minix/fs/ext2/buf.h

   1 #ifndef EXT2_BUF_H
   2 #define EXT2_BUF_H
   3
   4 union fsdata_u {
   5     char b__data[1];            /* ordinary user data */
   6     block_t b__ind[1];          /* indirect block */
   7     bitchunk_t b__bitmap[1];    /* bit map block */
   8 };
   9
  10 /* These defs make it possible to use to bp->b_data instead of bp->b.b__data */
  11 #define b_data(bp)   ((union fsdata_u *) bp->data)->b__data
  12 #define b_ind(bp) ((union fsdata_u *) bp->data)->b__ind
  13 #define b_bitmap(bp) ((union fsdata_u *) bp->data)->b__bitmap
  14
  15 #endif /* EXT2_BUF_H */