plan9fox/sys/src/9/boot/boot.c

#include <u.h>
#include <libc.h>
#include <auth.h>
#include <fcall.h>
#include "../boot/boot.h"

char	cputype[64];
char 	reply[256];
int	printcol;
int	mflag;
int	fflag;
int	kflag;

void
boot(int argc, char *argv[])
{
	Waitmsg *w;
	int pid, i;

	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);

	if(Debug){
		print("argc=%d\n", argc);
		for(i = 0; i < argc; i++)
			print("%lux %s ", (ulong)argv[i], argv[i]);
		print("\n");
	}

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

	readfile("#e/cputype", cputype, sizeof(cputype));
	setenv("bootdisk", bootdisk, 0);
	
	/* setup the boot namespace */
	run("/boot/mntgen", "-s", "slash", "/mnt", nil);
	run("/boot/bzfs", "-f", "/boot/rootfs.bz2", "-m", "/mnt/broot", nil);
	bind("/mnt/broot", "/", MAFTER);
	bind("/386/bin", "/bin", MAFTER);
	bind("/rc/bin", "/bin", MAFTER);
	bind("/boot", "/bin", MAFTER);

	switch(pid = rfork(RFFDG|RFREND|RFPROC)){
	case -1:
		fatal("fork error");
	case 0:
		setenv("cpuflag", cpuflag ? "1" : "0", 0);
		run("/bin/rc", "/rc/bin/bootrc", nil);
		break;
	default:
		while((w = wait()) != nil)
			if(w->pid == pid)
				break;
		if(w == nil){
			free(w);
			fatal("wait error");
		}
		free(w);
		break;
	}

	for(;;)
		;
}