#include "user.h" // file system tests char buf[1024]; char *args[] = { "echo", "hello", "goodbye", 0 }; int main(void) { int fd; puts("userfs running\n"); block(); fd = open("echo", 0); if(fd >= 0){ puts("open echo ok\n"); close(fd); } else { puts("open echo failed!\n"); } fd = open("doesnotexist", 0); if(fd >= 0){ puts("open doesnotexist succeeded!\n"); close(fd); } else { puts("open doesnotexist failed\n"); } exec("echo", args); return 0; }