source: trunk/minix/test/test13.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 1.2 KB
RevLine 
[9]1/* test 13 */
2
3/* File: pipes.c - created by Marty Leisner */
4/* Leisner.Henr 1-Dec-87 8:55:04 */
5
6/* Copyright (C) 1987 by Martin Leisner. All rights reserved. */
7/* Used by permission. */
8
9#include <sys/types.h>
10#include <sys/wait.h>
11#include <stdlib.h>
12#include <unistd.h>
13#include <stdio.h>
14
15#define BLOCK_SIZE 1000
16#define NUM_BLOCKS 1000
17
18int errct = 0;
19char buffer[BLOCK_SIZE];
20
21_PROTOTYPE(int main, (void));
22_PROTOTYPE(void quit, (void));
23
24int main()
25{
26 int stat_loc, pipefd[2];
27 register int i;
28 pipe(pipefd);
29
30 printf("Test 13 ");
31 fflush(stdout); /* have to flush for child's benefit */
32
33 system("rm -rf DIR_13; mkdir DIR_13");
34 chdir("DIR_13");
35
36 pipe(pipefd);
37
38 switch (fork()) {
39 case 0:
40 /* Child code */
41 for (i = 0; i < NUM_BLOCKS; i++)
42 if (read(pipefd[0], buffer, BLOCK_SIZE) != BLOCK_SIZE) break;
43 exit(0);
44
45 case -1:
46 perror("fork broke");
47 exit(1);
48
49 default:
50 /* Parent code */
51 for (i = 0; i < NUM_BLOCKS; i++) write(pipefd[1], buffer, BLOCK_SIZE);
52 wait(&stat_loc);
53 break;
54 }
55 quit();
56 return(-1); /* impossible */
57}
58
59void quit()
60{
61
62 chdir("..");
63 system("rm -rf DIR*");
64
65 if (errct == 0) {
66 printf("ok\n");
67 exit(0);
68 } else {
69 printf("%d errors\n", errct);
70 exit(1);
71 }
72}
Note: See TracBrowser for help on using the repository browser.