496 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited1497 * series of test names and optional ranges:1498 * syscall:5-15[:.*],stdlib:8-101499 */1500 test = argv[1];1501 if (!is_setting_valid(test))1502 test = getenv("NOLIBC_TEST");1503 1504 if (is_setting_valid(test)) {1505 char *comma, *colon, *dash, *value;1506 1507 do {1508 comma = strchr(test, ',');1509 if (comma)1510 *(comma++) = '\0';1511 1512 colon = strchr(test, ':');1513 if (colon)1514 *(colon++) = '\0';1515 1516 for (idx = 0; test_names[idx].name; idx++) {1517 if (strcmp(test, test_names[idx].name) == 0)1518 break;1519 }1520 1521 if (test_names[idx].name) {1522 /* The test was named, it will be called at least1523 * once. We may have an optional range at <colon>1524 * here, which defaults to the full range.1525 */1526 do {1527 min = 0; max = INT_MAX;1528 value = colon;1529 if (value && *value) {1530 colon = strchr(value, ':');1531 if (colon)1532 *(colon++) = '\0';1533 1534 dash = strchr(value, '-');1535 if (dash)1536 *(dash++) = '\0';1537 1538 /* support :val: :min-max: :min-: :-max: */1539 if (*value)1540 min = atoi(value);1541 if (!dash)1542 max = min;1543 else if (*dash)1544 max = atoi(dash);1545 1546 value = colon;1547 }1548 1549 /* now's time to call the test */1550 printf("Running test '%s'\n", test_names[idx].name);1551 err = test_names[idx].func(min, max);1552 ret += err;1553 printf("Errors during this test: %d\n\n", err);1554 } while (colon && *colon);1555 } else1556 printf("Ignoring unknown test name '%s'\n", test);1557 1558 test = comma;1559 } while (test && *test);1560 } else {1561 /* no test mentioned, run everything */1562 for (idx = 0; test_names[idx].name; idx++) {1563 printf("Running test '%s'\n", test_names[idx].name);1564 err = test_names[idx].func(min, max);1565 ret += err;1566 printf("Errors during this test: %d\n\n", err);1567 }1568 }1569 1570 printf("Total number of errors: %d\n", ret);1571 1572 if (getpid() == 1) {1573 /* we're running as init, there's no other process on the1574 * system, thus likely started from a VM for a quick check.1575 * Exiting will provoke a kernel panic that may be reported1576 * as an error by Qemu or the hypervisor, while stopping1577 * cleanly will often be reported as a success. This allows1578 * to use the output of this program for bisecting kernels.1579 */1580 printf("Leaving init with final status: %d\n", !!ret);1581 if (ret == 0)1582 reboot(RB_POWER_OFF);1583#if defined(__x86_64__)1584 /* QEMU started with "-device isa-debug-exit -no-reboot" will1585 * exit with status code 2N+1 when N is written to 0x501. We1586 * hard-code the syscall here as it's arch-dependent.1587 */1588 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)1589 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));1590 /* if it does nothing, fall back to the regular panic */1591#endif1592 }1593 1594 printf("Exiting with status %d\n", !!ret);1595 return !!ret;1596}1597