#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>

void main(void) {
    int f;
    char dummy[17];

    f = open("/var/adm/ftp/users", O_WRONLY|O_CREAT|O_TRUNC, 0644);
    if (f>=0) {
	struct passwd * pw;
	while((pw = getpwent()) != NULL) {
	    lseek(f, 9*pw->pw_uid, SEEK_SET);
	    sprintf( dummy, "%s%s", pw->pw_name, "        " );
	    write(f, dummy, 8);
	}
	close(f);
    } else {
	exit( 1 );
    }

    f = open("/var/adm/ftp/groups", O_WRONLY|O_CREAT|O_TRUNC, 0644);
    if (f>=0) {
	struct group * gr;
	while((gr = getgrent()) != NULL) {
	    lseek(f, 9*gr->gr_gid, SEEK_SET);
	    sprintf( dummy, "%s%s", gr->gr_name, "        " );
	    write(f, dummy, 8);
	}
	close(f);
    } else {
	exit( 2 );
    }

    exit( 0 );
}