#include <u.h>#include <libc.h>#include <auth.h>#include <fcall.h>#include "../boot/boot.h" static Fcall	hdr; static voidrpc(int fd, int type){	int n, l;	char buf[128], *p; 	hdr.type = type;	hdr.tag = NOTAG;	n = convS2M(&hdr, buf);	if(write(fd, buf, n) != n)		fatal("write rpc"); 	print("...");	p = buf;	l = 0;	while(l < 3) {		n = read(fd, p, 3);		if(n <= 0)			fatal("read rpc");		if(n == 2 && l == 0 && buf[0] == 'O' && buf[1] == 'K')			continue;		p += n;		l += n;	}	if(convM2S(buf, &hdr, n) == 0){		print("%ux %ux %ux\n", buf[0], buf[1], buf[2]);		fatal("rpc format");	}	if(hdr.tag != NOTAG)		fatal("rpc tag not NOTAG");	if(hdr.type == Rerror){		print("error %s;", hdr.ename);		fatal("remote error");	}	if(hdr.type != type+1)		fatal("not reply");} voidnop(int fd){	print("nop");	rpc(fd, Tnop);}