#include <u.h>#include <libc.h>#include <auth.h>#include "authsrv.h" enum{	Plan9		= 1,	Securenet	= 2,}; int	rem(char*, char*);void	usage(void); voidmain(int argc, char *argv[]){	char *u;	int which; 	which = 0;	ARGBEGIN{	case 'p':		which |= Plan9;		break;	case 'n':		which |= Securenet;		break;	default:		usage();	}ARGEND	argv0 = "removeuser"; 	if(argc != 1)		usage();	u = *argv;	if(memchr(u, '\0', NAMELEN) == 0)		error("bad user name"); 	if(!which)		which = Plan9|Securenet;	if(which & Plan9){		if(rem(KEYDB, u))			print("user %s removed from Plan 9\n", u);		else			print("couldn't remove %s from Plan 9: %r\n", u);		syslog(0, AUTHLOG, "user %s removed from Plan 9", u);	}	if(which & Securenet){		if(rem(NETKEYDB, u))			print("user %s removed from SecureNet\n", u);		else			print("couldn't remove %s from SecureNet: %r\n", u);		syslog(0, AUTHLOG, "user %s removed from Securenet", u);	}	exits(0);} intrem(char *db, char *u){	char buf[KEYDBBUF+NAMELEN+6]; 	sprint(buf, "%s/%s", db, u);	return remove(buf) >= 0;} voidusage(void){	fprint(2, "usage: removeuser [-pn] user\n");	exits("usage");}