forked from p7px8vou9/system_call_expand
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40 lines
830 B
40 lines
830 B
/*
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* 成功测试时的输出：
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* " Write to pipe successfully."
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <assert.h>
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static int fd[2];
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void test_pipe(void){
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int cpid;
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char buf[128] = {0};
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int ret = pipe2(fd, 0);
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assert(ret != -1);
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const char *data = " Write to pipe successfully.\n";
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cpid = fork();
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printf("cpid: %d\n", cpid);
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if(cpid > 0){
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close(fd[1]);
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while(read(fd[0], buf, 1) > 0)
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write(STDOUT_FILENO, buf, 1);
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write(STDOUT_FILENO, "\n", 1);
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close(fd[0]);
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wait(NULL);
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}else{
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close(fd[0]);
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write(fd[1], data, strlen(data));
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close(fd[1]);
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exit(0);
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}
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}
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int main(void){
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test_pipe();
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return 0;
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}
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