xref: /linux/tools/testing/selftests/nolibc/nolibc-test.c (revision ee60c510fb3468ec6fab98419218c4e7b37e2ca3) 
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/ptrace.h>
21 #include <sys/random.h>
22 #include <sys/reboot.h>
23 #include <sys/resource.h>
24 #include <sys/stat.h>
25 #include <sys/syscall.h>
26 #include <sys/sysmacros.h>
27 #include <sys/time.h>
28 #include <sys/timerfd.h>
29 #include <sys/uio.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 <time.h>
42 #include <unistd.h>
43 #include <limits.h>
44 #include <ctype.h>
45 #include <stdbool.h>
46 #include <byteswap.h>
47 #include <endian.h>
48 
49 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
50 
51 #include "nolibc-test-linkage.h"
52 
53 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
54 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
55 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
56 
57 /* will be used to test initialization of environ */
58 static char **test_envp;
59 
60 /* will be used to test initialization of argv */
61 static char **test_argv;
62 
63 /* will be used to test initialization of argc */
64 static int test_argc;
65 
66 /* will be used by some test cases as readable file, please don't write it */
67 static const char *argv0;
68 
69 /* will be used by constructor tests */
70 static int constructor_test_value;
71 
72 static const int is_le = __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__;
73 
74 static const int is_nolibc =
75 #ifdef NOLIBC
76 	1
77 #else
78 	0
79 #endif
80 ;
81 
82 static const int is_glibc =
83 #ifdef __GLIBC__
84 	1
85 #else
86 	0
87 #endif
88 ;
89 
90 #if !defined(NOLIBC)
91 /* Some disabled tests may not compile. */
92 
93 /* strlcat() and strlcpy() may not be in the system headers. */
94 #undef strlcat
95 #undef strlcpy
96 #define strlcat(d, s, l) 0
97 #define strlcpy(d, s, l) 0
98 
99 /* readdir_r() is likely to be marked deprecated */
100 #undef readdir_r
101 #define readdir_r(dir, dirent, result) ((errno = EINVAL), -1)
102 
103 #define _syscall(...) 0
104 #endif
105 
106 /* definition of a series of tests */
107 struct test {
108 	const char *name;              /* test name */
109 	int (*func)(int min, int max); /* handler */
110 };
111 
112 #ifndef _NOLIBC_STDLIB_H
itoa(int i)113 char *itoa(int i)
114 {
115 	static char buf[12];
116 	int ret;
117 
118 	ret = snprintf(buf, sizeof(buf), "%d", i);
119 	return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
120 }
121 #endif
122 
123 #define CASE_ERR(err) \
124 	case err: return #err
125 
126 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
127  * or the decimal value for less common ones.
128  */
errorname(int err)129 static const char *errorname(int err)
130 {
131 	switch (err) {
132 	case 0: return "SUCCESS";
133 	CASE_ERR(EPERM);
134 	CASE_ERR(ENOENT);
135 	CASE_ERR(ESRCH);
136 	CASE_ERR(EINTR);
137 	CASE_ERR(EIO);
138 	CASE_ERR(ENXIO);
139 	CASE_ERR(E2BIG);
140 	CASE_ERR(ENOEXEC);
141 	CASE_ERR(EBADF);
142 	CASE_ERR(ECHILD);
143 	CASE_ERR(EAGAIN);
144 	CASE_ERR(ENOMEM);
145 	CASE_ERR(EACCES);
146 	CASE_ERR(EFAULT);
147 	CASE_ERR(ENOTBLK);
148 	CASE_ERR(EBUSY);
149 	CASE_ERR(EEXIST);
150 	CASE_ERR(EXDEV);
151 	CASE_ERR(ENODEV);
152 	CASE_ERR(ENOTDIR);
153 	CASE_ERR(EISDIR);
154 	CASE_ERR(EINVAL);
155 	CASE_ERR(ENFILE);
156 	CASE_ERR(EMFILE);
157 	CASE_ERR(ENOTTY);
158 	CASE_ERR(ETXTBSY);
159 	CASE_ERR(EFBIG);
160 	CASE_ERR(ENOSPC);
161 	CASE_ERR(ESPIPE);
162 	CASE_ERR(EROFS);
163 	CASE_ERR(EMLINK);
164 	CASE_ERR(EPIPE);
165 	CASE_ERR(EDOM);
166 	CASE_ERR(ERANGE);
167 	CASE_ERR(ENOSYS);
168 	CASE_ERR(EOVERFLOW);
169 	default:
170 		return itoa(err);
171 	}
172 }
173 
174 enum RESULT {
175 	OK,
176 	FAIL,
177 	SKIPPED,
178 };
179 
result(int llen,enum RESULT r)180 static void result(int llen, enum RESULT r)
181 {
182 	const char *msg;
183 
184 	if (r == OK)
185 		msg = "  [OK]";
186 	else if (r == SKIPPED)
187 		msg = "[SKIPPED]";
188 	else
189 		msg = " [FAIL]";
190 
191 	llen = 64 - llen;
192 	if (llen < 0)
193 		llen = 0;
194 	printf("%*s%s\n", llen, "", msg);
195 }
196 
197 /* The tests below are intended to be used by the macroes, which evaluate
198  * expression <expr>, print the status to stdout, and update the "ret"
199  * variable to count failures. The functions themselves return the number
200  * of failures, thus either 0 or 1.
201  */
202 
203 #define EXPECT_ZR(cond, expr)				\
204 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
205 
206 static __attribute__((unused))
expect_zr(int expr,int llen)207 int expect_zr(int expr, int llen)
208 {
209 	int ret = !(expr == 0);
210 
211 	llen += printf(" = %d ", expr);
212 	result(llen, ret ? FAIL : OK);
213 	return ret;
214 }
215 
216 
217 #define EXPECT_NZ(cond, expr)				\
218 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen); } while (0)
219 
220 static __attribute__((unused))
expect_nz(int expr,int llen)221 int expect_nz(int expr, int llen)
222 {
223 	int ret = !(expr != 0);
224 
225 	llen += printf(" = %d ", expr);
226 	result(llen, ret ? FAIL : OK);
227 	return ret;
228 }
229 
230 
231 #define EXPECT_EQ(cond, expr, val)				\
232 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
233 
234 static __attribute__((unused))
expect_eq(uint64_t expr,int llen,uint64_t val)235 int expect_eq(uint64_t expr, int llen, uint64_t val)
236 {
237 	int ret = !(expr == val);
238 
239 	llen += printf(" = %lld ", (long long)expr);
240 	result(llen, ret ? FAIL : OK);
241 	return ret;
242 }
243 
244 
245 #define EXPECT_NE(cond, expr, val)				\
246 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
247 
248 static __attribute__((unused))
expect_ne(int expr,int llen,int val)249 int expect_ne(int expr, int llen, int val)
250 {
251 	int ret = !(expr != val);
252 
253 	llen += printf(" = %d ", expr);
254 	result(llen, ret ? FAIL : OK);
255 	return ret;
256 }
257 
258 
259 #define EXPECT_GE(cond, expr, val)				\
260 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
261 
262 static __attribute__((unused))
expect_ge(int expr,int llen,int val)263 int expect_ge(int expr, int llen, int val)
264 {
265 	int ret = !(expr >= val);
266 
267 	llen += printf(" = %d ", expr);
268 	result(llen, ret ? FAIL : OK);
269 	return ret;
270 }
271 
272 
273 #define EXPECT_GT(cond, expr, val)				\
274 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
275 
276 static __attribute__((unused))
expect_gt(int expr,int llen,int val)277 int expect_gt(int expr, int llen, int val)
278 {
279 	int ret = !(expr > val);
280 
281 	llen += printf(" = %d ", expr);
282 	result(llen, ret ? FAIL : OK);
283 	return ret;
284 }
285 
286 
287 #define EXPECT_LE(cond, expr, val)				\
288 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
289 
290 static __attribute__((unused))
expect_le(int expr,int llen,int val)291 int expect_le(int expr, int llen, int val)
292 {
293 	int ret = !(expr <= val);
294 
295 	llen += printf(" = %d ", expr);
296 	result(llen, ret ? FAIL : OK);
297 	return ret;
298 }
299 
300 
301 #define EXPECT_LT(cond, expr, val)				\
302 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
303 
304 static __attribute__((unused))
expect_lt(int expr,int llen,int val)305 int expect_lt(int expr, int llen, int val)
306 {
307 	int ret = !(expr < val);
308 
309 	llen += printf(" = %d ", expr);
310 	result(llen, ret ? FAIL : OK);
311 	return ret;
312 }
313 
314 
315 #define EXPECT_SYSZR(cond, expr)				\
316 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
317 
318 static __attribute__((unused))
expect_syszr(int expr,int llen)319 int expect_syszr(int expr, int llen)
320 {
321 	int ret = 0;
322 
323 	if (expr) {
324 		ret = 1;
325 		llen += printf(" = %d %s ", expr, errorname(errno));
326 		result(llen, FAIL);
327 	} else {
328 		llen += printf(" = %d ", expr);
329 		result(llen, OK);
330 	}
331 	return ret;
332 }
333 
334 
335 #define EXPECT_SYSEQ(cond, expr, val)				\
336 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
337 
338 static __attribute__((unused))
expect_syseq(int expr,int llen,int val)339 int expect_syseq(int expr, int llen, int val)
340 {
341 	int ret = 0;
342 
343 	if (expr != val) {
344 		ret = 1;
345 		llen += printf(" = %d %s ", expr, errorname(errno));
346 		result(llen, FAIL);
347 	} else {
348 		llen += printf(" = %d ", expr);
349 		result(llen, OK);
350 	}
351 	return ret;
352 }
353 
354 
355 #define EXPECT_SYSNE(cond, expr, val)				\
356 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
357 
358 static __attribute__((unused))
expect_sysne(int expr,int llen,int val)359 int expect_sysne(int expr, int llen, int val)
360 {
361 	int ret = 0;
362 
363 	if (expr == val) {
364 		ret = 1;
365 		llen += printf(" = %d %s ", expr, errorname(errno));
366 		result(llen, FAIL);
367 	} else {
368 		llen += printf(" = %d ", expr);
369 		result(llen, OK);
370 	}
371 	return ret;
372 }
373 
374 
375 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2)		\
376 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
377 
378 #define EXPECT_SYSER(cond, expr, expret, experr)			\
379 	EXPECT_SYSER2(cond, expr, expret, experr, 0)
380 
381 static __attribute__((unused))
expect_syserr2(int expr,int expret,int experr1,int experr2,int llen)382 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
383 {
384 	int ret = 0;
385 	int _errno = errno;
386 
387 	llen += printf(" = %d %s ", expr, errorname(_errno));
388 	if (expr != expret || (_errno != experr1 && _errno != experr2)) {
389 		ret = 1;
390 		if (experr2 == 0)
391 			llen += printf(" != (%d %s) ", expret, errorname(experr1));
392 		else
393 			llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
394 		result(llen, FAIL);
395 	} else {
396 		result(llen, OK);
397 	}
398 	return ret;
399 }
400 
401 
402 #define EXPECT_PTRZR(cond, expr)				\
403 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
404 
405 static __attribute__((unused))
expect_ptrzr(const void * expr,int llen)406 int expect_ptrzr(const void *expr, int llen)
407 {
408 	int ret = 0;
409 
410 	llen += printf(" = <%p> ", expr);
411 	if (expr) {
412 		ret = 1;
413 		result(llen, FAIL);
414 	} else {
415 		result(llen, OK);
416 	}
417 	return ret;
418 }
419 
420 
421 #define EXPECT_PTRNZ(cond, expr)				\
422 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
423 
424 static __attribute__((unused))
expect_ptrnz(const void * expr,int llen)425 int expect_ptrnz(const void *expr, int llen)
426 {
427 	int ret = 0;
428 
429 	llen += printf(" = <%p> ", expr);
430 	if (!expr) {
431 		ret = 1;
432 		result(llen, FAIL);
433 	} else {
434 		result(llen, OK);
435 	}
436 	return ret;
437 }
438 
439 #define EXPECT_PTREQ(cond, expr, cmp)				\
440 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
441 
442 static __attribute__((unused))
expect_ptreq(const void * expr,int llen,const void * cmp)443 int expect_ptreq(const void *expr, int llen, const void *cmp)
444 {
445 	int ret = 0;
446 
447 	llen += printf(" = <%p> ", expr);
448 	if (expr != cmp) {
449 		ret = 1;
450 		result(llen, FAIL);
451 	} else {
452 		result(llen, OK);
453 	}
454 	return ret;
455 }
456 
457 #define EXPECT_PTRNE(cond, expr, cmp)				\
458 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
459 
460 static __attribute__((unused))
expect_ptrne(const void * expr,int llen,const void * cmp)461 int expect_ptrne(const void *expr, int llen, const void *cmp)
462 {
463 	int ret = 0;
464 
465 	llen += printf(" = <%p> ", expr);
466 	if (expr == cmp) {
467 		ret = 1;
468 		result(llen, FAIL);
469 	} else {
470 		result(llen, OK);
471 	}
472 	return ret;
473 }
474 
475 #define EXPECT_PTRGE(cond, expr, cmp)				\
476 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
477 
478 static __attribute__((unused))
expect_ptrge(const void * expr,int llen,const void * cmp)479 int expect_ptrge(const void *expr, int llen, const void *cmp)
480 {
481 	int ret = !(expr >= cmp);
482 
483 	llen += printf(" = <%p> ", expr);
484 	result(llen, ret ? FAIL : OK);
485 	return ret;
486 }
487 
488 #define EXPECT_PTRGT(cond, expr, cmp)				\
489 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
490 
491 static __attribute__((unused))
expect_ptrgt(const void * expr,int llen,const void * cmp)492 int expect_ptrgt(const void *expr, int llen, const void *cmp)
493 {
494 	int ret = !(expr > cmp);
495 
496 	llen += printf(" = <%p> ", expr);
497 	result(llen, ret ? FAIL : OK);
498 	return ret;
499 }
500 
501 
502 #define EXPECT_PTRLE(cond, expr, cmp)				\
503 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
504 
505 static __attribute__((unused))
expect_ptrle(const void * expr,int llen,const void * cmp)506 int expect_ptrle(const void *expr, int llen, const void *cmp)
507 {
508 	int ret = !(expr <= cmp);
509 
510 	llen += printf(" = <%p> ", expr);
511 	result(llen, ret ? FAIL : OK);
512 	return ret;
513 }
514 
515 
516 #define EXPECT_PTRLT(cond, expr, cmp)				\
517 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
518 
519 static __attribute__((unused))
expect_ptrlt(const void * expr,int llen,const void * cmp)520 int expect_ptrlt(const void *expr, int llen, const void *cmp)
521 {
522 	int ret = !(expr < cmp);
523 
524 	llen += printf(" = <%p> ", expr);
525 	result(llen, ret ? FAIL : OK);
526 	return ret;
527 }
528 
529 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2)		\
530 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
531 
532 #define EXPECT_PTRER(cond, expr, expret, experr)			\
533 	EXPECT_PTRER2(cond, expr, expret, experr, 0)
534 
535 static __attribute__((unused))
expect_ptrerr2(const void * expr,const void * expret,int experr1,int experr2,int llen)536 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
537 {
538 	int ret = 0;
539 	int _errno = errno;
540 
541 	llen += printf(" = <%p> %s ", expr, errorname(_errno));
542 	if (expr != expret || (_errno != experr1 && _errno != experr2)) {
543 		ret = 1;
544 		if (experr2 == 0)
545 			llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
546 		else
547 			llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
548 		result(llen, FAIL);
549 	} else {
550 		result(llen, OK);
551 	}
552 	return ret;
553 }
554 
555 #define EXPECT_STRZR(cond, expr)				\
556 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
557 
558 static __attribute__((unused))
expect_strzr(const char * expr,int llen)559 int expect_strzr(const char *expr, int llen)
560 {
561 	int ret = 0;
562 
563 	llen += printf(" = <%s> ", expr ? expr : "(null)");
564 	if (expr) {
565 		ret = 1;
566 		result(llen, FAIL);
567 	} else {
568 		result(llen, OK);
569 	}
570 	return ret;
571 }
572 
573 
574 #define EXPECT_STRNZ(cond, expr)				\
575 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
576 
577 static __attribute__((unused))
expect_strnz(const char * expr,int llen)578 int expect_strnz(const char *expr, int llen)
579 {
580 	int ret = 0;
581 
582 	llen += printf(" = <%s> ", expr ? expr : "(null)");
583 	if (!expr) {
584 		ret = 1;
585 		result(llen, FAIL);
586 	} else {
587 		result(llen, OK);
588 	}
589 	return ret;
590 }
591 
592 
593 #define EXPECT_STREQ(cond, expr, cmp)				\
594 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
595 
596 static __attribute__((unused))
expect_streq(const char * expr,int llen,const char * cmp)597 int expect_streq(const char *expr, int llen, const char *cmp)
598 {
599 	int ret = 0;
600 
601 	llen += printf(" = <%s> ", expr);
602 	if (strcmp(expr, cmp) != 0) {
603 		ret = 1;
604 		result(llen, FAIL);
605 	} else {
606 		result(llen, OK);
607 	}
608 	return ret;
609 }
610 
611 
612 #define EXPECT_STRNE(cond, expr, cmp)				\
613 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
614 
615 static __attribute__((unused))
expect_strne(const char * expr,int llen,const char * cmp)616 int expect_strne(const char *expr, int llen, const char *cmp)
617 {
618 	int ret = 0;
619 
620 	llen += printf(" = <%s> ", expr);
621 	if (strcmp(expr, cmp) == 0) {
622 		ret = 1;
623 		result(llen, FAIL);
624 	} else {
625 		result(llen, OK);
626 	}
627 	return ret;
628 }
629 
630 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp)				\
631 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)
632 
633 static __attribute__((unused))
expect_str_buf_eq(size_t expr,const char * buf,size_t val,int llen,const char * cmp)634 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)
635 {
636 	llen += printf(" = %lu <%s> ", (unsigned long)expr, buf);
637 	if (strcmp(buf, cmp) != 0) {
638 		result(llen, FAIL);
639 		return 1;
640 	}
641 	if (expr != val) {
642 		result(llen, FAIL);
643 		return 1;
644 	}
645 
646 	result(llen, OK);
647 	return 0;
648 }
649 
650 #define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno)				\
651 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0)
652 
653 static __attribute__((unused))
expect_strtox(int llen,void * func,const char * input,int base,intmax_t expected,int expected_chars,int expected_errno)654 int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno)
655 {
656 	char *endptr;
657 	int actual_errno, actual_chars;
658 	intmax_t r;
659 
660 	errno = 0;
661 	if (func == strtol) {
662 		r = strtol(input, &endptr, base);
663 	} else if (func == strtoul) {
664 		r = strtoul(input, &endptr, base);
665 	} else {
666 		result(llen, FAIL);
667 		return 1;
668 	}
669 	actual_errno = errno;
670 	actual_chars = endptr - input;
671 
672 	llen += printf(" %lld = %lld", (long long)expected, (long long)r);
673 	if (r != expected) {
674 		result(llen, FAIL);
675 		return 1;
676 	}
677 	if (expected_chars == -1) {
678 		if (*endptr != '\0') {
679 			result(llen, FAIL);
680 			return 1;
681 		}
682 	} else if (expected_chars != actual_chars) {
683 		result(llen, FAIL);
684 		return 1;
685 	}
686 	if (actual_errno != expected_errno) {
687 		result(llen, FAIL);
688 		return 1;
689 	}
690 
691 	result(llen, OK);
692 	return 0;
693 }
694 
695 /* declare tests based on line numbers. There must be exactly one test per line. */
696 #define CASE_TEST(name) \
697 	case __LINE__: llen += printf("%d %s", test, #name);
698 
699 __attribute__((constructor))
constructor1(void)700 static void constructor1(void)
701 {
702 	constructor_test_value |= 1 << 0;
703 }
704 
705 __attribute__((constructor))
constructor2(int argc,char ** argv,char ** envp)706 static void constructor2(int argc, char **argv, char **envp)
707 {
708 	if (argc && argv && envp)
709 		constructor_test_value |= 1 << 1;
710 }
711 
test_program_invocation_name(void)712 int test_program_invocation_name(void)
713 {
714 	char buf[100];
715 	char *dirsep;
716 	ssize_t r;
717 	int fd;
718 
719 	fd = open("/proc/self/cmdline", O_RDONLY);
720 	if (fd == -1)
721 		return 1;
722 
723 	r = read(fd, buf, sizeof(buf));
724 	close(fd);
725 	if (r < 1 || r == sizeof(buf))
726 		return 1;
727 
728 	buf[r - 1] = '\0';
729 
730 	if (strcmp(program_invocation_name, buf) != 0)
731 		return 1;
732 
733 	dirsep = strrchr(buf, '/');
734 	if (!dirsep || dirsep[1] == '\0')
735 		return 1;
736 
737 	if (strcmp(program_invocation_short_name, dirsep + 1) != 0)
738 		return 1;
739 
740 	return 0;
741 }
742 
run_startup(int min,int max)743 int run_startup(int min, int max)
744 {
745 	int test;
746 	int ret = 0;
747 	/* kernel at least passes HOME and TERM, shell passes more */
748 	int env_total = 2;
749 	/* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
750 	extern char end;
751 	char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
752 	/* differ from nolibc, both glibc and musl have no global _auxv */
753 	const unsigned long *test_auxv = (void *)-1;
754 #ifdef NOLIBC
755 	test_auxv = _auxv;
756 #endif
757 	bool proc = access("/proc", R_OK) == 0;
758 
759 	for (test = min; test >= 0 && test <= max; test++) {
760 		int llen = 0; /* line length */
761 
762 		/* avoid leaving empty lines below, this will insert holes into
763 		 * test numbers.
764 		 */
765 		switch (test + __LINE__ + 1) {
766 		CASE_TEST(argc);             EXPECT_GE(1, test_argc, 1); break;
767 		CASE_TEST(argv_addr);        EXPECT_PTRGT(1, test_argv, brk); break;
768 		CASE_TEST(argv_environ);     EXPECT_PTRLT(1, test_argv, environ); break;
769 		CASE_TEST(argv_total);       EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
770 		CASE_TEST(argv0_addr);       EXPECT_PTRGT(1, argv0, brk); break;
771 		CASE_TEST(argv0_str);        EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
772 		CASE_TEST(argv0_len);        EXPECT_GE(1,  argv0 > brk ? strlen(argv0) : 0, 1); break;
773 		CASE_TEST(environ_addr);     EXPECT_PTRGT(1, environ, brk); break;
774 		CASE_TEST(environ_envp);     EXPECT_PTREQ(1, environ, test_envp); break;
775 		CASE_TEST(environ_auxv);     EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
776 		CASE_TEST(environ_total);    EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
777 		CASE_TEST(environ_HOME);     EXPECT_PTRNZ(1, getenv("HOME")); break;
778 		CASE_TEST(auxv_addr);        EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
779 		CASE_TEST(auxv_AT_UID);      EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
780 		CASE_TEST(constructor);      EXPECT_EQ(is_nolibc, constructor_test_value, 0x3); break;
781 		CASE_TEST(linkage_errno);    EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
782 		CASE_TEST(linkage_constr);   EXPECT_EQ(1, linkage_test_constructor_test_value, 0x3); break;
783 		CASE_TEST(prog_name);        EXPECT_ZR(proc, test_program_invocation_name()); break;
784 		case __LINE__:
785 			return ret; /* must be last */
786 		/* note: do not set any defaults so as to permit holes above */
787 		}
788 	}
789 	return ret;
790 }
791 
792 
793 /* used by some syscall tests below */
test_getdents64(const char * dir)794 int test_getdents64(const char *dir)
795 {
796 	char buffer[4096];
797 	int fd, ret;
798 	int err;
799 
800 	ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
801 	if (ret < 0)
802 		return ret;
803 
804 	ret = getdents64(fd, (void *)buffer, sizeof(buffer));
805 	err = errno;
806 	close(fd);
807 
808 	errno = err;
809 	return ret;
810 }
811 
test_dirent(void)812 static int test_dirent(void)
813 {
814 	int comm = 0, cmdline = 0;
815 	struct dirent dirent, *result;
816 	DIR *dir;
817 	int ret;
818 
819 	dir = opendir("/proc/self");
820 	if (!dir)
821 		return 1;
822 
823 	while (1) {
824 		errno = 0;
825 		ret = readdir_r(dir, &dirent, &result);
826 		if (ret != 0)
827 			return 1;
828 		if (!result)
829 			break;
830 
831 		if (strcmp(dirent.d_name, "comm") == 0)
832 			comm++;
833 		else if (strcmp(dirent.d_name, "cmdline") == 0)
834 			cmdline++;
835 	}
836 
837 	if (errno)
838 		return 1;
839 
840 	ret = closedir(dir);
841 	if (ret)
842 		return 1;
843 
844 	if (comm != 1 || cmdline != 1)
845 		return 1;
846 
847 	return 0;
848 }
849 
test_getrandom(void)850 int test_getrandom(void)
851 {
852 	uint64_t rng = 0;
853 	ssize_t ret;
854 
855 	ret = getrandom(&rng, sizeof(rng), GRND_NONBLOCK);
856 	if (ret == -1 && errno == EAGAIN)
857 		return 0; /* No entropy available yet */
858 
859 	if (ret != sizeof(rng))
860 		return ret;
861 
862 	if (!rng) {
863 		errno = EINVAL;
864 		return -1;
865 	}
866 
867 	return 0;
868 }
869 
test_getpagesize(void)870 int test_getpagesize(void)
871 {
872 	int x = getpagesize();
873 	int c;
874 
875 	if (x < 0)
876 		return x;
877 
878 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
879 	/*
880 	 * x86 family is always 4K page.
881 	 */
882 	c = (x == 4096);
883 #elif defined(__aarch64__)
884 	/*
885 	 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
886 	 * which are selected at kernel compilation time.
887 	 */
888 	c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
889 #else
890 	/*
891 	 * Assuming other architectures must have at least 4K page.
892 	 */
893 	c = (x >= 4096);
894 #endif
895 
896 	return !c;
897 }
898 
test_file_stream(void)899 int test_file_stream(void)
900 {
901 	FILE *f;
902 	int r;
903 
904 	f = fopen("/dev/null", "r");
905 	if (!f)
906 		return -1;
907 
908 	errno = 0;
909 	r = fwrite("foo", 1, 3, f);
910 	if (r != 0 || ((is_nolibc || is_glibc) && errno != EBADF)) {
911 		fclose(f);
912 		return -1;
913 	}
914 
915 	r = fclose(f);
916 	if (r == EOF)
917 		return -1;
918 
919 	return 0;
920 }
921 
test_file_stream_wsr(void)922 int test_file_stream_wsr(void)
923 {
924 	const char dataout[] = "foo";
925 	const size_t datasz = sizeof(dataout);
926 	char datain[datasz];
927 	int fd, r;
928 	FILE *f;
929 
930 	fd = open("/tmp", O_TMPFILE | O_RDWR, 0644);
931 	if (fd == -1)
932 		return -1;
933 
934 	f = fdopen(fd, "w+");
935 	if (!f)
936 		return -1;
937 
938 	errno = 0;
939 	r = fwrite(dataout, 1, datasz, f);
940 	if (r != datasz)
941 		return -1;
942 
943 	/* Attempt to read from the file without rewinding,
944 	 * we should read 0 items.
945 	 */
946 	r = fread(datain, 1, datasz, f);
947 	if (r)
948 		return -1;
949 
950 	/* Rewind the file to the start */
951 	r = fseek(f, 0, SEEK_SET);
952 	if (r)
953 		return -1;
954 
955 	/* Attempt to read back more than was written to
956 	 * make sure we handle short reads properly.
957 	 * fread() should return the number of complete items.
958 	 */
959 	r = fread(datain, 1, datasz + 1, f);
960 	if (r != datasz)
961 		return -1;
962 
963 	/* Data we read should match the data we just wrote */
964 	if (memcmp(datain, dataout, datasz) != 0)
965 		return -1;
966 
967 	r = fclose(f);
968 	if (r)
969 		return -1;
970 
971 	return 0;
972 }
973 
974 enum fork_type {
975 	FORK_STANDARD,
976 	FORK_VFORK,
977 };
978 
test_fork(enum fork_type type)979 int test_fork(enum fork_type type)
980 {
981 	int status;
982 	pid_t pid;
983 
984 	/* flush the printf buffer to avoid child flush it */
985 	fflush(stdout);
986 	fflush(stderr);
987 
988 	switch (type) {
989 	case FORK_STANDARD:
990 		pid = fork();
991 		break;
992 	case FORK_VFORK:
993 		pid = vfork();
994 		break;
995 	default:
996 		return 1;
997 	}
998 
999 	switch (pid) {
1000 	case -1:
1001 		return 1;
1002 
1003 	case 0:
1004 		_exit(123);
1005 
1006 	default:
1007 		pid = waitpid(pid, &status, 0);
1008 
1009 		return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
1010 	}
1011 }
1012 
test_stat_timestamps(void)1013 int test_stat_timestamps(void)
1014 {
1015 	struct stat st;
1016 
1017 	if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
1018 		return 1;
1019 
1020 	if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
1021 		return 1;
1022 
1023 	if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
1024 		return 1;
1025 
1026 	if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
1027 		return 1;
1028 
1029 	if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
1030 		return 1;
1031 
1032 	return 0;
1033 }
1034 
test_timer(void)1035 int test_timer(void)
1036 {
1037 	struct itimerspec timerspec;
1038 	struct sigevent evp;
1039 	timer_t timer;
1040 	int ret;
1041 
1042 	evp.sigev_notify = SIGEV_NONE;
1043 
1044 	ret = timer_create(CLOCK_MONOTONIC, &evp, &timer);
1045 	if (ret)
1046 		return ret;
1047 
1048 	timerspec = (struct itimerspec) {
1049 		.it_value.tv_sec = 1000000,
1050 	};
1051 	ret = timer_settime(timer, 0, &timerspec, NULL);
1052 	if (ret)
1053 		goto err;
1054 
1055 	timerspec = (struct itimerspec) {
1056 		.it_value.tv_sec = -1,
1057 		.it_value.tv_nsec = -1,
1058 		.it_interval.tv_sec = -1,
1059 		.it_interval.tv_nsec = -1,
1060 	};
1061 	ret = timer_gettime(timer, &timerspec);
1062 	if (ret)
1063 		goto err;
1064 
1065 	errno = EINVAL;
1066 	ret = -1;
1067 
1068 	if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
1069 		goto err;
1070 
1071 	if (timerspec.it_value.tv_sec > 1000000)
1072 		goto err;
1073 
1074 	ret = timer_delete(timer);
1075 	if (ret)
1076 		return ret;
1077 
1078 	return 0;
1079 
1080 err:
1081 	timer_delete(timer);
1082 	return ret;
1083 }
1084 
test_timerfd(void)1085 int test_timerfd(void)
1086 {
1087 	struct itimerspec timerspec;
1088 	int timer, ret;
1089 
1090 	timer = timerfd_create(CLOCK_MONOTONIC, 0);
1091 	if (timer == -1)
1092 		return -1;
1093 
1094 	timerspec = (struct itimerspec) {
1095 		.it_value.tv_sec = 1000000,
1096 	};
1097 	ret = timerfd_settime(timer, 0, &timerspec, NULL);
1098 	if (ret)
1099 		goto err;
1100 
1101 	timerspec = (struct itimerspec) {
1102 		.it_value.tv_sec = -1,
1103 		.it_value.tv_nsec = -1,
1104 		.it_interval.tv_sec = -1,
1105 		.it_interval.tv_nsec = -1,
1106 	};
1107 	ret = timerfd_gettime(timer, &timerspec);
1108 	if (ret)
1109 		goto err;
1110 
1111 	errno = EINVAL;
1112 	ret = -1;
1113 
1114 	if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
1115 		goto err;
1116 
1117 	if (timerspec.it_value.tv_sec > 1000000)
1118 		goto err;
1119 
1120 	ret = close(timer);
1121 	if (ret)
1122 		return ret;
1123 
1124 	return 0;
1125 
1126 err:
1127 	close(timer);
1128 	return ret;
1129 }
1130 
test_uname(void)1131 int test_uname(void)
1132 {
1133 	struct utsname buf;
1134 	char osrelease[sizeof(buf.release)];
1135 	ssize_t r;
1136 	int fd;
1137 
1138 	memset(&buf.domainname, 'P', sizeof(buf.domainname));
1139 
1140 	if (uname(&buf))
1141 		return 1;
1142 
1143 	if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
1144 		return 1;
1145 
1146 	fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
1147 	if (fd == -1)
1148 		return 1;
1149 
1150 	r = read(fd, osrelease, sizeof(osrelease));
1151 	if (r == -1)
1152 		return 1;
1153 
1154 	close(fd);
1155 
1156 	if (osrelease[r - 1] == '\n')
1157 		r--;
1158 
1159 	/* Validate one of the later fields to ensure field sizes are correct */
1160 	if (strncmp(osrelease, buf.release, r))
1161 		return 1;
1162 
1163 	/* Ensure the field domainname is set, it is missing from struct old_utsname */
1164 	if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
1165 		return 1;
1166 
1167 	return 0;
1168 }
1169 
test_mmap_munmap(void)1170 int test_mmap_munmap(void)
1171 {
1172 	int ret, fd, i, page_size;
1173 	void *mem;
1174 	size_t file_size, length, mem_length;
1175 	off_t offset, pa_offset;
1176 	struct stat stat_buf;
1177 	const char * const files[] = {
1178 		"/dev/zero",
1179 		"/proc/1/exe", "/proc/self/exe",
1180 		argv0,
1181 		NULL
1182 	};
1183 
1184 	page_size = getpagesize();
1185 	if (page_size < 0)
1186 		return 1;
1187 
1188 	/* find a right file to mmap, existed and accessible */
1189 	for (i = 0; files[i] != NULL; i++) {
1190 		ret = fd = open(files[i], O_RDONLY);
1191 		if (ret == -1)
1192 			continue;
1193 		else
1194 			break;
1195 	}
1196 	if (ret == -1)
1197 		return 1;
1198 
1199 	ret = stat(files[i], &stat_buf);
1200 	if (ret == -1)
1201 		goto end;
1202 
1203 	/* file size of the special /dev/zero is 0, let's assign one manually */
1204 	if (i == 0)
1205 		file_size = 3*page_size;
1206 	else
1207 		file_size = stat_buf.st_size;
1208 
1209 	offset = file_size - 1;
1210 	if (offset < 0)
1211 		offset = 0;
1212 	length = file_size - offset;
1213 	pa_offset = offset & ~(page_size - 1);
1214 	mem_length = length + offset - pa_offset;
1215 
1216 	mem = mmap(NULL, mem_length, PROT_READ, MAP_SHARED, fd, pa_offset);
1217 	if (mem == MAP_FAILED) {
1218 		ret = 1;
1219 		goto end;
1220 	}
1221 
1222 	mem = mremap(mem, mem_length, mem_length * 2, MREMAP_MAYMOVE, 0);
1223 	if (mem == MAP_FAILED) {
1224 		munmap(mem, mem_length);
1225 		ret = 1;
1226 		goto end;
1227 	}
1228 
1229 	ret = munmap(mem, mem_length * 2);
1230 
1231 end:
1232 	close(fd);
1233 	return !!ret;
1234 }
1235 
test_pipe(void)1236 int test_pipe(void)
1237 {
1238 	const char *const msg = "hello, nolibc";
1239 	int pipefd[2];
1240 	char buf[32];
1241 	size_t len;
1242 
1243 	if (pipe(pipefd) == -1)
1244 		return 1;
1245 
1246 	write(pipefd[1], msg, strlen(msg));
1247 	close(pipefd[1]);
1248 	len = read(pipefd[0], buf, sizeof(buf));
1249 	close(pipefd[0]);
1250 
1251 	if (len != strlen(msg))
1252 		return 1;
1253 
1254 	return !!memcmp(buf, msg, len);
1255 }
1256 
test_rlimit(void)1257 int test_rlimit(void)
1258 {
1259 	struct rlimit rlim = {
1260 		.rlim_cur = 1 << 20,
1261 		.rlim_max = 1 << 21,
1262 	};
1263 	int ret;
1264 
1265 	ret = setrlimit(RLIMIT_CORE, &rlim);
1266 	if (ret)
1267 		return -1;
1268 
1269 	rlim.rlim_cur = 0;
1270 	rlim.rlim_max = 0;
1271 
1272 	ret = getrlimit(RLIMIT_CORE, &rlim);
1273 	if (ret)
1274 		return -1;
1275 
1276 	if (rlim.rlim_cur != 1 << 20)
1277 		return -1;
1278 	if (rlim.rlim_max != 1 << 21)
1279 		return -1;
1280 
1281 	return 0;
1282 }
1283 
test_openat(void)1284 int test_openat(void)
1285 {
1286 	int dev, null;
1287 
1288 	dev = openat(AT_FDCWD, "/dev", O_DIRECTORY);
1289 	if (dev < 0)
1290 		return -1;
1291 
1292 	null = openat(dev, "null", O_RDONLY);
1293 	close(dev);
1294 	if (null < 0)
1295 		return -1;
1296 
1297 	close(null);
1298 	return 0;
1299 }
1300 
test_namespace(void)1301 int test_namespace(void)
1302 {
1303 	int original_ns, new_ns, ret;
1304 	ino_t original_ns_ino;
1305 	struct stat stat_buf;
1306 
1307 	original_ns = open("/proc/self/ns/uts", O_RDONLY);
1308 	if (original_ns == -1)
1309 		return -1;
1310 
1311 	ret = fstat(original_ns, &stat_buf);
1312 	if (ret)
1313 		goto out;
1314 
1315 	original_ns_ino = stat_buf.st_ino;
1316 
1317 	ret = unshare(CLONE_NEWUTS);
1318 	if (ret)
1319 		goto out;
1320 
1321 	new_ns = open("/proc/self/ns/uts", O_RDONLY);
1322 	if (new_ns == -1) {
1323 		ret = new_ns;
1324 		goto out;
1325 	}
1326 
1327 	ret = fstat(new_ns, &stat_buf);
1328 	close(new_ns);
1329 	if (ret)
1330 		goto out;
1331 
1332 	if (stat_buf.st_ino == original_ns_ino) {
1333 		errno = EINVAL;
1334 		ret = -1;
1335 		goto out;
1336 	}
1337 
1338 	ret = setns(original_ns, CLONE_NEWUTS);
1339 	if (ret)
1340 		goto out;
1341 
1342 	new_ns = open("/proc/self/ns/uts", O_RDONLY);
1343 	if (new_ns == -1) {
1344 		ret = new_ns;
1345 		goto out;
1346 	}
1347 
1348 	ret = fstat(new_ns, &stat_buf);
1349 	if (ret)
1350 		goto out;
1351 
1352 	close(new_ns);
1353 
1354 	if (stat_buf.st_ino != original_ns_ino) {
1355 		errno = EINVAL;
1356 		ret = -1;
1357 		goto out;
1358 	}
1359 
1360 	ret = 0;
1361 
1362 out:
1363 	close(original_ns);
1364 	return ret;
1365 }
1366 
1367 /* Run syscall tests between IDs <min> and <max>.
1368  * Return 0 on success, non-zero on failure.
1369  */
run_syscall(int min,int max)1370 int run_syscall(int min, int max)
1371 {
1372 	struct timeval tv;
1373 	struct timezone tz;
1374 	struct timespec ts;
1375 	struct stat stat_buf;
1376 	int euid0;
1377 	int proc;
1378 	int test;
1379 	int tmp;
1380 	struct iovec iov_one = {
1381 		.iov_base = &tmp,
1382 		.iov_len = 1,
1383 	};
1384 	int ret = 0;
1385 	void *p1, *p2;
1386 	int has_gettid = 1;
1387 	int has_brk;
1388 
1389 	/* <proc> indicates whether or not /proc is mounted */
1390 	proc = stat("/proc", &stat_buf) == 0;
1391 
1392 	/* this will be used to skip certain tests that can't be run unprivileged */
1393 	euid0 = geteuid() == 0;
1394 
1395 	/* from 2.30, glibc provides gettid() */
1396 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
1397 	has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
1398 #endif
1399 
1400 	/* on musl setting brk()/sbrk() always fails */
1401 	has_brk = brk(0) == 0;
1402 
1403 	for (test = min; test >= 0 && test <= max; test++) {
1404 		int llen = 0; /* line length */
1405 
1406 		/* avoid leaving empty lines below, this will insert holes into
1407 		 * test numbers.
1408 		 */
1409 		switch (test + __LINE__ + 1) {
1410 		CASE_TEST(access);            EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break;
1411 		CASE_TEST(access_bad);        EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break;
1412 		CASE_TEST(clock_getres);      EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break;
1413 		CASE_TEST(clock_gettime);     EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break;
1414 		CASE_TEST(clock_settime);     EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break;
1415 		CASE_TEST(getpid);            EXPECT_SYSNE(1, getpid(), -1); break;
1416 		CASE_TEST(getppid);           EXPECT_SYSNE(1, getppid(), -1); break;
1417 		CASE_TEST(gettid);            EXPECT_SYSNE(has_gettid, gettid(), -1); break;
1418 		CASE_TEST(getpgid_self);      EXPECT_SYSNE(1, getpgid(0), -1); break;
1419 		CASE_TEST(getpgid_bad);       EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
1420 		CASE_TEST(kill_0);            EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1421 		CASE_TEST(kill_CONT);         EXPECT_SYSZR(1, kill(getpid(), 0)); break;
1422 		CASE_TEST(kill_BADPID);       EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
1423 		CASE_TEST(sbrk_0);            EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
1424 		CASE_TEST(sbrk);              if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
1425 		CASE_TEST(brk);               EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
1426 		CASE_TEST(chdir_root);        EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
1427 		CASE_TEST(chdir_dot);         EXPECT_SYSZR(1, chdir(".")); break;
1428 		CASE_TEST(chdir_blah);        EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
1429 		CASE_TEST(chmod_argv0);       EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
1430 		CASE_TEST(chmod_self);        EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
1431 		CASE_TEST(chown_self);        EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
1432 		CASE_TEST(chroot_root);       EXPECT_SYSZR(euid0, chroot("/")); break;
1433 		CASE_TEST(chroot_blah);       EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
1434 		CASE_TEST(chroot_exe);        EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
1435 		CASE_TEST(clock_nanosleep);   ts.tv_nsec = -1; EXPECT_EQ(1, EINVAL, clock_nanosleep(CLOCK_REALTIME, 0, &ts, NULL)); break;
1436 		CASE_TEST(close_m1);          EXPECT_SYSER(1, close(-1), -1, EBADF); break;
1437 		CASE_TEST(close_dup);         EXPECT_SYSZR(1, close(dup(0))); break;
1438 		CASE_TEST(dup_0);             tmp = dup(0);  EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1439 		CASE_TEST(dup_m1);            tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1440 		CASE_TEST(dup2_0);            tmp = dup2(0, 100);  EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1441 		CASE_TEST(dup2_m1);           tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1442 		CASE_TEST(dup3_0);            tmp = dup3(0, 100, 0);  EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
1443 		CASE_TEST(dup3_m1);           tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
1444 		CASE_TEST(execve_root);       EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
1445 		CASE_TEST(fchdir_stdin);      EXPECT_SYSER(1, fchdir(STDIN_FILENO), -1, ENOTDIR); break;
1446 		CASE_TEST(fchdir_badfd);      EXPECT_SYSER(1, fchdir(-1), -1, EBADF); break;
1447 		CASE_TEST(file_stream);       EXPECT_SYSZR(1, test_file_stream()); break;
1448 		CASE_TEST(file_stream_wsr);   EXPECT_SYSZR(1, test_file_stream_wsr()); break;
1449 		CASE_TEST(fork);              EXPECT_SYSZR(1, test_fork(FORK_STANDARD)); break;
1450 		CASE_TEST(getdents64_root);   EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
1451 		CASE_TEST(getdents64_null);   EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1452 		CASE_TEST(directories);       EXPECT_SYSZR(is_nolibc && proc, test_dirent()); break;
1453 		CASE_TEST(getrandom);         EXPECT_SYSZR(1, test_getrandom()); break;
1454 		CASE_TEST(gettimeofday_tv);   EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
1455 		CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
1456 		CASE_TEST(getpagesize);       EXPECT_SYSZR(1, test_getpagesize()); break;
1457 		CASE_TEST(ioctl_tiocinq);     EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1458 		CASE_TEST(link_root1);        EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1459 		CASE_TEST(link_blah);         EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1460 		CASE_TEST(link_dir);          EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1461 		CASE_TEST(link_cross);        EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1462 		CASE_TEST(lseek_m1);          EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1463 		CASE_TEST(lseek_0);           EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1464 		CASE_TEST(mkdir_root);        EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1465 		CASE_TEST(mmap_bad);          EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1466 		CASE_TEST(munmap_bad);        EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1467 		CASE_TEST(mmap_munmap_good);  EXPECT_SYSZR(1, test_mmap_munmap()); break;
1468 		CASE_TEST(nanosleep);         ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break;
1469 		CASE_TEST(open_tty);          EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break;
1470 		CASE_TEST(open_blah);         EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break;
1471 		CASE_TEST(openat_dir);        EXPECT_SYSZR(1, test_openat()); break;
1472 		CASE_TEST(pipe);              EXPECT_SYSZR(1, test_pipe()); break;
1473 		CASE_TEST(poll_null);         EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1474 		CASE_TEST(poll_stdout);       EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1475 		CASE_TEST(poll_fault);        EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1476 		CASE_TEST(prctl);             EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1477 		CASE_TEST(read_badf);         EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1478 		CASE_TEST(rlimit);            EXPECT_SYSZR(1, test_rlimit()); break;
1479 		CASE_TEST(rmdir_blah);        EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1480 		CASE_TEST(sched_yield);       EXPECT_SYSZR(1, sched_yield()); break;
1481 		CASE_TEST(select_null);       EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1482 		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;
1483 		CASE_TEST(select_fault);      EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1484 		CASE_TEST(stat_blah);         EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1485 		CASE_TEST(stat_fault);        EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1486 		CASE_TEST(stat_rdev);         EXPECT_SYSZR(1, ({ int ret = stat("/dev/null", &stat_buf); ret ?: stat_buf.st_rdev != makedev(1, 3); })); break;
1487 		CASE_TEST(stat_timestamps);   EXPECT_SYSZR(1, test_stat_timestamps()); break;
1488 		CASE_TEST(symlink_root);      EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1489 		CASE_TEST(timer);             EXPECT_SYSZR(1, test_timer()); break;
1490 		CASE_TEST(timerfd);           EXPECT_SYSZR(1, test_timerfd()); break;
1491 		CASE_TEST(uname);             EXPECT_SYSZR(proc, test_uname()); break;
1492 		CASE_TEST(uname_fault);       EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1493 		CASE_TEST(unlink_root);       EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1494 		CASE_TEST(unlink_blah);       EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1495 		CASE_TEST(vfork);             EXPECT_SYSZR(1, test_fork(FORK_VFORK)); break;
1496 		CASE_TEST(wait_child);        EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1497 		CASE_TEST(waitpid_min);       EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1498 		CASE_TEST(waitpid_child);     EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1499 		CASE_TEST(write_badf);        EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1500 		CASE_TEST(write_zero);        EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1501 		CASE_TEST(readv_badf);        EXPECT_SYSER(1, readv(-1, &iov_one, 1), -1, EBADF); break;
1502 		CASE_TEST(readv_zero);        EXPECT_SYSZR(1, readv(0, NULL, 0)); break;
1503 		CASE_TEST(writev_badf);       EXPECT_SYSER(1, writev(-1, &iov_one, 1), -1, EBADF); break;
1504 		CASE_TEST(writev_zero);       EXPECT_SYSZR(1, writev(1, NULL, 0)); break;
1505 		CASE_TEST(ptrace);            tmp = ptrace(PTRACE_CONT, getpid(), NULL, NULL); EXPECT_SYSER(tmp != -1 && errno != ENOSYS, tmp, -1, EFAULT); break;
1506 		CASE_TEST(syscall_noargs);    EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1507 		CASE_TEST(syscall_args);      EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1508 		CASE_TEST(_syscall_noargs);   EXPECT_SYSEQ(is_nolibc, _syscall(__NR_getpid), getpid()); break;
1509 		CASE_TEST(_syscall_args);     EXPECT_SYSEQ(is_nolibc, _syscall(__NR_statx, 0, NULL, 0, 0, NULL), -EFAULT); break;
1510 		CASE_TEST(namespace);         EXPECT_SYSZR(euid0 && proc, test_namespace()); break;
1511 		case __LINE__:
1512 			return ret; /* must be last */
1513 		/* note: do not set any defaults so as to permit holes above */
1514 		}
1515 	}
1516 	return ret;
1517 }
1518 
test_difftime(void)1519 int test_difftime(void)
1520 {
1521 	if (difftime(200., 100.) != 100.)
1522 		return 1;
1523 
1524 	if (difftime(100., 200.) != -100.)
1525 		return 1;
1526 
1527 	return 0;
1528 }
1529 
test_time_types(void)1530 int test_time_types(void)
1531 {
1532 #ifdef NOLIBC
1533 	struct __kernel_timespec kts;
1534 	struct timespec ts;
1535 
1536 	if (!__builtin_types_compatible_p(time_t, __kernel_time64_t))
1537 		return 1;
1538 
1539 	if (sizeof(ts) != sizeof(kts))
1540 		return 1;
1541 
1542 	if (!__builtin_types_compatible_p(__typeof__(ts.tv_sec), __typeof__(kts.tv_sec)))
1543 		return 1;
1544 
1545 	if (!__builtin_types_compatible_p(__typeof__(ts.tv_nsec), __typeof__(kts.tv_nsec)))
1546 		return 1;
1547 
1548 	if (offsetof(__typeof__(ts), tv_sec) != offsetof(__typeof__(kts), tv_sec))
1549 		return 1;
1550 
1551 	if (offsetof(__typeof__(ts), tv_nsec) != offsetof(__typeof__(kts), tv_nsec))
1552 		return 1;
1553 #endif /* NOLIBC */
1554 
1555 	return 0;
1556 }
1557 
test_malloc(void)1558 int test_malloc(void)
1559 {
1560 	size_t sz_array1, sz_array2, sz_array3;
1561 	int *array1, *array2, *array3;
1562 	int pagesize = getpagesize();
1563 	size_t idx;
1564 
1565 	if (pagesize < 0)
1566 		return 1;
1567 
1568 	/* Dependent on the page size, as that is the granularity of our allocator. */
1569 	sz_array1 = pagesize / 2;
1570 	array1 = malloc(sz_array1 * sizeof(*array1));
1571 	if (!array1)
1572 		return 2;
1573 
1574 	for (idx = 0; idx < sz_array1; idx++)
1575 		array1[idx] = idx;
1576 
1577 	sz_array2 = pagesize * 2;
1578 	array2 = calloc(sz_array2, sizeof(*array2));
1579 	if (!array2) {
1580 		free(array1);
1581 		return 3;
1582 	}
1583 
1584 	for (idx = 0; idx < sz_array2; idx++) {
1585 		if (array2[idx] != 0) {
1586 			free(array2);
1587 			return 4;
1588 		}
1589 		array2[idx] = idx + sz_array1;
1590 	}
1591 
1592 	/* Resize array1 into array3 and append array2 at the end. */
1593 	sz_array3 = sz_array1 + sz_array2;
1594 	array3 = realloc(array1, sz_array3 * sizeof(*array3));
1595 	if (!array3) {
1596 		free(array2);
1597 		free(array1);
1598 		return 5;
1599 	}
1600 	memcpy(array3 + sz_array1, array2, sizeof(*array2) * sz_array2);
1601 	free(array2);
1602 
1603 	/* The contents must be contiguous now. */
1604 	for (idx = 0; idx < sz_array3; idx++)
1605 		if (array3[idx] != (int)idx)
1606 			return 6;
1607 
1608 	free(array3);
1609 	return 0;
1610 }
1611 
run_stdlib(int min,int max)1612 int run_stdlib(int min, int max)
1613 {
1614 	int test;
1615 	int ret = 0;
1616 
1617 	for (test = min; test >= 0 && test <= max; test++) {
1618 		int llen = 0; /* line length */
1619 
1620 		/* For functions that take a long buffer, like strlcat()
1621 		 * Add some more chars after the \0, to test functions that overwrite the buffer set
1622 		 * the \0 at the exact right position.
1623 		 */
1624 		char buf[11] = "test123456";
1625 		buf[4] = '\0';
1626 
1627 
1628 		/* avoid leaving empty lines below, this will insert holes into
1629 		 * test numbers.
1630 		 */
1631 		switch (test + __LINE__ + 1) {
1632 		CASE_TEST(getenv_TERM);        EXPECT_STRNZ(1, getenv("TERM")); break;
1633 		CASE_TEST(getenv_blah);        EXPECT_STRZR(1, getenv("blah")); break;
1634 		CASE_TEST(setcmp_blah_blah);   EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1635 		CASE_TEST(setcmp_blah_blah2);  EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1636 		CASE_TEST(setncmp_blah_blah);  EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1637 		CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1638 		CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1639 		CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1640 		CASE_TEST(strchr_foobar_o);    EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1641 		CASE_TEST(strchr_foobar_z);    EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1642 		CASE_TEST(strrchr_foobar_o);   EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1643 		CASE_TEST(strrchr_foobar_z);   EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1644 		CASE_TEST(strlcat_0);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1645 		CASE_TEST(strlcat_1);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1646 		CASE_TEST(strlcat_5);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1647 		CASE_TEST(strlcat_6);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1648 		CASE_TEST(strlcat_7);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1649 		CASE_TEST(strlcat_8);          EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1650 		CASE_TEST(strlcpy_0);          EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1651 		CASE_TEST(strlcpy_1);          EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1652 		CASE_TEST(strlcpy_2);          EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1653 		CASE_TEST(strlcpy_3);          EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1654 		CASE_TEST(strlcpy_4);          EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1655 		CASE_TEST(strstr_foobar_foo);  EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break;
1656 		CASE_TEST(strstr_foobar_bar);  EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break;
1657 		CASE_TEST(strstr_foobar_baz);  EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break;
1658 		CASE_TEST(memcmp_20_20);       EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1659 		CASE_TEST(memcmp_20_60);       EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1660 		CASE_TEST(memcmp_60_20);       EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1661 		CASE_TEST(memcmp_20_e0);       EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1662 		CASE_TEST(memcmp_e0_20);       EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1663 		CASE_TEST(memcmp_80_e0);       EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1664 		CASE_TEST(memcmp_e0_80);       EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1665 		CASE_TEST(limit_int8_max);          EXPECT_EQ(1, INT8_MAX,         (int8_t)          0x7f); break;
1666 		CASE_TEST(limit_int8_min);          EXPECT_EQ(1, INT8_MIN,         (int8_t)          0x80); break;
1667 		CASE_TEST(limit_uint8_max);         EXPECT_EQ(1, UINT8_MAX,        (uint8_t)         0xff); break;
1668 		CASE_TEST(limit_int16_max);         EXPECT_EQ(1, INT16_MAX,        (int16_t)         0x7fff); break;
1669 		CASE_TEST(limit_int16_min);         EXPECT_EQ(1, INT16_MIN,        (int16_t)         0x8000); break;
1670 		CASE_TEST(limit_uint16_max);        EXPECT_EQ(1, UINT16_MAX,       (uint16_t)        0xffff); break;
1671 		CASE_TEST(limit_int32_max);         EXPECT_EQ(1, INT32_MAX,        (int32_t)         0x7fffffff); break;
1672 		CASE_TEST(limit_int32_min);         EXPECT_EQ(1, INT32_MIN,        (int32_t)         0x80000000); break;
1673 		CASE_TEST(limit_uint32_max);        EXPECT_EQ(1, UINT32_MAX,       (uint32_t)        0xffffffff); break;
1674 		CASE_TEST(limit_int64_max);         EXPECT_EQ(1, INT64_MAX,        (int64_t)         0x7fffffffffffffff); break;
1675 		CASE_TEST(limit_int64_min);         EXPECT_EQ(1, INT64_MIN,        (int64_t)         0x8000000000000000); break;
1676 		CASE_TEST(limit_uint64_max);        EXPECT_EQ(1, UINT64_MAX,       (uint64_t)        0xffffffffffffffff); break;
1677 		CASE_TEST(limit_int_least8_max);    EXPECT_EQ(1, INT_LEAST8_MAX,   (int_least8_t)    0x7f); break;
1678 		CASE_TEST(limit_int_least8_min);    EXPECT_EQ(1, INT_LEAST8_MIN,   (int_least8_t)    0x80); break;
1679 		CASE_TEST(limit_uint_least8_max);   EXPECT_EQ(1, UINT_LEAST8_MAX,  (uint_least8_t)   0xff); break;
1680 		CASE_TEST(limit_int_least16_max);   EXPECT_EQ(1, INT_LEAST16_MAX,  (int_least16_t)   0x7fff); break;
1681 		CASE_TEST(limit_int_least16_min);   EXPECT_EQ(1, INT_LEAST16_MIN,  (int_least16_t)   0x8000); break;
1682 		CASE_TEST(limit_uint_least16_max);  EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t)  0xffff); break;
1683 		CASE_TEST(limit_int_least32_max);   EXPECT_EQ(1, INT_LEAST32_MAX,  (int_least32_t)   0x7fffffff); break;
1684 		CASE_TEST(limit_int_least32_min);   EXPECT_EQ(1, INT_LEAST32_MIN,  (int_least32_t)   0x80000000); break;
1685 		CASE_TEST(limit_uint_least32_max);  EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t)  0xffffffffU); break;
1686 		CASE_TEST(limit_int_least64_min);   EXPECT_EQ(1, INT_LEAST64_MIN,  (int_least64_t)   0x8000000000000000LL); break;
1687 		CASE_TEST(limit_int_least64_max);   EXPECT_EQ(1, INT_LEAST64_MAX,  (int_least64_t)   0x7fffffffffffffffLL); break;
1688 		CASE_TEST(limit_uint_least64_max);  EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t)  0xffffffffffffffffULL); break;
1689 		CASE_TEST(limit_int_fast8_max);     EXPECT_EQ(1, INT_FAST8_MAX,    (int_fast8_t)     0x7f); break;
1690 		CASE_TEST(limit_int_fast8_min);     EXPECT_EQ(1, INT_FAST8_MIN,    (int_fast8_t)     0x80); break;
1691 		CASE_TEST(limit_uint_fast8_max);    EXPECT_EQ(1, UINT_FAST8_MAX,   (uint_fast8_t)    0xff); break;
1692 		CASE_TEST(limit_int_fast16_min);    EXPECT_EQ(1, INT_FAST16_MIN,   (int_fast16_t)    SINT_MIN_OF_TYPE(int_fast16_t)); break;
1693 		CASE_TEST(limit_int_fast16_max);    EXPECT_EQ(1, INT_FAST16_MAX,   (int_fast16_t)    SINT_MAX_OF_TYPE(int_fast16_t)); break;
1694 		CASE_TEST(limit_uint_fast16_max);   EXPECT_EQ(1, UINT_FAST16_MAX,  (uint_fast16_t)   UINTPTR_MAX); break;
1695 		CASE_TEST(limit_int_fast32_min);    EXPECT_EQ(1, INT_FAST32_MIN,   (int_fast32_t)    SINT_MIN_OF_TYPE(int_fast32_t)); break;
1696 		CASE_TEST(limit_int_fast32_max);    EXPECT_EQ(1, INT_FAST32_MAX,   (int_fast32_t)    SINT_MAX_OF_TYPE(int_fast32_t)); break;
1697 		CASE_TEST(limit_uint_fast32_max);   EXPECT_EQ(1, UINT_FAST32_MAX,  (uint_fast32_t)   UINTPTR_MAX); break;
1698 		CASE_TEST(limit_int_fast64_min);    EXPECT_EQ(1, INT_FAST64_MIN,   (int_fast64_t)    INT64_MIN); break;
1699 		CASE_TEST(limit_int_fast64_max);    EXPECT_EQ(1, INT_FAST64_MAX,   (int_fast64_t)    INT64_MAX); break;
1700 		CASE_TEST(limit_uint_fast64_max);   EXPECT_EQ(1, UINT_FAST64_MAX,  (uint_fast64_t)   UINT64_MAX); break;
1701 		CASE_TEST(sizeof_long_sane);        EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1702 		CASE_TEST(limit_intptr_min);        EXPECT_EQ(1, INTPTR_MIN,  sizeof(long) == 8 ? (intptr_t)  0x8000000000000000LL  : (intptr_t)  0x80000000); break;
1703 		CASE_TEST(limit_intptr_max);        EXPECT_EQ(1, INTPTR_MAX,  sizeof(long) == 8 ? (intptr_t)  0x7fffffffffffffffLL  : (intptr_t)  0x7fffffff); break;
1704 		CASE_TEST(limit_uintptr_max);       EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1705 		CASE_TEST(limit_ptrdiff_min);       EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL  : (ptrdiff_t) 0x80000000); break;
1706 		CASE_TEST(limit_ptrdiff_max);       EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL  : (ptrdiff_t) 0x7fffffff); break;
1707 		CASE_TEST(limit_size_max);          EXPECT_EQ(1, SIZE_MAX,    sizeof(long) == 8 ? (size_t)    0xffffffffffffffffULL : (size_t)    0xffffffffU); break;
1708 		CASE_TEST(strtol_simple);           EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
1709 		CASE_TEST(strtol_positive);         EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
1710 		CASE_TEST(strtol_negative);         EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
1711 		CASE_TEST(strtol_hex_auto);         EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
1712 		CASE_TEST(strtol_base36);           EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
1713 		CASE_TEST(strtol_cutoff);           EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
1714 		CASE_TEST(strtol_octal_auto);       EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
1715 		CASE_TEST(strtol_hex_00);           EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
1716 		CASE_TEST(strtol_hex_FF);           EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
1717 		CASE_TEST(strtol_hex_ff);           EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
1718 		CASE_TEST(strtol_hex_prefix);       EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
1719 		CASE_TEST(strtol_trailer);          EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
1720 		CASE_TEST(strtol_overflow);         EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
1721 		CASE_TEST(strtol_underflow);        EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
1722 		CASE_TEST(strtoul_negative);        EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
1723 		CASE_TEST(strtoul_overflow);        EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
1724 		CASE_TEST(strerror_success);        EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
1725 		CASE_TEST(strerror_EINVAL);         EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
1726 		CASE_TEST(strerror_int_max);        EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
1727 		CASE_TEST(strerror_int_min);        EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
1728 		CASE_TEST(tolower);                 EXPECT_EQ(1, tolower('A'), 'a'); break;
1729 		CASE_TEST(tolower_noop);            EXPECT_EQ(1, tolower('a'), 'a'); break;
1730 		CASE_TEST(toupper);                 EXPECT_EQ(1, toupper('a'), 'A'); break;
1731 		CASE_TEST(toupper_noop);            EXPECT_EQ(1, toupper('A'), 'A'); break;
1732 		CASE_TEST(abs);                     EXPECT_EQ(1, abs(-10), 10); break;
1733 		CASE_TEST(abs_noop);                EXPECT_EQ(1, abs(10), 10); break;
1734 		CASE_TEST(difftime);                EXPECT_ZR(1, test_difftime()); break;
1735 		CASE_TEST(memchr_foobar6_o);        EXPECT_STREQ(1, memchr("foobar", 'o', 6), "oobar"); break;
1736 		CASE_TEST(memchr_foobar3_b);        EXPECT_STRZR(1, memchr("foobar", 'b', 3)); break;
1737 		CASE_TEST(time_types);              EXPECT_ZR(is_nolibc, test_time_types()); break;
1738 		CASE_TEST(makedev);                 EXPECT_EQ(1, makedev(0x12, 0x34), 0x1234); break;
1739 		CASE_TEST(major);                   EXPECT_EQ(1, major(0x1234), 0x12); break;
1740 		CASE_TEST(minor);                   EXPECT_EQ(1, minor(0x1234), 0x34); break;
1741 		CASE_TEST(makedev_big);             EXPECT_EQ(1, makedev(0x11223344, 0x55667788), 0x1122355667734488); break;
1742 		CASE_TEST(major_big);               EXPECT_EQ(1, major(0x1122355667734488), 0x11223344); break;
1743 		CASE_TEST(minor_big);               EXPECT_EQ(1, minor(0x1122355667734488), 0x55667788); break;
1744 		CASE_TEST(malloc);                  EXPECT_ZR(1, test_malloc()); break;
1745 		CASE_TEST(bswap_16);                EXPECT_EQ(1, bswap_16(0x0123), 0x2301); break;
1746 		CASE_TEST(bswap_32);                EXPECT_EQ(1, bswap_32(0x01234567), 0x67452301); break;
1747 		CASE_TEST(bswap_64);                EXPECT_EQ(1, bswap_64(0x0123456789abcdef), 0xefcdab8967452301); break;
1748 		CASE_TEST(htobe16);                 EXPECT_EQ(1, htobe16(is_le ? 0x0123 : 0x2301), 0x2301); break;
1749 		CASE_TEST(htole16);                 EXPECT_EQ(1, htole16(is_le ? 0x0123 : 0x2301), 0x0123); break;
1750 		CASE_TEST(htobe32);                 EXPECT_EQ(1, htobe32(is_le ? 0x01234567 : 0x67452301), 0x67452301); break;
1751 		CASE_TEST(htole32);                 EXPECT_EQ(1, htole32(is_le ? 0x01234567 : 0x67452301), 0x01234567); break;
1752 		CASE_TEST(htobe64);                 EXPECT_EQ(1, htobe64(is_le ? 0x0123456789000000 : 0x8967452301), 0x8967452301); break;
1753 		CASE_TEST(htole64);                 EXPECT_EQ(1, htole64(is_le ? 0x0123456789 : 0x8967452301000000), 0x0123456789); break;
1754 
1755 		case __LINE__:
1756 			return ret; /* must be last */
1757 		/* note: do not set any defaults so as to permit holes above */
1758 		}
1759 	}
1760 	return ret;
1761 }
1762 
1763 #define EXPECT_VFPRINTF(cond, expected, fmt, ...)				\
1764 	do { if (!(cond)) result(llen, SKIPPED); else ret += expect_vfprintf(llen, expected, fmt, ##__VA_ARGS__); } while (0)
1765 
1766 #define VFPRINTF_LEN 25
expect_vfprintf(int llen,const char * expected,const char * fmt,...)1767 static int expect_vfprintf(int llen, const char *expected, const char *fmt, ...)
1768 {
1769 	char buf[VFPRINTF_LEN + 80];
1770 	unsigned int cmp_len;
1771 	va_list args;
1772 	ssize_t written, expected_len;
1773 
1774 	/* Fill and terminate buf[] to check for overlong/absent writes */
1775 	memset(buf, 0xa5, sizeof(buf) - 1);
1776 	buf[sizeof(buf) - 1] = 0;
1777 
1778 	va_start(args, fmt);
1779 	/* Limit buffer length to test truncation */
1780 	written = vsnprintf(buf, VFPRINTF_LEN + 1, fmt, args);
1781 	va_end(args);
1782 
1783 	llen += printf(" \"%s\"", buf);
1784 
1785 	expected_len = strlen(expected);
1786 	if (expected_len > VFPRINTF_LEN) {
1787 		/* Indicate truncated in test output */
1788 		llen += printf("+");
1789 		cmp_len = VFPRINTF_LEN;
1790 	} else {
1791 		cmp_len = expected_len;
1792 	}
1793 
1794 	if (memcmp(expected, buf, cmp_len) || buf[cmp_len]) {
1795 		llen += printf(" should be \"%.*s\"", VFPRINTF_LEN, expected);
1796 		result(llen, FAIL);
1797 		return 1;
1798 	}
1799 
1800 	if (written != expected_len) {
1801 		llen += printf(" written(%d) != %d", (int)written, (int)expected_len);
1802 		result(llen, FAIL);
1803 		return 1;
1804 	}
1805 
1806 	/* Check for any overwrites after the actual data. */
1807 	while (++cmp_len < sizeof(buf) - 1) {
1808 		if ((unsigned char)buf[cmp_len] != 0xa5) {
1809 			llen += printf(" overwrote buf[%d] with 0x%x", cmp_len, buf[cmp_len]);
1810 			result(llen, FAIL);
1811 			return 1;
1812 		}
1813 	}
1814 
1815 	result(llen, OK);
1816 	return 0;
1817 }
1818 
test_scanf(void)1819 static int test_scanf(void)
1820 {
1821 	unsigned long long ull;
1822 	unsigned long ul;
1823 	unsigned int u;
1824 	long long ll;
1825 	long l;
1826 	void *p;
1827 	int i;
1828 
1829 	/* return __LINE__ to point to the specific failure */
1830 
1831 	/* test EOF */
1832 	if (sscanf("", "foo") != EOF)
1833 		return __LINE__;
1834 
1835 	/* test simple literal without placeholder */
1836 	if (sscanf("foo", "foo") != 0)
1837 		return __LINE__;
1838 
1839 	/* test single placeholder */
1840 	if (sscanf("123", "%d", &i) != 1)
1841 		return __LINE__;
1842 
1843 	if (i != 123)
1844 		return __LINE__;
1845 
1846 	/* test multiple place holders and separators */
1847 	if (sscanf("a123b456c0x90", "a%db%uc%p", &i, &u, &p) != 3)
1848 		return __LINE__;
1849 
1850 	if (i != 123)
1851 		return __LINE__;
1852 
1853 	if (u != 456)
1854 		return __LINE__;
1855 
1856 	if (p != (void *)0x90)
1857 		return __LINE__;
1858 
1859 	/* test space handling */
1860 	if (sscanf("a    b1", "a b%d", &i) != 1)
1861 		return __LINE__;
1862 
1863 	if (i != 1)
1864 		return __LINE__;
1865 
1866 	/* test literal percent */
1867 	if (sscanf("a%1", "a%%%d", &i) != 1)
1868 		return __LINE__;
1869 
1870 	if (i != 1)
1871 		return __LINE__;
1872 
1873 	/* test stdint.h types */
1874 	if (sscanf("1|2|3|4|5|6",
1875 		   "%d|%ld|%lld|%u|%lu|%llu",
1876 		   &i, &l, &ll, &u, &ul, &ull) != 6)
1877 		return __LINE__;
1878 
1879 	if (i != 1 || l != 2 || ll != 3 ||
1880 	    u != 4 || ul != 5 || ull != 6)
1881 		return __LINE__;
1882 
1883 	return 0;
1884 }
1885 
test_printf_error(void)1886 static int test_printf_error(void)
1887 {
1888 	int fd, ret, saved_errno;
1889 
1890 	fd = open("/dev/full", O_RDWR);
1891 	if (fd == -1)
1892 		return 1;
1893 
1894 	errno = 0;
1895 	ret = dprintf(fd, "foo");
1896 	saved_errno = errno;
1897 	close(fd);
1898 
1899 	if (ret != -1)
1900 		return 2;
1901 
1902 	if (saved_errno != ENOSPC)
1903 		return 3;
1904 
1905 	return 0;
1906 }
1907 
test_asprintf(void)1908 int test_asprintf(void)
1909 {
1910 	char *str;
1911 	int ret;
1912 
1913 	ret = asprintf(&str, "foo%s", "bar");
1914 	if (ret == -1)
1915 		return 1;
1916 
1917 	if (ret != 6) {
1918 		free(str);
1919 		return 2;
1920 	}
1921 
1922 	if (memcmp(str, "foobar", 6) != 0) {
1923 		free(str);
1924 		return 3;
1925 	}
1926 
1927 	free(str);
1928 	return 0;
1929 }
1930 
run_printf(int min,int max)1931 static int run_printf(int min, int max)
1932 {
1933 	int test;
1934 	int ret = 0;
1935 
1936 	for (test = min; test >= 0 && test <= max; test++) {
1937 		int llen = 0; /* line length */
1938 
1939 		/* avoid leaving empty lines below, this will insert holes into
1940 		 * test numbers.
1941 		 */
1942 		switch (test + __LINE__ + 1) {
1943 		CASE_TEST(empty);        EXPECT_VFPRINTF(1, "", ""); break;
1944 		CASE_TEST(simple);       EXPECT_VFPRINTF(1, "foo", "foo"); break;
1945 		CASE_TEST(string);       EXPECT_VFPRINTF(1, "foo", "%s", "foo"); break;
1946 		CASE_TEST(number);       EXPECT_VFPRINTF(1, "1234", "%d", 1234); break;
1947 		CASE_TEST(negnumber);    EXPECT_VFPRINTF(1, "-1234", "%d", -1234); break;
1948 		CASE_TEST(num_sign);     EXPECT_VFPRINTF(1, "| 1|+2|+3|+4|5|", "|% d|%+d|% +d|%+ d|%#d|", 1, 2, 3, 4, 5); break;
1949 		CASE_TEST(unsigned);     EXPECT_VFPRINTF(1, "12345", "%u", 12345); break;
1950 		CASE_TEST(signed_max);   EXPECT_VFPRINTF(1, "2147483647", "%i", ~0u >> 1); break;
1951 		CASE_TEST(signed_min);   EXPECT_VFPRINTF(1, "-2147483648", "%i", (~0u >> 1) + 1); break;
1952 		CASE_TEST(unsigned_max); EXPECT_VFPRINTF(1, "4294967295", "%u", ~0u); break;
1953 		CASE_TEST(char);         EXPECT_VFPRINTF(1, "|c|d|   e|", "|%c|%.0c|%4c|", 'c', 'd', 'e'); break;
1954 		CASE_TEST(octal);        EXPECT_VFPRINTF(1, "|17|  0033||", "|%o|%6.4o|%.0o|", 017, 033, 0); break;
1955 		CASE_TEST(octal_max);    EXPECT_VFPRINTF(1, "1777777777777777777777", "%llo", ~0ULL); break;
1956 		CASE_TEST(octal_alt);    EXPECT_VFPRINTF(1, "|0|01|02|034|0|0|", "|%#o|%#o|%#02o|%#02o|%#.0o|%0-#o|", 0, 1, 2, 034, 0, 0); break;
1957 		CASE_TEST(hex_nolibc);   EXPECT_VFPRINTF(is_nolibc, "|f|d|", "|%x|%X|", 0xf, 0xd); break;
1958 		CASE_TEST(hex_libc);     EXPECT_VFPRINTF(!is_nolibc, "|f|D|", "|%x|%X|", 0xf, 0xd); break;
1959 		CASE_TEST(hex_alt);      EXPECT_VFPRINTF(1, "|0x1|  0x2|    0|", "|%#x|%#5x|%#5x|", 1, 2, 0); break;
1960 		CASE_TEST(hex_alt_prec); EXPECT_VFPRINTF(1, "| 0x02|0x03| 0x123|", "|%#5.2x|%#04x|%#6.2x|", 2, 3, 0x123); break;
1961 		CASE_TEST(hex_0_alt);    EXPECT_VFPRINTF(1, "|0|0000|   00|", "|%#x|%#04x|%#5.2x|", 0, 0, 0); break;
1962 		CASE_TEST(pointer);      EXPECT_VFPRINTF(1, "0x1", "%p", (void *) 0x1); break;
1963 		CASE_TEST(pointer_NULL); EXPECT_VFPRINTF(is_nolibc || is_glibc, "|(nil)|(nil)|", "|%p|%.4p|", (void *)0, (void *)0); break;
1964 		CASE_TEST(string_NULL);  EXPECT_VFPRINTF(is_nolibc || is_glibc, "|(null)||(null)|", "|%s|%.5s|%.6s|", (void *)0, (void *)0, (void *)0); break;
1965 		CASE_TEST(percent);      EXPECT_VFPRINTF(1, "a%d42%69%", "a%%d%d%%%d%%", 42, 69); break;
1966 		CASE_TEST(perc_qual);    EXPECT_VFPRINTF(is_nolibc || is_glibc, "a%d2", "a%-14l%d%d", 2); break;
1967 		CASE_TEST(invalid);      EXPECT_VFPRINTF(is_nolibc || is_glibc, "a%12yx3%y42%P", "a%12yx%d%y%d%P", 3, 42); break;
1968 		CASE_TEST(intmax_max);   EXPECT_VFPRINTF(1, "9223372036854775807", "%lld", ~0ULL >> 1); break;
1969 		CASE_TEST(intmax_min);   EXPECT_VFPRINTF(is_nolibc || is_glibc, "-9223372036854775808", "%Li", (~0ULL >> 1) + 1); break;
1970 		CASE_TEST(uintmax_max);  EXPECT_VFPRINTF(1, "18446744073709551615", "%ju", ~0ULL); break;
1971 		CASE_TEST(truncation);   EXPECT_VFPRINTF(1, "012345678901234567890123456789", "%s", "012345678901234567890123456789"); break;
1972 		CASE_TEST(string_width); EXPECT_VFPRINTF(1, "         1", "%10s", "1"); break;
1973 		CASE_TEST(string_trunc); EXPECT_VFPRINTF(1, "     12345", "%10.5s", "1234567890"); break;
1974 		CASE_TEST(string_var);   EXPECT_VFPRINTF(1, "| ab|ef | ij|kl |", "|%*.*s|%*.*s|%*.*s|%*.*s|", 3, 2, "abcd", -3, 2, "efgh", 3, -1, "ij", -3, -1, "kl"); break;
1975 		CASE_TEST(number_width); EXPECT_VFPRINTF(1, "         1", "%10d", 1); break;
1976 		CASE_TEST(number_left);  EXPECT_VFPRINTF(1, "|-5      |", "|%-8d|", -5); break;
1977 		CASE_TEST(string_align); EXPECT_VFPRINTF(1, "|foo     |", "|%-8s|", "foo"); break;
1978 		CASE_TEST(width_trunc);  EXPECT_VFPRINTF(1, "                             1", "%30d", 1); break;
1979 		CASE_TEST(width_tr_lft); EXPECT_VFPRINTF(1, "1                             ", "%-30d", 1); break;
1980 		CASE_TEST(number_pad);   EXPECT_VFPRINTF(1, "0000000005", "%010d", 5); break;
1981 		CASE_TEST(number_pad);   EXPECT_VFPRINTF(1, "|0000000005|0x1234|", "|%010d|%#01x|", 5, 0x1234); break;
1982 		CASE_TEST(num_pad_neg);  EXPECT_VFPRINTF(1, "-000000005", "%010d", -5); break;
1983 		CASE_TEST(num_pad_hex);  EXPECT_VFPRINTF(1, "00fffffffb", "%010x", -5); break;
1984 		CASE_TEST(num_pad_trunc);EXPECT_VFPRINTF(is_nolibc, "    0000000000000000000000000000005", "%035d", 5); break;  /* max 31 '0' can be added */
1985 		CASE_TEST(num_p_tr_libc);EXPECT_VFPRINTF(!is_nolibc, "00000000000000000000000000000000005", "%035d", 5); break;
1986 		CASE_TEST(number_prec);  EXPECT_VFPRINTF(1, "     00005", "%10.5d", 5); break;
1987 		CASE_TEST(num_prec_neg); EXPECT_VFPRINTF(1, "    -00005", "%10.5d", -5); break;
1988 		CASE_TEST(number_var);   EXPECT_VFPRINTF(1, "|    -00005|5 |", "|%*.*d|%*.*d|", 10, 5, -5, -2, -10, 5); break;
1989 		CASE_TEST(num_0_prec_0); EXPECT_VFPRINTF(1, "|| |+||||", "|%.0d|% .0d|%+.0d|%.0u|%.0x|%#.0x|", 0, 0, 0, 0, 0, 0); break;
1990 		CASE_TEST(errno);        errno = 22; EXPECT_VFPRINTF(is_nolibc, "errno=22", "%m"); break;
1991 		CASE_TEST(errno-neg);    errno = -22; EXPECT_VFPRINTF(is_nolibc, "errno=-22   ", "%-12m"); break;
1992 		CASE_TEST(scanf);        EXPECT_ZR(1, test_scanf()); break;
1993 		CASE_TEST(printf_error); EXPECT_ZR(1, test_printf_error()); break;
1994 		CASE_TEST(asprintf);     EXPECT_ZR(1, test_asprintf()); break;
1995 		case __LINE__:
1996 			return ret; /* must be last */
1997 		/* note: do not set any defaults so as to permit holes above */
1998 		}
1999 	}
2000 	return ret;
2001 }
2002 
2003 __attribute__((no_sanitize("undefined")))
smash_stack(void)2004 static int smash_stack(void)
2005 {
2006 	char buf[100];
2007 	volatile char *ptr = buf;
2008 	size_t i;
2009 
2010 	for (i = 0; i < 200; i++)
2011 		ptr[i] = 'P';
2012 
2013 	return 1;
2014 }
2015 
run_protection(int min,int max)2016 static int run_protection(int min __attribute__((unused)),
2017 			  int max __attribute__((unused)))
2018 {
2019 	pid_t pid;
2020 	int llen = 0, status;
2021 	struct rlimit rlimit = { 0, 0 };
2022 
2023 	llen += printf("0 -fstackprotector ");
2024 
2025 #if !defined(_NOLIBC_STACKPROTECTOR)
2026 	llen += printf("not supported");
2027 	result(llen, SKIPPED);
2028 	return 0;
2029 #endif
2030 
2031 #if defined(_NOLIBC_STACKPROTECTOR)
2032 	if (!__stack_chk_guard) {
2033 		llen += printf("__stack_chk_guard not initialized");
2034 		result(llen, FAIL);
2035 		return 1;
2036 	}
2037 #endif
2038 
2039 	pid = -1;
2040 	pid = fork();
2041 
2042 	switch (pid) {
2043 	case -1:
2044 		llen += printf("fork()");
2045 		result(llen, FAIL);
2046 		return 1;
2047 
2048 	case 0:
2049 		close(STDOUT_FILENO);
2050 		close(STDERR_FILENO);
2051 
2052 		prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
2053 		setrlimit(RLIMIT_CORE, &rlimit);
2054 		smash_stack();
2055 		return 1;
2056 
2057 	default:
2058 		pid = waitpid(pid, &status, 0);
2059 
2060 		if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
2061 			llen += printf("waitpid()");
2062 			result(llen, FAIL);
2063 			return 1;
2064 		}
2065 		result(llen, OK);
2066 		return 0;
2067 	}
2068 }
2069 
2070 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
prepare(void)2071 int prepare(void)
2072 {
2073 	struct stat stat_buf;
2074 
2075 	/* It's possible that /dev doesn't even exist or was not mounted, so
2076 	 * we'll try to create it, mount it, or create minimal entries into it.
2077 	 * We want at least /dev/null and /dev/console.
2078 	 */
2079 	if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
2080 		if (stat("/dev/console", &stat_buf) != 0 ||
2081 		    stat("/dev/null", &stat_buf) != 0 ||
2082 		    stat("/dev/zero", &stat_buf) != 0 ||
2083 		    stat("/dev/full", &stat_buf) != 0) {
2084 			/* try devtmpfs first, otherwise fall back to manual creation */
2085 			if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
2086 				mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
2087 				mknod("/dev/null",    0666 | S_IFCHR, makedev(1, 3));
2088 				mknod("/dev/zero",    0666 | S_IFCHR, makedev(1, 5));
2089 				mknod("/dev/full",    0666 | S_IFCHR, makedev(1, 7));
2090 			}
2091 		}
2092 	}
2093 
2094 	/* If no /dev/console was found before calling init, stdio is closed so
2095 	 * we need to reopen it from /dev/console. If it failed above, it will
2096 	 * still fail here and we cannot emit a message anyway.
2097 	 */
2098 	if (close(dup(1)) == -1) {
2099 		int fd = open("/dev/console", O_RDWR);
2100 
2101 		if (fd >= 0) {
2102 			if (fd != 0)
2103 				dup2(fd, 0);
2104 			if (fd != 1)
2105 				dup2(fd, 1);
2106 			if (fd != 2)
2107 				dup2(fd, 2);
2108 			if (fd > 2)
2109 				close(fd);
2110 			puts("\nSuccessfully reopened /dev/console.");
2111 		}
2112 	}
2113 
2114 	/* try to mount /proc if not mounted. Silently fail otherwise */
2115 	if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
2116 		if (stat("/proc/self", &stat_buf) != 0) {
2117 			/* If not mountable, remove /proc completely to avoid misuse */
2118 			if (mount("none", "/proc", "proc", 0, 0) != 0)
2119 				rmdir("/proc");
2120 		}
2121 	}
2122 
2123 	/* some tests rely on a writable /tmp */
2124 	mkdir("/tmp", 0755);
2125 
2126 	return 0;
2127 }
2128 
2129 /* This is the definition of known test names, with their functions */
2130 static const struct test test_names[] = {
2131 	/* add new tests here */
2132 	{ .name = "startup",    .func = run_startup    },
2133 	{ .name = "syscall",    .func = run_syscall    },
2134 	{ .name = "stdlib",     .func = run_stdlib     },
2135 	{ .name = "printf",     .func = run_printf     },
2136 	{ .name = "protection", .func = run_protection },
2137 	{ 0 }
2138 };
2139 
is_setting_valid(char * test)2140 static int is_setting_valid(char *test)
2141 {
2142 	int idx, len, test_len, valid = 0;
2143 	char delimiter;
2144 
2145 	if (!test)
2146 		return valid;
2147 
2148 	test_len = strlen(test);
2149 
2150 	for (idx = 0; test_names[idx].name; idx++) {
2151 		len = strlen(test_names[idx].name);
2152 		if (test_len < len)
2153 			continue;
2154 
2155 		if (strncmp(test, test_names[idx].name, len) != 0)
2156 			continue;
2157 
2158 		delimiter = test[len];
2159 		if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
2160 			continue;
2161 
2162 		valid = 1;
2163 		break;
2164 	}
2165 
2166 	return valid;
2167 }
2168 
main(int argc,char ** argv,char ** envp)2169 int main(int argc, char **argv, char **envp)
2170 {
2171 	int min = 0;
2172 	int max = INT_MAX;
2173 	int ret = 0;
2174 	int err;
2175 	int idx;
2176 	char *test;
2177 
2178 	argv0 = argv[0];
2179 	test_argc = argc;
2180 	test_argv = argv;
2181 	test_envp = envp;
2182 
2183 	/* when called as init, it's possible that no console was opened, for
2184 	 * example if no /dev file system was provided. We'll check that fd#1
2185 	 * was opened, and if not we'll attempt to create and open /dev/console
2186 	 * and /dev/null that we'll use for later tests.
2187 	 */
2188 	if (getpid() == 1)
2189 		prepare();
2190 
2191 	/* the definition of a series of tests comes from either argv[1] or the
2192 	 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
2193 	 * series of test names and optional ranges:
2194 	 *    syscall:5-15[:.*],stdlib:8-10
2195 	 */
2196 	test = argv[1];
2197 	if (!is_setting_valid(test))
2198 		test = getenv("NOLIBC_TEST");
2199 
2200 	if (is_setting_valid(test)) {
2201 		char *comma, *colon, *dash, *value;
2202 
2203 		do {
2204 			comma = strchr(test, ',');
2205 			if (comma)
2206 				*(comma++) = '\0';
2207 
2208 			colon = strchr(test, ':');
2209 			if (colon)
2210 				*(colon++) = '\0';
2211 
2212 			for (idx = 0; test_names[idx].name; idx++) {
2213 				if (strcmp(test, test_names[idx].name) == 0)
2214 					break;
2215 			}
2216 
2217 			if (test_names[idx].name) {
2218 				/* The test was named, it will be called at least
2219 				 * once. We may have an optional range at <colon>
2220 				 * here, which defaults to the full range.
2221 				 */
2222 				do {
2223 					min = 0; max = INT_MAX;
2224 					value = colon;
2225 					if (value && *value) {
2226 						colon = strchr(value, ':');
2227 						if (colon)
2228 							*(colon++) = '\0';
2229 
2230 						dash = strchr(value, '-');
2231 						if (dash)
2232 							*(dash++) = '\0';
2233 
2234 						/* support :val: :min-max: :min-: :-max: */
2235 						if (*value)
2236 							min = atoi(value);
2237 						if (!dash)
2238 							max = min;
2239 						else if (*dash)
2240 							max = atoi(dash);
2241 
2242 						value = colon;
2243 					}
2244 
2245 					/* now's time to call the test */
2246 					printf("Running test '%s'\n", test_names[idx].name);
2247 					err = test_names[idx].func(min, max);
2248 					ret += err;
2249 					printf("Errors during this test: %d\n\n", err);
2250 				} while (colon && *colon);
2251 			} else
2252 				printf("Ignoring unknown test name '%s'\n", test);
2253 
2254 			test = comma;
2255 		} while (test && *test);
2256 	} else {
2257 		/* no test mentioned, run everything */
2258 		for (idx = 0; test_names[idx].name; idx++) {
2259 			printf("Running test '%s'\n", test_names[idx].name);
2260 			err = test_names[idx].func(min, max);
2261 			ret += err;
2262 			printf("Errors during this test: %d\n\n", err);
2263 		}
2264 	}
2265 
2266 	printf("Total number of errors: %d\n", ret);
2267 
2268 	if (getpid() == 1) {
2269 		/* we're running as init, there's no other process on the
2270 		 * system, thus likely started from a VM for a quick check.
2271 		 * Exiting will provoke a kernel panic that may be reported
2272 		 * as an error by Qemu or the hypervisor, while stopping
2273 		 * cleanly will often be reported as a success. This allows
2274 		 * to use the output of this program for bisecting kernels.
2275 		 */
2276 		printf("Leaving init with final status: %d\n", !!ret);
2277 		if (ret == 0)
2278 			reboot(RB_POWER_OFF);
2279 #if defined(__x86_64__)
2280 		/* QEMU started with "-device isa-debug-exit -no-reboot" will
2281 		 * exit with status code 2N+1 when N is written to 0x501. We
2282 		 * hard-code the syscall here as it's arch-dependent.
2283 		 */
2284 		else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
2285 			__asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
2286 		/* if it does nothing, fall back to the regular panic */
2287 #endif
2288 	}
2289 
2290 	printf("Exiting with status %d\n", !!ret);
2291 	return !!ret;
2292 }
2293