left_znode(9)

💅 left_znode(9) — like, the Kernel API Manual page you didn't know you needed 🎀

okay so bestie, welcome to left_znode, straight out of the Kernel API Manual (yeah, the 9 section, we're in the big leagues now ✨). sit down, hydrate, and let's get you a znode to the left. 🦋

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🌸 NAME 🌸

left_znode — get the znode to the left.

that's it. that's the whole vibe. it gets you the znode to the left. iconic, honestly. 👑

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✨ SYNOPSIS ✨

struct ubifs_znode * left_znode (struct ubifs_info *c , struct ubifs_znode *znode );

look at that signature. so clean. so cutesy. two args, one pointer back. the way that it literally just takes your stuff and hands you a struct ubifs_znode *… we love a function that knows what it wants. 💖

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object. your whole filesystem's little passport, fr fr. keep it close, bestie. 🫶
• znode — a znode. yes. that's genuinely the description it gives. no notes. the manpage said "znode" and honestly? king behavior. 😭

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🧚 DESCRIPTION 🧚

okay so here's the tea ☕ — left_znode returns a pointer to the znode to the left of znode, or NULL if there is not one. no left neighbor? you get NULL. that's the whole bit. 💀

and if something goes wrong? a negative error code is returned on failure. so like, watch out for that — NULL means "no znode there", a negative error code means "something broke". highkey important distinction, handle both, don't just assume, iykyk. 🌈

bestie pls check the return before you go dereferencing it. i'm begging. 🙈

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💜 SEE ALSO 💜

no cap, this list is long and it ate. 🔥 every single one, here we go — the Kernel file ./fs/ubifs/tnc.c, and then, like, the entire extended friend group:

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), ubifs_tnc_get_bu_keys(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), 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)

see? i told you it was a whole group chat. every single one, present and accounted for 🫡✨ and yeah, right_znode(9) is in there too — left and right are literally both in the list, balanced, as all things should be 🧚‍♀️

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💖 that's the page, babe 💖 sourced from ./fs/ubifs, dated October 2026, and the header says left_znode(9) — go forth and find your leftward znode, bestie, u got this 🎀🦋👑