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tools/nolibc: tests: fix build on non-c99 compliant compilers
[linux-block.git] / tools / testing / selftests / nolibc / nolibc-test.c
CommitLineData
362aecb2
WT		 1// SPDX-License-Identifier: GPL-2.0
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>
23#include <sys/mount.h>
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>
37#include <unistd.h>
38#endif
362aecb2
WT		 39#endif
40
41/* will be used by nolibc by getenv() */
42char **environ;
43
23da7bc9
WT		 44/* definition of a series of tests */
45struct test {
46 const char *name; // test name
47 int (*func)(int min, int max); // handler
48};
49
1da02f51
WT		 50#ifndef _NOLIBC_STDLIB_H
51char *itoa(int i)
52{
53 static char buf[12];
54 int ret;
55
56 ret = snprintf(buf, sizeof(buf), "%d", i);
57 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
58}
59#endif
60
362aecb2
WT		 61#define CASE_ERR(err) \
62 case err: return #err
63
64/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
65 * or the decimal value for less common ones.
66 */
67const char *errorname(int err)
68{
69 switch (err) {
70 case 0: return "SUCCESS";
71 CASE_ERR(EPERM);
72 CASE_ERR(ENOENT);
73 CASE_ERR(ESRCH);
74 CASE_ERR(EINTR);
75 CASE_ERR(EIO);
76 CASE_ERR(ENXIO);
77 CASE_ERR(E2BIG);
78 CASE_ERR(ENOEXEC);
79 CASE_ERR(EBADF);
80 CASE_ERR(ECHILD);
81 CASE_ERR(EAGAIN);
82 CASE_ERR(ENOMEM);
83 CASE_ERR(EACCES);
84 CASE_ERR(EFAULT);
85 CASE_ERR(ENOTBLK);
86 CASE_ERR(EBUSY);
87 CASE_ERR(EEXIST);
88 CASE_ERR(EXDEV);
89 CASE_ERR(ENODEV);
90 CASE_ERR(ENOTDIR);
91 CASE_ERR(EISDIR);
92 CASE_ERR(EINVAL);
93 CASE_ERR(ENFILE);
94 CASE_ERR(EMFILE);
95 CASE_ERR(ENOTTY);
96 CASE_ERR(ETXTBSY);
97 CASE_ERR(EFBIG);
98 CASE_ERR(ENOSPC);
99 CASE_ERR(ESPIPE);
100 CASE_ERR(EROFS);
101 CASE_ERR(EMLINK);
102 CASE_ERR(EPIPE);
103 CASE_ERR(EDOM);
104 CASE_ERR(ERANGE);
105 CASE_ERR(ENOSYS);
106 default:
107 return itoa(err);
108 }
109}
110
111static int pad_spc(int llen, int cnt, const char *fmt, ...)
112{
113 va_list args;
114 int len;
115 int ret;
116
117 for (len = 0; len < cnt - llen; len++)
118 putchar(' ');
119
120 va_start(args, fmt);
121 ret = vfprintf(stdout, fmt, args);
122 va_end(args);
123 return ret < 0 ? ret : ret + len;
124}
125
126/* The tests below are intended to be used by the macroes, which evaluate
127 * expression <expr>, print the status to stdout, and update the "ret"
128 * variable to count failures. The functions themselves return the number
129 * of failures, thus either 0 or 1.
130 */
131
132#define EXPECT_ZR(cond, expr) \
a0994fb9 133 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
362aecb2
WT		 134
135static int expect_zr(int expr, int llen)
136{
137 int ret = !(expr == 0);
138
139 llen += printf(" = %d ", expr);
a0994fb9 140 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 141 return ret;
142}
143
144
145#define EXPECT_NZ(cond, expr, val) \
a0994fb9 146 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_nz(expr, llen; } while (0)
362aecb2
WT		 147
148static int expect_nz(int expr, int llen)
149{
150 int ret = !(expr != 0);
151
152 llen += printf(" = %d ", expr);
a0994fb9 153 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 154 return ret;
155}
156
157
158#define EXPECT_EQ(cond, expr, val) \
a0994fb9 159 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_eq(expr, llen, val); } while (0)
362aecb2 160
a0994fb9 161static int expect_eq(uint64_t expr, int llen, uint64_t val)
362aecb2
WT		 162{
163 int ret = !(expr == val);
164
a0994fb9
VD		 165 llen += printf(" = %lld ", expr);
166 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 167 return ret;
168}
169
170
171#define EXPECT_NE(cond, expr, val) \
a0994fb9 172 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ne(expr, llen, val); } while (0)
362aecb2
WT		 173
174static int expect_ne(int expr, int llen, int val)
175{
176 int ret = !(expr != val);
177
178 llen += printf(" = %d ", expr);
a0994fb9 179 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 180 return ret;
181}
182
183
184#define EXPECT_GE(cond, expr, val) \
a0994fb9 185 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ge(expr, llen, val); } while (0)
362aecb2
WT		 186
187static int expect_ge(int expr, int llen, int val)
188{
189 int ret = !(expr >= val);
190
191 llen += printf(" = %d ", expr);
a0994fb9 192 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 193 return ret;
194}
195
196
197#define EXPECT_GT(cond, expr, val) \
a0994fb9 198 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_gt(expr, llen, val); } while (0)
362aecb2
WT		 199
200static int expect_gt(int expr, int llen, int val)
201{
202 int ret = !(expr > val);
203
204 llen += printf(" = %d ", expr);
a0994fb9 205 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 206 return ret;
207}
208
209
210#define EXPECT_LE(cond, expr, val) \
a0994fb9 211 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_le(expr, llen, val); } while (0)
362aecb2
WT		 212
213static int expect_le(int expr, int llen, int val)
214{
215 int ret = !(expr <= val);
216
217 llen += printf(" = %d ", expr);
a0994fb9 218 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 219 return ret;
220}
221
222
223#define EXPECT_LT(cond, expr, val) \
a0994fb9 224 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_lt(expr, llen, val); } while (0)
362aecb2
WT		 225
226static int expect_lt(int expr, int llen, int val)
227{
228 int ret = !(expr < val);
229
230 llen += printf(" = %d ", expr);
a0994fb9 231 pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
362aecb2
WT		 232 return ret;
233}
234
235
236#define EXPECT_SYSZR(cond, expr) \
a0994fb9 237 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
362aecb2
WT		 238
239static int expect_syszr(int expr, int llen)
240{
241 int ret = 0;
242
243 if (expr) {
244 ret = 1;
245 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 246 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 247 } else {
248 llen += printf(" = %d ", expr);
a0994fb9 249 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 250 }
251 return ret;
252}
253
254
255#define EXPECT_SYSEQ(cond, expr, val) \
a0994fb9 256 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syseq(expr, llen, val); } while (0)
362aecb2
WT		 257
258static int expect_syseq(int expr, int llen, int val)
259{
260 int ret = 0;
261
262 if (expr != val) {
263 ret = 1;
264 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 265 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 266 } else {
267 llen += printf(" = %d ", expr);
a0994fb9 268 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 269 }
270 return ret;
271}
272
273
274#define EXPECT_SYSNE(cond, expr, val) \
a0994fb9 275 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_sysne(expr, llen, val); } while (0)
362aecb2
WT		 276
277static int expect_sysne(int expr, int llen, int val)
278{
279 int ret = 0;
280
281 if (expr == val) {
282 ret = 1;
283 llen += printf(" = %d %s ", expr, errorname(errno));
a0994fb9 284 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2
WT		 285 } else {
286 llen += printf(" = %d ", expr);
a0994fb9 287 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 288 }
289 return ret;
290}
291
292
293#define EXPECT_SYSER(cond, expr, expret, experr) \
a0994fb9 294 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
362aecb2
WT		 295
296static int expect_syserr(int expr, int expret, int experr, int llen)
297{
298 int ret = 0;
299 int _errno = errno;
300
301 llen += printf(" = %d %s ", expr, errorname(_errno));
302 if (expr != expret || _errno != experr) {
303 ret = 1;
304 llen += printf(" != (%d %s) ", expret, errorname(experr));
a0994fb9 305 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 306 } else {
a0994fb9 307 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 308 }
309 return ret;
310}
311
312
313#define EXPECT_PTRZR(cond, expr) \
a0994fb9 314 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
362aecb2
WT		 315
316static int expect_ptrzr(const void *expr, int llen)
317{
318 int ret = 0;
319
320 llen += printf(" = <%p> ", expr);
321 if (expr) {
322 ret = 1;
a0994fb9 323 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 324 } else {
a0994fb9 325 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 326 }
327 return ret;
328}
329
330
331#define EXPECT_PTRNZ(cond, expr) \
a0994fb9 332 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
362aecb2
WT		 333
334static int expect_ptrnz(const void *expr, int llen)
335{
336 int ret = 0;
337
338 llen += printf(" = <%p> ", expr);
339 if (!expr) {
340 ret = 1;
a0994fb9 341 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 342 } else {
a0994fb9 343 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 344 }
345 return ret;
346}
347
348
349#define EXPECT_STRZR(cond, expr) \
a0994fb9 350 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
362aecb2
WT		 351
352static int expect_strzr(const char *expr, int llen)
353{
354 int ret = 0;
355
356 llen += printf(" = <%s> ", expr);
357 if (expr) {
358 ret = 1;
a0994fb9 359 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 360 } else {
a0994fb9 361 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 362 }
363 return ret;
364}
365
366
367#define EXPECT_STRNZ(cond, expr) \
a0994fb9 368 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
362aecb2
WT		 369
370static int expect_strnz(const char *expr, int llen)
371{
372 int ret = 0;
373
374 llen += printf(" = <%s> ", expr);
375 if (!expr) {
376 ret = 1;
a0994fb9 377 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 378 } else {
a0994fb9 379 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 380 }
381 return ret;
382}
383
384
385#define EXPECT_STREQ(cond, expr, cmp) \
a0994fb9 386 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_streq(expr, llen, cmp); } while (0)
362aecb2
WT		 387
388static int expect_streq(const char *expr, int llen, const char *cmp)
389{
390 int ret = 0;
391
392 llen += printf(" = <%s> ", expr);
393 if (strcmp(expr, cmp) != 0) {
394 ret = 1;
a0994fb9 395 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 396 } else {
a0994fb9 397 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 398 }
399 return ret;
400}
401
402
403#define EXPECT_STRNE(cond, expr, cmp) \
a0994fb9 404 do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_strne(expr, llen, cmp); } while (0)
362aecb2
WT		 405
406static int expect_strne(const char *expr, int llen, const char *cmp)
407{
408 int ret = 0;
409
410 llen += printf(" = <%s> ", expr);
411 if (strcmp(expr, cmp) == 0) {
412 ret = 1;
a0994fb9 413 llen += pad_spc(llen, 64, "[FAIL]\n");
362aecb2 414 } else {
a0994fb9 415 llen += pad_spc(llen, 64, " [OK]\n");
362aecb2
WT		 416 }
417 return ret;
418}
419
23da7bc9 420
362aecb2
WT		 421/* declare tests based on line numbers. There must be exactly one test per line. */
422#define CASE_TEST(name) \
423 case __LINE__: llen += printf("%d %s", test, #name);
424
425
b4844fa0
WT		 426/* used by some syscall tests below */
427int test_getdents64(const char *dir)
428{
429 char buffer[4096];
430 int fd, ret;
431 int err;
432
433 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
434 if (ret < 0)
435 return ret;
436
437 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
438 err = errno;
439 close(fd);
440
441 errno = err;
442 return ret;
443}
444
a290296a
AF		 445static int test_getpagesize(void)
446{
447 long x = getpagesize();
448 int c;
449
450 if (x < 0)
451 return x;
452
453#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
454 /*
455 * x86 family is always 4K page.
456 */
457 c = (x == 4096);
458#elif defined(__aarch64__)
459 /*
460 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
461 * which are selected at kernel compilation time.
462 */
463 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
464#else
465 /*
466 * Assuming other architectures must have at least 4K page.
467 */
468 c = (x >= 4096);
469#endif
470
471 return !c;
472}
473
b4844fa0
WT		 474/* Run syscall tests between IDs <min> and <max>.
475 * Return 0 on success, non-zero on failure.
476 */
477int run_syscall(int min, int max)
478{
479 struct stat stat_buf;
3e2d337b 480 int euid0;
7172f1c6 481 int proc;
b4844fa0
WT		 482 int test;
483 int tmp;
484 int ret = 0;
485 void *p1, *p2;
486
7172f1c6
WT		 487 /* <proc> indicates whether or not /proc is mounted */
488 proc = stat("/proc", &stat_buf) == 0;
489
3e2d337b
WT		 490 /* this will be used to skip certain tests that can't be run unprivileged */
491 euid0 = geteuid() == 0;
492
b4844fa0
WT		 493 for (test = min; test >= 0 && test <= max; test++) {
494 int llen = 0; // line length
495
496 /* avoid leaving empty lines below, this will insert holes into
497 * test numbers.
498 */
499 switch (test + __LINE__ + 1) {
500 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
501 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
1da02f51 502#ifdef NOLIBC
b4844fa0 503 CASE_TEST(gettid); EXPECT_SYSNE(1, gettid(), -1); break;
1da02f51 504#endif
b4844fa0
WT		 505 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
506 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
507 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
508 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
509 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
510 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
511 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
512 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); break;
513 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
514 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
7172f1c6
WT		 515 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break;
516 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
517 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
3e2d337b 518 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
b4844fa0 519 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
7172f1c6 520 CASE_TEST(chroot_exe); EXPECT_SYSER(proc, chroot("/proc/self/exe"), -1, ENOTDIR); break;
b4844fa0
WT		 521 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
522 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
523 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
524 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
525 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
526 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
527 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
528 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
529 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
530 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
531 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
532 CASE_TEST(gettimeofday_null); EXPECT_SYSZR(1, gettimeofday(NULL, NULL)); break;
1da02f51 533#ifdef NOLIBC
b4844fa0
WT		 534 CASE_TEST(gettimeofday_bad1); EXPECT_SYSER(1, gettimeofday((void *)1, NULL), -1, EFAULT); break;
535 CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
536 CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
1da02f51 537#endif
a290296a 538 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
b4844fa0
WT		 539 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
540 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
541 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
542 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
3e2d337b 543 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
7172f1c6 544 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/net", "/blah"), -1, EXDEV); break;
b4844fa0
WT		 545 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
546 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
547 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
548 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
549 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
550 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
551 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
552 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
553 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
554 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
555 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
556 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;
557 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
558 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
559 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
560 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
561 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
562 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
563 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
564 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
565 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
566 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
567 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
568 case __LINE__:
569 return ret; /* must be last */
570 /* note: do not set any defaults so as to permit holes above */
571 }
572 }
573 return ret;
574}
575
95bc9894
WT		 576int run_stdlib(int min, int max)
577{
578 int test;
579 int tmp;
580 int ret = 0;
581 void *p1, *p2;
582
583 for (test = min; test >= 0 && test <= max; test++) {
584 int llen = 0; // line length
585
586 /* avoid leaving empty lines below, this will insert holes into
587 * test numbers.
588 */
589 switch (test + __LINE__ + 1) {
590 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
591 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
592 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
593 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
594 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
595 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
596 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
597 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
598 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
599 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
600 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
601 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
c80b5a0a
WT		 602 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
603 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
604 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
605 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
606 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
607 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
608 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
d1209597
VD		 609 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
610 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
611 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
612 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
613 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
614 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
615 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
616 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
617 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
618 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
619 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
620 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
621 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
622 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
623 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
624 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
625 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
626 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
627 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
628 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
629 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
630 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
631 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
632 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
633 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
634 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
635 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
636 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) INTPTR_MIN); break;
637 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) INTPTR_MAX); break;
638 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
639 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) INTPTR_MIN); break;
640 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) INTPTR_MAX); break;
641 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
642 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INTPTR_MIN); break;
643 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INTPTR_MAX); break;
644 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINTPTR_MAX); break;
645#if __SIZEOF_LONG__ == 8
646 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break;
647 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break;
648 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break;
649 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break;
650 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break;
651 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break;
652#elif __SIZEOF_LONG__ == 4
653 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x80000000); break;
654 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffff); break;
655 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break;
656 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break;
657 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break;
658 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffU); break;
659#else
660# warning "__SIZEOF_LONG__ is undefined"
661#endif /* __SIZEOF_LONG__ */
95bc9894
WT		 662 case __LINE__:
663 return ret; /* must be last */
664 /* note: do not set any defaults so as to permit holes above */
665 }
666 }
667 return ret;
668}
669
97357168
TW		 670static int smash_stack(void)
671{
672 char buf[100];
e7654c3f 673 volatile char *ptr = buf;
aa662d12 674 size_t i;
97357168 675
aa662d12 676 for (i = 0; i < 200; i++)
e7654c3f 677 ptr[i] = 'P';
97357168
TW		 678
679 return 1;
680}
681
682static int run_protection(int min, int max)
683{
684 pid_t pid;
685 int llen = 0, status;
686
687 llen += printf("0 -fstackprotector ");
688
689#if !defined(NOLIBC_STACKPROTECTOR)
690 llen += printf("not supported");
691 pad_spc(llen, 64, "[SKIPPED]\n");
692 return 0;
693#endif
694
695 pid = -1;
696 pid = fork();
697
698 switch (pid) {
699 case -1:
700 llen += printf("fork()");
701 pad_spc(llen, 64, "[FAIL]\n");
702 return 1;
703
704 case 0:
705 close(STDOUT_FILENO);
706 close(STDERR_FILENO);
707
708 smash_stack();
709 return 1;
710
711 default:
712 pid = waitpid(pid, &status, 0);
713
714 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
715 llen += printf("waitpid()");
716 pad_spc(llen, 64, "[FAIL]\n");
717 return 1;
718 }
719 pad_spc(llen, 64, " [OK]\n");
720 return 0;
721 }
722}
723
1a5454f6
WT		 724/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
725int prepare(void)
726{
727 struct stat stat_buf;
728
729 /* It's possible that /dev doesn't even exist or was not mounted, so
730 * we'll try to create it, mount it, or create minimal entries into it.
731 * We want at least /dev/null and /dev/console.
732 */
733 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
734 if (stat("/dev/console", &stat_buf) != 0 ||
735 stat("/dev/null", &stat_buf) != 0) {
736 /* try devtmpfs first, otherwise fall back to manual creation */
737 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
738 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
739 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
740 }
741 }
742 }
743
744 /* If no /dev/console was found before calling init, stdio is closed so
745 * we need to reopen it from /dev/console. If it failed above, it will
746 * still fail here and we cannot emit a message anyway.
747 */
748 if (close(dup(1)) == -1) {
749 int fd = open("/dev/console", O_RDWR);
750
751 if (fd >= 0) {
752 if (fd != 0)
753 dup2(fd, 0);
754 if (fd != 1)
755 dup2(fd, 1);
756 if (fd != 2)
757 dup2(fd, 2);
758 if (fd > 2)
759 close(fd);
760 puts("\nSuccessfully reopened /dev/console.");
761 }
762 }
763
764 /* try to mount /proc if not mounted. Silently fail otherwise */
765 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
766 if (stat("/proc/self", &stat_buf) != 0)
767 mount("/proc", "/proc", "proc", 0, 0);
768 }
769
770 return 0;
771}
b4844fa0 772
23da7bc9 773/* This is the definition of known test names, with their functions */
c4560bd8 774static const struct test test_names[] = {
23da7bc9 775 /* add new tests here */
97357168
TW		 776 { .name = "syscall", .func = run_syscall },
777 { .name = "stdlib", .func = run_stdlib },
778 { .name = "protection", .func = run_protection },
23da7bc9
WT		 779 { 0 }
780};
781
362aecb2
WT		 782int main(int argc, char **argv, char **envp)
783{
784 int min = 0;
785 int max = __INT_MAX__;
786 int ret = 0;
23da7bc9
WT		 787 int err;
788 int idx;
789 char *test;
362aecb2
WT		 790
791 environ = envp;
792
1a5454f6
WT		 793 /* when called as init, it's possible that no console was opened, for
794 * example if no /dev file system was provided. We'll check that fd#1
795 * was opened, and if not we'll attempt to create and open /dev/console
796 * and /dev/null that we'll use for later tests.
797 */
798 if (getpid() == 1)
799 prepare();
800
23da7bc9
WT		 801 /* the definition of a series of tests comes from either argv[1] or the
802 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
803 * series of test names and optional ranges:
804 * syscall:5-15[:.*],stdlib:8-10
805 */
806 test = argv[1];
807 if (!test)
808 test = getenv("NOLIBC_TEST");
809
810 if (test) {
811 char *comma, *colon, *dash, *value;
812
813 do {
814 comma = strchr(test, ',');
815 if (comma)
816 *(comma++) = '\0';
817
818 colon = strchr(test, ':');
819 if (colon)
820 *(colon++) = '\0';
821
822 for (idx = 0; test_names[idx].name; idx++) {
823 if (strcmp(test, test_names[idx].name) == 0)
824 break;
825 }
826
827 if (test_names[idx].name) {
828 /* The test was named, it will be called at least
829 * once. We may have an optional range at <colon>
830 * here, which defaults to the full range.
831 */
832 do {
833 min = 0; max = __INT_MAX__;
834 value = colon;
835 if (value && *value) {
836 colon = strchr(value, ':');
837 if (colon)
838 *(colon++) = '\0';
839
840 dash = strchr(value, '-');
841 if (dash)
842 *(dash++) = '\0';
843
844 /* support :val: :min-max: :min-: :-max: */
845 if (*value)
846 min = atoi(value);
847 if (!dash)
848 max = min;
849 else if (*dash)
850 max = atoi(dash);
851
852 value = colon;
853 }
854
855 /* now's time to call the test */
856 printf("Running test '%s'\n", test_names[idx].name);
857 err = test_names[idx].func(min, max);
858 ret += err;
859 printf("Errors during this test: %d\n\n", err);
860 } while (colon && *colon);
861 } else
862 printf("Ignoring unknown test name '%s'\n", test);
863
864 test = comma;
865 } while (test && *test);
866 } else {
867 /* no test mentioned, run everything */
868 for (idx = 0; test_names[idx].name; idx++) {
869 printf("Running test '%s'\n", test_names[idx].name);
870 err = test_names[idx].func(min, max);
871 ret += err;
872 printf("Errors during this test: %d\n\n", err);
873 }
874 }
875
362aecb2 876 printf("Total number of errors: %d\n", ret);
f49896d7
WT		 877
878 if (getpid() == 1) {
879 /* we're running as init, there's no other process on the
880 * system, thus likely started from a VM for a quick check.
881 * Exiting will provoke a kernel panic that may be reported
882 * as an error by Qemu or the hypervisor, while stopping
883 * cleanly will often be reported as a success. This allows
884 * to use the output of this program for bisecting kernels.
885 */
886 printf("Leaving init with final status: %d\n", !!ret);
887 if (ret == 0)
888 reboot(LINUX_REBOOT_CMD_POWER_OFF);
aa73a86c
WT		 889#if defined(__x86_64__)
890 /* QEMU started with "-device isa-debug-exit -no-reboot" will
891 * exit with status code 2N+1 when N is written to 0x501. We
892 * hard-code the syscall here as it's arch-dependent.
893 */
1da02f51 894#if defined(_NOLIBC_SYS_H)
aa73a86c 895 else if (my_syscall3(__NR_ioperm, 0x501, 1, 1) == 0)
1da02f51
WT		 896#else
897 else if (ioperm(0x501, 1, 1) == 0)
898#endif
aa73a86c
WT		 899 asm volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
900 /* if it does nothing, fall back to the regular panic */
901#endif
f49896d7
WT		 902 }
903
362aecb2
WT		 904 printf("Exiting with status %d\n", !!ret);
905 return !!ret;
906}
Linux 6.x block layer and io_uring tree(s)