f_blk
char *f_blk[NIADDR];
if (fp->f_blk[level] == NULL)
fp->f_blk[level] =
fp->f_blk[level],
ind_block_num = ((ufs1_daddr_t *)fp->f_blk[level])[idx];
ind_block_num = ((ufs2_daddr_t *)fp->f_blk[level])[idx];
if (fp->f_blk[level])
free(fp->f_blk[level]);