1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #define _GNU_SOURCE
4 #define _LARGEFILE64_SOURCE
5
6 /* libc-specific include files
7 * The program may be built in 3 ways:
8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
10 * $(CC) with default libc => NOLIBC* never defined
11 */
12 #ifndef NOLIBC
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #ifndef _NOLIBC_STDIO_H
17 /* standard libcs need more includes */
18 #include <sys/auxv.h>
19 #include <sys/io.h>
20 #include <sys/ioctl.h>
21 #include <sys/mman.h>
22 #include <sys/mount.h>
23 #include <sys/prctl.h>
24 #include <sys/reboot.h>
25 #include <sys/resource.h>
26 #include <sys/stat.h>
27 #include <sys/syscall.h>
28 #include <sys/sysmacros.h>
29 #include <sys/time.h>
30 #include <sys/utsname.h>
31 #include <sys/wait.h>
32 #include <dirent.h>
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <poll.h>
36 #include <sched.h>
37 #include <signal.h>
38 #include <stdarg.h>
39 #include <stddef.h>
40 #include <stdint.h>
41 #include <unistd.h>
42 #include <limits.h>
43 #endif
44 #endif
45
46 #include "nolibc-test-linkage.h"
47
48 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
49 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
50 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
51
52 /* will be used to test initialization of environ */
53 static char **test_envp;
54
55 /* will be used to test initialization of argv */
56 static char **test_argv;
57
58 /* will be used to test initialization of argc */
59 static int test_argc;
60
61 /* will be used by some test cases as readable file, please don't write it */
62 static const char *argv0;
63
64 /* will be used by constructor tests */
65 static int constructor_test_value;
66
67 static const int is_nolibc =
68 #ifdef NOLIBC
69 1
70 #else
71 0
72 #endif
73 ;
74
75 /* definition of a series of tests */
76 struct test {
77 const char *name; /* test name */
78 int (*func)(int min, int max); /* handler */
79 };
80
81 #ifndef _NOLIBC_STDLIB_H
itoa(int i)82 char *itoa(int i)
83 {
84 static char buf[12];
85 int ret;
86
87 ret = snprintf(buf, sizeof(buf), "%d", i);
88 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
89 }
90 #endif
91
92 #define CASE_ERR(err) \
93 case err: return #err
94
95 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
96 * or the decimal value for less common ones.
97 */
errorname(int err)98 static const char *errorname(int err)
99 {
100 switch (err) {
101 case 0: return "SUCCESS";
102 CASE_ERR(EPERM);
103 CASE_ERR(ENOENT);
104 CASE_ERR(ESRCH);
105 CASE_ERR(EINTR);
106 CASE_ERR(EIO);
107 CASE_ERR(ENXIO);
108 CASE_ERR(E2BIG);
109 CASE_ERR(ENOEXEC);
110 CASE_ERR(EBADF);
111 CASE_ERR(ECHILD);
112 CASE_ERR(EAGAIN);
113 CASE_ERR(ENOMEM);
114 CASE_ERR(EACCES);
115 CASE_ERR(EFAULT);
116 CASE_ERR(ENOTBLK);
117 CASE_ERR(EBUSY);
118 CASE_ERR(EEXIST);
119 CASE_ERR(EXDEV);
120 CASE_ERR(ENODEV);
121 CASE_ERR(ENOTDIR);
122 CASE_ERR(EISDIR);
123 CASE_ERR(EINVAL);
124 CASE_ERR(ENFILE);
125 CASE_ERR(EMFILE);
126 CASE_ERR(ENOTTY);
127 CASE_ERR(ETXTBSY);
128 CASE_ERR(EFBIG);
129 CASE_ERR(ENOSPC);
130 CASE_ERR(ESPIPE);
131 CASE_ERR(EROFS);
132 CASE_ERR(EMLINK);
133 CASE_ERR(EPIPE);
134 CASE_ERR(EDOM);
135 CASE_ERR(ERANGE);
136 CASE_ERR(ENOSYS);
137 CASE_ERR(EOVERFLOW);
138 default:
139 return itoa(err);
140 }
141 }
142
align_result(size_t llen)143 static void align_result(size_t llen)
144 {
145 const size_t align = 64;
146 char buf[align];
147 size_t n;
148
149 if (llen >= align)
150 return;
151
152 n = align - llen;
153 memset(buf, ' ', n);
154 buf[n] = '\0';
155 fputs(buf, stdout);
156 }
157
158 enum RESULT {
159 OK,
160 FAIL,
161 SKIPPED,
162 };
163
result(int llen,enum RESULT r)164 static void result(int llen, enum RESULT r)
165 {
166 const char *msg;
167
168 if (r == OK)
169 msg = " [OK]";
170 else if (r == SKIPPED)
171 msg = "[SKIPPED]";
172 else
173 msg = " [FAIL]";
174
175 align_result(llen);
176 puts(msg);
177 }
178
179 /* The tests below are intended to be used by the macroes, which evaluate
180 * expression <expr>, print the status to stdout, and update the "ret"
181 * variable to count failures. The functions themselves return the number
182 * of failures, thus either 0 or 1.
183 */
184
185 #define EXPECT_ZR(cond, expr) \
186 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
187
188 static __attribute__((unused))
expect_zr(int expr,int llen)189 int expect_zr(int expr, int llen)
190 {
191 int ret = !(expr == 0);
192
193 llen += printf(" = %d ", expr);
194 result(llen, ret ? FAIL : OK);
195 return ret;
196 }
197
198
199 #define EXPECT_NZ(cond, expr, val) \
200 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)
201
202 static __attribute__((unused))
expect_nz(int expr,int llen)203 int expect_nz(int expr, int llen)
204 {
205 int ret = !(expr != 0);
206
207 llen += printf(" = %d ", expr);
208 result(llen, ret ? FAIL : OK);
209 return ret;
210 }
211
212
213 #define EXPECT_EQ(cond, expr, val) \
214 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
215
216 static __attribute__((unused))
expect_eq(uint64_t expr,int llen,uint64_t val)217 int expect_eq(uint64_t expr, int llen, uint64_t val)
218 {
219 int ret = !(expr == val);
220
221 llen += printf(" = %lld ", (long long)expr);
222 result(llen, ret ? FAIL : OK);
223 return ret;
224 }
225
226
227 #define EXPECT_NE(cond, expr, val) \
228 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
229
230 static __attribute__((unused))
expect_ne(int expr,int llen,int val)231 int expect_ne(int expr, int llen, int val)
232 {
233 int ret = !(expr != val);
234
235 llen += printf(" = %d ", expr);
236 result(llen, ret ? FAIL : OK);
237 return ret;
238 }
239
240
241 #define EXPECT_GE(cond, expr, val) \
242 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
243
244 static __attribute__((unused))
expect_ge(int expr,int llen,int val)245 int expect_ge(int expr, int llen, int val)
246 {
247 int ret = !(expr >= val);
248
249 llen += printf(" = %d ", expr);
250 result(llen, ret ? FAIL : OK);
251 return ret;
252 }
253
254
255 #define EXPECT_GT(cond, expr, val) \
256 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
257
258 static __attribute__((unused))
expect_gt(int expr,int llen,int val)259 int expect_gt(int expr, int llen, int val)
260 {
261 int ret = !(expr > val);
262
263 llen += printf(" = %d ", expr);
264 result(llen, ret ? FAIL : OK);
265 return ret;
266 }
267
268
269 #define EXPECT_LE(cond, expr, val) \
270 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
271
272 static __attribute__((unused))
expect_le(int expr,int llen,int val)273 int expect_le(int expr, int llen, int val)
274 {
275 int ret = !(expr <= val);
276
277 llen += printf(" = %d ", expr);
278 result(llen, ret ? FAIL : OK);
279 return ret;
280 }
281
282
283 #define EXPECT_LT(cond, expr, val) \
284 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
285
286 static __attribute__((unused))
expect_lt(int expr,int llen,int val)287 int expect_lt(int expr, int llen, int val)
288 {
289 int ret = !(expr < val);
290
291 llen += printf(" = %d ", expr);
292 result(llen, ret ? FAIL : OK);
293 return ret;
294 }
295
296
297 #define EXPECT_SYSZR(cond, expr) \
298 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
299
300 static __attribute__((unused))
expect_syszr(int expr,int llen)301 int expect_syszr(int expr, int llen)
302 {
303 int ret = 0;
304
305 if (errno == ENOSYS) {
306 llen += printf(" = ENOSYS");
307 result(llen, SKIPPED);
308 } else if (expr) {
309 ret = 1;
310 llen += printf(" = %d %s ", expr, errorname(errno));
311 result(llen, FAIL);
312 } else {
313 llen += printf(" = %d ", expr);
314 result(llen, OK);
315 }
316 return ret;
317 }
318
319
320 #define EXPECT_SYSEQ(cond, expr, val) \
321 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
322
323 static __attribute__((unused))
expect_syseq(int expr,int llen,int val)324 int expect_syseq(int expr, int llen, int val)
325 {
326 int ret = 0;
327
328 if (expr != val) {
329 ret = 1;
330 llen += printf(" = %d %s ", expr, errorname(errno));
331 result(llen, FAIL);
332 } else {
333 llen += printf(" = %d ", expr);
334 result(llen, OK);
335 }
336 return ret;
337 }
338
339
340 #define EXPECT_SYSNE(cond, expr, val) \
341 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
342
343 static __attribute__((unused))
expect_sysne(int expr,int llen,int val)344 int expect_sysne(int expr, int llen, int val)
345 {
346 int ret = 0;
347
348 if (errno == ENOSYS) {
349 llen += printf(" = ENOSYS");
350 result(llen, SKIPPED);
351 } else if (expr == val) {
352 ret = 1;
353 llen += printf(" = %d %s ", expr, errorname(errno));
354 result(llen, FAIL);
355 } else {
356 llen += printf(" = %d ", expr);
357 result(llen, OK);
358 }
359 return ret;
360 }
361
362
363 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
364 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
365
366 #define EXPECT_SYSER(cond, expr, expret, experr) \
367 EXPECT_SYSER2(cond, expr, expret, experr, 0)
368
369 static __attribute__((unused))
expect_syserr2(int expr,int expret,int experr1,int experr2,int llen)370 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
371 {
372 int ret = 0;
373 int _errno = errno;
374
375 llen += printf(" = %d %s ", expr, errorname(_errno));
376 if (errno == ENOSYS) {
377 result(llen, SKIPPED);
378 } else if (expr != expret || (_errno != experr1 && _errno != experr2)) {
379 ret = 1;
380 if (experr2 == 0)
381 llen += printf(" != (%d %s) ", expret, errorname(experr1));
382 else
383 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
384 result(llen, FAIL);
385 } else {
386 result(llen, OK);
387 }
388 return ret;
389 }
390
391
392 #define EXPECT_PTRZR(cond, expr) \
393 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
394
395 static __attribute__((unused))
expect_ptrzr(const void * expr,int llen)396 int expect_ptrzr(const void *expr, int llen)
397 {
398 int ret = 0;
399
400 llen += printf(" = <%p> ", expr);
401 if (expr) {
402 ret = 1;
403 result(llen, FAIL);
404 } else {
405 result(llen, OK);
406 }
407 return ret;
408 }
409
410
411 #define EXPECT_PTRNZ(cond, expr) \
412 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
413
414 static __attribute__((unused))
expect_ptrnz(const void * expr,int llen)415 int expect_ptrnz(const void *expr, int llen)
416 {
417 int ret = 0;
418
419 llen += printf(" = <%p> ", expr);
420 if (!expr) {
421 ret = 1;
422 result(llen, FAIL);
423 } else {
424 result(llen, OK);
425 }
426 return ret;
427 }
428
429 #define EXPECT_PTREQ(cond, expr, cmp) \
430 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
431
432 static __attribute__((unused))
expect_ptreq(const void * expr,int llen,const void * cmp)433 int expect_ptreq(const void *expr, int llen, const void *cmp)
434 {
435 int ret = 0;
436
437 llen += printf(" = <%p> ", expr);
438 if (expr != cmp) {
439 ret = 1;
440 result(llen, FAIL);
441 } else {
442 result(llen, OK);
443 }
444 return ret;
445 }
446
447 #define EXPECT_PTRNE(cond, expr, cmp) \
448 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
449
450 static __attribute__((unused))
expect_ptrne(const void * expr,int llen,const void * cmp)451 int expect_ptrne(const void *expr, int llen, const void *cmp)
452 {
453 int ret = 0;
454
455 llen += printf(" = <%p> ", expr);
456 if (expr == cmp) {
457 ret = 1;
458 result(llen, FAIL);
459 } else {
460 result(llen, OK);
461 }
462 return ret;
463 }
464
465 #define EXPECT_PTRGE(cond, expr, cmp) \
466 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
467
468 static __attribute__((unused))
expect_ptrge(const void * expr,int llen,const void * cmp)469 int expect_ptrge(const void *expr, int llen, const void *cmp)
470 {
471 int ret = !(expr >= cmp);
472
473 llen += printf(" = <%p> ", expr);
474 result(llen, ret ? FAIL : OK);
475 return ret;
476 }
477
478 #define EXPECT_PTRGT(cond, expr, cmp) \
479 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
480
481 static __attribute__((unused))
expect_ptrgt(const void * expr,int llen,const void * cmp)482 int expect_ptrgt(const void *expr, int llen, const void *cmp)
483 {
484 int ret = !(expr > cmp);
485
486 llen += printf(" = <%p> ", expr);
487 result(llen, ret ? FAIL : OK);
488 return ret;
489 }
490
491
492 #define EXPECT_PTRLE(cond, expr, cmp) \
493 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
494
495 static __attribute__((unused))
expect_ptrle(const void * expr,int llen,const void * cmp)496 int expect_ptrle(const void *expr, int llen, const void *cmp)
497 {
498 int ret = !(expr <= cmp);
499
500 llen += printf(" = <%p> ", expr);
501 result(llen, ret ? FAIL : OK);
502 return ret;
503 }
504
505
506 #define EXPECT_PTRLT(cond, expr, cmp) \
507 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
508
509 static __attribute__((unused))
expect_ptrlt(const void * expr,int llen,const void * cmp)510 int expect_ptrlt(const void *expr, int llen, const void *cmp)
511 {
512 int ret = !(expr < cmp);
513
514 llen += printf(" = <%p> ", expr);
515 result(llen, ret ? FAIL : OK);
516 return ret;
517 }
518
519 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
520 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
521
522 #define EXPECT_PTRER(cond, expr, expret, experr) \
523 EXPECT_PTRER2(cond, expr, expret, experr, 0)
524
525 static __attribute__((unused))
expect_ptrerr2(const void * expr,const void * expret,int experr1,int experr2,int llen)526 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
527 {
528 int ret = 0;
529 int _errno = errno;
530
531 llen += printf(" = <%p> %s ", expr, errorname(_errno));
532 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
533 ret = 1;
534 if (experr2 == 0)
535 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
536 else
537 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
538 result(llen, FAIL);
539 } else {
540 result(llen, OK);
541 }
542 return ret;
543 }
544
545 #define EXPECT_STRZR(cond, expr) \
546 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
547
548 static __attribute__((unused))
expect_strzr(const char * expr,int llen)549 int expect_strzr(const char *expr, int llen)
550 {
551 int ret = 0;
552
553 llen += printf(" = <%s> ", expr ? expr : "(null)");
554 if (expr) {
555 ret = 1;
556 result(llen, FAIL);
557 } else {
558 result(llen, OK);
559 }
560 return ret;
561 }
562
563
564 #define EXPECT_STRNZ(cond, expr) \
565 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
566
567 static __attribute__((unused))
expect_strnz(const char * expr,int llen)568 int expect_strnz(const char *expr, int llen)
569 {
570 int ret = 0;
571
572 llen += printf(" = <%s> ", expr ? expr : "(null)");
573 if (!expr) {
574 ret = 1;
575 result(llen, FAIL);
576 } else {
577 result(llen, OK);
578 }
579 return ret;
580 }
581
582
583 #define EXPECT_STREQ(cond, expr, cmp) \
584 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
585
586 static __attribute__((unused))
expect_streq(const char * expr,int llen,const char * cmp)587 int expect_streq(const char *expr, int llen, const char *cmp)
588 {
589 int ret = 0;
590
591 llen += printf(" = <%s> ", expr);
592 if (strcmp(expr, cmp) != 0) {
593 ret = 1;
594 result(llen, FAIL);
595 } else {
596 result(llen, OK);
597 }
598 return ret;
599 }
600
601
602 #define EXPECT_STRNE(cond, expr, cmp) \
603 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
604
605 static __attribute__((unused))
expect_strne(const char * expr,int llen,const char * cmp)606 int expect_strne(const char *expr, int llen, const char *cmp)
607 {
608 int ret = 0;
609
610 llen += printf(" = <%s> ", expr);
611 if (strcmp(expr, cmp) == 0) {
612 ret = 1;
613 result(llen, FAIL);
614 } else {
615 result(llen, OK);
616 }
617 return ret;
618 }
619
620 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \
621 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)
622
623 static __attribute__((unused))
expect_str_buf_eq(size_t expr,const char * buf,size_t val,int llen,const char * cmp)624 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)
625 {
626 llen += printf(" = %lu <%s> ", (unsigned long)expr, buf);
627 if (strcmp(buf, cmp) != 0) {
628 result(llen, FAIL);
629 return 1;
630 }
631 if (expr != val) {
632 result(llen, FAIL);
633 return 1;
634 }
635
636 result(llen, OK);
637 return 0;
638 }
639
640 #define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \
641 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0)
642
643 static __attribute__((unused))
expect_strtox(int llen,void * func,const char * input,int base,intmax_t expected,int expected_chars,int expected_errno)644 int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno)
645 {
646 char *endptr;
647 int actual_errno, actual_chars;
648 intmax_t r;
649
650 errno = 0;
651 if (func == strtol) {
652 r = strtol(input, &endptr, base);
653 } else if (func == strtoul) {
654 r = strtoul(input, &endptr, base);
655 } else {
656 result(llen, FAIL);
657 return 1;
658 }
659 actual_errno = errno;
660 actual_chars = endptr - input;
661
662 llen += printf(" %lld = %lld", (long long)expected, (long long)r);
663 if (r != expected) {
664 result(llen, FAIL);
665 return 1;
666 }
667 if (expected_chars == -1) {
668 if (*endptr != '\0') {
669 result(llen, FAIL);
670 return 1;
671 }
672 } else if (expected_chars != actual_chars) {
673 result(llen, FAIL);
674 return 1;
675 }
676 if (actual_errno != expected_errno) {
677 result(llen, FAIL);
678 return 1;
679 }
680
681 result(llen, OK);
682 return 0;
683 }
684
685 /* declare tests based on line numbers. There must be exactly one test per line. */
686 #define CASE_TEST(name) \
687 case __LINE__: llen += printf("%d %s", test, #name);
688
689 /* constructors validate that they are executed in definition order */
690 __attribute__((constructor))
constructor1(void)691 static void constructor1(void)
692 {
693 constructor_test_value = 1;
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 *= 2;
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(1, constructor_test_value, 2); 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, 6); 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_getpagesize(void)770 int test_getpagesize(void)
771 {
772 int x = getpagesize();
773 int c;
774
775 if (x < 0)
776 return x;
777
778 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
779 /*
780 * x86 family is always 4K page.
781 */
782 c = (x == 4096);
783 #elif defined(__aarch64__)
784 /*
785 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
786 * which are selected at kernel compilation time.
787 */
788 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
789 #else
790 /*
791 * Assuming other architectures must have at least 4K page.
792 */
793 c = (x >= 4096);
794 #endif
795
796 return !c;
797 }
798
test_fork(void)799 int test_fork(void)
800 {
801 int status;
802 pid_t pid;
803
804 /* flush the printf buffer to avoid child flush it */
805 fflush(stdout);
806 fflush(stderr);
807
808 pid = fork();
809
810 switch (pid) {
811 case -1:
812 return 1;
813
814 case 0:
815 exit(123);
816
817 default:
818 pid = waitpid(pid, &status, 0);
819
820 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
821 }
822 }
823
test_stat_timestamps(void)824 int test_stat_timestamps(void)
825 {
826 struct stat st;
827
828 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
829 return 1;
830
831 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
832 return 1;
833
834 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
835 return 1;
836
837 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
838 return 1;
839
840 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
841 return 1;
842
843 return 0;
844 }
845
test_uname(void)846 int test_uname(void)
847 {
848 struct utsname buf;
849 char osrelease[sizeof(buf.release)];
850 ssize_t r;
851 int fd;
852
853 memset(&buf.domainname, 'P', sizeof(buf.domainname));
854
855 if (uname(&buf))
856 return 1;
857
858 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
859 return 1;
860
861 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
862 if (fd == -1)
863 return 1;
864
865 r = read(fd, osrelease, sizeof(osrelease));
866 if (r == -1)
867 return 1;
868
869 close(fd);
870
871 if (osrelease[r - 1] == '\n')
872 r--;
873
874 /* Validate one of the later fields to ensure field sizes are correct */
875 if (strncmp(osrelease, buf.release, r))
876 return 1;
877
878 /* Ensure the field domainname is set, it is missing from struct old_utsname */
879 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
880 return 1;
881
882 return 0;
883 }
884
test_mmap_munmap(void)885 int test_mmap_munmap(void)
886 {
887 int ret, fd, i, page_size;
888 void *mem;
889 size_t file_size, length;
890 off_t offset, pa_offset;
891 struct stat stat_buf;
892 const char * const files[] = {
893 "/dev/zero",
894 "/proc/1/exe", "/proc/self/exe",
895 argv0,
896 NULL
897 };
898
899 page_size = getpagesize();
900 if (page_size < 0)
901 return 1;
902
903 /* find a right file to mmap, existed and accessible */
904 for (i = 0; files[i] != NULL; i++) {
905 ret = fd = open(files[i], O_RDONLY);
906 if (ret == -1)
907 continue;
908 else
909 break;
910 }
911 if (ret == -1)
912 return 1;
913
914 ret = stat(files[i], &stat_buf);
915 if (ret == -1)
916 goto end;
917
918 /* file size of the special /dev/zero is 0, let's assign one manually */
919 if (i == 0)
920 file_size = 3*page_size;
921 else
922 file_size = stat_buf.st_size;
923
924 offset = file_size - 1;
925 if (offset < 0)
926 offset = 0;
927 length = file_size - offset;
928 pa_offset = offset & ~(page_size - 1);
929
930 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
931 if (mem == MAP_FAILED) {
932 ret = 1;
933 goto end;
934 }
935
936 ret = munmap(mem, length + offset - pa_offset);
937
938 end:
939 close(fd);
940 return !!ret;
941 }
942
test_pipe(void)943 int test_pipe(void)
944 {
945 const char *const msg = "hello, nolibc";
946 int pipefd[2];
947 char buf[32];
948 size_t len;
949
950 if (pipe(pipefd) == -1)
951 return 1;
952
953 write(pipefd[1], msg, strlen(msg));
954 close(pipefd[1]);
955 len = read(pipefd[0], buf, sizeof(buf));
956 close(pipefd[0]);
957
958 if (len != strlen(msg))
959 return 1;
960
961 return !!memcmp(buf, msg, len);
962 }
963
test_rlimit(void)964 int test_rlimit(void)
965 {
966 struct rlimit rlim = {
967 .rlim_cur = 1 << 20,
968 .rlim_max = 1 << 21,
969 };
970 int ret;
971
972 ret = setrlimit(RLIMIT_CORE, &rlim);
973 if (ret)
974 return -1;
975
976 rlim.rlim_cur = 0;
977 rlim.rlim_max = 0;
978
979 ret = getrlimit(RLIMIT_CORE, &rlim);
980 if (ret)
981 return -1;
982
983 if (rlim.rlim_cur != 1 << 20)
984 return -1;
985 if (rlim.rlim_max != 1 << 21)
986 return -1;
987
988 return 0;
989 }
990
991
992 /* Run syscall tests between IDs <min> and <max>.
993 * Return 0 on success, non-zero on failure.
994 */
run_syscall(int min,int max)995 int run_syscall(int min, int max)
996 {
997 struct timeval tv;
998 struct timezone tz;
999 struct stat stat_buf;
1000 int euid0;
1001 int proc;
1002 int test;
1003 int tmp;
1004 int ret = 0;
1005 void *p1, *p2;
1006 int has_gettid = 1;
1007 int has_brk;
1008
1009 /* <proc> indicates whether or not /proc is mounted */
1010 proc = stat("/proc", &stat_buf) == 0;
1011
1012 /* this will be used to skip certain tests that can't be run unprivileged */
1013 euid0 = geteuid() == 0;
1014
1015 /* from 2.30, glibc provides gettid() */
1016 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
1017 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
1018 #endif
1019
1020 /* on musl setting brk()/sbrk() always fails */
1021 has_brk = brk(0) == 0;
1022
1023 for (test = min; test >= 0 && test <= max; test++) {
1024 int llen = 0; /* line length */
1025
1026 /* avoid leaving empty lines below, this will insert holes into
1027 * test numbers.
1028 */
1029 switch (test + __LINE__ + 1) {
1030 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
1031 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1032 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
1033 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
1034 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
1035 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1036 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1037 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
1038 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
1039 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
1040 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
1041 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
1042 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
1043 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
1044 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
1045 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
1046 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
1047 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
1048 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
1049 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
1050 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
1051 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
1052 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1053 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1054 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1055 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1056 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1057 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1058 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
1059 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
1060 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
1061 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1062 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
1063 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
1064 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
1065 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1066 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1067 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1068 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1069 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1070 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1071 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1072 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1073 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1074 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1075 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
1076 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
1077 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
1078 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
1079 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1080 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1081 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1082 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1083 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1084 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
1085 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1086 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
1087 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1088 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;
1089 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1090 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1091 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1092 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
1093 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1094 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
1095 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1096 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1097 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1098 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1099 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1100 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1101 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1102 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1103 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1104 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1105 case __LINE__:
1106 return ret; /* must be last */
1107 /* note: do not set any defaults so as to permit holes above */
1108 }
1109 }
1110 return ret;
1111 }
1112
run_stdlib(int min,int max)1113 int run_stdlib(int min, int max)
1114 {
1115 int test;
1116 int ret = 0;
1117
1118 for (test = min; test >= 0 && test <= max; test++) {
1119 int llen = 0; /* line length */
1120
1121 /* For functions that take a long buffer, like strlcat()
1122 * Add some more chars after the \0, to test functions that overwrite the buffer set
1123 * the \0 at the exact right position.
1124 */
1125 char buf[10] = "test123456";
1126 buf[4] = '\0';
1127
1128
1129 /* avoid leaving empty lines below, this will insert holes into
1130 * test numbers.
1131 */
1132 switch (test + __LINE__ + 1) {
1133 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
1134 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1135 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1136 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1137 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1138 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1139 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1140 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1141 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1142 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1143 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1144 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1145 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1146 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1147 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1148 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1149 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1150 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1151 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1152 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1153 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1154 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1155 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1156 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1157 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1158 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1159 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1160 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1161 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1162 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1163 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1164 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1165 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1166 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1167 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1168 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1169 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1170 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1171 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1172 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1173 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1174 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1175 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1176 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1177 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1178 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1179 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1180 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1181 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1182 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1183 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1184 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1185 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1186 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1187 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1188 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1189 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1190 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1191 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1192 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1193 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1194 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1195 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1196 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1197 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1198 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1199 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1200 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1201 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1202 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1203 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1204 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1205 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1206 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
1207 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
1208 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
1209 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
1210 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
1211 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
1212 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
1213 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
1214 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
1215 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
1216 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
1217 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
1218 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
1219 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
1220 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
1221 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
1222 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
1223 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
1224 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
1225 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
1226
1227 case __LINE__:
1228 return ret; /* must be last */
1229 /* note: do not set any defaults so as to permit holes above */
1230 }
1231 }
1232 return ret;
1233 }
1234
1235 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1236 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1237
expect_vfprintf(int llen,int c,const char * expected,const char * fmt,...)1238 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1239 {
1240 int ret, pipefd[2];
1241 ssize_t w, r;
1242 char buf[100];
1243 FILE *memfile;
1244 va_list args;
1245
1246 ret = pipe(pipefd);
1247 if (ret == -1) {
1248 llen += printf(" pipe() != %s", strerror(errno));
1249 result(llen, FAIL);
1250 return 1;
1251 }
1252
1253 memfile = fdopen(pipefd[1], "w");
1254 if (!memfile) {
1255 result(llen, FAIL);
1256 return 1;
1257 }
1258
1259 va_start(args, fmt);
1260 w = vfprintf(memfile, fmt, args);
1261 va_end(args);
1262
1263 if (w != c) {
1264 llen += printf(" written(%d) != %d", (int)w, c);
1265 result(llen, FAIL);
1266 return 1;
1267 }
1268
1269 fclose(memfile);
1270
1271 r = read(pipefd[0], buf, sizeof(buf) - 1);
1272
1273 if (r != w) {
1274 llen += printf(" written(%d) != read(%d)", (int)w, (int)r);
1275 result(llen, FAIL);
1276 return 1;
1277 }
1278
1279 buf[r] = '\0';
1280 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1281 ret = strncmp(expected, buf, c);
1282
1283 result(llen, ret ? FAIL : OK);
1284 return ret;
1285 }
1286
run_vfprintf(int min,int max)1287 static int run_vfprintf(int min, int max)
1288 {
1289 int test;
1290 int ret = 0;
1291
1292 for (test = min; test >= 0 && test <= max; test++) {
1293 int llen = 0; /* line length */
1294
1295 /* avoid leaving empty lines below, this will insert holes into
1296 * test numbers.
1297 */
1298 switch (test + __LINE__ + 1) {
1299 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1300 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1301 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1302 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1303 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1304 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1305 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1306 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1307 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1308 case __LINE__:
1309 return ret; /* must be last */
1310 /* note: do not set any defaults so as to permit holes above */
1311 }
1312 }
1313 return ret;
1314 }
1315
smash_stack(void)1316 static int smash_stack(void)
1317 {
1318 char buf[100];
1319 volatile char *ptr = buf;
1320 size_t i;
1321
1322 for (i = 0; i < 200; i++)
1323 ptr[i] = 'P';
1324
1325 return 1;
1326 }
1327
run_protection(int min,int max)1328 static int run_protection(int min __attribute__((unused)),
1329 int max __attribute__((unused)))
1330 {
1331 pid_t pid;
1332 int llen = 0, ret;
1333 siginfo_t siginfo = {};
1334 struct rlimit rlimit = { 0, 0 };
1335
1336 llen += printf("0 -fstackprotector ");
1337
1338 #if !defined(_NOLIBC_STACKPROTECTOR)
1339 llen += printf("not supported");
1340 result(llen, SKIPPED);
1341 return 0;
1342 #endif
1343
1344 #if defined(_NOLIBC_STACKPROTECTOR)
1345 if (!__stack_chk_guard) {
1346 llen += printf("__stack_chk_guard not initialized");
1347 result(llen, FAIL);
1348 return 1;
1349 }
1350 #endif
1351
1352 pid = -1;
1353 pid = fork();
1354
1355 switch (pid) {
1356 case -1:
1357 llen += printf("fork()");
1358 result(llen, FAIL);
1359 return 1;
1360
1361 case 0:
1362 close(STDOUT_FILENO);
1363 close(STDERR_FILENO);
1364
1365 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1366 setrlimit(RLIMIT_CORE, &rlimit);
1367 smash_stack();
1368 return 1;
1369
1370 default:
1371 ret = waitid(P_PID, pid, &siginfo, WEXITED);
1372
1373 if (ret != 0 || siginfo.si_signo != SIGCHLD ||
1374 siginfo.si_code != CLD_KILLED || siginfo.si_status != SIGABRT) {
1375 llen += printf("waitid()");
1376 result(llen, FAIL);
1377 return 1;
1378 }
1379 result(llen, OK);
1380 return 0;
1381 }
1382 }
1383
1384 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
prepare(void)1385 int prepare(void)
1386 {
1387 struct stat stat_buf;
1388
1389 /* It's possible that /dev doesn't even exist or was not mounted, so
1390 * we'll try to create it, mount it, or create minimal entries into it.
1391 * We want at least /dev/null and /dev/console.
1392 */
1393 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1394 if (stat("/dev/console", &stat_buf) != 0 ||
1395 stat("/dev/null", &stat_buf) != 0 ||
1396 stat("/dev/zero", &stat_buf) != 0) {
1397 /* try devtmpfs first, otherwise fall back to manual creation */
1398 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1399 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1400 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1401 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1402 }
1403 }
1404 }
1405
1406 /* If no /dev/console was found before calling init, stdio is closed so
1407 * we need to reopen it from /dev/console. If it failed above, it will
1408 * still fail here and we cannot emit a message anyway.
1409 */
1410 if (close(dup(1)) == -1) {
1411 int fd = open("/dev/console", O_RDWR);
1412
1413 if (fd >= 0) {
1414 if (fd != 0)
1415 dup2(fd, 0);
1416 if (fd != 1)
1417 dup2(fd, 1);
1418 if (fd != 2)
1419 dup2(fd, 2);
1420 if (fd > 2)
1421 close(fd);
1422 puts("\nSuccessfully reopened /dev/console.");
1423 }
1424 }
1425
1426 /* try to mount /proc if not mounted. Silently fail otherwise */
1427 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1428 if (stat("/proc/self", &stat_buf) != 0) {
1429 /* If not mountable, remove /proc completely to avoid misuse */
1430 if (mount("none", "/proc", "proc", 0, 0) != 0)
1431 rmdir("/proc");
1432 }
1433 }
1434
1435 /* some tests rely on a writable /tmp */
1436 mkdir("/tmp", 0755);
1437
1438 return 0;
1439 }
1440
1441 /* This is the definition of known test names, with their functions */
1442 static const struct test test_names[] = {
1443 /* add new tests here */
1444 { .name = "startup", .func = run_startup },
1445 { .name = "syscall", .func = run_syscall },
1446 { .name = "stdlib", .func = run_stdlib },
1447 { .name = "vfprintf", .func = run_vfprintf },
1448 { .name = "protection", .func = run_protection },
1449 { 0 }
1450 };
1451
is_setting_valid(char * test)1452 static int is_setting_valid(char *test)
1453 {
1454 int idx, len, test_len, valid = 0;
1455 char delimiter;
1456
1457 if (!test)
1458 return valid;
1459
1460 test_len = strlen(test);
1461
1462 for (idx = 0; test_names[idx].name; idx++) {
1463 len = strlen(test_names[idx].name);
1464 if (test_len < len)
1465 continue;
1466
1467 if (strncmp(test, test_names[idx].name, len) != 0)
1468 continue;
1469
1470 delimiter = test[len];
1471 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1472 continue;
1473
1474 valid = 1;
1475 break;
1476 }
1477
1478 return valid;
1479 }
1480
main(int argc,char ** argv,char ** envp)1481 int main(int argc, char **argv, char **envp)
1482 {
1483 int min = 0;
1484 int max = INT_MAX;
1485 int ret = 0;
1486 int err;
1487 int idx;
1488 char *test;
1489
1490 argv0 = argv[0];
1491 test_argc = argc;
1492 test_argv = argv;
1493 test_envp = envp;
1494
1495 /* when called as init, it's possible that no console was opened, for
1496 * example if no /dev file system was provided. We'll check that fd#1
1497 * was opened, and if not we'll attempt to create and open /dev/console
1498 * and /dev/null that we'll use for later tests.
1499 */
1500 if (getpid() == 1)
1501 prepare();
1502
1503 /* the definition of a series of tests comes from either argv[1] or the
1504 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1505 * series of test names and optional ranges:
1506 * syscall:5-15[:.*],stdlib:8-10
1507 */
1508 test = argv[1];
1509 if (!is_setting_valid(test))
1510 test = getenv("NOLIBC_TEST");
1511
1512 if (is_setting_valid(test)) {
1513 char *comma, *colon, *dash, *value;
1514
1515 do {
1516 comma = strchr(test, ',');
1517 if (comma)
1518 *(comma++) = '\0';
1519
1520 colon = strchr(test, ':');
1521 if (colon)
1522 *(colon++) = '\0';
1523
1524 for (idx = 0; test_names[idx].name; idx++) {
1525 if (strcmp(test, test_names[idx].name) == 0)
1526 break;
1527 }
1528
1529 if (test_names[idx].name) {
1530 /* The test was named, it will be called at least
1531 * once. We may have an optional range at <colon>
1532 * here, which defaults to the full range.
1533 */
1534 do {
1535 min = 0; max = INT_MAX;
1536 value = colon;
1537 if (value && *value) {
1538 colon = strchr(value, ':');
1539 if (colon)
1540 *(colon++) = '\0';
1541
1542 dash = strchr(value, '-');
1543 if (dash)
1544 *(dash++) = '\0';
1545
1546 /* support :val: :min-max: :min-: :-max: */
1547 if (*value)
1548 min = atoi(value);
1549 if (!dash)
1550 max = min;
1551 else if (*dash)
1552 max = atoi(dash);
1553
1554 value = colon;
1555 }
1556
1557 /* now's time to call the test */
1558 printf("Running test '%s'\n", test_names[idx].name);
1559 err = test_names[idx].func(min, max);
1560 ret += err;
1561 printf("Errors during this test: %d\n\n", err);
1562 } while (colon && *colon);
1563 } else
1564 printf("Ignoring unknown test name '%s'\n", test);
1565
1566 test = comma;
1567 } while (test && *test);
1568 } else {
1569 /* no test mentioned, run everything */
1570 for (idx = 0; test_names[idx].name; idx++) {
1571 printf("Running test '%s'\n", test_names[idx].name);
1572 err = test_names[idx].func(min, max);
1573 ret += err;
1574 printf("Errors during this test: %d\n\n", err);
1575 }
1576 }
1577
1578 printf("Total number of errors: %d\n", ret);
1579
1580 if (getpid() == 1) {
1581 /* we're running as init, there's no other process on the
1582 * system, thus likely started from a VM for a quick check.
1583 * Exiting will provoke a kernel panic that may be reported
1584 * as an error by Qemu or the hypervisor, while stopping
1585 * cleanly will often be reported as a success. This allows
1586 * to use the output of this program for bisecting kernels.
1587 */
1588 printf("Leaving init with final status: %d\n", !!ret);
1589 if (ret == 0)
1590 reboot(RB_POWER_OFF);
1591 #if defined(__x86_64__)
1592 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1593 * exit with status code 2N+1 when N is written to 0x501. We
1594 * hard-code the syscall here as it's arch-dependent.
1595 */
1596 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
1597 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
1598 /* if it does nothing, fall back to the regular panic */
1599 #endif
1600 }
1601
1602 printf("Exiting with status %d\n", !!ret);
1603 return !!ret;
1604 }
1605