#include <u.h>#include <libc.h>#include <bio.h>#include <ctype.h>#include "authcmdlib.h" voidwrbio(char *file, Acctbio *a){	char buf[1024];	int i, fd, n; 	fd = open(file, OWRITE);	if(fd < 0)		error("can't open %s", file);	if(seek(fd, 0, 2) < 0)		error("can't seek %s", file); 	if(a->postid == 0)		a->postid = "";	if(a->name == 0)		a->name = "";	if(a->dept == 0)		a->dept = "";	if(a->email[0] == 0)		a->email[0] = strdup(a->user); 	n = 0;	n += snprint(buf+n, sizeof(buf)-n, "%s|%s|%s|%s",		a->user, a->postid, a->name, a->dept);	for(i = 0; i < Nemail; i++){		if(a->email[i] == 0)			break;		n += snprint(buf+n, sizeof(buf)-n, "|%s", a->email[i]);	}	n += snprint(buf+n, sizeof(buf)-n, "\n"); 	write(fd, buf, n);	close(fd);}