is_hash_key(9)

💅 NAME 💅

is_hash_key — the vibe check that tells you if a key is vulnerable to hash collisions ✨

oh and hi, welcome to the Kernel API Manual, bestie, glad you're here 🫶

✨ SYNOPSIS ✨

int is_hash_key (const struct ubifs_info *c , const union ubifs_key *key
);

🌸 ARGUMENTS 🌸

• c — the UBIFS file-system description object. like, the whole filesystem's little passport, iconic behavior only 👑
• key — the key. that's the whole thing. ten out of ten naming, no notes 💀

💖 DESCRIPTION 💖

okay so literally here's the entire plot: this function returns 1 if key is a hashed key, or 0 otherwise.

that's it. that's the function. ate and left no crumbs 🍓

🦋 SEE ALSO 🦋

the kernel file ./fs/ubifs/key.h and, like, the entire friend group — they all show up together or not at all 💜

• key_mask_hash(9), key_r5_hash(9), key_test_hash(9), ino_key_init(9), ino_key_init_flash(9), lowest_ino_key(9), highest_ino_key(9)
• dent_key_init(9), dent_key_init_hash(9), dent_key_init_flash(9), lowest_dent_key(9), xent_key_init(9), xent_key_init_flash(9), lowest_xent_key(9)
• data_key_init(9), highest_data_key(9), trun_key_init(9), invalid_key_init(9)
• key_type(9), key_type_flash(9), key_inum(9), key_inum_flash(9), key_hash(9), key_hash_flash(9), key_block(9), key_block_flash(9)
• key_read(9), key_write(9), key_write_idx(9), key_copy(9), keys_cmp(9), keys_eq(9), key_max_inode_size(9)

real talk: this whole page lives in ./fs/ubifs and it's stamped October 2026 — screenshot it for the group chat, it's giving time capsule 🎀✨ iykyk 💅