ubifs_lpt_calc_hash(9)

💖 NAME 💖

okay so this page is ubifs_lpt_calc_hash(9) from the Kernel API Manual, and it is not doing too much, but it's doing it iconically:

ubifs_lpt_calc_hash — Calculate hash of the LPT pnodes ✨

🧚 SYNOPSIS 🧚

the whole call is giving:

int ubifs_lpt_calc_hash (struct ubifs_info *c , u8 *hash );

🎀 ARGUMENTS 🎀

• c — UBIFS file-system description object. That's the one, bestie.
• hash — the returned hash of the LPT pnodes. It's literally the output, no cap.

🌸 DESCRIPTION 🌸

This function iterates over the LPT pnodes and creates a hash over them. That's the whole plot. It returns 0 for success or a negative error code otherwise — periodt.

👑 SEE ALSO 👑

bestie, if you wanna go deeper, the Kernel file is ./fs/ubifs/lpt.c, and the whole squad is:

• do_calc_lpt_geom(9)
• ubifs_calc_lpt_geom(9)
• calc_dflt_lpt_geom(9)
• pack_bits(9)
• ubifs_unpack_bits(9)
• ubifs_pack_pnode(9)
• ubifs_pack_nnode(9)
• ubifs_pack_ltab(9)
• ubifs_pack_lsave(9)
• ubifs_add_lpt_dirt(9)
• set_ltab(9)
• ubifs_add_nnode_dirt(9)
• add_pnode_dirt(9)
• calc_nnode_num(9)
• calc_nnode_num_from_parent(9)
• calc_pnode_num_from_parent(9)
• ubifs_create_dflt_lpt(9)
• update_cats(9)
• replace_cats(9)
• check_lpt_crc(9)
• check_lpt_type(9)
• unpack_pnode(9)
• ubifs_unpack_nnode(9)
• unpack_ltab(9)
• unpack_lsave(9)
• validate_nnode(9)
• validate_pnode(9)
• set_pnode_lnum(9)
• ubifs_read_nnode(9)
• read_pnode(9)
• read_ltab(9)
• read_lsave(9)
• ubifs_get_nnode(9)
• ubifs_get_pnode(9)
• ubifs_pnode_lookup(9)
• ubifs_lpt_lookup(9)
• dirty_cow_nnode(9)
• dirty_cow_pnode(9)
• ubifs_lpt_lookup_dirty(9)
• lpt_check_hash(9)
• lpt_init_rd(9)
• lpt_init_wr(9)
• ubifs_lpt_init(9)
• struct lpt_scan_node(9)
• scan_get_nnode(9)
• scan_get_pnode(9)
• ubifs_lpt_scan_nolock(9)
• dbg_chk_pnode(9)
• dbg_check_lpt_nodes(9)

💌 from ./fs/ubifs, dated October 2026 — mwah, bye bestie 🫶✨