/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <auth.h>#include <fcall.h>#include "../boot/boot.h" char	*authaddr;static void glenda(void); voidauthentication(int cpuflag){	char *s;	char *argv[16], **av;	int ac; 	if(access("/boot/factotum", AEXEC) < 0){		glenda();		return;	} 	/* start agent */	ac = 0;	av = argv;	av[ac++] = "factotum";	if(getenv("debugfactotum"))		av[ac++] = "-p";	s = getenv("factotumopts");	if(s != nil && *s != '\0')		av[ac++] = s;//	av[ac++] = "-d";		/* debug traces *///	av[ac++] = "-D";		/* 9p messages */	if(cpuflag)		av[ac++] = "-S";	else		av[ac++] = "-u";	av[ac++] = "-sfactotum";	if(authaddr != nil){		av[ac++] = "-a";		av[ac++] = authaddr;	}	av[ac] = 0;	switch(fork()){	case -1:		fatal("starting factotum");	case 0:		exec("/boot/factotum", av);		fatal("execing /boot/factotum");	} 	/* wait for agent to really be there */	while(access("/mnt/factotum", 0) < 0)		sleep(250);} static voidglenda(void){	int fd;	char *s; 	s = getenv("user");	if(s == nil)		s = "glenda"; 	fd = open("#c/hostowner", OWRITE);	if(fd >= 0){		if(write(fd, s, strlen(s)) != strlen(s))			fprint(2, "setting #c/hostowner to %s: %r\n", s);		close(fd);	}}