#include	"lib9.h"#include	<bio.h> intBputc(Biobuf *bp, int c){	int i, j; loop:	i = bp->ocount;	j = i+1;	if(i != 0) {		bp->ocount = j;		bp->ebuf[i] = c;		return 0;	}	if(bp->state != Bwactive)		return Beof;	j = write(bp->fid, bp->bbuf, bp->bsize);	if(j == bp->bsize) {		bp->ocount = -bp->bsize;		bp->offset += j;		goto loop;	}	fprint(2, "Bputc: write error\n");	bp->state = Binactive;	bp->ocount = 0;	return Beof;}