nnode_lookup(9)

💖 nnode_lookup(9) — Kernel API Manual 💖

okay bestie, we're in the Kernel API Manual looking at nnode_lookup(9) and it's giving short-and-sweet lookup energy ✨ no cap.

🌸 NAME 🌸

nnode_lookup — lookup a nnode in the LPT. that's the name, and yes it's literally that iconic 🫶

🦋 SYNOPSIS 🦋

struct ubifs_nnode * nnode_lookup (struct ubifs_info *c , int i );

🎀 ARGUMENTS 🎀

• c — UBIFS file-system description object. the context bestie, slay 💅
• i — nnode number. literally the number of the nnode, periodt ✨

✨ DESCRIPTION ✨

so the way this works: this function returns a pointer to the nnode on success, or a negative error code on failure. that's the whole contract, bestie — pointer when it works, negative error code when it doesn't 😭💖

💜 SEE ALSO 💜

the SEE ALSO starts with the Kernel file ./fs/ubifs/lpt_commit.c, and then it's the whole reference squad — every single one, no skips:

• first_dirty_cnode(9)
• next_dirty_cnode(9)
• get_cnodes_to_commit(9)
• upd_ltab(9)
• alloc_lpt_leb(9)
• layout_cnodes(9)
• realloc_lpt_leb(9)
• write_cnodes(9)
• next_pnode_to_dirty(9)
• add_pnode_dirt(9)
• do_make_pnode_dirty(9)
• make_tree_dirty(9)
• need_write_all(9)
• lpt_tgc_start(9)
• lpt_tgc_end(9)
• populate_lsave(9)
• make_nnode_dirty(9)
• make_pnode_dirty(9)
• make_ltab_dirty(9)
• make_lsave_dirty(9)
• make_node_dirty(9)
• get_lpt_node_len(9)
• get_pad_len(9)
• get_lpt_node_type(9)
• is_a_node(9)
• lpt_gc_lnum(9)
• lpt_gc(9)
• ubifs_lpt_start_commit(9)
• free_obsolete_cnodes(9)
• ubifs_lpt_end_commit(9)
• ubifs_lpt_post_commit(9)
• first_nnode(9)
• next_nnode(9)
• ubifs_lpt_free(9)
• dbg_is_all_ff(9)
• dbg_is_nnode_dirty(9)
• dbg_is_pnode_dirty(9)
• dbg_is_ltab_dirty(9)
• dbg_is_lsave_dirty(9)
• dbg_is_node_dirty(9)
• dbg_check_ltab_lnum(9)
• dbg_check_ltab(9)
• dbg_chk_lpt_free_spc(9)
• dbg_chk_lpt_sz(9)
• dump_lpt_leb(9)
• ubifs_dump_lpt_lebs(9)
• dbg_populate_lsave(9)

and that's the page, bestie — big sign-off kiss from the source/version spot ./fs/ubifs, dated October 2026 💋🎀✨🫶