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 #include <stdio.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <sys/auxv.h>
16 #include <sys/ioctl.h>
17 #include <sys/mman.h>
18 #include <sys/mount.h>
19 #include <sys/prctl.h>
20 #include <sys/random.h>
21 #include <sys/reboot.h>
22 #include <sys/resource.h>
23 #include <sys/stat.h>
24 #include <sys/syscall.h>
25 #include <sys/sysmacros.h>
26 #include <sys/time.h>
27 #include <sys/timerfd.h>
28 #include <sys/uio.h>
29 #include <sys/utsname.h>
30 #include <sys/wait.h>
31 #include <dirent.h>
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <poll.h>
35 #include <sched.h>
36 #include <signal.h>
37 #include <stdarg.h>
38 #include <stddef.h>
39 #include <stdint.h>
40 #include <time.h>
41 #include <unistd.h>
42 #include <limits.h>
43 #include <ctype.h>
44
45 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
46
47 #include "nolibc-test-linkage.h"
48
49 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
50 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
51 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
52
53 /* will be used to test initialization of environ */
54 static char **test_envp;
55
56 /* will be used to test initialization of argv */
57 static char **test_argv;
58
59 /* will be used to test initialization of argc */
60 static int test_argc;
61
62 /* will be used by some test cases as readable file, please don't write it */
63 static const char *argv0;
64
65 /* will be used by constructor tests */
66 static int constructor_test_value;
67
68 static const int is_nolibc =
69 #ifdef NOLIBC
70 1
71 #else
72 0
73 #endif
74 ;
75
76 /* definition of a series of tests */
77 struct test {
78 const char *name; /* test name */
79 int (*func)(int min, int max); /* handler */
80 };
81
82 #ifndef _NOLIBC_STDLIB_H
itoa(int i)83 char *itoa(int i)
84 {
85 static char buf[12];
86 int ret;
87
88 ret = snprintf(buf, sizeof(buf), "%d", i);
89 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
90 }
91 #endif
92
93 #define CASE_ERR(err) \
94 case err: return #err
95
96 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
97 * or the decimal value for less common ones.
98 */
errorname(int err)99 static const char *errorname(int err)
100 {
101 switch (err) {
102 case 0: return "SUCCESS";
103 CASE_ERR(EPERM);
104 CASE_ERR(ENOENT);
105 CASE_ERR(ESRCH);
106 CASE_ERR(EINTR);
107 CASE_ERR(EIO);
108 CASE_ERR(ENXIO);
109 CASE_ERR(E2BIG);
110 CASE_ERR(ENOEXEC);
111 CASE_ERR(EBADF);
112 CASE_ERR(ECHILD);
113 CASE_ERR(EAGAIN);
114 CASE_ERR(ENOMEM);
115 CASE_ERR(EACCES);
116 CASE_ERR(EFAULT);
117 CASE_ERR(ENOTBLK);
118 CASE_ERR(EBUSY);
119 CASE_ERR(EEXIST);
120 CASE_ERR(EXDEV);
121 CASE_ERR(ENODEV);
122 CASE_ERR(ENOTDIR);
123 CASE_ERR(EISDIR);
124 CASE_ERR(EINVAL);
125 CASE_ERR(ENFILE);
126 CASE_ERR(EMFILE);
127 CASE_ERR(ENOTTY);
128 CASE_ERR(ETXTBSY);
129 CASE_ERR(EFBIG);
130 CASE_ERR(ENOSPC);
131 CASE_ERR(ESPIPE);
132 CASE_ERR(EROFS);
133 CASE_ERR(EMLINK);
134 CASE_ERR(EPIPE);
135 CASE_ERR(EDOM);
136 CASE_ERR(ERANGE);
137 CASE_ERR(ENOSYS);
138 CASE_ERR(EOVERFLOW);
139 default:
140 return itoa(err);
141 }
142 }
143
align_result(size_t llen)144 static void align_result(size_t llen)
145 {
146 const size_t align = 64;
147 char buf[align];
148 size_t n;
149
150 if (llen >= align)
151 return;
152
153 n = align - llen;
154 memset(buf, ' ', n);
155 buf[n] = '\0';
156 fputs(buf, stdout);
157 }
158
159 enum RESULT {
160 OK,
161 FAIL,
162 SKIPPED,
163 };
164
result(int llen,enum RESULT r)165 static void result(int llen, enum RESULT r)
166 {
167 const char *msg;
168
169 if (r == OK)
170 msg = " [OK]";
171 else if (r == SKIPPED)
172 msg = "[SKIPPED]";
173 else
174 msg = " [FAIL]";
175
176 align_result(llen);
177 puts(msg);
178 }
179
180 /* The tests below are intended to be used by the macroes, which evaluate
181 * expression <expr>, print the status to stdout, and update the "ret"
182 * variable to count failures. The functions themselves return the number
183 * of failures, thus either 0 or 1.
184 */
185
186 #define EXPECT_ZR(cond, expr) \
187 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
188
189 static __attribute__((unused))
expect_zr(int expr,int llen)190 int expect_zr(int expr, int llen)
191 {
192 int ret = !(expr == 0);
193
194 llen += printf(" = %d ", expr);
195 result(llen, ret ? FAIL : OK);
196 return ret;
197 }
198
199
200 #define EXPECT_NZ(cond, expr) \
201 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen); } while (0)
202
203 static __attribute__((unused))
expect_nz(int expr,int llen)204 int expect_nz(int expr, int llen)
205 {
206 int ret = !(expr != 0);
207
208 llen += printf(" = %d ", expr);
209 result(llen, ret ? FAIL : OK);
210 return ret;
211 }
212
213
214 #define EXPECT_EQ(cond, expr, val) \
215 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
216
217 static __attribute__((unused))
expect_eq(uint64_t expr,int llen,uint64_t val)218 int expect_eq(uint64_t expr, int llen, uint64_t val)
219 {
220 int ret = !(expr == val);
221
222 llen += printf(" = %lld ", (long long)expr);
223 result(llen, ret ? FAIL : OK);
224 return ret;
225 }
226
227
228 #define EXPECT_NE(cond, expr, val) \
229 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
230
231 static __attribute__((unused))
expect_ne(int expr,int llen,int val)232 int expect_ne(int expr, int llen, int val)
233 {
234 int ret = !(expr != val);
235
236 llen += printf(" = %d ", expr);
237 result(llen, ret ? FAIL : OK);
238 return ret;
239 }
240
241
242 #define EXPECT_GE(cond, expr, val) \
243 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
244
245 static __attribute__((unused))
expect_ge(int expr,int llen,int val)246 int expect_ge(int expr, int llen, int val)
247 {
248 int ret = !(expr >= val);
249
250 llen += printf(" = %d ", expr);
251 result(llen, ret ? FAIL : OK);
252 return ret;
253 }
254
255
256 #define EXPECT_GT(cond, expr, val) \
257 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
258
259 static __attribute__((unused))
expect_gt(int expr,int llen,int val)260 int expect_gt(int expr, int llen, int val)
261 {
262 int ret = !(expr > val);
263
264 llen += printf(" = %d ", expr);
265 result(llen, ret ? FAIL : OK);
266 return ret;
267 }
268
269
270 #define EXPECT_LE(cond, expr, val) \
271 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
272
273 static __attribute__((unused))
expect_le(int expr,int llen,int val)274 int expect_le(int expr, int llen, int val)
275 {
276 int ret = !(expr <= val);
277
278 llen += printf(" = %d ", expr);
279 result(llen, ret ? FAIL : OK);
280 return ret;
281 }
282
283
284 #define EXPECT_LT(cond, expr, val) \
285 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
286
287 static __attribute__((unused))
expect_lt(int expr,int llen,int val)288 int expect_lt(int expr, int llen, int val)
289 {
290 int ret = !(expr < val);
291
292 llen += printf(" = %d ", expr);
293 result(llen, ret ? FAIL : OK);
294 return ret;
295 }
296
297
298 #define EXPECT_SYSZR(cond, expr) \
299 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
300
301 static __attribute__((unused))
expect_syszr(int expr,int llen)302 int expect_syszr(int expr, int llen)
303 {
304 int ret = 0;
305
306 if (errno == ENOSYS) {
307 llen += printf(" = ENOSYS");
308 result(llen, SKIPPED);
309 } else if (expr) {
310 ret = 1;
311 llen += printf(" = %d %s ", expr, errorname(errno));
312 result(llen, FAIL);
313 } else {
314 llen += printf(" = %d ", expr);
315 result(llen, OK);
316 }
317 return ret;
318 }
319
320
321 #define EXPECT_SYSEQ(cond, expr, val) \
322 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
323
324 static __attribute__((unused))
expect_syseq(int expr,int llen,int val)325 int expect_syseq(int expr, int llen, int val)
326 {
327 int ret = 0;
328
329 if (expr != val) {
330 ret = 1;
331 llen += printf(" = %d %s ", expr, errorname(errno));
332 result(llen, FAIL);
333 } else {
334 llen += printf(" = %d ", expr);
335 result(llen, OK);
336 }
337 return ret;
338 }
339
340
341 #define EXPECT_SYSNE(cond, expr, val) \
342 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
343
344 static __attribute__((unused))
expect_sysne(int expr,int llen,int val)345 int expect_sysne(int expr, int llen, int val)
346 {
347 int ret = 0;
348
349 if (errno == ENOSYS) {
350 llen += printf(" = ENOSYS");
351 result(llen, SKIPPED);
352 } else if (expr == val) {
353 ret = 1;
354 llen += printf(" = %d %s ", expr, errorname(errno));
355 result(llen, FAIL);
356 } else {
357 llen += printf(" = %d ", expr);
358 result(llen, OK);
359 }
360 return ret;
361 }
362
363
364 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
365 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
366
367 #define EXPECT_SYSER(cond, expr, expret, experr) \
368 EXPECT_SYSER2(cond, expr, expret, experr, 0)
369
370 static __attribute__((unused))
expect_syserr2(int expr,int expret,int experr1,int experr2,int llen)371 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
372 {
373 int ret = 0;
374 int _errno = errno;
375
376 llen += printf(" = %d %s ", expr, errorname(_errno));
377 if (errno == ENOSYS) {
378 result(llen, SKIPPED);
379 } else if (expr != expret || (_errno != experr1 && _errno != experr2)) {
380 ret = 1;
381 if (experr2 == 0)
382 llen += printf(" != (%d %s) ", expret, errorname(experr1));
383 else
384 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
385 result(llen, FAIL);
386 } else {
387 result(llen, OK);
388 }
389 return ret;
390 }
391
392
393 #define EXPECT_PTRZR(cond, expr) \
394 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
395
396 static __attribute__((unused))
expect_ptrzr(const void * expr,int llen)397 int expect_ptrzr(const void *expr, int llen)
398 {
399 int ret = 0;
400
401 llen += printf(" = <%p> ", expr);
402 if (expr) {
403 ret = 1;
404 result(llen, FAIL);
405 } else {
406 result(llen, OK);
407 }
408 return ret;
409 }
410
411
412 #define EXPECT_PTRNZ(cond, expr) \
413 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
414
415 static __attribute__((unused))
expect_ptrnz(const void * expr,int llen)416 int expect_ptrnz(const void *expr, int llen)
417 {
418 int ret = 0;
419
420 llen += printf(" = <%p> ", expr);
421 if (!expr) {
422 ret = 1;
423 result(llen, FAIL);
424 } else {
425 result(llen, OK);
426 }
427 return ret;
428 }
429
430 #define EXPECT_PTREQ(cond, expr, cmp) \
431 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
432
433 static __attribute__((unused))
expect_ptreq(const void * expr,int llen,const void * cmp)434 int expect_ptreq(const void *expr, int llen, const void *cmp)
435 {
436 int ret = 0;
437
438 llen += printf(" = <%p> ", expr);
439 if (expr != cmp) {
440 ret = 1;
441 result(llen, FAIL);
442 } else {
443 result(llen, OK);
444 }
445 return ret;
446 }
447
448 #define EXPECT_PTRNE(cond, expr, cmp) \
449 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
450
451 static __attribute__((unused))
expect_ptrne(const void * expr,int llen,const void * cmp)452 int expect_ptrne(const void *expr, int llen, const void *cmp)
453 {
454 int ret = 0;
455
456 llen += printf(" = <%p> ", expr);
457 if (expr == cmp) {
458 ret = 1;
459 result(llen, FAIL);
460 } else {
461 result(llen, OK);
462 }
463 return ret;
464 }
465
466 #define EXPECT_PTRGE(cond, expr, cmp) \
467 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
468
469 static __attribute__((unused))
expect_ptrge(const void * expr,int llen,const void * cmp)470 int expect_ptrge(const void *expr, int llen, const void *cmp)
471 {
472 int ret = !(expr >= cmp);
473
474 llen += printf(" = <%p> ", expr);
475 result(llen, ret ? FAIL : OK);
476 return ret;
477 }
478
479 #define EXPECT_PTRGT(cond, expr, cmp) \
480 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
481
482 static __attribute__((unused))
expect_ptrgt(const void * expr,int llen,const void * cmp)483 int expect_ptrgt(const void *expr, int llen, const void *cmp)
484 {
485 int ret = !(expr > cmp);
486
487 llen += printf(" = <%p> ", expr);
488 result(llen, ret ? FAIL : OK);
489 return ret;
490 }
491
492
493 #define EXPECT_PTRLE(cond, expr, cmp) \
494 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
495
496 static __attribute__((unused))
expect_ptrle(const void * expr,int llen,const void * cmp)497 int expect_ptrle(const void *expr, int llen, const void *cmp)
498 {
499 int ret = !(expr <= cmp);
500
501 llen += printf(" = <%p> ", expr);
502 result(llen, ret ? FAIL : OK);
503 return ret;
504 }
505
506
507 #define EXPECT_PTRLT(cond, expr, cmp) \
508 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
509
510 static __attribute__((unused))
expect_ptrlt(const void * expr,int llen,const void * cmp)511 int expect_ptrlt(const void *expr, int llen, const void *cmp)
512 {
513 int ret = !(expr < cmp);
514
515 llen += printf(" = <%p> ", expr);
516 result(llen, ret ? FAIL : OK);
517 return ret;
518 }
519
520 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
521 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
522
523 #define EXPECT_PTRER(cond, expr, expret, experr) \
524 EXPECT_PTRER2(cond, expr, expret, experr, 0)
525
526 static __attribute__((unused))
expect_ptrerr2(const void * expr,const void * expret,int experr1,int experr2,int llen)527 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
528 {
529 int ret = 0;
530 int _errno = errno;
531
532 llen += printf(" = <%p> %s ", expr, errorname(_errno));
533 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
534 ret = 1;
535 if (experr2 == 0)
536 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
537 else
538 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
539 result(llen, FAIL);
540 } else {
541 result(llen, OK);
542 }
543 return ret;
544 }
545
546 #define EXPECT_STRZR(cond, expr) \
547 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
548
549 static __attribute__((unused))
expect_strzr(const char * expr,int llen)550 int expect_strzr(const char *expr, int llen)
551 {
552 int ret = 0;
553
554 llen += printf(" = <%s> ", expr ? expr : "(null)");
555 if (expr) {
556 ret = 1;
557 result(llen, FAIL);
558 } else {
559 result(llen, OK);
560 }
561 return ret;
562 }
563
564
565 #define EXPECT_STRNZ(cond, expr) \
566 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
567
568 static __attribute__((unused))
expect_strnz(const char * expr,int llen)569 int expect_strnz(const char *expr, int llen)
570 {
571 int ret = 0;
572
573 llen += printf(" = <%s> ", expr ? expr : "(null)");
574 if (!expr) {
575 ret = 1;
576 result(llen, FAIL);
577 } else {
578 result(llen, OK);
579 }
580 return ret;
581 }
582
583
584 #define EXPECT_STREQ(cond, expr, cmp) \
585 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
586
587 static __attribute__((unused))
expect_streq(const char * expr,int llen,const char * cmp)588 int expect_streq(const char *expr, int llen, const char *cmp)
589 {
590 int ret = 0;
591
592 llen += printf(" = <%s> ", expr);
593 if (strcmp(expr, cmp) != 0) {
594 ret = 1;
595 result(llen, FAIL);
596 } else {
597 result(llen, OK);
598 }
599 return ret;
600 }
601
602
603 #define EXPECT_STRNE(cond, expr, cmp) \
604 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
605
606 static __attribute__((unused))
expect_strne(const char * expr,int llen,const char * cmp)607 int expect_strne(const char *expr, int llen, const char *cmp)
608 {
609 int ret = 0;
610
611 llen += printf(" = <%s> ", expr);
612 if (strcmp(expr, cmp) == 0) {
613 ret = 1;
614 result(llen, FAIL);
615 } else {
616 result(llen, OK);
617 }
618 return ret;
619 }
620
621 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \
622 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)
623
624 static __attribute__((unused))
expect_str_buf_eq(size_t expr,const char * buf,size_t val,int llen,const char * cmp)625 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)
626 {
627 llen += printf(" = %lu <%s> ", (unsigned long)expr, buf);
628 if (strcmp(buf, cmp) != 0) {
629 result(llen, FAIL);
630 return 1;
631 }
632 if (expr != val) {
633 result(llen, FAIL);
634 return 1;
635 }
636
637 result(llen, OK);
638 return 0;
639 }
640
641 #define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \
642 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0)
643
644 static __attribute__((unused))
expect_strtox(int llen,void * func,const char * input,int base,intmax_t expected,int expected_chars,int expected_errno)645 int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno)
646 {
647 char *endptr;
648 int actual_errno, actual_chars;
649 intmax_t r;
650
651 errno = 0;
652 if (func == strtol) {
653 r = strtol(input, &endptr, base);
654 } else if (func == strtoul) {
655 r = strtoul(input, &endptr, base);
656 } else {
657 result(llen, FAIL);
658 return 1;
659 }
660 actual_errno = errno;
661 actual_chars = endptr - input;
662
663 llen += printf(" %lld = %lld", (long long)expected, (long long)r);
664 if (r != expected) {
665 result(llen, FAIL);
666 return 1;
667 }
668 if (expected_chars == -1) {
669 if (*endptr != '\0') {
670 result(llen, FAIL);
671 return 1;
672 }
673 } else if (expected_chars != actual_chars) {
674 result(llen, FAIL);
675 return 1;
676 }
677 if (actual_errno != expected_errno) {
678 result(llen, FAIL);
679 return 1;
680 }
681
682 result(llen, OK);
683 return 0;
684 }
685
686 /* declare tests based on line numbers. There must be exactly one test per line. */
687 #define CASE_TEST(name) \
688 case __LINE__: llen += printf("%d %s", test, #name);
689
690 __attribute__((constructor))
constructor1(void)691 static void constructor1(void)
692 {
693 constructor_test_value |= 1 << 0;
694 }
695
696 __attribute__((constructor))
constructor2(int argc,char ** argv,char ** envp)697 static void constructor2(int argc, char **argv, char **envp)
698 {
699 if (argc && argv && envp)
700 constructor_test_value |= 1 << 1;
701 }
702
run_startup(int min,int max)703 int run_startup(int min, int max)
704 {
705 int test;
706 int ret = 0;
707 /* kernel at least passes HOME and TERM, shell passes more */
708 int env_total = 2;
709 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
710 extern char end;
711 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
712 /* differ from nolibc, both glibc and musl have no global _auxv */
713 const unsigned long *test_auxv = (void *)-1;
714 #ifdef NOLIBC
715 test_auxv = _auxv;
716 #endif
717
718 for (test = min; test >= 0 && test <= max; test++) {
719 int llen = 0; /* line length */
720
721 /* avoid leaving empty lines below, this will insert holes into
722 * test numbers.
723 */
724 switch (test + __LINE__ + 1) {
725 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;
726 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
727 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
728 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
729 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
730 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
731 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
732 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
733 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
734 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
735 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
736 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
737 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
738 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
739 CASE_TEST(constructor); EXPECT_EQ(is_nolibc, constructor_test_value, 0x3); break;
740 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
741 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 0x3); break;
742 case __LINE__:
743 return ret; /* must be last */
744 /* note: do not set any defaults so as to permit holes above */
745 }
746 }
747 return ret;
748 }
749
750
751 /* used by some syscall tests below */
test_getdents64(const char * dir)752 int test_getdents64(const char *dir)
753 {
754 char buffer[4096];
755 int fd, ret;
756 int err;
757
758 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
759 if (ret < 0)
760 return ret;
761
762 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
763 err = errno;
764 close(fd);
765
766 errno = err;
767 return ret;
768 }
769
test_dirent(void)770 static int test_dirent(void)
771 {
772 int comm = 0, cmdline = 0;
773 struct dirent dirent, *result;
774 DIR *dir;
775 int ret;
776
777 dir = opendir("/proc/self");
778 if (!dir)
779 return 1;
780
781 while (1) {
782 errno = 0;
783 ret = readdir_r(dir, &dirent, &result);
784 if (ret != 0)
785 return 1;
786 if (!result)
787 break;
788
789 if (strcmp(dirent.d_name, "comm") == 0)
790 comm++;
791 else if (strcmp(dirent.d_name, "cmdline") == 0)
792 cmdline++;
793 }
794
795 if (errno)
796 return 1;
797
798 ret = closedir(dir);
799 if (ret)
800 return 1;
801
802 if (comm != 1 || cmdline != 1)
803 return 1;
804
805 return 0;
806 }
807
test_getrandom(void)808 int test_getrandom(void)
809 {
810 uint64_t rng = 0;
811 ssize_t ret;
812
813 ret = getrandom(&rng, sizeof(rng), GRND_NONBLOCK);
814 if (ret == -1 && errno == EAGAIN)
815 return 0; /* No entropy available yet */
816
817 if (ret != sizeof(rng))
818 return ret;
819
820 if (!rng) {
821 errno = EINVAL;
822 return -1;
823 }
824
825 return 0;
826 }
827
test_getpagesize(void)828 int test_getpagesize(void)
829 {
830 int x = getpagesize();
831 int c;
832
833 if (x < 0)
834 return x;
835
836 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
837 /*
838 * x86 family is always 4K page.
839 */
840 c = (x == 4096);
841 #elif defined(__aarch64__)
842 /*
843 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
844 * which are selected at kernel compilation time.
845 */
846 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
847 #else
848 /*
849 * Assuming other architectures must have at least 4K page.
850 */
851 c = (x >= 4096);
852 #endif
853
854 return !c;
855 }
856
test_file_stream(void)857 int test_file_stream(void)
858 {
859 FILE *f;
860 int r;
861
862 f = fopen("/dev/null", "r");
863 if (!f)
864 return -1;
865
866 errno = 0;
867 r = fwrite("foo", 1, 3, f);
868 if (r != 0 || errno != EBADF) {
869 fclose(f);
870 return -1;
871 }
872
873 r = fclose(f);
874 if (r == EOF)
875 return -1;
876
877 return 0;
878 }
879
880 enum fork_type {
881 FORK_STANDARD,
882 FORK_VFORK,
883 };
884
test_fork(enum fork_type type)885 int test_fork(enum fork_type type)
886 {
887 int status;
888 pid_t pid;
889
890 /* flush the printf buffer to avoid child flush it */
891 fflush(stdout);
892 fflush(stderr);
893
894 switch (type) {
895 case FORK_STANDARD:
896 pid = fork();
897 break;
898 case FORK_VFORK:
899 pid = vfork();
900 break;
901 default:
902 return 1;
903 }
904
905 switch (pid) {
906 case -1:
907 return 1;
908
909 case 0:
910 _exit(123);
911
912 default:
913 pid = waitpid(pid, &status, 0);
914
915 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
916 }
917 }
918
test_stat_timestamps(void)919 int test_stat_timestamps(void)
920 {
921 struct stat st;
922
923 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
924 return 1;
925
926 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
927 return 1;
928
929 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
930 return 1;
931
932 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
933 return 1;
934
935 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
936 return 1;
937
938 return 0;
939 }
940
test_timer(void)941 int test_timer(void)
942 {
943 struct itimerspec timerspec;
944 struct sigevent evp;
945 timer_t timer;
946 int ret;
947
948 evp.sigev_notify = SIGEV_NONE;
949
950 ret = timer_create(CLOCK_MONOTONIC, &evp, &timer);
951 if (ret)
952 return ret;
953
954 timerspec = (struct itimerspec) {
955 .it_value.tv_sec = 1000000,
956 };
957 ret = timer_settime(timer, 0, &timerspec, NULL);
958 if (ret)
959 goto err;
960
961 timerspec = (struct itimerspec) {
962 .it_value.tv_sec = -1,
963 .it_value.tv_nsec = -1,
964 .it_interval.tv_sec = -1,
965 .it_interval.tv_nsec = -1,
966 };
967 ret = timer_gettime(timer, &timerspec);
968 if (ret)
969 goto err;
970
971 errno = EINVAL;
972 ret = -1;
973
974 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
975 goto err;
976
977 if (timerspec.it_value.tv_sec > 1000000)
978 goto err;
979
980 ret = timer_delete(timer);
981 if (ret)
982 return ret;
983
984 return 0;
985
986 err:
987 timer_delete(timer);
988 return ret;
989 }
990
test_timerfd(void)991 int test_timerfd(void)
992 {
993 struct itimerspec timerspec;
994 int timer, ret;
995
996 timer = timerfd_create(CLOCK_MONOTONIC, 0);
997 if (timer == -1)
998 return -1;
999
1000 timerspec = (struct itimerspec) {
1001 .it_value.tv_sec = 1000000,
1002 };
1003 ret = timerfd_settime(timer, 0, &timerspec, NULL);
1004 if (ret)
1005 goto err;
1006
1007 timerspec = (struct itimerspec) {
1008 .it_value.tv_sec = -1,
1009 .it_value.tv_nsec = -1,
1010 .it_interval.tv_sec = -1,
1011 .it_interval.tv_nsec = -1,
1012 };
1013 ret = timerfd_gettime(timer, &timerspec);
1014 if (ret)
1015 goto err;
1016
1017 errno = EINVAL;
1018 ret = -1;
1019
1020 if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
1021 goto err;
1022
1023 if (timerspec.it_value.tv_sec > 1000000)
1024 goto err;
1025
1026 ret = close(timer);
1027 if (ret)
1028 return ret;
1029
1030 return 0;
1031
1032 err:
1033 close(timer);
1034 return ret;
1035 }
1036
test_uname(void)1037 int test_uname(void)
1038 {
1039 struct utsname buf;
1040 char osrelease[sizeof(buf.release)];
1041 ssize_t r;
1042 int fd;
1043
1044 memset(&buf.domainname, 'P', sizeof(buf.domainname));
1045
1046 if (uname(&buf))
1047 return 1;
1048
1049 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
1050 return 1;
1051
1052 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
1053 if (fd == -1)
1054 return 1;
1055
1056 r = read(fd, osrelease, sizeof(osrelease));
1057 if (r == -1)
1058 return 1;
1059
1060 close(fd);
1061
1062 if (osrelease[r - 1] == '\n')
1063 r--;
1064
1065 /* Validate one of the later fields to ensure field sizes are correct */
1066 if (strncmp(osrelease, buf.release, r))
1067 return 1;
1068
1069 /* Ensure the field domainname is set, it is missing from struct old_utsname */
1070 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
1071 return 1;
1072
1073 return 0;
1074 }
1075
test_mmap_munmap(void)1076 int test_mmap_munmap(void)
1077 {
1078 int ret, fd, i, page_size;
1079 void *mem;
1080 size_t file_size, length, mem_length;
1081 off_t offset, pa_offset;
1082 struct stat stat_buf;
1083 const char * const files[] = {
1084 "/dev/zero",
1085 "/proc/1/exe", "/proc/self/exe",
1086 argv0,
1087 NULL
1088 };
1089
1090 page_size = getpagesize();
1091 if (page_size < 0)
1092 return 1;
1093
1094 /* find a right file to mmap, existed and accessible */
1095 for (i = 0; files[i] != NULL; i++) {
1096 ret = fd = open(files[i], O_RDONLY);
1097 if (ret == -1)
1098 continue;
1099 else
1100 break;
1101 }
1102 if (ret == -1)
1103 return 1;
1104
1105 ret = stat(files[i], &stat_buf);
1106 if (ret == -1)
1107 goto end;
1108
1109 /* file size of the special /dev/zero is 0, let's assign one manually */
1110 if (i == 0)
1111 file_size = 3*page_size;
1112 else
1113 file_size = stat_buf.st_size;
1114
1115 offset = file_size - 1;
1116 if (offset < 0)
1117 offset = 0;
1118 length = file_size - offset;
1119 pa_offset = offset & ~(page_size - 1);
1120 mem_length = length + offset - pa_offset;
1121
1122 mem = mmap(NULL, mem_length, PROT_READ, MAP_SHARED, fd, pa_offset);
1123 if (mem == MAP_FAILED) {
1124 ret = 1;
1125 goto end;
1126 }
1127
1128 mem = mremap(mem, mem_length, mem_length * 2, MREMAP_MAYMOVE, 0);
1129 if (mem == MAP_FAILED) {
1130 munmap(mem, mem_length);
1131 ret = 1;
1132 goto end;
1133 }
1134
1135 ret = munmap(mem, mem_length * 2);
1136
1137 end:
1138 close(fd);
1139 return !!ret;
1140 }
1141
test_pipe(void)1142 int test_pipe(void)
1143 {
1144 const char *const msg = "hello, nolibc";
1145 int pipefd[2];
1146 char buf[32];
1147 size_t len;
1148
1149 if (pipe(pipefd) == -1)
1150 return 1;
1151
1152 write(pipefd[1], msg, strlen(msg));
1153 close(pipefd[1]);
1154 len = read(pipefd[0], buf, sizeof(buf));
1155 close(pipefd[0]);
1156
1157 if (len != strlen(msg))
1158 return 1;
1159
1160 return !!memcmp(buf, msg, len);
1161 }
1162
test_rlimit(void)1163 int test_rlimit(void)
1164 {
1165 struct rlimit rlim = {
1166 .rlim_cur = 1 << 20,
1167 .rlim_max = 1 << 21,
1168 };
1169 int ret;
1170
1171 ret = setrlimit(RLIMIT_CORE, &rlim);
1172 if (ret)
1173 return -1;
1174
1175 rlim.rlim_cur = 0;
1176 rlim.rlim_max = 0;
1177
1178 ret = getrlimit(RLIMIT_CORE, &rlim);
1179 if (ret)
1180 return -1;
1181
1182 if (rlim.rlim_cur != 1 << 20)
1183 return -1;
1184 if (rlim.rlim_max != 1 << 21)
1185 return -1;
1186
1187 return 0;
1188 }
1189
test_openat(void)1190 int test_openat(void)
1191 {
1192 int dev, null;
1193
1194 dev = openat(AT_FDCWD, "/dev", O_DIRECTORY);
1195 if (dev < 0)
1196 return -1;
1197
1198 null = openat(dev, "null", O_RDONLY);
1199 close(dev);
1200 if (null < 0)
1201 return -1;
1202
1203 close(null);
1204 return 0;
1205 }
1206
test_namespace(void)1207 int test_namespace(void)
1208 {
1209 int original_ns, new_ns, ret;
1210 ino_t original_ns_ino;
1211 struct stat stat_buf;
1212
1213 original_ns = open("/proc/self/ns/uts", O_RDONLY);
1214 if (original_ns == -1)
1215 return -1;
1216
1217 ret = fstat(original_ns, &stat_buf);
1218 if (ret)
1219 goto out;
1220
1221 original_ns_ino = stat_buf.st_ino;
1222
1223 ret = unshare(CLONE_NEWUTS);
1224 if (ret)
1225 goto out;
1226
1227 new_ns = open("/proc/self/ns/uts", O_RDONLY);
1228 if (new_ns == -1) {
1229 ret = new_ns;
1230 goto out;
1231 }
1232
1233 ret = fstat(new_ns, &stat_buf);
1234 close(new_ns);
1235 if (ret)
1236 goto out;
1237
1238 if (stat_buf.st_ino == original_ns_ino) {
1239 errno = EINVAL;
1240 ret = -1;
1241 goto out;
1242 }
1243
1244 ret = setns(original_ns, CLONE_NEWUTS);
1245 if (ret)
1246 goto out;
1247
1248 new_ns = open("/proc/self/ns/uts", O_RDONLY);
1249 if (new_ns == -1) {
1250 ret = new_ns;
1251 goto out;
1252 }
1253
1254 ret = fstat(new_ns, &stat_buf);
1255 if (ret)
1256 goto out;
1257
1258 close(new_ns);
1259
1260 if (stat_buf.st_ino != original_ns_ino) {
1261 errno = EINVAL;
1262 ret = -1;
1263 goto out;
1264 }
1265
1266 ret = 0;
1267
1268 out:
1269 close(original_ns);
1270 return ret;
1271 }
1272
1273 /* Run syscall tests between IDs <min> and <max>.
1274 * Return 0 on success, non-zero on failure.
1275 */
run_syscall(int min,int max)1276 int run_syscall(int min, int max)
1277 {
1278 struct timeval tv;
1279 struct timezone tz;
1280 struct timespec ts;
1281 struct stat stat_buf;
1282 int euid0;
1283 int proc;
1284 int test;
1285 int tmp;
1286 struct iovec iov_one = {
1287 .iov_base = &tmp,
1288 .iov_len = 1,
1289 };
1290 int ret = 0;
1291 void *p1, *p2;
1292 int has_gettid = 1;
1293 int has_brk;
1294
1295 /* <proc> indicates whether or not /proc is mounted */
1296 proc = stat("/proc", &stat_buf) == 0;
1297
1298 /* this will be used to skip certain tests that can't be run unprivileged */
1299 euid0 = geteuid() == 0;
1300
1301 /* from 2.30, glibc provides gettid() */
1302 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
1303 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
1304 #endif
1305
1306 /* on musl setting brk()/sbrk() always fails */
1307 has_brk = brk(0) == 0;
1308
1309 for (test = min; test >= 0 && test <= max; test++) {
1310 int llen = 0; /* line length */
1311
1312 /* avoid leaving empty lines below, this will insert holes into
1313 * test numbers.
1314 */
1315 switch (test + __LINE__ + 1) {
1316 CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break;
1317 CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break;
1318 CASE_TEST(clock_getres); EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break;
1319 CASE_TEST(clock_gettime); EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break;
1320 CASE_TEST(clock_settime); EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break;
1321 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
1322 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1323 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
1324 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
1325 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
1326 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1327 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1328 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
1329 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
1330 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
1331 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
1332 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
1333 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
1334 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
1335 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
1336 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
1337 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
1338 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
1339 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
1340 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
1341 CASE_TEST(clock_nanosleep); ts.tv_nsec = -1; EXPECT_EQ(1, EINVAL, clock_nanosleep(CLOCK_REALTIME, 0, &ts, NULL)); break;
1342 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
1343 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
1344 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1345 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1346 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1347 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1348 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1349 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1350 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
1351 CASE_TEST(fchdir_stdin); EXPECT_SYSER(1, fchdir(STDIN_FILENO), -1, ENOTDIR); break;
1352 CASE_TEST(fchdir_badfd); EXPECT_SYSER(1, fchdir(-1), -1, EBADF); break;
1353 CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break;
1354 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break;
1355 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
1356 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1357 CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break;
1358 CASE_TEST(getrandom); EXPECT_SYSZR(1, test_getrandom()); break;
1359 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
1360 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
1361 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
1362 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1363 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1364 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1365 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1366 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1367 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1368 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1369 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1370 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1371 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1372 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
1373 CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break;
1374 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break;
1375 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break;
1376 CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break;
1377 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
1378 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1379 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1380 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1381 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1382 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1383 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
1384 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1385 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
1386 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1387 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;
1388 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1389 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1390 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1391 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
1392 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1393 CASE_TEST(timer); EXPECT_SYSZR(1, test_timer()); break;
1394 CASE_TEST(timerfd); EXPECT_SYSZR(1, test_timerfd()); break;
1395 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
1396 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1397 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1398 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1399 CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break;
1400 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1401 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1402 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1403 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1404 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1405 CASE_TEST(readv_badf); EXPECT_SYSER(1, readv(-1, &iov_one, 1), -1, EBADF); break;
1406 CASE_TEST(readv_zero); EXPECT_SYSZR(1, readv(1, NULL, 0)); break;
1407 CASE_TEST(writev_badf); EXPECT_SYSER(1, writev(-1, &iov_one, 1), -1, EBADF); break;
1408 CASE_TEST(writev_zero); EXPECT_SYSZR(1, writev(1, NULL, 0)); break;
1409 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1410 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1411 CASE_TEST(namespace); EXPECT_SYSZR(euid0 && proc, test_namespace()); break;
1412 case __LINE__:
1413 return ret; /* must be last */
1414 /* note: do not set any defaults so as to permit holes above */
1415 }
1416 }
1417 return ret;
1418 }
1419
test_difftime(void)1420 int test_difftime(void)
1421 {
1422 if (difftime(200., 100.) != 100.)
1423 return 1;
1424
1425 if (difftime(100., 200.) != -100.)
1426 return 1;
1427
1428 return 0;
1429 }
1430
run_stdlib(int min,int max)1431 int run_stdlib(int min, int max)
1432 {
1433 int test;
1434 int ret = 0;
1435
1436 for (test = min; test >= 0 && test <= max; test++) {
1437 int llen = 0; /* line length */
1438
1439 /* For functions that take a long buffer, like strlcat()
1440 * Add some more chars after the \0, to test functions that overwrite the buffer set
1441 * the \0 at the exact right position.
1442 */
1443 char buf[11] = "test123456";
1444 buf[4] = '\0';
1445
1446
1447 /* avoid leaving empty lines below, this will insert holes into
1448 * test numbers.
1449 */
1450 switch (test + __LINE__ + 1) {
1451 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
1452 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1453 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1454 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1455 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1456 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1457 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1458 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1459 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1460 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1461 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1462 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1463 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1464 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1465 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1466 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1467 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1468 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1469 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1470 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1471 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1472 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1473 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1474 CASE_TEST(strstr_foobar_foo); EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break;
1475 CASE_TEST(strstr_foobar_bar); EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break;
1476 CASE_TEST(strstr_foobar_baz); EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break;
1477 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1478 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1479 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1480 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1481 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1482 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1483 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1484 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1485 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1486 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1487 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1488 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1489 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1490 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1491 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1492 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1493 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1494 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1495 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1496 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1497 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1498 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1499 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1500 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1501 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1502 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1503 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1504 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1505 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1506 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1507 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1508 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1509 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1510 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1511 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1512 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1513 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1514 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1515 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1516 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1517 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1518 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1519 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1520 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1521 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1522 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1523 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1524 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1525 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1526 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1527 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
1528 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
1529 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
1530 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
1531 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
1532 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
1533 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
1534 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
1535 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
1536 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
1537 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
1538 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
1539 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
1540 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
1541 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
1542 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
1543 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
1544 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
1545 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
1546 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
1547 CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break;
1548 CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break;
1549 CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break;
1550 CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break;
1551 CASE_TEST(abs); EXPECT_EQ(1, abs(-10), 10); break;
1552 CASE_TEST(abs_noop); EXPECT_EQ(1, abs(10), 10); break;
1553 CASE_TEST(difftime); EXPECT_ZR(1, test_difftime()); break;
1554 CASE_TEST(memchr_foobar6_o); EXPECT_STREQ(1, memchr("foobar", 'o', 6), "oobar"); break;
1555 CASE_TEST(memchr_foobar3_b); EXPECT_STRZR(1, memchr("foobar", 'b', 3)); break;
1556
1557 case __LINE__:
1558 return ret; /* must be last */
1559 /* note: do not set any defaults so as to permit holes above */
1560 }
1561 }
1562 return ret;
1563 }
1564
1565 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1566 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1567
expect_vfprintf(int llen,int c,const char * expected,const char * fmt,...)1568 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1569 {
1570 char buf[100];
1571 va_list args;
1572 ssize_t w;
1573 int ret;
1574
1575
1576 va_start(args, fmt);
1577 /* Only allow writing 21 bytes, to test truncation */
1578 w = vsnprintf(buf, 21, fmt, args);
1579 va_end(args);
1580
1581 if (w != c) {
1582 llen += printf(" written(%d) != %d", (int)w, c);
1583 result(llen, FAIL);
1584 return 1;
1585 }
1586
1587 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1588 ret = strncmp(expected, buf, c);
1589
1590 result(llen, ret ? FAIL : OK);
1591 return ret;
1592 }
1593
test_scanf(void)1594 static int test_scanf(void)
1595 {
1596 unsigned long long ull;
1597 unsigned long ul;
1598 unsigned int u;
1599 long long ll;
1600 long l;
1601 void *p;
1602 int i;
1603
1604 /* return __LINE__ to point to the specific failure */
1605
1606 /* test EOF */
1607 if (sscanf("", "foo") != EOF)
1608 return __LINE__;
1609
1610 /* test simple literal without placeholder */
1611 if (sscanf("foo", "foo") != 0)
1612 return __LINE__;
1613
1614 /* test single placeholder */
1615 if (sscanf("123", "%d", &i) != 1)
1616 return __LINE__;
1617
1618 if (i != 123)
1619 return __LINE__;
1620
1621 /* test multiple place holders and separators */
1622 if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3)
1623 return __LINE__;
1624
1625 if (i != 123)
1626 return __LINE__;
1627
1628 if (u != 456)
1629 return __LINE__;
1630
1631 if (p != (void *)0x90)
1632 return __LINE__;
1633
1634 /* test space handling */
1635 if (sscanf("a b1", "a b%d", &i) != 1)
1636 return __LINE__;
1637
1638 if (i != 1)
1639 return __LINE__;
1640
1641 /* test literal percent */
1642 if (sscanf("a%1", "a%%%d", &i) != 1)
1643 return __LINE__;
1644
1645 if (i != 1)
1646 return __LINE__;
1647
1648 /* test stdint.h types */
1649 if (sscanf("1|2|3|4|5|6",
1650 "%d|%ld|%lld|%u|%lu|%llu",
1651 &i, &l, &ll, &u, &ul, &ull) != 6)
1652 return __LINE__;
1653
1654 if (i != 1 || l != 2 || ll != 3 ||
1655 u != 4 || ul != 5 || ull != 6)
1656 return __LINE__;
1657
1658 return 0;
1659 }
1660
test_strerror(void)1661 int test_strerror(void)
1662 {
1663 char buf[100];
1664 ssize_t ret;
1665
1666 memset(buf, 'A', sizeof(buf));
1667
1668 errno = EINVAL;
1669 ret = snprintf(buf, sizeof(buf), "%m");
1670 if (is_nolibc) {
1671 if (ret < 6 || memcmp(buf, "errno=", 6))
1672 return 1;
1673 }
1674
1675 return 0;
1676 }
1677
test_printf_error(void)1678 static int test_printf_error(void)
1679 {
1680 int fd, ret, saved_errno;
1681
1682 fd = open("/dev/full", O_RDWR);
1683 if (fd == -1)
1684 return 1;
1685
1686 errno = 0;
1687 ret = dprintf(fd, "foo");
1688 saved_errno = errno;
1689 close(fd);
1690
1691 if (ret != -1)
1692 return 2;
1693
1694 if (saved_errno != ENOSPC)
1695 return 3;
1696
1697 return 0;
1698 }
1699
run_printf(int min,int max)1700 static int run_printf(int min, int max)
1701 {
1702 int test;
1703 int ret = 0;
1704
1705 for (test = min; test >= 0 && test <= max; test++) {
1706 int llen = 0; /* line length */
1707
1708 /* avoid leaving empty lines below, this will insert holes into
1709 * test numbers.
1710 */
1711 switch (test + __LINE__ + 1) {
1712 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1713 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1714 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1715 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1716 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1717 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1718 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1719 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1720 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1721 CASE_TEST(uintmax_t); EXPECT_VFPRINTF(20, "18446744073709551615", "%ju", 0xffffffffffffffffULL); break;
1722 CASE_TEST(intmax_t); EXPECT_VFPRINTF(20, "-9223372036854775807", "%jd", 0x8000000000000001LL); break;
1723 CASE_TEST(truncation); EXPECT_VFPRINTF(25, "01234567890123456789", "%s", "0123456789012345678901234"); break;
1724 CASE_TEST(string_width); EXPECT_VFPRINTF(10, " 1", "%10s", "1"); break;
1725 CASE_TEST(number_width); EXPECT_VFPRINTF(10, " 1", "%10d", 1); break;
1726 CASE_TEST(width_trunc); EXPECT_VFPRINTF(25, " ", "%25d", 1); break;
1727 CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break;
1728 CASE_TEST(strerror); EXPECT_ZR(1, test_strerror()); break;
1729 CASE_TEST(printf_error); EXPECT_ZR(1, test_printf_error()); break;
1730 case __LINE__:
1731 return ret; /* must be last */
1732 /* note: do not set any defaults so as to permit holes above */
1733 }
1734 }
1735 return ret;
1736 }
1737
1738 __attribute__((no_sanitize("undefined")))
smash_stack(void)1739 static int smash_stack(void)
1740 {
1741 char buf[100];
1742 volatile char *ptr = buf;
1743 size_t i;
1744
1745 for (i = 0; i < 200; i++)
1746 ptr[i] = 'P';
1747
1748 return 1;
1749 }
1750
run_protection(int min,int max)1751 static int run_protection(int min __attribute__((unused)),
1752 int max __attribute__((unused)))
1753 {
1754 pid_t pid;
1755 int llen = 0, status;
1756 struct rlimit rlimit = { 0, 0 };
1757
1758 llen += printf("0 -fstackprotector ");
1759
1760 #if !defined(_NOLIBC_STACKPROTECTOR)
1761 llen += printf("not supported");
1762 result(llen, SKIPPED);
1763 return 0;
1764 #endif
1765
1766 #if defined(_NOLIBC_STACKPROTECTOR)
1767 if (!__stack_chk_guard) {
1768 llen += printf("__stack_chk_guard not initialized");
1769 result(llen, FAIL);
1770 return 1;
1771 }
1772 #endif
1773
1774 pid = -1;
1775 pid = fork();
1776
1777 switch (pid) {
1778 case -1:
1779 llen += printf("fork()");
1780 result(llen, FAIL);
1781 return 1;
1782
1783 case 0:
1784 close(STDOUT_FILENO);
1785 close(STDERR_FILENO);
1786
1787 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1788 setrlimit(RLIMIT_CORE, &rlimit);
1789 smash_stack();
1790 return 1;
1791
1792 default:
1793 pid = waitpid(pid, &status, 0);
1794
1795 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1796 llen += printf("waitpid()");
1797 result(llen, FAIL);
1798 return 1;
1799 }
1800 result(llen, OK);
1801 return 0;
1802 }
1803 }
1804
1805 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
prepare(void)1806 int prepare(void)
1807 {
1808 struct stat stat_buf;
1809
1810 /* It's possible that /dev doesn't even exist or was not mounted, so
1811 * we'll try to create it, mount it, or create minimal entries into it.
1812 * We want at least /dev/null and /dev/console.
1813 */
1814 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1815 if (stat("/dev/console", &stat_buf) != 0 ||
1816 stat("/dev/null", &stat_buf) != 0 ||
1817 stat("/dev/zero", &stat_buf) != 0 ||
1818 stat("/dev/full", &stat_buf) != 0) {
1819 /* try devtmpfs first, otherwise fall back to manual creation */
1820 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1821 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1822 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1823 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1824 mknod("/dev/full", 0666 | S_IFCHR, makedev(1, 7));
1825 }
1826 }
1827 }
1828
1829 /* If no /dev/console was found before calling init, stdio is closed so
1830 * we need to reopen it from /dev/console. If it failed above, it will
1831 * still fail here and we cannot emit a message anyway.
1832 */
1833 if (close(dup(1)) == -1) {
1834 int fd = open("/dev/console", O_RDWR);
1835
1836 if (fd >= 0) {
1837 if (fd != 0)
1838 dup2(fd, 0);
1839 if (fd != 1)
1840 dup2(fd, 1);
1841 if (fd != 2)
1842 dup2(fd, 2);
1843 if (fd > 2)
1844 close(fd);
1845 puts("\nSuccessfully reopened /dev/console.");
1846 }
1847 }
1848
1849 /* try to mount /proc if not mounted. Silently fail otherwise */
1850 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1851 if (stat("/proc/self", &stat_buf) != 0) {
1852 /* If not mountable, remove /proc completely to avoid misuse */
1853 if (mount("none", "/proc", "proc", 0, 0) != 0)
1854 rmdir("/proc");
1855 }
1856 }
1857
1858 /* some tests rely on a writable /tmp */
1859 mkdir("/tmp", 0755);
1860
1861 return 0;
1862 }
1863
1864 /* This is the definition of known test names, with their functions */
1865 static const struct test test_names[] = {
1866 /* add new tests here */
1867 { .name = "startup", .func = run_startup },
1868 { .name = "syscall", .func = run_syscall },
1869 { .name = "stdlib", .func = run_stdlib },
1870 { .name = "printf", .func = run_printf },
1871 { .name = "protection", .func = run_protection },
1872 { 0 }
1873 };
1874
is_setting_valid(char * test)1875 static int is_setting_valid(char *test)
1876 {
1877 int idx, len, test_len, valid = 0;
1878 char delimiter;
1879
1880 if (!test)
1881 return valid;
1882
1883 test_len = strlen(test);
1884
1885 for (idx = 0; test_names[idx].name; idx++) {
1886 len = strlen(test_names[idx].name);
1887 if (test_len < len)
1888 continue;
1889
1890 if (strncmp(test, test_names[idx].name, len) != 0)
1891 continue;
1892
1893 delimiter = test[len];
1894 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1895 continue;
1896
1897 valid = 1;
1898 break;
1899 }
1900
1901 return valid;
1902 }
1903
main(int argc,char ** argv,char ** envp)1904 int main(int argc, char **argv, char **envp)
1905 {
1906 int min = 0;
1907 int max = INT_MAX;
1908 int ret = 0;
1909 int err;
1910 int idx;
1911 char *test;
1912
1913 argv0 = argv[0];
1914 test_argc = argc;
1915 test_argv = argv;
1916 test_envp = envp;
1917
1918 /* when called as init, it's possible that no console was opened, for
1919 * example if no /dev file system was provided. We'll check that fd#1
1920 * was opened, and if not we'll attempt to create and open /dev/console
1921 * and /dev/null that we'll use for later tests.
1922 */
1923 if (getpid() == 1)
1924 prepare();
1925
1926 /* the definition of a series of tests comes from either argv[1] or the
1927 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1928 * series of test names and optional ranges:
1929 * syscall:5-15[:.*],stdlib:8-10
1930 */
1931 test = argv[1];
1932 if (!is_setting_valid(test))
1933 test = getenv("NOLIBC_TEST");
1934
1935 if (is_setting_valid(test)) {
1936 char *comma, *colon, *dash, *value;
1937
1938 do {
1939 comma = strchr(test, ',');
1940 if (comma)
1941 *(comma++) = '\0';
1942
1943 colon = strchr(test, ':');
1944 if (colon)
1945 *(colon++) = '\0';
1946
1947 for (idx = 0; test_names[idx].name; idx++) {
1948 if (strcmp(test, test_names[idx].name) == 0)
1949 break;
1950 }
1951
1952 if (test_names[idx].name) {
1953 /* The test was named, it will be called at least
1954 * once. We may have an optional range at <colon>
1955 * here, which defaults to the full range.
1956 */
1957 do {
1958 min = 0; max = INT_MAX;
1959 value = colon;
1960 if (value && *value) {
1961 colon = strchr(value, ':');
1962 if (colon)
1963 *(colon++) = '\0';
1964
1965 dash = strchr(value, '-');
1966 if (dash)
1967 *(dash++) = '\0';
1968
1969 /* support :val: :min-max: :min-: :-max: */
1970 if (*value)
1971 min = atoi(value);
1972 if (!dash)
1973 max = min;
1974 else if (*dash)
1975 max = atoi(dash);
1976
1977 value = colon;
1978 }
1979
1980 /* now's time to call the test */
1981 printf("Running test '%s'\n", test_names[idx].name);
1982 err = test_names[idx].func(min, max);
1983 ret += err;
1984 printf("Errors during this test: %d\n\n", err);
1985 } while (colon && *colon);
1986 } else
1987 printf("Ignoring unknown test name '%s'\n", test);
1988
1989 test = comma;
1990 } while (test && *test);
1991 } else {
1992 /* no test mentioned, run everything */
1993 for (idx = 0; test_names[idx].name; idx++) {
1994 printf("Running test '%s'\n", test_names[idx].name);
1995 err = test_names[idx].func(min, max);
1996 ret += err;
1997 printf("Errors during this test: %d\n\n", err);
1998 }
1999 }
2000
2001 printf("Total number of errors: %d\n", ret);
2002
2003 if (getpid() == 1) {
2004 /* we're running as init, there's no other process on the
2005 * system, thus likely started from a VM for a quick check.
2006 * Exiting will provoke a kernel panic that may be reported
2007 * as an error by Qemu or the hypervisor, while stopping
2008 * cleanly will often be reported as a success. This allows
2009 * to use the output of this program for bisecting kernels.
2010 */
2011 printf("Leaving init with final status: %d\n", !!ret);
2012 if (ret == 0)
2013 reboot(RB_POWER_OFF);
2014 #if defined(__x86_64__)
2015 /* QEMU started with "-device isa-debug-exit -no-reboot" will
2016 * exit with status code 2N+1 when N is written to 0x501. We
2017 * hard-code the syscall here as it's arch-dependent.
2018 */
2019 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
2020 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
2021 /* if it does nothing, fall back to the regular panic */
2022 #endif
2023 }
2024
2025 printf("Exiting with status %d\n", !!ret);
2026 return !!ret;
2027 }
2028