#include <sys/types.h>#include <sys/wait.h>#include <unistd.h>#include <err.h> #include <stdlib.h>#include <stdint.h>#include "../libc.h" intauth_getkey(char *params){	int pid, s;	pid_t w; 	/* start /factotum to query for a key */	switch(pid = fork()){	case -1:		return -1;	case 0:		if(execlp("factotum", "getkey", "-g", params, nil) == -1)		err(1, "Could not exec factotum");		exit(0);	default:		for(;;){			w = wait(&s);			if(w == -1)				break;			if(w == pid){				return WIFEXITED(s) ? 0 : -1;			}		}	}	return 0;}