banan-os/userspace/tests/test-fork/main.cpp

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include <unistd.h>
#define ERROR(msg) { perror(msg); return 1; }
#define BUF_SIZE 1024
int main()
{
printf("userspace\n");
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if (fork() == 0)
{
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execl("/usr/bin/cat", "/usr/bin/cat", "/usr/include/kernel/kprint.h", NULL);
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ERROR("execl");
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return 0;
}
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printf("parent\n");
return 0;
}