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tools/nolibc: fix return type of getpagesize()
[linux-block.git] / tools / testing / selftests / nolibc / nolibc-test.c
CommitLineData
fddc8f81 1/* SPDX-License-Identifier: GPL-2.0 */
362aecb2 2
1da02f51 3#define _GNU_SOURCE
5f2de00e 4#define _LARGEFILE64_SOURCE
1da02f51 5
362aecb2 6/* libc-specific include files
1da02f51 7 * The program may be built in 3 ways:
362aecb2 8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
1da02f51
WT		 9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
10 * $(CC) with default libc => NOLIBC* never defined
362aecb2
WT		 11 */
12#ifndef NOLIBC
13#include <stdio.h>
14#include <stdlib.h>
15#include <string.h>
1da02f51
WT		 16#ifndef _NOLIBC_STDIO_H
17/* standard libcs need more includes */
48967b73 18#include <sys/auxv.h>
1da02f51
WT		 19#include <sys/io.h>
20#include <sys/ioctl.h>
69f2cd9f 21#include <sys/mman.h>
1da02f51 22#include <sys/mount.h>
208aa9d9 23#include <sys/prctl.h>
1da02f51
WT		 24#include <sys/reboot.h>
25#include <sys/stat.h>
26#include <sys/syscall.h>
27#include <sys/sysmacros.h>
28#include <sys/time.h>
29#include <sys/wait.h>
30#include <dirent.h>
31#include <errno.h>
32#include <fcntl.h>
33#include <poll.h>
34#include <sched.h>
35#include <signal.h>
36#include <stdarg.h>
2df07fc5
WT		 37#include <stddef.h>
38#include <stdint.h>
1da02f51 39#include <unistd.h>
bd27fef3 40#include <limits.h>
1da02f51 41#endif
362aecb2
WT		 42#endif
43
989abf1c
ZW		 44/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
45#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
46#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
47
67d108e2
TW		 48/* will be used to test initialization of environ */
49static char **test_envp;
362aecb2 50
48967b73
ZW		 51/* will be used to test initialization of argv */
52static char **test_argv;
53
54/* will be used to test initialization of argc */
55static int test_argc;
56
938b5b98
ZW		 57/* will be used by some test cases as readable file, please don't write it */
58static const char *argv0;
59
23da7bc9
WT		 60/* definition of a series of tests */
61struct test {
fddc8f81
TW		 62 const char *name; /* test name */
63 int (*func)(int min, int max); /* handler */
23da7bc9
WT		 64};
65
1da02f51
WT		 66#ifndef _NOLIBC_STDLIB_H
67char *itoa(int i)
68{
69 static char buf[12];
70 int ret;
71
72 ret = snprintf(buf, sizeof(buf), "%d", i);
73 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
74}
75#endif
76
362aecb2
WT		 77#define CASE_ERR(err) \
78 case err: return #err
79
80/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
81 * or the decimal value for less common ones.
82 */
83const char *errorname(int err)
84{
85 switch (err) {
86 case 0: return "SUCCESS";
87 CASE_ERR(EPERM);
88 CASE_ERR(ENOENT);
89 CASE_ERR(ESRCH);
90 CASE_ERR(EINTR);
91 CASE_ERR(EIO);
92 CASE_ERR(ENXIO);
93 CASE_ERR(E2BIG);
94 CASE_ERR(ENOEXEC);
95 CASE_ERR(EBADF);
96 CASE_ERR(ECHILD);
97 CASE_ERR(EAGAIN);
98 CASE_ERR(ENOMEM);
99 CASE_ERR(EACCES);
100 CASE_ERR(EFAULT);
101 CASE_ERR(ENOTBLK);
102 CASE_ERR(EBUSY);
103 CASE_ERR(EEXIST);
104 CASE_ERR(EXDEV);
105 CASE_ERR(ENODEV);
106 CASE_ERR(ENOTDIR);
107 CASE_ERR(EISDIR);
108 CASE_ERR(EINVAL);
109 CASE_ERR(ENFILE);
110 CASE_ERR(EMFILE);
111 CASE_ERR(ENOTTY);
112 CASE_ERR(ETXTBSY);
113 CASE_ERR(EFBIG);
114 CASE_ERR(ENOSPC);
115 CASE_ERR(ESPIPE);
116 CASE_ERR(EROFS);
117 CASE_ERR(EMLINK);
118 CASE_ERR(EPIPE);
119 CASE_ERR(EDOM);
120 CASE_ERR(ERANGE);
121 CASE_ERR(ENOSYS);
758f970f 122 CASE_ERR(EOVERFLOW);
362aecb2
WT		 123 default:
124 return itoa(err);
125 }
126}
127
443de903
TW		 128static void putcharn(char c, size_t n)
129{
130 char buf[64];
131
132 memset(buf, c, n);
133 buf[n] = '\0';
134 fputs(buf, stdout);
135}
136
b184a261
TW		 137enum RESULT {
138 OK,
139 FAIL,
140 SKIPPED,
141};
142
143static void result(int llen, enum RESULT r)
362aecb2 144{
b184a261 145 const char *msg;
362aecb2 146
b184a261
TW		 147 if (r == OK)
148 msg = " [OK]";
149 else if (r == SKIPPED)
150 msg = "[SKIPPED]";
151 else
152 msg = "[FAIL]";
362aecb2 153
447e5602
TW		 154 if (llen < 64)
155 putcharn(' ', 64 - llen);
b184a261 156 puts(msg);
362aecb2
WT		 157}
158
159/* The tests below are intended to be used by the macroes, which evaluate
160 * expression <expr>, print the status to stdout, and update the "ret"
161 * variable to count failures. The functions themselves return the number
162 * of failures, thus either 0 or 1.
163 */
164
165#define EXPECT_ZR(cond, expr) \
b184a261 166 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
362aecb2
WT		 167
168static int expect_zr(int expr, int llen)
169{
170 int ret = !(expr == 0);
171
172 llen += printf(" = %d ", expr);
b184a261 173 result(llen, ret ? FAIL : OK);
362aecb2
WT		 174 return ret;
175}
176
177
178#define EXPECT_NZ(cond, expr, val) \
b184a261 179 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)
362aecb2
WT		 180
181static int expect_nz(int expr, int llen)
182{
183 int ret = !(expr != 0);
184
185 llen += printf(" = %d ", expr);
b184a261 186 result(llen, ret ? FAIL : OK);
362aecb2
WT		 187 return ret;
188}
189
190
191#define EXPECT_EQ(cond, expr, val) \
b184a261 192 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
362aecb2 193
a0994fb9 194static int expect_eq(uint64_t expr, int llen, uint64_t val)
362aecb2
WT		 195{
196 int ret = !(expr == val);
197
0858aec4 198 llen += printf(" = %lld ", (long long)expr);
b184a261 199 result(llen, ret ? FAIL : OK);
362aecb2
WT		 200 return ret;
201}
202
203
204#define EXPECT_NE(cond, expr, val) \
b184a261 205 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
362aecb2
WT		 206
207static int expect_ne(int expr, int llen, int val)
208{
209 int ret = !(expr != val);
210
211 llen += printf(" = %d ", expr);
b184a261 212 result(llen, ret ? FAIL : OK);
362aecb2
WT		 213 return ret;
214}
215
216
217#define EXPECT_GE(cond, expr, val) \
b184a261 218 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
362aecb2
WT		 219
220static int expect_ge(int expr, int llen, int val)
221{
222 int ret = !(expr >= val);
223
224 llen += printf(" = %d ", expr);
b184a261 225 result(llen, ret ? FAIL : OK);
362aecb2
WT		 226 return ret;
227}
228
229
230#define EXPECT_GT(cond, expr, val) \
b184a261 231 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
362aecb2
WT		 232
233static int expect_gt(int expr, int llen, int val)
234{
235 int ret = !(expr > val);
236
237 llen += printf(" = %d ", expr);
b184a261 238 result(llen, ret ? FAIL : OK);
362aecb2
WT		 239 return ret;
240}
241
242
243#define EXPECT_LE(cond, expr, val) \
b184a261 244 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
362aecb2
WT		 245
246static int expect_le(int expr, int llen, int val)
247{
248 int ret = !(expr <= val);
249
250 llen += printf(" = %d ", expr);
b184a261 251 result(llen, ret ? FAIL : OK);
362aecb2
WT		 252 return ret;
253}
254
255
256#define EXPECT_LT(cond, expr, val) \
b184a261 257 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
362aecb2
WT		 258
259static int expect_lt(int expr, int llen, int val)
260{
261 int ret = !(expr < val);
262
263 llen += printf(" = %d ", expr);
b184a261 264 result(llen, ret ? FAIL : OK);
362aecb2
WT		 265 return ret;
266}
267
268
269#define EXPECT_SYSZR(cond, expr) \
b184a261 270 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
362aecb2
WT		 271
272static int expect_syszr(int expr, int llen)
273{
274 int ret = 0;
275
276 if (expr) {
277 ret = 1;
278 llen += printf(" = %d %s ", expr, errorname(errno));
b184a261 279 result(llen, FAIL);
362aecb2
WT		 280 } else {
281 llen += printf(" = %d ", expr);
b184a261 282 result(llen, OK);
362aecb2
WT		 283 }
284 return ret;
285}
286
287
288#define EXPECT_SYSEQ(cond, expr, val) \
b184a261 289 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
362aecb2
WT		 290
291static int expect_syseq(int expr, int llen, int val)
292{
293 int ret = 0;
294
295 if (expr != val) {
296 ret = 1;
297 llen += printf(" = %d %s ", expr, errorname(errno));
b184a261 298 result(llen, FAIL);
362aecb2
WT		 299 } else {
300 llen += printf(" = %d ", expr);
b184a261 301 result(llen, OK);
362aecb2
WT		 302 }
303 return ret;
304}
305
306
307#define EXPECT_SYSNE(cond, expr, val) \
b184a261 308 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
362aecb2
WT		 309
310static int expect_sysne(int expr, int llen, int val)
311{
312 int ret = 0;
313
314 if (expr == val) {
315 ret = 1;
316 llen += printf(" = %d %s ", expr, errorname(errno));
b184a261 317 result(llen, FAIL);
362aecb2
WT		 318 } else {
319 llen += printf(" = %d ", expr);
b184a261 320 result(llen, OK);
362aecb2
WT		 321 }
322 return ret;
323}
324
325
75d75a7b 326#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
b184a261 327 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
75d75a7b 328
362aecb2 329#define EXPECT_SYSER(cond, expr, expret, experr) \
75d75a7b 330 EXPECT_SYSER2(cond, expr, expret, experr, 0)
362aecb2 331
75d75a7b 332static int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
362aecb2
WT		 333{
334 int ret = 0;
335 int _errno = errno;
336
337 llen += printf(" = %d %s ", expr, errorname(_errno));
75d75a7b 338 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
362aecb2 339 ret = 1;
75d75a7b
ZW		 340 if (experr2 == 0)
341 llen += printf(" != (%d %s) ", expret, errorname(experr1));
342 else
343 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
b184a261 344 result(llen, FAIL);
362aecb2 345 } else {
b184a261 346 result(llen, OK);
362aecb2
WT		 347 }
348 return ret;
349}
350
351
352#define EXPECT_PTRZR(cond, expr) \
b184a261 353 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
362aecb2
WT		 354
355static int expect_ptrzr(const void *expr, int llen)
356{
357 int ret = 0;
358
359 llen += printf(" = <%p> ", expr);
360 if (expr) {
361 ret = 1;
b184a261 362 result(llen, FAIL);
362aecb2 363 } else {
b184a261 364 result(llen, OK);
362aecb2
WT		 365 }
366 return ret;
367}
368
369
370#define EXPECT_PTRNZ(cond, expr) \
b184a261 371 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
362aecb2
WT		 372
373static int expect_ptrnz(const void *expr, int llen)
374{
375 int ret = 0;
376
377 llen += printf(" = <%p> ", expr);
378 if (!expr) {
379 ret = 1;
b184a261 380 result(llen, FAIL);
362aecb2 381 } else {
b184a261 382 result(llen, OK);
362aecb2
WT		 383 }
384 return ret;
385}
386
29f5540b 387#define EXPECT_PTREQ(cond, expr, cmp) \
b184a261 388 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
29f5540b
ZW		 389
390static int expect_ptreq(const void *expr, int llen, const void *cmp)
391{
392 int ret = 0;
393
394 llen += printf(" = <%p> ", expr);
395 if (expr != cmp) {
396 ret = 1;
b184a261 397 result(llen, FAIL);
29f5540b 398 } else {
b184a261 399 result(llen, OK);
29f5540b
ZW		 400 }
401 return ret;
402}
403
404#define EXPECT_PTRNE(cond, expr, cmp) \
b184a261 405 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
29f5540b
ZW		 406
407static int expect_ptrne(const void *expr, int llen, const void *cmp)
408{
409 int ret = 0;
410
411 llen += printf(" = <%p> ", expr);
412 if (expr == cmp) {
413 ret = 1;
b184a261 414 result(llen, FAIL);
29f5540b 415 } else {
b184a261 416 result(llen, OK);
29f5540b
ZW		 417 }
418 return ret;
419}
420
fd3a9efd
ZW		 421#define EXPECT_PTRGE(cond, expr, cmp) \
422 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
423
424static int expect_ptrge(const void *expr, int llen, const void *cmp)
425{
426 int ret = !(expr >= cmp);
427
428 llen += printf(" = <%p> ", expr);
429 result(llen, ret ? FAIL : OK);
430 return ret;
431}
432
433#define EXPECT_PTRGT(cond, expr, cmp) \
434 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
435
436static int expect_ptrgt(const void *expr, int llen, const void *cmp)
437{
438 int ret = !(expr > cmp);
439
440 llen += printf(" = <%p> ", expr);
441 result(llen, ret ? FAIL : OK);
442 return ret;
443}
444
445
446#define EXPECT_PTRLE(cond, expr, cmp) \
447 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
448
449static int expect_ptrle(const void *expr, int llen, const void *cmp)
450{
451 int ret = !(expr <= cmp);
452
453 llen += printf(" = <%p> ", expr);
454 result(llen, ret ? FAIL : OK);
455 return ret;
456}
457
458
459#define EXPECT_PTRLT(cond, expr, cmp) \
460 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
461
462static int expect_ptrlt(const void *expr, int llen, const void *cmp)
463{
464 int ret = !(expr < cmp);
465
466 llen += printf(" = <%p> ", expr);
467 result(llen, ret ? FAIL : OK);
468 return ret;
469}
470
29f5540b 471#define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
b184a261 472 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
29f5540b
ZW		 473
474#define EXPECT_PTRER(cond, expr, expret, experr) \
475 EXPECT_PTRER2(cond, expr, expret, experr, 0)
476
477static int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
478{
479 int ret = 0;
480 int _errno = errno;
481
482 llen += printf(" = <%p> %s ", expr, errorname(_errno));
483 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
484 ret = 1;
485 if (experr2 == 0)
486 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
487 else
488 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
b184a261 489 result(llen, FAIL);
29f5540b 490 } else {
b184a261 491 result(llen, OK);
29f5540b
ZW		 492 }
493 return ret;
494}
362aecb2
WT		 495
496#define EXPECT_STRZR(cond, expr) \
b184a261 497 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
362aecb2
WT		 498
499static int expect_strzr(const char *expr, int llen)
500{
501 int ret = 0;
502
503 llen += printf(" = <%s> ", expr);
504 if (expr) {
505 ret = 1;
b184a261 506 result(llen, FAIL);
362aecb2 507 } else {
b184a261 508 result(llen, OK);
362aecb2
WT		 509 }
510 return ret;
511}
512
513
514#define EXPECT_STRNZ(cond, expr) \
b184a261 515 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
362aecb2
WT		 516
517static int expect_strnz(const char *expr, int llen)
518{
519 int ret = 0;
520
521 llen += printf(" = <%s> ", expr);
522 if (!expr) {
523 ret = 1;
b184a261 524 result(llen, FAIL);
362aecb2 525 } else {
b184a261 526 result(llen, OK);
362aecb2
WT		 527 }
528 return ret;
529}
530
531
532#define EXPECT_STREQ(cond, expr, cmp) \
b184a261 533 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
362aecb2
WT		 534
535static int expect_streq(const char *expr, int llen, const char *cmp)
536{
537 int ret = 0;
538
539 llen += printf(" = <%s> ", expr);
540 if (strcmp(expr, cmp) != 0) {
541 ret = 1;
b184a261 542 result(llen, FAIL);
362aecb2 543 } else {
b184a261 544 result(llen, OK);
362aecb2
WT		 545 }
546 return ret;
547}
548
549
550#define EXPECT_STRNE(cond, expr, cmp) \
b184a261 551 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
362aecb2
WT		 552
553static int expect_strne(const char *expr, int llen, const char *cmp)
554{
555 int ret = 0;
556
557 llen += printf(" = <%s> ", expr);
558 if (strcmp(expr, cmp) == 0) {
559 ret = 1;
b184a261 560 result(llen, FAIL);
362aecb2 561 } else {
b184a261 562 result(llen, OK);
362aecb2
WT		 563 }
564 return ret;
565}
566
23da7bc9 567
362aecb2
WT		 568/* declare tests based on line numbers. There must be exactly one test per line. */
569#define CASE_TEST(name) \
570 case __LINE__: llen += printf("%d %s", test, #name);
571
48967b73
ZW		 572int run_startup(int min, int max)
573{
574 int test;
575 int ret = 0;
576 /* kernel at least passes HOME and TERM, shell passes more */
577 int env_total = 2;
578 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
579 extern char end;
580 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
581 /* differ from nolibc, both glibc and musl have no global _auxv */
582 const unsigned long *test_auxv = (void *)-1;
583#ifdef NOLIBC
584 test_auxv = _auxv;
585#endif
586
587 for (test = min; test >= 0 && test <= max; test++) {
588 int llen = 0; /* line length */
589
590 /* avoid leaving empty lines below, this will insert holes into
591 * test numbers.
592 */
593 switch (test + __LINE__ + 1) {
594 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;
595 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
596 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
597 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
598 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
599 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
600 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
601 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
602 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
603 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
604 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
605 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
606 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
607 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
608 CASE_TEST(auxv_AT_PAGESZ); EXPECT_GE(1, getauxval(AT_PAGESZ), 4096); break;
609 case __LINE__:
610 return ret; /* must be last */
611 /* note: do not set any defaults so as to permit holes above */
612 }
613 }
614 return ret;
615}
616
362aecb2 617
b4844fa0
WT		 618/* used by some syscall tests below */
619int test_getdents64(const char *dir)
620{
621 char buffer[4096];
622 int fd, ret;
623 int err;
624
625 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
626 if (ret < 0)
627 return ret;
628
629 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
630 err = errno;
631 close(fd);
632
633 errno = err;
634 return ret;
635}
636
a290296a
AF		 637static int test_getpagesize(void)
638{
64077502 639 int x = getpagesize();
a290296a
AF		 640 int c;
641
642 if (x < 0)
643 return x;
644
645#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
646 /*
647 * x86 family is always 4K page.
648 */
649 c = (x == 4096);
650#elif defined(__aarch64__)
651 /*
652 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
653 * which are selected at kernel compilation time.
654 */
655 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
656#else
657 /*
658 * Assuming other architectures must have at least 4K page.
659 */
660 c = (x >= 4096);
661#endif
662
663 return !c;
664}
665
3ad09d72
TW		 666static int test_fork(void)
667{
668 int status;
ed495f09
ZW		 669 pid_t pid;
670
671 /* flush the printf buffer to avoid child flush it */
672 fflush(stdout);
673 fflush(stderr);
674
675 pid = fork();
3ad09d72
TW		 676
677 switch (pid) {
678 case -1:
679 return 1;
680
681 case 0:
682 exit(123);
683
684 default:
685 pid = waitpid(pid, &status, 0);
686
687 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
688 }
689}
690
87b9fa66
TW		 691static int test_stat_timestamps(void)
692{
693 struct stat st;
694
695 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
696 return 1;
697
f576d3c0 698 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
87b9fa66
TW		 699 return 1;
700
701 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
702 return 1;
703
704 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
705 return 1;
706
707 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
708 return 1;
709
710 return 0;
711}
712
fcdbf5dd
ZW		 713int test_mmap_munmap(void)
714{
715 int ret, fd, i;
716 void *mem;
717 size_t page_size, file_size, length;
718 off_t offset, pa_offset;
719 struct stat stat_buf;
720 const char * const files[] = {
721 "/dev/zero",
722 "/proc/1/exe", "/proc/self/exe",
723 argv0,
724 NULL
725 };
726
727 page_size = getpagesize();
728 if (page_size < 0)
e7d0129d 729 return 1;
fcdbf5dd
ZW		 730
731 /* find a right file to mmap, existed and accessible */
732 for (i = 0; files[i] != NULL; i++) {
733 ret = fd = open(files[i], O_RDONLY);
734 if (ret == -1)
735 continue;
736 else
737 break;
738 }
739 if (ret == -1)
e7d0129d 740 return 1;
fcdbf5dd
ZW		 741
742 ret = stat(files[i], &stat_buf);
743 if (ret == -1)
744 goto end;
745
746 /* file size of the special /dev/zero is 0, let's assign one manually */
747 if (i == 0)
748 file_size = 3*page_size;
749 else
750 file_size = stat_buf.st_size;
751
752 offset = file_size - 1;
753 if (offset < 0)
754 offset = 0;
755 length = file_size - offset;
756 pa_offset = offset & ~(page_size - 1);
757
758 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
759 if (mem == MAP_FAILED) {
e7d0129d 760 ret = 1;
fcdbf5dd
ZW		 761 goto end;
762 }
763
764 ret = munmap(mem, length + offset - pa_offset);
765
766end:
767 close(fd);
e7d0129d 768 return !!ret;
fcdbf5dd
ZW		 769}
770
5c01259b
YT		 771static int test_pipe(void)
772{
773 const char *const msg = "hello, nolibc";
774 int pipefd[2];
775 char buf[32];
776 size_t len;
777
778 if (pipe(pipefd) == -1)
779 return 1;
780
781 write(pipefd[1], msg, strlen(msg));
782 close(pipefd[1]);
783 len = read(pipefd[0], buf, sizeof(buf));
784 close(pipefd[0]);
785
786 if (len != strlen(msg))
787 return 1;
788
789 return !!memcmp(buf, msg, len);
790}
791
fcdbf5dd 792
b4844fa0
WT		 793/* Run syscall tests between IDs <min> and <max>.
794 * Return 0 on success, non-zero on failure.
795 */
796int run_syscall(int min, int max)
797{
957bfa31
ZW		 798 struct timeval tv;
799 struct timezone tz;
b4844fa0 800 struct stat stat_buf;
3e2d337b 801 int euid0;
7172f1c6 802 int proc;
b4844fa0
WT		 803 int test;
804 int tmp;
805 int ret = 0;
806 void *p1, *p2;
79b4f68e 807 int has_gettid = 1;
b4844fa0 808
7172f1c6
WT		 809 /* <proc> indicates whether or not /proc is mounted */
810 proc = stat("/proc", &stat_buf) == 0;
811
3e2d337b
WT		 812 /* this will be used to skip certain tests that can't be run unprivileged */
813 euid0 = geteuid() == 0;
814
79b4f68e
ZW		 815 /* from 2.30, glibc provides gettid() */
816#if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
817 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
818#endif
819
b4844fa0 820 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 821 int llen = 0; /* line length */
b4844fa0
WT		 822
823 /* avoid leaving empty lines below, this will insert holes into
824 * test numbers.
825 */
826 switch (test + __LINE__ + 1) {
827 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
828 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
79b4f68e 829 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
b4844fa0
WT		 830 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
831 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
832 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
833 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
834 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
f193ecbf 835 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break;
b4844fa0
WT		 836 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
837 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
38fc0a35 838 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
b4844fa0
WT		 839 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
840 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
148e9718 841 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
7172f1c6
WT		 842 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break;
843 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
844 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
3e2d337b 845 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
b4844fa0 846 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
135b622e 847 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
b4844fa0
WT		 848 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
849 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
850 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
851 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
852 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
853 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
854 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
855 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
856 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
3ad09d72 857 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
b4844fa0
WT		 858 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
859 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
957bfa31
ZW		 860 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
861 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
a290296a 862 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
b4844fa0
WT		 863 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
864 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
865 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
866 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
3e2d337b 867 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
f7a419e3 868 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
b4844fa0
WT		 869 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
870 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
871 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
d4a3b2b9 872 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
ba3d0892 873 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap((void *)1, 0), -1, EINVAL); break;
fcdbf5dd 874 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
b4844fa0
WT		 875 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
876 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
5c01259b 877 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
b4844fa0
WT		 878 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
879 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
880 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
208aa9d9 881 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
b4844fa0 882 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
4e14e844 883 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
b4844fa0
WT		 884 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
885 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
886 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;
887 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
888 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
46cf630c 889 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat((void *)1, &stat_buf), -1, EFAULT); break;
87b9fa66 890 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
b4844fa0
WT		 891 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
892 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
893 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
894 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
895 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
896 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
897 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
898 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
53fcfafa 899 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
ec8e1b73 900 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
b4844fa0
WT		 901 case __LINE__:
902 return ret; /* must be last */
903 /* note: do not set any defaults so as to permit holes above */
904 }
905 }
906 return ret;
907}
908
95bc9894
WT		 909int run_stdlib(int min, int max)
910{
911 int test;
912 int tmp;
913 int ret = 0;
914 void *p1, *p2;
915
916 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 917 int llen = 0; /* line length */
95bc9894
WT		 918
919 /* avoid leaving empty lines below, this will insert holes into
920 * test numbers.
921 */
922 switch (test + __LINE__ + 1) {
923 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
924 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
925 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
926 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
927 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
928 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
929 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
930 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
931 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
932 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
933 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
934 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
c80b5a0a
WT		 935 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
936 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
937 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
938 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
939 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
940 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
941 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
d1209597
VD		 942 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
943 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
944 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
945 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
946 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
947 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
948 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
949 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
950 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
951 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
952 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
953 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
954 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
955 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
956 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
957 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
958 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
959 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
960 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
961 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
962 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
963 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
964 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
965 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
966 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
967 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
968 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
989abf1c
ZW		 969 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
970 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
d1209597 971 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
989abf1c
ZW		 972 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
973 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
d1209597 974 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
f9bf5944
TW		 975 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
976 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
977 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
ceb528fe
TW		 978 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
979 CASE_TEST(limit_intptr_min_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break;
980 CASE_TEST(limit_intptr_max_64); EXPECT_EQ(sizeof(long) == 8, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break;
981 CASE_TEST(limit_uintptr_max_64); EXPECT_EQ(sizeof(long) == 8, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break;
982 CASE_TEST(limit_ptrdiff_min_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break;
983 CASE_TEST(limit_ptrdiff_max_64); EXPECT_EQ(sizeof(long) == 8, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break;
984 CASE_TEST(limit_size_max_64); EXPECT_EQ(sizeof(long) == 8, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break;
985 CASE_TEST(limit_intptr_min_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MIN, (intptr_t) 0x80000000); break;
986 CASE_TEST(limit_intptr_max_32); EXPECT_EQ(sizeof(long) == 4, INTPTR_MAX, (intptr_t) 0x7fffffff); break;
987 CASE_TEST(limit_uintptr_max_32); EXPECT_EQ(sizeof(long) == 4, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break;
988 CASE_TEST(limit_ptrdiff_min_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break;
989 CASE_TEST(limit_ptrdiff_max_32); EXPECT_EQ(sizeof(long) == 4, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break;
990 CASE_TEST(limit_size_max_32); EXPECT_EQ(sizeof(long) == 4, SIZE_MAX, (size_t) 0xffffffffU); break;
95bc9894
WT		 991 case __LINE__:
992 return ret; /* must be last */
993 /* note: do not set any defaults so as to permit holes above */
994 }
995 }
996 return ret;
997}
998
69f2cd9f
TW		 999#define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1000 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1001
1002static int expect_vfprintf(int llen, size_t c, const char *expected, const char *fmt, ...)
1003{
1004 int ret, fd, w, r;
1005 char buf[100];
1006 FILE *memfile;
1007 va_list args;
1008
6861b1a3 1009 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);
69f2cd9f 1010 if (fd == -1) {
b184a261 1011 result(llen, SKIPPED);
6861b1a3 1012 return 0;
69f2cd9f
TW		 1013 }
1014
1015 memfile = fdopen(fd, "w+");
1016 if (!memfile) {
b184a261 1017 result(llen, FAIL);
69f2cd9f
TW		 1018 return 1;
1019 }
1020
1021 va_start(args, fmt);
1022 w = vfprintf(memfile, fmt, args);
1023 va_end(args);
1024
1025 if (w != c) {
1026 llen += printf(" written(%d) != %d", w, (int) c);
b184a261 1027 result(llen, FAIL);
69f2cd9f
TW		 1028 return 1;
1029 }
1030
1031 fflush(memfile);
1032 lseek(fd, 0, SEEK_SET);
1033
1034 r = read(fd, buf, sizeof(buf) - 1);
1035 buf[r] = '\0';
1036
1037 fclose(memfile);
1038
1039 if (r != w) {
1040 llen += printf(" written(%d) != read(%d)", w, r);
b184a261 1041 result(llen, FAIL);
69f2cd9f
TW		 1042 return 1;
1043 }
1044
1045 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1046 ret = strncmp(expected, buf, c);
1047
b184a261 1048 result(llen, ret ? FAIL : OK);
69f2cd9f
TW		 1049 return ret;
1050}
1051
1052static int run_vfprintf(int min, int max)
1053{
1054 int test;
1055 int tmp;
1056 int ret = 0;
1057 void *p1, *p2;
1058
1059 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 1060 int llen = 0; /* line length */
69f2cd9f
TW		 1061
1062 /* avoid leaving empty lines below, this will insert holes into
1063 * test numbers.
1064 */
1065 switch (test + __LINE__ + 1) {
1066 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1067 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1068 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1069 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1070 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1071 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1072 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1073 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1074 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1075 case __LINE__:
1076 return ret; /* must be last */
1077 /* note: do not set any defaults so as to permit holes above */
1078 }
1079 }
1080 return ret;
1081}
1082
97357168
TW		 1083static int smash_stack(void)
1084{
1085 char buf[100];
e7654c3f 1086 volatile char *ptr = buf;
aa662d12 1087 size_t i;
97357168 1088
aa662d12 1089 for (i = 0; i < 200; i++)
e7654c3f 1090 ptr[i] = 'P';
97357168
TW		 1091
1092 return 1;
1093}
1094
1095static int run_protection(int min, int max)
1096{
1097 pid_t pid;
1098 int llen = 0, status;
1099
1100 llen += printf("0 -fstackprotector ");
1101
818924d1 1102#if !defined(_NOLIBC_STACKPROTECTOR)
97357168 1103 llen += printf("not supported");
b184a261 1104 result(llen, SKIPPED);
97357168
TW		 1105 return 0;
1106#endif
1107
818924d1 1108#if defined(_NOLIBC_STACKPROTECTOR)
85250921
TW		 1109 if (!__stack_chk_guard) {
1110 llen += printf("__stack_chk_guard not initialized");
b184a261 1111 result(llen, FAIL);
85250921
TW		 1112 return 1;
1113 }
1114#endif
1115
97357168
TW		 1116 pid = -1;
1117 pid = fork();
1118
1119 switch (pid) {
1120 case -1:
1121 llen += printf("fork()");
b184a261 1122 result(llen, FAIL);
97357168
TW		 1123 return 1;
1124
1125 case 0:
1126 close(STDOUT_FILENO);
1127 close(STDERR_FILENO);
1128
9a75575b 1129 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
97357168
TW		 1130 smash_stack();
1131 return 1;
1132
1133 default:
1134 pid = waitpid(pid, &status, 0);
1135
1136 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1137 llen += printf("waitpid()");
b184a261 1138 result(llen, FAIL);
97357168
TW		 1139 return 1;
1140 }
b184a261 1141 result(llen, OK);
97357168
TW		 1142 return 0;
1143 }
1144}
1145
1a5454f6
WT		 1146/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
1147int prepare(void)
1148{
1149 struct stat stat_buf;
1150
1151 /* It's possible that /dev doesn't even exist or was not mounted, so
1152 * we'll try to create it, mount it, or create minimal entries into it.
1153 * We want at least /dev/null and /dev/console.
1154 */
1155 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1156 if (stat("/dev/console", &stat_buf) != 0 ||
82e339c2
ZW		 1157 stat("/dev/null", &stat_buf) != 0 ||
1158 stat("/dev/zero", &stat_buf) != 0) {
1a5454f6
WT		 1159 /* try devtmpfs first, otherwise fall back to manual creation */
1160 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1161 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1162 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
82e339c2 1163 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1a5454f6
WT		 1164 }
1165 }
1166 }
1167
1168 /* If no /dev/console was found before calling init, stdio is closed so
1169 * we need to reopen it from /dev/console. If it failed above, it will
1170 * still fail here and we cannot emit a message anyway.
1171 */
1172 if (close(dup(1)) == -1) {
1173 int fd = open("/dev/console", O_RDWR);
1174
1175 if (fd >= 0) {
1176 if (fd != 0)
1177 dup2(fd, 0);
1178 if (fd != 1)
1179 dup2(fd, 1);
1180 if (fd != 2)
1181 dup2(fd, 2);
1182 if (fd > 2)
1183 close(fd);
1184 puts("\nSuccessfully reopened /dev/console.");
1185 }
1186 }
1187
1188 /* try to mount /proc if not mounted. Silently fail otherwise */
1189 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
b8b26108
ZW		 1190 if (stat("/proc/self", &stat_buf) != 0) {
1191 /* If not mountable, remove /proc completely to avoid misuse */
1192 if (mount("none", "/proc", "proc", 0, 0) != 0)
1193 rmdir("/proc");
1194 }
1a5454f6
WT		 1195 }
1196
bbb14546
ZW		 1197 /* some tests rely on a writable /tmp */
1198 mkdir("/tmp", 0755);
1199
1a5454f6
WT		 1200 return 0;
1201}
b4844fa0 1202
23da7bc9 1203/* This is the definition of known test names, with their functions */
c4560bd8 1204static const struct test test_names[] = {
23da7bc9 1205 /* add new tests here */
48967b73 1206 { .name = "startup", .func = run_startup },
97357168
TW		 1207 { .name = "syscall", .func = run_syscall },
1208 { .name = "stdlib", .func = run_stdlib },
69f2cd9f 1209 { .name = "vfprintf", .func = run_vfprintf },
97357168 1210 { .name = "protection", .func = run_protection },
23da7bc9
WT		 1211 { 0 }
1212};
1213
c388c992
ZW		 1214int is_setting_valid(char *test)
1215{
1216 int idx, len, test_len, valid = 0;
1217 char delimiter;
1218
1219 if (!test)
1220 return valid;
1221
1222 test_len = strlen(test);
1223
1224 for (idx = 0; test_names[idx].name; idx++) {
1225 len = strlen(test_names[idx].name);
1226 if (test_len < len)
1227 continue;
1228
1229 if (strncmp(test, test_names[idx].name, len) != 0)
1230 continue;
1231
1232 delimiter = test[len];
1233 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1234 continue;
1235
1236 valid = 1;
1237 break;
1238 }
1239
1240 return valid;
1241}
1242
362aecb2
WT		 1243int main(int argc, char **argv, char **envp)
1244{
1245 int min = 0;
a36cfc5e 1246 int max = INT_MAX;
362aecb2 1247 int ret = 0;
23da7bc9
WT		 1248 int err;
1249 int idx;
1250 char *test;
362aecb2 1251
938b5b98 1252 argv0 = argv[0];
48967b73
ZW		 1253 test_argc = argc;
1254 test_argv = argv;
67d108e2 1255 test_envp = envp;
362aecb2 1256
1a5454f6
WT		 1257 /* when called as init, it's possible that no console was opened, for
1258 * example if no /dev file system was provided. We'll check that fd#1
1259 * was opened, and if not we'll attempt to create and open /dev/console
1260 * and /dev/null that we'll use for later tests.
1261 */
1262 if (getpid() == 1)
1263 prepare();
1264
23da7bc9
WT		 1265 /* the definition of a series of tests comes from either argv[1] or the
1266 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1267 * series of test names and optional ranges:
1268 * syscall:5-15[:.*],stdlib:8-10
1269 */
1270 test = argv[1];
c388c992 1271 if (!is_setting_valid(test))
23da7bc9
WT		 1272 test = getenv("NOLIBC_TEST");
1273
c388c992 1274 if (is_setting_valid(test)) {
23da7bc9
WT		 1275 char *comma, *colon, *dash, *value;
1276
1277 do {
1278 comma = strchr(test, ',');
1279 if (comma)
1280 *(comma++) = '\0';
1281
1282 colon = strchr(test, ':');
1283 if (colon)
1284 *(colon++) = '\0';
1285
1286 for (idx = 0; test_names[idx].name; idx++) {
1287 if (strcmp(test, test_names[idx].name) == 0)
1288 break;
1289 }
1290
1291 if (test_names[idx].name) {
1292 /* The test was named, it will be called at least
1293 * once. We may have an optional range at <colon>
1294 * here, which defaults to the full range.
1295 */
1296 do {
a36cfc5e 1297 min = 0; max = INT_MAX;
23da7bc9
WT		 1298 value = colon;
1299 if (value && *value) {
1300 colon = strchr(value, ':');
1301 if (colon)
1302 *(colon++) = '\0';
1303
1304 dash = strchr(value, '-');
1305 if (dash)
1306 *(dash++) = '\0';
1307
1308 /* support :val: :min-max: :min-: :-max: */
1309 if (*value)
1310 min = atoi(value);
1311 if (!dash)
1312 max = min;
1313 else if (*dash)
1314 max = atoi(dash);
1315
1316 value = colon;
1317 }
1318
1319 /* now's time to call the test */
1320 printf("Running test '%s'\n", test_names[idx].name);
1321 err = test_names[idx].func(min, max);
1322 ret += err;
1323 printf("Errors during this test: %d\n\n", err);
1324 } while (colon && *colon);
1325 } else
1326 printf("Ignoring unknown test name '%s'\n", test);
1327
1328 test = comma;
1329 } while (test && *test);
1330 } else {
1331 /* no test mentioned, run everything */
1332 for (idx = 0; test_names[idx].name; idx++) {
1333 printf("Running test '%s'\n", test_names[idx].name);
1334 err = test_names[idx].func(min, max);
1335 ret += err;
1336 printf("Errors during this test: %d\n\n", err);
1337 }
1338 }
1339
362aecb2 1340 printf("Total number of errors: %d\n", ret);
f49896d7
WT		 1341
1342 if (getpid() == 1) {
1343 /* we're running as init, there's no other process on the
1344 * system, thus likely started from a VM for a quick check.
1345 * Exiting will provoke a kernel panic that may be reported
1346 * as an error by Qemu or the hypervisor, while stopping
1347 * cleanly will often be reported as a success. This allows
1348 * to use the output of this program for bisecting kernels.
1349 */
1350 printf("Leaving init with final status: %d\n", !!ret);
1351 if (ret == 0)
950add28 1352 reboot(RB_POWER_OFF);
aa73a86c
WT		 1353#if defined(__x86_64__)
1354 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1355 * exit with status code 2N+1 when N is written to 0x501. We
1356 * hard-code the syscall here as it's arch-dependent.
1357 */
67eb617a 1358 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
7f291cfa 1359 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
aa73a86c
WT		 1360 /* if it does nothing, fall back to the regular panic */
1361#endif
f49896d7
WT		 1362 }
1363
362aecb2
WT		 1364 printf("Exiting with status %d\n", !!ret);
1365 return !!ret;
1366}
Linux 6.x block layer and io_uring tree(s)