#include #include #include pid_t fork(void) { printf("fork not allowed\n"); _exit(1); } pid_t vfork(void) { printf("vfork not allowed\n"); _exit(1); } int system(char* text) { printf("system not allowed\n"); _exit(1); } int execve(const char *filename, char *const argv[], char *const envp[]) { printf("execve not allowed\n"); _exit(1); }