ubifs_tnc_get_bu_keys(9)

💖 NAME 💖

hey bestie, welcome to ubifs_tnc_get_bu_keys(9) from the Kernel API Manual ✨ this one is literally about lookup keys for bulk-read, and it’s giving very specific UBIFS energy 🦋

• ubifs_tnc_get_bu_keys — lookup keys for bulk-read.

---

✨ SYNOPSIS ✨

int ubifs_tnc_get_bu_keys (struct ubifs_info *c , struct bu_info *bu );

---

🌸 ARGUMENTS 🌸

• c — UBIFS file-system description object 🫶
• bu — bulk-read parameters and results 💅

---

🦋 DESCRIPTION 🦋

okay so picture this: this function looks up consecutive data node keys for the same inode that reside consecutively in the same LEB 👑 lowkey very specific, highkey iconic.

It returns zero in case of success and a negative error code in case of failure. periodt 💖

note bestie: if the bulk-read buffer length (bu->buf_len) is known, this function makes sure bulk-read nodes fit the buffer. Otherwise, this function prepares maximum possible amount of nodes for bulk-read 🌈

---

🎀 SEE ALSO 🎀

Kernel file ./fs/ubifs/tnc.c — the whole reference squad is here, no gatekeeping:

insert_old_idx(9), insert_old_idx_znode(9), ins_clr_old_idx_znode(9),
destroy_old_idx(9), copy_znode(9), add_idx_dirt(9), replace_znode(9),
dirty_cow_znode(9), lnc_add(9), lnc_free(9), tnc_read_hashed_node(9),
try_read_node(9), fallible_read_node(9), matches_name(9), get_znode(9),
tnc_next(9), tnc_prev(9), resolve_collision(9), fallible_matches_name(9),
fallible_resolve_collision(9), matches_position(9),
resolve_collision_directly(9), dirty_cow_bottom_up(9),
ubifs_lookup_level0(9), lookup_level0_dirty(9), maybe_leb_gced(9),
ubifs_tnc_locate(9), read_wbuf(9), validate_data_node(9),
ubifs_tnc_bulk_read(9), do_lookup_nm(9), ubifs_tnc_lookup_nm(9),
ubifs_tnc_lookup_dh(9), correct_parent_keys(9), insert_zbranch(9),
tnc_insert(9), ubifs_tnc_add(9), ubifs_tnc_replace(9),
ubifs_tnc_add_nm(9), tnc_delete(9), ubifs_tnc_remove(9),
ubifs_tnc_remove_nm(9), ubifs_tnc_remove_dh(9), key_in_range(9),
ubifs_tnc_remove_range(9), ubifs_tnc_remove_ino(9),
ubifs_tnc_next_ent(9), tnc_destroy_cnext(9), ubifs_tnc_close(9),
left_znode(9), right_znode(9), lookup_znode(9), is_idx_node_in_tnc(9),
is_leaf_node_in_tnc(9), ubifs_tnc_has_node(9), ubifs_dirty_idx_node(9),
dbg_check_inode_size(9)

mwah 💋 cute sign-off from ./fs/ubifs, dated October 2026, all about ubifs_tnc_get_bu_keys(9) — byeee bestie 🫶✨💅