All symbols starting with `b' in ufs/ffs

• BBLOCK ufs/ffs/fs.h:64
• BBOFF ufs/ffs/fs.h:62
• BBSIZE ufs/ffs/fs.h:60
• blkmap ufs/ffs/fs.h:414
• blknum ufs/ffs/fs.h:448
• blkoff ufs/ffs/fs.h:428
• blkroundup ufs/ffs/fs.h:438
• blksize ufs/ffs/fs.h:462
• blkstofrags ufs/ffs/fs.h:444