mirror of https://github.com/t1meshift/os_labs.git
42 lines
881 B
C
42 lines
881 B
C
#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 <fcntl.h>
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#include <assert.h>
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#include <sys/wait.h>
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// A macro to simplify my life
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#define FORK_TASK(IN_FORK, IN_THIS) { \
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int f = fork(); \
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switch (f) { \
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case -1: perror("fork() returned an error!"); exit(1); \
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case 0: IN_FORK; exit(0); \
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default: IN_THIS; \
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} \
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}
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int main() {
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// Task 3
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printf("\n\nTask 3\n");
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FORK_TASK(
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{
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printf("Goodbye, fork, you are `ls' now\n");
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if (execlp("ls", "ls", "-lah", NULL) == -1) {
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perror("exec() error");
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};
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},
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{
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printf("Fork executed, pid: %d\n", f);
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//int status = -1488;
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int kk = wait(NULL);
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printf("AFTER wait, pid: %d\n", kk);
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//waitpid(f, &status, 0);
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//printf("Execution status is %d\n", status);
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}
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)
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return 0;
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}
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