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