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/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 #endif
44 #endif
45
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 */
53 static char **test_envp;
54
55 /* will be used to test initialization of argv */
56 static char **test_argv;
57
58 /* will be used to test initialization of argc */
59 static int test_argc;
60
61 /* will be used by some test cases as readable file, please don't write it */
62 static const char *argv0;
63
64 /* will be used by constructor tests */
65 static int constructor_test_value;
66
67 static const int is_nolibc =
68 #ifdef NOLIBC
69 1
70 #else
71 0
72 #endif
73 ;
74
75 /* definition of a series of tests */
76 struct test {
77 const char *name; /* test name */
78 int (*func)(int min, int max); /* handler */
79 };
80
81 #ifndef _NOLIBC_STDLIB_H
82 char *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 #endif
91
92 #define CASE_ERR(err) \
93 case err: return #err
94
95 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
96 * or the decimal value for less common ones.
97 */
98 static 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
143 static 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
158 enum RESULT {
159 OK,
160 FAIL,
161 SKIPPED,
162 };
163
164 static 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 else
173 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 evaluate
180 * expression <expr>, print the status to stdout, and update the "ret"
181 * variable to count failures. The functions themselves return the number
182 * 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
188 static __attribute__((unused))
189 int 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
202 static __attribute__((unused))
203 int 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
216 static __attribute__((unused))
217 int 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
230 static __attribute__((unused))
231 int 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
244 static __attribute__((unused))
245 int 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
258 static __attribute__((unused))
259 int 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
272 static __attribute__((unused))
273 int 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
286 static __attribute__((unused))
287 int 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
300 static __attribute__((unused))
301 int 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
320 static __attribute__((unused))
321 int 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
340 static __attribute__((unused))
341 int 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
363 static __attribute__((unused))
364 int 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 else
375 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
387 static __attribute__((unused))
388 int 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
406 static __attribute__((unused))
407 int 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
424 static __attribute__((unused))
425 int 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
442 static __attribute__((unused))
443 int 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
460 static __attribute__((unused))
461 int 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
473 static __attribute__((unused))
474 int 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
487 static __attribute__((unused))
488 int 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
501 static __attribute__((unused))
502 int 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
517 static __attribute__((unused))
518 int 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 else
529 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
540 static __attribute__((unused))
541 int 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
559 static __attribute__((unused))
560 int 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
578 static __attribute__((unused))
579 int 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
597 static __attribute__((unused))
598 int 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
615 static __attribute__((unused))
616 int 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
635 static __attribute__((unused))
636 int 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))
683 static void constructor1(void)
684 {
685 constructor_test_value = 1;
686 }
687
688 __attribute__((constructor))
689 static void constructor2(void)
690 {
691 constructor_test_value *= 2;
692 }
693
694 int run_startup(int min, int max)
695 {
696 int test;
697 int ret = 0;
698 /* kernel at least passes HOME and TERM, shell passes more */
699 int env_total = 2;
700 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
701 extern char end;
702 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
703 /* differ from nolibc, both glibc and musl have no global _auxv */
704 const unsigned long *test_auxv = (void *)-1;
705 #ifdef NOLIBC
706 test_auxv = _auxv;
707 #endif
708
709 for (test = min; test >= 0 && test <= max; test++) {
710 int llen = 0; /* line length */
711
712 /* avoid leaving empty lines below, this will insert holes into
713 * test numbers.
714 */
715 switch (test + __LINE__ + 1) {
716 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;
717 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
718 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
719 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
720 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
721 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
722 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
723 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
724 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
725 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
726 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
727 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
728 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
729 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
730 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;
731 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
732 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;
733 case __LINE__:
734 return ret; /* must be last */
735 /* note: do not set any defaults so as to permit holes above */
736 }
737 }
738 return ret;
739 }
740
741
742 /* used by some syscall tests below */
743 int test_getdents64(const char *dir)
744 {
745 char buffer[4096];
746 int fd, ret;
747 int err;
748
749 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
750 if (ret < 0)
751 return ret;
752
753 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
754 err = errno;
755 close(fd);
756
757 errno = err;
758 return ret;
759 }
760
761 int test_getpagesize(void)
762 {
763 int x = getpagesize();
764 int c;
765
766 if (x < 0)
767 return x;
768
769 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
770 /*
771 * x86 family is always 4K page.
772 */
773 c = (x == 4096);
774 #elif defined(__aarch64__)
775 /*
776 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
777 * which are selected at kernel compilation time.
778 */
779 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
780 #else
781 /*
782 * Assuming other architectures must have at least 4K page.
783 */
784 c = (x >= 4096);
785 #endif
786
787 return !c;
788 }
789
790 int test_fork(void)
791 {
792 int status;
793 pid_t pid;
794
795 /* flush the printf buffer to avoid child flush it */
796 fflush(stdout);
797 fflush(stderr);
798
799 pid = fork();
800
801 switch (pid) {
802 case -1:
803 return 1;
804
805 case 0:
806 exit(123);
807
808 default:
809 pid = waitpid(pid, &status, 0);
810
811 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
812 }
813 }
814
815 int test_stat_timestamps(void)
816 {
817 struct stat st;
818
819 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
820 return 1;
821
822 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
823 return 1;
824
825 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
826 return 1;
827
828 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
829 return 1;
830
831 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
832 return 1;
833
834 return 0;
835 }
836
837 int test_uname(void)
838 {
839 struct utsname buf;
840 char osrelease[sizeof(buf.release)];
841 ssize_t r;
842 int fd;
843
844 memset(&buf.domainname, 'P', sizeof(buf.domainname));
845
846 if (uname(&buf))
847 return 1;
848
849 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
850 return 1;
851
852 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
853 if (fd == -1)
854 return 1;
855
856 r = read(fd, osrelease, sizeof(osrelease));
857 if (r == -1)
858 return 1;
859
860 close(fd);
861
862 if (osrelease[r - 1] == '\n')
863 r--;
864
865 /* Validate one of the later fields to ensure field sizes are correct */
866 if (strncmp(osrelease, buf.release, r))
867 return 1;
868
869 /* Ensure the field domainname is set, it is missing from struct old_utsname */
870 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
871 return 1;
872
873 return 0;
874 }
875
876 int test_mmap_munmap(void)
877 {
878 int ret, fd, i, page_size;
879 void *mem;
880 size_t file_size, length;
881 off_t offset, pa_offset;
882 struct stat stat_buf;
883 const char * const files[] = {
884 "/dev/zero",
885 "/proc/1/exe", "/proc/self/exe",
886 argv0,
887 NULL
888 };
889
890 page_size = getpagesize();
891 if (page_size < 0)
892 return 1;
893
894 /* find a right file to mmap, existed and accessible */
895 for (i = 0; files[i] != NULL; i++) {
896 ret = fd = open(files[i], O_RDONLY);
897 if (ret == -1)
898 continue;
899 else
900 break;
901 }
902 if (ret == -1)
903 return 1;
904
905 ret = stat(files[i], &stat_buf);
906 if (ret == -1)
907 goto end;
908
909 /* file size of the special /dev/zero is 0, let's assign one manually */
910 if (i == 0)
911 file_size = 3*page_size;
912 else
913 file_size = stat_buf.st_size;
914
915 offset = file_size - 1;
916 if (offset < 0)
917 offset = 0;
918 length = file_size - offset;
919 pa_offset = offset & ~(page_size - 1);
920
921 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
922 if (mem == MAP_FAILED) {
923 ret = 1;
924 goto end;
925 }
926
927 ret = munmap(mem, length + offset - pa_offset);
928
929 end:
930 close(fd);
931 return !!ret;
932 }
933
934 int test_pipe(void)
935 {
936 const char *const msg = "hello, nolibc";
937 int pipefd[2];
938 char buf[32];
939 size_t len;
940
941 if (pipe(pipefd) == -1)
942 return 1;
943
944 write(pipefd[1], msg, strlen(msg));
945 close(pipefd[1]);
946 len = read(pipefd[0], buf, sizeof(buf));
947 close(pipefd[0]);
948
949 if (len != strlen(msg))
950 return 1;
951
952 return !!memcmp(buf, msg, len);
953 }
954
955 int test_rlimit(void)
956 {
957 struct rlimit rlim = {
958 .rlim_cur = 1 << 20,
959 .rlim_max = 1 << 21,
960 };
961 int ret;
962
963 ret = setrlimit(RLIMIT_CORE, &rlim);
964 if (ret)
965 return -1;
966
967 rlim.rlim_cur = 0;
968 rlim.rlim_max = 0;
969
970 ret = getrlimit(RLIMIT_CORE, &rlim);
971 if (ret)
972 return -1;
973
974 if (rlim.rlim_cur != 1 << 20)
975 return -1;
976 if (rlim.rlim_max != 1 << 21)
977 return -1;
978
979 return 0;
980 }
981
982
983 /* Run syscall tests between IDs <min> and <max>.
984 * Return 0 on success, non-zero on failure.
985 */
986 int run_syscall(int min, int max)
987 {
988 struct timeval tv;
989 struct timezone tz;
990 struct stat stat_buf;
991 int euid0;
992 int proc;
993 int test;
994 int tmp;
995 int ret = 0;
996 void *p1, *p2;
997 int has_gettid = 1;
998 int has_brk;
999
1000 /* <proc> indicates whether or not /proc is mounted */
1001 proc = stat("/proc", &stat_buf) == 0;
1002
1003 /* this will be used to skip certain tests that can't be run unprivileged */
1004 euid0 = geteuid() == 0;
1005
1006 /* from 2.30, glibc provides gettid() */
1007 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
1008 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
1009 #endif
1010
1011 /* on musl setting brk()/sbrk() always fails */
1012 has_brk = brk(0) == 0;
1013
1014 for (test = min; test >= 0 && test <= max; test++) {
1015 int llen = 0; /* line length */
1016
1017 /* avoid leaving empty lines below, this will insert holes into
1018 * test numbers.
1019 */
1020 switch (test + __LINE__ + 1) {
1021 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
1022 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1023 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
1024 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
1025 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
1026 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1027 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1028 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
1029 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
1030 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
1031 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
1032 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
1033 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
1034 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
1035 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
1036 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
1037 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
1038 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
1039 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
1040 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
1041 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
1042 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
1043 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1044 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1045 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1046 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1047 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1048 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1049 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
1050 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
1051 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
1052 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1053 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
1054 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
1055 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
1056 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1057 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1058 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1059 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1060 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1061 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1062 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1063 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1064 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1065 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1066 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
1067 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
1068 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
1069 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
1070 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1071 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1072 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1073 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1074 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1075 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
1076 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1077 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
1078 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1079 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;
1080 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1081 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1082 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1083 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
1084 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1085 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
1086 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1087 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1088 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1089 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1090 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1091 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1092 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1093 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1094 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1095 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1096 case __LINE__:
1097 return ret; /* must be last */
1098 /* note: do not set any defaults so as to permit holes above */
1099 }
1100 }
1101 return ret;
1102 }
1103
1104 int run_stdlib(int min, int max)
1105 {
1106 int test;
1107 int ret = 0;
1108
1109 for (test = min; test >= 0 && test <= max; test++) {
1110 int llen = 0; /* line length */
1111
1112 /* For functions that take a long buffer, like strlcat()
1113 * Add some more chars after the \0, to test functions that overwrite the buffer set
1114 * the \0 at the exact right position.
1115 */
1116 char buf[10] = "test123456";
1117 buf[4] = '\0';
1118
1119
1120 /* avoid leaving empty lines below, this will insert holes into
1121 * test numbers.
1122 */
1123 switch (test + __LINE__ + 1) {
1124 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
1125 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1126 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1127 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1128 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1129 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1130 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1131 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1132 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1133 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1134 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1135 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1136 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1137 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1138 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1139 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1140 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1141 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1142 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1143 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1144 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1145 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1146 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1147 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1148 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1149 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1150 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1151 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1152 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1153 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1154 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1155 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1156 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1157 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1158 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1159 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1160 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1161 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1162 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1163 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1164 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1165 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1166 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1167 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1168 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1169 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1170 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1171 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1172 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1173 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1174 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1175 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1176 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1177 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1178 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1179 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1180 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1181 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1182 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1183 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1184 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1185 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1186 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1187 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1188 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1189 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1190 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1191 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1192 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1193 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1194 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1195 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1196 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1197 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
1198 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
1199 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
1200 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
1201 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
1202 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
1203 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
1204 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
1205 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
1206 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
1207 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
1208 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
1209 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
1210 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
1211 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
1212 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
1213 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
1214 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
1215 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
1216 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
1217
1218 case __LINE__:
1219 return ret; /* must be last */
1220 /* note: do not set any defaults so as to permit holes above */
1221 }
1222 }
1223 return ret;
1224 }
1225
1226 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1227 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1228
1229 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1230 {
1231 int ret, fd;
1232 ssize_t w, r;
1233 char buf[100];
1234 FILE *memfile;
1235 va_list args;
1236
1237 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);
1238 if (fd == -1) {
1239 result(llen, SKIPPED);
1240 return 0;
1241 }
1242
1243 memfile = fdopen(fd, "w+");
1244 if (!memfile) {
1245 result(llen, FAIL);
1246 return 1;
1247 }
1248
1249 va_start(args, fmt);
1250 w = vfprintf(memfile, fmt, args);
1251 va_end(args);
1252
1253 if (w != c) {
1254 llen += printf(" written(%d) != %d", (int)w, c);
1255 result(llen, FAIL);
1256 return 1;
1257 }
1258
1259 fflush(memfile);
1260 lseek(fd, 0, SEEK_SET);
1261
1262 r = read(fd, buf, sizeof(buf) - 1);
1263
1264 fclose(memfile);
1265
1266 if (r != w) {
1267 llen += printf(" written(%d) != read(%d)", (int)w, (int)r);
1268 result(llen, FAIL);
1269 return 1;
1270 }
1271
1272 buf[r] = '\0';
1273 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1274 ret = strncmp(expected, buf, c);
1275
1276 result(llen, ret ? FAIL : OK);
1277 return ret;
1278 }
1279
1280 static int run_vfprintf(int min, int max)
1281 {
1282 int test;
1283 int ret = 0;
1284
1285 for (test = min; test >= 0 && test <= max; test++) {
1286 int llen = 0; /* line length */
1287
1288 /* avoid leaving empty lines below, this will insert holes into
1289 * test numbers.
1290 */
1291 switch (test + __LINE__ + 1) {
1292 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1293 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1294 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1295 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1296 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1297 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1298 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1299 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1300 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1301 case __LINE__:
1302 return ret; /* must be last */
1303 /* note: do not set any defaults so as to permit holes above */
1304 }
1305 }
1306 return ret;
1307 }
1308
1309 static int smash_stack(void)
1310 {
1311 char buf[100];
1312 volatile char *ptr = buf;
1313 size_t i;
1314
1315 for (i = 0; i < 200; i++)
1316 ptr[i] = 'P';
1317
1318 return 1;
1319 }
1320
1321 static int run_protection(int min __attribute__((unused)),
1322 int max __attribute__((unused)))
1323 {
1324 pid_t pid;
1325 int llen = 0, status;
1326 struct rlimit rlimit = { 0, 0 };
1327
1328 llen += printf("0 -fstackprotector ");
1329
1330 #if !defined(_NOLIBC_STACKPROTECTOR)
1331 llen += printf("not supported");
1332 result(llen, SKIPPED);
1333 return 0;
1334 #endif
1335
1336 #if defined(_NOLIBC_STACKPROTECTOR)
1337 if (!__stack_chk_guard) {
1338 llen += printf("__stack_chk_guard not initialized");
1339 result(llen, FAIL);
1340 return 1;
1341 }
1342 #endif
1343
1344 pid = -1;
1345 pid = fork();
1346
1347 switch (pid) {
1348 case -1:
1349 llen += printf("fork()");
1350 result(llen, FAIL);
1351 return 1;
1352
1353 case 0:
1354 close(STDOUT_FILENO);
1355 close(STDERR_FILENO);
1356
1357 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1358 setrlimit(RLIMIT_CORE, &rlimit);
1359 smash_stack();
1360 return 1;
1361
1362 default:
1363 pid = waitpid(pid, &status, 0);
1364
1365 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1366 llen += printf("waitpid()");
1367 result(llen, FAIL);
1368 return 1;
1369 }
1370 result(llen, OK);
1371 return 0;
1372 }
1373 }
1374
1375 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
1376 int prepare(void)
1377 {
1378 struct stat stat_buf;
1379
1380 /* It's possible that /dev doesn't even exist or was not mounted, so
1381 * we'll try to create it, mount it, or create minimal entries into it.
1382 * We want at least /dev/null and /dev/console.
1383 */
1384 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1385 if (stat("/dev/console", &stat_buf) != 0 ||
1386 stat("/dev/null", &stat_buf) != 0 ||
1387 stat("/dev/zero", &stat_buf) != 0) {
1388 /* try devtmpfs first, otherwise fall back to manual creation */
1389 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1390 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1391 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1392 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1393 }
1394 }
1395 }
1396
1397 /* If no /dev/console was found before calling init, stdio is closed so
1398 * we need to reopen it from /dev/console. If it failed above, it will
1399 * still fail here and we cannot emit a message anyway.
1400 */
1401 if (close(dup(1)) == -1) {
1402 int fd = open("/dev/console", O_RDWR);
1403
1404 if (fd >= 0) {
1405 if (fd != 0)
1406 dup2(fd, 0);
1407 if (fd != 1)
1408 dup2(fd, 1);
1409 if (fd != 2)
1410 dup2(fd, 2);
1411 if (fd > 2)
1412 close(fd);
1413 puts("\nSuccessfully reopened /dev/console.");
1414 }
1415 }
1416
1417 /* try to mount /proc if not mounted. Silently fail otherwise */
1418 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1419 if (stat("/proc/self", &stat_buf) != 0) {
1420 /* If not mountable, remove /proc completely to avoid misuse */
1421 if (mount("none", "/proc", "proc", 0, 0) != 0)
1422 rmdir("/proc");
1423 }
1424 }
1425
1426 /* some tests rely on a writable /tmp */
1427 mkdir("/tmp", 0755);
1428
1429 return 0;
1430 }
1431
1432 /* This is the definition of known test names, with their functions */
1433 static const struct test test_names[] = {
1434 /* add new tests here */
1435 { .name = "startup", .func = run_startup },
1436 { .name = "syscall", .func = run_syscall },
1437 { .name = "stdlib", .func = run_stdlib },
1438 { .name = "vfprintf", .func = run_vfprintf },
1439 { .name = "protection", .func = run_protection },
1440 { 0 }
1441 };
1442
1443 static int is_setting_valid(char *test)
1444 {
1445 int idx, len, test_len, valid = 0;
1446 char delimiter;
1447
1448 if (!test)
1449 return valid;
1450
1451 test_len = strlen(test);
1452
1453 for (idx = 0; test_names[idx].name; idx++) {
1454 len = strlen(test_names[idx].name);
1455 if (test_len < len)
1456 continue;
1457
1458 if (strncmp(test, test_names[idx].name, len) != 0)
1459 continue;
1460
1461 delimiter = test[len];
1462 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1463 continue;
1464
1465 valid = 1;
1466 break;
1467 }
1468
1469 return valid;
1470 }
1471
1472 int main(int argc, char **argv, char **envp)
1473 {
1474 int min = 0;
1475 int max = INT_MAX;
1476 int ret = 0;
1477 int err;
1478 int idx;
1479 char *test;
1480
1481 argv0 = argv[0];
1482 test_argc = argc;
1483 test_argv = argv;
1484 test_envp = envp;
1485
1486 /* when called as init, it's possible that no console was opened, for
1487 * example if no /dev file system was provided. We'll check that fd#1
1488 * was opened, and if not we'll attempt to create and open /dev/console
1489 * and /dev/null that we'll use for later tests.
1490 */
1491 if (getpid() == 1)
1492 prepare();
1493
1494 /* the definition of a series of tests comes from either argv[1] or the
1495 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1496 * series of test names and optional ranges:
1497 * syscall:5-15[:.*],stdlib:8-10
1498 */
1499 test = argv[1];
1500 if (!is_setting_valid(test))
1501 test = getenv("NOLIBC_TEST");
1502
1503 if (is_setting_valid(test)) {
1504 char *comma, *colon, *dash, *value;
1505
1506 do {
1507 comma = strchr(test, ',');
1508 if (comma)
1509 *(comma++) = '\0';
1510
1511 colon = strchr(test, ':');
1512 if (colon)
1513 *(colon++) = '\0';
1514
1515 for (idx = 0; test_names[idx].name; idx++) {
1516 if (strcmp(test, test_names[idx].name) == 0)
1517 break;
1518 }
1519
1520 if (test_names[idx].name) {
1521 /* The test was named, it will be called at least
1522 * once. We may have an optional range at <colon>
1523 * here, which defaults to the full range.
1524 */
1525 do {
1526 min = 0; max = INT_MAX;
1527 value = colon;
1528 if (value && *value) {
1529 colon = strchr(value, ':');
1530 if (colon)
1531 *(colon++) = '\0';
1532
1533 dash = strchr(value, '-');
1534 if (dash)
1535 *(dash++) = '\0';
1536
1537 /* support :val: :min-max: :min-: :-max: */
1538 if (*value)
1539 min = atoi(value);
1540 if (!dash)
1541 max = min;
1542 else if (*dash)
1543 max = atoi(dash);
1544
1545 value = colon;
1546 }
1547
1548 /* now's time to call the test */
1549 printf("Running test '%s'\n", test_names[idx].name);
1550 err = test_names[idx].func(min, max);
1551 ret += err;
1552 printf("Errors during this test: %d\n\n", err);
1553 } while (colon && *colon);
1554 } else
1555 printf("Ignoring unknown test name '%s'\n", test);
1556
1557 test = comma;
1558 } while (test && *test);
1559 } else {
1560 /* no test mentioned, run everything */
1561 for (idx = 0; test_names[idx].name; idx++) {
1562 printf("Running test '%s'\n", test_names[idx].name);
1563 err = test_names[idx].func(min, max);
1564 ret += err;
1565 printf("Errors during this test: %d\n\n", err);
1566 }
1567 }
1568
1569 printf("Total number of errors: %d\n", ret);
1570
1571 if (getpid() == 1) {
1572 /* we're running as init, there's no other process on the
1573 * system, thus likely started from a VM for a quick check.
1574 * Exiting will provoke a kernel panic that may be reported
1575 * as an error by Qemu or the hypervisor, while stopping
1576 * cleanly will often be reported as a success. This allows
1577 * to use the output of this program for bisecting kernels.
1578 */
1579 printf("Leaving init with final status: %d\n", !!ret);
1580 if (ret == 0)
1581 reboot(RB_POWER_OFF);
1582 #if defined(__x86_64__)
1583 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1584 * exit with status code 2N+1 when N is written to 0x501. We
1585 * hard-code the syscall here as it's arch-dependent.
1586 */
1587 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
1588 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
1589 /* if it does nothing, fall back to the regular panic */
1590 #endif
1591 }
1592
1593 printf("Exiting with status %d\n", !!ret);
1594 return !!ret;
1595 }
1596
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.