1 // SPDX-License-Identifier: GPL-2.0
5 /* platform-specific include files coming from the compiler */
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
18 #ifndef _NOLIBC_STDIO_H
19 /* standard libcs need more includes */
20 #include <linux/reboot.h>
22 #include <sys/ioctl.h>
23 #include <sys/mount.h>
24 #include <sys/reboot.h>
26 #include <sys/syscall.h>
27 #include <sys/sysmacros.h>
41 /* will be used by nolibc by getenv() */
44 /* definition of a series of tests */
46 const char *name; // test name
47 int (*func)(int min, int max); // handler
50 #ifndef _NOLIBC_STDLIB_H
56 ret = snprintf(buf, sizeof(buf), "%d", i);
57 return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
61 #define CASE_ERR(err) \
64 /* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
65 * or the decimal value for less common ones.
67 const char *errorname(int err)
70 case 0: return "SUCCESS";
111 static int pad_spc(int llen, int cnt, const char *fmt, ...)
117 for (len = 0; len < cnt - llen; len++)
121 ret = vfprintf(stdout, fmt, args);
123 return ret < 0 ? ret : ret + len;
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.
132 #define EXPECT_ZR(cond, expr) \
133 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_zr(expr, llen); } while (0)
135 static int expect_zr(int expr, int llen)
137 int ret = !(expr == 0);
139 llen += printf(" = %d ", expr);
140 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
148 static int expect_nz(int expr, int llen)
150 int ret = !(expr != 0);
152 llen += printf(" = %d ", expr);
153 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
161 static int expect_eq(int expr, int llen, int val)
163 int ret = !(expr == val);
165 llen += printf(" = %d ", expr);
166 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
174 static int expect_ne(int expr, int llen, int val)
176 int ret = !(expr != val);
178 llen += printf(" = %d ", expr);
179 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
187 static int expect_ge(int expr, int llen, int val)
189 int ret = !(expr >= val);
191 llen += printf(" = %d ", expr);
192 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
200 static int expect_gt(int expr, int llen, int val)
202 int ret = !(expr > val);
204 llen += printf(" = %d ", expr);
205 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
213 static int expect_le(int expr, int llen, int val)
215 int ret = !(expr <= val);
217 llen += printf(" = %d ", expr);
218 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
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)
226 static int expect_lt(int expr, int llen, int val)
228 int ret = !(expr < val);
230 llen += printf(" = %d ", expr);
231 pad_spc(llen, 40, ret ? "[FAIL]\n" : " [OK]\n");
236 #define EXPECT_SYSZR(cond, expr) \
237 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_syszr(expr, llen); } while (0)
239 static int expect_syszr(int expr, int llen)
245 llen += printf(" = %d %s ", expr, errorname(errno));
246 llen += pad_spc(llen, 40, "[FAIL]\n");
248 llen += printf(" = %d ", expr);
249 llen += pad_spc(llen, 40, " [OK]\n");
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)
258 static int expect_syseq(int expr, int llen, int val)
264 llen += printf(" = %d %s ", expr, errorname(errno));
265 llen += pad_spc(llen, 40, "[FAIL]\n");
267 llen += printf(" = %d ", expr);
268 llen += pad_spc(llen, 40, " [OK]\n");
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)
277 static int expect_sysne(int expr, int llen, int val)
283 llen += printf(" = %d %s ", expr, errorname(errno));
284 llen += pad_spc(llen, 40, "[FAIL]\n");
286 llen += printf(" = %d ", expr);
287 llen += pad_spc(llen, 40, " [OK]\n");
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)
296 static int expect_syserr(int expr, int expret, int experr, int llen)
301 llen += printf(" = %d %s ", expr, errorname(_errno));
302 if (expr != expret || _errno != experr) {
304 llen += printf(" != (%d %s) ", expret, errorname(experr));
305 llen += pad_spc(llen, 40, "[FAIL]\n");
307 llen += pad_spc(llen, 40, " [OK]\n");
313 #define EXPECT_PTRZR(cond, expr) \
314 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrzr(expr, llen); } while (0)
316 static int expect_ptrzr(const void *expr, int llen)
320 llen += printf(" = <%p> ", expr);
323 llen += pad_spc(llen, 40, "[FAIL]\n");
325 llen += pad_spc(llen, 40, " [OK]\n");
331 #define EXPECT_PTRNZ(cond, expr) \
332 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_ptrnz(expr, llen); } while (0)
334 static int expect_ptrnz(const void *expr, int llen)
338 llen += printf(" = <%p> ", expr);
341 llen += pad_spc(llen, 40, "[FAIL]\n");
343 llen += pad_spc(llen, 40, " [OK]\n");
349 #define EXPECT_STRZR(cond, expr) \
350 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strzr(expr, llen); } while (0)
352 static int expect_strzr(const char *expr, int llen)
356 llen += printf(" = <%s> ", expr);
359 llen += pad_spc(llen, 40, "[FAIL]\n");
361 llen += pad_spc(llen, 40, " [OK]\n");
367 #define EXPECT_STRNZ(cond, expr) \
368 do { if (!cond) pad_spc(llen, 40, "[SKIPPED]\n"); else ret += expect_strnz(expr, llen); } while (0)
370 static int expect_strnz(const char *expr, int llen)
374 llen += printf(" = <%s> ", expr);
377 llen += pad_spc(llen, 40, "[FAIL]\n");
379 llen += pad_spc(llen, 40, " [OK]\n");
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)
388 static int expect_streq(const char *expr, int llen, const char *cmp)
392 llen += printf(" = <%s> ", expr);
393 if (strcmp(expr, cmp) != 0) {
395 llen += pad_spc(llen, 40, "[FAIL]\n");
397 llen += pad_spc(llen, 40, " [OK]\n");
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)
406 static int expect_strne(const char *expr, int llen, const char *cmp)
410 llen += printf(" = <%s> ", expr);
411 if (strcmp(expr, cmp) == 0) {
413 llen += pad_spc(llen, 40, "[FAIL]\n");
415 llen += pad_spc(llen, 40, " [OK]\n");
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);
426 /* used by some syscall tests below */
427 int test_getdents64(const char *dir)
433 ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
437 ret = getdents64(fd, (void *)buffer, sizeof(buffer));
445 /* Run syscall tests between IDs <min> and <max>.
446 * Return 0 on success, non-zero on failure.
448 int run_syscall(int min, int max)
450 struct stat stat_buf;
457 /* <proc> indicates whether or not /proc is mounted */
458 proc = stat("/proc", &stat_buf) == 0;
460 for (test = min; test >= 0 && test <= max; test++) {
461 int llen = 0; // line length
463 /* avoid leaving empty lines below, this will insert holes into
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;
470 CASE_TEST(gettid); EXPECT_SYSNE(1, gettid(), -1); break;
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;
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;
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;
535 return ret; /* must be last */
536 /* note: do not set any defaults so as to permit holes above */
542 int run_stdlib(int min, int max)
549 for (test = min; test >= 0 && test <= max; test++) {
550 int llen = 0; // line length
552 /* avoid leaving empty lines below, this will insert holes into
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;
576 return ret; /* must be last */
577 /* note: do not set any defaults so as to permit holes above */
583 /* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
586 struct stat stat_buf;
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.
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));
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.
607 if (close(dup(1)) == -1) {
608 int fd = open("/dev/console", O_RDWR);
619 puts("\nSuccessfully reopened /dev/console.");
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);
632 /* This is the definition of known test names, with their functions */
633 static struct test test_names[] = {
634 /* add new tests here */
635 { .name = "syscall", .func = run_syscall },
636 { .name = "stdlib", .func = run_stdlib },
640 int main(int argc, char **argv, char **envp)
643 int max = __INT_MAX__;
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.
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
666 test = getenv("NOLIBC_TEST");
669 char *comma, *colon, *dash, *value;
672 comma = strchr(test, ',');
676 colon = strchr(test, ':');
680 for (idx = 0; test_names[idx].name; idx++) {
681 if (strcmp(test, test_names[idx].name) == 0)
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.
691 min = 0; max = __INT_MAX__;
693 if (value && *value) {
694 colon = strchr(value, ':');
698 dash = strchr(value, '-');
702 /* support :val: :min-max: :min-: :-max: */
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);
717 printf("Errors during this test: %d\n\n", err);
718 } while (colon && *colon);
720 printf("Ignoring unknown test name '%s'\n", test);
723 } while (test && *test);
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);
730 printf("Errors during this test: %d\n\n", err);
734 printf("Total number of errors: %d\n", ret);
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.
744 printf("Leaving init with final status: %d\n", !!ret);
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.
752 #if defined(_NOLIBC_SYS_H)
753 else if (my_syscall3(__NR_ioperm, 0x501, 1, 1) == 0)
755 else if (ioperm(0x501, 1, 1) == 0)
757 asm volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
758 /* if it does nothing, fall back to the regular panic */
762 printf("Exiting with status %d\n", !!ret);