73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
/* test 13 */
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/* File: pipes.c - created by Marty Leisner */
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/* Leisner.Henr 1-Dec-87 8:55:04 */
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/* Copyright (C) 1987 by Martin Leisner. All rights reserved. */
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/* Used by permission. */
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#define BLOCK_SIZE 1000
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#define NUM_BLOCKS 1000
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int errct = 0;
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char buffer[BLOCK_SIZE];
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_PROTOTYPE(int main, (void));
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_PROTOTYPE(void quit, (void));
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int main()
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{
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int stat_loc, pipefd[2];
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register int i;
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pipe(pipefd);
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printf("Test 13 ");
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fflush(stdout); /* have to flush for child's benefit */
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system("rm -rf DIR_13; mkdir DIR_13");
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chdir("DIR_13");
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pipe(pipefd);
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switch (fork()) {
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case 0:
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/* Child code */
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for (i = 0; i < NUM_BLOCKS; i++)
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if (read(pipefd[0], buffer, BLOCK_SIZE) != BLOCK_SIZE) break;
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exit(0);
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case -1:
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perror("fork broke");
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exit(1);
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default:
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/* Parent code */
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for (i = 0; i < NUM_BLOCKS; i++) write(pipefd[1], buffer, BLOCK_SIZE);
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wait(&stat_loc);
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break;
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}
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quit();
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return(-1); /* impossible */
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}
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void quit()
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{
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chdir("..");
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system("rm -rf DIR*");
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if (errct == 0) {
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printf("ok\n");
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exit(0);
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} else {
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printf("%d errors\n", errct);
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exit(1);
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}
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}
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