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