Example #1
0
File: boot.c Project: CoryXie/NxM
void
boot(int argc, char *argv[])
{
	int fd, afd;
	Method *mp;
	char *cmd, cmdbuf[64], *iargv[16];
	char rootbuf[64];
	int islocal, ishybrid;
	char *rp, *rsp, *rdparts;
	int iargc, n;
	char buf[32];
	AuthInfo *ai;

	fmtinstall('r', errfmt);

	/*
	 * we should inherit the standard fds all referring to /dev/cons,
	 * but we're being paranoid.
	 */
	close(0);
	close(1);
	close(2);
	bind("#c", "/dev", MBEFORE);
	open("/dev/cons", OREAD);
	open("/dev/cons", OWRITE);
	open("/dev/cons", OWRITE);
	/*
	 * init will reinitialize its namespace.
	 * #ec gets us plan9.ini settings (*var variables).
	 */
	bind("#ec", "/env", MREPL);
	bind("#e", "/env", MBEFORE|MCREATE);
	bind("#s", "/srv/", MREPL|MCREATE);
	if(getenv("debugboot"))
		debugboot = 1;
#ifdef DEBUG
	print("argc=%d\n", argc);
	for(fd = 0; fd < argc; fd++)
		print("%#p %s ", argv[fd], argv[fd]);
	print("\n");
#endif	/* DEBUG */

	ARGBEGIN{
	case 'k':
		kflag = 1;
		break;
	case 'm':
		mflag = 1;
		break;
	case 'f':
		fflag = 1;
		break;
	}ARGEND

	readfile("#e/cputype", cputype, sizeof(cputype));

	/*
	 *  set up usb keyboard & mouse, if any.
	 *  starts usbd, which mounts itself on /dev.
	 *  starts partfs on first disk, if any, to permit nvram on usb.
	 */
	usbinit(Dontpost);

	/*
	 *  pick a method and initialize it
	 */
	if(method[0].name == nil)
		fatal("no boot methods");
	mp = rootserver(argc ? *argv : 0);
	(*mp->config)(mp);
	islocal = strcmp(mp->name, "local") == 0;
	ishybrid = strcmp(mp->name, "hybrid") == 0;

	/*
	 *  load keymap if it's there.
	 */
	kbmap();

	/* don't trigger aoe until the network has been configured */
	bind("#æ", "/dev", MAFTER);	/* nvram could be here */
	bind("#S", "/dev", MAFTER);	/* nvram could be here */

	/*
	 * read disk partition tables here so that readnvram via factotum
	 * can see them.  ideally we would have this information in
	 * environment variables before attaching #S, which would then
	 * parse them and create partitions.
	 */
	rdparts = getenv("readparts");
	if(rdparts)
		readparts();
	free(rdparts);

	/*
 	 *  authentication agent
	 *  sets hostowner, creating an auth discontinuity
	 */
	if(debugboot)
		fprint(2, "auth...");
	authentication(cpuflag);

	/* leave existing subprocesses in their own namespace */
	rfork(RFNAMEG);

	/*
	 * restart partfs under the new hostowner id
	 */
	usbinit(Post);

	/*
	 *  connect to the root file system
	 */
	fd = (*mp->connect)();
	if(fd < 0)
		fatal("can't connect to file server");
	if(getenv("srvold9p"))
		fd = old9p(fd);
	if(!islocal && !ishybrid){
		if(cfs)
			fd = (*cfs)(fd);
	}
	print("version...");
	buf[0] = '\0';
	n = fversion(fd, 0, buf, sizeof buf);
	if(n < 0)
		fatal("can't init 9P");
	srvcreate("boot", fd);

	/*
	 *  create the name space, mount the root fs
	 */
	if(bind("/", "/", MREPL) < 0)
		fatal("bind /");
	rp = getenv("rootspec");
	if(rp == nil)
		rp = "";
	
	afd = fauth(fd, rp);
	if(afd >= 0){
		ai = auth_proxy(afd, auth_getkey, "proto=p9any role=client");
		if(ai == nil)
			print("authentication failed (%r), trying mount anyways\n");
	}
	if(mount(fd, afd, "/root", MREPL|MCREATE, rp) < 0)
		fatal("mount /");
	rsp = rp;
	rp = getenv("rootdir");
	if(rp == nil)
		rp = rootdir;
	if(bind(rp, "/", MAFTER|MCREATE) < 0){
		if(strncmp(rp, "/root", 5) == 0){
			fprint(2, "boot: couldn't bind $rootdir=%s to root: %r\n", rp);
			fatal("second bind /");
		}
		snprint(rootbuf, sizeof rootbuf, "/root/%s", rp);
		rp = rootbuf;
		if(bind(rp, "/", MAFTER|MCREATE) < 0){
			fprint(2, "boot: couldn't bind $rootdir=%s to root: %r\n", rp);
			if(strcmp(rootbuf, "/root//plan9") == 0){
				fprint(2, "**** warning: remove rootdir=/plan9 entry from plan9.ini\n");
				rp = "/root";
				if(bind(rp, "/", MAFTER|MCREATE) < 0)
					fatal("second bind /");
			}else
				fatal("second bind /");
		}
	}
	close(fd);
	setenv("rootdir", rp);

	settime(islocal, afd, rsp);
	if(afd > 0)
		close(afd);
	swapproc();

	cmd = getenv("init");
	if(cmd == nil){
		sprint(cmdbuf, "/%s/init -%s%s", cputype,
			cpuflag ? "c" : "t", mflag ? "m" : "");
		cmd = cmdbuf;
	}
	iargc = tokenize(cmd, iargv, nelem(iargv)-1);
	cmd = iargv[0];

	/* make iargv[0] basename(iargv[0]) */
	if(iargv[0] = strrchr(iargv[0], '/'))
		iargv[0]++;
	else
		iargv[0] = cmd;

	iargv[iargc] = nil;

	chmod("/srv/" PARTSRV, 0600);
	exec(cmd, iargv);
	fatal(cmd);
}
Example #2
0
void
boot(int argc, char *argv[])
{
	int fd, afd, srvt;
	Method *mp;
	char *cmd, cmdbuf[64], *iargv[16];
	char rootbuf[64];
	int islocal, ishybrid;
	char *rp, *rsp;
	int iargc, n;
	char buf[32];
	AuthInfo *ai;

	fmtinstall('r', errfmt);

	bind("#c", "/dev", MBEFORE);
	open("/dev/cons", OREAD);
	open("/dev/cons", OWRITE);
	open("/dev/cons", OWRITE);

	/*
	 * init will reinitialize its namespace.
	 * #ec gets us plan9.ini settings (*var variables).
	 */
	bind("#ec", "/env", MREPL);
	bind("#e", "/env", MBEFORE|MCREATE);
	bind("#s", "/srv", MREPL|MCREATE);
	bind("#p", "/proc", MREPL|MCREATE);
	print("\nHello, I am Harvey :-)\n\n");
#ifdef DEBUG
	print("argc=%d\n", argc);
	for(fd = 0; fd < argc; fd++)
		print("%#p %s ", argv[fd], argv[fd]);
	print("\n");
#endif //DEBUG

	ARGBEGIN{
	case 'k':
		kflag = 1;
		break;
	case 'm':
		mflag = 1;
		break;
	case 'f':
		fflag = 1;
		break;
	}ARGEND
	readfile("#e/cputype", cputype, sizeof(cputype));
	readfile("#e/service", service, sizeof(service));

	/* Do the initial ACPI interrupt setup work.
	 * If we don't do this we may not get needed
	 * interfaces. */
	if (getenv("acpiirq"))
		acpiirq();

	/*
	 *  set up usb keyboard, mouse and disk, if any.
	 */
	usbinit();
	print("usbinit done\n");

	/*
	 *  pick a method and initialize it
	 */
	if(method[0].name == nil)
		fatal("no boot methods");
	mp = rootserver(argc ? *argv : 0);
	(*mp->config)(mp);
	islocal = strcmp(mp->name, "local") == 0;
	ishybrid = strcmp(mp->name, "hybrid") == 0;

	/*
	 *  load keymap if it is there.
	 */
	kbmap();

	/*
 	 *  authentication agent
	 */
	authentication(cpuflag);

	print("connect...");

	/*
	 *  connect to the root file system
	 */
	fd = (*mp->connect)();
	if(fd < 0)
		fatal("can't connect to file server");
	if(!islocal && !ishybrid){
		if(cfs)
			fd = (*cfs)(fd);
	}

	print("version...");
	buf[0] = '\0';
	n = fversion(fd, 0, buf, sizeof buf);
	if(n < 0)
		fatal("can't init 9P");
	srvcreate("boot", fd);

	/*
	 *  create the name space, mount the root fs
	 */
	if(bind("/", "/", MREPL) < 0)
		fatal("bind /");
	rp = getenv("rootspec");
	if(rp == nil)
		rp = "";

	afd = fauth(fd, rp);
	if(afd >= 0){
		ai = auth_proxy(afd, auth_getkey, "proto=p9any role=client");
		if(ai == nil)
			print("authentication failed (%r), trying mount anyways\n");
	}
	if(mount(fd, afd, "/root", MREPL|MCREATE, rp, 'M') < 0)
		fatal("mount /");
	rsp = rp;
	rp = getenv("rootdir");
	if(rp == nil)
		rp = rootdir;
	if(bind(rp, "/", MAFTER|MCREATE) < 0){
		if(strncmp(rp, "/root", 5) == 0){
			fprint(2, "boot: couldn't bind $rootdir=%s to root: %r\n", rp);
			fatal("second bind /");
		}
		snprint(rootbuf, sizeof rootbuf, "/root/%s", rp);
		rp = rootbuf;
		if(bind(rp, "/", MAFTER|MCREATE) < 0){
			fprint(2, "boot: couldn't bind $rootdir=%s to root: %r\n", rp);
			if(strcmp(rootbuf, "/root//plan9") == 0){
				fprint(2, "**** warning: remove rootdir=/plan9 entry from plan9.ini\n");
				rp = "/root";
				if(bind(rp, "/", MAFTER|MCREATE) < 0)
					fatal("second bind /");
			}else
				fatal("second bind /");
		}
	}
	close(fd);
	setenv("rootdir", rp);

	settime(islocal, afd, rsp);
	if(afd > 0)
		close(afd);

	cmd = getenv("init");
	srvt = strcmp(service, "terminal");
	if(cmd == nil){
		if(!srvt) {
			sprint(cmdbuf, "/%s/bin/init -%s%s", cputype,
				"t", mflag ? "m" : "");
			cmd = cmdbuf;
		} else {
			sprint(cmdbuf, "/%s/bin/init -%s%s", cputype,
				"c", mflag ? "m" : "");
			cmd = cmdbuf;
		}
	}
	iargc = tokenize(cmd, iargv, nelem(iargv)-1);
	cmd = iargv[0];

	/* make iargv[0] basename(iargv[0]) */
	if((iargv[0] = strrchr(iargv[0], '/')) != nil)
		iargv[0]++;
	else
		iargv[0] = cmd;

	iargv[iargc] = nil;

	exec(cmd, iargv);
	fatal(cmd);
}