sys/src/libbio/boffset.c

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