validate_data_node(9)

💫 validate_data_node(9) 💫

okay bestie, welcome to the Kernel API Manual — yes we're in the kernel docs now, put your hair up, it's about to be that kind of function 🎀

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✨ NAME ✨

validate_data_node — the vibe-checker for data nodes, specifically for bulk-read. she looks at your data node and is like "girl is this valid or not" 💅

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🌸 SYNOPSIS 🌸

int validate_data_node (struct ubifs_info *c , void *buf , struct
ubifs_zbranch *zbr );

like literally that's the whole signature, no cap 🫶

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🦋 ARGUMENTS 🦋

• c — the UBIFS file-system description object, your main character struct, the context bestie 🧚
• buf — the buffer that's holding the data node we're about to validate, like the little container she lives in 💖
• zbr — the zbranch of the data node we're validating, iykyk 🌈

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⭐ DESCRIPTION ⭐

so here's the tea: this function returns 0 on success, or a negative error code on failure. that's it. that's the whole description. short and iconic, periodt 👑

ngl this one keeps it mysterious — the manpage doesn't tell us how it validates, just that it does, and that you get 0 or a negative error code. respect the mystery 💀

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🔥 SEE ALSO 🔥

Kernel file ./fs/ubifs/tnc.c — and okay, this list is long, like a group chat with everyone in it, but every single one of them is invited bestie, no one gets left out 🫶

• 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)
• 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)

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and that's the whole page bestie, hope it slayed for you 💜

kisses from ./fs/ubifs, dated ever so iconically October 2026 — see you in the next manpage, mwah 🌸✨🎀