calc_nnode_num_from_parent(9)

💅 calc_nnode_num_from_parent — Kernel API Manual, bestie ✨

🌸 NAME 🌸

calc_nnode_num_from_parent — calculate nnode number. That’s the whole name, no cap. 🫶

✨ SYNOPSIS ✨

int calc_nnode_num_from_parent (const struct ubifs_info *c , struct
ubifs_nnode *parent , int iip );

🎀 ARGUMENTS 🎀

okay bestie, here’s who’s showing up to the function:

• c — the UBIFS file-system description object. It’s the context object for the file system, periodt.
• parent — the parent nnode. Literally the parent nnode.
• iip — the index in parent. The index inside the parent, iykyk.

💖 DESCRIPTION 💖

okay so the nnode number is a number that uniquely identifies a nnode, and it can be used easily to traverse the tree from the root to that nnode. That’s its whole main character energy. ✨

This function calculates and returns the nnode number based on the parent’s nnode number and the index in parent. No cap, that’s the calculation. 💅

👀 SEE ALSO 👀

The kernel file ./fs/ubifs/lpt.c is where do_calc_lpt_geom(9) lives, and here’s the full related-pages squad — every single one, because we don’t skip:

• 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_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)
• ubifs_lpt_calc_hash(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)

okay that’s the page, bestie 🫶 source/version is ./fs/ubifs, date is October 2026, and it’s for calc_nnode_num_from_parent(9). bye 💅