1 #include	"lib9.h"
2 #include	<bio.h>
3 
4 int
5 Bbuffered(Biobuf *bp)
6 {
7 	switch(bp->state) {
8 	case Bracteof:
9 	case Bractive:
10 		return -bp->icount;
11 
12 	case Bwactive:
13 		return bp->bsize + bp->ocount;
14 
15 	case Binactive:
16 		return 0;
17 	}
18 	fprint(2, "Bbuffered: unknown state %d\n", bp->state);
19 	return 0;
20 }