File: bbuffered.c

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#include	"os.h"

int
Bbuffered(Biobufhdr *bp)
{
	switch(bp->state) {
	case Bracteof:
	case Bractive:
		return -bp->icount;

	case Bwactive:
		return bp->bsize + bp->ocount;

	case Binactive:
		return 0;
	}
	fprint(2, "Bbuffered: unknown state %d\n", bp->state);
	return 0;
}