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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 */
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 NOLIBC
69 1
70#else
71 0
72#endif
73;
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_H
82char *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 */
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 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
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 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
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 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
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 NOLIBC
707 test_auxv = _auxv;
708#endif
709
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 into
714 * 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 64K
778 * which are selected at kernel compilation time.
779 */
780 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
781#else
782 /*
783 * Assuming other architectures must have at least 4K page.
784 */
785 c = (x >= 4096);
786#endif
787
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 NULL
889 };
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 else
901 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 else
914 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#endif
1011
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 into
1019 * 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 set
1115 * 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 into
1122 * 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 into
1290 * 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#endif
1336
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#endif
1344
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, so
1382 * 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 so
1399 * we need to reopen it from /dev/console. If it failed above, it will
1400 * 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, for
1488 * example if no /dev file system was provided. We'll check that fd#1
1489 * was opened, and if not we'll attempt to create and open /dev/console
1490 * 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 the
1496 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1497 * series of test names and optional ranges:
1498 * syscall:5-15[:.*],stdlib:8-10
1499 */
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 least
1523 * 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 } else
1556 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 the
1574 * system, thus likely started from a VM for a quick check.
1575 * Exiting will provoke a kernel panic that may be reported
1576 * as an error by Qemu or the hypervisor, while stopping
1577 * cleanly will often be reported as a success. This allows
1578 * 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" will
1585 * exit with status code 2N+1 when N is written to 0x501. We
1586 * 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#endif
1592 }
1593
1594 printf("Exiting with status %d\n", !!ret);
1595 return !!ret;
1596}