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/utsname.h>
29 #include <sys/wait.h>
30 #include <dirent.h>
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <poll.h>
34 #include <sched.h>
35 #include <signal.h>
36 #include <stdarg.h>
37 #include <stddef.h>
38 #include <stdint.h>
39 #include <time.h>
40 #include <unistd.h>
41 #include <limits.h>
42 #include <ctype.h>
43
44 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
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 << 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 int ret = 0;
1287 void *p1, *p2;
1288 int has_gettid = 1;
1289 int has_brk;
1290
1291 /* <proc> indicates whether or not /proc is mounted */
1292 proc = stat("/proc", &stat_buf) == 0;
1293
1294 /* this will be used to skip certain tests that can't be run unprivileged */
1295 euid0 = geteuid() == 0;
1296
1297 /* from 2.30, glibc provides gettid() */
1298 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
1299 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
1300 #endif
1301
1302 /* on musl setting brk()/sbrk() always fails */
1303 has_brk = brk(0) == 0;
1304
1305 for (test = min; test >= 0 && test <= max; test++) {
1306 int llen = 0; /* line length */
1307
1308 /* avoid leaving empty lines below, this will insert holes into
1309 * test numbers.
1310 */
1311 switch (test + __LINE__ + 1) {
1312 CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break;
1313 CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break;
1314 CASE_TEST(clock_getres); EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break;
1315 CASE_TEST(clock_gettime); EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break;
1316 CASE_TEST(clock_settime); EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break;
1317 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
1318 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1319 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
1320 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
1321 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
1322 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1323 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1324 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
1325 CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
1326 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
1327 CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
1328 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
1329 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
1330 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
1331 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
1332 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
1333 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
1334 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
1335 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
1336 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
1337 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
1338 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
1339 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1340 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1341 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1342 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1343 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1344 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1345 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
1346 CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break;
1347 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break;
1348 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
1349 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1350 CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break;
1351 CASE_TEST(getrandom); EXPECT_SYSZR(1, test_getrandom()); break;
1352 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
1353 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
1354 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
1355 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1356 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1357 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1358 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1359 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1360 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1361 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1362 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1363 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1364 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1365 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
1366 CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break;
1367 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break;
1368 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break;
1369 CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break;
1370 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
1371 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1372 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1373 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1374 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1375 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1376 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
1377 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1378 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
1379 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1380 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;
1381 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1382 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1383 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1384 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
1385 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1386 CASE_TEST(timer); EXPECT_SYSZR(1, test_timer()); break;
1387 CASE_TEST(timerfd); EXPECT_SYSZR(1, test_timerfd()); break;
1388 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
1389 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1390 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1391 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1392 CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break;
1393 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1394 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1395 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1396 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1397 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1398 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1399 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1400 CASE_TEST(namespace); EXPECT_SYSZR(euid0 && proc, test_namespace()); break;
1401 case __LINE__:
1402 return ret; /* must be last */
1403 /* note: do not set any defaults so as to permit holes above */
1404 }
1405 }
1406 return ret;
1407 }
1408
test_difftime(void)1409 int test_difftime(void)
1410 {
1411 if (difftime(200., 100.) != 100.)
1412 return 1;
1413
1414 if (difftime(100., 200.) != -100.)
1415 return 1;
1416
1417 return 0;
1418 }
1419
run_stdlib(int min,int max)1420 int run_stdlib(int min, int max)
1421 {
1422 int test;
1423 int ret = 0;
1424
1425 for (test = min; test >= 0 && test <= max; test++) {
1426 int llen = 0; /* line length */
1427
1428 /* For functions that take a long buffer, like strlcat()
1429 * Add some more chars after the \0, to test functions that overwrite the buffer set
1430 * the \0 at the exact right position.
1431 */
1432 char buf[11] = "test123456";
1433 buf[4] = '\0';
1434
1435
1436 /* avoid leaving empty lines below, this will insert holes into
1437 * test numbers.
1438 */
1439 switch (test + __LINE__ + 1) {
1440 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
1441 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1442 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1443 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1444 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1445 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1446 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1447 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1448 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1449 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1450 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1451 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1452 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1453 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1454 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1455 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1456 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1457 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1458 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1459 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1460 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1461 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1462 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1463 CASE_TEST(strstr_foobar_foo); EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break;
1464 CASE_TEST(strstr_foobar_bar); EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break;
1465 CASE_TEST(strstr_foobar_baz); EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break;
1466 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1467 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1468 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1469 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1470 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1471 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1472 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1473 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1474 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1475 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1476 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1477 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1478 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1479 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1480 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1481 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1482 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1483 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1484 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1485 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1486 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1487 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1488 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1489 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1490 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1491 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1492 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1493 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1494 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1495 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1496 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1497 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1498 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1499 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1500 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1501 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1502 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1503 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1504 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1505 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1506 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1507 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1508 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1509 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1510 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1511 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1512 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1513 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1514 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1515 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1516 CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
1517 CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
1518 CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
1519 CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
1520 CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
1521 CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
1522 CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
1523 CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
1524 CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
1525 CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
1526 CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
1527 CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
1528 CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
1529 CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
1530 CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
1531 CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
1532 CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
1533 CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
1534 CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
1535 CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
1536 CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break;
1537 CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break;
1538 CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break;
1539 CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break;
1540 CASE_TEST(abs); EXPECT_EQ(1, abs(-10), 10); break;
1541 CASE_TEST(abs_noop); EXPECT_EQ(1, abs(10), 10); break;
1542 CASE_TEST(difftime); EXPECT_ZR(1, test_difftime()); break;
1543
1544 case __LINE__:
1545 return ret; /* must be last */
1546 /* note: do not set any defaults so as to permit holes above */
1547 }
1548 }
1549 return ret;
1550 }
1551
1552 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1553 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1554
expect_vfprintf(int llen,int c,const char * expected,const char * fmt,...)1555 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1556 {
1557 char buf[100];
1558 va_list args;
1559 ssize_t w;
1560 int ret;
1561
1562
1563 va_start(args, fmt);
1564 /* Only allow writing 21 bytes, to test truncation */
1565 w = vsnprintf(buf, 21, fmt, args);
1566 va_end(args);
1567
1568 if (w != c) {
1569 llen += printf(" written(%d) != %d", (int)w, c);
1570 result(llen, FAIL);
1571 return 1;
1572 }
1573
1574 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1575 ret = strncmp(expected, buf, c);
1576
1577 result(llen, ret ? FAIL : OK);
1578 return ret;
1579 }
1580
test_scanf(void)1581 static int test_scanf(void)
1582 {
1583 unsigned long long ull;
1584 unsigned long ul;
1585 unsigned int u;
1586 long long ll;
1587 long l;
1588 void *p;
1589 int i;
1590
1591 /* return __LINE__ to point to the specific failure */
1592
1593 /* test EOF */
1594 if (sscanf("", "foo") != EOF)
1595 return __LINE__;
1596
1597 /* test simple literal without placeholder */
1598 if (sscanf("foo", "foo") != 0)
1599 return __LINE__;
1600
1601 /* test single placeholder */
1602 if (sscanf("123", "%d", &i) != 1)
1603 return __LINE__;
1604
1605 if (i != 123)
1606 return __LINE__;
1607
1608 /* test multiple place holders and separators */
1609 if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3)
1610 return __LINE__;
1611
1612 if (i != 123)
1613 return __LINE__;
1614
1615 if (u != 456)
1616 return __LINE__;
1617
1618 if (p != (void *)0x90)
1619 return __LINE__;
1620
1621 /* test space handling */
1622 if (sscanf("a b1", "a b%d", &i) != 1)
1623 return __LINE__;
1624
1625 if (i != 1)
1626 return __LINE__;
1627
1628 /* test literal percent */
1629 if (sscanf("a%1", "a%%%d", &i) != 1)
1630 return __LINE__;
1631
1632 if (i != 1)
1633 return __LINE__;
1634
1635 /* test stdint.h types */
1636 if (sscanf("1|2|3|4|5|6",
1637 "%d|%ld|%lld|%u|%lu|%llu",
1638 &i, &l, &ll, &u, &ul, &ull) != 6)
1639 return __LINE__;
1640
1641 if (i != 1 || l != 2 || ll != 3 ||
1642 u != 4 || ul != 5 || ull != 6)
1643 return __LINE__;
1644
1645 return 0;
1646 }
1647
test_strerror(void)1648 int test_strerror(void)
1649 {
1650 char buf[100];
1651 ssize_t ret;
1652
1653 memset(buf, 'A', sizeof(buf));
1654
1655 errno = EINVAL;
1656 ret = snprintf(buf, sizeof(buf), "%m");
1657 if (is_nolibc) {
1658 if (ret < 6 || memcmp(buf, "errno=", 6))
1659 return 1;
1660 }
1661
1662 return 0;
1663 }
1664
test_printf_error(void)1665 static int test_printf_error(void)
1666 {
1667 int fd, ret, saved_errno;
1668
1669 fd = open("/dev/full", O_RDWR);
1670 if (fd == -1)
1671 return 1;
1672
1673 errno = 0;
1674 ret = dprintf(fd, "foo");
1675 saved_errno = errno;
1676 close(fd);
1677
1678 if (ret != -1)
1679 return 2;
1680
1681 if (saved_errno != ENOSPC)
1682 return 3;
1683
1684 return 0;
1685 }
1686
run_printf(int min,int max)1687 static int run_printf(int min, int max)
1688 {
1689 int test;
1690 int ret = 0;
1691
1692 for (test = min; test >= 0 && test <= max; test++) {
1693 int llen = 0; /* line length */
1694
1695 /* avoid leaving empty lines below, this will insert holes into
1696 * test numbers.
1697 */
1698 switch (test + __LINE__ + 1) {
1699 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1700 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1701 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1702 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1703 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1704 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1705 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1706 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1707 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1708 CASE_TEST(uintmax_t); EXPECT_VFPRINTF(20, "18446744073709551615", "%ju", 0xffffffffffffffffULL); break;
1709 CASE_TEST(intmax_t); EXPECT_VFPRINTF(20, "-9223372036854775807", "%jd", 0x8000000000000001LL); break;
1710 CASE_TEST(truncation); EXPECT_VFPRINTF(25, "01234567890123456789", "%s", "0123456789012345678901234"); break;
1711 CASE_TEST(string_width); EXPECT_VFPRINTF(10, " 1", "%10s", "1"); break;
1712 CASE_TEST(number_width); EXPECT_VFPRINTF(10, " 1", "%10d", 1); break;
1713 CASE_TEST(width_trunc); EXPECT_VFPRINTF(25, " ", "%25d", 1); break;
1714 CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break;
1715 CASE_TEST(strerror); EXPECT_ZR(1, test_strerror()); break;
1716 CASE_TEST(printf_error); EXPECT_ZR(1, test_printf_error()); break;
1717 case __LINE__:
1718 return ret; /* must be last */
1719 /* note: do not set any defaults so as to permit holes above */
1720 }
1721 }
1722 return ret;
1723 }
1724
1725 __attribute__((no_sanitize("undefined")))
smash_stack(void)1726 static int smash_stack(void)
1727 {
1728 char buf[100];
1729 volatile char *ptr = buf;
1730 size_t i;
1731
1732 for (i = 0; i < 200; i++)
1733 ptr[i] = 'P';
1734
1735 return 1;
1736 }
1737
run_protection(int min,int max)1738 static int run_protection(int min __attribute__((unused)),
1739 int max __attribute__((unused)))
1740 {
1741 pid_t pid;
1742 int llen = 0, status;
1743 struct rlimit rlimit = { 0, 0 };
1744
1745 llen += printf("0 -fstackprotector ");
1746
1747 #if !defined(_NOLIBC_STACKPROTECTOR)
1748 llen += printf("not supported");
1749 result(llen, SKIPPED);
1750 return 0;
1751 #endif
1752
1753 #if defined(_NOLIBC_STACKPROTECTOR)
1754 if (!__stack_chk_guard) {
1755 llen += printf("__stack_chk_guard not initialized");
1756 result(llen, FAIL);
1757 return 1;
1758 }
1759 #endif
1760
1761 pid = -1;
1762 pid = fork();
1763
1764 switch (pid) {
1765 case -1:
1766 llen += printf("fork()");
1767 result(llen, FAIL);
1768 return 1;
1769
1770 case 0:
1771 close(STDOUT_FILENO);
1772 close(STDERR_FILENO);
1773
1774 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1775 setrlimit(RLIMIT_CORE, &rlimit);
1776 smash_stack();
1777 return 1;
1778
1779 default:
1780 pid = waitpid(pid, &status, 0);
1781
1782 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1783 llen += printf("waitpid()");
1784 result(llen, FAIL);
1785 return 1;
1786 }
1787 result(llen, OK);
1788 return 0;
1789 }
1790 }
1791
1792 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
prepare(void)1793 int prepare(void)
1794 {
1795 struct stat stat_buf;
1796
1797 /* It's possible that /dev doesn't even exist or was not mounted, so
1798 * we'll try to create it, mount it, or create minimal entries into it.
1799 * We want at least /dev/null and /dev/console.
1800 */
1801 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1802 if (stat("/dev/console", &stat_buf) != 0 ||
1803 stat("/dev/null", &stat_buf) != 0 ||
1804 stat("/dev/zero", &stat_buf) != 0 ||
1805 stat("/dev/full", &stat_buf) != 0) {
1806 /* try devtmpfs first, otherwise fall back to manual creation */
1807 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1808 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1809 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1810 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1811 mknod("/dev/full", 0666 | S_IFCHR, makedev(1, 7));
1812 }
1813 }
1814 }
1815
1816 /* If no /dev/console was found before calling init, stdio is closed so
1817 * we need to reopen it from /dev/console. If it failed above, it will
1818 * still fail here and we cannot emit a message anyway.
1819 */
1820 if (close(dup(1)) == -1) {
1821 int fd = open("/dev/console", O_RDWR);
1822
1823 if (fd >= 0) {
1824 if (fd != 0)
1825 dup2(fd, 0);
1826 if (fd != 1)
1827 dup2(fd, 1);
1828 if (fd != 2)
1829 dup2(fd, 2);
1830 if (fd > 2)
1831 close(fd);
1832 puts("\nSuccessfully reopened /dev/console.");
1833 }
1834 }
1835
1836 /* try to mount /proc if not mounted. Silently fail otherwise */
1837 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1838 if (stat("/proc/self", &stat_buf) != 0) {
1839 /* If not mountable, remove /proc completely to avoid misuse */
1840 if (mount("none", "/proc", "proc", 0, 0) != 0)
1841 rmdir("/proc");
1842 }
1843 }
1844
1845 /* some tests rely on a writable /tmp */
1846 mkdir("/tmp", 0755);
1847
1848 return 0;
1849 }
1850
1851 /* This is the definition of known test names, with their functions */
1852 static const struct test test_names[] = {
1853 /* add new tests here */
1854 { .name = "startup", .func = run_startup },
1855 { .name = "syscall", .func = run_syscall },
1856 { .name = "stdlib", .func = run_stdlib },
1857 { .name = "printf", .func = run_printf },
1858 { .name = "protection", .func = run_protection },
1859 { 0 }
1860 };
1861
is_setting_valid(char * test)1862 static int is_setting_valid(char *test)
1863 {
1864 int idx, len, test_len, valid = 0;
1865 char delimiter;
1866
1867 if (!test)
1868 return valid;
1869
1870 test_len = strlen(test);
1871
1872 for (idx = 0; test_names[idx].name; idx++) {
1873 len = strlen(test_names[idx].name);
1874 if (test_len < len)
1875 continue;
1876
1877 if (strncmp(test, test_names[idx].name, len) != 0)
1878 continue;
1879
1880 delimiter = test[len];
1881 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1882 continue;
1883
1884 valid = 1;
1885 break;
1886 }
1887
1888 return valid;
1889 }
1890
main(int argc,char ** argv,char ** envp)1891 int main(int argc, char **argv, char **envp)
1892 {
1893 int min = 0;
1894 int max = INT_MAX;
1895 int ret = 0;
1896 int err;
1897 int idx;
1898 char *test;
1899
1900 argv0 = argv[0];
1901 test_argc = argc;
1902 test_argv = argv;
1903 test_envp = envp;
1904
1905 /* when called as init, it's possible that no console was opened, for
1906 * example if no /dev file system was provided. We'll check that fd#1
1907 * was opened, and if not we'll attempt to create and open /dev/console
1908 * and /dev/null that we'll use for later tests.
1909 */
1910 if (getpid() == 1)
1911 prepare();
1912
1913 /* the definition of a series of tests comes from either argv[1] or the
1914 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1915 * series of test names and optional ranges:
1916 * syscall:5-15[:.*],stdlib:8-10
1917 */
1918 test = argv[1];
1919 if (!is_setting_valid(test))
1920 test = getenv("NOLIBC_TEST");
1921
1922 if (is_setting_valid(test)) {
1923 char *comma, *colon, *dash, *value;
1924
1925 do {
1926 comma = strchr(test, ',');
1927 if (comma)
1928 *(comma++) = '\0';
1929
1930 colon = strchr(test, ':');
1931 if (colon)
1932 *(colon++) = '\0';
1933
1934 for (idx = 0; test_names[idx].name; idx++) {
1935 if (strcmp(test, test_names[idx].name) == 0)
1936 break;
1937 }
1938
1939 if (test_names[idx].name) {
1940 /* The test was named, it will be called at least
1941 * once. We may have an optional range at <colon>
1942 * here, which defaults to the full range.
1943 */
1944 do {
1945 min = 0; max = INT_MAX;
1946 value = colon;
1947 if (value && *value) {
1948 colon = strchr(value, ':');
1949 if (colon)
1950 *(colon++) = '\0';
1951
1952 dash = strchr(value, '-');
1953 if (dash)
1954 *(dash++) = '\0';
1955
1956 /* support :val: :min-max: :min-: :-max: */
1957 if (*value)
1958 min = atoi(value);
1959 if (!dash)
1960 max = min;
1961 else if (*dash)
1962 max = atoi(dash);
1963
1964 value = colon;
1965 }
1966
1967 /* now's time to call the test */
1968 printf("Running test '%s'\n", test_names[idx].name);
1969 err = test_names[idx].func(min, max);
1970 ret += err;
1971 printf("Errors during this test: %d\n\n", err);
1972 } while (colon && *colon);
1973 } else
1974 printf("Ignoring unknown test name '%s'\n", test);
1975
1976 test = comma;
1977 } while (test && *test);
1978 } else {
1979 /* no test mentioned, run everything */
1980 for (idx = 0; test_names[idx].name; idx++) {
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 }
1986 }
1987
1988 printf("Total number of errors: %d\n", ret);
1989
1990 if (getpid() == 1) {
1991 /* we're running as init, there's no other process on the
1992 * system, thus likely started from a VM for a quick check.
1993 * Exiting will provoke a kernel panic that may be reported
1994 * as an error by Qemu or the hypervisor, while stopping
1995 * cleanly will often be reported as a success. This allows
1996 * to use the output of this program for bisecting kernels.
1997 */
1998 printf("Leaving init with final status: %d\n", !!ret);
1999 if (ret == 0)
2000 reboot(RB_POWER_OFF);
2001 #if defined(__x86_64__)
2002 /* QEMU started with "-device isa-debug-exit -no-reboot" will
2003 * exit with status code 2N+1 when N is written to 0x501. We
2004 * hard-code the syscall here as it's arch-dependent.
2005 */
2006 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
2007 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
2008 /* if it does nothing, fall back to the regular panic */
2009 #endif
2010 }
2011
2012 printf("Exiting with status %d\n", !!ret);
2013 return !!ret;
2014 }
2015