#include <u.h>#include <libc.h> /* * like fprint but be sure to deliver as a single write. * (fprint uses a small write buffer.) */voidxfprint(int fd, char *fmt, ...){	char *s;	va_list arg; 	va_start(arg, fmt);	s = vsmprint(fmt, arg);	va_end(arg);	if(s == nil)		sysfatal("smprint: %r");	write(fd, s, strlen(s));	free(s);} voidmain(int argc, char **argv){	int fd;	char dir[512]; 	fd = open("/dev/acme/ctl", OWRITE);	if(fd < 0)		exits(0);	getwd(dir, 512);	if(dir[0]!=0 && dir[strlen(dir)-1]=='/')		dir[strlen(dir)-1] = 0;	xfprint(fd, "name %s/-%s\n",  dir, argc > 1 ? argv[1] : "rc");	xfprint(fd, "dumpdir %s\n", dir);	exits(0);}