STRUCT UBIFS_NNODE(9)

💜 struct ubifs_nnode(9) 💜

okay so bestie, welcome to the Kernel API Manual — we're doing a deep dive on one struct today and honestly? it's giving main character energy in the LEB Properties Tree ✨

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🎀 NAME 🎀

struct ubifs_nnode — the LEB Properties Tree internal node. yep, the middle-of-the-tree icon, not a leaf, not the root, the in-between queen 👑

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🌸 SYNOPSIS 🌸

struct ubifs_nnode {
    struct ubifs_nnode *parent;
    struct ubifs_cnode *cnext;
    unsigned long flags;
    int iip;
    int level;
    int num;
    struct ubifs_nbranch nbranch[UBIFS_LPT_FANOUT];
 };

literally the whole shape of her 🫶

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🦋 Members 🦋

• parent — the parent nnode 💖 you know, the one who made her
• cnext — next cnode to commit 📝
• flags — flags, and the valid ones are DIRTY_LPT_NODE or OBSOLETE_LPT_NODE 🚩
• iip — her index in the parent (where she sits in the lineup, iykyk)
• level — level in the tree, and no cap: for nnodes this is always greater than zero ⭐
• num — node number 🔢
• nbranch — branches to the child nodes 🌈

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🔥 SEE ALSO 🔥

okay this list is LONG but we do not skip, we do not summarise, we are thorough besties 💅

Kernel file ./fs/ubifs/ubifs.h:

• struct ubifs_old_idx(9)
• struct ubifs_scan_node(9)
• struct ubifs_scan_leb(9)
• struct ubifs_gced_idx_leb(9)
• struct ubifs_inode(9)
• struct ubifs_unclean_leb(9)
• struct ubifs_lprops(9)
• struct ubifs_lpt_lprops(9)
• struct ubifs_lp_stats(9)
• struct ubifs_cnode(9)
• struct ubifs_pnode(9)
• struct ubifs_nbranch(9)
• struct ubifs_lpt_heap(9)
• struct ubifs_wbuf(9)
• struct ubifs_bud(9)
• struct ubifs_jhead(9)
• struct ubifs_zbranch(9)
• struct ubifs_znode(9)
• struct bu_info(9)
• struct ubifs_node_range(9)
• struct ubifs_compressor(9)
• struct ubifs_budget_req(9)
• struct ubifs_orphan(9)
• struct ubifs_mount_opts(9)
• struct ubifs_budg_info(9)
• struct ubifs_stats_info(9)
• struct ubifs_info(9)
• ubifs_check_hash(9)
• ubifs_check_hmac(9)
• ubifs_branch_hash(9)
• ubifs_copy_hash(9)
• ubifs_auth_node_sz(9)

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nnode said "read the whole SEE ALSO list" and honestly? she's right, no skipping the reading, bestie 😭📚

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and that's the page!! 💀✨ brought to you by ./fs/ubifs, version dated October 2026, filed under struct ubifs_nnode(9) — slay, go read the kernel source, ily 🧚💜