1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #define _GNU_SOURCE
4 #define _LARGEFILE64_SOURCE
5
6 /* libc-specific include files
7 * The program may be built in 3 ways:
8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
10 * $(CC) with default libc => NOLIBC* never defined
11 */
12 #ifndef NOLIBC
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #ifndef _NOLIBC_STDIO_H
17 /* standard libcs need more includes */
18 #include <sys/auxv.h>
19 #include <sys/io.h>
20 #include <sys/ioctl.h>
21 #include <sys/mman.h>
22 #include <sys/mount.h>
23 #include <sys/prctl.h>
24 #include <sys/reboot.h>
25 #include <sys/resource.h>
26 #include <sys/stat.h>
27 #include <sys/syscall.h>
28 #include <sys/sysmacros.h>
29 #include <sys/time.h>
30 #include <sys/utsname.h>
31 #include <sys/wait.h>
32 #include <dirent.h>
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <poll.h>
36 #include <sched.h>
37 #include <signal.h>
38 #include <stdarg.h>
39 #include <stddef.h>
40 #include <stdint.h>
41 #include <unistd.h>
42 #include <limits.h>
43 #endif
44 #endif
45
46 #include "nolibc-test-linkage.h"
47
48 /* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
49 #define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
50 #define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
51
52 /* will be used to test initialization of environ */
53 static char **test_envp;
54
55 /* will be used to test initialization of argv */
56 static char **test_argv;
57
58 /* will be used to test initialization of argc */
59 static int test_argc;
60
61 /* will be used by some test cases as readable file, please don't write it */
62 static const char *argv0;
63
64 /* will be used by constructor tests */
65 static int constructor_test_value;
66
67 /* definition of a series of tests */
68 struct test {
69 const char *name; /* test name */
70 int (*func)(int min, int max); /* handler */
71 };
72
73 #ifndef _NOLIBC_STDLIB_H
itoa(int i)74 char *itoa(int i)
75 {
76 static char buf[12];
77 int ret;
78
79 ret = snprintf(buf, sizeof(buf), "%d", i);
80 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
81 }
82 #endif
83
84 #define CASE_ERR(err) \
85 case err: return #err
86
87 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
88 * or the decimal value for less common ones.
89 */
errorname(int err)90 static const char *errorname(int err)
91 {
92 switch (err) {
93 case 0: return "SUCCESS";
94 CASE_ERR(EPERM);
95 CASE_ERR(ENOENT);
96 CASE_ERR(ESRCH);
97 CASE_ERR(EINTR);
98 CASE_ERR(EIO);
99 CASE_ERR(ENXIO);
100 CASE_ERR(E2BIG);
101 CASE_ERR(ENOEXEC);
102 CASE_ERR(EBADF);
103 CASE_ERR(ECHILD);
104 CASE_ERR(EAGAIN);
105 CASE_ERR(ENOMEM);
106 CASE_ERR(EACCES);
107 CASE_ERR(EFAULT);
108 CASE_ERR(ENOTBLK);
109 CASE_ERR(EBUSY);
110 CASE_ERR(EEXIST);
111 CASE_ERR(EXDEV);
112 CASE_ERR(ENODEV);
113 CASE_ERR(ENOTDIR);
114 CASE_ERR(EISDIR);
115 CASE_ERR(EINVAL);
116 CASE_ERR(ENFILE);
117 CASE_ERR(EMFILE);
118 CASE_ERR(ENOTTY);
119 CASE_ERR(ETXTBSY);
120 CASE_ERR(EFBIG);
121 CASE_ERR(ENOSPC);
122 CASE_ERR(ESPIPE);
123 CASE_ERR(EROFS);
124 CASE_ERR(EMLINK);
125 CASE_ERR(EPIPE);
126 CASE_ERR(EDOM);
127 CASE_ERR(ERANGE);
128 CASE_ERR(ENOSYS);
129 CASE_ERR(EOVERFLOW);
130 default:
131 return itoa(err);
132 }
133 }
134
align_result(size_t llen)135 static void align_result(size_t llen)
136 {
137 const size_t align = 64;
138 char buf[align];
139 size_t n;
140
141 if (llen >= align)
142 return;
143
144 n = align - llen;
145 memset(buf, ' ', n);
146 buf[n] = '\0';
147 fputs(buf, stdout);
148 }
149
150 enum RESULT {
151 OK,
152 FAIL,
153 SKIPPED,
154 };
155
result(int llen,enum RESULT r)156 static void result(int llen, enum RESULT r)
157 {
158 const char *msg;
159
160 if (r == OK)
161 msg = " [OK]";
162 else if (r == SKIPPED)
163 msg = "[SKIPPED]";
164 else
165 msg = " [FAIL]";
166
167 align_result(llen);
168 puts(msg);
169 }
170
171 /* The tests below are intended to be used by the macroes, which evaluate
172 * expression <expr>, print the status to stdout, and update the "ret"
173 * variable to count failures. The functions themselves return the number
174 * of failures, thus either 0 or 1.
175 */
176
177 #define EXPECT_ZR(cond, expr) \
178 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
179
180 static __attribute__((unused))
expect_zr(int expr,int llen)181 int expect_zr(int expr, int llen)
182 {
183 int ret = !(expr == 0);
184
185 llen += printf(" = %d ", expr);
186 result(llen, ret ? FAIL : OK);
187 return ret;
188 }
189
190
191 #define EXPECT_NZ(cond, expr, val) \
192 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)
193
194 static __attribute__((unused))
expect_nz(int expr,int llen)195 int expect_nz(int expr, int llen)
196 {
197 int ret = !(expr != 0);
198
199 llen += printf(" = %d ", expr);
200 result(llen, ret ? FAIL : OK);
201 return ret;
202 }
203
204
205 #define EXPECT_EQ(cond, expr, val) \
206 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
207
208 static __attribute__((unused))
expect_eq(uint64_t expr,int llen,uint64_t val)209 int expect_eq(uint64_t expr, int llen, uint64_t val)
210 {
211 int ret = !(expr == val);
212
213 llen += printf(" = %lld ", (long long)expr);
214 result(llen, ret ? FAIL : OK);
215 return ret;
216 }
217
218
219 #define EXPECT_NE(cond, expr, val) \
220 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
221
222 static __attribute__((unused))
expect_ne(int expr,int llen,int val)223 int expect_ne(int expr, int llen, int val)
224 {
225 int ret = !(expr != val);
226
227 llen += printf(" = %d ", expr);
228 result(llen, ret ? FAIL : OK);
229 return ret;
230 }
231
232
233 #define EXPECT_GE(cond, expr, val) \
234 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
235
236 static __attribute__((unused))
expect_ge(int expr,int llen,int val)237 int expect_ge(int expr, int llen, int val)
238 {
239 int ret = !(expr >= val);
240
241 llen += printf(" = %d ", expr);
242 result(llen, ret ? FAIL : OK);
243 return ret;
244 }
245
246
247 #define EXPECT_GT(cond, expr, val) \
248 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
249
250 static __attribute__((unused))
expect_gt(int expr,int llen,int val)251 int expect_gt(int expr, int llen, int val)
252 {
253 int ret = !(expr > val);
254
255 llen += printf(" = %d ", expr);
256 result(llen, ret ? FAIL : OK);
257 return ret;
258 }
259
260
261 #define EXPECT_LE(cond, expr, val) \
262 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
263
264 static __attribute__((unused))
expect_le(int expr,int llen,int val)265 int expect_le(int expr, int llen, int val)
266 {
267 int ret = !(expr <= val);
268
269 llen += printf(" = %d ", expr);
270 result(llen, ret ? FAIL : OK);
271 return ret;
272 }
273
274
275 #define EXPECT_LT(cond, expr, val) \
276 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
277
278 static __attribute__((unused))
expect_lt(int expr,int llen,int val)279 int expect_lt(int expr, int llen, int val)
280 {
281 int ret = !(expr < val);
282
283 llen += printf(" = %d ", expr);
284 result(llen, ret ? FAIL : OK);
285 return ret;
286 }
287
288
289 #define EXPECT_SYSZR(cond, expr) \
290 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
291
292 static __attribute__((unused))
expect_syszr(int expr,int llen)293 int expect_syszr(int expr, int llen)
294 {
295 int ret = 0;
296
297 if (expr) {
298 ret = 1;
299 llen += printf(" = %d %s ", expr, errorname(errno));
300 result(llen, FAIL);
301 } else {
302 llen += printf(" = %d ", expr);
303 result(llen, OK);
304 }
305 return ret;
306 }
307
308
309 #define EXPECT_SYSEQ(cond, expr, val) \
310 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
311
312 static __attribute__((unused))
expect_syseq(int expr,int llen,int val)313 int expect_syseq(int expr, int llen, int val)
314 {
315 int ret = 0;
316
317 if (expr != val) {
318 ret = 1;
319 llen += printf(" = %d %s ", expr, errorname(errno));
320 result(llen, FAIL);
321 } else {
322 llen += printf(" = %d ", expr);
323 result(llen, OK);
324 }
325 return ret;
326 }
327
328
329 #define EXPECT_SYSNE(cond, expr, val) \
330 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
331
332 static __attribute__((unused))
expect_sysne(int expr,int llen,int val)333 int expect_sysne(int expr, int llen, int val)
334 {
335 int ret = 0;
336
337 if (expr == val) {
338 ret = 1;
339 llen += printf(" = %d %s ", expr, errorname(errno));
340 result(llen, FAIL);
341 } else {
342 llen += printf(" = %d ", expr);
343 result(llen, OK);
344 }
345 return ret;
346 }
347
348
349 #define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
350 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
351
352 #define EXPECT_SYSER(cond, expr, expret, experr) \
353 EXPECT_SYSER2(cond, expr, expret, experr, 0)
354
355 static __attribute__((unused))
expect_syserr2(int expr,int expret,int experr1,int experr2,int llen)356 int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
357 {
358 int ret = 0;
359 int _errno = errno;
360
361 llen += printf(" = %d %s ", expr, errorname(_errno));
362 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
363 ret = 1;
364 if (experr2 == 0)
365 llen += printf(" != (%d %s) ", expret, errorname(experr1));
366 else
367 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
368 result(llen, FAIL);
369 } else {
370 result(llen, OK);
371 }
372 return ret;
373 }
374
375
376 #define EXPECT_PTRZR(cond, expr) \
377 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
378
379 static __attribute__((unused))
expect_ptrzr(const void * expr,int llen)380 int expect_ptrzr(const void *expr, int llen)
381 {
382 int ret = 0;
383
384 llen += printf(" = <%p> ", expr);
385 if (expr) {
386 ret = 1;
387 result(llen, FAIL);
388 } else {
389 result(llen, OK);
390 }
391 return ret;
392 }
393
394
395 #define EXPECT_PTRNZ(cond, expr) \
396 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
397
398 static __attribute__((unused))
expect_ptrnz(const void * expr,int llen)399 int expect_ptrnz(const void *expr, int llen)
400 {
401 int ret = 0;
402
403 llen += printf(" = <%p> ", expr);
404 if (!expr) {
405 ret = 1;
406 result(llen, FAIL);
407 } else {
408 result(llen, OK);
409 }
410 return ret;
411 }
412
413 #define EXPECT_PTREQ(cond, expr, cmp) \
414 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
415
416 static __attribute__((unused))
expect_ptreq(const void * expr,int llen,const void * cmp)417 int expect_ptreq(const void *expr, int llen, const void *cmp)
418 {
419 int ret = 0;
420
421 llen += printf(" = <%p> ", expr);
422 if (expr != cmp) {
423 ret = 1;
424 result(llen, FAIL);
425 } else {
426 result(llen, OK);
427 }
428 return ret;
429 }
430
431 #define EXPECT_PTRNE(cond, expr, cmp) \
432 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
433
434 static __attribute__((unused))
expect_ptrne(const void * expr,int llen,const void * cmp)435 int expect_ptrne(const void *expr, int llen, const void *cmp)
436 {
437 int ret = 0;
438
439 llen += printf(" = <%p> ", expr);
440 if (expr == cmp) {
441 ret = 1;
442 result(llen, FAIL);
443 } else {
444 result(llen, OK);
445 }
446 return ret;
447 }
448
449 #define EXPECT_PTRGE(cond, expr, cmp) \
450 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
451
452 static __attribute__((unused))
expect_ptrge(const void * expr,int llen,const void * cmp)453 int expect_ptrge(const void *expr, int llen, const void *cmp)
454 {
455 int ret = !(expr >= cmp);
456
457 llen += printf(" = <%p> ", expr);
458 result(llen, ret ? FAIL : OK);
459 return ret;
460 }
461
462 #define EXPECT_PTRGT(cond, expr, cmp) \
463 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
464
465 static __attribute__((unused))
expect_ptrgt(const void * expr,int llen,const void * cmp)466 int expect_ptrgt(const void *expr, int llen, const void *cmp)
467 {
468 int ret = !(expr > cmp);
469
470 llen += printf(" = <%p> ", expr);
471 result(llen, ret ? FAIL : OK);
472 return ret;
473 }
474
475
476 #define EXPECT_PTRLE(cond, expr, cmp) \
477 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
478
479 static __attribute__((unused))
expect_ptrle(const void * expr,int llen,const void * cmp)480 int expect_ptrle(const void *expr, int llen, const void *cmp)
481 {
482 int ret = !(expr <= cmp);
483
484 llen += printf(" = <%p> ", expr);
485 result(llen, ret ? FAIL : OK);
486 return ret;
487 }
488
489
490 #define EXPECT_PTRLT(cond, expr, cmp) \
491 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
492
493 static __attribute__((unused))
expect_ptrlt(const void * expr,int llen,const void * cmp)494 int expect_ptrlt(const void *expr, int llen, const void *cmp)
495 {
496 int ret = !(expr < cmp);
497
498 llen += printf(" = <%p> ", expr);
499 result(llen, ret ? FAIL : OK);
500 return ret;
501 }
502
503 #define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
504 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
505
506 #define EXPECT_PTRER(cond, expr, expret, experr) \
507 EXPECT_PTRER2(cond, expr, expret, experr, 0)
508
509 static __attribute__((unused))
expect_ptrerr2(const void * expr,const void * expret,int experr1,int experr2,int llen)510 int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
511 {
512 int ret = 0;
513 int _errno = errno;
514
515 llen += printf(" = <%p> %s ", expr, errorname(_errno));
516 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
517 ret = 1;
518 if (experr2 == 0)
519 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
520 else
521 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
522 result(llen, FAIL);
523 } else {
524 result(llen, OK);
525 }
526 return ret;
527 }
528
529 #define EXPECT_STRZR(cond, expr) \
530 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
531
532 static __attribute__((unused))
expect_strzr(const char * expr,int llen)533 int expect_strzr(const char *expr, int llen)
534 {
535 int ret = 0;
536
537 llen += printf(" = <%s> ", expr);
538 if (expr) {
539 ret = 1;
540 result(llen, FAIL);
541 } else {
542 result(llen, OK);
543 }
544 return ret;
545 }
546
547
548 #define EXPECT_STRNZ(cond, expr) \
549 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
550
551 static __attribute__((unused))
expect_strnz(const char * expr,int llen)552 int expect_strnz(const char *expr, int llen)
553 {
554 int ret = 0;
555
556 llen += printf(" = <%s> ", expr);
557 if (!expr) {
558 ret = 1;
559 result(llen, FAIL);
560 } else {
561 result(llen, OK);
562 }
563 return ret;
564 }
565
566
567 #define EXPECT_STREQ(cond, expr, cmp) \
568 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
569
570 static __attribute__((unused))
expect_streq(const char * expr,int llen,const char * cmp)571 int expect_streq(const char *expr, int llen, const char *cmp)
572 {
573 int ret = 0;
574
575 llen += printf(" = <%s> ", expr);
576 if (strcmp(expr, cmp) != 0) {
577 ret = 1;
578 result(llen, FAIL);
579 } else {
580 result(llen, OK);
581 }
582 return ret;
583 }
584
585
586 #define EXPECT_STRNE(cond, expr, cmp) \
587 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
588
589 static __attribute__((unused))
expect_strne(const char * expr,int llen,const char * cmp)590 int expect_strne(const char *expr, int llen, const char *cmp)
591 {
592 int ret = 0;
593
594 llen += printf(" = <%s> ", expr);
595 if (strcmp(expr, cmp) == 0) {
596 ret = 1;
597 result(llen, FAIL);
598 } else {
599 result(llen, OK);
600 }
601 return ret;
602 }
603
604 #define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \
605 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)
606
607 static __attribute__((unused))
expect_str_buf_eq(size_t expr,const char * buf,size_t val,int llen,const char * cmp)608 int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)
609 {
610 llen += printf(" = %lu <%s> ", expr, buf);
611 if (strcmp(buf, cmp) != 0) {
612 result(llen, FAIL);
613 return 1;
614 }
615 if (expr != val) {
616 result(llen, FAIL);
617 return 1;
618 }
619
620 result(llen, OK);
621 return 0;
622 }
623
624 /* declare tests based on line numbers. There must be exactly one test per line. */
625 #define CASE_TEST(name) \
626 case __LINE__: llen += printf("%d %s", test, #name);
627
628 /* constructors validate that they are executed in definition order */
629 __attribute__((constructor))
constructor1(void)630 static void constructor1(void)
631 {
632 constructor_test_value = 1;
633 }
634
635 __attribute__((constructor))
constructor2(void)636 static void constructor2(void)
637 {
638 constructor_test_value *= 2;
639 }
640
run_startup(int min,int max)641 int run_startup(int min, int max)
642 {
643 int test;
644 int ret = 0;
645 /* kernel at least passes HOME and TERM, shell passes more */
646 int env_total = 2;
647 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
648 extern char end;
649 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
650 /* differ from nolibc, both glibc and musl have no global _auxv */
651 const unsigned long *test_auxv = (void *)-1;
652 #ifdef NOLIBC
653 test_auxv = _auxv;
654 #endif
655
656 for (test = min; test >= 0 && test <= max; test++) {
657 int llen = 0; /* line length */
658
659 /* avoid leaving empty lines below, this will insert holes into
660 * test numbers.
661 */
662 switch (test + __LINE__ + 1) {
663 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;
664 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
665 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
666 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
667 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
668 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
669 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
670 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
671 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
672 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
673 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
674 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
675 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
676 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
677 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;
678 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
679 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;
680 case __LINE__:
681 return ret; /* must be last */
682 /* note: do not set any defaults so as to permit holes above */
683 }
684 }
685 return ret;
686 }
687
688
689 /* used by some syscall tests below */
test_getdents64(const char * dir)690 int test_getdents64(const char *dir)
691 {
692 char buffer[4096];
693 int fd, ret;
694 int err;
695
696 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
697 if (ret < 0)
698 return ret;
699
700 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
701 err = errno;
702 close(fd);
703
704 errno = err;
705 return ret;
706 }
707
test_getpagesize(void)708 int test_getpagesize(void)
709 {
710 int x = getpagesize();
711 int c;
712
713 if (x < 0)
714 return x;
715
716 #if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
717 /*
718 * x86 family is always 4K page.
719 */
720 c = (x == 4096);
721 #elif defined(__aarch64__)
722 /*
723 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
724 * which are selected at kernel compilation time.
725 */
726 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
727 #else
728 /*
729 * Assuming other architectures must have at least 4K page.
730 */
731 c = (x >= 4096);
732 #endif
733
734 return !c;
735 }
736
test_fork(void)737 int test_fork(void)
738 {
739 int status;
740 pid_t pid;
741
742 /* flush the printf buffer to avoid child flush it */
743 fflush(stdout);
744 fflush(stderr);
745
746 pid = fork();
747
748 switch (pid) {
749 case -1:
750 return 1;
751
752 case 0:
753 exit(123);
754
755 default:
756 pid = waitpid(pid, &status, 0);
757
758 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
759 }
760 }
761
test_stat_timestamps(void)762 int test_stat_timestamps(void)
763 {
764 struct stat st;
765
766 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
767 return 1;
768
769 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
770 return 1;
771
772 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
773 return 1;
774
775 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
776 return 1;
777
778 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
779 return 1;
780
781 return 0;
782 }
783
test_uname(void)784 int test_uname(void)
785 {
786 struct utsname buf;
787 char osrelease[sizeof(buf.release)];
788 ssize_t r;
789 int fd;
790
791 memset(&buf.domainname, 'P', sizeof(buf.domainname));
792
793 if (uname(&buf))
794 return 1;
795
796 if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
797 return 1;
798
799 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
800 if (fd == -1)
801 return 1;
802
803 r = read(fd, osrelease, sizeof(osrelease));
804 if (r == -1)
805 return 1;
806
807 close(fd);
808
809 if (osrelease[r - 1] == '\n')
810 r--;
811
812 /* Validate one of the later fields to ensure field sizes are correct */
813 if (strncmp(osrelease, buf.release, r))
814 return 1;
815
816 /* Ensure the field domainname is set, it is missing from struct old_utsname */
817 if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
818 return 1;
819
820 return 0;
821 }
822
test_mmap_munmap(void)823 int test_mmap_munmap(void)
824 {
825 int ret, fd, i, page_size;
826 void *mem;
827 size_t file_size, length;
828 off_t offset, pa_offset;
829 struct stat stat_buf;
830 const char * const files[] = {
831 "/dev/zero",
832 "/proc/1/exe", "/proc/self/exe",
833 argv0,
834 NULL
835 };
836
837 page_size = getpagesize();
838 if (page_size < 0)
839 return 1;
840
841 /* find a right file to mmap, existed and accessible */
842 for (i = 0; files[i] != NULL; i++) {
843 ret = fd = open(files[i], O_RDONLY);
844 if (ret == -1)
845 continue;
846 else
847 break;
848 }
849 if (ret == -1)
850 return 1;
851
852 ret = stat(files[i], &stat_buf);
853 if (ret == -1)
854 goto end;
855
856 /* file size of the special /dev/zero is 0, let's assign one manually */
857 if (i == 0)
858 file_size = 3*page_size;
859 else
860 file_size = stat_buf.st_size;
861
862 offset = file_size - 1;
863 if (offset < 0)
864 offset = 0;
865 length = file_size - offset;
866 pa_offset = offset & ~(page_size - 1);
867
868 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
869 if (mem == MAP_FAILED) {
870 ret = 1;
871 goto end;
872 }
873
874 ret = munmap(mem, length + offset - pa_offset);
875
876 end:
877 close(fd);
878 return !!ret;
879 }
880
test_pipe(void)881 int test_pipe(void)
882 {
883 const char *const msg = "hello, nolibc";
884 int pipefd[2];
885 char buf[32];
886 size_t len;
887
888 if (pipe(pipefd) == -1)
889 return 1;
890
891 write(pipefd[1], msg, strlen(msg));
892 close(pipefd[1]);
893 len = read(pipefd[0], buf, sizeof(buf));
894 close(pipefd[0]);
895
896 if (len != strlen(msg))
897 return 1;
898
899 return !!memcmp(buf, msg, len);
900 }
901
test_rlimit(void)902 int test_rlimit(void)
903 {
904 struct rlimit rlim = {
905 .rlim_cur = 1 << 20,
906 .rlim_max = 1 << 21,
907 };
908 int ret;
909
910 ret = setrlimit(RLIMIT_CORE, &rlim);
911 if (ret)
912 return -1;
913
914 rlim.rlim_cur = 0;
915 rlim.rlim_max = 0;
916
917 ret = getrlimit(RLIMIT_CORE, &rlim);
918 if (ret)
919 return -1;
920
921 if (rlim.rlim_cur != 1 << 20)
922 return -1;
923 if (rlim.rlim_max != 1 << 21)
924 return -1;
925
926 return 0;
927 }
928
929
930 /* Run syscall tests between IDs <min> and <max>.
931 * Return 0 on success, non-zero on failure.
932 */
run_syscall(int min,int max)933 int run_syscall(int min, int max)
934 {
935 struct timeval tv;
936 struct timezone tz;
937 struct stat stat_buf;
938 int euid0;
939 int proc;
940 int test;
941 int tmp;
942 int ret = 0;
943 void *p1, *p2;
944 int has_gettid = 1;
945
946 /* <proc> indicates whether or not /proc is mounted */
947 proc = stat("/proc", &stat_buf) == 0;
948
949 /* this will be used to skip certain tests that can't be run unprivileged */
950 euid0 = geteuid() == 0;
951
952 /* from 2.30, glibc provides gettid() */
953 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
954 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
955 #endif
956
957 for (test = min; test >= 0 && test <= max; test++) {
958 int llen = 0; /* line length */
959
960 /* avoid leaving empty lines below, this will insert holes into
961 * test numbers.
962 */
963 switch (test + __LINE__ + 1) {
964 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
965 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
966 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
967 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
968 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
969 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
970 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
971 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
972 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break;
973 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
974 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
975 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
976 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
977 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
978 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
979 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
980 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
981 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
982 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
983 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
984 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
985 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
986 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
987 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
988 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
989 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
990 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
991 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
992 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
993 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
994 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
995 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
996 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
997 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
998 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
999 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
1000 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
1001 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
1002 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
1003 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
1004 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
1005 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
1006 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
1007 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
1008 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
1009 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
1010 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
1011 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
1012 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
1013 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
1014 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
1015 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
1016 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
1017 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
1018 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
1019 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
1020 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
1021 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
1022 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;
1023 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
1024 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
1025 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
1026 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
1027 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
1028 CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
1029 CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
1030 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
1031 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
1032 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
1033 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
1034 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
1035 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
1036 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
1037 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
1038 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
1039 case __LINE__:
1040 return ret; /* must be last */
1041 /* note: do not set any defaults so as to permit holes above */
1042 }
1043 }
1044 return ret;
1045 }
1046
run_stdlib(int min,int max)1047 int run_stdlib(int min, int max)
1048 {
1049 int test;
1050 int ret = 0;
1051
1052 for (test = min; test >= 0 && test <= max; test++) {
1053 int llen = 0; /* line length */
1054
1055 /* For functions that take a long buffer, like strlcat()
1056 * Add some more chars after the \0, to test functions that overwrite the buffer set
1057 * the \0 at the exact right position.
1058 */
1059 char buf[10] = "test123456";
1060 buf[4] = '\0';
1061
1062
1063 /* avoid leaving empty lines below, this will insert holes into
1064 * test numbers.
1065 */
1066 switch (test + __LINE__ + 1) {
1067 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
1068 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1069 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1070 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1071 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1072 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1073 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1074 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1075 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1076 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1077 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1078 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1079 #ifdef NOLIBC
1080 CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 0), buf, 3, "test"); break;
1081 CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 1), buf, 4, "test"); break;
1082 CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 5), buf, 7, "test"); break;
1083 CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
1084 CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
1085 CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(1, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
1086 CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
1087 CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 1), buf, 3, ""); break;
1088 CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
1089 CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
1090 CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(1, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
1091 #endif
1092 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1093 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1094 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1095 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1096 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1097 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1098 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1099 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1100 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1101 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1102 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1103 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1104 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1105 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1106 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1107 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1108 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1109 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1110 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1111 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1112 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1113 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1114 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1115 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1116 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1117 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1118 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1119 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1120 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1121 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1122 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1123 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1124 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1125 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1126 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1127 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1128 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1129 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1130 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1131 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1132 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1133 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1134 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1135 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1136 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1137 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1138 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1139 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1140 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1141 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1142
1143 case __LINE__:
1144 return ret; /* must be last */
1145 /* note: do not set any defaults so as to permit holes above */
1146 }
1147 }
1148 return ret;
1149 }
1150
1151 #define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1152 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1153
expect_vfprintf(int llen,int c,const char * expected,const char * fmt,...)1154 static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1155 {
1156 int ret, fd;
1157 ssize_t w, r;
1158 char buf[100];
1159 FILE *memfile;
1160 va_list args;
1161
1162 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);
1163 if (fd == -1) {
1164 result(llen, SKIPPED);
1165 return 0;
1166 }
1167
1168 memfile = fdopen(fd, "w+");
1169 if (!memfile) {
1170 result(llen, FAIL);
1171 return 1;
1172 }
1173
1174 va_start(args, fmt);
1175 w = vfprintf(memfile, fmt, args);
1176 va_end(args);
1177
1178 if (w != c) {
1179 llen += printf(" written(%d) != %d", (int)w, c);
1180 result(llen, FAIL);
1181 return 1;
1182 }
1183
1184 fflush(memfile);
1185 lseek(fd, 0, SEEK_SET);
1186
1187 r = read(fd, buf, sizeof(buf) - 1);
1188
1189 fclose(memfile);
1190
1191 if (r != w) {
1192 llen += printf(" written(%d) != read(%d)", (int)w, (int)r);
1193 result(llen, FAIL);
1194 return 1;
1195 }
1196
1197 buf[r] = '\0';
1198 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1199 ret = strncmp(expected, buf, c);
1200
1201 result(llen, ret ? FAIL : OK);
1202 return ret;
1203 }
1204
run_vfprintf(int min,int max)1205 static int run_vfprintf(int min, int max)
1206 {
1207 int test;
1208 int ret = 0;
1209
1210 for (test = min; test >= 0 && test <= max; test++) {
1211 int llen = 0; /* line length */
1212
1213 /* avoid leaving empty lines below, this will insert holes into
1214 * test numbers.
1215 */
1216 switch (test + __LINE__ + 1) {
1217 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1218 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1219 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1220 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1221 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1222 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1223 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1224 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1225 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1226 case __LINE__:
1227 return ret; /* must be last */
1228 /* note: do not set any defaults so as to permit holes above */
1229 }
1230 }
1231 return ret;
1232 }
1233
smash_stack(void)1234 static int smash_stack(void)
1235 {
1236 char buf[100];
1237 volatile char *ptr = buf;
1238 size_t i;
1239
1240 for (i = 0; i < 200; i++)
1241 ptr[i] = 'P';
1242
1243 return 1;
1244 }
1245
run_protection(int min,int max)1246 static int run_protection(int min __attribute__((unused)),
1247 int max __attribute__((unused)))
1248 {
1249 pid_t pid;
1250 int llen = 0, status;
1251 struct rlimit rlimit = { 0, 0 };
1252
1253 llen += printf("0 -fstackprotector ");
1254
1255 #if !defined(_NOLIBC_STACKPROTECTOR)
1256 llen += printf("not supported");
1257 result(llen, SKIPPED);
1258 return 0;
1259 #endif
1260
1261 #if defined(_NOLIBC_STACKPROTECTOR)
1262 if (!__stack_chk_guard) {
1263 llen += printf("__stack_chk_guard not initialized");
1264 result(llen, FAIL);
1265 return 1;
1266 }
1267 #endif
1268
1269 pid = -1;
1270 pid = fork();
1271
1272 switch (pid) {
1273 case -1:
1274 llen += printf("fork()");
1275 result(llen, FAIL);
1276 return 1;
1277
1278 case 0:
1279 close(STDOUT_FILENO);
1280 close(STDERR_FILENO);
1281
1282 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1283 setrlimit(RLIMIT_CORE, &rlimit);
1284 smash_stack();
1285 return 1;
1286
1287 default:
1288 pid = waitpid(pid, &status, 0);
1289
1290 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1291 llen += printf("waitpid()");
1292 result(llen, FAIL);
1293 return 1;
1294 }
1295 result(llen, OK);
1296 return 0;
1297 }
1298 }
1299
1300 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
prepare(void)1301 int prepare(void)
1302 {
1303 struct stat stat_buf;
1304
1305 /* It's possible that /dev doesn't even exist or was not mounted, so
1306 * we'll try to create it, mount it, or create minimal entries into it.
1307 * We want at least /dev/null and /dev/console.
1308 */
1309 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1310 if (stat("/dev/console", &stat_buf) != 0 ||
1311 stat("/dev/null", &stat_buf) != 0 ||
1312 stat("/dev/zero", &stat_buf) != 0) {
1313 /* try devtmpfs first, otherwise fall back to manual creation */
1314 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1315 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1316 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1317 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1318 }
1319 }
1320 }
1321
1322 /* If no /dev/console was found before calling init, stdio is closed so
1323 * we need to reopen it from /dev/console. If it failed above, it will
1324 * still fail here and we cannot emit a message anyway.
1325 */
1326 if (close(dup(1)) == -1) {
1327 int fd = open("/dev/console", O_RDWR);
1328
1329 if (fd >= 0) {
1330 if (fd != 0)
1331 dup2(fd, 0);
1332 if (fd != 1)
1333 dup2(fd, 1);
1334 if (fd != 2)
1335 dup2(fd, 2);
1336 if (fd > 2)
1337 close(fd);
1338 puts("\nSuccessfully reopened /dev/console.");
1339 }
1340 }
1341
1342 /* try to mount /proc if not mounted. Silently fail otherwise */
1343 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1344 if (stat("/proc/self", &stat_buf) != 0) {
1345 /* If not mountable, remove /proc completely to avoid misuse */
1346 if (mount("none", "/proc", "proc", 0, 0) != 0)
1347 rmdir("/proc");
1348 }
1349 }
1350
1351 /* some tests rely on a writable /tmp */
1352 mkdir("/tmp", 0755);
1353
1354 return 0;
1355 }
1356
1357 /* This is the definition of known test names, with their functions */
1358 static const struct test test_names[] = {
1359 /* add new tests here */
1360 { .name = "startup", .func = run_startup },
1361 { .name = "syscall", .func = run_syscall },
1362 { .name = "stdlib", .func = run_stdlib },
1363 { .name = "vfprintf", .func = run_vfprintf },
1364 { .name = "protection", .func = run_protection },
1365 { 0 }
1366 };
1367
is_setting_valid(char * test)1368 static int is_setting_valid(char *test)
1369 {
1370 int idx, len, test_len, valid = 0;
1371 char delimiter;
1372
1373 if (!test)
1374 return valid;
1375
1376 test_len = strlen(test);
1377
1378 for (idx = 0; test_names[idx].name; idx++) {
1379 len = strlen(test_names[idx].name);
1380 if (test_len < len)
1381 continue;
1382
1383 if (strncmp(test, test_names[idx].name, len) != 0)
1384 continue;
1385
1386 delimiter = test[len];
1387 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1388 continue;
1389
1390 valid = 1;
1391 break;
1392 }
1393
1394 return valid;
1395 }
1396
main(int argc,char ** argv,char ** envp)1397 int main(int argc, char **argv, char **envp)
1398 {
1399 int min = 0;
1400 int max = INT_MAX;
1401 int ret = 0;
1402 int err;
1403 int idx;
1404 char *test;
1405
1406 argv0 = argv[0];
1407 test_argc = argc;
1408 test_argv = argv;
1409 test_envp = envp;
1410
1411 /* when called as init, it's possible that no console was opened, for
1412 * example if no /dev file system was provided. We'll check that fd#1
1413 * was opened, and if not we'll attempt to create and open /dev/console
1414 * and /dev/null that we'll use for later tests.
1415 */
1416 if (getpid() == 1)
1417 prepare();
1418
1419 /* the definition of a series of tests comes from either argv[1] or the
1420 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1421 * series of test names and optional ranges:
1422 * syscall:5-15[:.*],stdlib:8-10
1423 */
1424 test = argv[1];
1425 if (!is_setting_valid(test))
1426 test = getenv("NOLIBC_TEST");
1427
1428 if (is_setting_valid(test)) {
1429 char *comma, *colon, *dash, *value;
1430
1431 do {
1432 comma = strchr(test, ',');
1433 if (comma)
1434 *(comma++) = '\0';
1435
1436 colon = strchr(test, ':');
1437 if (colon)
1438 *(colon++) = '\0';
1439
1440 for (idx = 0; test_names[idx].name; idx++) {
1441 if (strcmp(test, test_names[idx].name) == 0)
1442 break;
1443 }
1444
1445 if (test_names[idx].name) {
1446 /* The test was named, it will be called at least
1447 * once. We may have an optional range at <colon>
1448 * here, which defaults to the full range.
1449 */
1450 do {
1451 min = 0; max = INT_MAX;
1452 value = colon;
1453 if (value && *value) {
1454 colon = strchr(value, ':');
1455 if (colon)
1456 *(colon++) = '\0';
1457
1458 dash = strchr(value, '-');
1459 if (dash)
1460 *(dash++) = '\0';
1461
1462 /* support :val: :min-max: :min-: :-max: */
1463 if (*value)
1464 min = atoi(value);
1465 if (!dash)
1466 max = min;
1467 else if (*dash)
1468 max = atoi(dash);
1469
1470 value = colon;
1471 }
1472
1473 /* now's time to call the test */
1474 printf("Running test '%s'\n", test_names[idx].name);
1475 err = test_names[idx].func(min, max);
1476 ret += err;
1477 printf("Errors during this test: %d\n\n", err);
1478 } while (colon && *colon);
1479 } else
1480 printf("Ignoring unknown test name '%s'\n", test);
1481
1482 test = comma;
1483 } while (test && *test);
1484 } else {
1485 /* no test mentioned, run everything */
1486 for (idx = 0; test_names[idx].name; idx++) {
1487 printf("Running test '%s'\n", test_names[idx].name);
1488 err = test_names[idx].func(min, max);
1489 ret += err;
1490 printf("Errors during this test: %d\n\n", err);
1491 }
1492 }
1493
1494 printf("Total number of errors: %d\n", ret);
1495
1496 if (getpid() == 1) {
1497 /* we're running as init, there's no other process on the
1498 * system, thus likely started from a VM for a quick check.
1499 * Exiting will provoke a kernel panic that may be reported
1500 * as an error by Qemu or the hypervisor, while stopping
1501 * cleanly will often be reported as a success. This allows
1502 * to use the output of this program for bisecting kernels.
1503 */
1504 printf("Leaving init with final status: %d\n", !!ret);
1505 if (ret == 0)
1506 reboot(RB_POWER_OFF);
1507 #if defined(__x86_64__)
1508 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1509 * exit with status code 2N+1 when N is written to 0x501. We
1510 * hard-code the syscall here as it's arch-dependent.
1511 */
1512 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
1513 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
1514 /* if it does nothing, fall back to the regular panic */
1515 #endif
1516 }
1517
1518 printf("Exiting with status %d\n", !!ret);
1519 return !!ret;
1520 }
1521