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1// SPDX-License-Identifier: GPL-2.0
2
3#define _GNU_SOURCE
4
5/* platform-specific include files coming from the compiler */
6#include <limits.h>
7
8/* libc-specific include files
9 * The program may be built in 3 ways:
10 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
11 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
12 * $(CC) with default libc => NOLIBC* never defined
13 */
14#ifndef NOLIBC
15#include <stdio.h>
16#include <stdlib.h>
17#include <string.h>
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
39#endif
40
41/* will be used by nolibc by getenv() */
42char **environ;
43
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
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
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) \
133 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
134
135static int expect_zr(int expr, int llen)
136{
137 int ret = !(expr == 0);
138
139 llen += printf(" = %d ", expr);
140 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
141 return ret;
142}
143
144
145#define EXPECT_NZ(cond, expr, val) \
146 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_nz(expr, llen; } while (0)
147
148static int expect_nz(int expr, int llen)
149{
150 int ret = !(expr != 0);
151
152 llen += printf(" = %d ", expr);
153 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
154 return ret;
155}
156
157
158#define EXPECT_EQ(cond, expr, val) \
159 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_eq(expr, llen, val); } while (0)
160
161static int expect_eq(int expr, int llen, int val)
162{
163 int ret = !(expr == val);
164
165 llen += printf(" = %d ", expr);
166 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
167 return ret;
168}
169
170
171#define EXPECT_NE(cond, expr, val) \
172 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ne(expr, llen, val); } while (0)
173
174static int expect_ne(int expr, int llen, int val)
175{
176 int ret = !(expr != val);
177
178 llen += printf(" = %d ", expr);
179 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
180 return ret;
181}
182
183
184#define EXPECT_GE(cond, expr, val) \
185 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ge(expr, llen, val); } while (0)
186
187static int expect_ge(int expr, int llen, int val)
188{
189 int ret = !(expr >= val);
190
191 llen += printf(" = %d ", expr);
192 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
193 return ret;
194}
195
196
197#define EXPECT_GT(cond, expr, val) \
198 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_gt(expr, llen, val); } while (0)
199
200static int expect_gt(int expr, int llen, int val)
201{
202 int ret = !(expr > val);
203
204 llen += printf(" = %d ", expr);
205 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
206 return ret;
207}
208
209
210#define EXPECT_LE(cond, expr, val) \
211 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_le(expr, llen, val); } while (0)
212
213static int expect_le(int expr, int llen, int val)
214{
215 int ret = !(expr <= val);
216
217 llen += printf(" = %d ", expr);
218 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
219 return ret;
220}
221
222
223#define EXPECT_LT(cond, expr, val) \
224 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_lt(expr, llen, val); } while (0)
225
226static int expect_lt(int expr, int llen, int val)
227{
228 int ret = !(expr < val);
229
230 llen += printf(" = %d ", expr);
231 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
232 return ret;
233}
234
235
236#define EXPECT_SYSZR(cond, expr) \
237 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
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));
246 llen += pad_spc(llen, 40, "[FAIL]\n");
247 } else {
248 llen += printf(" = %d ", expr);
249 llen += pad_spc(llen, 40, " [OK]\n");
250 }
251 return ret;
252}
253
254
255#define EXPECT_SYSEQ(cond, expr, val) \
256 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syseq(expr, llen, val); } while (0)
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));
265 llen += pad_spc(llen, 40, "[FAIL]\n");
266 } else {
267 llen += printf(" = %d ", expr);
268 llen += pad_spc(llen, 40, " [OK]\n");
269 }
270 return ret;
271}
272
273
274#define EXPECT_SYSNE(cond, expr, val) \
275 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_sysne(expr, llen, val); } while (0)
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));
284 llen += pad_spc(llen, 40, "[FAIL]\n");
285 } else {
286 llen += printf(" = %d ", expr);
287 llen += pad_spc(llen, 40, " [OK]\n");
288 }
289 return ret;
290}
291
292
293#define EXPECT_SYSER(cond, expr, expret, experr) \
294 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
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));
305 llen += pad_spc(llen, 40, "[FAIL]\n");
306 } else {
307 llen += pad_spc(llen, 40, " [OK]\n");
308 }
309 return ret;
310}
311
312
313#define EXPECT_PTRZR(cond, expr) \
314 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
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;
323 llen += pad_spc(llen, 40, "[FAIL]\n");
324 } else {
325 llen += pad_spc(llen, 40, " [OK]\n");
326 }
327 return ret;
328}
329
330
331#define EXPECT_PTRNZ(cond, expr) \
332 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
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;
341 llen += pad_spc(llen, 40, "[FAIL]\n");
342 } else {
343 llen += pad_spc(llen, 40, " [OK]\n");
344 }
345 return ret;
346}
347
348
349#define EXPECT_STRZR(cond, expr) \
350 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
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;
359 llen += pad_spc(llen, 40, "[FAIL]\n");
360 } else {
361 llen += pad_spc(llen, 40, " [OK]\n");
362 }
363 return ret;
364}
365
366
367#define EXPECT_STRNZ(cond, expr) \
368 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
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;
377 llen += pad_spc(llen, 40, "[FAIL]\n");
378 } else {
379 llen += pad_spc(llen, 40, " [OK]\n");
380 }
381 return ret;
382}
383
384
385#define EXPECT_STREQ(cond, expr, cmp) \
386 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_streq(expr, llen, cmp); } while (0)
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;
395 llen += pad_spc(llen, 40, "[FAIL]\n");
396 } else {
397 llen += pad_spc(llen, 40, " [OK]\n");
398 }
399 return ret;
400}
401
402
403#define EXPECT_STRNE(cond, expr, cmp) \
404 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strne(expr, llen, cmp); } while (0)
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;
413 llen += pad_spc(llen, 40, "[FAIL]\n");
414 } else {
415 llen += pad_spc(llen, 40, " [OK]\n");
416 }
417 return ret;
418}
419
420
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
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
445/* Run syscall tests between IDs <min> and <max>.
446 * Return 0 on success, non-zero on failure.
447 */
448int run_syscall(int min, int max)
449{
450 struct stat stat_buf;
451 int proc;
452 int test;
453 int tmp;
454 int ret = 0;
455 void *p1, *p2;
456
457 /* <proc> indicates whether or not /proc is mounted */
458 proc = stat("/proc", &stat_buf) == 0;
459
460 for (test = min; test >= 0 && test <= max; test++) {
461 int llen = 0; // line length
462
463 /* avoid leaving empty lines below, this will insert holes into
464 * test numbers.
465 */
466 switch (test + __LINE__ + 1) {
467 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
468 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
469#ifdef NOLIBC
470 CASE_TEST(gettid); EXPECT_SYSNE(1, gettid(), -1); break;
471#endif
472 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
473 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
474 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
475 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
476 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
477 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
478 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
479 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); break;
480 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
481 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
482 CASE_TEST(chmod_net); EXPECT_SYSZR(proc, chmod("/proc/self/net", 0555)); break;
483 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
484 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
485 CASE_TEST(chroot_root); EXPECT_SYSZR(1, chroot("/")); break;
486 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
487 CASE_TEST(chroot_exe); EXPECT_SYSER(proc, chroot("/proc/self/exe"), -1, ENOTDIR); break;
488 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
489 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
490 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
491 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
492 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
493 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
494 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
495 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
496 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
497 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
498 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
499 CASE_TEST(gettimeofday_null); EXPECT_SYSZR(1, gettimeofday(NULL, NULL)); break;
500#ifdef NOLIBC
501 CASE_TEST(gettimeofday_bad1); EXPECT_SYSER(1, gettimeofday((void *)1, NULL), -1, EFAULT); break;
502 CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
503 CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
504#endif
505 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
506 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
507 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
508 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
509 CASE_TEST(link_dir); EXPECT_SYSER(1, link("/", "/blah"), -1, EPERM); break;
510 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/net", "/blah"), -1, EXDEV); break;
511 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
512 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
513 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
514 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
515 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
516 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
517 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
518 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
519 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
520 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
521 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
522 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;
523 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
524 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
525 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
526 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
527 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
528 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
529 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
530 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
531 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
532 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
533 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
534 case __LINE__:
535 return ret; /* must be last */
536 /* note: do not set any defaults so as to permit holes above */
537 }
538 }
539 return ret;
540}
541
542int run_stdlib(int min, int max)
543{
544 int test;
545 int tmp;
546 int ret = 0;
547 void *p1, *p2;
548
549 for (test = min; test >= 0 && test <= max; test++) {
550 int llen = 0; // line length
551
552 /* avoid leaving empty lines below, this will insert holes into
553 * test numbers.
554 */
555 switch (test + __LINE__ + 1) {
556 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
557 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
558 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
559 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
560 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
561 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
562 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
563 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
564 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
565 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
566 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
567 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
568 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
569 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
570 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
571 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
572 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
573 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
574 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
575 case __LINE__:
576 return ret; /* must be last */
577 /* note: do not set any defaults so as to permit holes above */
578 }
579 }
580 return ret;
581}
582
583/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
584int prepare(void)
585{
586 struct stat stat_buf;
587
588 /* It's possible that /dev doesn't even exist or was not mounted, so
589 * we'll try to create it, mount it, or create minimal entries into it.
590 * We want at least /dev/null and /dev/console.
591 */
592 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
593 if (stat("/dev/console", &stat_buf) != 0 ||
594 stat("/dev/null", &stat_buf) != 0) {
595 /* try devtmpfs first, otherwise fall back to manual creation */
596 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
597 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
598 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
599 }
600 }
601 }
602
603 /* If no /dev/console was found before calling init, stdio is closed so
604 * we need to reopen it from /dev/console. If it failed above, it will
605 * still fail here and we cannot emit a message anyway.
606 */
607 if (close(dup(1)) == -1) {
608 int fd = open("/dev/console", O_RDWR);
609
610 if (fd >= 0) {
611 if (fd != 0)
612 dup2(fd, 0);
613 if (fd != 1)
614 dup2(fd, 1);
615 if (fd != 2)
616 dup2(fd, 2);
617 if (fd > 2)
618 close(fd);
619 puts("\nSuccessfully reopened /dev/console.");
620 }
621 }
622
623 /* try to mount /proc if not mounted. Silently fail otherwise */
624 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
625 if (stat("/proc/self", &stat_buf) != 0)
626 mount("/proc", "/proc", "proc", 0, 0);
627 }
628
629 return 0;
630}
631
632/* This is the definition of known test names, with their functions */
633static struct test test_names[] = {
634 /* add new tests here */
635 { .name = "syscall", .func = run_syscall },
636 { .name = "stdlib", .func = run_stdlib },
637 { 0 }
638};
639
640int main(int argc, char **argv, char **envp)
641{
642 int min = 0;
643 int max = __INT_MAX__;
644 int ret = 0;
645 int err;
646 int idx;
647 char *test;
648
649 environ = envp;
650
651 /* when called as init, it's possible that no console was opened, for
652 * example if no /dev file system was provided. We'll check that fd#1
653 * was opened, and if not we'll attempt to create and open /dev/console
654 * and /dev/null that we'll use for later tests.
655 */
656 if (getpid() == 1)
657 prepare();
658
659 /* the definition of a series of tests comes from either argv[1] or the
660 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
661 * series of test names and optional ranges:
662 * syscall:5-15[:.*],stdlib:8-10
663 */
664 test = argv[1];
665 if (!test)
666 test = getenv("NOLIBC_TEST");
667
668 if (test) {
669 char *comma, *colon, *dash, *value;
670
671 do {
672 comma = strchr(test, ',');
673 if (comma)
674 *(comma++) = '\0';
675
676 colon = strchr(test, ':');
677 if (colon)
678 *(colon++) = '\0';
679
680 for (idx = 0; test_names[idx].name; idx++) {
681 if (strcmp(test, test_names[idx].name) == 0)
682 break;
683 }
684
685 if (test_names[idx].name) {
686 /* The test was named, it will be called at least
687 * once. We may have an optional range at <colon>
688 * here, which defaults to the full range.
689 */
690 do {
691 min = 0; max = __INT_MAX__;
692 value = colon;
693 if (value && *value) {
694 colon = strchr(value, ':');
695 if (colon)
696 *(colon++) = '\0';
697
698 dash = strchr(value, '-');
699 if (dash)
700 *(dash++) = '\0';
701
702 /* support :val: :min-max: :min-: :-max: */
703 if (*value)
704 min = atoi(value);
705 if (!dash)
706 max = min;
707 else if (*dash)
708 max = atoi(dash);
709
710 value = colon;
711 }
712
713 /* now's time to call the test */
714 printf("Running test '%s'\n", test_names[idx].name);
715 err = test_names[idx].func(min, max);
716 ret += err;
717 printf("Errors during this test: %d\n\n", err);
718 } while (colon && *colon);
719 } else
720 printf("Ignoring unknown test name '%s'\n", test);
721
722 test = comma;
723 } while (test && *test);
724 } else {
725 /* no test mentioned, run everything */
726 for (idx = 0; test_names[idx].name; idx++) {
727 printf("Running test '%s'\n", test_names[idx].name);
728 err = test_names[idx].func(min, max);
729 ret += err;
730 printf("Errors during this test: %d\n\n", err);
731 }
732 }
733
734 printf("Total number of errors: %d\n", ret);
735
736 if (getpid() == 1) {
737 /* we're running as init, there's no other process on the
738 * system, thus likely started from a VM for a quick check.
739 * Exiting will provoke a kernel panic that may be reported
740 * as an error by Qemu or the hypervisor, while stopping
741 * cleanly will often be reported as a success. This allows
742 * to use the output of this program for bisecting kernels.
743 */
744 printf("Leaving init with final status: %d\n", !!ret);
745 if (ret == 0)
746 reboot(LINUX_REBOOT_CMD_POWER_OFF);
747#if defined(__x86_64__)
748 /* QEMU started with "-device isa-debug-exit -no-reboot" will
749 * exit with status code 2N+1 when N is written to 0x501. We
750 * hard-code the syscall here as it's arch-dependent.
751 */
752#if defined(_NOLIBC_SYS_H)
753 else if (my_syscall3(__NR_ioperm, 0x501, 1, 1) == 0)
754#else
755 else if (ioperm(0x501, 1, 1) == 0)
756#endif
757 asm volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
758 /* if it does nothing, fall back to the regular panic */
759#endif
760 }
761
762 printf("Exiting with status %d\n", !!ret);
763 return !!ret;
764}
1/* SPDX-License-Identifier: GPL-2.0 */
2
3#define _GNU_SOURCE
4#define _LARGEFILE64_SOURCE
5
6/* libc-specific include files
7 * The program may be built in 3 ways:
8 * $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
9 * $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
10 * $(CC) with default libc => NOLIBC* never defined
11 */
12#ifndef NOLIBC
13#include <stdio.h>
14#include <stdlib.h>
15#include <string.h>
16#ifndef _NOLIBC_STDIO_H
17/* standard libcs need more includes */
18#include <sys/auxv.h>
19#include <sys/io.h>
20#include <sys/ioctl.h>
21#include <sys/mman.h>
22#include <sys/mount.h>
23#include <sys/prctl.h>
24#include <sys/reboot.h>
25#include <sys/resource.h>
26#include <sys/stat.h>
27#include <sys/syscall.h>
28#include <sys/sysmacros.h>
29#include <sys/time.h>
30#include <sys/wait.h>
31#include <dirent.h>
32#include <errno.h>
33#include <fcntl.h>
34#include <poll.h>
35#include <sched.h>
36#include <signal.h>
37#include <stdarg.h>
38#include <stddef.h>
39#include <stdint.h>
40#include <unistd.h>
41#include <limits.h>
42#endif
43#endif
44
45#include "nolibc-test-linkage.h"
46
47/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
48#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
49#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
50
51/* will be used to test initialization of environ */
52static char **test_envp;
53
54/* will be used to test initialization of argv */
55static char **test_argv;
56
57/* will be used to test initialization of argc */
58static int test_argc;
59
60/* will be used by some test cases as readable file, please don't write it */
61static const char *argv0;
62
63/* will be used by constructor tests */
64static int constructor_test_value;
65
66/* definition of a series of tests */
67struct test {
68 const char *name; /* test name */
69 int (*func)(int min, int max); /* handler */
70};
71
72#ifndef _NOLIBC_STDLIB_H
73char *itoa(int i)
74{
75 static char buf[12];
76 int ret;
77
78 ret = snprintf(buf, sizeof(buf), "%d", i);
79 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
80}
81#endif
82
83#define CASE_ERR(err) \
84 case err: return #err
85
86/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
87 * or the decimal value for less common ones.
88 */
89static const char *errorname(int err)
90{
91 switch (err) {
92 case 0: return "SUCCESS";
93 CASE_ERR(EPERM);
94 CASE_ERR(ENOENT);
95 CASE_ERR(ESRCH);
96 CASE_ERR(EINTR);
97 CASE_ERR(EIO);
98 CASE_ERR(ENXIO);
99 CASE_ERR(E2BIG);
100 CASE_ERR(ENOEXEC);
101 CASE_ERR(EBADF);
102 CASE_ERR(ECHILD);
103 CASE_ERR(EAGAIN);
104 CASE_ERR(ENOMEM);
105 CASE_ERR(EACCES);
106 CASE_ERR(EFAULT);
107 CASE_ERR(ENOTBLK);
108 CASE_ERR(EBUSY);
109 CASE_ERR(EEXIST);
110 CASE_ERR(EXDEV);
111 CASE_ERR(ENODEV);
112 CASE_ERR(ENOTDIR);
113 CASE_ERR(EISDIR);
114 CASE_ERR(EINVAL);
115 CASE_ERR(ENFILE);
116 CASE_ERR(EMFILE);
117 CASE_ERR(ENOTTY);
118 CASE_ERR(ETXTBSY);
119 CASE_ERR(EFBIG);
120 CASE_ERR(ENOSPC);
121 CASE_ERR(ESPIPE);
122 CASE_ERR(EROFS);
123 CASE_ERR(EMLINK);
124 CASE_ERR(EPIPE);
125 CASE_ERR(EDOM);
126 CASE_ERR(ERANGE);
127 CASE_ERR(ENOSYS);
128 CASE_ERR(EOVERFLOW);
129 default:
130 return itoa(err);
131 }
132}
133
134static void align_result(size_t llen)
135{
136 const size_t align = 64;
137 char buf[align];
138 size_t n;
139
140 if (llen >= align)
141 return;
142
143 n = align - llen;
144 memset(buf, ' ', n);
145 buf[n] = '\0';
146 fputs(buf, stdout);
147}
148
149enum RESULT {
150 OK,
151 FAIL,
152 SKIPPED,
153};
154
155static void result(int llen, enum RESULT r)
156{
157 const char *msg;
158
159 if (r == OK)
160 msg = " [OK]";
161 else if (r == SKIPPED)
162 msg = "[SKIPPED]";
163 else
164 msg = " [FAIL]";
165
166 align_result(llen);
167 puts(msg);
168}
169
170/* The tests below are intended to be used by the macroes, which evaluate
171 * expression <expr>, print the status to stdout, and update the "ret"
172 * variable to count failures. The functions themselves return the number
173 * of failures, thus either 0 or 1.
174 */
175
176#define EXPECT_ZR(cond, expr) \
177 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
178
179static __attribute__((unused))
180int expect_zr(int expr, int llen)
181{
182 int ret = !(expr == 0);
183
184 llen += printf(" = %d ", expr);
185 result(llen, ret ? FAIL : OK);
186 return ret;
187}
188
189
190#define EXPECT_NZ(cond, expr, val) \
191 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)
192
193static __attribute__((unused))
194int expect_nz(int expr, int llen)
195{
196 int ret = !(expr != 0);
197
198 llen += printf(" = %d ", expr);
199 result(llen, ret ? FAIL : OK);
200 return ret;
201}
202
203
204#define EXPECT_EQ(cond, expr, val) \
205 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
206
207static __attribute__((unused))
208int expect_eq(uint64_t expr, int llen, uint64_t val)
209{
210 int ret = !(expr == val);
211
212 llen += printf(" = %lld ", (long long)expr);
213 result(llen, ret ? FAIL : OK);
214 return ret;
215}
216
217
218#define EXPECT_NE(cond, expr, val) \
219 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
220
221static __attribute__((unused))
222int expect_ne(int expr, int llen, int val)
223{
224 int ret = !(expr != val);
225
226 llen += printf(" = %d ", expr);
227 result(llen, ret ? FAIL : OK);
228 return ret;
229}
230
231
232#define EXPECT_GE(cond, expr, val) \
233 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
234
235static __attribute__((unused))
236int expect_ge(int expr, int llen, int val)
237{
238 int ret = !(expr >= val);
239
240 llen += printf(" = %d ", expr);
241 result(llen, ret ? FAIL : OK);
242 return ret;
243}
244
245
246#define EXPECT_GT(cond, expr, val) \
247 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
248
249static __attribute__((unused))
250int expect_gt(int expr, int llen, int val)
251{
252 int ret = !(expr > val);
253
254 llen += printf(" = %d ", expr);
255 result(llen, ret ? FAIL : OK);
256 return ret;
257}
258
259
260#define EXPECT_LE(cond, expr, val) \
261 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
262
263static __attribute__((unused))
264int expect_le(int expr, int llen, int val)
265{
266 int ret = !(expr <= val);
267
268 llen += printf(" = %d ", expr);
269 result(llen, ret ? FAIL : OK);
270 return ret;
271}
272
273
274#define EXPECT_LT(cond, expr, val) \
275 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
276
277static __attribute__((unused))
278int expect_lt(int expr, int llen, int val)
279{
280 int ret = !(expr < val);
281
282 llen += printf(" = %d ", expr);
283 result(llen, ret ? FAIL : OK);
284 return ret;
285}
286
287
288#define EXPECT_SYSZR(cond, expr) \
289 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
290
291static __attribute__((unused))
292int expect_syszr(int expr, int llen)
293{
294 int ret = 0;
295
296 if (expr) {
297 ret = 1;
298 llen += printf(" = %d %s ", expr, errorname(errno));
299 result(llen, FAIL);
300 } else {
301 llen += printf(" = %d ", expr);
302 result(llen, OK);
303 }
304 return ret;
305}
306
307
308#define EXPECT_SYSEQ(cond, expr, val) \
309 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
310
311static __attribute__((unused))
312int expect_syseq(int expr, int llen, int val)
313{
314 int ret = 0;
315
316 if (expr != val) {
317 ret = 1;
318 llen += printf(" = %d %s ", expr, errorname(errno));
319 result(llen, FAIL);
320 } else {
321 llen += printf(" = %d ", expr);
322 result(llen, OK);
323 }
324 return ret;
325}
326
327
328#define EXPECT_SYSNE(cond, expr, val) \
329 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
330
331static __attribute__((unused))
332int expect_sysne(int expr, int llen, int val)
333{
334 int ret = 0;
335
336 if (expr == val) {
337 ret = 1;
338 llen += printf(" = %d %s ", expr, errorname(errno));
339 result(llen, FAIL);
340 } else {
341 llen += printf(" = %d ", expr);
342 result(llen, OK);
343 }
344 return ret;
345}
346
347
348#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
349 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
350
351#define EXPECT_SYSER(cond, expr, expret, experr) \
352 EXPECT_SYSER2(cond, expr, expret, experr, 0)
353
354static __attribute__((unused))
355int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
356{
357 int ret = 0;
358 int _errno = errno;
359
360 llen += printf(" = %d %s ", expr, errorname(_errno));
361 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
362 ret = 1;
363 if (experr2 == 0)
364 llen += printf(" != (%d %s) ", expret, errorname(experr1));
365 else
366 llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
367 result(llen, FAIL);
368 } else {
369 result(llen, OK);
370 }
371 return ret;
372}
373
374
375#define EXPECT_PTRZR(cond, expr) \
376 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
377
378static __attribute__((unused))
379int expect_ptrzr(const void *expr, int llen)
380{
381 int ret = 0;
382
383 llen += printf(" = <%p> ", expr);
384 if (expr) {
385 ret = 1;
386 result(llen, FAIL);
387 } else {
388 result(llen, OK);
389 }
390 return ret;
391}
392
393
394#define EXPECT_PTRNZ(cond, expr) \
395 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
396
397static __attribute__((unused))
398int expect_ptrnz(const void *expr, int llen)
399{
400 int ret = 0;
401
402 llen += printf(" = <%p> ", expr);
403 if (!expr) {
404 ret = 1;
405 result(llen, FAIL);
406 } else {
407 result(llen, OK);
408 }
409 return ret;
410}
411
412#define EXPECT_PTREQ(cond, expr, cmp) \
413 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
414
415static __attribute__((unused))
416int expect_ptreq(const void *expr, int llen, const void *cmp)
417{
418 int ret = 0;
419
420 llen += printf(" = <%p> ", expr);
421 if (expr != cmp) {
422 ret = 1;
423 result(llen, FAIL);
424 } else {
425 result(llen, OK);
426 }
427 return ret;
428}
429
430#define EXPECT_PTRNE(cond, expr, cmp) \
431 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
432
433static __attribute__((unused))
434int expect_ptrne(const void *expr, int llen, const void *cmp)
435{
436 int ret = 0;
437
438 llen += printf(" = <%p> ", expr);
439 if (expr == cmp) {
440 ret = 1;
441 result(llen, FAIL);
442 } else {
443 result(llen, OK);
444 }
445 return ret;
446}
447
448#define EXPECT_PTRGE(cond, expr, cmp) \
449 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
450
451static __attribute__((unused))
452int expect_ptrge(const void *expr, int llen, const void *cmp)
453{
454 int ret = !(expr >= cmp);
455
456 llen += printf(" = <%p> ", expr);
457 result(llen, ret ? FAIL : OK);
458 return ret;
459}
460
461#define EXPECT_PTRGT(cond, expr, cmp) \
462 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
463
464static __attribute__((unused))
465int expect_ptrgt(const void *expr, int llen, const void *cmp)
466{
467 int ret = !(expr > cmp);
468
469 llen += printf(" = <%p> ", expr);
470 result(llen, ret ? FAIL : OK);
471 return ret;
472}
473
474
475#define EXPECT_PTRLE(cond, expr, cmp) \
476 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
477
478static __attribute__((unused))
479int expect_ptrle(const void *expr, int llen, const void *cmp)
480{
481 int ret = !(expr <= cmp);
482
483 llen += printf(" = <%p> ", expr);
484 result(llen, ret ? FAIL : OK);
485 return ret;
486}
487
488
489#define EXPECT_PTRLT(cond, expr, cmp) \
490 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
491
492static __attribute__((unused))
493int expect_ptrlt(const void *expr, int llen, const void *cmp)
494{
495 int ret = !(expr < cmp);
496
497 llen += printf(" = <%p> ", expr);
498 result(llen, ret ? FAIL : OK);
499 return ret;
500}
501
502#define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
503 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
504
505#define EXPECT_PTRER(cond, expr, expret, experr) \
506 EXPECT_PTRER2(cond, expr, expret, experr, 0)
507
508static __attribute__((unused))
509int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
510{
511 int ret = 0;
512 int _errno = errno;
513
514 llen += printf(" = <%p> %s ", expr, errorname(_errno));
515 if (expr != expret || (_errno != experr1 && _errno != experr2)) {
516 ret = 1;
517 if (experr2 == 0)
518 llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
519 else
520 llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
521 result(llen, FAIL);
522 } else {
523 result(llen, OK);
524 }
525 return ret;
526}
527
528#define EXPECT_STRZR(cond, expr) \
529 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
530
531static __attribute__((unused))
532int expect_strzr(const char *expr, int llen)
533{
534 int ret = 0;
535
536 llen += printf(" = <%s> ", expr);
537 if (expr) {
538 ret = 1;
539 result(llen, FAIL);
540 } else {
541 result(llen, OK);
542 }
543 return ret;
544}
545
546
547#define EXPECT_STRNZ(cond, expr) \
548 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
549
550static __attribute__((unused))
551int expect_strnz(const char *expr, int llen)
552{
553 int ret = 0;
554
555 llen += printf(" = <%s> ", expr);
556 if (!expr) {
557 ret = 1;
558 result(llen, FAIL);
559 } else {
560 result(llen, OK);
561 }
562 return ret;
563}
564
565
566#define EXPECT_STREQ(cond, expr, cmp) \
567 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
568
569static __attribute__((unused))
570int expect_streq(const char *expr, int llen, const char *cmp)
571{
572 int ret = 0;
573
574 llen += printf(" = <%s> ", expr);
575 if (strcmp(expr, cmp) != 0) {
576 ret = 1;
577 result(llen, FAIL);
578 } else {
579 result(llen, OK);
580 }
581 return ret;
582}
583
584
585#define EXPECT_STRNE(cond, expr, cmp) \
586 do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
587
588static __attribute__((unused))
589int expect_strne(const char *expr, int llen, const char *cmp)
590{
591 int ret = 0;
592
593 llen += printf(" = <%s> ", expr);
594 if (strcmp(expr, cmp) == 0) {
595 ret = 1;
596 result(llen, FAIL);
597 } else {
598 result(llen, OK);
599 }
600 return ret;
601}
602
603
604/* declare tests based on line numbers. There must be exactly one test per line. */
605#define CASE_TEST(name) \
606 case __LINE__: llen += printf("%d %s", test, #name);
607
608/* constructors validate that they are executed in definition order */
609__attribute__((constructor))
610static void constructor1(void)
611{
612 constructor_test_value = 1;
613}
614
615__attribute__((constructor))
616static void constructor2(void)
617{
618 constructor_test_value *= 2;
619}
620
621int run_startup(int min, int max)
622{
623 int test;
624 int ret = 0;
625 /* kernel at least passes HOME and TERM, shell passes more */
626 int env_total = 2;
627 /* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
628 extern char end;
629 char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
630 /* differ from nolibc, both glibc and musl have no global _auxv */
631 const unsigned long *test_auxv = (void *)-1;
632#ifdef NOLIBC
633 test_auxv = _auxv;
634#endif
635
636 for (test = min; test >= 0 && test <= max; test++) {
637 int llen = 0; /* line length */
638
639 /* avoid leaving empty lines below, this will insert holes into
640 * test numbers.
641 */
642 switch (test + __LINE__ + 1) {
643 CASE_TEST(argc); EXPECT_GE(1, test_argc, 1); break;
644 CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
645 CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
646 CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
647 CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
648 CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
649 CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
650 CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
651 CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
652 CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
653 CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
654 CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
655 CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
656 CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
657 CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;
658 CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
659 CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;
660 case __LINE__:
661 return ret; /* must be last */
662 /* note: do not set any defaults so as to permit holes above */
663 }
664 }
665 return ret;
666}
667
668
669/* used by some syscall tests below */
670int test_getdents64(const char *dir)
671{
672 char buffer[4096];
673 int fd, ret;
674 int err;
675
676 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
677 if (ret < 0)
678 return ret;
679
680 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
681 err = errno;
682 close(fd);
683
684 errno = err;
685 return ret;
686}
687
688int test_getpagesize(void)
689{
690 int x = getpagesize();
691 int c;
692
693 if (x < 0)
694 return x;
695
696#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
697 /*
698 * x86 family is always 4K page.
699 */
700 c = (x == 4096);
701#elif defined(__aarch64__)
702 /*
703 * Linux aarch64 supports three values of page size: 4K, 16K, and 64K
704 * which are selected at kernel compilation time.
705 */
706 c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
707#else
708 /*
709 * Assuming other architectures must have at least 4K page.
710 */
711 c = (x >= 4096);
712#endif
713
714 return !c;
715}
716
717int test_fork(void)
718{
719 int status;
720 pid_t pid;
721
722 /* flush the printf buffer to avoid child flush it */
723 fflush(stdout);
724 fflush(stderr);
725
726 pid = fork();
727
728 switch (pid) {
729 case -1:
730 return 1;
731
732 case 0:
733 exit(123);
734
735 default:
736 pid = waitpid(pid, &status, 0);
737
738 return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
739 }
740}
741
742int test_stat_timestamps(void)
743{
744 struct stat st;
745
746 if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
747 return 1;
748
749 if (stat("/proc/self/", &st) && stat(argv0, &st) && stat("/", &st))
750 return 1;
751
752 if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
753 return 1;
754
755 if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
756 return 1;
757
758 if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
759 return 1;
760
761 return 0;
762}
763
764int test_mmap_munmap(void)
765{
766 int ret, fd, i, page_size;
767 void *mem;
768 size_t file_size, length;
769 off_t offset, pa_offset;
770 struct stat stat_buf;
771 const char * const files[] = {
772 "/dev/zero",
773 "/proc/1/exe", "/proc/self/exe",
774 argv0,
775 NULL
776 };
777
778 page_size = getpagesize();
779 if (page_size < 0)
780 return 1;
781
782 /* find a right file to mmap, existed and accessible */
783 for (i = 0; files[i] != NULL; i++) {
784 ret = fd = open(files[i], O_RDONLY);
785 if (ret == -1)
786 continue;
787 else
788 break;
789 }
790 if (ret == -1)
791 return 1;
792
793 ret = stat(files[i], &stat_buf);
794 if (ret == -1)
795 goto end;
796
797 /* file size of the special /dev/zero is 0, let's assign one manually */
798 if (i == 0)
799 file_size = 3*page_size;
800 else
801 file_size = stat_buf.st_size;
802
803 offset = file_size - 1;
804 if (offset < 0)
805 offset = 0;
806 length = file_size - offset;
807 pa_offset = offset & ~(page_size - 1);
808
809 mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
810 if (mem == MAP_FAILED) {
811 ret = 1;
812 goto end;
813 }
814
815 ret = munmap(mem, length + offset - pa_offset);
816
817end:
818 close(fd);
819 return !!ret;
820}
821
822int test_pipe(void)
823{
824 const char *const msg = "hello, nolibc";
825 int pipefd[2];
826 char buf[32];
827 size_t len;
828
829 if (pipe(pipefd) == -1)
830 return 1;
831
832 write(pipefd[1], msg, strlen(msg));
833 close(pipefd[1]);
834 len = read(pipefd[0], buf, sizeof(buf));
835 close(pipefd[0]);
836
837 if (len != strlen(msg))
838 return 1;
839
840 return !!memcmp(buf, msg, len);
841}
842
843int test_rlimit(void)
844{
845 struct rlimit rlim = {
846 .rlim_cur = 1 << 20,
847 .rlim_max = 1 << 21,
848 };
849 int ret;
850
851 ret = setrlimit(RLIMIT_CORE, &rlim);
852 if (ret)
853 return -1;
854
855 rlim.rlim_cur = 0;
856 rlim.rlim_max = 0;
857
858 ret = getrlimit(RLIMIT_CORE, &rlim);
859 if (ret)
860 return -1;
861
862 if (rlim.rlim_cur != 1 << 20)
863 return -1;
864 if (rlim.rlim_max != 1 << 21)
865 return -1;
866
867 return 0;
868}
869
870
871/* Run syscall tests between IDs <min> and <max>.
872 * Return 0 on success, non-zero on failure.
873 */
874int run_syscall(int min, int max)
875{
876 struct timeval tv;
877 struct timezone tz;
878 struct stat stat_buf;
879 int euid0;
880 int proc;
881 int test;
882 int tmp;
883 int ret = 0;
884 void *p1, *p2;
885 int has_gettid = 1;
886
887 /* <proc> indicates whether or not /proc is mounted */
888 proc = stat("/proc", &stat_buf) == 0;
889
890 /* this will be used to skip certain tests that can't be run unprivileged */
891 euid0 = geteuid() == 0;
892
893 /* from 2.30, glibc provides gettid() */
894#if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
895 has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
896#endif
897
898 for (test = min; test >= 0 && test <= max; test++) {
899 int llen = 0; /* line length */
900
901 /* avoid leaving empty lines below, this will insert holes into
902 * test numbers.
903 */
904 switch (test + __LINE__ + 1) {
905 CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
906 CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
907 CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
908 CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
909 CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
910 CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
911 CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
912 CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
913 CASE_TEST(sbrk_0); EXPECT_PTRNE(1, sbrk(0), (void *)-1); break;
914 CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
915 CASE_TEST(brk); EXPECT_SYSZR(1, brk(sbrk(0))); break;
916 CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
917 CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
918 CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
919 CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
920 CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
921 CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
922 CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
923 CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
924 CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
925 CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
926 CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
927 CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
928 CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
929 CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
930 CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
931 CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
932 CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
933 CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
934 CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
935 CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
936 CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
937 CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
938 CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
939 CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
940 CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
941 CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
942 CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
943 CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
944 CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
945 CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
946 CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
947 CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
948 CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
949 CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
950 CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
951 CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
952 CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
953 CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
954 CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
955 CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
956 CASE_TEST(poll_fault); EXPECT_SYSER(1, poll(NULL, 1, 0), -1, EFAULT); break;
957 CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
958 CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
959 CASE_TEST(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
960 CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); break;
961 CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
962 CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
963 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;
964 CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
965 CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
966 CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
967 CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
968 CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
969 CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
970 CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
971 CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
972 CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
973 CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
974 CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
975 CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
976 CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
977 CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
978 case __LINE__:
979 return ret; /* must be last */
980 /* note: do not set any defaults so as to permit holes above */
981 }
982 }
983 return ret;
984}
985
986int run_stdlib(int min, int max)
987{
988 int test;
989 int ret = 0;
990
991 for (test = min; test >= 0 && test <= max; test++) {
992 int llen = 0; /* line length */
993
994 /* avoid leaving empty lines below, this will insert holes into
995 * test numbers.
996 */
997 switch (test + __LINE__ + 1) {
998 CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
999 CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
1000 CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
1001 CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
1002 CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
1003 CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
1004 CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
1005 CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
1006 CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
1007 CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
1008 CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
1009 CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
1010 CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
1011 CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
1012 CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
1013 CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
1014 CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
1015 CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
1016 CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
1017 CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
1018 CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
1019 CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
1020 CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
1021 CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
1022 CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
1023 CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
1024 CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
1025 CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
1026 CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
1027 CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
1028 CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
1029 CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
1030 CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
1031 CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
1032 CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
1033 CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
1034 CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
1035 CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
1036 CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
1037 CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
1038 CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
1039 CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
1040 CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
1041 CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
1042 CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
1043 CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
1044 CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
1045 CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
1046 CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
1047 CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
1048 CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); break;
1049 CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
1050 CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
1051 CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
1052 CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
1053 CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
1054 CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
1055 CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
1056 CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
1057 CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
1058 CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
1059 CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
1060
1061 case __LINE__:
1062 return ret; /* must be last */
1063 /* note: do not set any defaults so as to permit holes above */
1064 }
1065 }
1066 return ret;
1067}
1068
1069#define EXPECT_VFPRINTF(c, expected, fmt, ...) \
1070 ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
1071
1072static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
1073{
1074 int ret, fd;
1075 ssize_t w, r;
1076 char buf[100];
1077 FILE *memfile;
1078 va_list args;
1079
1080 fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);
1081 if (fd == -1) {
1082 result(llen, SKIPPED);
1083 return 0;
1084 }
1085
1086 memfile = fdopen(fd, "w+");
1087 if (!memfile) {
1088 result(llen, FAIL);
1089 return 1;
1090 }
1091
1092 va_start(args, fmt);
1093 w = vfprintf(memfile, fmt, args);
1094 va_end(args);
1095
1096 if (w != c) {
1097 llen += printf(" written(%d) != %d", (int)w, c);
1098 result(llen, FAIL);
1099 return 1;
1100 }
1101
1102 fflush(memfile);
1103 lseek(fd, 0, SEEK_SET);
1104
1105 r = read(fd, buf, sizeof(buf) - 1);
1106
1107 fclose(memfile);
1108
1109 if (r != w) {
1110 llen += printf(" written(%d) != read(%d)", (int)w, (int)r);
1111 result(llen, FAIL);
1112 return 1;
1113 }
1114
1115 buf[r] = '\0';
1116 llen += printf(" \"%s\" = \"%s\"", expected, buf);
1117 ret = strncmp(expected, buf, c);
1118
1119 result(llen, ret ? FAIL : OK);
1120 return ret;
1121}
1122
1123static int run_vfprintf(int min, int max)
1124{
1125 int test;
1126 int ret = 0;
1127
1128 for (test = min; test >= 0 && test <= max; test++) {
1129 int llen = 0; /* line length */
1130
1131 /* avoid leaving empty lines below, this will insert holes into
1132 * test numbers.
1133 */
1134 switch (test + __LINE__ + 1) {
1135 CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
1136 CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
1137 CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
1138 CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
1139 CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
1140 CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
1141 CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
1142 CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
1143 CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
1144 case __LINE__:
1145 return ret; /* must be last */
1146 /* note: do not set any defaults so as to permit holes above */
1147 }
1148 }
1149 return ret;
1150}
1151
1152static int smash_stack(void)
1153{
1154 char buf[100];
1155 volatile char *ptr = buf;
1156 size_t i;
1157
1158 for (i = 0; i < 200; i++)
1159 ptr[i] = 'P';
1160
1161 return 1;
1162}
1163
1164static int run_protection(int min __attribute__((unused)),
1165 int max __attribute__((unused)))
1166{
1167 pid_t pid;
1168 int llen = 0, status;
1169 struct rlimit rlimit = { 0, 0 };
1170
1171 llen += printf("0 -fstackprotector ");
1172
1173#if !defined(_NOLIBC_STACKPROTECTOR)
1174 llen += printf("not supported");
1175 result(llen, SKIPPED);
1176 return 0;
1177#endif
1178
1179#if defined(_NOLIBC_STACKPROTECTOR)
1180 if (!__stack_chk_guard) {
1181 llen += printf("__stack_chk_guard not initialized");
1182 result(llen, FAIL);
1183 return 1;
1184 }
1185#endif
1186
1187 pid = -1;
1188 pid = fork();
1189
1190 switch (pid) {
1191 case -1:
1192 llen += printf("fork()");
1193 result(llen, FAIL);
1194 return 1;
1195
1196 case 0:
1197 close(STDOUT_FILENO);
1198 close(STDERR_FILENO);
1199
1200 prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
1201 setrlimit(RLIMIT_CORE, &rlimit);
1202 smash_stack();
1203 return 1;
1204
1205 default:
1206 pid = waitpid(pid, &status, 0);
1207
1208 if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
1209 llen += printf("waitpid()");
1210 result(llen, FAIL);
1211 return 1;
1212 }
1213 result(llen, OK);
1214 return 0;
1215 }
1216}
1217
1218/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
1219int prepare(void)
1220{
1221 struct stat stat_buf;
1222
1223 /* It's possible that /dev doesn't even exist or was not mounted, so
1224 * we'll try to create it, mount it, or create minimal entries into it.
1225 * We want at least /dev/null and /dev/console.
1226 */
1227 if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
1228 if (stat("/dev/console", &stat_buf) != 0 ||
1229 stat("/dev/null", &stat_buf) != 0 ||
1230 stat("/dev/zero", &stat_buf) != 0) {
1231 /* try devtmpfs first, otherwise fall back to manual creation */
1232 if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
1233 mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
1234 mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
1235 mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
1236 }
1237 }
1238 }
1239
1240 /* If no /dev/console was found before calling init, stdio is closed so
1241 * we need to reopen it from /dev/console. If it failed above, it will
1242 * still fail here and we cannot emit a message anyway.
1243 */
1244 if (close(dup(1)) == -1) {
1245 int fd = open("/dev/console", O_RDWR);
1246
1247 if (fd >= 0) {
1248 if (fd != 0)
1249 dup2(fd, 0);
1250 if (fd != 1)
1251 dup2(fd, 1);
1252 if (fd != 2)
1253 dup2(fd, 2);
1254 if (fd > 2)
1255 close(fd);
1256 puts("\nSuccessfully reopened /dev/console.");
1257 }
1258 }
1259
1260 /* try to mount /proc if not mounted. Silently fail otherwise */
1261 if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
1262 if (stat("/proc/self", &stat_buf) != 0) {
1263 /* If not mountable, remove /proc completely to avoid misuse */
1264 if (mount("none", "/proc", "proc", 0, 0) != 0)
1265 rmdir("/proc");
1266 }
1267 }
1268
1269 /* some tests rely on a writable /tmp */
1270 mkdir("/tmp", 0755);
1271
1272 return 0;
1273}
1274
1275/* This is the definition of known test names, with their functions */
1276static const struct test test_names[] = {
1277 /* add new tests here */
1278 { .name = "startup", .func = run_startup },
1279 { .name = "syscall", .func = run_syscall },
1280 { .name = "stdlib", .func = run_stdlib },
1281 { .name = "vfprintf", .func = run_vfprintf },
1282 { .name = "protection", .func = run_protection },
1283 { 0 }
1284};
1285
1286static int is_setting_valid(char *test)
1287{
1288 int idx, len, test_len, valid = 0;
1289 char delimiter;
1290
1291 if (!test)
1292 return valid;
1293
1294 test_len = strlen(test);
1295
1296 for (idx = 0; test_names[idx].name; idx++) {
1297 len = strlen(test_names[idx].name);
1298 if (test_len < len)
1299 continue;
1300
1301 if (strncmp(test, test_names[idx].name, len) != 0)
1302 continue;
1303
1304 delimiter = test[len];
1305 if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
1306 continue;
1307
1308 valid = 1;
1309 break;
1310 }
1311
1312 return valid;
1313}
1314
1315int main(int argc, char **argv, char **envp)
1316{
1317 int min = 0;
1318 int max = INT_MAX;
1319 int ret = 0;
1320 int err;
1321 int idx;
1322 char *test;
1323
1324 argv0 = argv[0];
1325 test_argc = argc;
1326 test_argv = argv;
1327 test_envp = envp;
1328
1329 /* when called as init, it's possible that no console was opened, for
1330 * example if no /dev file system was provided. We'll check that fd#1
1331 * was opened, and if not we'll attempt to create and open /dev/console
1332 * and /dev/null that we'll use for later tests.
1333 */
1334 if (getpid() == 1)
1335 prepare();
1336
1337 /* the definition of a series of tests comes from either argv[1] or the
1338 * "NOLIBC_TEST" environment variable. It's made of a comma-delimited
1339 * series of test names and optional ranges:
1340 * syscall:5-15[:.*],stdlib:8-10
1341 */
1342 test = argv[1];
1343 if (!is_setting_valid(test))
1344 test = getenv("NOLIBC_TEST");
1345
1346 if (is_setting_valid(test)) {
1347 char *comma, *colon, *dash, *value;
1348
1349 do {
1350 comma = strchr(test, ',');
1351 if (comma)
1352 *(comma++) = '\0';
1353
1354 colon = strchr(test, ':');
1355 if (colon)
1356 *(colon++) = '\0';
1357
1358 for (idx = 0; test_names[idx].name; idx++) {
1359 if (strcmp(test, test_names[idx].name) == 0)
1360 break;
1361 }
1362
1363 if (test_names[idx].name) {
1364 /* The test was named, it will be called at least
1365 * once. We may have an optional range at <colon>
1366 * here, which defaults to the full range.
1367 */
1368 do {
1369 min = 0; max = INT_MAX;
1370 value = colon;
1371 if (value && *value) {
1372 colon = strchr(value, ':');
1373 if (colon)
1374 *(colon++) = '\0';
1375
1376 dash = strchr(value, '-');
1377 if (dash)
1378 *(dash++) = '\0';
1379
1380 /* support :val: :min-max: :min-: :-max: */
1381 if (*value)
1382 min = atoi(value);
1383 if (!dash)
1384 max = min;
1385 else if (*dash)
1386 max = atoi(dash);
1387
1388 value = colon;
1389 }
1390
1391 /* now's time to call the test */
1392 printf("Running test '%s'\n", test_names[idx].name);
1393 err = test_names[idx].func(min, max);
1394 ret += err;
1395 printf("Errors during this test: %d\n\n", err);
1396 } while (colon && *colon);
1397 } else
1398 printf("Ignoring unknown test name '%s'\n", test);
1399
1400 test = comma;
1401 } while (test && *test);
1402 } else {
1403 /* no test mentioned, run everything */
1404 for (idx = 0; test_names[idx].name; idx++) {
1405 printf("Running test '%s'\n", test_names[idx].name);
1406 err = test_names[idx].func(min, max);
1407 ret += err;
1408 printf("Errors during this test: %d\n\n", err);
1409 }
1410 }
1411
1412 printf("Total number of errors: %d\n", ret);
1413
1414 if (getpid() == 1) {
1415 /* we're running as init, there's no other process on the
1416 * system, thus likely started from a VM for a quick check.
1417 * Exiting will provoke a kernel panic that may be reported
1418 * as an error by Qemu or the hypervisor, while stopping
1419 * cleanly will often be reported as a success. This allows
1420 * to use the output of this program for bisecting kernels.
1421 */
1422 printf("Leaving init with final status: %d\n", !!ret);
1423 if (ret == 0)
1424 reboot(RB_POWER_OFF);
1425#if defined(__x86_64__)
1426 /* QEMU started with "-device isa-debug-exit -no-reboot" will
1427 * exit with status code 2N+1 when N is written to 0x501. We
1428 * hard-code the syscall here as it's arch-dependent.
1429 */
1430 else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
1431 __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
1432 /* if it does nothing, fall back to the regular panic */
1433#endif
1434 }
1435
1436 printf("Exiting with status %d\n", !!ret);
1437 return !!ret;
1438}