/*  * 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>#include <bio.h> #include "modem.h" int vflag; voidverbose(char *fmt, ...){	va_list arg;	char buf[512]; 	if(vflag){		va_start(arg, fmt);		vseprint(buf, buf+sizeof(buf), fmt, arg);		va_end(arg);		syslog(0, "fax", buf);	}} voiderror(char *fmt, ...){	va_list arg;	char buf[512];	int n; 	n = sprint(buf, "%s: ", argv0);	va_start(arg, fmt);	vseprint(buf+n, buf+sizeof(buf)-n, fmt, arg);	va_end(arg);	fprint(2, buf);	if(vflag)		print(buf+n);	exits("error");} static char *errors[] = {	[Eok]		"no error",	[Eattn]		"can't get modem's attention",	[Enoanswer]	"Retry, no answer or busy",	[Enoresponse]	"Retry, no response from modem",	[Eincompatible]	"Retry, incompatible",	[Esys]		"Retry, system call error",	[Eproto]	"Retry, fax protocol botch",}; intseterror(Modem *m, int error){	if(error == Esys)		sprint(m->error, "%s: %r", errors[Esys]);	else		strcpy(m->error, errors[error]);	verbose("seterror: %s", m->error);	return error;} voidfaxrlog(Modem *m, int ok){	char buf[1024];	int n; 	n = sprint(buf, "receive %lud %c %d", m->time, ok == Eok ? 'Y': 'N', m->pageno-1);	if(ok == Eok && (m->valid & Vftsi))		sprint(buf+n, " %s", m->ftsi);	syslog(0, "fax", buf);}