projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
selftests/nolibc: allow specify extra arguments for qemu
[linux-block.git] / tools / testing / selftests / nolibc / nolibc-test.c
CommitLineData
fddc8f81 1/* SPDX-License-Identifier: GPL-2.0 */
362aecb2 2
1da02f51
WT		 3#define _GNU_SOURCE
4
362aecb2
WT		 5/* platform-specific include files coming from the compiler */
6#include <limits.h>
7
8/* libc-specific include files
1da02f51 9 * The program may be built in 3 ways:
362aecb2 10 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
1da02f51
WT		 11 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
12 * $(CC) with default libc => NOLIBC* never defined
362aecb2
WT		 13 */
14#ifndef NOLIBC
15#include <stdio.h>
16#include <stdlib.h>
17#include <string.h>
1da02f51
WT		 18#ifndef _NOLIBC_STDIO_H
19/* standard libcs need more includes */
20#include <linux/reboot.h>
21#include <sys/io.h>
22#include <sys/ioctl.h>
69f2cd9f 23#include <sys/mman.h>
1da02f51 24#include <sys/mount.h>
208aa9d9 25#include <sys/prctl.h>
1da02f51
WT		 26#include <sys/reboot.h>
27#include <sys/stat.h>
28#include <sys/syscall.h>
29#include <sys/sysmacros.h>
30#include <sys/time.h>
31#include <sys/wait.h>
32#include <dirent.h>
33#include <errno.h>
34#include <fcntl.h>
35#include <poll.h>
36#include <sched.h>
37#include <signal.h>
38#include <stdarg.h>
2df07fc5
WT		 39#include <stddef.h>
40#include <stdint.h>
1da02f51
WT		 41#include <unistd.h>
42#endif
362aecb2
WT		 43#endif
44
45/* will be used by nolibc by getenv() */
46char **environ;
47
23da7bc9
WT		 48/* definition of a series of tests */
49struct test {
fddc8f81
TW		 50 const char *name; /* test name */
51 int (*func)(int min, int max); /* handler */
23da7bc9
WT		 52};
53
1da02f51
WT		 54#ifndef _NOLIBC_STDLIB_H
55char *itoa(int i)
56{
57 static char buf[12];
58 int ret;
59
60 ret = snprintf(buf, sizeof(buf), "%d", i);
61 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
62}
63#endif
64
362aecb2
WT		 65#define CASE_ERR(err) \
66 case err: return #err
67
68/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
69 * or the decimal value for less common ones.
70 */
71const char *errorname(int err)
72{
73 switch (err) {
74 case 0: return "SUCCESS";
75 CASE_ERR(EPERM);
76 CASE_ERR(ENOENT);
77 CASE_ERR(ESRCH);
78 CASE_ERR(EINTR);
79 CASE_ERR(EIO);
80 CASE_ERR(ENXIO);
81 CASE_ERR(E2BIG);
82 CASE_ERR(ENOEXEC);
83 CASE_ERR(EBADF);
84 CASE_ERR(ECHILD);
85 CASE_ERR(EAGAIN);
86 CASE_ERR(ENOMEM);
87 CASE_ERR(EACCES);
88 CASE_ERR(EFAULT);
89 CASE_ERR(ENOTBLK);
90 CASE_ERR(EBUSY);
91 CASE_ERR(EEXIST);
92 CASE_ERR(EXDEV);
93 CASE_ERR(ENODEV);
94 CASE_ERR(ENOTDIR);
95 CASE_ERR(EISDIR);
96 CASE_ERR(EINVAL);
97 CASE_ERR(ENFILE);
98 CASE_ERR(EMFILE);
99 CASE_ERR(ENOTTY);
100 CASE_ERR(ETXTBSY);
101 CASE_ERR(EFBIG);
102 CASE_ERR(ENOSPC);
103 CASE_ERR(ESPIPE);
104 CASE_ERR(EROFS);
105 CASE_ERR(EMLINK);
106 CASE_ERR(EPIPE);
107 CASE_ERR(EDOM);
108 CASE_ERR(ERANGE);
109 CASE_ERR(ENOSYS);
758f970f 110 CASE_ERR(EOVERFLOW);
362aecb2
WT		 111 default:
112 return itoa(err);
113 }
114}
115
443de903
TW		 116static void putcharn(char c, size_t n)
117{
118 char buf[64];
119
120 memset(buf, c, n);
121 buf[n] = '\0';
122 fputs(buf, stdout);
123}
124
362aecb2
WT		 125static int pad_spc(int llen, int cnt, const char *fmt, ...)
126{
127 va_list args;
362aecb2
WT		 128 int ret;
129
443de903 130 putcharn(' ', cnt - llen);
362aecb2
WT		 131
132 va_start(args, fmt);
133 ret = vfprintf(stdout, fmt, args);
134 va_end(args);
443de903 135 return ret < 0 ? ret : ret + cnt - llen;
362aecb2
WT		 136}
137
138/* The tests below are intended to be used by the macroes, which evaluate
139 * expression <expr>, print the status to stdout, and update the "ret"
140 * variable to count failures. The functions themselves return the number
141 * of failures, thus either 0 or 1.
142 */
143
144#define EXPECT_ZR(cond, expr) \
a0994fb9 145 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
362aecb2
WT		 146
147static int expect_zr(int expr, int llen)
148{
149 int ret = !(expr == 0);
150
151 llen += printf(" = %d ", expr);
a0994fb9 152 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 153 return ret;
154}
155
156
157#define EXPECT_NZ(cond, expr, val) \
a0994fb9 158 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_nz(expr, llen; } while (0)
362aecb2
WT		 159
160static int expect_nz(int expr, int llen)
161{
162 int ret = !(expr != 0);
163
164 llen += printf(" = %d ", expr);
a0994fb9 165 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 166 return ret;
167}
168
169
170#define EXPECT_EQ(cond, expr, val) \
a0994fb9 171 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_eq(expr, llen, val); } while (0)
362aecb2 172
a0994fb9 173static int expect_eq(uint64_t expr, int llen, uint64_t val)
362aecb2
WT		 174{
175 int ret = !(expr == val);
176
a0994fb9
VD		 177 llen += printf(" = %lld ", expr);
178 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 179 return ret;
180}
181
182
183#define EXPECT_NE(cond, expr, val) \
a0994fb9 184 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ne(expr, llen, val); } while (0)
362aecb2
WT		 185
186static int expect_ne(int expr, int llen, int val)
187{
188 int ret = !(expr != val);
189
190 llen += printf(" = %d ", expr);
a0994fb9 191 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 192 return ret;
193}
194
195
196#define EXPECT_GE(cond, expr, val) \
a0994fb9 197 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ge(expr, llen, val); } while (0)
362aecb2
WT		 198
199static int expect_ge(int expr, int llen, int val)
200{
201 int ret = !(expr >= val);
202
203 llen += printf(" = %d ", expr);
a0994fb9 204 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 205 return ret;
206}
207
208
209#define EXPECT_GT(cond, expr, val) \
a0994fb9 210 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_gt(expr, llen, val); } while (0)
362aecb2
WT		 211
212static int expect_gt(int expr, int llen, int val)
213{
214 int ret = !(expr > val);
215
216 llen += printf(" = %d ", expr);
a0994fb9 217 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 218 return ret;
219}
220
221
222#define EXPECT_LE(cond, expr, val) \
a0994fb9 223 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_le(expr, llen, val); } while (0)
362aecb2
WT		 224
225static int expect_le(int expr, int llen, int val)
226{
227 int ret = !(expr <= val);
228
229 llen += printf(" = %d ", expr);
a0994fb9 230 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 231 return ret;
232}
233
234
235#define EXPECT_LT(cond, expr, val) \
a0994fb9 236 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_lt(expr, llen, val); } while (0)
362aecb2
WT		 237
238static int expect_lt(int expr, int llen, int val)
239{
240 int ret = !(expr < val);
241
242 llen += printf(" = %d ", expr);
a0994fb9 243 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 244 return ret;
245}
246
247
248#define EXPECT_SYSZR(cond, expr) \
a0994fb9 249 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
362aecb2
WT		 250
251static int expect_syszr(int expr, int llen)
252{
253 int ret = 0;
254
255 if (expr) {
256 ret = 1;
257 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 258 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 259 } else {
260 llen += printf(" = %d ", expr);
a0994fb9 261 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 262 }
263 return ret;
264}
265
266
267#define EXPECT_SYSEQ(cond, expr, val) \
a0994fb9 268 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syseq(expr, llen, val); } while (0)
362aecb2
WT		 269
270static int expect_syseq(int expr, int llen, int val)
271{
272 int ret = 0;
273
274 if (expr != val) {
275 ret = 1;
276 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 277 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 278 } else {
279 llen += printf(" = %d ", expr);
a0994fb9 280 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 281 }
282 return ret;
283}
284
285
286#define EXPECT_SYSNE(cond, expr, val) \
a0994fb9 287 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_sysne(expr, llen, val); } while (0)
362aecb2
WT		 288
289static int expect_sysne(int expr, int llen, int val)
290{
291 int ret = 0;
292
293 if (expr == val) {
294 ret = 1;
295 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 296 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 297 } else {
298 llen += printf(" = %d ", expr);
a0994fb9 299 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 300 }
301 return ret;
302}
303
304
305#define EXPECT_SYSER(cond, expr, expret, experr) \
a0994fb9 306 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
362aecb2
WT		 307
308static int expect_syserr(int expr, int expret, int experr, int llen)
309{
310 int ret = 0;
311 int _errno = errno;
312
313 llen += printf(" = %d %s ", expr, errorname(_errno));
314 if (expr != expret || _errno != experr) {
315 ret = 1;
316 llen += printf(" != (%d %s) ", expret, errorname(experr));
a0994fb9 317 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 318 } else {
a0994fb9 319 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 320 }
321 return ret;
322}
323
324
325#define EXPECT_PTRZR(cond, expr) \
a0994fb9 326 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
362aecb2
WT		 327
328static int expect_ptrzr(const void *expr, int llen)
329{
330 int ret = 0;
331
332 llen += printf(" = <%p> ", expr);
333 if (expr) {
334 ret = 1;
a0994fb9 335 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 336 } else {
a0994fb9 337 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 338 }
339 return ret;
340}
341
342
343#define EXPECT_PTRNZ(cond, expr) \
a0994fb9 344 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
362aecb2
WT		 345
346static int expect_ptrnz(const void *expr, int llen)
347{
348 int ret = 0;
349
350 llen += printf(" = <%p> ", expr);
351 if (!expr) {
352 ret = 1;
a0994fb9 353 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 354 } else {
a0994fb9 355 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 356 }
357 return ret;
358}
359
360
361#define EXPECT_STRZR(cond, expr) \
a0994fb9 362 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
362aecb2
WT		 363
364static int expect_strzr(const char *expr, int llen)
365{
366 int ret = 0;
367
368 llen += printf(" = <%s> ", expr);
369 if (expr) {
370 ret = 1;
a0994fb9 371 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 372 } else {
a0994fb9 373 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 374 }
375 return ret;
376}
377
378
379#define EXPECT_STRNZ(cond, expr) \
a0994fb9 380 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
362aecb2
WT		 381
382static int expect_strnz(const char *expr, int llen)
383{
384 int ret = 0;
385
386 llen += printf(" = <%s> ", expr);
387 if (!expr) {
388 ret = 1;
a0994fb9 389 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 390 } else {
a0994fb9 391 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 392 }
393 return ret;
394}
395
396
397#define EXPECT_STREQ(cond, expr, cmp) \
a0994fb9 398 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_streq(expr, llen, cmp); } while (0)
362aecb2
WT		 399
400static int expect_streq(const char *expr, int llen, const char *cmp)
401{
402 int ret = 0;
403
404 llen += printf(" = <%s> ", expr);
405 if (strcmp(expr, cmp) != 0) {
406 ret = 1;
a0994fb9 407 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 408 } else {
a0994fb9 409 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 410 }
411 return ret;
412}
413
414
415#define EXPECT_STRNE(cond, expr, cmp) \
a0994fb9 416 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strne(expr, llen, cmp); } while (0)
362aecb2
WT		 417
418static int expect_strne(const char *expr, int llen, const char *cmp)
419{
420 int ret = 0;
421
422 llen += printf(" = <%s> ", expr);
423 if (strcmp(expr, cmp) == 0) {
424 ret = 1;
a0994fb9 425 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 426 } else {
a0994fb9 427 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 428 }
429 return ret;
430}
431
23da7bc9 432
362aecb2
WT		 433/* declare tests based on line numbers. There must be exactly one test per line. */
434#define CASE_TEST(name) \
435 case __LINE__: llen += printf("%d %s", test, #name);
436
437
b4844fa0
WT		 438/* used by some syscall tests below */
439int test_getdents64(const char *dir)
440{
441 char buffer[4096];
442 int fd, ret;
443 int err;
444
445 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
446 if (ret < 0)
447 return ret;
448
449 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
450 err = errno;
451 close(fd);
452
453 errno = err;
454 return ret;
455}
456
a290296a
AF		 457static int test_getpagesize(void)
458{
459 long x = getpagesize();
460 int c;
461
462 if (x < 0)
463 return x;
464
465#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
466 /*
467 * x86 family is always 4K page.
468 */
469 c = (x == 4096);
470#elif defined(__aarch64__)
471 /*
472 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
473 * which are selected at kernel compilation time.
474 */
475 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
476#else
477 /*
478 * Assuming other architectures must have at least 4K page.
479 */
480 c = (x >= 4096);
481#endif
482
483 return !c;
484}
485
3ad09d72
TW		 486static int test_fork(void)
487{
488 int status;
ed495f09
ZW		 489 pid_t pid;
490
491 /* flush the printf buffer to avoid child flush it */
492 fflush(stdout);
493 fflush(stderr);
494
495 pid = fork();
3ad09d72
TW		 496
497 switch (pid) {
498 case -1:
499 return 1;
500
501 case 0:
502 exit(123);
503
504 default:
505 pid = waitpid(pid, &status, 0);
506
507 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
508 }
509}
510
87b9fa66
TW		 511static int test_stat_timestamps(void)
512{
513 struct stat st;
514
515 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
516 return 1;
517
518 if (stat("/proc/self/", &st))
519 return 1;
520
521 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
522 return 1;
523
524 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
525 return 1;
526
527 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
528 return 1;
529
530 return 0;
531}
532
b4844fa0
WT		 533/* Run syscall tests between IDs <min> and <max>.
534 * Return 0 on success, non-zero on failure.
535 */
536int run_syscall(int min, int max)
537{
538 struct stat stat_buf;
3e2d337b 539 int euid0;
7172f1c6 540 int proc;
b4844fa0
WT		 541 int test;
542 int tmp;
543 int ret = 0;
544 void *p1, *p2;
545
7172f1c6
WT		 546 /* <proc> indicates whether or not /proc is mounted */
547 proc = stat("/proc", &stat_buf) == 0;
548
3e2d337b
WT		 549 /* this will be used to skip certain tests that can't be run unprivileged */
550 euid0 = geteuid() == 0;
551
b4844fa0 552 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 553 int llen = 0; /* line length */
b4844fa0
WT		 554
555 /* avoid leaving empty lines below, this will insert holes into
556 * test numbers.
557 */
558 switch (test + __LINE__ + 1) {
559 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
560 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1da02f51 561#ifdef NOLIBC
b4844fa0 562 CASE_TEST(gettid); EXPECT_SYSNE(1, gettid(), -1); break;
1da02f51 563#endif
b4844fa0
WT		 564 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
565 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
566 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
567 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
568 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
569 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
570 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
571 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); break;
572 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
573 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
7172f1c6
WT		 574 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break;
575 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
576 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
3e2d337b 577 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
b4844fa0 578 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
7172f1c6 579 CASE_TEST(chroot_exe); EXPECT_SYSER(proc, chroot("/proc/self/exe"), -1, ENOTDIR); break;
b4844fa0
WT		 580 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
581 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
582 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
583 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
584 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
585 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
586 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
587 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
588 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
3ad09d72 589 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
b4844fa0
WT		 590 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
591 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
1da02f51 592#ifdef NOLIBC
b4844fa0
WT		 593 CASE_TEST(gettimeofday_bad1); EXPECT_SYSER(1, gettimeofday((void *)1, NULL), -1, EFAULT); break;
594 CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
1da02f51 595#endif
a290296a 596 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
b4844fa0
WT		 597 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
598 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
599 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
600 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
3e2d337b 601 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
7172f1c6 602 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/net", "/blah"), -1, EXDEV); break;
b4844fa0
WT		 603 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
604 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
605 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
606 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
607 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
608 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
609 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
610 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
208aa9d9 611 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
b4844fa0
WT		 612 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
613 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
614 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
615 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;
616 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
617 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
618 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
87b9fa66 619 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
b4844fa0
WT		 620 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
621 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
622 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
623 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
624 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
625 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
626 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
627 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
53fcfafa 628 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
ec8e1b73 629 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
b4844fa0
WT		 630 case __LINE__:
631 return ret; /* must be last */
632 /* note: do not set any defaults so as to permit holes above */
633 }
634 }
635 return ret;
636}
637
95bc9894
WT		 638int run_stdlib(int min, int max)
639{
640 int test;
641 int tmp;
642 int ret = 0;
643 void *p1, *p2;
644
645 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 646 int llen = 0; /* line length */
95bc9894
WT		 647
648 /* avoid leaving empty lines below, this will insert holes into
649 * test numbers.
650 */
651 switch (test + __LINE__ + 1) {
652 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
653 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
654 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
655 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
656 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
657 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
658 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
659 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
660 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
661 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
662 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
663 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
c80b5a0a
WT		 664 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
665 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
666 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
667 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
668 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
669 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
670 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
d1209597
VD		 671 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
672 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
673 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
674 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
675 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
676 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
677 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
678 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
679 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
680 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
681 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
682 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
683 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
684 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
685 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
686 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
687 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
688 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
689 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
690 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
691 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
692 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
693 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
694 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
695 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
696 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
697 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
698 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) INTPTR_MIN); break;
699 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) INTPTR_MAX); break;
700 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
701 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) INTPTR_MIN); break;
702 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) INTPTR_MAX); break;
703 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
f9bf5944
TW		 704 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
705 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
706 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
d1209597
VD		 707#if __SIZEOF_LONG__ == 8
708 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break;
709 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break;
710 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break;
711 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break;
712 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break;
713 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break;
714#elif __SIZEOF_LONG__ == 4
715 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x80000000); break;
716 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffff); break;
717 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break;
718 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break;
719 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break;
720 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffU); break;
721#else
722# warning "__SIZEOF_LONG__ is undefined"
723#endif /* __SIZEOF_LONG__ */
95bc9894
WT		 724 case __LINE__:
725 return ret; /* must be last */
726 /* note: do not set any defaults so as to permit holes above */
727 }
728 }
729 return ret;
730}
731
69f2cd9f
TW		 732#define EXPECT_VFPRINTF(c, expected, fmt, ...) \
733 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
734
735static int expect_vfprintf(int llen, size_t c, const char *expected, const char *fmt, ...)
736{
737 int ret, fd, w, r;
738 char buf[100];
739 FILE *memfile;
740 va_list args;
741
742 fd = memfd_create("vfprintf", 0);
743 if (fd == -1) {
744 pad_spc(llen, 64, "[FAIL]\n");
745 return 1;
746 }
747
748 memfile = fdopen(fd, "w+");
749 if (!memfile) {
750 pad_spc(llen, 64, "[FAIL]\n");
751 return 1;
752 }
753
754 va_start(args, fmt);
755 w = vfprintf(memfile, fmt, args);
756 va_end(args);
757
758 if (w != c) {
759 llen += printf(" written(%d) != %d", w, (int) c);
760 pad_spc(llen, 64, "[FAIL]\n");
761 return 1;
762 }
763
764 fflush(memfile);
765 lseek(fd, 0, SEEK_SET);
766
767 r = read(fd, buf, sizeof(buf) - 1);
768 buf[r] = '\0';
769
770 fclose(memfile);
771
772 if (r != w) {
773 llen += printf(" written(%d) != read(%d)", w, r);
774 pad_spc(llen, 64, "[FAIL]\n");
775 return 1;
776 }
777
778 llen += printf(" \"%s\" = \"%s\"", expected, buf);
779 ret = strncmp(expected, buf, c);
780
781 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
782 return ret;
783}
784
785static int run_vfprintf(int min, int max)
786{
787 int test;
788 int tmp;
789 int ret = 0;
790 void *p1, *p2;
791
792 for (test = min; test >= 0 && test <= max; test++) {
fddc8f81 793 int llen = 0; /* line length */
69f2cd9f
TW		 794
795 /* avoid leaving empty lines below, this will insert holes into
796 * test numbers.
797 */
798 switch (test + __LINE__ + 1) {
799 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
800 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
801 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
802 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
803 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
804 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
805 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
806 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
807 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
808 case __LINE__:
809 return ret; /* must be last */
810 /* note: do not set any defaults so as to permit holes above */
811 }
812 }
813 return ret;
814}
815
97357168
TW		 816static int smash_stack(void)
817{
818 char buf[100];
e7654c3f 819 volatile char *ptr = buf;
aa662d12 820 size_t i;
97357168 821
aa662d12 822 for (i = 0; i < 200; i++)
e7654c3f 823 ptr[i] = 'P';
97357168
TW		 824
825 return 1;
826}
827
828static int run_protection(int min, int max)
829{
830 pid_t pid;
831 int llen = 0, status;
832
833 llen += printf("0 -fstackprotector ");
834
818924d1 835#if !defined(_NOLIBC_STACKPROTECTOR)
97357168
TW		 836 llen += printf("not supported");
837 pad_spc(llen, 64, "[SKIPPED]\n");
838 return 0;
839#endif
840
818924d1 841#if defined(_NOLIBC_STACKPROTECTOR)
85250921
TW		 842 if (!__stack_chk_guard) {
843 llen += printf("__stack_chk_guard not initialized");
844 pad_spc(llen, 64, "[FAIL]\n");
845 return 1;
846 }
847#endif
848
97357168
TW		 849 pid = -1;
850 pid = fork();
851
852 switch (pid) {
853 case -1:
854 llen += printf("fork()");
855 pad_spc(llen, 64, "[FAIL]\n");
856 return 1;
857
858 case 0:
859 close(STDOUT_FILENO);
860 close(STDERR_FILENO);
861
9a75575b 862 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
97357168
TW		 863 smash_stack();
864 return 1;
865
866 default:
867 pid = waitpid(pid, &status, 0);
868
869 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
870 llen += printf("waitpid()");
871 pad_spc(llen, 64, "[FAIL]\n");
872 return 1;
873 }
874 pad_spc(llen, 64, " [OK]\n");
875 return 0;
876 }
877}
878
1a5454f6
WT		 879/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
880int prepare(void)
881{
882 struct stat stat_buf;
883
884 /* It's possible that /dev doesn't even exist or was not mounted, so
885 * we'll try to create it, mount it, or create minimal entries into it.
886 * We want at least /dev/null and /dev/console.
887 */
888 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
889 if (stat("/dev/console", &stat_buf) != 0 ||
890 stat("/dev/null", &stat_buf) != 0) {
891 /* try devtmpfs first, otherwise fall back to manual creation */
892 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
893 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
894 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
895 }
896 }
897 }
898
899 /* If no /dev/console was found before calling init, stdio is closed so
900 * we need to reopen it from /dev/console. If it failed above, it will
901 * still fail here and we cannot emit a message anyway.
902 */
903 if (close(dup(1)) == -1) {
904 int fd = open("/dev/console", O_RDWR);
905
906 if (fd >= 0) {
907 if (fd != 0)
908 dup2(fd, 0);
909 if (fd != 1)
910 dup2(fd, 1);
911 if (fd != 2)
912 dup2(fd, 2);
913 if (fd > 2)
914 close(fd);
915 puts("\nSuccessfully reopened /dev/console.");
916 }
917 }
918
919 /* try to mount /proc if not mounted. Silently fail otherwise */
920 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
921 if (stat("/proc/self", &stat_buf) != 0)
922 mount("/proc", "/proc", "proc", 0, 0);
923 }
924
925 return 0;
926}
b4844fa0 927
23da7bc9 928/* This is the definition of known test names, with their functions */
c4560bd8 929static const struct test test_names[] = {
23da7bc9 930 /* add new tests here */
97357168
TW		 931 { .name = "syscall", .func = run_syscall },
932 { .name = "stdlib", .func = run_stdlib },
69f2cd9f 933 { .name = "vfprintf", .func = run_vfprintf },
97357168 934 { .name = "protection", .func = run_protection },
23da7bc9
WT		 935 { 0 }
936};
937
362aecb2
WT		 938int main(int argc, char **argv, char **envp)
939{
940 int min = 0;
941 int max = __INT_MAX__;
942 int ret = 0;
23da7bc9
WT		 943 int err;
944 int idx;
945 char *test;
362aecb2
WT		 946
947 environ = envp;
948
1a5454f6
WT		 949 /* when called as init, it's possible that no console was opened, for
950 * example if no /dev file system was provided. We'll check that fd#1
951 * was opened, and if not we'll attempt to create and open /dev/console
952 * and /dev/null that we'll use for later tests.
953 */
954 if (getpid() == 1)
955 prepare();
956
23da7bc9
WT		 957 /* the definition of a series of tests comes from either argv[1] or the
958 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
959 * series of test names and optional ranges:
960 * syscall:5-15[:.*],stdlib:8-10
961 */
962 test = argv[1];
963 if (!test)
964 test = getenv("NOLIBC_TEST");
965
966 if (test) {
967 char *comma, *colon, *dash, *value;
968
969 do {
970 comma = strchr(test, ',');
971 if (comma)
972 *(comma++) = '\0';
973
974 colon = strchr(test, ':');
975 if (colon)
976 *(colon++) = '\0';
977
978 for (idx = 0; test_names[idx].name; idx++) {
979 if (strcmp(test, test_names[idx].name) == 0)
980 break;
981 }
982
983 if (test_names[idx].name) {
984 /* The test was named, it will be called at least
985 * once. We may have an optional range at <colon>
986 * here, which defaults to the full range.
987 */
988 do {
989 min = 0; max = __INT_MAX__;
990 value = colon;
991 if (value && *value) {
992 colon = strchr(value, ':');
993 if (colon)
994 *(colon++) = '\0';
995
996 dash = strchr(value, '-');
997 if (dash)
998 *(dash++) = '\0';
999
1000 /* support :val: :min-max: :min-: :-max: */
1001 if (*value)
1002 min = atoi(value);
1003 if (!dash)
1004 max = min;
1005 else if (*dash)
1006 max = atoi(dash);
1007
1008 value = colon;
1009 }
1010
1011 /* now's time to call the test */
1012 printf("Running test '%s'\n", test_names[idx].name);
1013 err = test_names[idx].func(min, max);
1014 ret += err;
1015 printf("Errors during this test: %d\n\n", err);
1016 } while (colon && *colon);
1017 } else
1018 printf("Ignoring unknown test name '%s'\n", test);
1019
1020 test = comma;
1021 } while (test && *test);
1022 } else {
1023 /* no test mentioned, run everything */
1024 for (idx = 0; test_names[idx].name; idx++) {
1025 printf("Running test '%s'\n", test_names[idx].name);
1026 err = test_names[idx].func(min, max);
1027 ret += err;
1028 printf("Errors during this test: %d\n\n", err);
1029 }
1030 }
1031
362aecb2 1032 printf("Total number of errors: %d\n", ret);
f49896d7
WT		 1033
1034 if (getpid() == 1) {
1035 /* we're running as init, there's no other process on the
1036 * system, thus likely started from a VM for a quick check.
1037 * Exiting will provoke a kernel panic that may be reported
1038 * as an error by Qemu or the hypervisor, while stopping
1039 * cleanly will often be reported as a success. This allows
1040 * to use the output of this program for bisecting kernels.
1041 */
1042 printf("Leaving init with final status: %d\n", !!ret);
1043 if (ret == 0)
1044 reboot(LINUX_REBOOT_CMD_POWER_OFF);
aa73a86c
WT		 1045#if defined(__x86_64__)
1046 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1047 * exit with status code 2N+1 when N is written to 0x501. We
1048 * hard-code the syscall here as it's arch-dependent.
1049 */
1da02f51 1050#if defined(_NOLIBC_SYS_H)
aa73a86c 1051 else if (my_syscall3(__NR_ioperm, 0x501, 1, 1) == 0)
1da02f51
WT		 1052#else
1053 else if (ioperm(0x501, 1, 1) == 0)
1054#endif
7f291cfa 1055 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
aa73a86c
WT		 1056 /* if it does nothing, fall back to the regular panic */
1057#endif
f49896d7
WT		 1058 }
1059
362aecb2
WT		 1060 printf("Exiting with status %d\n", !!ret);
1061 return !!ret;
1062}
Linux 6.x block layer and io_uring tree(s)