xref: /inferno-os/libbio/boffset.c (revision 72335078034e3cd7edcb1739556b405a3e1e9bf8) 
1 #include	"lib9.h"
2 #include	<bio.h>
3 
4 vlong
Boffset(Biobuf * bp)5 Boffset(Biobuf *bp)
6 {
7 	vlong n;
8 
9 	switch(bp->state) {
10 	default:
11 		fprint(2, "Boffset: unknown state %d\n", bp->state);
12 		n = Beof;
13 		break;
14 
15 	case Bracteof:
16 	case Bractive:
17 		n = bp->offset + bp->icount;
18 		break;
19 
20 	case Bwactive:
21 		n = bp->offset + (bp->bsize + bp->ocount);
22 		break;
23 	}
24 	return n;
25 }
26