key_in_range(9)

💅 key_in_range(9) 💅

okay bestie, this little icon is from the Kernel API Manual, and it’s literally here to tell you if a key is living inside a key range or not. ✨

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🎀 NAME 🎀

key_in_range — determine if a key falls within a range of keys.

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✨ SYNOPSIS ✨

int key_in_range (struct ubifs_info *c , union ubifs_key *key , union
ubifs_key *from_key , union ubifs_key *to_key );

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🫶 ARGUMENTS 🫶

• c — the UBIFS file-system description object, aka the context bestie.
• key — the key you’re checking, no cap.
• from_key — lowest key in range.
• to_key — highest key in range.

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🔥 DESCRIPTION 🔥

This function returns 1 if the key is in range and 0 otherwise. That’s the whole thing: a clean little yes-or-no vibe check for your key. 💅

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🌈 SEE ALSO 🌈

Kernel file ./fs/ubifs/tnc.c, plus the whole 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)
• 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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cute sign-off bestie: this page comes from source ./fs/ubifs, it’s dated October 2026, and yes, it’s the key_in_range(9) manual page. mwah 💋✨