getdatablk
pdirbp = getdatablk(blkno, size);
extern struct bufarea *getdatablk(daddr32_t, long);
bp = getdatablk(idesc->id_blkno, sblock.e2fs_bsize);
pbp = getdatablk(iblk, sblock.e2fs_bsize);
struct bufarea *getdatablk(daddr32_t, long);
blk_bitmap = getdatablk(letoh32(fs->e2fs_gd[c].ext2bgd_b_bitmap),
ino_bitmap = getdatablk(letoh32(fs->e2fs_gd[c].ext2bgd_i_bitmap),
pdirbp = getdatablk(blkno, size);
extern struct bufarea *getdatablk(daddr_t, long);
bp = getdatablk(idesc->id_blkno, sblock.fs_bsize);
pbp = getdatablk(iblk, sblock.fs_bsize);