/*  * 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> voidmain(int argc, char *argv[]){	char *name, buf[4*1024];	int fd, n, i, errs; 	name = 0;	ARGBEGIN{	case 'n':		name = ARGF();		break;	default:		fprint(2, "usage: kfscmd [-n server] commands\n");		exits("usage");	}ARGEND 	if(name)		snprint(buf, sizeof buf, "/srv/kfs.%s.cmd", name);	else		strcpy(buf, "/srv/kfs.cmd");	fd = open(buf, ORDWR);	if(fd < 0){		fprint(2, "kfscmd: can't open commands file\n");		exits("commands file");	} 	errs = 0;	for(i = 0; i < argc; i++){		if(write(fd, argv[i], strlen(argv[i])) != strlen(argv[i])){			fprint(2, "%s: error writing %s: %r", argv0, argv[i]);			errs++;			continue;		}		for(;;){			n = read(fd, buf, sizeof buf - 1);			if(n < 0){				fprint(2, "%s: error executing %s: %r", argv0, argv[i]);				errs++;				break;			}			buf[n] = '\0';			if(strcmp(buf, "done") == 0 || strcmp(buf, "success") == 0)				break;			if(strcmp(buf, "unknown command") == 0){				errs++;				print("kfscmd: command %s not recognized\n", argv[i]);				break;			}			write(1, buf, n);		}	}	exits(errs ? "errors" : 0);		}