1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19#define _GNU_SOURCE
20#include <stdarg.h>
21#include <stdlib.h>
22#include <stdio.h>
23#include <unistd.h>
24#include <fcntl.h>
25#include <inttypes.h>
26#include <string.h>
27#include <sys/types.h>
28#include <sys/stat.h>
29#include <sys/wait.h>
30#include <errno.h>
31#include <utime.h>
32#include <time.h>
33#include <sys/time.h>
34#include <sys/uio.h>
35#include <sys/socket.h>
36#include <netinet/in.h>
37#include <arpa/inet.h>
38#include <sched.h>
39#include <dirent.h>
40#include <setjmp.h>
41#include <sys/shm.h>
42
43#define TESTPATH "/tmp/linux-test.tmp"
44#define TESTPORT 7654
45#define STACK_SIZE 16384
46
47void error1(const char *filename, int line, const char *fmt, ...)
48{
49 va_list ap;
50 va_start(ap, fmt);
51 fprintf(stderr, "%s:%d: ", filename, line);
52 vfprintf(stderr, fmt, ap);
53 fprintf(stderr, "\n");
54 va_end(ap);
55 exit(1);
56}
57
58int __chk_error(const char *filename, int line, int ret)
59{
60 if (ret < 0) {
61 error1(filename, line, "%m (ret=%d, errno=%d)",
62 ret, errno);
63 }
64 return ret;
65}
66
67#define error(fmt, ...) error1(__FILE__, __LINE__, fmt, ## __VA_ARGS__)
68
69#define chk_error(ret) __chk_error(__FILE__, __LINE__, (ret))
70
71
72
73#define FILE_BUF_SIZE 300
74
75void test_file(void)
76{
77 int fd, i, len, ret;
78 uint8_t buf[FILE_BUF_SIZE];
79 uint8_t buf2[FILE_BUF_SIZE];
80 uint8_t buf3[FILE_BUF_SIZE];
81 char cur_dir[1024];
82 struct stat st;
83 struct utimbuf tbuf;
84 struct iovec vecs[2];
85 DIR *dir;
86 struct dirent *de;
87
88
89 unlink(TESTPATH "/file1");
90 unlink(TESTPATH "/file2");
91 unlink(TESTPATH "/file3");
92 rmdir(TESTPATH);
93
94 if (getcwd(cur_dir, sizeof(cur_dir)) == NULL)
95 error("getcwd");
96
97 chk_error(mkdir(TESTPATH, 0755));
98
99 chk_error(chdir(TESTPATH));
100
101
102
103 fd = chk_error(open("file1", O_WRONLY | O_TRUNC | O_CREAT, 0644));
104 for(i=0;i < FILE_BUF_SIZE; i++)
105 buf[i] = i;
106 len = chk_error(write(fd, buf, FILE_BUF_SIZE / 2));
107 if (len != (FILE_BUF_SIZE / 2))
108 error("write");
109 vecs[0].iov_base = buf + (FILE_BUF_SIZE / 2);
110 vecs[0].iov_len = 16;
111 vecs[1].iov_base = buf + (FILE_BUF_SIZE / 2) + 16;
112 vecs[1].iov_len = (FILE_BUF_SIZE / 2) - 16;
113 len = chk_error(writev(fd, vecs, 2));
114 if (len != (FILE_BUF_SIZE / 2))
115 error("writev");
116 chk_error(close(fd));
117
118 chk_error(rename("file1", "file2"));
119
120 fd = chk_error(open("file2", O_RDONLY));
121
122 len = chk_error(read(fd, buf2, FILE_BUF_SIZE));
123 if (len != FILE_BUF_SIZE)
124 error("read");
125 if (memcmp(buf, buf2, FILE_BUF_SIZE) != 0)
126 error("memcmp");
127
128#define FOFFSET 16
129 ret = chk_error(lseek(fd, FOFFSET, SEEK_SET));
130 if (ret != 16)
131 error("lseek");
132 vecs[0].iov_base = buf3;
133 vecs[0].iov_len = 32;
134 vecs[1].iov_base = buf3 + 32;
135 vecs[1].iov_len = FILE_BUF_SIZE - FOFFSET - 32;
136 len = chk_error(readv(fd, vecs, 2));
137 if (len != FILE_BUF_SIZE - FOFFSET)
138 error("readv");
139 if (memcmp(buf + FOFFSET, buf3, FILE_BUF_SIZE - FOFFSET) != 0)
140 error("memcmp");
141
142 chk_error(close(fd));
143
144
145 chk_error(access("file2", R_OK));
146
147
148
149 chk_error(chmod("file2", 0600));
150 tbuf.actime = 1001;
151 tbuf.modtime = 1000;
152 chk_error(truncate("file2", 100));
153 chk_error(utime("file2", &tbuf));
154 chk_error(stat("file2", &st));
155 if (st.st_size != 100)
156 error("stat size");
157 if (!S_ISREG(st.st_mode))
158 error("stat mode");
159 if ((st.st_mode & 0777) != 0600)
160 error("stat mode2");
161 if (st.st_atime != 1001 ||
162 st.st_mtime != 1000)
163 error("stat time");
164
165 chk_error(stat(TESTPATH, &st));
166 if (!S_ISDIR(st.st_mode))
167 error("stat mode");
168
169
170 fd = chk_error(open("file2", O_RDWR));
171 chk_error(ftruncate(fd, 50));
172 chk_error(fstat(fd, &st));
173 chk_error(close(fd));
174
175 if (st.st_size != 50)
176 error("stat size");
177 if (!S_ISREG(st.st_mode))
178 error("stat mode");
179
180
181 chk_error(symlink("file2", "file3"));
182 chk_error(lstat("file3", &st));
183 if (!S_ISLNK(st.st_mode))
184 error("stat mode");
185
186
187 dir = opendir(TESTPATH);
188 if (!dir)
189 error("opendir");
190 len = 0;
191 for(;;) {
192 de = readdir(dir);
193 if (!de)
194 break;
195 if (strcmp(de->d_name, ".") != 0 &&
196 strcmp(de->d_name, "..") != 0 &&
197 strcmp(de->d_name, "file2") != 0 &&
198 strcmp(de->d_name, "file3") != 0)
199 error("readdir");
200 len++;
201 }
202 closedir(dir);
203 if (len != 4)
204 error("readdir");
205
206 chk_error(unlink("file3"));
207 chk_error(unlink("file2"));
208 chk_error(chdir(cur_dir));
209 chk_error(rmdir(TESTPATH));
210}
211
212void test_fork(void)
213{
214 int pid, status;
215
216 pid = chk_error(fork());
217 if (pid == 0) {
218
219 exit(2);
220 }
221 chk_error(waitpid(pid, &status, 0));
222 if (!WIFEXITED(status) || WEXITSTATUS(status) != 2)
223 error("waitpid status=0x%x", status);
224}
225
226void test_time(void)
227{
228 struct timeval tv, tv2;
229 struct timespec ts, rem;
230 struct rusage rusg1, rusg2;
231 int ti, i;
232
233 chk_error(gettimeofday(&tv, NULL));
234 rem.tv_sec = 1;
235 ts.tv_sec = 0;
236 ts.tv_nsec = 20 * 1000000;
237 chk_error(nanosleep(&ts, &rem));
238 if (rem.tv_sec != 1)
239 error("nanosleep");
240 chk_error(gettimeofday(&tv2, NULL));
241 ti = tv2.tv_sec - tv.tv_sec;
242 if (ti >= 2)
243 error("gettimeofday");
244
245 chk_error(getrusage(RUSAGE_SELF, &rusg1));
246 for(i = 0;i < 10000; i++);
247 chk_error(getrusage(RUSAGE_SELF, &rusg2));
248 if ((rusg2.ru_utime.tv_sec - rusg1.ru_utime.tv_sec) < 0 ||
249 (rusg2.ru_stime.tv_sec - rusg1.ru_stime.tv_sec) < 0)
250 error("getrusage");
251}
252
253void pstrcpy(char *buf, int buf_size, const char *str)
254{
255 int c;
256 char *q = buf;
257
258 if (buf_size <= 0)
259 return;
260
261 for(;;) {
262 c = *str++;
263 if (c == 0 || q >= buf + buf_size - 1)
264 break;
265 *q++ = c;
266 }
267 *q = '\0';
268}
269
270
271char *pstrcat(char *buf, int buf_size, const char *s)
272{
273 int len;
274 len = strlen(buf);
275 if (len < buf_size)
276 pstrcpy(buf + len, buf_size - len, s);
277 return buf;
278}
279
280int server_socket(void)
281{
282 int val, fd;
283 struct sockaddr_in sockaddr;
284
285
286 fd = chk_error(socket(PF_INET, SOCK_STREAM, 0));
287
288 val = 1;
289 chk_error(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)));
290
291 sockaddr.sin_family = AF_INET;
292 sockaddr.sin_port = htons(TESTPORT);
293 sockaddr.sin_addr.s_addr = 0;
294 chk_error(bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)));
295 chk_error(listen(fd, 0));
296 return fd;
297
298}
299
300int client_socket(void)
301{
302 int fd;
303 struct sockaddr_in sockaddr;
304
305
306 fd = chk_error(socket(PF_INET, SOCK_STREAM, 0));
307 sockaddr.sin_family = AF_INET;
308 sockaddr.sin_port = htons(TESTPORT);
309 inet_aton("127.0.0.1", &sockaddr.sin_addr);
310 chk_error(connect(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)));
311 return fd;
312}
313
314const char socket_msg[] = "hello socket\n";
315
316void test_socket(void)
317{
318 int server_fd, client_fd, fd, pid, ret, val;
319 struct sockaddr_in sockaddr;
320 socklen_t len;
321 char buf[512];
322
323 server_fd = server_socket();
324
325
326 len = sizeof(val);
327 chk_error(getsockopt(server_fd, SOL_SOCKET, SO_TYPE, &val, &len));
328 if (val != SOCK_STREAM)
329 error("getsockopt");
330
331 pid = chk_error(fork());
332 if (pid == 0) {
333 client_fd = client_socket();
334 send(client_fd, socket_msg, sizeof(socket_msg), 0);
335 close(client_fd);
336 exit(0);
337 }
338 len = sizeof(sockaddr);
339 fd = chk_error(accept(server_fd, (struct sockaddr *)&sockaddr, &len));
340
341 ret = chk_error(recv(fd, buf, sizeof(buf), 0));
342 if (ret != sizeof(socket_msg))
343 error("recv");
344 if (memcmp(buf, socket_msg, sizeof(socket_msg)) != 0)
345 error("socket_msg");
346 chk_error(close(fd));
347 chk_error(close(server_fd));
348}
349
350#define WCOUNT_MAX 512
351
352void test_pipe(void)
353{
354 fd_set rfds, wfds;
355 int fds[2], fd_max, ret;
356 uint8_t ch;
357 int wcount, rcount;
358
359 chk_error(pipe(fds));
360 chk_error(fcntl(fds[0], F_SETFL, O_NONBLOCK));
361 chk_error(fcntl(fds[1], F_SETFL, O_NONBLOCK));
362 wcount = 0;
363 rcount = 0;
364 for(;;) {
365 FD_ZERO(&rfds);
366 fd_max = fds[0];
367 FD_SET(fds[0], &rfds);
368
369 FD_ZERO(&wfds);
370 FD_SET(fds[1], &wfds);
371 if (fds[1] > fd_max)
372 fd_max = fds[1];
373
374 ret = chk_error(select(fd_max + 1, &rfds, &wfds, NULL, NULL));
375 if (ret > 0) {
376 if (FD_ISSET(fds[0], &rfds)) {
377 chk_error(read(fds[0], &ch, 1));
378 rcount++;
379 if (rcount >= WCOUNT_MAX)
380 break;
381 }
382 if (FD_ISSET(fds[1], &wfds)) {
383 ch = 'a';
384 chk_error(write(fds[0], &ch, 1));
385 wcount++;
386 }
387 }
388 }
389 chk_error(close(fds[0]));
390 chk_error(close(fds[1]));
391}
392
393int thread1_res;
394int thread2_res;
395
396int thread1_func(void *arg)
397{
398 int i;
399 for(i=0;i<5;i++) {
400 thread1_res++;
401 usleep(10 * 1000);
402 }
403 return 0;
404}
405
406int thread2_func(void *arg)
407{
408 int i;
409 for(i=0;i<6;i++) {
410 thread2_res++;
411 usleep(10 * 1000);
412 }
413 return 0;
414}
415
416void test_clone(void)
417{
418 uint8_t *stack1, *stack2;
419 int pid1, pid2, status1, status2;
420
421 stack1 = malloc(STACK_SIZE);
422 pid1 = chk_error(clone(thread1_func, stack1 + STACK_SIZE,
423 CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello1"));
424
425 stack2 = malloc(STACK_SIZE);
426 pid2 = chk_error(clone(thread2_func, stack2 + STACK_SIZE,
427 CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello2"));
428
429 while (waitpid(pid1, &status1, 0) != pid1);
430 free(stack1);
431 while (waitpid(pid2, &status2, 0) != pid2);
432 free(stack2);
433 if (thread1_res != 5 ||
434 thread2_res != 6)
435 error("clone");
436}
437
438
439
440volatile int alarm_count;
441jmp_buf jmp_env;
442
443void sig_alarm(int sig)
444{
445 if (sig != SIGALRM)
446 error("signal");
447 alarm_count++;
448}
449
450void sig_segv(int sig, siginfo_t *info, void *puc)
451{
452 if (sig != SIGSEGV)
453 error("signal");
454 longjmp(jmp_env, 1);
455}
456
457void test_signal(void)
458{
459 struct sigaction act;
460 struct itimerval it, oit;
461
462
463
464 alarm_count = 0;
465
466 act.sa_handler = sig_alarm;
467 sigemptyset(&act.sa_mask);
468 act.sa_flags = 0;
469 chk_error(sigaction(SIGALRM, &act, NULL));
470
471 it.it_interval.tv_sec = 0;
472 it.it_interval.tv_usec = 10 * 1000;
473 it.it_value.tv_sec = 0;
474 it.it_value.tv_usec = 10 * 1000;
475 chk_error(setitimer(ITIMER_REAL, &it, NULL));
476 chk_error(getitimer(ITIMER_REAL, &oit));
477 if (oit.it_value.tv_sec != it.it_value.tv_sec ||
478 oit.it_value.tv_usec != it.it_value.tv_usec)
479 error("itimer");
480
481 while (alarm_count < 5) {
482 usleep(10 * 1000);
483 }
484
485 it.it_interval.tv_sec = 0;
486 it.it_interval.tv_usec = 0;
487 it.it_value.tv_sec = 0;
488 it.it_value.tv_usec = 0;
489 memset(&oit, 0xff, sizeof(oit));
490 chk_error(setitimer(ITIMER_REAL, &it, &oit));
491 if (oit.it_value.tv_sec != 0 ||
492 oit.it_value.tv_usec != 10 * 1000)
493 error("setitimer");
494
495
496 act.sa_sigaction = sig_segv;
497 sigemptyset(&act.sa_mask);
498 act.sa_flags = SA_SIGINFO;
499 chk_error(sigaction(SIGSEGV, &act, NULL));
500 if (setjmp(jmp_env) == 0) {
501 *(uint8_t *)0 = 0;
502 }
503
504 act.sa_handler = SIG_DFL;
505 sigemptyset(&act.sa_mask);
506 act.sa_flags = 0;
507 chk_error(sigaction(SIGSEGV, &act, NULL));
508}
509
510#define SHM_SIZE 32768
511
512void test_shm(void)
513{
514 void *ptr;
515 int shmid;
516
517 shmid = chk_error(shmget(IPC_PRIVATE, SHM_SIZE, IPC_CREAT | 0777));
518 ptr = shmat(shmid, NULL, 0);
519 if (!ptr)
520 error("shmat");
521
522 memset(ptr, 0, SHM_SIZE);
523
524 chk_error(shmctl(shmid, IPC_RMID, 0));
525 chk_error(shmdt(ptr));
526}
527
528int main(int argc, char **argv)
529{
530 test_file();
531 test_fork();
532 test_time();
533 test_socket();
534
535 test_signal();
536 test_shm();
537 return 0;
538}
539
